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Diffstat (limited to 'src/syntax.c')
| -rw-r--r-- | src/syntax.c | 8456 |
1 files changed, 8456 insertions, 0 deletions
diff --git a/src/syntax.c b/src/syntax.c new file mode 100644 index 000000000..31ff7617b --- /dev/null +++ b/src/syntax.c @@ -0,0 +1,8456 @@ +/* vi:set ts=8 sts=4 sw=4: + * + * VIM - Vi IMproved by Bram Moolenaar + * + * Do ":help uganda" in Vim to read copying and usage conditions. + * Do ":help credits" in Vim to see a list of people who contributed. + * See README.txt for an overview of the Vim source code. + */ + +/* + * syntax.c: code for syntax highlighting + */ + +#include "vim.h" + +/* + * Structure that stores information about a highlight group. + * The ID of a highlight group is also called group ID. It is the index in + * the highlight_ga array PLUS ONE. + */ +struct hl_group +{ + char_u *sg_name; /* highlight group name */ + char_u *sg_name_u; /* uppercase of sg_name */ +/* for normal terminals */ + int sg_term; /* "term=" highlighting attributes */ + char_u *sg_start; /* terminal string for start highl */ + char_u *sg_stop; /* terminal string for stop highl */ + int sg_term_attr; /* Screen attr for term mode */ +/* for color terminals */ + int sg_cterm; /* "cterm=" highlighting attr */ + int sg_cterm_bold; /* bold attr was set for light color */ + int sg_cterm_fg; /* terminal fg color number + 1 */ + int sg_cterm_bg; /* terminal bg color number + 1 */ + int sg_cterm_attr; /* Screen attr for color term mode */ +#ifdef FEAT_GUI +/* for when using the GUI */ + int sg_gui; /* "gui=" highlighting attributes */ + guicolor_T sg_gui_fg; /* GUI foreground color handle */ + char_u *sg_gui_fg_name;/* GUI foreground color name */ + guicolor_T sg_gui_bg; /* GUI background color handle */ + char_u *sg_gui_bg_name;/* GUI background color name */ + GuiFont sg_font; /* GUI font handle */ +#ifdef FEAT_XFONTSET + GuiFontset sg_fontset; /* GUI fontset handle */ +#endif + char_u *sg_font_name; /* GUI font or fontset name */ + int sg_gui_attr; /* Screen attr for GUI mode */ +#endif + int sg_link; /* link to this highlight group ID */ + int sg_set; /* combination of SG_* flags */ +}; + +#define SG_TERM 1 /* term has been set */ +#define SG_CTERM 2 /* cterm has been set */ +#define SG_GUI 4 /* gui has been set */ +#define SG_LINK 8 /* link has been set */ + +static garray_T highlight_ga; /* highlight groups for 'highlight' option */ + +#define HL_TABLE() ((struct hl_group *)((highlight_ga.ga_data))) + +#ifdef FEAT_CMDL_COMPL +static int include_default = FALSE; /* include "default" for expansion */ +static int include_link = FALSE; /* include "link" for expansion */ +#endif + +/* + * The "term", "cterm" and "gui" arguments can be any combination of the + * following names, separated by commas (but no spaces!). + */ +static char *(hl_name_table[]) = + {"bold", "standout", "underline", "italic", "reverse", "inverse", "NONE"}; +static int hl_attr_table[] = + {HL_BOLD, HL_STANDOUT, HL_UNDERLINE, HL_ITALIC, HL_INVERSE, HL_INVERSE, 0}; + +static int get_attr_entry __ARGS((garray_T *table, attrentry_T *aep)); +static void syn_unadd_group __ARGS((void)); +static void set_hl_attr __ARGS((int idx)); +static void highlight_list_one __ARGS((int id)); +static int highlight_list_arg __ARGS((int id, int didh, int type, int iarg, char_u *sarg, char *name)); +static int syn_add_group __ARGS((char_u *name)); +static int syn_list_header __ARGS((int did_header, int outlen, int id)); +static int hl_has_settings __ARGS((int idx, int check_link)); +static void highlight_clear __ARGS((int idx)); + +#ifdef FEAT_GUI +static void gui_do_one_color __ARGS((int idx, int do_menu, int do_tooltip)); +static int set_group_colors __ARGS((char_u *name, guicolor_T *fgp, guicolor_T *bgp, int do_menu, int use_norm, int do_tooltip)); +static guicolor_T color_name2handle __ARGS((char_u *name)); +static GuiFont font_name2handle __ARGS((char_u *name)); +# ifdef FEAT_XFONTSET +static GuiFontset fontset_name2handle __ARGS((char_u *name, int fixed_width)); +# endif +static void hl_do_font __ARGS((int idx, char_u *arg, int do_normal, int do_menu, int do_tooltip)); +#endif + +/* + * An attribute number is the index in attr_table plus ATTR_OFF. + */ +#define ATTR_OFF (HL_ALL + 1) + +#if defined(FEAT_SYN_HL) || defined(PROTO) + +#define SYN_NAMELEN 50 /* maximum length of a syntax name */ + +/* different types of offsets that are possible */ +#define SPO_MS_OFF 0 /* match start offset */ +#define SPO_ME_OFF 1 /* match end offset */ +#define SPO_HS_OFF 2 /* highl. start offset */ +#define SPO_HE_OFF 3 /* highl. end offset */ +#define SPO_RS_OFF 4 /* region start offset */ +#define SPO_RE_OFF 5 /* region end offset */ +#define SPO_LC_OFF 6 /* leading context offset */ +#define SPO_COUNT 7 + +static char *(spo_name_tab[SPO_COUNT]) = + {"ms=", "me=", "hs=", "he=", "rs=", "re=", "lc="}; + +/* + * The patterns that are being searched for are stored in a syn_pattern. + * A match item consists of one pattern. + * A start/end item consists of n start patterns and m end patterns. + * A start/skip/end item consists of n start patterns, one skip pattern and m + * end patterns. + * For the latter two, the patterns are always consecutive: start-skip-end. + * + * A character offset can be given for the matched text (_m_start and _m_end) + * and for the actually highlighted text (_h_start and _h_end). + */ +typedef struct syn_pattern +{ + char sp_type; /* see SPTYPE_ defines below */ + char sp_syncing; /* this item used for syncing */ + short sp_flags; /* see HL_ defines below */ + struct sp_syn sp_syn; /* struct passed to in_id_list() */ + short sp_syn_match_id; /* highlight group ID of pattern */ + char_u *sp_pattern; /* regexp to match, pattern */ + regprog_T *sp_prog; /* regexp to match, program */ + int sp_ic; /* ignore-case flag for sp_prog */ + short sp_off_flags; /* see below */ + int sp_offsets[SPO_COUNT]; /* offsets */ + short *sp_cont_list; /* cont. group IDs, if non-zero */ + short *sp_next_list; /* next group IDs, if non-zero */ + int sp_sync_idx; /* sync item index (syncing only) */ + int sp_line_id; /* ID of last line where tried */ + int sp_startcol; /* next match in sp_line_id line */ +} synpat_T; + +/* The sp_off_flags are computed like this: + * offset from the start of the matched text: (1 << SPO_XX_OFF) + * offset from the end of the matched text: (1 << (SPO_XX_OFF + SPO_COUNT)) + * When both are present, only one is used. + */ + +#define SPTYPE_MATCH 1 /* match keyword with this group ID */ +#define SPTYPE_START 2 /* match a regexp, start of item */ +#define SPTYPE_END 3 /* match a regexp, end of item */ +#define SPTYPE_SKIP 4 /* match a regexp, skip within item */ + +#define HL_CONTAINED 0x01 /* not used on toplevel */ +#define HL_TRANSP 0x02 /* has no highlighting */ +#define HL_ONELINE 0x04 /* match within one line only */ +#define HL_HAS_EOL 0x08 /* end pattern that matches with $ */ +#define HL_SYNC_HERE 0x10 /* sync point after this item (syncing only) */ +#define HL_SYNC_THERE 0x20 /* sync point at current line (syncing only) */ +#define HL_MATCH 0x40 /* use match ID instead of item ID */ +#define HL_SKIPNL 0x80 /* nextgroup can skip newlines */ +#define HL_SKIPWHITE 0x100 /* nextgroup can skip white space */ +#define HL_SKIPEMPTY 0x200 /* nextgroup can skip empty lines */ +#define HL_KEEPEND 0x400 /* end match always kept */ +#define HL_EXCLUDENL 0x800 /* exclude NL from match */ +#define HL_DISPLAY 0x1000 /* only used for displaying, not syncing */ +#define HL_FOLD 0x2000 /* define fold */ +#define HL_EXTEND 0x4000 /* ignore a keepend */ +/* These don't fit in a short, thus can't be used for syntax items, only for + * si_flags and bs_flags. */ +#define HL_MATCHCONT 0x8000 /* match continued from previous line */ +#define HL_TRANS_CONT 0x10000L /* transparent item without contains arg */ + +#define SYN_ITEMS(buf) ((synpat_T *)((buf)->b_syn_patterns.ga_data)) + +#define NONE_IDX -2 /* value of sp_sync_idx for "NONE" */ + +/* + * Flags for b_syn_sync_flags: + */ +#define SF_CCOMMENT 0x01 /* sync on a C-style comment */ +#define SF_MATCH 0x02 /* sync by matching a pattern */ + +#define SYN_STATE_P(ssp) ((bufstate_T *)((ssp)->ga_data)) + +/* + * Settings for keyword hash table. It uses a simplistic hash function: add + * all characters together, modulo KHASH_SIZE. + */ +#define KHASH_SIZE 512 +#define KHASH_MASK (KHASH_SIZE - 1) +#define MAXKEYWLEN 80 /* maximum length of a keyword */ + +/* + * The attributes of the syntax item that has been recognized. + */ +static int current_attr = 0; /* attr of current syntax word */ +#ifdef FEAT_EVAL +static int current_id = 0; /* ID of current char for syn_get_id() */ +static int current_trans_id = 0; /* idem, transparancy removed */ +#endif + +struct syn_cluster +{ + char_u *scl_name; /* syntax cluster name */ + char_u *scl_name_u; /* uppercase of scl_name */ + short *scl_list; /* IDs in this syntax cluster */ +}; + +/* + * Methods of combining two clusters + */ +#define CLUSTER_REPLACE 1 /* replace first list with second */ +#define CLUSTER_ADD 2 /* add second list to first */ +#define CLUSTER_SUBTRACT 3 /* subtract second list from first */ + +#define SYN_CLSTR(buf) ((struct syn_cluster *)((buf)->b_syn_clusters.ga_data)) + +/* + * Syntax group IDs have different types: + * 0 - 9999 normal syntax groups + * 10000 - 14999 ALLBUT indicator (current_syn_inc_tag added) + * 15000 - 19999 TOP indicator (current_syn_inc_tag added) + * 20000 - 24999 CONTAINED indicator (current_syn_inc_tag added) + * >= 25000 cluster IDs (subtract SYNID_CLUSTER for the cluster ID) + */ +#define SYNID_ALLBUT 10000 /* syntax group ID for contains=ALLBUT */ +#define SYNID_TOP 15000 /* syntax group ID for contains=TOP */ +#define SYNID_CONTAINED 20000 /* syntax group ID for contains=CONTAINED */ +#define SYNID_CLUSTER 25000 /* first syntax group ID for clusters */ + +/* + * Annoying Hack(TM): ":syn include" needs this pointer to pass to + * expand_filename(). Most of the other syntax commands don't need it, so + * instead of passing it to them, we stow it here. + */ +static char_u **syn_cmdlinep; + +/* + * Another Annoying Hack(TM): To prevent rules from other ":syn include"'d + * files from from leaking into ALLBUT lists, we assign a unique ID to the + * rules in each ":syn include"'d file. + */ +static int current_syn_inc_tag = 0; +static int running_syn_inc_tag = 0; + +/* + * To reduce the time spent in keepend(), remember at which level in the state + * stack the first item with "keepend" is present. When "-1", there is no + * "keepend" on the stack. + */ +static int keepend_level = -1; + +/* + * For the current state we need to remember more than just the idx. + * When si_m_endpos.lnum is 0, the items other than si_idx are unknown. + * (The end positions have the column number of the next char) + */ +typedef struct state_item +{ + int si_idx; /* index of syntax pattern */ + int si_id; /* highlight group ID for keywords */ + int si_trans_id; /* idem, transparancy removed */ + int si_m_lnum; /* lnum of the match */ + int si_m_startcol; /* starting column of the match */ + lpos_T si_m_endpos; /* just after end posn of the match */ + lpos_T si_h_startpos; /* start position of the highlighting */ + lpos_T si_h_endpos; /* end position of the highlighting */ + lpos_T si_eoe_pos; /* end position of end pattern */ + int si_end_idx; /* group ID for end pattern or zero */ + int si_ends; /* if match ends before si_m_endpos */ + int si_attr; /* attributes in this state */ + long si_flags; /* HL_HAS_EOL flag in this state, and + * HL_SKIP* for si_next_list */ + short *si_cont_list; /* list of contained groups */ + short *si_next_list; /* nextgroup IDs after this item ends */ + reg_extmatch_T *si_extmatch; /* \z(...\) matches from start + * pattern */ +} stateitem_T; + +#define KEYWORD_IDX -1 /* value of si_idx for keywords */ +#define ID_LIST_ALL (short *)-1 /* valid of si_cont_list for containing all + but contained groups */ + +/* + * The next possible match in the current line for any pattern is remembered, + * to avoid having to try for a match in each column. + * If next_match_idx == -1, not tried (in this line) yet. + * If next_match_col == MAXCOL, no match found in this line. + * (All end positions have the column of the char after the end) + */ +static int next_match_col; /* column for start of next match */ +static lpos_T next_match_m_endpos; /* position for end of next match */ +static lpos_T next_match_h_startpos; /* pos. for highl. start of next match */ +static lpos_T next_match_h_endpos; /* pos. for highl. end of next match */ +static int next_match_idx; /* index of matched item */ +static long next_match_flags; /* flags for next match */ +static lpos_T next_match_eos_pos; /* end of start pattn (start region) */ +static lpos_T next_match_eoe_pos; /* pos. for end of end pattern */ +static int next_match_end_idx; /* ID of group for end pattn or zero */ +static reg_extmatch_T *next_match_extmatch = NULL; + +/* + * A state stack is an array of integers or stateitem_T, stored in a + * garray_T. A state stack is invalid if it's itemsize entry is zero. + */ +#define INVALID_STATE(ssp) ((ssp)->ga_itemsize == 0) +#define VALID_STATE(ssp) ((ssp)->ga_itemsize != 0) + +/* + * The current state (within the line) of the recognition engine. + * When current_state.ga_itemsize is 0 the current state is invalid. + */ +static win_T *syn_win; /* current window for highlighting */ +static buf_T *syn_buf; /* current buffer for highlighting */ +static linenr_T current_lnum = 0; /* lnum of current state */ +static colnr_T current_col = 0; /* column of current state */ +static int current_state_stored = 0; /* TRUE if stored current state + * after setting current_finished */ +static int current_finished = 0; /* current line has been finished */ +static garray_T current_state /* current stack of state_items */ + = {0, 0, 0, 0, NULL}; +static short *current_next_list = NULL; /* when non-zero, nextgroup list */ +static int current_next_flags = 0; /* flags for current_next_list */ +static int current_line_id = 0; /* unique number for current line */ + +#define CUR_STATE(idx) ((stateitem_T *)(current_state.ga_data))[idx] + +static void syn_sync __ARGS((win_T *wp, linenr_T lnum, synstate_T *last_valid)); +static int syn_match_linecont __ARGS((linenr_T lnum)); +static void syn_start_line __ARGS((void)); +static void syn_update_ends __ARGS((int startofline)); +static void syn_stack_alloc __ARGS((void)); +static int syn_stack_cleanup __ARGS((void)); +static void syn_stack_free_entry __ARGS((buf_T *buf, synstate_T *p)); +static synstate_T *syn_stack_find_entry __ARGS((linenr_T lnum)); +static synstate_T *store_current_state __ARGS((synstate_T *sp)); +static void load_current_state __ARGS((synstate_T *from)); +static void invalidate_current_state __ARGS((void)); +static int syn_stack_equal __ARGS((synstate_T *sp)); +static void validate_current_state __ARGS((void)); +static int syn_finish_line __ARGS((int syncing)); +static int syn_current_attr __ARGS((int syncing, int displaying)); +static int did_match_already __ARGS((int idx, garray_T *gap)); +static stateitem_T *push_next_match __ARGS((stateitem_T *cur_si)); +static void check_state_ends __ARGS((void)); +static void update_si_attr __ARGS((int idx)); +static void check_keepend __ARGS((void)); +static void update_si_end __ARGS((stateitem_T *sip, int startcol, int force)); +static short *copy_id_list __ARGS((short *list)); +static int in_id_list __ARGS((stateitem_T *item, short *cont_list, struct sp_syn *ssp, int contained)); +static int push_current_state __ARGS((int idx)); +static void pop_current_state __ARGS((void)); + +static void find_endpos __ARGS((int idx, lpos_T *startpos, lpos_T *m_endpos, lpos_T *hl_endpos, long *flagsp, lpos_T *end_endpos, int *end_idx, reg_extmatch_T *start_ext)); +static void clear_syn_state __ARGS((synstate_T *p)); +static void clear_current_state __ARGS((void)); + +static void limit_pos __ARGS((lpos_T *pos, lpos_T *limit)); +static void limit_pos_zero __ARGS((lpos_T *pos, lpos_T *limit)); +static void syn_add_end_off __ARGS((lpos_T *result, regmmatch_T *regmatch, synpat_T *spp, int idx, int extra)); +static void syn_add_start_off __ARGS((lpos_T *result, regmmatch_T *regmatch, synpat_T *spp, int idx, int extra)); +static char_u *syn_getcurline __ARGS((void)); +static int syn_regexec __ARGS((regmmatch_T *rmp, linenr_T lnum, colnr_T col)); +static int check_keyword_id __ARGS((char_u *line, int startcol, int *endcol, long *flags, short **next_list, stateitem_T *cur_si)); +static void syn_cmd_case __ARGS((exarg_T *eap, int syncing)); +static void syntax_sync_clear __ARGS((void)); +static void syn_remove_pattern __ARGS((buf_T *buf, int idx)); +static void syn_clear_pattern __ARGS((buf_T *buf, int i)); +static void syn_clear_cluster __ARGS((buf_T *buf, int i)); +static void syn_cmd_clear __ARGS((exarg_T *eap, int syncing)); +static void syn_clear_one __ARGS((int id, int syncing)); +static void syn_cmd_on __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_enable __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_reset __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_manual __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_off __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_onoff __ARGS((exarg_T *eap, char *name)); +static void syn_cmd_list __ARGS((exarg_T *eap, int syncing)); +static void syn_lines_msg __ARGS((void)); +static void syn_match_msg __ARGS((void)); +static void syn_list_one __ARGS((int id, int syncing, int link_only)); +static void syn_list_cluster __ARGS((int id)); +static void put_id_list __ARGS((char_u *name, short *list, int attr)); +static void put_pattern __ARGS((char *s, int c, synpat_T *spp, int attr)); +static int syn_list_keywords __ARGS((int id, keyentry_T **ktabp, int did_header, int attr)); +static void syn_clear_keyword __ARGS((int id, keyentry_T **ktabp)); +static void free_keywtab __ARGS((keyentry_T **ktabp)); +static void add_keyword __ARGS((char_u *name, int id, int flags, short *cont_in_list, short *next_list)); +static int syn_khash __ARGS((char_u *p)); +static char_u *get_group_name __ARGS((char_u *arg, char_u **name_end)); +static char_u *get_syn_options __ARGS((char_u *arg, int *flagsp, int keyword, int *sync_idx, short **cont_list, short **cont_in_list, short **next_list)); +static void syn_cmd_include __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_keyword __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_match __ARGS((exarg_T *eap, int syncing)); +static void syn_cmd_region __ARGS((exarg_T *eap, int syncing)); +#ifdef __BORLANDC__ +static int _RTLENTRYF syn_compare_stub __ARGS((const void *v1, const void *v2)); +#else +static int syn_compare_stub __ARGS((const void *v1, const void *v2)); +#endif +static void syn_cmd_cluster __ARGS((exarg_T *eap, int syncing)); +static int syn_scl_name2id __ARGS((char_u *name)); +static int syn_scl_namen2id __ARGS((char_u *linep, int len)); +static int syn_check_cluster __ARGS((char_u *pp, int len)); +static int syn_add_cluster __ARGS((char_u *name)); +static void init_syn_patterns __ARGS((void)); +static char_u *get_syn_pattern __ARGS((char_u *arg, synpat_T *ci)); +static void syn_cmd_sync __ARGS((exarg_T *eap, int syncing)); +static int get_id_list __ARGS((char_u **arg, int keylen, short **list)); +static void syn_combine_list __ARGS((short **clstr1, short **clstr2, int list_op)); +static void syn_incl_toplevel __ARGS((int id, int *flagsp)); + +/* + * Start the syntax recognition for a line. This function is normally called + * from the screen updating, once for each displayed line. + * The buffer is remembered in syn_buf, because get_syntax_attr() doesn't get + * it. Careful: curbuf and curwin are likely to point to another buffer and + * window. + */ + void +syntax_start(wp, lnum) + win_T *wp; + linenr_T lnum; +{ + synstate_T *p; + synstate_T *last_valid = NULL; + synstate_T *last_min_valid = NULL; + synstate_T *sp, *prev; + linenr_T parsed_lnum; + linenr_T first_stored; + int dist; + + reg_syn = TRUE; /* let vim_regexec() know we're using syntax */ + + /* + * After switching buffers, invalidate current_state. + */ + if (syn_buf != wp->w_buffer) + { + invalidate_current_state(); + syn_buf = wp->w_buffer; + } + syn_win = wp; + + /* + * Allocate syntax stack when needed. + */ + syn_stack_alloc(); + if (syn_buf->b_sst_array == NULL) + goto theend; /* out of memory */ + syn_buf->b_sst_lasttick = display_tick; + + /* + * If the state of the end of the previous line is useful, store it. + */ + if (VALID_STATE(¤t_state) + && current_lnum < lnum + && current_lnum < syn_buf->b_ml.ml_line_count) + { + (void)syn_finish_line(FALSE); + if (!current_state_stored) + { + ++current_lnum; + (void)store_current_state(NULL); + } + + /* + * If the current_lnum is now the same as "lnum", keep the current + * state (this happens very often!). Otherwise invalidate + * current_state and figure it out below. + */ + if (current_lnum != lnum) + invalidate_current_state(); + } + else + invalidate_current_state(); + + /* + * Try to synchronize from a saved state in b_sst_array[]. + * Only do this if lnum is not before and not to far beyond a saved state. + */ + if (INVALID_STATE(¤t_state) && syn_buf->b_sst_array != NULL) + { + /* Find last valid saved state before start_lnum. */ + for (p = syn_buf->b_sst_first; p != NULL; p = p->sst_next) + { + if (p->sst_lnum > lnum) + break; + if (p->sst_lnum <= lnum && p->sst_change_lnum == 0) + { + last_valid = p; + if (p->sst_lnum >= lnum - syn_buf->b_syn_sync_minlines) + last_min_valid = p; + } + } + if (last_min_valid != NULL) + load_current_state(last_min_valid); + } + + /* + * If "lnum" is before or far beyond a line with a saved state, need to + * re-synchronize. + */ + if (INVALID_STATE(¤t_state)) + { + syn_sync(wp, lnum, last_valid); + first_stored = current_lnum + syn_buf->b_syn_sync_minlines; + } + else + first_stored = current_lnum; + + /* + * Advance from the sync point or saved state until the current line. + * Save some entries for syncing with later on. + */ + dist = syn_buf->b_ml.ml_line_count / (syn_buf->b_sst_len - Rows) + 1; + prev = syn_stack_find_entry(current_lnum); + while (current_lnum < lnum) + { + syn_start_line(); + (void)syn_finish_line(FALSE); + ++current_lnum; + + /* If we parsed at least "minlines" lines or started at a valid + * state, the current state is considered valid. */ + if (current_lnum >= first_stored) + { + /* Check if the saved state entry is for the current line and is + * equal to the current state. If so, then validate all saved + * states that depended on a change before the parsed line. */ + if (prev == NULL) + sp = syn_buf->b_sst_first; + else + sp = prev->sst_next; + if (sp != NULL + && sp->sst_lnum == current_lnum + && syn_stack_equal(sp)) + { + parsed_lnum = current_lnum; + prev = sp; + while (sp != NULL && sp->sst_change_lnum <= parsed_lnum) + { + if (sp->sst_lnum <= lnum) + /* valid state before desired line, use this one */ + prev = sp; + else if (sp->sst_change_lnum == 0) + /* past saved states depending on change, break here. */ + break; + sp->sst_change_lnum = 0; + sp = sp->sst_next; + } + load_current_state(prev); + } + /* Store the state at this line when it's the first one, the line + * where we start parsing, or some distance from the previously + * saved state. But only when parsed at least 'minlines'. */ + else if (prev == NULL + || current_lnum == lnum + || current_lnum >= prev->sst_lnum + dist) + prev = store_current_state(prev); + } + + /* This can take a long time: break when CTRL-C pressed. The current + * state will be wrong then. */ + line_breakcheck(); + if (got_int) + { + current_lnum = lnum; + break; + } + } + + syn_start_line(); + +theend: + reg_syn = FALSE; +} + +/* + * We cannot simply discard growarrays full of state_items or buf_states; we + * have to manually release their extmatch pointers first. + */ + static void +clear_syn_state(p) + synstate_T *p; +{ + int i; + garray_T *gap; + + if (p->sst_stacksize > SST_FIX_STATES) + { + gap = &(p->sst_union.sst_ga); + for (i = 0; i < gap->ga_len; i++) + unref_extmatch(SYN_STATE_P(gap)[i].bs_extmatch); + ga_clear(gap); + } + else + { + for (i = 0; i < p->sst_stacksize; i++) + unref_extmatch(p->sst_union.sst_stack[i].bs_extmatch); + } +} + +/* + * Cleanup the current_state stack. + */ + static void +clear_current_state() +{ + int i; + stateitem_T *sip; + + sip = (stateitem_T *)(current_state.ga_data); + for (i = 0; i < current_state.ga_len; i++) + unref_extmatch(sip[i].si_extmatch); + ga_clear(¤t_state); +} + +/* + * Try to find a synchronisation point for line "lnum". + * + * This sets current_lnum and the current state. One of three methods is + * used: + * 1. Search backwards for the end of a C-comment. + * 2. Search backwards for given sync patterns. + * 3. Simply start on a given number of lines above "lnum". + */ + static void +syn_sync(wp, start_lnum, last_valid) + win_T *wp; + linenr_T start_lnum; + synstate_T *last_valid; +{ + buf_T *curbuf_save; + win_T *curwin_save; + pos_T cursor_save; + int idx; + linenr_T lnum; + linenr_T end_lnum; + linenr_T break_lnum; + int had_sync_point; + stateitem_T *cur_si; + synpat_T *spp; + char_u *line; + int found_flags = 0; + int found_match_idx = 0; + linenr_T found_current_lnum = 0; + int found_current_col= 0; + lpos_T found_m_endpos; + + /* + * Clear any current state that might be hanging around. + */ + invalidate_current_state(); + + /* + * Start at least "minlines" back. Default starting point for parsing is + * there. + * Start further back, to avoid that scrolling backwards will result in + * resyncing for every line. Now it resyncs only one out of N lines, + * where N is minlines * 1.5, or minlines * 2 if minlines is small. + * Watch out for overflow when minlines is MAXLNUM. + */ + if (syn_buf->b_syn_sync_minlines > start_lnum) + start_lnum = 1; + else + { + if (syn_buf->b_syn_sync_minlines == 1) + lnum = 1; + else if (syn_buf->b_syn_sync_minlines < 10) + lnum = syn_buf->b_syn_sync_minlines * 2; + else + lnum = syn_buf->b_syn_sync_minlines * 3 / 2; + if (syn_buf->b_syn_sync_maxlines != 0 + && lnum > syn_buf->b_syn_sync_maxlines) + lnum = syn_buf->b_syn_sync_maxlines; + if (lnum >= start_lnum) + start_lnum = 1; + else + start_lnum -= lnum; + } + current_lnum = start_lnum; + + /* + * 1. Search backwards for the end of a C-style comment. + */ + if (syn_buf->b_syn_sync_flags & SF_CCOMMENT) + { + /* Need to make syn_buf the current buffer for a moment, to be able to + * use find_start_comment(). */ + curwin_save = curwin; + curwin = wp; + curbuf_save = curbuf; + curbuf = syn_buf; + + /* + * Skip lines that end in a backslash. + */ + for ( ; start_lnum > 1; --start_lnum) + { + line = ml_get(start_lnum - 1); + if (*line == NUL || *(line + STRLEN(line) - 1) != '\\') + break; + } + current_lnum = start_lnum; + + /* set cursor to start of search */ + cursor_save = wp->w_cursor; + wp->w_cursor.lnum = start_lnum; + wp->w_cursor.col = 0; + + /* + * If the line is inside a comment, need to find the syntax item that + * defines the comment. + * Restrict the search for the end of a comment to b_syn_sync_maxlines. + */ + if (find_start_comment((int)syn_buf->b_syn_sync_maxlines) != NULL) + { + for (idx = syn_buf->b_syn_patterns.ga_len; --idx >= 0; ) + if (SYN_ITEMS(syn_buf)[idx].sp_syn.id == syn_buf->b_syn_sync_id + && SYN_ITEMS(syn_buf)[idx].sp_type == SPTYPE_START) + { + validate_current_state(); + if (push_current_state(idx) == OK) + update_si_attr(current_state.ga_len - 1); + break; + } + } + + /* restore cursor and buffer */ + wp->w_cursor = cursor_save; + curwin = curwin_save; + curbuf = curbuf_save; + } + + /* + * 2. Search backwards for given sync patterns. + */ + else if (syn_buf->b_syn_sync_flags & SF_MATCH) + { + if (syn_buf->b_syn_sync_maxlines != 0 + && start_lnum > syn_buf->b_syn_sync_maxlines) + break_lnum = start_lnum - syn_buf->b_syn_sync_maxlines; + else + break_lnum = 0; + + end_lnum = start_lnum; + lnum = start_lnum; + while (--lnum > break_lnum) + { + /* This can take a long time: break when CTRL-C pressed. */ + line_breakcheck(); + if (got_int) + { + invalidate_current_state(); + current_lnum = start_lnum; + break; + } + + /* Check if we have run into a valid saved state stack now. */ + if (last_valid != NULL && lnum == last_valid->sst_lnum) + { + load_current_state(last_valid); + break; + } + + /* + * Check if the previous line has the line-continuation pattern. + */ + if (lnum > 1 && syn_match_linecont(lnum - 1)) + continue; + + /* + * Start with nothing on the state stack + */ + validate_current_state(); + + for (current_lnum = lnum; current_lnum < end_lnum; ++current_lnum) + { + syn_start_line(); + for (;;) + { + had_sync_point = syn_finish_line(TRUE); + /* + * When a sync point has been found, remember where, and + * continue to look for another one, further on in the line. + */ + if (had_sync_point && current_state.ga_len) + { + cur_si = &CUR_STATE(current_state.ga_len - 1); + if (cur_si->si_m_endpos.lnum > start_lnum) + { + /* ignore match that goes to after where started */ + current_lnum = end_lnum; + break; + } + spp = &(SYN_ITEMS(syn_buf)[cur_si->si_idx]); + found_flags = spp->sp_flags; + found_match_idx = spp->sp_sync_idx; + found_current_lnum = current_lnum; + found_current_col = current_col; + found_m_endpos = cur_si->si_m_endpos; + /* + * Continue after the match (be aware of a zero-length + * match). + */ + if (found_m_endpos.lnum > current_lnum) + { + current_lnum = found_m_endpos.lnum; + current_col = found_m_endpos.col; + if (current_lnum >= end_lnum) + break; + } + else if (found_m_endpos.col > current_col) + current_col = found_m_endpos.col; + else + ++current_col; + + /* syn_current_attr() will have skipped the check for + * an item that ends here, need to do that now. */ + ++current_col; + check_state_ends(); + --current_col; + } + else + break; + } + } + + /* + * If a sync point was encountered, break here. + */ + if (found_flags) + { + /* + * Put the item that was specified by the sync point on the + * state stack. If there was no item specified, make the + * state stack empty. + */ + clear_current_state(); + if (found_match_idx >= 0 + && push_current_state(found_match_idx) == OK) + update_si_attr(current_state.ga_len - 1); + + /* + * When using "grouphere", continue from the sync point + * match, until the end of the line. Parsing starts at + * the next line. + * For "groupthere" the parsing starts at start_lnum. + */ + if (found_flags & HL_SYNC_HERE) + { + if (current_state.ga_len) + { + cur_si = &CUR_STATE(current_state.ga_len - 1); + cur_si->si_h_startpos.lnum = found_current_lnum; + cur_si->si_h_startpos.col = found_current_col; + update_si_end(cur_si, (int)current_col, TRUE); + check_keepend(); + } + current_col = found_m_endpos.col; + current_lnum = found_m_endpos.lnum; + (void)syn_finish_line(FALSE); + ++current_lnum; + } + else + current_lnum = start_lnum; + + break; + } + + end_lnum = lnum; + invalidate_current_state(); + } + + /* Ran into start of the file or exceeded maximum number of lines */ + if (lnum <= break_lnum) + { + invalidate_current_state(); + current_lnum = break_lnum + 1; + } + } + + validate_current_state(); +} + +/* + * Return TRUE if the line-continuation pattern matches in line "lnum". + */ + static int +syn_match_linecont(lnum) + linenr_T lnum; +{ + regmmatch_T regmatch; + + if (syn_buf->b_syn_linecont_prog != NULL) + { + regmatch.rmm_ic = syn_buf->b_syn_linecont_ic; + regmatch.regprog = syn_buf->b_syn_linecont_prog; + return syn_regexec(®match, lnum, (colnr_T)0); + } + return FALSE; +} + +/* + * Prepare the current state for the start of a line. + */ + static void +syn_start_line() +{ + current_finished = FALSE; + current_col = 0; + + /* + * Need to update the end of a start/skip/end that continues from the + * previous line and regions that have "keepend". + */ + if (current_state.ga_len > 0) + syn_update_ends(TRUE); + + next_match_idx = -1; + ++current_line_id; +} + +/* + * Check for items in the stack that need their end updated. + * When "startofline" is TRUE the last item is always updated. + * When "startofline" is FALSE the item with "keepend" is forcefully updated. + */ + static void +syn_update_ends(startofline) + int startofline; +{ + stateitem_T *cur_si; + int i; + + if (startofline) + { + /* Check for a match carried over from a previous line with a + * contained region. The match ends as soon as the region ends. */ + for (i = 0; i < current_state.ga_len; ++i) + { + cur_si = &CUR_STATE(i); + if (cur_si->si_idx >= 0 + && (SYN_ITEMS(syn_buf)[cur_si->si_idx]).sp_type + == SPTYPE_MATCH + && cur_si->si_m_endpos.lnum < current_lnum) + { + cur_si->si_flags |= HL_MATCHCONT; + cur_si->si_m_endpos.lnum = 0; + cur_si->si_m_endpos.col = 0; + cur_si->si_h_endpos = cur_si->si_m_endpos; + cur_si->si_ends = TRUE; + } + } + } + + /* + * Need to update the end of a start/skip/end that continues from the + * previous line. And regions that have "keepend", because they may + * influence contained items. + * Then check for items ending in column 0. + */ + i = current_state.ga_len - 1; + if (keepend_level >= 0) + for ( ; i > keepend_level; --i) + if (CUR_STATE(i).si_flags & HL_EXTEND) + break; + for ( ; i < current_state.ga_len; ++i) + { + cur_si = &CUR_STATE(i); + if ((cur_si->si_flags & HL_KEEPEND) + || (i == current_state.ga_len - 1 && startofline)) + { + cur_si->si_h_startpos.col = 0; /* start highl. in col 0 */ + cur_si->si_h_startpos.lnum = current_lnum; + + if (!(cur_si->si_flags & HL_MATCHCONT)) + update_si_end(cur_si, (int)current_col, !startofline); + } + } + check_keepend(); + check_state_ends(); +} + +/**************************************** + * Handling of the state stack cache. + */ + +/* + * EXPLANATION OF THE SYNTAX STATE STACK CACHE + * + * To speed up syntax highlighting, the state stack for the start of some + * lines is cached. These entries can be used to start parsing at that point. + * + * The stack is kept in b_sst_array[] for each buffer. There is a list of + * valid entries. b_sst_first points to the first one, then follow sst_next. + * The entries are sorted on line number. The first entry is often for line 2 + * (line 1 always starts with an empty stack). + * There is also a list for free entries. This construction is used to avoid + * having to allocate and free memory blocks too often. + * + * When making changes to the buffer, this is logged in b_mod_*. When calling + * update_screen() to update the display, it will call + * syn_stack_apply_changes() for each displayed buffer to adjust the cached + * entries. The entries which are inside the changed area are removed, + * because they must be recomputed. Entries below the changed have their line + * number adjusted for deleted/inserted lines, and have their sst_change_lnum + * set to indicate that a check must be made if the changed lines would change + * the cached entry. + * + * When later displaying lines, an entry is stored for each line. Displayed + * lines are likely to be displayed again, in which case the state at the + * start of the line is needed. + * For not displayed lines, an entry is stored for every so many lines. These + * entries will be used e.g., when scrolling backwards. The distance between + * entries depends on the number of lines in the buffer. For small buffers + * the distance is fixed at SST_DIST, for large buffers there is a fixed + * number of entries SST_MAX_ENTRIES, and the distance is computed. + */ + +/* + * Free b_sst_array[] for buffer "buf". + * Used when syntax items changed to force resyncing everywhere. + */ + void +syn_stack_free_all(buf) + buf_T *buf; +{ + synstate_T *p; + win_T *wp; + + if (buf->b_sst_array != NULL) + { + for (p = buf->b_sst_first; p != NULL; p = p->sst_next) + clear_syn_state(p); + vim_free(buf->b_sst_array); + buf->b_sst_array = NULL; + buf->b_sst_len = 0; + } +#ifdef FEAT_FOLDING + /* When using "syntax" fold method, must update all folds. */ + FOR_ALL_WINDOWS(wp) + { + if (wp->w_buffer == buf && foldmethodIsSyntax(wp)) + foldUpdateAll(wp); + } +#endif +} + +/* + * Allocate the syntax state stack for syn_buf when needed. + * If the number of entries in b_sst_array[] is much too big or a bit too + * small, reallocate it. + * Also used to allocate b_sst_array[] for the first time. + */ + static void +syn_stack_alloc() +{ + long len; + synstate_T *to, *from; + synstate_T *sstp; + + len = syn_buf->b_ml.ml_line_count / SST_DIST + Rows * 2; + if (len < SST_MIN_ENTRIES) + len = SST_MIN_ENTRIES; + else if (len > SST_MAX_ENTRIES) + len = SST_MAX_ENTRIES; + if (syn_buf->b_sst_len > len * 2 || syn_buf->b_sst_len < len) + { + /* Allocate 50% too much, to avoid reallocating too often. */ + len = syn_buf->b_ml.ml_line_count; + len = (len + len / 2) / SST_DIST + Rows * 2; + if (len < SST_MIN_ENTRIES) + len = SST_MIN_ENTRIES; + else if (len > SST_MAX_ENTRIES) + len = SST_MAX_ENTRIES; + + if (syn_buf->b_sst_array != NULL) + { + /* When shrinking the array, cleanup the existing stack. + * Make sure that all valid entries fit in the new array. */ + while (syn_buf->b_sst_len - syn_buf->b_sst_freecount + 2 > len + && syn_stack_cleanup()) + ; + if (len < syn_buf->b_sst_len - syn_buf->b_sst_freecount + 2) + len = syn_buf->b_sst_len - syn_buf->b_sst_freecount + 2; + } + + sstp = (synstate_T *)alloc_clear((unsigned)(len * sizeof(synstate_T))); + if (sstp == NULL) /* out of memory! */ + return; + + to = sstp - 1; + if (syn_buf->b_sst_array != NULL) + { + /* Move the states from the old array to the new one. */ + for (from = syn_buf->b_sst_first; from != NULL; + from = from->sst_next) + { + ++to; + *to = *from; + to->sst_next = to + 1; + } + } + if (to != sstp - 1) + { + to->sst_next = NULL; + syn_buf->b_sst_first = sstp; + syn_buf->b_sst_freecount = len - (int)(to - sstp) - 1; + } + else + { + syn_buf->b_sst_first = NULL; + syn_buf->b_sst_freecount = len; + } + + /* Create the list of free entries. */ + syn_buf->b_sst_firstfree = to + 1; + while (++to < sstp + len) + to->sst_next = to + 1; + (sstp + len - 1)->sst_next = NULL; + + vim_free(syn_buf->b_sst_array); + syn_buf->b_sst_array = sstp; + syn_buf->b_sst_len = len; + } +} + +/* + * Check for changes in a buffer to affect stored syntax states. Uses the + * b_mod_* fields. + * Called from update_screen(), before screen is being updated, once for each + * displayed buffer. + */ + void +syn_stack_apply_changes(buf) + buf_T *buf; +{ + synstate_T *p, *prev, *np; + linenr_T n; + + if (buf->b_sst_array == NULL) /* nothing to do */ + return; + + prev = NULL; + for (p = buf->b_sst_first; p != NULL; ) + { + if (p->sst_lnum + syn_buf->b_syn_sync_linebreaks > buf->b_mod_top) + { + n = p->sst_lnum + buf->b_mod_xlines; + if (n <= buf->b_mod_bot) + { + /* this state is inside the changed area, remove it */ + np = p->sst_next; + if (prev == NULL) + buf->b_sst_first = np; + else + prev->sst_next = np; + syn_stack_free_entry(buf, p); + p = np; + continue; + } + /* This state is below the changed area. Remember the line + * that needs to be parsed before this entry can be made valid + * again. */ + if (p->sst_change_lnum != 0 && p->sst_change_lnum > buf->b_mod_top) + { + if (p->sst_change_lnum + buf->b_mod_xlines > buf->b_mod_top) + p->sst_change_lnum += buf->b_mod_xlines; + else + p->sst_change_lnum = buf->b_mod_top; + } + if (p->sst_change_lnum == 0 + || p->sst_change_lnum < buf->b_mod_bot) + p->sst_change_lnum = buf->b_mod_bot; + + p->sst_lnum = n; + } + prev = p; + p = p->sst_next; + } +} + +/* + * Reduce the number of entries in the state stack for syn_buf. + * Returns TRUE if at least one entry was freed. + */ + static int +syn_stack_cleanup() +{ + synstate_T *p, *prev; + disptick_T tick; + int above; + int dist; + int retval = FALSE; + + if (syn_buf->b_sst_array == NULL || syn_buf->b_sst_first == NULL) + return retval; + + /* Compute normal distance between non-displayed entries. */ + dist = syn_buf->b_ml.ml_line_count / (syn_buf->b_sst_len - Rows) + 1; + + /* + * Go throught the list to find the "tick" for the oldest entry that can + * be removed. Set "above" when the "tick" for the oldest entry is above + * "b_sst_lasttick" (the display tick wraps around). + */ + tick = syn_buf->b_sst_lasttick; + above = FALSE; + prev = syn_buf->b_sst_first; + for (p = prev->sst_next; p != NULL; prev = p, p = p->sst_next) + { + if (prev->sst_lnum + dist > p->sst_lnum) + { + if (p->sst_tick > syn_buf->b_sst_lasttick) + { + if (!above || p->sst_tick < tick) + tick = p->sst_tick; + above = TRUE; + } + else if (!above && p->sst_tick < tick) + tick = p->sst_tick; + } + } + + /* + * Go through the list to make the entries for the oldest tick at an + * interval of several lines. + */ + prev = syn_buf->b_sst_first; + for (p = prev->sst_next; p != NULL; prev = p, p = p->sst_next) + { + if (p->sst_tick == tick && prev->sst_lnum + dist > p->sst_lnum) + { + /* Move this entry from used list to free list */ + prev->sst_next = p->sst_next; + syn_stack_free_entry(syn_buf, p); + p = prev; + retval = TRUE; + } + } + return retval; +} + +/* + * Free the allocated memory for a syn_state item. + * Move the entry into the free list. + */ + static void +syn_stack_free_entry(buf, p) + buf_T *buf; + synstate_T *p; +{ + clear_syn_state(p); + p->sst_next = buf->b_sst_firstfree; + buf->b_sst_firstfree = p; + ++buf->b_sst_freecount; +} + +/* + * Find an entry in the list of state stacks at or before "lnum". + * Returns NULL when there is no entry or the first entry is after "lnum". + */ + static synstate_T * +syn_stack_find_entry(lnum) + linenr_T lnum; +{ + synstate_T *p, *prev; + + prev = NULL; + for (p = syn_buf->b_sst_first; p != NULL; prev = p, p = p->sst_next) + { + if (p->sst_lnum == lnum) + return p; + if (p->sst_lnum > lnum) + break; + } + return prev; +} + +/* + * Try saving the current state in b_sst_array[]. + * The current state must be valid for the start of the current_lnum line! + */ + static synstate_T * +store_current_state(sp) + synstate_T *sp; /* at or before where state is to be saved or + NULL */ +{ + int i; + synstate_T *p; + bufstate_T *bp; + stateitem_T *cur_si; + + if (sp == NULL) + sp = syn_stack_find_entry(current_lnum); + + /* + * If the current state contains a start or end pattern that continues + * from the previous line, we can't use it. Don't store it then. + */ + for (i = current_state.ga_len - 1; i >= 0; --i) + { + cur_si = &CUR_STATE(i); + if (cur_si->si_h_startpos.lnum >= current_lnum + || cur_si->si_m_endpos.lnum >= current_lnum + || cur_si->si_h_endpos.lnum >= current_lnum + || (cur_si->si_end_idx + && cur_si->si_eoe_pos.lnum >= current_lnum)) + break; + } + if (i >= 0) + { + if (sp != NULL) + { + /* find "sp" in the list and remove it */ + if (syn_buf->b_sst_first == sp) + /* it's the first entry */ + syn_buf->b_sst_first = sp->sst_next; + else + { + /* find the entry just before this one to adjust sst_next */ + for (p = syn_buf->b_sst_first; p != NULL; p = p->sst_next) + if (p->sst_next == sp) + break; + p->sst_next = sp->sst_next; + } + syn_stack_free_entry(syn_buf, sp); + sp = NULL; + } + } + else if (sp == NULL || sp->sst_lnum != current_lnum) + { + /* + * Add a new entry + */ + /* If no free items, cleanup the array first. */ + if (syn_buf->b_sst_freecount == 0) + { + (void)syn_stack_cleanup(); + /* "sp" may have been moved to the freelist now */ + sp = syn_stack_find_entry(current_lnum); + } + /* Still no free items? Must be a strange problem... */ + if (syn_buf->b_sst_freecount == 0) + sp = NULL; + else + { + /* Take the first item from the free list and put it in the used + * list, after *sp */ + p = syn_buf->b_sst_firstfree; + syn_buf->b_sst_firstfree = p->sst_next; + --syn_buf->b_sst_freecount; + if (sp == NULL) + { + /* Insert in front of the list */ + p->sst_next = syn_buf->b_sst_first; + syn_buf->b_sst_first = p; + } + else + { + /* insert in list after *sp */ + p->sst_next = sp->sst_next; + sp->sst_next = p; + } + sp = p; + sp->sst_stacksize = 0; + sp->sst_lnum = current_lnum; + } + } + if (sp != NULL) + { + /* When overwriting an existing state stack, clear it first */ + clear_syn_state(sp); + sp->sst_stacksize = current_state.ga_len; + if (current_state.ga_len > SST_FIX_STATES) + { + /* Need to clear it, might be something remaining from when the + * length was less than SST_FIX_STATES. */ + ga_init2(&sp->sst_union.sst_ga, (int)sizeof(bufstate_T), 1); + if (ga_grow(&sp->sst_union.sst_ga, current_state.ga_len) == FAIL) + sp->sst_stacksize = 0; + else + { + sp->sst_union.sst_ga.ga_len = current_state.ga_len; + sp->sst_union.sst_ga.ga_room -= current_state.ga_len; + } + bp = SYN_STATE_P(&(sp->sst_union.sst_ga)); + } + else + bp = sp->sst_union.sst_stack; + for (i = 0; i < sp->sst_stacksize; ++i) + { + bp[i].bs_idx = CUR_STATE(i).si_idx; + bp[i].bs_flags = CUR_STATE(i).si_flags; + bp[i].bs_extmatch = ref_extmatch(CUR_STATE(i).si_extmatch); + } + sp->sst_next_flags = current_next_flags; + sp->sst_next_list = current_next_list; + sp->sst_tick = display_tick; + sp->sst_change_lnum = 0; + } + current_state_stored = TRUE; + return sp; +} + +/* + * Copy a state stack from "from" in b_sst_array[] to current_state; + */ + static void +load_current_state(from) + synstate_T *from; +{ + int i; + bufstate_T *bp; + + clear_current_state(); + validate_current_state(); + keepend_level = -1; + if (from->sst_stacksize + && ga_grow(¤t_state, from->sst_stacksize) != FAIL) + { + if (from->sst_stacksize > SST_FIX_STATES) + bp = SYN_STATE_P(&(from->sst_union.sst_ga)); + else + bp = from->sst_union.sst_stack; + for (i = 0; i < from->sst_stacksize; ++i) + { + CUR_STATE(i).si_idx = bp[i].bs_idx; + CUR_STATE(i).si_flags = bp[i].bs_flags; + CUR_STATE(i).si_extmatch = ref_extmatch(bp[i].bs_extmatch); + if (keepend_level < 0 && (CUR_STATE(i).si_flags & HL_KEEPEND)) + keepend_level = i; + CUR_STATE(i).si_ends = FALSE; + CUR_STATE(i).si_m_lnum = 0; + if (CUR_STATE(i).si_idx >= 0) + CUR_STATE(i).si_next_list = + (SYN_ITEMS(syn_buf)[CUR_STATE(i).si_idx]).sp_next_list; + else + CUR_STATE(i).si_next_list = NULL; + update_si_attr(i); + } + current_state.ga_len = from->sst_stacksize; + current_state.ga_room -= current_state.ga_len; + } + current_next_list = from->sst_next_list; + current_next_flags = from->sst_next_flags; + current_lnum = from->sst_lnum; +} + +/* + * Compare saved state stack "*sp" with the current state. + * Return TRUE when they are equal. + */ + static int +syn_stack_equal(sp) + synstate_T *sp; +{ + int i, j; + bufstate_T *bp; + reg_extmatch_T *six, *bsx; + + /* First a quick check if the stacks have the same size end nextlist. */ + if (sp->sst_stacksize == current_state.ga_len + && sp->sst_next_list == current_next_list) + { + /* Need to compare all states on both stacks. */ + if (sp->sst_stacksize > SST_FIX_STATES) + bp = SYN_STATE_P(&(sp->sst_union.sst_ga)); + else + bp = sp->sst_union.sst_stack; + + for (i = current_state.ga_len; --i >= 0; ) + { + /* If the item has another index the state is different. */ + if (bp[i].bs_idx != CUR_STATE(i).si_idx) + break; + if (bp[i].bs_extmatch != CUR_STATE(i).si_extmatch) + { + /* When the extmatch pointers are different, the strings in + * them can still be the same. Check if the extmatch + * references are equal. */ + bsx = bp[i].bs_extmatch; + six = CUR_STATE(i).si_extmatch; + /* If one of the extmatch pointers is NULL the states are + * different. */ + if (bsx == NULL || six == NULL) + break; + for (j = 0; j < NSUBEXP; ++j) + { + /* Check each referenced match string. They must all be + * equal. */ + if (bsx->matches[j] != six->matches[j]) + { + /* If the pointer is different it can still be the + * same text. Compare the strings, ignore case when + * the start item has the sp_ic flag set. */ + if (bsx->matches[j] == NULL + || six->matches[j] == NULL) + break; + if ((SYN_ITEMS(syn_buf)[CUR_STATE(i).si_idx]).sp_ic + ? MB_STRICMP(bsx->matches[j], + six->matches[j]) != 0 + : STRCMP(bsx->matches[j], six->matches[j]) != 0) + break; + } + } + if (j != NSUBEXP) + break; + } + } + if (i < 0) + return TRUE; + } + return FALSE; +} + +/* + * We stop parsing syntax above line "lnum". If the stored state at or below + * this line depended on a change before it, it now depends on the line below + * the last parsed line. + * The window looks like this: + * line which changed + * displayed line + * displayed line + * lnum -> line below window + */ + void +syntax_end_parsing(lnum) + linenr_T lnum; +{ + synstate_T *sp; + + sp = syn_stack_find_entry(lnum); + if (sp != NULL && sp->sst_lnum < lnum) + sp = sp->sst_next; + + if (sp != NULL && sp->sst_change_lnum != 0) + sp->sst_change_lnum = lnum; +} + +/* + * End of handling of the state stack. + ****************************************/ + + static void +invalidate_current_state() +{ + clear_current_state(); + current_state.ga_itemsize = 0; /* mark current_state invalid */ + current_next_list = NULL; + keepend_level = -1; +} + + static void +validate_current_state() +{ + current_state.ga_itemsize = sizeof(stateitem_T); + current_state.ga_growsize = 3; +} + +/* + * Return TRUE if the syntax at start of lnum changed since last time. + * This will only be called just after get_syntax_attr() for the previous + * line, to check if the next line needs to be redrawn too. + */ + int +syntax_check_changed(lnum) + linenr_T lnum; +{ + int retval = TRUE; + synstate_T *sp; + + reg_syn = TRUE; /* let vim_regexec() know we're using syntax */ + + /* + * Check the state stack when: + * - lnum is just below the previously syntaxed line. + * - lnum is not before the lines with saved states. + * - lnum is not past the lines with saved states. + * - lnum is at or before the last changed line. + */ + if (VALID_STATE(¤t_state) && lnum == current_lnum + 1) + { + sp = syn_stack_find_entry(lnum); + if (sp != NULL && sp->sst_lnum == lnum) + { + /* + * finish the previous line (needed when not all of the line was + * drawn) + */ + (void)syn_finish_line(FALSE); + + /* + * Compare the current state with the previously saved state of + * the line. + */ + if (syn_stack_equal(sp)) + retval = FALSE; + + /* + * Store the current state in b_sst_array[] for later use. + */ + ++current_lnum; + (void)store_current_state(NULL); + } + } + + reg_syn = FALSE; + + return retval; +} + +/* + * Finish the current line. + * This doesn't return any attributes, it only gets the state at the end of + * the line. It can start anywhere in the line, as long as the current state + * is valid. + */ + static int +syn_finish_line(syncing) + int syncing; /* called for syncing */ +{ + stateitem_T *cur_si; + + if (!current_finished) + { + while (!current_finished) + { + (void)syn_current_attr(syncing, FALSE); + /* + * When syncing, and found some item, need to check the item. + */ + if (syncing && current_state.ga_len) + { + /* + * Check for match with sync item. + */ + cur_si = &CUR_STATE(current_state.ga_len - 1); + if (cur_si->si_idx >= 0 + && (SYN_ITEMS(syn_buf)[cur_si->si_idx].sp_flags + & (HL_SYNC_HERE|HL_SYNC_THERE))) + return TRUE; + + /* syn_current_attr() will have skipped the check for an item + * that ends here, need to do that now. */ + ++current_col; + check_state_ends(); + --current_col; + } + ++current_col; + } + } + return FALSE; +} + +/* + * Return highlight attributes for next character. + * Must first call syntax_start() once for the line. + * "col" is normally 0 for the first use in a line, and increments by one each + * time. It's allowed to skip characters and to stop before the end of the + * line. But only a "col" after a previously used column is allowed. + */ + int +get_syntax_attr(col) + colnr_T col; +{ + int attr = 0; + + /* check for out of memory situation */ + if (syn_buf->b_sst_array == NULL) + return 0; + + reg_syn = TRUE; /* let vim_regexec() know we're using syntax */ + + /* Make sure current_state is valid */ + if (INVALID_STATE(¤t_state)) + validate_current_state(); + + /* + * Skip from the current column to "col", get the attributes for "col". + */ + while (current_col <= col) + { + attr = syn_current_attr(FALSE, TRUE); + ++current_col; + } + + reg_syn = FALSE; + return attr; +} + +/* + * Get syntax attributes for current_lnum, current_col. + */ + static int +syn_current_attr(syncing, displaying) + int syncing; /* When 1: called for syncing */ + int displaying; /* result will be displayed */ +{ + int syn_id; + lpos_T endpos; /* was: char_u *endp; */ + lpos_T hl_startpos; /* was: int hl_startcol; */ + lpos_T hl_endpos; + lpos_T eos_pos; /* end-of-start match (start region) */ + lpos_T eoe_pos; /* end-of-end pattern */ + int end_idx; /* group ID for end pattern */ + int idx; + synpat_T *spp; + stateitem_T *cur_si, *sip; + int startcol; + int endcol; + long flags; + short *next_list; + int found_match; /* found usable match */ + static int try_next_column = FALSE; /* must try in next col */ + int do_keywords; + regmmatch_T regmatch; + lpos_T pos; + int lc_col; + reg_extmatch_T *cur_extmatch = NULL; + char_u *line; /* current line. NOTE: becomes invalid after + looking for a pattern match! */ + + /* variables for zero-width matches that have a "nextgroup" argument */ + int keep_next_list; + int zero_width_next_list = FALSE; + garray_T zero_width_next_ga; + + /* + * No character, no attributes! Past end of line? + * Do try matching with an empty line (could be the start of a region). + */ + line = syn_getcurline(); + if (line[current_col] == NUL && current_col != 0) + { + /* + * If we found a match after the last column, use it. + */ + if (next_match_idx >= 0 && next_match_col >= (int)current_col + && next_match_col != MAXCOL) + (void)push_next_match(NULL); + + current_finished = TRUE; + current_state_stored = FALSE; + return 0; + } + + /* if the current or next character is NUL, we will finish the line now */ + if (line[current_col] == NUL || line[current_col + 1] == NUL) + { + current_finished = TRUE; + current_state_stored = FALSE; + } + + /* + * When in the previous column there was a match but it could not be used + * (empty match or already matched in this column) need to try again in + * the next column. + */ + if (try_next_column) + { + next_match_idx = -1; + try_next_column = FALSE; + } + + /* Only check for keywords when not syncing and there are some. */ + do_keywords = !syncing + && (syn_buf->b_keywtab != NULL + || syn_buf->b_keywtab_ic != NULL); + + /* Init the list of zero-width matches with a nextlist. This is used to + * avoid matching the same item in the same position twice. */ + ga_init2(&zero_width_next_ga, (int)sizeof(int), 10); + + /* + * Repeat matching keywords and patterns, to find contained items at the + * same column. This stops when there are no extra matches at the current + * column. + */ + do + { + found_match = FALSE; + keep_next_list = FALSE; + syn_id = 0; + + /* + * 1. Check for a current state. + * Only when there is no current state, or if the current state may + * contain other things, we need to check for keywords and patterns. + * Always need to check for contained items if some item has the + * "containedin" argument (takes extra time!). + */ + if (current_state.ga_len) + cur_si = &CUR_STATE(current_state.ga_len - 1); + else + cur_si = NULL; + + if (syn_buf->b_syn_containedin || cur_si == NULL + || cur_si->si_cont_list != NULL) + { + /* + * 2. Check for keywords, if on a keyword char after a non-keyword + * char. Don't do this when syncing. + */ + if (do_keywords) + { + line = syn_getcurline(); + if (vim_iswordc_buf(line + current_col, syn_buf) + && (current_col == 0 + || !vim_iswordc_buf(line + current_col - 1 +#ifdef FEAT_MBYTE + - (has_mbyte + ? (*mb_head_off)(line, line + current_col - 1) + : 0) +#endif + , syn_buf))) + { + syn_id = check_keyword_id(line, (int)current_col, + &endcol, &flags, &next_list, cur_si); + if (syn_id) + { + if (push_current_state(KEYWORD_IDX) == OK) + { + cur_si = &CUR_STATE(current_state.ga_len - 1); + cur_si->si_m_startcol = current_col; + cur_si->si_h_startpos.lnum = current_lnum; + cur_si->si_h_startpos.col = 0; /* starts right away */ + cur_si->si_m_endpos.lnum = current_lnum; + cur_si->si_m_endpos.col = endcol; + cur_si->si_h_endpos.lnum = current_lnum; + cur_si->si_h_endpos.col = endcol; + cur_si->si_ends = TRUE; + cur_si->si_end_idx = 0; + cur_si->si_flags = flags; + cur_si->si_id = syn_id; + cur_si->si_trans_id = syn_id; + if (flags & HL_TRANSP) + { + if (current_state.ga_len < 2) + { + cur_si->si_attr = 0; + cur_si->si_trans_id = 0; + } + else + { + cur_si->si_attr = CUR_STATE( + current_state.ga_len - 2).si_attr; + cur_si->si_trans_id = CUR_STATE( + current_state.ga_len - 2).si_trans_id; + } + } + else + cur_si->si_attr = syn_id2attr(syn_id); + cur_si->si_cont_list = NULL; + cur_si->si_next_list = next_list; + check_keepend(); + } + else + vim_free(next_list); + } + } + } + + /* + * 3. Check for patterns (only if not found a keyword). + */ + if (syn_id == 0 && syn_buf->b_syn_patterns.ga_len) + { + /* + * If we didn't check for a match yet, or we are past it, check + * for any match with a pattern. + */ + if (next_match_idx < 0 || next_match_col < (int)current_col) + { + /* + * Check all relevant patterns for a match at this + * position. This is complicated, because matching with a + * pattern takes quite a bit of time, thus we want to + * avoid doing it when it's not needed. + */ + next_match_idx = 0; /* no match in this line yet */ + next_match_col = MAXCOL; + for (idx = syn_buf->b_syn_patterns.ga_len; --idx >= 0; ) + { + spp = &(SYN_ITEMS(syn_buf)[idx]); + if ( spp->sp_syncing == syncing + && (displaying || !(spp->sp_flags & HL_DISPLAY)) + && (spp->sp_type == SPTYPE_MATCH + || spp->sp_type == SPTYPE_START) + && (current_next_list != NULL + ? in_id_list(NULL, current_next_list, + &spp->sp_syn, 0) + : (cur_si == NULL + ? !(spp->sp_flags & HL_CONTAINED) + : in_id_list(cur_si, + cur_si->si_cont_list, &spp->sp_syn, + spp->sp_flags & HL_CONTAINED)))) + { + /* If we already tried matching in this line, and + * there isn't a match before next_match_col, skip + * this item. */ + if (spp->sp_line_id == current_line_id + && spp->sp_startcol >= next_match_col) + continue; + spp->sp_line_id = current_line_id; + + lc_col = current_col - spp->sp_offsets[SPO_LC_OFF]; + if (lc_col < 0) + lc_col = 0; + + regmatch.rmm_ic = spp->sp_ic; + regmatch.regprog = spp->sp_prog; + if (!syn_regexec(®match, current_lnum, + (colnr_T)lc_col)) + { + /* no match in this line, try another one */ + spp->sp_startcol = MAXCOL; + continue; + } + + /* + * Compute the first column of the match. + */ + syn_add_start_off(&pos, ®match, + spp, SPO_MS_OFF, -1); + if (pos.lnum > current_lnum) + { + /* must have used end of match in a next line, + * we can't handle that */ + spp->sp_startcol = MAXCOL; + continue; + } + startcol = pos.col; + + /* remember the next column where this pattern + * matches in the current line */ + spp->sp_startcol = startcol; + + /* + * If a previously found match starts at a lower + * column number, don't use this one. + */ + if (startcol >= next_match_col) + continue; + + /* + * If we matched this pattern at this position + * before, skip it. Must retry in the next + * column, because it may match from there. + */ + if (did_match_already(idx, &zero_width_next_ga)) + { + try_next_column = TRUE; + continue; + } + + endpos.lnum = regmatch.endpos[0].lnum; + endpos.col = regmatch.endpos[0].col; + + /* Compute the highlight start. */ + syn_add_start_off(&hl_startpos, ®match, + spp, SPO_HS_OFF, -1); + + /* Compute the region start. */ + /* Default is to use the end of the match. */ + syn_add_end_off(&eos_pos, ®match, + spp, SPO_RS_OFF, 0); + + /* + * Grab the external submatches before they get + * overwritten. Reference count doesn't change. + */ + unref_extmatch(cur_extmatch); + cur_extmatch = re_extmatch_out; + re_extmatch_out = NULL; + + flags = 0; + eoe_pos.lnum = 0; /* avoid warning */ + eoe_pos.col = 0; + end_idx = 0; + hl_endpos.lnum = 0; + + /* + * For a "oneline" the end must be found in the + * same line too. Search for it after the end of + * the match with the start pattern. Set the + * resulting end positions at the same time. + */ + if (spp->sp_type == SPTYPE_START + && (spp->sp_flags & HL_ONELINE)) + { + lpos_T startpos; + + startpos = endpos; + find_endpos(idx, &startpos, &endpos, &hl_endpos, + &flags, &eoe_pos, &end_idx, cur_extmatch); + if (endpos.lnum == 0) + continue; /* not found */ + } + + /* + * For a "match" the size must be > 0 after the + * end offset needs has been added. Except when + * syncing. + */ + else if (spp->sp_type == SPTYPE_MATCH) + { + syn_add_end_off(&hl_endpos, ®match, spp, + SPO_HE_OFF, 0); + syn_add_end_off(&endpos, ®match, spp, + SPO_ME_OFF, 0); + if (endpos.lnum == current_lnum + && (int)endpos.col + syncing < startcol) + { + /* + * If an empty string is matched, may need + * to try matching again at next column. + */ + if (regmatch.startpos[0].col + == regmatch.endpos[0].col) + try_next_column = TRUE; + continue; + } + } + + /* + * keep the best match so far in next_match_* + */ + /* Highlighting must start after startpos and end + * before endpos. */ + if (hl_startpos.lnum == current_lnum + && (int)hl_startpos.col < startcol) + hl_startpos.col = startcol; + limit_pos_zero(&hl_endpos, &endpos); + + next_match_idx = idx; + next_match_col = startcol; + next_match_m_endpos = endpos; + next_match_h_endpos = hl_endpos; + next_match_h_startpos = hl_startpos; + next_match_flags = flags; + next_match_eos_pos = eos_pos; + next_match_eoe_pos = eoe_pos; + next_match_end_idx = end_idx; + unref_extmatch(next_match_extmatch); + next_match_extmatch = cur_extmatch; + cur_extmatch = NULL; + } + } + } + + /* + * If we found a match at the current column, use it. + */ + if (next_match_idx >= 0 && next_match_col == (int)current_col) + { + synpat_T *lspp; + + /* When a zero-width item matched which has a nextgroup, + * don't push the item but set nextgroup. */ + lspp = &(SYN_ITEMS(syn_buf)[next_match_idx]); + if (next_match_m_endpos.lnum == current_lnum + && next_match_m_endpos.col == current_col + && lspp->sp_next_list != NULL) + { + current_next_list = lspp->sp_next_list; + current_next_flags = lspp->sp_flags; + keep_next_list = TRUE; + zero_width_next_list = TRUE; + + /* Add the index to a list, so that we can check + * later that we don't match it again (and cause an + * endless loop). */ + if (ga_grow(&zero_width_next_ga, 1) == OK) + { + ((int *)(zero_width_next_ga.ga_data)) + [zero_width_next_ga.ga_len++] = next_match_idx; + --zero_width_next_ga.ga_room; + } + next_match_idx = -1; + } + else + cur_si = push_next_match(cur_si); + found_match = TRUE; + } + } + } + + /* + * Handle searching for nextgroup match. + */ + if (current_next_list != NULL && !keep_next_list) + { + /* + * If a nextgroup was not found, continue looking for one if: + * - this is an empty line and the "skipempty" option was given + * - we are on white space and the "skipwhite" option was given + */ + if (!found_match) + { + line = syn_getcurline(); + if (((current_next_flags & HL_SKIPWHITE) + && vim_iswhite(line[current_col])) + || ((current_next_flags & HL_SKIPEMPTY) + && *line == NUL)) + break; + } + + /* + * If a nextgroup was found: Use it, and continue looking for + * contained matches. + * If a nextgroup was not found: Continue looking for a normal + * match. + * When did set current_next_list for a zero-width item and no + * match was found don't loop (would get stuck). + */ + current_next_list = NULL; + next_match_idx = -1; + if (!zero_width_next_list) + found_match = TRUE; + } + + } while (found_match); + + /* + * Use attributes from the current state, if within its highlighting. + * If not, use attributes from the current-but-one state, etc. + */ + current_attr = 0; +#ifdef FEAT_EVAL + current_id = 0; + current_trans_id = 0; +#endif + if (cur_si != NULL) + { + for (idx = current_state.ga_len - 1; idx >= 0; --idx) + { + sip = &CUR_STATE(idx); + if ((current_lnum > sip->si_h_startpos.lnum + || (current_lnum == sip->si_h_startpos.lnum + && current_col >= sip->si_h_startpos.col)) + && (sip->si_h_endpos.lnum == 0 + || current_lnum < sip->si_h_endpos.lnum + || (current_lnum == sip->si_h_endpos.lnum + && current_col < sip->si_h_endpos.col))) + { + current_attr = sip->si_attr; +#ifdef FEAT_EVAL + current_id = sip->si_id; + current_trans_id = sip->si_trans_id; +#endif + break; + } + } + + /* + * Check for end of current state (and the states before it) at the + * next column. Don't do this for syncing, because we would miss a + * single character match. + * First check if the current state ends at the current column. It + * may be for an empty match and a containing item might end in the + * current column. + */ + if (!syncing) + { + check_state_ends(); + if (current_state.ga_len > 0) + { + ++current_col; + check_state_ends(); + --current_col; + } + } + } + + /* nextgroup ends at end of line, unless "skipnl" or "skipemtpy" present */ + if (current_next_list != NULL + && syn_getcurline()[current_col + 1] == NUL + && !(current_next_flags & (HL_SKIPNL | HL_SKIPEMPTY))) + current_next_list = NULL; + + if (zero_width_next_ga.ga_len > 0) + ga_clear(&zero_width_next_ga); + + /* No longer need external matches. But keep next_match_extmatch. */ + unref_extmatch(re_extmatch_out); + re_extmatch_out = NULL; + unref_extmatch(cur_extmatch); + + return current_attr; +} + + +/* + * Check if we already matched pattern "idx" at the current column. + */ + static int +did_match_already(idx, gap) + int idx; + garray_T *gap; +{ + int i; + + for (i = current_state.ga_len; --i >= 0; ) + if (CUR_STATE(i).si_m_startcol == (int)current_col + && CUR_STATE(i).si_m_lnum == (int)current_lnum + && CUR_STATE(i).si_idx == idx) + return TRUE; + + /* Zero-width matches with a nextgroup argument are not put on the syntax + * stack, and can only be matched once anyway. */ + for (i = gap->ga_len; --i >= 0; ) + if (((int *)(gap->ga_data))[i] == idx) + return TRUE; + + return FALSE; +} + +/* + * Push the next match onto the stack. + */ + static stateitem_T * +push_next_match(cur_si) + stateitem_T *cur_si; +{ + synpat_T *spp; + + spp = &(SYN_ITEMS(syn_buf)[next_match_idx]); + + /* + * Push the item in current_state stack; + */ + if (push_current_state(next_match_idx) == OK) + { + /* + * If it's a start-skip-end type that crosses lines, figure out how + * much it continues in this line. Otherwise just fill in the length. + */ + cur_si = &CUR_STATE(current_state.ga_len - 1); + cur_si->si_h_startpos = next_match_h_startpos; + cur_si->si_m_startcol = current_col; + cur_si->si_m_lnum = current_lnum; + cur_si->si_flags = spp->sp_flags; + cur_si->si_next_list = spp->sp_next_list; + cur_si->si_extmatch = ref_extmatch(next_match_extmatch); + if (spp->sp_type == SPTYPE_START && !(spp->sp_flags & HL_ONELINE)) + { + /* Try to find the end pattern in the current line */ + update_si_end(cur_si, (int)(next_match_m_endpos.col), TRUE); + check_keepend(); + } + else + { + cur_si->si_m_endpos = next_match_m_endpos; + cur_si->si_h_endpos = next_match_h_endpos; + cur_si->si_ends = TRUE; + cur_si->si_flags |= next_match_flags; + cur_si->si_eoe_pos = next_match_eoe_pos; + cur_si->si_end_idx = next_match_end_idx; + } + if (keepend_level < 0 && (cur_si->si_flags & HL_KEEPEND)) + keepend_level = current_state.ga_len - 1; + check_keepend(); + update_si_attr(current_state.ga_len - 1); + + /* + * If the start pattern has another highlight group, push another item + * on the stack for the start pattern. + */ + if ( spp->sp_type == SPTYPE_START + && spp->sp_syn_match_id != 0 + && push_current_state(next_match_idx) == OK) + { + cur_si = &CUR_STATE(current_state.ga_len - 1); + cur_si->si_h_startpos = next_match_h_startpos; + cur_si->si_m_startcol = current_col; + cur_si->si_m_lnum = current_lnum; + cur_si->si_m_endpos = next_match_eos_pos; + cur_si->si_h_endpos = next_match_eos_pos; + cur_si->si_ends = TRUE; + cur_si->si_end_idx = 0; + cur_si->si_flags = HL_MATCH; + cur_si->si_next_list = NULL; + check_keepend(); + update_si_attr(current_state.ga_len - 1); + } + } + + next_match_idx = -1; /* try other match next time */ + + return cur_si; +} + +/* + * Check for end of current state (and the states before it). + */ + static void +check_state_ends() +{ + stateitem_T *cur_si; + int had_extend = FALSE; + + cur_si = &CUR_STATE(current_state.ga_len - 1); + for (;;) + { + if (cur_si->si_ends + && (cur_si->si_m_endpos.lnum < current_lnum + || (cur_si->si_m_endpos.lnum == current_lnum + && cur_si->si_m_endpos.col <= current_col))) + { + /* + * If there is an end pattern group ID, highlight the end pattern + * now. No need to pop the current item from the stack. + * Only do this if the end pattern continues beyond the current + * position. + */ + if (cur_si->si_end_idx + && (cur_si->si_eoe_pos.lnum > current_lnum + || (cur_si->si_eoe_pos.lnum == current_lnum + && cur_si->si_eoe_pos.col > current_col))) + { + cur_si->si_idx = cur_si->si_end_idx; + cur_si->si_end_idx = 0; + cur_si->si_m_endpos = cur_si->si_eoe_pos; + cur_si->si_h_endpos = cur_si->si_eoe_pos; + cur_si->si_flags |= HL_MATCH; + update_si_attr(current_state.ga_len - 1); + break; + } + else + { + /* handle next_list, unless at end of line and no "skipnl" or + * "skipempty" */ + current_next_list = cur_si->si_next_list; + current_next_flags = cur_si->si_flags; + if (!(current_next_flags & (HL_SKIPNL | HL_SKIPEMPTY)) + && syn_getcurline()[current_col] == NUL) + current_next_list = NULL; + + /* When the ended item has "extend", another item with + * "keepend" now needs to check for its end. */ + if (cur_si->si_flags & HL_EXTEND) + had_extend = TRUE; + + pop_current_state(); + + if (current_state.ga_len == 0) + break; + + if (had_extend) + { + syn_update_ends(FALSE); + if (current_state.ga_len == 0) + break; + } + + cur_si = &CUR_STATE(current_state.ga_len - 1); + + /* + * Only for a region the search for the end continues after + * the end of the contained item. If the contained match + * included the end-of-line, break here, the region continues. + * Don't do this when: + * - "keepend" is used for the contained item + * - not at the end of the line (could be end="x$"me=e-1). + * - "excludenl" is used (HL_HAS_EOL won't be set) + */ + if (cur_si->si_idx >= 0 + && SYN_ITEMS(syn_buf)[cur_si->si_idx].sp_type + == SPTYPE_START + && !(cur_si->si_flags & (HL_MATCH | HL_KEEPEND))) + { + update_si_end(cur_si, (int)current_col, TRUE); + check_keepend(); + if ((current_next_flags & HL_HAS_EOL) + && keepend_level < 0 + && syn_getcurline()[current_col] == NUL) + break; + } + } + } + else + break; + } +} + +/* + * Update an entry in the current_state stack for a match or region. This + * fills in si_attr, si_next_list and si_cont_list. + */ + static void +update_si_attr(idx) + int idx; +{ + stateitem_T *sip = &CUR_STATE(idx); + synpat_T *spp; + + spp = &(SYN_ITEMS(syn_buf)[sip->si_idx]); + if (sip->si_flags & HL_MATCH) + sip->si_id = spp->sp_syn_match_id; + else + sip->si_id = spp->sp_syn.id; + sip->si_attr = syn_id2attr(sip->si_id); + sip->si_trans_id = sip->si_id; + if (sip->si_flags & HL_MATCH) + sip->si_cont_list = NULL; + else + sip->si_cont_list = spp->sp_cont_list; + + /* + * For transparent items, take attr from outer item. + * Also take cont_list, if there is none. + * Don't do this for the matchgroup of a start or end pattern. + */ + if ((spp->sp_flags & HL_TRANSP) && !(sip->si_flags & HL_MATCH)) + { + if (idx == 0) + { + sip->si_attr = 0; + sip->si_trans_id = 0; + if (sip->si_cont_list == NULL) + sip->si_cont_list = ID_LIST_ALL; + } + else + { + sip->si_attr = CUR_STATE(idx - 1).si_attr; + sip->si_trans_id = CUR_STATE(idx - 1).si_trans_id; + if (sip->si_cont_list == NULL) + { + sip->si_flags |= HL_TRANS_CONT; + sip->si_cont_list = CUR_STATE(idx - 1).si_cont_list; + } + } + } +} + +/* + * Check the current stack for patterns with "keepend" flag. + * Propagate the match-end to contained items, until a "skipend" item is found. + */ + static void +check_keepend() +{ + int i; + lpos_T maxpos; + stateitem_T *sip; + + /* + * This check can consume a lot of time; only do it from the level where + * there really is a keepend. + */ + if (keepend_level < 0) + return; + + /* + * Find the last index of an "extend" item. "keepend" items before that + * won't do anything. If there is no "extend" item "i" will be + * "keepend_level" and all "keepend" items will work normally. + */ + for (i = current_state.ga_len - 1; i > keepend_level; --i) + if (CUR_STATE(i).si_flags & HL_EXTEND) + break; + + maxpos.lnum = 0; + for ( ; i < current_state.ga_len; ++i) + { + sip = &CUR_STATE(i); + if (maxpos.lnum != 0) + { + limit_pos_zero(&sip->si_m_endpos, &maxpos); + limit_pos_zero(&sip->si_h_endpos, &maxpos); + limit_pos_zero(&sip->si_eoe_pos, &maxpos); + sip->si_ends = TRUE; + } + if (sip->si_ends + && (sip->si_flags & HL_KEEPEND) + && (maxpos.lnum == 0 + || maxpos.lnum > sip->si_m_endpos.lnum + || (maxpos.lnum == sip->si_m_endpos.lnum + && maxpos.col > sip->si_m_endpos.col))) + maxpos = sip->si_m_endpos; + } +} + +/* + * Update an entry in the current_state stack for a start-skip-end pattern. + * This finds the end of the current item, if it's in the current line. + * + * Return the flags for the matched END. + */ + static void +update_si_end(sip, startcol, force) + stateitem_T *sip; + int startcol; /* where to start searching for the end */ + int force; /* when TRUE overrule a previous end */ +{ + lpos_T startpos; + lpos_T endpos; + lpos_T hl_endpos; + lpos_T end_endpos; + int end_idx; + + /* Don't update when it's already done. Can be a match of an end pattern + * that started in a previous line. Watch out: can also be a "keepend" + * from a containing item. */ + if (!force && sip->si_m_endpos.lnum >= current_lnum) + return; + + /* + * We need to find the end of the region. It may continue in the next + * line. + */ + end_idx = 0; + startpos.lnum = current_lnum; + startpos.col = startcol; + find_endpos(sip->si_idx, &startpos, &endpos, &hl_endpos, + &(sip->si_flags), &end_endpos, &end_idx, sip->si_extmatch); + + if (endpos.lnum == 0) + { + /* No end pattern matched. */ + if (SYN_ITEMS(syn_buf)[sip->si_idx].sp_flags & HL_ONELINE) + { + /* a "oneline" never continues in the next line */ + sip->si_ends = TRUE; + sip->si_m_endpos.lnum = current_lnum; + sip->si_m_endpos.col = (colnr_T)STRLEN(syn_getcurline()); + } + else + { + /* continues in the next line */ + sip->si_ends = FALSE; + sip->si_m_endpos.lnum = 0; + } + sip->si_h_endpos = sip->si_m_endpos; + } + else + { + /* match within this line */ + sip->si_m_endpos = endpos; + sip->si_h_endpos = hl_endpos; + sip->si_eoe_pos = end_endpos; + sip->si_ends = TRUE; + sip->si_end_idx = end_idx; + } +} + +/* + * Add a new state to the current state stack. + * It is cleared and the index set to "idx". + * Return FAIL if it's not possible (out of memory). + */ + static int +push_current_state(idx) + int idx; +{ + if (ga_grow(¤t_state, 1) == FAIL) + return FAIL; + vim_memset(&CUR_STATE(current_state.ga_len), 0, sizeof(stateitem_T)); + CUR_STATE(current_state.ga_len).si_idx = idx; + ++current_state.ga_len; + --current_state.ga_room; + return OK; +} + +/* + * Remove a state from the current_state stack. + */ + static void +pop_current_state() +{ + if (current_state.ga_len) + { + unref_extmatch(CUR_STATE(current_state.ga_len - 1).si_extmatch); + --current_state.ga_len; + ++current_state.ga_room; + } + /* after the end of a pattern, try matching a keyword or pattern */ + next_match_idx = -1; + + /* if first state with "keepend" is popped, reset keepend_level */ + if (keepend_level >= current_state.ga_len) + keepend_level = -1; +} + +/* + * Find the end of a start/skip/end syntax region after "startpos". + * Only checks one line. + * Also handles a match item that continued from a previous line. + * If not found, the syntax item continues in the next line. m_endpos->lnum + * will be 0. + * If found, the end of the region and the end of the highlighting is + * computed. + */ + static void +find_endpos(idx, startpos, m_endpos, hl_endpos, flagsp, end_endpos, + end_idx, start_ext) + int idx; /* index of the pattern */ + lpos_T *startpos; /* where to start looking for an END match */ + lpos_T *m_endpos; /* return: end of match */ + lpos_T *hl_endpos; /* return: end of highlighting */ + long *flagsp; /* return: flags of matching END */ + lpos_T *end_endpos; /* return: end of end pattern match */ + int *end_idx; /* return: group ID for end pat. match, or 0 */ + reg_extmatch_T *start_ext; /* submatches from the start pattern */ +{ + colnr_T matchcol; + synpat_T *spp, *spp_skip; + int start_idx; + int best_idx; + regmmatch_T regmatch; + regmmatch_T best_regmatch; /* startpos/endpos of best match */ + lpos_T pos; + char_u *line; + int had_match = FALSE; + + /* + * Check for being called with a START pattern. + * Can happen with a match that continues to the next line, because it + * contained a region. + */ + spp = &(SYN_ITEMS(syn_buf)[idx]); + if (spp->sp_type != SPTYPE_START) + { + *hl_endpos = *startpos; + return; + } + + /* + * Find the SKIP or first END pattern after the last START pattern. + */ + for (;;) + { + spp = &(SYN_ITEMS(syn_buf)[idx]); + if (spp->sp_type != SPTYPE_START) + break; + ++idx; + } + + /* + * Lookup the SKIP pattern (if present) + */ + if (spp->sp_type == SPTYPE_SKIP) + { + spp_skip = spp; + ++idx; + } + else + spp_skip = NULL; + + /* Setup external matches for syn_regexec(). */ + unref_extmatch(re_extmatch_in); + re_extmatch_in = ref_extmatch(start_ext); + + matchcol = startpos->col; /* start looking for a match at sstart */ + start_idx = idx; /* remember the first END pattern. */ + best_regmatch.startpos[0].col = 0; /* avoid compiler warning */ + for (;;) + { + /* + * Find end pattern that matches first after "matchcol". + */ + best_idx = -1; + for (idx = start_idx; idx < syn_buf->b_syn_patterns.ga_len; ++idx) + { + int lc_col = matchcol; + + spp = &(SYN_ITEMS(syn_buf)[idx]); + if (spp->sp_type != SPTYPE_END) /* past last END pattern */ + break; + lc_col -= spp->sp_offsets[SPO_LC_OFF]; + if (lc_col < 0) + lc_col = 0; + + regmatch.rmm_ic = spp->sp_ic; + regmatch.regprog = spp->sp_prog; + if (syn_regexec(®match, startpos->lnum, lc_col)) + { + if (best_idx == -1 || regmatch.startpos[0].col + < best_regmatch.startpos[0].col) + { + best_idx = idx; + best_regmatch.startpos[0] = regmatch.startpos[0]; + best_regmatch.endpos[0] = regmatch.endpos[0]; + } + } + } + + /* + * If all end patterns have been tried, and there is no match, the + * item continues until end-of-line. + */ + if (best_idx == -1) + break; + + /* + * If the skip pattern matches before the end pattern, + * continue searching after the skip pattern. + */ + if (spp_skip != NULL) + { + int lc_col = matchcol - spp_skip->sp_offsets[SPO_LC_OFF]; + + if (lc_col < 0) + lc_col = 0; + regmatch.rmm_ic = spp_skip->sp_ic; + regmatch.regprog = spp_skip->sp_prog; + if (syn_regexec(®match, startpos->lnum, lc_col) + && regmatch.startpos[0].col + <= best_regmatch.startpos[0].col) + { + /* Add offset to skip pattern match */ + syn_add_end_off(&pos, ®match, spp_skip, SPO_ME_OFF, 1); + + /* If the skip pattern goes on to the next line, there is no + * match with an end pattern in this line. */ + if (pos.lnum > startpos->lnum) + break; + + line = ml_get_buf(syn_buf, startpos->lnum, FALSE); + + /* take care of an empty match or negative offset */ + if (pos.col <= matchcol) + ++matchcol; + else if (pos.col <= regmatch.endpos[0].col) + matchcol = pos.col; + else + /* Be careful not to jump over the NUL at the end-of-line */ + for (matchcol = regmatch.endpos[0].col; + line[matchcol] != NUL && matchcol < pos.col; + ++matchcol) + ; + + /* if the skip pattern includes end-of-line, break here */ + if (line[matchcol] == NUL) + break; + + continue; /* start with first end pattern again */ + } + } + + /* + * Match from start pattern to end pattern. + * Correct for match and highlight offset of end pattern. + */ + spp = &(SYN_ITEMS(syn_buf)[best_idx]); + syn_add_end_off(m_endpos, &best_regmatch, spp, SPO_ME_OFF, 1); + /* can't end before the start */ + if (m_endpos->lnum == startpos->lnum && m_endpos->col < startpos->col) + m_endpos->col = startpos->col; + + syn_add_end_off(end_endpos, &best_regmatch, spp, SPO_HE_OFF, 1); + /* can't end before the start */ + if (end_endpos->lnum == startpos->lnum + && end_endpos->col < startpos->col) + end_endpos->col = startpos->col; + /* can't end after the match */ + limit_pos(end_endpos, m_endpos); + + /* + * If the end group is highlighted differently, adjust the pointers. + */ + if (spp->sp_syn_match_id != spp->sp_syn.id && spp->sp_syn_match_id != 0) + { + *end_idx = best_idx; + if (spp->sp_off_flags & (1 << (SPO_RE_OFF + SPO_COUNT))) + { + hl_endpos->lnum = best_regmatch.endpos[0].lnum; + hl_endpos->col = best_regmatch.endpos[0].col; + } + else + { + hl_endpos->lnum = best_regmatch.startpos[0].lnum; + hl_endpos->col = best_regmatch.startpos[0].col; + } + hl_endpos->col += spp->sp_offsets[SPO_RE_OFF]; + + /* can't end before the start */ + if (hl_endpos->lnum == startpos->lnum + && hl_endpos->col < startpos->col) + hl_endpos->col = startpos->col; + limit_pos(hl_endpos, m_endpos); + + /* now the match ends where the highlighting ends, it is turned + * into the matchgroup for the end */ + *m_endpos = *hl_endpos; + } + else + { + *end_idx = 0; + *hl_endpos = *end_endpos; + } + + *flagsp = spp->sp_flags; + + had_match = TRUE; + break; + } + + /* no match for an END pattern in this line */ + if (!had_match) + m_endpos->lnum = 0; + + /* Remove external matches. */ + unref_extmatch(re_extmatch_in); + re_extmatch_in = NULL; +} + +/* + * Limit "pos" not to be after "limit". + */ + static void +limit_pos(pos, limit) + lpos_T *pos; + lpos_T *limit; +{ + if (pos->lnum > limit->lnum) + *pos = *limit; + else if (pos->lnum == limit->lnum && pos->col > limit->col) + pos->col = limit->col; +} + +/* + * Limit "pos" not to be after "limit", unless pos->lnum is zero. + */ + static void +limit_pos_zero(pos, limit) + lpos_T *pos; + lpos_T *limit; +{ + if (pos->lnum == 0) + *pos = *limit; + else + limit_pos(pos, limit); +} + +/* + * Add offset to matched text for end of match or highlight. + */ + static void +syn_add_end_off(result, regmatch, spp, idx, extra) + lpos_T *result; /* returned position */ + regmmatch_T *regmatch; /* start/end of match */ + synpat_T *spp; /* matched pattern */ + int idx; /* index of offset */ + int extra; /* extra chars for offset to start */ +{ + int col; + + if (spp->sp_off_flags & (1 << idx)) + { + result->lnum = regmatch->startpos[0].lnum; + col = regmatch->startpos[0].col + extra; + } + else + { + result->lnum = regmatch->endpos[0].lnum; + col = regmatch->endpos[0].col; + } + col += spp->sp_offsets[idx]; + if (col < 0) + result->col = 0; + else + result->col = col; +} + +/* + * Add offset to matched text for start of match or highlight. + * Avoid resulting column to become negative. + */ + static void +syn_add_start_off(result, regmatch, spp, idx, extra) + lpos_T *result; /* returned position */ + regmmatch_T *regmatch; /* start/end of match */ + synpat_T *spp; + int idx; + int extra; /* extra chars for offset to end */ +{ + int col; + + if (spp->sp_off_flags & (1 << (idx + SPO_COUNT))) + { + result->lnum = regmatch->endpos[0].lnum; + col = regmatch->endpos[0].col + extra; + } + else + { + result->lnum = regmatch->startpos[0].lnum; + col = regmatch->startpos[0].col; + } + col += spp->sp_offsets[idx]; + if (col < 0) + result->col = 0; + else + result->col = col; +} + +/* + * Get current line in syntax buffer. + */ + static char_u * +syn_getcurline() +{ + return ml_get_buf(syn_buf, current_lnum, FALSE); +} + +/* + * Call vim_regexec() to match in syn_buf. + * Returns TRUE when there is a match. + */ + static int +syn_regexec(rmp, lnum, col) + regmmatch_T *rmp; + linenr_T lnum; + colnr_T col; +{ + if (vim_regexec_multi(rmp, syn_win, syn_buf, lnum, col) > 0) + { + rmp->startpos[0].lnum += lnum; + rmp->endpos[0].lnum += lnum; + return TRUE; + } + return FALSE; +} + +/* + * Check one position in a line for a matching keyword. + * The caller must check if a keyword can start at startcol. + * Return it's ID if found, 0 otherwise. + */ + static int +check_keyword_id(line, startcol, endcolp, flagsp, next_listp, cur_si) + char_u *line; + int startcol; /* position in line to check for keyword */ + int *endcolp; /* return: character after found keyword */ + long *flagsp; /* return: flags of matching keyword */ + short **next_listp; /* return: next_list of matching keyword */ + stateitem_T *cur_si; /* item at the top of the stack */ +{ + keyentry_T *ktab; + char_u *p; + int round; + int len; + char_u keyword[MAXKEYWLEN + 1]; /* assume max. keyword len is 80 */ + + /* Find first character after the keyword. First character was already + * checked. */ + p = line + startcol; + len = 0; + do + { +#ifdef FEAT_MBYTE + if (has_mbyte) + len += (*mb_ptr2len_check)(p + len); + else +#endif + ++len; + } + while (vim_iswordc_buf(p + len, syn_buf)); + + if (len > MAXKEYWLEN) + return 0; + + /* + * Must make a copy of the keyword, so we can add a NUL and make it + * lowercase. + */ + STRNCPY(keyword, p, len); + keyword[len] = NUL; + + /* + * Try twice: + * 1. matching case + * 2. ignoring case + */ + for (round = 1; round <= 2; ++round) + { + if ((round == 1 ? syn_buf->b_keywtab : syn_buf->b_keywtab_ic) == NULL) + continue; + if (round == 1) /* match case */ + ktab = syn_buf->b_keywtab[syn_khash(keyword)]; + else /* round == 2, ignore case */ + { + p = str_foldcase(keyword, (int)STRLEN(keyword)); + if (p != NULL) + { + STRNCPY(keyword, p, MAXKEYWLEN); + keyword[MAXKEYWLEN] = NUL; + vim_free(p); + } + ktab = syn_buf->b_keywtab_ic[syn_khash(keyword)]; + } + + /* + * Find keywords that match. + * When current_next_list is non-zero accept only that group, otherwise: + * Accept a not-contained keyword at toplevel. + * Accept a keyword at other levels only if it is in the contains list. + */ + for ( ; ktab != NULL; ktab = ktab->next) + if ( STRCMP(keyword, ktab->keyword) == 0 + && (current_next_list != 0 + ? in_id_list(NULL, current_next_list, &ktab->k_syn, 0) + : (cur_si == NULL + ? !(ktab->flags & HL_CONTAINED) + : in_id_list(cur_si, cur_si->si_cont_list, + &ktab->k_syn, ktab->flags & HL_CONTAINED)))) + { + *endcolp = startcol + len; + *flagsp = ktab->flags; + *next_listp = ktab->next_list; + return ktab->k_syn.id; + } + } + return 0; +} + +/* + * Handle ":syntax case" command. + */ +/* ARGSUSED */ + static void +syn_cmd_case(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + char_u *arg = eap->arg; + char_u *next; + + eap->nextcmd = find_nextcmd(arg); + if (eap->skip) + return; + + next = skiptowhite(arg); + if (STRNICMP(arg, "match", 5) == 0 && next - arg == 5) + curbuf->b_syn_ic = FALSE; + else if (STRNICMP(arg, "ignore", 6) == 0 && next - arg == 6) + curbuf->b_syn_ic = TRUE; + else + EMSG2(_("E390: Illegal argument: %s"), arg); +} + +/* + * Clear all syntax info for one buffer. + */ + void +syntax_clear(buf) + buf_T *buf; +{ + int i; + + curbuf->b_syn_ic = FALSE; /* Use case, by default */ + curbuf->b_syn_containedin = FALSE; + + /* free the keywords */ + free_keywtab(buf->b_keywtab); + buf->b_keywtab = NULL; + free_keywtab(buf->b_keywtab_ic); + buf->b_keywtab_ic = NULL; + + /* free the syntax patterns */ + for (i = buf->b_syn_patterns.ga_len; --i >= 0; ) + syn_clear_pattern(buf, i); + ga_clear(&buf->b_syn_patterns); + + /* free the syntax clusters */ + for (i = buf->b_syn_clusters.ga_len; --i >= 0; ) + syn_clear_cluster(buf, i); + ga_clear(&buf->b_syn_clusters); + + buf->b_syn_sync_flags = 0; + buf->b_syn_sync_minlines = 0; + buf->b_syn_sync_maxlines = 0; + buf->b_syn_sync_linebreaks = 0; + + vim_free(buf->b_syn_linecont_prog); + buf->b_syn_linecont_prog = NULL; + vim_free(buf->b_syn_linecont_pat); + buf->b_syn_linecont_pat = NULL; +#ifdef FEAT_FOLDING + buf->b_syn_folditems = 0; +#endif + + /* free the stored states */ + syn_stack_free_all(buf); + invalidate_current_state(); +} + +/* + * Clear syncing info for one buffer. + */ + static void +syntax_sync_clear() +{ + int i; + + /* free the syntax patterns */ + for (i = curbuf->b_syn_patterns.ga_len; --i >= 0; ) + if (SYN_ITEMS(curbuf)[i].sp_syncing) + syn_remove_pattern(curbuf, i); + + curbuf->b_syn_sync_flags = 0; + curbuf->b_syn_sync_minlines = 0; + curbuf->b_syn_sync_maxlines = 0; + curbuf->b_syn_sync_linebreaks = 0; + + vim_free(curbuf->b_syn_linecont_prog); + curbuf->b_syn_linecont_prog = NULL; + vim_free(curbuf->b_syn_linecont_pat); + curbuf->b_syn_linecont_pat = NULL; + + syn_stack_free_all(curbuf); /* Need to recompute all syntax. */ +} + +/* + * Remove one pattern from the buffer's pattern list. + */ + static void +syn_remove_pattern(buf, idx) + buf_T *buf; + int idx; +{ + synpat_T *spp; + + spp = &(SYN_ITEMS(buf)[idx]); +#ifdef FEAT_FOLDING + if (spp->sp_flags & HL_FOLD) + --buf->b_syn_folditems; +#endif + syn_clear_pattern(buf, idx); + mch_memmove(spp, spp + 1, + sizeof(synpat_T) * (buf->b_syn_patterns.ga_len - idx - 1)); + --buf->b_syn_patterns.ga_len; + --buf->b_syn_patterns.ga_room; +} + +/* + * Clear and free one syntax pattern. When clearing all, must be called from + * last to first! + */ + static void +syn_clear_pattern(buf, i) + buf_T *buf; + int i; +{ + vim_free(SYN_ITEMS(buf)[i].sp_pattern); + vim_free(SYN_ITEMS(buf)[i].sp_prog); + /* Only free sp_cont_list and sp_next_list of first start pattern */ + if (i == 0 || SYN_ITEMS(buf)[i - 1].sp_type != SPTYPE_START) + { + vim_free(SYN_ITEMS(buf)[i].sp_cont_list); + vim_free(SYN_ITEMS(buf)[i].sp_next_list); + } +} + +/* + * Clear and free one syntax cluster. + */ + static void +syn_clear_cluster(buf, i) + buf_T *buf; + int i; +{ + vim_free(SYN_CLSTR(buf)[i].scl_name); + vim_free(SYN_CLSTR(buf)[i].scl_name_u); + vim_free(SYN_CLSTR(buf)[i].scl_list); +} + +/* + * Handle ":syntax clear" command. + */ + static void +syn_cmd_clear(eap, syncing) + exarg_T *eap; + int syncing; +{ + char_u *arg = eap->arg; + char_u *arg_end; + int id; + + eap->nextcmd = find_nextcmd(arg); + if (eap->skip) + return; + + /* + * We have to disable this within ":syn include @group filename", + * because otherwise @group would get deleted. + * Only required for Vim 5.x syntax files, 6.0 ones don't contain ":syn + * clear". + */ + if (curbuf->b_syn_topgrp != 0) + return; + + if (ends_excmd(*arg)) + { + /* + * No argument: Clear all syntax items. + */ + if (syncing) + syntax_sync_clear(); + else + { + syntax_clear(curbuf); + do_unlet((char_u *)"b:current_syntax"); + } + } + else + { + /* + * Clear the group IDs that are in the argument. + */ + while (!ends_excmd(*arg)) + { + arg_end = skiptowhite(arg); + if (*arg == '@') + { + id = syn_scl_namen2id(arg + 1, (int)(arg_end - arg - 1)); + if (id == 0) + { + EMSG2(_("E391: No such syntax cluster: %s"), arg); + break; + } + else + { + /* + * We can't physically delete a cluster without changing + * the IDs of other clusters, so we do the next best thing + * and make it empty. + */ + short scl_id = id - SYNID_CLUSTER; + + vim_free(SYN_CLSTR(curbuf)[scl_id].scl_list); + SYN_CLSTR(curbuf)[scl_id].scl_list = NULL; + } + } + else + { + id = syn_namen2id(arg, (int)(arg_end - arg)); + if (id == 0) + { + EMSG2(_(e_nogroup), arg); + break; + } + else + syn_clear_one(id, syncing); + } + arg = skipwhite(arg_end); + } + } + redraw_curbuf_later(NOT_VALID); + syn_stack_free_all(curbuf); /* Need to recompute all syntax. */ +} + +/* + * Clear one syntax group for the current buffer. + */ + static void +syn_clear_one(id, syncing) + int id; + int syncing; +{ + synpat_T *spp; + int idx; + + /* Clear keywords only when not ":syn sync clear group-name" */ + if (!syncing) + { + (void)syn_clear_keyword(id, curbuf->b_keywtab); + (void)syn_clear_keyword(id, curbuf->b_keywtab_ic); + } + + /* clear the patterns for "id" */ + for (idx = curbuf->b_syn_patterns.ga_len; --idx >= 0; ) + { + spp = &(SYN_ITEMS(curbuf)[idx]); + if (spp->sp_syn.id != id || spp->sp_syncing != syncing) + continue; + syn_remove_pattern(curbuf, idx); + } +} + +/* + * Handle ":syntax on" command. + */ +/* ARGSUSED */ + static void +syn_cmd_on(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + syn_cmd_onoff(eap, "syntax"); +} + +/* + * Handle ":syntax enable" command. + */ +/* ARGSUSED */ + static void +syn_cmd_enable(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + set_internal_string_var((char_u *)"syntax_cmd", (char_u *)"enable"); + syn_cmd_onoff(eap, "syntax"); + do_unlet((char_u *)"g:syntax_cmd"); +} + +/* + * Handle ":syntax reset" command. + */ +/* ARGSUSED */ + static void +syn_cmd_reset(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + eap->nextcmd = check_nextcmd(eap->arg); + if (!eap->skip) + { + set_internal_string_var((char_u *)"syntax_cmd", (char_u *)"reset"); + do_cmdline_cmd((char_u *)"runtime! syntax/syncolor.vim"); + do_unlet((char_u *)"g:syntax_cmd"); + } +} + +/* + * Handle ":syntax manual" command. + */ +/* ARGSUSED */ + static void +syn_cmd_manual(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + syn_cmd_onoff(eap, "manual"); +} + +/* + * Handle ":syntax off" command. + */ +/* ARGSUSED */ + static void +syn_cmd_off(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + syn_cmd_onoff(eap, "nosyntax"); +} + + static void +syn_cmd_onoff(eap, name) + exarg_T *eap; + char *name; +{ + char_u buf[100]; + + eap->nextcmd = check_nextcmd(eap->arg); + if (!eap->skip) + { + STRCPY(buf, "so "); + sprintf((char *)buf + 3, SYNTAX_FNAME, name); + do_cmdline_cmd(buf); + } +} + +/* + * Handle ":syntax [list]" command: list current syntax words. + */ + static void +syn_cmd_list(eap, syncing) + exarg_T *eap; + int syncing; /* when TRUE: list syncing items */ +{ + char_u *arg = eap->arg; + int id; + char_u *arg_end; + + eap->nextcmd = find_nextcmd(arg); + if (eap->skip) + return; + + if (!syntax_present(curbuf)) + { + MSG(_("No Syntax items defined for this buffer")); + return; + } + + if (syncing) + { + if (curbuf->b_syn_sync_flags & SF_CCOMMENT) + { + MSG_PUTS(_("syncing on C-style comments")); + syn_lines_msg(); + syn_match_msg(); + return; + } + else if (!(curbuf->b_syn_sync_flags & SF_MATCH)) + { + if (curbuf->b_syn_sync_minlines == 0) + MSG_PUTS(_("no syncing")); + else + { + MSG_PUTS(_("syncing starts ")); + msg_outnum(curbuf->b_syn_sync_minlines); + MSG_PUTS(_(" lines before top line")); + syn_match_msg(); + } + return; + } + MSG_PUTS_TITLE(_("\n--- Syntax sync items ---")); + if (curbuf->b_syn_sync_minlines > 0 + || curbuf->b_syn_sync_maxlines > 0 + || curbuf->b_syn_sync_linebreaks > 0) + { + MSG_PUTS(_("\nsyncing on items")); + syn_lines_msg(); + syn_match_msg(); + } + } + else + MSG_PUTS_TITLE(_("\n--- Syntax items ---")); + if (ends_excmd(*arg)) + { + /* + * No argument: List all group IDs and all syntax clusters. + */ + for (id = 1; id <= highlight_ga.ga_len && !got_int; ++id) + syn_list_one(id, syncing, FALSE); + for (id = 0; id < curbuf->b_syn_clusters.ga_len && !got_int; ++id) + syn_list_cluster(id); + } + else + { + /* + * List the group IDs and syntax clusters that are in the argument. + */ + while (!ends_excmd(*arg) && !got_int) + { + arg_end = skiptowhite(arg); + if (*arg == '@') + { + id = syn_scl_namen2id(arg + 1, (int)(arg_end - arg - 1)); + if (id == 0) + EMSG2(_("E392: No such syntax cluster: %s"), arg); + else + syn_list_cluster(id - SYNID_CLUSTER); + } + else + { + id = syn_namen2id(arg, (int)(arg_end - arg)); + if (id == 0) + EMSG2(_(e_nogroup), arg); + else + syn_list_one(id, syncing, TRUE); + } + arg = skipwhite(arg_end); + } + } + eap->nextcmd = check_nextcmd(arg); +} + + static void +syn_lines_msg() +{ + if (curbuf->b_syn_sync_maxlines > 0 || curbuf->b_syn_sync_minlines > 0) + { + MSG_PUTS("; "); + if (curbuf->b_syn_sync_minlines > 0) + { + MSG_PUTS(_("minimal ")); + msg_outnum(curbuf->b_syn_sync_minlines); + if (curbuf->b_syn_sync_maxlines) + MSG_PUTS(", "); + } + if (curbuf->b_syn_sync_maxlines > 0) + { + MSG_PUTS(_("maximal ")); + msg_outnum(curbuf->b_syn_sync_maxlines); + } + MSG_PUTS(_(" lines before top line")); + } +} + + static void +syn_match_msg() +{ + if (curbuf->b_syn_sync_linebreaks > 0) + { + MSG_PUTS(_("; match ")); + msg_outnum(curbuf->b_syn_sync_linebreaks); + MSG_PUTS(_(" line breaks")); + } +} + +static int last_matchgroup; + +struct name_list +{ + int flag; + char *name; +}; + +static void syn_list_flags __ARGS((struct name_list *nl, int flags, int attr)); + +/* + * List one syntax item, for ":syntax" or "syntax list syntax_name". + */ + static void +syn_list_one(id, syncing, link_only) + int id; + int syncing; /* when TRUE: list syncing items */ + int link_only; /* when TRUE; list link-only too */ +{ + int attr; + int idx; + int did_header = FALSE; + synpat_T *spp; + static struct name_list namelist1[] = + { + {HL_DISPLAY, "display"}, + {HL_CONTAINED, "contained"}, + {HL_ONELINE, "oneline"}, + {HL_KEEPEND, "keepend"}, + {HL_EXTEND, "extend"}, + {HL_EXCLUDENL, "excludenl"}, + {HL_TRANSP, "transparent"}, + {HL_FOLD, "fold"}, + {0, NULL} + }; + static struct name_list namelist2[] = + { + {HL_SKIPWHITE, "skipwhite"}, + {HL_SKIPNL, "skipnl"}, + {HL_SKIPEMPTY, "skipempty"}, + {0, NULL} + }; + + attr = hl_attr(HLF_D); /* highlight like directories */ + + /* list the keywords for "id" */ + if (!syncing) + { + did_header = syn_list_keywords(id, curbuf->b_keywtab, FALSE, attr); + did_header = syn_list_keywords(id, curbuf->b_keywtab_ic, + did_header, attr); + } + + /* list the patterns for "id" */ + for (idx = 0; idx < curbuf->b_syn_patterns.ga_len && !got_int; ++idx) + { + spp = &(SYN_ITEMS(curbuf)[idx]); + if (spp->sp_syn.id != id || spp->sp_syncing != syncing) + continue; + + (void)syn_list_header(did_header, 999, id); + did_header = TRUE; + last_matchgroup = 0; + if (spp->sp_type == SPTYPE_MATCH) + { + put_pattern("match", ' ', spp, attr); + msg_putchar(' '); + } + else if (spp->sp_type == SPTYPE_START) + { + while (SYN_ITEMS(curbuf)[idx].sp_type == SPTYPE_START) + put_pattern("start", '=', &SYN_ITEMS(curbuf)[idx++], attr); + if (SYN_ITEMS(curbuf)[idx].sp_type == SPTYPE_SKIP) + put_pattern("skip", '=', &SYN_ITEMS(curbuf)[idx++], attr); + while (idx < curbuf->b_syn_patterns.ga_len + && SYN_ITEMS(curbuf)[idx].sp_type == SPTYPE_END) + put_pattern("end", '=', &SYN_ITEMS(curbuf)[idx++], attr); + --idx; + msg_putchar(' '); + } + syn_list_flags(namelist1, spp->sp_flags, attr); + + if (spp->sp_cont_list != NULL) + put_id_list((char_u *)"contains", spp->sp_cont_list, attr); + + if (spp->sp_syn.cont_in_list != NULL) + put_id_list((char_u *)"containedin", + spp->sp_syn.cont_in_list, attr); + + if (spp->sp_next_list != NULL) + { + put_id_list((char_u *)"nextgroup", spp->sp_next_list, attr); + syn_list_flags(namelist2, spp->sp_flags, attr); + } + if (spp->sp_flags & (HL_SYNC_HERE|HL_SYNC_THERE)) + { + if (spp->sp_flags & HL_SYNC_HERE) + msg_puts_attr((char_u *)"grouphere", attr); + else + msg_puts_attr((char_u *)"groupthere", attr); + msg_putchar(' '); + if (spp->sp_sync_idx >= 0) + msg_outtrans(HL_TABLE()[SYN_ITEMS(curbuf) + [spp->sp_sync_idx].sp_syn.id - 1].sg_name); + else + MSG_PUTS("NONE"); + msg_putchar(' '); + } + } + + /* list the link, if there is one */ + if (HL_TABLE()[id - 1].sg_link && (did_header || link_only) && !got_int) + { + (void)syn_list_header(did_header, 999, id); + msg_puts_attr((char_u *)"links to", attr); + msg_putchar(' '); + msg_outtrans(HL_TABLE()[HL_TABLE()[id - 1].sg_link - 1].sg_name); + } +} + + static void +syn_list_flags(nl, flags, attr) + struct name_list *nl; + int flags; + int attr; +{ + int i; + + for (i = 0; nl[i].flag != 0; ++i) + if (flags & nl[i].flag) + { + msg_puts_attr((char_u *)nl[i].name, attr); + msg_putchar(' '); + } +} + +/* + * List one syntax cluster, for ":syntax" or "syntax list syntax_name". + */ + static void +syn_list_cluster(id) + int id; +{ + int endcol = 15; + + /* slight hack: roughly duplicate the guts of syn_list_header() */ + msg_putchar('\n'); + msg_outtrans(SYN_CLSTR(curbuf)[id].scl_name); + + if (msg_col >= endcol) /* output at least one space */ + endcol = msg_col + 1; + if (Columns <= endcol) /* avoid hang for tiny window */ + endcol = Columns - 1; + + msg_advance(endcol); + if (SYN_CLSTR(curbuf)[id].scl_list != NULL) + { + put_id_list((char_u *)"cluster", SYN_CLSTR(curbuf)[id].scl_list, + hl_attr(HLF_D)); + } + else + { + msg_puts_attr((char_u *)"cluster", hl_attr(HLF_D)); + msg_puts((char_u *)"=NONE"); + } +} + + static void +put_id_list(name, list, attr) + char_u *name; + short *list; + int attr; +{ + short *p; + + msg_puts_attr(name, attr); + msg_putchar('='); + for (p = list; *p; ++p) + { + if (*p >= SYNID_ALLBUT && *p < SYNID_TOP) + { + if (p[1]) + MSG_PUTS("ALLBUT"); + else + MSG_PUTS("ALL"); + } + else if (*p >= SYNID_TOP && *p < SYNID_CONTAINED) + { + MSG_PUTS("TOP"); + } + else if (*p >= SYNID_CONTAINED && *p < SYNID_CLUSTER) + { + MSG_PUTS("CONTAINED"); + } + else if (*p >= SYNID_CLUSTER) + { + short scl_id = *p - SYNID_CLUSTER; + + msg_putchar('@'); + msg_outtrans(SYN_CLSTR(curbuf)[scl_id].scl_name); + } + else + msg_outtrans(HL_TABLE()[*p - 1].sg_name); + if (p[1]) + msg_putchar(','); + } + msg_putchar(' '); +} + + static void +put_pattern(s, c, spp, attr) + char *s; + int c; + synpat_T *spp; + int attr; +{ + long n; + int mask; + int first; + static char *sepchars = "/+=-#@\"|'^&"; + int i; + + /* May have to write "matchgroup=group" */ + if (last_matchgroup != spp->sp_syn_match_id) + { + last_matchgroup = spp->sp_syn_match_id; + msg_puts_attr((char_u *)"matchgroup", attr); + msg_putchar('='); + if (last_matchgroup == 0) + msg_outtrans((char_u *)"NONE"); + else + msg_outtrans(HL_TABLE()[last_matchgroup - 1].sg_name); + msg_putchar(' '); + } + + /* output the name of the pattern and an '=' or ' ' */ + msg_puts_attr((char_u *)s, attr); + msg_putchar(c); + + /* output the pattern, in between a char that is not in the pattern */ + for (i = 0; vim_strchr(spp->sp_pattern, sepchars[i]) != NULL; ) + if (sepchars[++i] == NUL) + { + i = 0; /* no good char found, just use the first one */ + break; + } + msg_putchar(sepchars[i]); + msg_outtrans(spp->sp_pattern); + msg_putchar(sepchars[i]); + + /* output any pattern options */ + first = TRUE; + for (i = 0; i < SPO_COUNT; ++i) + { + mask = (1 << i); + if (spp->sp_off_flags & (mask + (mask << SPO_COUNT))) + { + if (!first) + msg_putchar(','); /* separate with commas */ + msg_puts((char_u *)spo_name_tab[i]); + n = spp->sp_offsets[i]; + if (i != SPO_LC_OFF) + { + if (spp->sp_off_flags & mask) + msg_putchar('s'); + else + msg_putchar('e'); + if (n > 0) + msg_putchar('+'); + } + if (n || i == SPO_LC_OFF) + msg_outnum(n); + first = FALSE; + } + } + msg_putchar(' '); +} + +/* + * List or clear the keywords for one syntax group. + * Return TRUE if the header has been printed. + */ + static int +syn_list_keywords(id, ktabp, did_header, attr) + int id; + keyentry_T **ktabp; + int did_header; /* header has already been printed */ + int attr; +{ + int i; + int outlen; + keyentry_T *ktab; + int prev_contained = 0; + short *prev_next_list = NULL; + short *prev_cont_in_list = NULL; + int prev_skipnl = 0; + int prev_skipwhite = 0; + int prev_skipempty = 0; + + if (ktabp == NULL) + return did_header; + + /* + * Unfortunately, this list of keywords is not sorted on alphabet but on + * hash value... + */ + for (i = 0; i < KHASH_SIZE; ++i) + { + for (ktab = ktabp[i]; ktab != NULL && !got_int; ktab = ktab->next) + { + if (ktab->k_syn.id == id) + { + if (prev_contained != (ktab->flags & HL_CONTAINED) + || prev_skipnl != (ktab->flags & HL_SKIPNL) + || prev_skipwhite != (ktab->flags & HL_SKIPWHITE) + || prev_skipempty != (ktab->flags & HL_SKIPEMPTY) + || prev_cont_in_list != ktab->k_syn.cont_in_list + || prev_next_list != ktab->next_list) + outlen = 9999; + else + outlen = (int)STRLEN(ktab->keyword); + /* output "contained" and "nextgroup" on each line */ + if (syn_list_header(did_header, outlen, id)) + { + prev_contained = 0; + prev_next_list = NULL; + prev_cont_in_list = NULL; + prev_skipnl = 0; + prev_skipwhite = 0; + prev_skipempty = 0; + } + did_header = TRUE; + if (prev_contained != (ktab->flags & HL_CONTAINED)) + { + msg_puts_attr((char_u *)"contained", attr); + msg_putchar(' '); + prev_contained = (ktab->flags & HL_CONTAINED); + } + if (ktab->k_syn.cont_in_list != prev_cont_in_list) + { + put_id_list((char_u *)"containedin", + ktab->k_syn.cont_in_list, attr); + msg_putchar(' '); + prev_cont_in_list = ktab->k_syn.cont_in_list; + } + if (ktab->next_list != prev_next_list) + { + put_id_list((char_u *)"nextgroup", ktab->next_list, attr); + msg_putchar(' '); + prev_next_list = ktab->next_list; + if (ktab->flags & HL_SKIPNL) + { + msg_puts_attr((char_u *)"skipnl", attr); + msg_putchar(' '); + prev_skipnl = (ktab->flags & HL_SKIPNL); + } + if (ktab->flags & HL_SKIPWHITE) + { + msg_puts_attr((char_u *)"skipwhite", attr); + msg_putchar(' '); + prev_skipwhite = (ktab->flags & HL_SKIPWHITE); + } + if (ktab->flags & HL_SKIPEMPTY) + { + msg_puts_attr((char_u *)"skipempty", attr); + msg_putchar(' '); + prev_skipempty = (ktab->flags & HL_SKIPEMPTY); + } + } + msg_outtrans(ktab->keyword); + } + } + } + + return did_header; +} + + static void +syn_clear_keyword(id, ktabp) + int id; + keyentry_T **ktabp; +{ + int i; + keyentry_T *ktab; + keyentry_T *ktab_prev; + keyentry_T *ktab_next; + + if (ktabp == NULL) /* no keywords present */ + return; + + for (i = 0; i < KHASH_SIZE; ++i) + { + ktab_prev = NULL; + for (ktab = ktabp[i]; ktab != NULL; ) + { + if (ktab->k_syn.id == id) + { + ktab_next = ktab->next; + if (ktab_prev == NULL) + ktabp[i] = ktab_next; + else + ktab_prev->next = ktab_next; + vim_free(ktab); + ktab = ktab_next; + } + else + { + ktab_prev = ktab; + ktab = ktab->next; + } + } + } +} + +/* + * Recursive function to free() a branch of a kwordtab. + */ + static void +free_keywtab(ktabp) + keyentry_T **ktabp; +{ + int i; + keyentry_T *ktab; + keyentry_T *ktab_next; + + if (ktabp != NULL) + { + for (i = 0; i < KHASH_SIZE; ++i) + for (ktab = ktabp[i]; ktab != NULL; ktab = ktab_next) + { + ktab_next = ktab->next; + vim_free(ktab->next_list); + vim_free(ktab->k_syn.cont_in_list); + vim_free(ktab); + } + vim_free(ktabp); + } +} + +/* + * Add a keyword to the list of keywords. + */ + static void +add_keyword(name, id, flags, cont_in_list, next_list) + char_u *name; /* name of keyword */ + int id; /* group ID for this keyword */ + int flags; /* flags for this keyword */ + short *cont_in_list; /* containedin for this keyword */ + short *next_list; /* nextgroup for this keyword */ +{ + keyentry_T *ktab; + keyentry_T ***ktabpp; + int hash; + char_u *name_ic = name; + + if (curbuf->b_syn_ic) + { + name_ic = str_foldcase(name, (int)STRLEN(name)); + if (name_ic == NULL) + name_ic = name; + } + ktab = (keyentry_T *)alloc((int)(sizeof(keyentry_T) + STRLEN(name_ic))); + if (ktab == NULL) + return; + STRCPY(ktab->keyword, name_ic); + if (name_ic != name) + vim_free(name_ic); + ktab->k_syn.id = id; + ktab->k_syn.inc_tag = current_syn_inc_tag; + ktab->flags = flags; + ktab->k_syn.cont_in_list = copy_id_list(cont_in_list); + if (cont_in_list != NULL) + curbuf->b_syn_containedin = TRUE; + ktab->next_list = copy_id_list(next_list); + + if (curbuf->b_syn_ic) + ktabpp = &curbuf->b_keywtab_ic; + else + ktabpp = &curbuf->b_keywtab; + + if (*ktabpp == NULL) + { + *ktabpp = (keyentry_T **)alloc_clear( + (int)(sizeof(keyentry_T *) * KHASH_SIZE)); + if (*ktabpp == NULL) + return; + } + + hash = syn_khash(ktab->keyword); + ktab->next = (*ktabpp)[hash]; + (*ktabpp)[hash] = ktab; +} + +/* + * Compute a hash value for a keyword. Uses the ElfHash algorithm, which is + * supposed to have an even distribution (suggested by Charles Campbell). + */ + static int +syn_khash(p) + char_u *p; +{ + long_u hash = 0; + long_u g; + + while (*p != NUL) + { + hash = (hash << 4) + *p++; /* clear low 4 bits of hash, add char */ + g = hash & 0xf0000000L; /* g has high 4 bits of hash only */ + if (g != 0) + hash ^= g >> 24; /* xor g's high 4 bits into hash */ + } + + return (int)(hash & KHASH_MASK); +} + +/* + * Get the start and end of the group name argument. + * Return a pointer to the first argument. + * Return NULL if the end of the command was found instead of further args. + */ + static char_u * +get_group_name(arg, name_end) + char_u *arg; /* start of the argument */ + char_u **name_end; /* pointer to end of the name */ +{ + char_u *rest; + + *name_end = skiptowhite(arg); + rest = skipwhite(*name_end); + + /* + * Check if there are enough arguments. The first argument may be a + * pattern, where '|' is allowed, so only check for NUL. + */ + if (ends_excmd(*arg) || *rest == NUL) + return NULL; + return rest; +} + +/* + * Check for syntax command option arguments. + * This can be called at any place in the list of arguments, and just picks + * out the arguments that are known. Can be called several times in a row to + * collect all options in between other arguments. + * Return a pointer to the next argument (which isn't an option). + * Return NULL for any error; + */ + static char_u * +get_syn_options(arg, flagsp, keyword, sync_idx, cont_list, + cont_in_list, next_list) + char_u *arg; /* next argument */ + int *flagsp; /* flags for contained and transpartent */ + int keyword; /* TRUE for ":syn keyword" */ + int *sync_idx; /* syntax item for "grouphere" argument, NULL + if not allowed */ + short **cont_list; /* group IDs for "contains" argument, NULL if + not allowed */ + short **cont_in_list; /* group IDs for "containedin" argument, NULL + if not allowed */ + short **next_list; /* group IDs for "nextgroup" argument */ +{ + int flags; + char_u *gname_start, *gname; + int syn_id; + int len; + int i; + int fidx; + static struct flag + { + char *name; + int len; + int val; + } flagtab[] = { {"contained", 9, HL_CONTAINED}, + {"oneline", 7, HL_ONELINE}, + {"keepend", 7, HL_KEEPEND}, + {"extend", 6, HL_EXTEND}, + {"excludenl", 9, HL_EXCLUDENL}, + {"transparent", 11, HL_TRANSP}, + {"skipnl", 6, HL_SKIPNL}, + {"skipwhite", 9, HL_SKIPWHITE}, + {"skipempty", 9, HL_SKIPEMPTY}, + {"grouphere", 9, HL_SYNC_HERE}, + {"groupthere", 10, HL_SYNC_THERE}, + {"display", 7, HL_DISPLAY}, + {"fold", 4, HL_FOLD}, + }; +#define MLEN 12 + char lowname[MLEN]; + int llen; + + if (arg == NULL) /* already detected error */ + return NULL; + + flags = *flagsp; + for (;;) + { + /* STRNICMP() is a bit slow, change arg to lowercase first and use + * STRNCMP() */ + for (llen = 0; llen < MLEN; ++llen) + { + if (!isalpha(arg[llen])) + break; + lowname[llen] = TOLOWER_ASC(arg[llen]); + } + + for (fidx = sizeof(flagtab) / sizeof(struct flag); --fidx >= 0; ) + { + len = flagtab[fidx].len; + if (len == llen + && STRNCMP(lowname, flagtab[fidx].name, len) == 0 + && (ends_excmd(arg[len]) || vim_iswhite(arg[len]))) + { + if (keyword + && (flagtab[fidx].val == HL_DISPLAY + || flagtab[fidx].val == HL_FOLD + || flagtab[fidx].val == HL_EXTEND)) + { + /* treat "display", "fold" and "extend" as a keyword */ + fidx = -1; + break; + } + + flags |= flagtab[fidx].val; + arg = skipwhite(arg + len); + + if (flagtab[fidx].val == HL_SYNC_HERE + || flagtab[fidx].val == HL_SYNC_THERE) + { + if (sync_idx == NULL) + { + EMSG(_("E393: group[t]here not accepted here")); + return NULL; + } + gname_start = arg; + arg = skiptowhite(arg); + if (gname_start == arg) + return NULL; + gname = vim_strnsave(gname_start, (int)(arg - gname_start)); + if (gname == NULL) + return NULL; + if (STRCMP(gname, "NONE") == 0) + *sync_idx = NONE_IDX; + else + { + syn_id = syn_name2id(gname); + for (i = curbuf->b_syn_patterns.ga_len; --i >= 0; ) + if (SYN_ITEMS(curbuf)[i].sp_syn.id == syn_id + && SYN_ITEMS(curbuf)[i].sp_type == SPTYPE_START) + { + *sync_idx = i; + break; + } + if (i < 0) + { + EMSG2(_("E394: Didn't find region item for %s"), gname); + vim_free(gname); + return NULL; + } + } + + vim_free(gname); + arg = skipwhite(arg); + } +#ifdef FEAT_FOLDING + else if (flagtab[fidx].val == HL_FOLD + && foldmethodIsSyntax(curwin)) + { + /* Need to update folds later. */ + foldUpdateAll(curwin); + } +#endif + break; + } + } + if (fidx >= 0) + continue; + + if (llen == 8 && STRNCMP(lowname, "contains", 8) == 0 + && (vim_iswhite(arg[8]) || arg[8] == '=')) + { + if (cont_list == NULL) + { + EMSG(_("E395: contains argument not accepted here")); + return NULL; + } + if (get_id_list(&arg, 8, cont_list) == FAIL) + return NULL; + } + else if (llen == 11 && STRNCMP(lowname, "containedin", 11) == 0 + && (vim_iswhite(arg[11]) || arg[11] == '=')) + { + if (cont_in_list == NULL) + { + EMSG(_("E396: containedin argument not accepted here")); + return NULL; + } + if (get_id_list(&arg, 11, cont_in_list) == FAIL) + return NULL; + } + else if (llen == 9 && STRNCMP(lowname, "nextgroup", 9) == 0 + && (vim_iswhite(arg[9]) || arg[9] == '=')) + { + if (get_id_list(&arg, 9, next_list) == FAIL) + return NULL; + } + else + break; + } + + *flagsp = flags; + + return arg; +} + +/* + * Adjustments to syntax item when declared in a ":syn include"'d file. + * Set the contained flag, and if the item is not already contained, add it + * to the specified top-level group, if any. + */ + static void +syn_incl_toplevel(id, flagsp) + int id; + int *flagsp; +{ + if ((*flagsp & HL_CONTAINED) || curbuf->b_syn_topgrp == 0) + return; + *flagsp |= HL_CONTAINED; + if (curbuf->b_syn_topgrp >= SYNID_CLUSTER) + { + /* We have to alloc this, because syn_combine_list() will free it. */ + short *grp_list = (short *)alloc((unsigned)(2 * sizeof(short))); + int tlg_id = curbuf->b_syn_topgrp - SYNID_CLUSTER; + + if (grp_list != NULL) + { + grp_list[0] = id; + grp_list[1] = 0; + syn_combine_list(&SYN_CLSTR(curbuf)[tlg_id].scl_list, &grp_list, + CLUSTER_ADD); + } + } +} + +/* + * Handle ":syntax include [@{group-name}] filename" command. + */ +/* ARGSUSED */ + static void +syn_cmd_include(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + char_u *arg = eap->arg; + int sgl_id = 1; + char_u *group_name_end; + char_u *rest; + char_u *errormsg = NULL; + int prev_toplvl_grp; + int prev_syn_inc_tag; + int source = FALSE; + + eap->nextcmd = find_nextcmd(arg); + if (eap->skip) + return; + + if (arg[0] == '@') + { + ++arg; + rest = get_group_name(arg, &group_name_end); + if (rest == NULL) + { + EMSG((char_u *)_("E397: Filename required")); + return; + } + sgl_id = syn_check_cluster(arg, (int)(group_name_end - arg)); + /* separate_nextcmd() and expand_filename() depend on this */ + eap->arg = rest; + } + + /* + * Everything that's left, up to the next command, should be the + * filename to include. + */ + eap->argt |= (XFILE | NOSPC); + separate_nextcmd(eap); + if (*eap->arg == '<' || *eap->arg == '$' || mch_isFullName(eap->arg)) + { + /* For an absolute path, "$VIM/..." or "<sfile>.." we ":source" the + * file. Need to expand the file name first. In other cases + * ":runtime!" is used. */ + source = TRUE; + if (expand_filename(eap, syn_cmdlinep, &errormsg) == FAIL) + { + if (errormsg != NULL) + EMSG(errormsg); + return; + } + } + + /* + * Save and restore the existing top-level grouplist id and ":syn + * include" tag around the actual inclusion. + */ + prev_syn_inc_tag = current_syn_inc_tag; + current_syn_inc_tag = ++running_syn_inc_tag; + prev_toplvl_grp = curbuf->b_syn_topgrp; + curbuf->b_syn_topgrp = sgl_id; + if (source ? do_source(eap->arg, FALSE, FALSE) == FAIL + : cmd_runtime(eap->arg, TRUE) == FAIL) + EMSG2(_(e_notopen), eap->arg); + curbuf->b_syn_topgrp = prev_toplvl_grp; + current_syn_inc_tag = prev_syn_inc_tag; +} + +/* + * Handle ":syntax keyword {group-name} [{option}] keyword .." command. + */ +/* ARGSUSED */ + static void +syn_cmd_keyword(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + char_u *arg = eap->arg; + char_u *group_name_end; + int syn_id; + char_u *rest; + char_u *keyword_copy; + char_u *p; + char_u *first_arg; + int round; + int flags = 0; + short *next_list = NULL; + short *cont_in_list = NULL; + + rest = get_group_name(arg, &group_name_end); + + if (rest != NULL) + { + syn_id = syn_check_group(arg, (int)(group_name_end - arg)); + + /* allocate a buffer, for removing the backslashes in the keyword */ + keyword_copy = alloc((unsigned)STRLEN(rest) + 1); + if (keyword_copy != NULL) + { + /* + * The options given apply to ALL keywords, so all options must be + * found before keywords can be created. + * round 1: collect the options. + * round 2: create the keywords. + */ + first_arg = rest; + for (round = 1; round <= 2; ++round) + { + /* + * Isolate each keyword and add an entry for it. + */ + for (rest = first_arg; rest != NULL && !ends_excmd(*rest); + rest = skipwhite(rest)) + { + rest = get_syn_options(rest, &flags, TRUE, NULL, + NULL, &cont_in_list, &next_list); + if (rest == NULL || ends_excmd(*rest)) + break; + p = keyword_copy; + while (*rest != 0 && !vim_iswhite(*rest)) + { + if (*rest == '\\' && rest[1] != NUL) + ++rest; + *p++ = *rest++; + } + *p = NUL; + if (round == 2 && !eap->skip) + { + for (p = vim_strchr(keyword_copy, '['); ; ) + { + if (p != NULL) + *p = NUL; + add_keyword(keyword_copy, syn_id, flags, + cont_in_list, next_list); + if (p == NULL || p[1] == NUL || p[1] == ']') + break; +#ifdef FEAT_MBYTE + if (has_mbyte) + { + int l = (*mb_ptr2len_check)(p + 1); + + mch_memmove(p, p + 1, l); + p += l; + } + else +#endif + { + p[0] = p[1]; + ++p; + } + } + } + } + if (round == 1) + syn_incl_toplevel(syn_id, &flags); + } + vim_free(keyword_copy); + } + } + + if (rest != NULL) + eap->nextcmd = check_nextcmd(rest); + else + EMSG2(_(e_invarg2), arg); + + vim_free(cont_in_list); + vim_free(next_list); + redraw_curbuf_later(NOT_VALID); + syn_stack_free_all(curbuf); /* Need to recompute all syntax. */ +} + +/* + * Handle ":syntax match {name} [{options}] {pattern} [{options}]". + * + * Also ":syntax sync match {name} [[grouphere | groupthere] {group-name}] .." + */ + static void +syn_cmd_match(eap, syncing) + exarg_T *eap; + int syncing; /* TRUE for ":syntax sync match .. " */ +{ + char_u *arg = eap->arg; + char_u *group_name_end; + char_u *rest; + synpat_T item; /* the item found in the line */ + int syn_id; + int idx; + int flags = 0; + int sync_idx = 0; + short *cont_list = NULL; + short *cont_in_list = NULL; + short *next_list = NULL; + + /* Isolate the group name, check for validity */ + rest = get_group_name(arg, &group_name_end); + + /* Get options before the pattern */ + rest = get_syn_options(rest, &flags, FALSE, + syncing ? &sync_idx : NULL, &cont_list, &cont_in_list, &next_list); + + /* get the pattern. */ + init_syn_patterns(); + vim_memset(&item, 0, sizeof(item)); + rest = get_syn_pattern(rest, &item); + if (vim_regcomp_had_eol() && !(flags & HL_EXCLUDENL)) + flags |= HL_HAS_EOL; + + /* Get options after the pattern */ + rest = get_syn_options(rest, &flags, FALSE, + syncing ? &sync_idx : NULL, &cont_list, &cont_in_list, &next_list); + + if (rest != NULL) /* all arguments are valid */ + { + /* + * Check for trailing command and illegal trailing arguments. + */ + eap->nextcmd = check_nextcmd(rest); + if (!ends_excmd(*rest) || eap->skip) + rest = NULL; + else if (ga_grow(&curbuf->b_syn_patterns, 1) != FAIL + && (syn_id = syn_check_group(arg, + (int)(group_name_end - arg))) != 0) + { + syn_incl_toplevel(syn_id, &flags); + /* + * Store the pattern in the syn_items list + */ + idx = curbuf->b_syn_patterns.ga_len; + SYN_ITEMS(curbuf)[idx] = item; + SYN_ITEMS(curbuf)[idx].sp_syncing = syncing; + SYN_ITEMS(curbuf)[idx].sp_type = SPTYPE_MATCH; + SYN_ITEMS(curbuf)[idx].sp_syn.id = syn_id; + SYN_ITEMS(curbuf)[idx].sp_syn.inc_tag = current_syn_inc_tag; + SYN_ITEMS(curbuf)[idx].sp_flags = flags; + SYN_ITEMS(curbuf)[idx].sp_sync_idx = sync_idx; + SYN_ITEMS(curbuf)[idx].sp_cont_list = cont_list; + SYN_ITEMS(curbuf)[idx].sp_syn.cont_in_list = cont_in_list; + if (cont_in_list != NULL) + curbuf->b_syn_containedin = TRUE; + SYN_ITEMS(curbuf)[idx].sp_next_list = next_list; + ++curbuf->b_syn_patterns.ga_len; + --curbuf->b_syn_patterns.ga_room; + + /* remember that we found a match for syncing on */ + if (flags & (HL_SYNC_HERE|HL_SYNC_THERE)) + curbuf->b_syn_sync_flags |= SF_MATCH; +#ifdef FEAT_FOLDING + if (flags & HL_FOLD) + ++curbuf->b_syn_folditems; +#endif + + redraw_curbuf_later(NOT_VALID); + syn_stack_free_all(curbuf); /* Need to recompute all syntax. */ + return; /* don't free the progs and patterns now */ + } + } + + /* + * Something failed, free the allocated memory. + */ + vim_free(item.sp_prog); + vim_free(item.sp_pattern); + vim_free(cont_list); + vim_free(cont_in_list); + vim_free(next_list); + + if (rest == NULL) + EMSG2(_(e_invarg2), arg); +} + +/* + * Handle ":syntax region {group-name} [matchgroup={group-name}] + * start {start} .. [skip {skip}] end {end} .. [{options}]". + */ + static void +syn_cmd_region(eap, syncing) + exarg_T *eap; + int syncing; /* TRUE for ":syntax sync region .." */ +{ + char_u *arg = eap->arg; + char_u *group_name_end; + char_u *rest; /* next arg, NULL on error */ + char_u *key_end; + char_u *key = NULL; + char_u *p; + int item; +#define ITEM_START 0 +#define ITEM_SKIP 1 +#define ITEM_END 2 +#define ITEM_MATCHGROUP 3 + struct pat_ptr + { + synpat_T *pp_synp; /* pointer to syn_pattern */ + int pp_matchgroup_id; /* matchgroup ID */ + struct pat_ptr *pp_next; /* pointer to next pat_ptr */ + } *(pat_ptrs[3]); + /* patterns found in the line */ + struct pat_ptr *ppp; + struct pat_ptr *ppp_next; + int pat_count = 0; /* nr of syn_patterns found */ + int syn_id; + int matchgroup_id = 0; + int not_enough = FALSE; /* not enough arguments */ + int illegal = FALSE; /* illegal arguments */ + int success = FALSE; + int idx; + int flags = 0; + short *cont_list = NULL; + short *cont_in_list = NULL; + short *next_list = NULL; + + /* Isolate the group name, check for validity */ + rest = get_group_name(arg, &group_name_end); + + pat_ptrs[0] = NULL; + pat_ptrs[1] = NULL; + pat_ptrs[2] = NULL; + + init_syn_patterns(); + + /* + * get the options, patterns and matchgroup. + */ + while (rest != NULL && !ends_excmd(*rest)) + { + /* Check for option arguments */ + rest = get_syn_options(rest, &flags, FALSE, NULL, + &cont_list, &cont_in_list, &next_list); + if (rest == NULL || ends_excmd(*rest)) + break; + + /* must be a pattern or matchgroup then */ + key_end = rest; + while (*key_end && !vim_iswhite(*key_end) && *key_end != '=') + ++key_end; + vim_free(key); + key = vim_strnsave_up(rest, (int)(key_end - rest)); + if (key == NULL) /* out of memory */ + { + rest = NULL; + break; + } + if (STRCMP(key, "MATCHGROUP") == 0) + item = ITEM_MATCHGROUP; + else if (STRCMP(key, "START") == 0) + item = ITEM_START; + else if (STRCMP(key, "END") == 0) + item = ITEM_END; + else if (STRCMP(key, "SKIP") == 0) + { + if (pat_ptrs[ITEM_SKIP] != NULL) /* one skip pattern allowed */ + { + illegal = TRUE; + break; + } + item = ITEM_SKIP; + } + else + break; + rest = skipwhite(key_end); + if (*rest != '=') + { + rest = NULL; + EMSG2(_("E398: Missing '=': %s"), arg); + break; + } + rest = skipwhite(rest + 1); + if (*rest == NUL) + { + not_enough = TRUE; + break; + } + + if (item == ITEM_MATCHGROUP) + { + p = skiptowhite(rest); + if ((p - rest == 4 && STRNCMP(rest, "NONE", 4) == 0) || eap->skip) + matchgroup_id = 0; + else + { + matchgroup_id = syn_check_group(rest, (int)(p - rest)); + if (matchgroup_id == 0) + { + illegal = TRUE; + break; + } + } + rest = skipwhite(p); + } + else + { + /* + * Allocate room for a syn_pattern, and link it in the list of + * syn_patterns for this item, at the start (because the list is + * used from end to start). + */ + ppp = (struct pat_ptr *)alloc((unsigned)sizeof(struct pat_ptr)); + if (ppp == NULL) + { + rest = NULL; + break; + } + ppp->pp_next = pat_ptrs[item]; + pat_ptrs[item] = ppp; + ppp->pp_synp = (synpat_T *)alloc_clear((unsigned)sizeof(synpat_T)); + if (ppp->pp_synp == NULL) + { + rest = NULL; + break; + } + + /* + * Get the syntax pattern and the following offset(s). + */ + /* Enable the appropriate \z specials. */ + if (item == ITEM_START) + reg_do_extmatch = REX_SET; + else if (item == ITEM_SKIP || item == ITEM_END) + reg_do_extmatch = REX_USE; + rest = get_syn_pattern(rest, ppp->pp_synp); + reg_do_extmatch = 0; + if (item == ITEM_END && vim_regcomp_had_eol() + && !(flags & HL_EXCLUDENL)) + ppp->pp_synp->sp_flags |= HL_HAS_EOL; + ppp->pp_matchgroup_id = matchgroup_id; + ++pat_count; + } + } + vim_free(key); + if (illegal || not_enough) + rest = NULL; + + /* + * Must have a "start" and "end" pattern. + */ + if (rest != NULL && (pat_ptrs[ITEM_START] == NULL || + pat_ptrs[ITEM_END] == NULL)) + { + not_enough = TRUE; + rest = NULL; + } + + if (rest != NULL) + { + /* + * Check for trailing garbage or command. + * If OK, add the item. + */ + eap->nextcmd = check_nextcmd(rest); + if (!ends_excmd(*rest) || eap->skip) + rest = NULL; + else if (ga_grow(&(curbuf->b_syn_patterns), pat_count) != FAIL + && (syn_id = syn_check_group(arg, + (int)(group_name_end - arg))) != 0) + { + syn_incl_toplevel(syn_id, &flags); + /* + * Store the start/skip/end in the syn_items list + */ + idx = curbuf->b_syn_patterns.ga_len; + for (item = ITEM_START; item <= ITEM_END; ++item) + { + for (ppp = pat_ptrs[item]; ppp != NULL; ppp = ppp->pp_next) + { + SYN_ITEMS(curbuf)[idx] = *(ppp->pp_synp); + SYN_ITEMS(curbuf)[idx].sp_syncing = syncing; + SYN_ITEMS(curbuf)[idx].sp_type = + (item == ITEM_START) ? SPTYPE_START : + (item == ITEM_SKIP) ? SPTYPE_SKIP : SPTYPE_END; + SYN_ITEMS(curbuf)[idx].sp_flags |= flags; + SYN_ITEMS(curbuf)[idx].sp_syn.id = syn_id; + SYN_ITEMS(curbuf)[idx].sp_syn.inc_tag = current_syn_inc_tag; + SYN_ITEMS(curbuf)[idx].sp_syn_match_id = + ppp->pp_matchgroup_id; + if (item == ITEM_START) + { + SYN_ITEMS(curbuf)[idx].sp_cont_list = cont_list; + SYN_ITEMS(curbuf)[idx].sp_syn.cont_in_list = + cont_in_list; + if (cont_in_list != NULL) + curbuf->b_syn_containedin = TRUE; + SYN_ITEMS(curbuf)[idx].sp_next_list = next_list; + } + ++curbuf->b_syn_patterns.ga_len; + --curbuf->b_syn_patterns.ga_room; + ++idx; +#ifdef FEAT_FOLDING + if (flags & HL_FOLD) + ++curbuf->b_syn_folditems; +#endif + } + } + + redraw_curbuf_later(NOT_VALID); + syn_stack_free_all(curbuf); /* Need to recompute all syntax. */ + success = TRUE; /* don't free the progs and patterns now */ + } + } + + /* + * Free the allocated memory. + */ + for (item = ITEM_START; item <= ITEM_END; ++item) + for (ppp = pat_ptrs[item]; ppp != NULL; ppp = ppp_next) + { + if (!success) + { + vim_free(ppp->pp_synp->sp_prog); + vim_free(ppp->pp_synp->sp_pattern); + } + vim_free(ppp->pp_synp); + ppp_next = ppp->pp_next; + vim_free(ppp); + } + + if (!success) + { + vim_free(cont_list); + vim_free(cont_in_list); + vim_free(next_list); + if (not_enough) + EMSG2(_("E399: Not enough arguments: syntax region %s"), arg); + else if (illegal || rest == NULL) + EMSG2(_(e_invarg2), arg); + } +} + +/* + * A simple syntax group ID comparison function suitable for use in qsort() + */ + static int +#ifdef __BORLANDC__ +_RTLENTRYF +#endif +syn_compare_stub(v1, v2) + const void *v1; + const void *v2; +{ + const short *s1 = v1; + const short *s2 = v2; + + return (*s1 > *s2 ? 1 : *s1 < *s2 ? -1 : 0); +} + +/* + * Combines lists of syntax clusters. + * *clstr1 and *clstr2 must both be allocated memory; they will be consumed. + */ + static void +syn_combine_list(clstr1, clstr2, list_op) + short **clstr1; + short **clstr2; + int list_op; +{ + int count1 = 0; + int count2 = 0; + short *g1; + short *g2; + short *clstr = NULL; + int count; + int round; + + /* + * Handle degenerate cases. + */ + if (*clstr2 == NULL) + return; + if (*clstr1 == NULL || list_op == CLUSTER_REPLACE) + { + if (list_op == CLUSTER_REPLACE) + vim_free(*clstr1); + if (list_op == CLUSTER_REPLACE || list_op == CLUSTER_ADD) + *clstr1 = *clstr2; + else + vim_free(*clstr2); + return; + } + + for (g1 = *clstr1; *g1; g1++) + ++count1; + for (g2 = *clstr2; *g2; g2++) + ++count2; + + /* + * For speed purposes, sort both lists. + */ + qsort(*clstr1, (size_t)count1, sizeof(short), syn_compare_stub); + qsort(*clstr2, (size_t)count2, sizeof(short), syn_compare_stub); + + /* + * We proceed in two passes; in round 1, we count the elements to place + * in the new list, and in round 2, we allocate and populate the new + * list. For speed, we use a mergesort-like method, adding the smaller + * of the current elements in each list to the new list. + */ + for (round = 1; round <= 2; round++) + { + g1 = *clstr1; + g2 = *clstr2; + count = 0; + + /* + * First, loop through the lists until one of them is empty. + */ + while (*g1 && *g2) + { + /* + * We always want to add from the first list. + */ + if (*g1 < *g2) + { + if (round == 2) + clstr[count] = *g1; + count++; + g1++; + continue; + } + /* + * We only want to add from the second list if we're adding the + * lists. + */ + if (list_op == CLUSTER_ADD) + { + if (round == 2) + clstr[count] = *g2; + count++; + } + if (*g1 == *g2) + g1++; + g2++; + } + + /* + * Now add the leftovers from whichever list didn't get finished + * first. As before, we only want to add from the second list if + * we're adding the lists. + */ + for (; *g1; g1++, count++) + if (round == 2) + clstr[count] = *g1; + if (list_op == CLUSTER_ADD) + for (; *g2; g2++, count++) + if (round == 2) + clstr[count] = *g2; + + if (round == 1) + { + /* + * If the group ended up empty, we don't need to allocate any + * space for it. + */ + if (count == 0) + { + clstr = NULL; + break; + } + clstr = (short *)alloc((unsigned)((count + 1) * sizeof(short))); + if (clstr == NULL) + break; + clstr[count] = 0; + } + } + + /* + * Finally, put the new list in place. + */ + vim_free(*clstr1); + vim_free(*clstr2); + *clstr1 = clstr; +} + +/* + * Lookup a syntax cluster name and return it's ID. + * If it is not found, 0 is returned. + */ + static int +syn_scl_name2id(name) + char_u *name; +{ + int i; + char_u *name_u; + + /* Avoid using stricmp() too much, it's slow on some systems */ + name_u = vim_strsave_up(name); + if (name_u == NULL) + return 0; + for (i = curbuf->b_syn_clusters.ga_len; --i >= 0; ) + if (SYN_CLSTR(curbuf)[i].scl_name_u != NULL + && STRCMP(name_u, SYN_CLSTR(curbuf)[i].scl_name_u) == 0) + break; + vim_free(name_u); + return (i < 0 ? 0 : i + SYNID_CLUSTER); +} + +/* + * Like syn_scl_name2id(), but take a pointer + length argument. + */ + static int +syn_scl_namen2id(linep, len) + char_u *linep; + int len; +{ + char_u *name; + int id = 0; + + name = vim_strnsave(linep, len); + if (name != NULL) + { + id = syn_scl_name2id(name); + vim_free(name); + } + return id; +} + +/* + * Find syntax cluster name in the table and return it's ID. + * The argument is a pointer to the name and the length of the name. + * If it doesn't exist yet, a new entry is created. + * Return 0 for failure. + */ + static int +syn_check_cluster(pp, len) + char_u *pp; + int len; +{ + int id; + char_u *name; + + name = vim_strnsave(pp, len); + if (name == NULL) + return 0; + + id = syn_scl_name2id(name); + if (id == 0) /* doesn't exist yet */ + id = syn_add_cluster(name); + else + vim_free(name); + return id; +} + +/* + * Add new syntax cluster and return it's ID. + * "name" must be an allocated string, it will be consumed. + * Return 0 for failure. + */ + static int +syn_add_cluster(name) + char_u *name; +{ + int len; + + /* + * First call for this growarray: init growing array. + */ + if (curbuf->b_syn_clusters.ga_data == NULL) + { + curbuf->b_syn_clusters.ga_itemsize = sizeof(struct syn_cluster); + curbuf->b_syn_clusters.ga_growsize = 10; + } + + /* + * Make room for at least one other cluster entry. + */ + if (ga_grow(&curbuf->b_syn_clusters, 1) == FAIL) + { + vim_free(name); + return 0; + } + len = curbuf->b_syn_clusters.ga_len; + + vim_memset(&(SYN_CLSTR(curbuf)[len]), 0, sizeof(struct syn_cluster)); + SYN_CLSTR(curbuf)[len].scl_name = name; + SYN_CLSTR(curbuf)[len].scl_name_u = vim_strsave_up(name); + SYN_CLSTR(curbuf)[len].scl_list = NULL; + ++curbuf->b_syn_clusters.ga_len; + --curbuf->b_syn_clusters.ga_room; + + return len + SYNID_CLUSTER; +} + +/* + * Handle ":syntax cluster {cluster-name} [contains={groupname},..] + * [add={groupname},..] [remove={groupname},..]". + */ +/* ARGSUSED */ + static void +syn_cmd_cluster(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + char_u *arg = eap->arg; + char_u *group_name_end; + char_u *rest; + int scl_id; + short *clstr_list; + int got_clstr = FALSE; + int opt_len; + int list_op; + + eap->nextcmd = find_nextcmd(arg); + if (eap->skip) + return; + + rest = get_group_name(arg, &group_name_end); + + if (rest != NULL) + { + scl_id = syn_check_cluster(arg, (int)(group_name_end - arg)) + - SYNID_CLUSTER; + + for (;;) + { + if (STRNICMP(rest, "add", 3) == 0 + && (vim_iswhite(rest[3]) || rest[3] == '=')) + { + opt_len = 3; + list_op = CLUSTER_ADD; + } + else if (STRNICMP(rest, "remove", 6) == 0 + && (vim_iswhite(rest[6]) || rest[6] == '=')) + { + opt_len = 6; + list_op = CLUSTER_SUBTRACT; + } + else if (STRNICMP(rest, "contains", 8) == 0 + && (vim_iswhite(rest[8]) || rest[8] == '=')) + { + opt_len = 8; + list_op = CLUSTER_REPLACE; + } + else + break; + + clstr_list = NULL; + if (get_id_list(&rest, opt_len, &clstr_list) == FAIL) + { + EMSG2(_(e_invarg2), rest); + break; + } + syn_combine_list(&SYN_CLSTR(curbuf)[scl_id].scl_list, + &clstr_list, list_op); + got_clstr = TRUE; + } + + if (got_clstr) + { + redraw_curbuf_later(NOT_VALID); + syn_stack_free_all(curbuf); /* Need to recompute all syntax. */ + } + } + + if (!got_clstr) + EMSG(_("E400: No cluster specified")); + if (rest == NULL || !ends_excmd(*rest)) + EMSG2(_(e_invarg2), arg); +} + +/* + * On first call for current buffer: Init growing array. + */ + static void +init_syn_patterns() +{ + curbuf->b_syn_patterns.ga_itemsize = sizeof(synpat_T); + curbuf->b_syn_patterns.ga_growsize = 10; +} + +/* + * Get one pattern for a ":syntax match" or ":syntax region" command. + * Stores the pattern and program in a synpat_T. + * Returns a pointer to the next argument, or NULL in case of an error. + */ + static char_u * +get_syn_pattern(arg, ci) + char_u *arg; + synpat_T *ci; +{ + char_u *end; + int *p; + int idx; + char_u *cpo_save; + + /* need at least three chars */ + if (arg == NULL || arg[1] == NUL || arg[2] == NUL) + return NULL; + + end = skip_regexp(arg + 1, *arg, TRUE, NULL); + if (*end != *arg) /* end delimiter not found */ + { + EMSG2(_("E401: Pattern delimiter not found: %s"), arg); + return NULL; + } + /* store the pattern and compiled regexp program */ + if ((ci->sp_pattern = vim_strnsave(arg + 1, (int)(end - arg - 1))) == NULL) + return NULL; + + /* Make 'cpoptions' empty, to avoid the 'l' flag */ + cpo_save = p_cpo; + p_cpo = (char_u *)""; + ci->sp_prog = vim_regcomp(ci->sp_pattern, RE_MAGIC); + p_cpo = cpo_save; + + if (ci->sp_prog == NULL) + return NULL; + ci->sp_ic = curbuf->b_syn_ic; + + /* + * Check for a match, highlight or region offset. + */ + ++end; + do + { + for (idx = SPO_COUNT; --idx >= 0; ) + if (STRNCMP(end, spo_name_tab[idx], 3) == 0) + break; + if (idx >= 0) + { + p = &(ci->sp_offsets[idx]); + if (idx != SPO_LC_OFF) + switch (end[3]) + { + case 's': break; + case 'b': break; + case 'e': idx += SPO_COUNT; break; + default: idx = -1; break; + } + if (idx >= 0) + { + ci->sp_off_flags |= (1 << idx); + if (idx == SPO_LC_OFF) /* lc=99 */ + { + end += 3; + *p = getdigits(&end); + + /* "lc=" offset automatically sets "ms=" offset */ + if (!(ci->sp_off_flags & (1 << SPO_MS_OFF))) + { + ci->sp_off_flags |= (1 << SPO_MS_OFF); + ci->sp_offsets[SPO_MS_OFF] = *p; + } + } + else /* yy=x+99 */ + { + end += 4; + if (*end == '+') + { + ++end; + *p = getdigits(&end); /* positive offset */ + } + else if (*end == '-') + { + ++end; + *p = -getdigits(&end); /* negative offset */ + } + } + if (*end != ',') + break; + ++end; + } + } + } while (idx >= 0); + + if (!ends_excmd(*end) && !vim_iswhite(*end)) + { + EMSG2(_("E402: Garbage after pattern: %s"), arg); + return NULL; + } + return skipwhite(end); +} + +/* + * Handle ":syntax sync .." command. + */ +/* ARGSUSED */ + static void +syn_cmd_sync(eap, syncing) + exarg_T *eap; + int syncing; /* not used */ +{ + char_u *arg_start = eap->arg; + char_u *arg_end; + char_u *key = NULL; + char_u *next_arg; + int illegal = FALSE; + int finished = FALSE; + long n; + char_u *cpo_save; + + if (ends_excmd(*arg_start)) + { + syn_cmd_list(eap, TRUE); + return; + } + + while (!ends_excmd(*arg_start)) + { + arg_end = skiptowhite(arg_start); + next_arg = skipwhite(arg_end); + vim_free(key); + key = vim_strnsave_up(arg_start, (int)(arg_end - arg_start)); + if (STRCMP(key, "CCOMMENT") == 0) + { + if (!eap->skip) + curbuf->b_syn_sync_flags |= SF_CCOMMENT; + if (!ends_excmd(*next_arg)) + { + arg_end = skiptowhite(next_arg); + if (!eap->skip) + curbuf->b_syn_sync_id = syn_check_group(next_arg, + (int)(arg_end - next_arg)); + next_arg = skipwhite(arg_end); + } + else if (!eap->skip) + curbuf->b_syn_sync_id = syn_name2id((char_u *)"Comment"); + } + else if ( STRNCMP(key, "LINES", 5) == 0 + || STRNCMP(key, "MINLINES", 8) == 0 + || STRNCMP(key, "MAXLINES", 8) == 0 + || STRNCMP(key, "LINEBREAKS", 10) == 0) + { + if (key[4] == 'S') + arg_end = key + 6; + else if (key[0] == 'L') + arg_end = key + 11; + else + arg_end = key + 9; + if (arg_end[-1] != '=' || !VIM_ISDIGIT(*arg_end)) + { + illegal = TRUE; + break; + } + n = getdigits(&arg_end); + if (!eap->skip) + { + if (key[4] == 'B') + curbuf->b_syn_sync_linebreaks = n; + else if (key[1] == 'A') + curbuf->b_syn_sync_maxlines = n; + else + curbuf->b_syn_sync_minlines = n; + } + } + else if (STRCMP(key, "FROMSTART") == 0) + { + if (!eap->skip) + { + curbuf->b_syn_sync_minlines = MAXLNUM; + curbuf->b_syn_sync_maxlines = 0; + } + } + else if (STRCMP(key, "LINECONT") == 0) + { + if (curbuf->b_syn_linecont_pat != NULL) + { + EMSG(_("E403: syntax sync: line continuations pattern specified twice")); + finished = TRUE; + break; + } + arg_end = skip_regexp(next_arg + 1, *next_arg, TRUE, NULL); + if (*arg_end != *next_arg) /* end delimiter not found */ + { + illegal = TRUE; + break; + } + + if (!eap->skip) + { + /* store the pattern and compiled regexp program */ + if ((curbuf->b_syn_linecont_pat = vim_strnsave(next_arg + 1, + (int)(arg_end - next_arg - 1))) == NULL) + { + finished = TRUE; + break; + } + curbuf->b_syn_linecont_ic = curbuf->b_syn_ic; + + /* Make 'cpoptions' empty, to avoid the 'l' flag */ + cpo_save = p_cpo; + p_cpo = (char_u *)""; + curbuf->b_syn_linecont_prog = + vim_regcomp(curbuf->b_syn_linecont_pat, RE_MAGIC); + p_cpo = cpo_save; + + if (curbuf->b_syn_linecont_prog == NULL) + { + vim_free(curbuf->b_syn_linecont_pat); + curbuf->b_syn_linecont_pat = NULL; + finished = TRUE; + break; + } + } + next_arg = skipwhite(arg_end + 1); + } + else + { + eap->arg = next_arg; + if (STRCMP(key, "MATCH") == 0) + syn_cmd_match(eap, TRUE); + else if (STRCMP(key, "REGION") == 0) + syn_cmd_region(eap, TRUE); + else if (STRCMP(key, "CLEAR") == 0) + syn_cmd_clear(eap, TRUE); + else + illegal = TRUE; + finished = TRUE; + break; + } + arg_start = next_arg; + } + vim_free(key); + if (illegal) + EMSG2(_("E404: Illegal arguments: %s"), arg_start); + else if (!finished) + { + eap->nextcmd = check_nextcmd(arg_start); + redraw_curbuf_later(NOT_VALID); + syn_stack_free_all(curbuf); /* Need to recompute all syntax. */ + } +} + +/* + * Convert a line of highlight group names into a list of group ID numbers. + * "arg" should point to the "contains" or "nextgroup" keyword. + * "arg" is advanced to after the last group name. + * Careful: the argument is modified (NULs added). + * returns FAIL for some error, OK for success. + */ + static int +get_id_list(arg, keylen, list) + char_u **arg; + int keylen; /* length of keyword */ + short **list; /* where to store the resulting list, if not + NULL, the list is silently skipped! */ +{ + char_u *p = NULL; + char_u *end; + int round; + int count; + int total_count = 0; + short *retval = NULL; + char_u *name; + regmatch_T regmatch; + int id; + int i; + int failed = FALSE; + + /* + * We parse the list twice: + * round == 1: count the number of items, allocate the array. + * round == 2: fill the array with the items. + * In round 1 new groups may be added, causing the number of items to + * grow when a regexp is used. In that case round 1 is done once again. + */ + for (round = 1; round <= 2; ++round) + { + /* + * skip "contains" + */ + p = skipwhite(*arg + keylen); + if (*p != '=') + { + EMSG2(_("E405: Missing equal sign: %s"), *arg); + break; + } + p = skipwhite(p + 1); + if (ends_excmd(*p)) + { + EMSG2(_("E406: Empty argument: %s"), *arg); + break; + } + + /* + * parse the arguments after "contains" + */ + count = 0; + while (!ends_excmd(*p)) + { + for (end = p; *end && !vim_iswhite(*end) && *end != ','; ++end) + ; + name = alloc((int)(end - p + 3)); /* leave room for "^$" */ + if (name == NULL) + { + failed = TRUE; + break; + } + STRNCPY(name + 1, p, end - p); + name[end - p + 1] = NUL; + if ( STRCMP(name + 1, "ALLBUT") == 0 + || STRCMP(name + 1, "ALL") == 0 + || STRCMP(name + 1, "TOP") == 0 + || STRCMP(name + 1, "CONTAINED") == 0) + { + if (TOUPPER_ASC(**arg) != 'C') + { + EMSG2(_("E407: %s not allowed here"), name + 1); + failed = TRUE; + vim_free(name); + break; + } + if (count != 0) + { + EMSG2(_("E408: %s must be first in contains list"), name + 1); + failed = TRUE; + vim_free(name); + break; + } + if (name[1] == 'A') + id = SYNID_ALLBUT; + else if (name[1] == 'T') + id = SYNID_TOP; + else + id = SYNID_CONTAINED; + id += current_syn_inc_tag; + } + else if (name[1] == '@') + { + id = syn_check_cluster(name + 2, (int)(end - p - 1)); + } + else + { + /* + * Handle full group name. + */ + if (vim_strpbrk(name + 1, (char_u *)"\\.*^$~[") == NULL) + id = syn_check_group(name + 1, (int)(end - p)); + else + { + /* + * Handle match of regexp with group names. + */ + *name = '^'; + STRCAT(name, "$"); + regmatch.regprog = vim_regcomp(name, RE_MAGIC); + if (regmatch.regprog == NULL) + { + failed = TRUE; + vim_free(name); + break; + } + + regmatch.rm_ic = TRUE; + id = 0; + for (i = highlight_ga.ga_len; --i >= 0; ) + { + if (vim_regexec(®match, HL_TABLE()[i].sg_name, + (colnr_T)0)) + { + if (round == 2) + { + /* Got more items than expected; can happen + * when adding items that match: + * "contains=a.*b,axb". + * Go back to first round */ + if (count >= total_count) + { + vim_free(retval); + round = 1; + } + else + retval[count] = i + 1; + } + ++count; + id = -1; /* remember that we found one */ + } + } + vim_free(regmatch.regprog); + } + } + vim_free(name); + if (id == 0) + { + EMSG2(_("E409: Unknown group name: %s"), p); + failed = TRUE; + break; + } + if (id > 0) + { + if (round == 2) + { + /* Got more items than expected, go back to first round */ + if (count >= total_count) + { + vim_free(retval); + round = 1; + } + else + retval[count] = id; + } + ++count; + } + p = skipwhite(end); + if (*p != ',') + break; + p = skipwhite(p + 1); /* skip comma in between arguments */ + } + if (failed) + break; + if (round == 1) + { + retval = (short *)alloc((unsigned)((count + 1) * sizeof(short))); + if (retval == NULL) + break; + retval[count] = 0; /* zero means end of the list */ + total_count = count; + } + } + + *arg = p; + if (failed || retval == NULL) + { + vim_free(retval); + return FAIL; + } + + if (*list == NULL) + *list = retval; + else + vim_free(retval); /* list already found, don't overwrite it */ + + return OK; +} + +/* + * Make a copy of an ID list. + */ + static short * +copy_id_list(list) + short *list; +{ + int len; + int count; + short *retval; + + if (list == NULL) + return NULL; + + for (count = 0; list[count]; ++count) + ; + len = (count + 1) * sizeof(short); + retval = (short *)alloc((unsigned)len); + if (retval != NULL) + mch_memmove(retval, list, (size_t)len); + + return retval; +} + +/* + * Check if syntax group "ssp" is in the ID list "list" of "cur_si". + * "cur_si" can be NULL if not checking the "containedin" list. + * Used to check if a syntax item is in the "contains" or "nextgroup" list of + * the current item. + * This function is called very often, keep it fast!! + */ + static int +in_id_list(cur_si, list, ssp, contained) + stateitem_T *cur_si; /* current item or NULL */ + short *list; /* id list */ + struct sp_syn *ssp; /* group id and ":syn include" tag of group */ + int contained; /* group id is contained */ +{ + int retval; + short *scl_list; + short item; + short id = ssp->id; + static int depth = 0; + int r; + + /* If spp has a "containedin" list and "cur_si" is in it, return TRUE. */ + if (cur_si != NULL && ssp->cont_in_list != NULL) + { + /* Ignore transparent items without a contains argument. Double check + * that we don't go back past the first one. */ + while ((cur_si->si_flags & HL_TRANS_CONT) + && cur_si > (stateitem_T *)(current_state.ga_data)) + --cur_si; + /* cur_si->si_idx is -1 for keywords, these never contain anything. */ + if (cur_si->si_idx >= 0 && in_id_list(NULL, ssp->cont_in_list, + &(SYN_ITEMS(syn_buf)[cur_si->si_idx].sp_syn), + SYN_ITEMS(syn_buf)[cur_si->si_idx].sp_flags & HL_CONTAINED)) + return TRUE; + } + + if (list == NULL) + return FALSE; + + /* + * If list is ID_LIST_ALL, we are in a transparent item that isn't + * inside anything. Only allow not-contained groups. + */ + if (list == ID_LIST_ALL) + return !contained; + + /* + * If the first item is "ALLBUT", return TRUE if "id" is NOT in the + * contains list. We also require that "id" is at the same ":syn include" + * level as the list. + */ + item = *list; + if (item >= SYNID_ALLBUT && item < SYNID_CLUSTER) + { + if (item < SYNID_TOP) + { + /* ALL or ALLBUT: accept all groups in the same file */ + if (item - SYNID_ALLBUT != ssp->inc_tag) + return FALSE; + } + else if (item < SYNID_CONTAINED) + { + /* TOP: accept all not-contained groups in the same file */ + if (item - SYNID_TOP != ssp->inc_tag || contained) + return FALSE; + } + else + { + /* CONTAINED: accept all contained groups in the same file */ + if (item - SYNID_CONTAINED != ssp->inc_tag || !contained) + return FALSE; + } + item = *++list; + retval = FALSE; + } + else + retval = TRUE; + + /* + * Return "retval" if id is in the contains list. + */ + while (item != 0) + { + if (item == id) + return retval; + if (item >= SYNID_CLUSTER) + { + scl_list = SYN_CLSTR(syn_buf)[item - SYNID_CLUSTER].scl_list; + /* restrict recursiveness to 30 to avoid an endless loop for a + * cluster that includes itself (indirectly) */ + if (scl_list != NULL && depth < 30) + { + ++depth; + r = in_id_list(NULL, scl_list, ssp, contained); + --depth; + if (r) + return retval; + } + } + item = *++list; + } + return !retval; +} + +struct subcommand +{ + char *name; /* subcommand name */ + void (*func)__ARGS((exarg_T *, int)); /* function to call */ +}; + +static struct subcommand subcommands[] = +{ + {"case", syn_cmd_case}, + {"clear", syn_cmd_clear}, + {"cluster", syn_cmd_cluster}, + {"enable", syn_cmd_enable}, + {"include", syn_cmd_include}, + {"keyword", syn_cmd_keyword}, + {"list", syn_cmd_list}, + {"manual", syn_cmd_manual}, + {"match", syn_cmd_match}, + {"on", syn_cmd_on}, + {"off", syn_cmd_off}, + {"region", syn_cmd_region}, + {"reset", syn_cmd_reset}, + {"sync", syn_cmd_sync}, + {"", syn_cmd_list}, + {NULL, NULL} +}; + +/* + * ":syntax". + * This searches the subcommands[] table for the subcommand name, and calls a + * syntax_subcommand() function to do the rest. + */ + void +ex_syntax(eap) + exarg_T *eap; +{ + char_u *arg = eap->arg; + char_u *subcmd_end; + char_u *subcmd_name; + int i; + + syn_cmdlinep = eap->cmdlinep; + + /* isolate subcommand name */ + for (subcmd_end = arg; ASCII_ISALPHA(*subcmd_end); ++subcmd_end) + ; + subcmd_name = vim_strnsave(arg, (int)(subcmd_end - arg)); + if (subcmd_name != NULL) + { + if (eap->skip) /* skip error messages for all subcommands */ + ++emsg_skip; + for (i = 0; ; ++i) + { + if (subcommands[i].name == NULL) + { + EMSG2(_("E410: Invalid :syntax subcommand: %s"), subcmd_name); + break; + } + if (STRCMP(subcmd_name, (char_u *)subcommands[i].name) == 0) + { + eap->arg = skipwhite(subcmd_end); + (subcommands[i].func)(eap, FALSE); + break; + } + } + vim_free(subcmd_name); + if (eap->skip) + --emsg_skip; + } +} + + int +syntax_present(buf) + buf_T *buf; +{ + return (buf->b_syn_patterns.ga_len != 0 + || buf->b_syn_clusters.ga_len != 0 + || curbuf->b_keywtab != NULL + || curbuf->b_keywtab_ic != NULL); +} + +#if defined(FEAT_CMDL_COMPL) || defined(PROTO) + +static enum +{ + EXP_SUBCMD, /* expand ":syn" sub-commands */ + EXP_CASE /* expand ":syn case" arguments */ +} expand_what; + + +/* + * Handle command line completion for :syntax command. + */ + void +set_context_in_syntax_cmd(xp, arg) + expand_T *xp; + char_u *arg; +{ + char_u *p; + + /* Default: expand subcommands */ + xp->xp_context = EXPAND_SYNTAX; + expand_what = EXP_SUBCMD; + xp->xp_pattern = arg; + include_link = FALSE; + include_default = FALSE; + + /* (part of) subcommand already typed */ + if (*arg != NUL) + { + p = skiptowhite(arg); + if (*p != NUL) /* past first word */ + { + xp->xp_pattern = skipwhite(p); + if (*skiptowhite(xp->xp_pattern) != NUL) + xp->xp_context = EXPAND_NOTHING; + else if (STRNICMP(arg, "case", p - arg) == 0) + expand_what = EXP_CASE; + else if ( STRNICMP(arg, "keyword", p - arg) == 0 + || STRNICMP(arg, "region", p - arg) == 0 + || STRNICMP(arg, "match", p - arg) == 0 + || STRNICMP(arg, "list", p - arg) == 0) + xp->xp_context = EXPAND_HIGHLIGHT; + else + xp->xp_context = EXPAND_NOTHING; + } + } +} + +static char *(case_args[]) = {"match", "ignore", NULL}; + +/* + * Function given to ExpandGeneric() to obtain the list syntax names for + * expansion. + */ +/*ARGSUSED*/ + char_u * +get_syntax_name(xp, idx) + expand_T *xp; + int idx; +{ + if (expand_what == EXP_SUBCMD) + return (char_u *)subcommands[idx].name; + return (char_u *)case_args[idx]; +} + +#endif /* FEAT_CMDL_COMPL */ + +#if defined(FEAT_EVAL) || defined(FEAT_PRINTER) || defined(PROTO) +/* + * Function called for expression evaluation: get syntax ID at file position. + */ + int +syn_get_id(lnum, col, trans) + long lnum; + long col; + int trans; /* remove transparancy */ +{ + /* When the position is not after the current position and in the same + * line of the same buffer, need to restart parsing. */ + if (curwin->w_buffer != syn_buf + || lnum != current_lnum + || col < (long)current_col) + syntax_start(curwin, lnum); + + (void)get_syntax_attr((colnr_T)col); + + return (trans ? current_trans_id : current_id); +} +#endif + +#if defined(FEAT_FOLDING) || defined(PROTO) +/* + * Function called to get folding level for line "lnum" in window "wp". + */ + int +syn_get_foldlevel(wp, lnum) + win_T *wp; + long lnum; +{ + int level = 0; + int i; + + /* Return quickly when there are no fold items at all. */ + if (wp->w_buffer->b_syn_folditems != 0) + { + syntax_start(wp, lnum); + + for (i = 0; i < current_state.ga_len; ++i) + if (CUR_STATE(i).si_flags & HL_FOLD) + ++level; + } + if (level > wp->w_p_fdn) + level = wp->w_p_fdn; + return level; +} +#endif + +#endif /* FEAT_SYN_HL */ + + +/************************************** + * Highlighting stuff * + **************************************/ + +/* + * The default highlight groups. These are compiled-in for fast startup and + * they still work when the runtime files can't be found. + * When making changes here, also change runtime/colors/default.vim! + */ +static char *(highlight_init_both[]) = + { +#ifdef FEAT_GUI + "Cursor guibg=fg guifg=bg", + "lCursor guibg=fg guifg=bg", /* should be different, but what? */ +#endif + "ErrorMsg term=standout ctermbg=DarkRed ctermfg=White guibg=Red guifg=White", + "IncSearch term=reverse cterm=reverse gui=reverse", + "ModeMsg term=bold cterm=bold gui=bold", + "NonText term=bold ctermfg=Blue gui=bold guifg=Blue", + "StatusLine term=reverse,bold cterm=reverse,bold gui=reverse,bold", + "StatusLineNC term=reverse cterm=reverse gui=reverse", + "VertSplit term=reverse cterm=reverse gui=reverse", + "Visual term=reverse cterm=reverse gui=reverse guifg=Grey guibg=fg", + "VisualNOS term=underline,bold cterm=underline,bold gui=underline,bold", + "DiffText term=reverse cterm=bold ctermbg=Red gui=bold guibg=Red", + NULL + }; + +static char *(highlight_init_light[]) = + { + "Directory term=bold ctermfg=DarkBlue guifg=Blue", + "LineNr term=underline ctermfg=Brown guifg=Brown", + "MoreMsg term=bold ctermfg=DarkGreen gui=bold guifg=SeaGreen", + "Normal gui=NONE", + "Question term=standout ctermfg=DarkGreen gui=bold guifg=SeaGreen", + "Search term=reverse ctermbg=Yellow ctermfg=NONE guibg=Yellow guifg=NONE", + "SpecialKey term=bold ctermfg=DarkBlue guifg=Blue", + "Title term=bold ctermfg=DarkMagenta gui=bold guifg=Magenta", + "WarningMsg term=standout ctermfg=DarkRed guifg=Red", + "WildMenu term=standout ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black", + "Folded term=standout ctermbg=Grey ctermfg=DarkBlue guibg=LightGrey guifg=DarkBlue", + "FoldColumn term=standout ctermbg=Grey ctermfg=DarkBlue guibg=Grey guifg=DarkBlue", + "SignColumn term=standout ctermbg=Grey ctermfg=DarkBlue guibg=Grey guifg=DarkBlue", + "DiffAdd term=bold ctermbg=LightBlue guibg=LightBlue", + "DiffChange term=bold ctermbg=LightMagenta guibg=LightMagenta", + "DiffDelete term=bold ctermfg=Blue ctermbg=LightCyan gui=bold guifg=Blue guibg=LightCyan", + NULL + }; + +static char *(highlight_init_dark[]) = + { + "Directory term=bold ctermfg=LightCyan guifg=Cyan", + "LineNr term=underline ctermfg=Yellow guifg=Yellow", + "MoreMsg term=bold ctermfg=LightGreen gui=bold guifg=SeaGreen", + "Normal gui=NONE", + "Question term=standout ctermfg=LightGreen gui=bold guifg=Green", + "Search term=reverse ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black", + "SpecialKey term=bold ctermfg=LightBlue guifg=Cyan", + "Title term=bold ctermfg=LightMagenta gui=bold guifg=Magenta", + "WarningMsg term=standout ctermfg=LightRed guifg=Red", + "WildMenu term=standout ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black", + "Folded term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=DarkGrey guifg=Cyan", + "FoldColumn term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=Grey guifg=Cyan", + "SignColumn term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=Grey guifg=Cyan", + "DiffAdd term=bold ctermbg=DarkBlue guibg=DarkBlue", + "DiffChange term=bold ctermbg=DarkMagenta guibg=DarkMagenta", + "DiffDelete term=bold ctermfg=Blue ctermbg=DarkCyan gui=bold guifg=Blue guibg=DarkCyan", + NULL + }; + + void +init_highlight(both, reset) + int both; /* include groups where 'bg' doesn't matter */ + int reset; /* clear group first */ +{ + int i; + char **pp; + static int had_both = FALSE; +#ifdef FEAT_EVAL + char_u *p; + + /* + * Try finding the color scheme file. Used when a color file was loaded + * and 'background' or 't_Co' is changed. + */ + p = get_var_value((char_u *)"g:colors_name"); + if (p != NULL && load_colors(p) == OK) + return; +#endif + + /* + * Didn't use a color file, use the compiled-in colors. + */ + if (both) + { + had_both = TRUE; + pp = highlight_init_both; + for (i = 0; pp[i] != NULL; ++i) + do_highlight((char_u *)pp[i], reset, TRUE); + } + else if (!had_both) + /* Don't do anything before the call with both == TRUE from main(). + * Not everything has been setup then, and that call will overrule + * everything anyway. */ + return; + + if (*p_bg == 'l') + pp = highlight_init_light; + else + pp = highlight_init_dark; + for (i = 0; pp[i] != NULL; ++i) + do_highlight((char_u *)pp[i], reset, TRUE); + +#ifdef FEAT_SYN_HL + /* + * If syntax highlighting is enabled load the highlighting for it. + */ + if (get_var_value((char_u *)"g:syntax_on") != NULL) + (void)cmd_runtime((char_u *)"syntax/syncolor.vim", TRUE); +#endif +} + +/* + * Load color file "p". + * Return OK for success, FAIL for failure. + */ + int +load_colors(p) + char_u *p; +{ + char_u *buf; + int retval = FAIL; + static int recursive = FALSE; + + /* When being called recursively, this is probably because setting + * 'background' caused the highlighting to be reloaded. This means it is + * working, thus we should return OK. */ + if (recursive) + return OK; + + recursive = TRUE; + buf = alloc((unsigned)(STRLEN(p) + 12)); + if (buf != NULL) + { + sprintf((char *)buf, "colors/%s.vim", p); + retval = cmd_runtime(buf, FALSE); + vim_free(buf); + } + recursive = FALSE; + + return retval; +} + +/* + * Handle the ":highlight .." command. + * When using ":hi clear" this is called recursively for each group with + * "forceit" and "init" both TRUE. + */ + void +do_highlight(line, forceit, init) + char_u *line; + int forceit; + int init; /* TRUE when called for initializing */ +{ + char_u *name_end; + char_u *p; + char_u *linep; + char_u *key_start; + char_u *arg_start; + char_u *key = NULL, *arg = NULL; + long i; + int off; + int len; + int attr; + int id; + int idx; + int dodefault = FALSE; + int doclear = FALSE; + int dolink = FALSE; + int error = FALSE; + int color; + int is_normal_group = FALSE; /* "Normal" group */ +#ifdef FEAT_GUI_X11 + int is_menu_group = FALSE; /* "Menu" group */ + int is_scrollbar_group = FALSE; /* "Scrollbar" group */ + int is_tooltip_group = FALSE; /* "Tooltip" group */ + int do_colors = FALSE; /* need to update colors? */ +#else +# define is_menu_group 0 +# define is_tooltip_group 0 +#endif + + /* + * If no argument, list current highlighting. + */ + if (ends_excmd(*line)) + { + for (i = 1; i <= highlight_ga.ga_len && !got_int; ++i) + /* TODO: only call when the group has attributes set */ + highlight_list_one((int)i); + return; + } + + /* + * Isolate the name. + */ + name_end = skiptowhite(line); + linep = skipwhite(name_end); + + /* + * Check for "default" argument. + */ + if (STRNCMP(line, "default", name_end - line) == 0) + { + dodefault = TRUE; + line = linep; + name_end = skiptowhite(line); + linep = skipwhite(name_end); + } + + /* + * Check for "clear" or "link" argument. + */ + if (STRNCMP(line, "clear", name_end - line) == 0) + doclear = TRUE; + if (STRNCMP(line, "link", name_end - line) == 0) + dolink = TRUE; + + /* + * ":highlight {group-name}": list highlighting for one group. + */ + if (!doclear && !dolink && ends_excmd(*linep)) + { + id = syn_namen2id(line, (int)(name_end - line)); + if (id == 0) + EMSG2(_("E411: highlight group not found: %s"), line); + else + highlight_list_one(id); + return; + } + + /* + * Handle ":highlight link {from} {to}" command. + */ + if (dolink) + { + char_u *from_start = linep; + char_u *from_end; + char_u *to_start; + char_u *to_end; + int from_id; + int to_id; + + from_end = skiptowhite(from_start); + to_start = skipwhite(from_end); + to_end = skiptowhite(to_start); + + if (ends_excmd(*from_start) || ends_excmd(*to_start)) + { + EMSG2(_("E412: Not enough arguments: \":highlight link %s\""), + from_start); + return; + } + + if (!ends_excmd(*skipwhite(to_end))) + { + EMSG2(_("E413: Too many arguments: \":highlight link %s\""), from_start); + return; + } + + from_id = syn_check_group(from_start, (int)(from_end - from_start)); + if (STRNCMP(to_start, "NONE", 4) == 0) + to_id = 0; + else + to_id = syn_check_group(to_start, (int)(to_end - to_start)); + + if (from_id > 0 && (!init || HL_TABLE()[from_id - 1].sg_set == 0)) + { + /* + * Don't allow a link when there already is some highlighting + * for the group, unless '!' is used + */ + if (to_id > 0 && !forceit && !init + && hl_has_settings(from_id - 1, dodefault)) + { + if (sourcing_name == NULL && !dodefault) + EMSG(_("E414: group has settings, highlight link ignored")); + } + else + { + if (!init) + HL_TABLE()[from_id - 1].sg_set |= SG_LINK; + HL_TABLE()[from_id - 1].sg_link = to_id; + redraw_all_later(NOT_VALID); + } + } + + /* Only call highlight_changed() once, after sourcing a syntax file */ + need_highlight_changed = TRUE; + + return; + } + + if (doclear) + { + /* + * ":highlight clear [group]" command. + */ + line = linep; + if (ends_excmd(*line)) + { +#ifdef FEAT_GUI + /* First, we do not destroy the old values, but allocate the new + * ones and update the display. THEN we destroy the old values. + * If we destroy the old values first, then the old values + * (such as GuiFont's or GuiFontset's) will still be displayed but + * invalid because they were free'd. + */ + if (gui.in_use) + { +# ifdef FEAT_BEVAL_TIP + gui_init_tooltip_font(); +# endif +# if defined(FEAT_MENU) && (defined(FEAT_GUI_ATHENA) || defined(FEAT_GUI_MOTIF)) + gui_init_menu_font(); +# endif + } +# if defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_X11) + gui_mch_def_colors(); +# endif +# ifdef FEAT_GUI_X11 +# ifdef FEAT_MENU + + /* This only needs to be done when there is no Menu highlight + * group defined by default, which IS currently the case. + */ + gui_mch_new_menu_colors(); +# endif + if (gui.in_use) + { + gui_new_scrollbar_colors(); +# ifdef FEAT_BEVAL + gui_mch_new_tooltip_colors(); +# endif +# ifdef FEAT_MENU + gui_mch_new_menu_font(); +# endif + } +# endif + + /* Ok, we're done allocating the new default graphics items. + * The screen should already be refreshed at this point. + * It is now Ok to clear out the old data. + */ +#endif +#ifdef FEAT_EVAL + do_unlet((char_u *)"colors_name"); +#endif + restore_cterm_colors(); + + /* + * Clear all default highlight groups and load the defaults. + */ + for (idx = 0; idx < highlight_ga.ga_len; ++idx) + highlight_clear(idx); + init_highlight(TRUE, TRUE); +#ifdef FEAT_GUI + if (gui.in_use) + highlight_gui_started(); +#endif + highlight_changed(); + redraw_later_clear(); + return; + } + name_end = skiptowhite(line); + linep = skipwhite(name_end); + } + + /* + * Find the group name in the table. If it does not exist yet, add it. + */ + id = syn_check_group(line, (int)(name_end - line)); + if (id == 0) /* failed (out of memory) */ + return; + idx = id - 1; /* index is ID minus one */ + + /* Return if "default" was used and the group already has settings. */ + if (dodefault && hl_has_settings(idx, TRUE)) + return; + + if (STRCMP(HL_TABLE()[idx].sg_name_u, "NORMAL") == 0) + is_normal_group = TRUE; +#ifdef FEAT_GUI_X11 + else if (STRCMP(HL_TABLE()[idx].sg_name_u, "MENU") == 0) + is_menu_group = TRUE; + else if (STRCMP(HL_TABLE()[idx].sg_name_u, "SCROLLBAR") == 0) + is_scrollbar_group = TRUE; + else if (STRCMP(HL_TABLE()[idx].sg_name_u, "TOOLTIP") == 0) + is_tooltip_group = TRUE; +#endif + + /* Clear the highlighting for ":hi clear {group}" and ":hi clear". */ + if (doclear || (forceit && init)) + { + highlight_clear(idx); + if (!doclear) + HL_TABLE()[idx].sg_set = 0; + } + + if (!doclear) + while (!ends_excmd(*linep)) + { + key_start = linep; + if (*linep == '=') + { + EMSG2(_("E415: unexpected equal sign: %s"), key_start); + error = TRUE; + break; + } + + /* + * Isolate the key ("term", "ctermfg", "ctermbg", "font", "guifg" or + * "guibg"). + */ + while (*linep && !vim_iswhite(*linep) && *linep != '=') + ++linep; + vim_free(key); + key = vim_strnsave_up(key_start, (int)(linep - key_start)); + if (key == NULL) + { + error = TRUE; + break; + } + linep = skipwhite(linep); + + if (STRCMP(key, "NONE") == 0) + { + if (!init || HL_TABLE()[idx].sg_set == 0) + { + if (!init) + HL_TABLE()[idx].sg_set |= SG_TERM+SG_CTERM+SG_GUI; + highlight_clear(idx); + } + continue; + } + + /* + * Check for the equal sign. + */ + if (*linep != '=') + { + EMSG2(_("E416: missing equal sign: %s"), key_start); + error = TRUE; + break; + } + ++linep; + + /* + * Isolate the argument. + */ + linep = skipwhite(linep); + if (*linep == '\'') /* guifg='color name' */ + { + arg_start = ++linep; + linep = vim_strchr(linep, '\''); + if (linep == NULL) + { + EMSG2(_(e_invarg2), key_start); + error = TRUE; + break; + } + } + else + { + arg_start = linep; + linep = skiptowhite(linep); + } + if (linep == arg_start) + { + EMSG2(_("E417: missing argument: %s"), key_start); + error = TRUE; + break; + } + vim_free(arg); + arg = vim_strnsave(arg_start, (int)(linep - arg_start)); + if (arg == NULL) + { + error = TRUE; + break; + } + if (*linep == '\'') + ++linep; + + /* + * Store the argument. + */ + if ( STRCMP(key, "TERM") == 0 + || STRCMP(key, "CTERM") == 0 + || STRCMP(key, "GUI") == 0) + { + attr = 0; + off = 0; + while (arg[off] != NUL) + { + for (i = sizeof(hl_attr_table) / sizeof(int); --i >= 0; ) + { + len = (int)STRLEN(hl_name_table[i]); + if (STRNICMP(arg + off, hl_name_table[i], len) == 0) + { + attr |= hl_attr_table[i]; + off += len; + break; + } + } + if (i < 0) + { + EMSG2(_("E418: Illegal value: %s"), arg); + error = TRUE; + break; + } + if (arg[off] == ',') /* another one follows */ + ++off; + } + if (error) + break; + if (*key == 'T') + { + if (!init || !(HL_TABLE()[idx].sg_set & SG_TERM)) + { + if (!init) + HL_TABLE()[idx].sg_set |= SG_TERM; + HL_TABLE()[idx].sg_term = attr; + } + } + else if (*key == 'C') + { + if (!init || !(HL_TABLE()[idx].sg_set & SG_CTERM)) + { + if (!init) + HL_TABLE()[idx].sg_set |= SG_CTERM; + HL_TABLE()[idx].sg_cterm = attr; + HL_TABLE()[idx].sg_cterm_bold = FALSE; + } + } +#ifdef FEAT_GUI + else + { + if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI)) + { + if (!init) + HL_TABLE()[idx].sg_set |= SG_GUI; + HL_TABLE()[idx].sg_gui = attr; + } + } +#endif + } + else if (STRCMP(key, "FONT") == 0) + { + /* in non-GUI fonts are simply ignored */ +#ifdef FEAT_GUI + if (!gui.shell_created) + { + /* GUI not started yet, always accept the name. */ + vim_free(HL_TABLE()[idx].sg_font_name); + HL_TABLE()[idx].sg_font_name = vim_strsave(arg); + } + else + { + GuiFont temp_sg_font = HL_TABLE()[idx].sg_font; +# ifdef FEAT_XFONTSET + GuiFontset temp_sg_fontset = HL_TABLE()[idx].sg_fontset; +# endif + /* First, save the current font/fontset. + * Then try to allocate the font/fontset. + * If the allocation fails, HL_TABLE()[idx].sg_font OR + * sg_fontset will be set to NOFONT or NOFONTSET respectively. + */ + + HL_TABLE()[idx].sg_font = NOFONT; +# ifdef FEAT_XFONTSET + HL_TABLE()[idx].sg_fontset = NOFONTSET; +# endif + hl_do_font(idx, arg, is_normal_group, is_menu_group, + is_tooltip_group); + +# ifdef FEAT_XFONTSET + if (HL_TABLE()[idx].sg_fontset != NOFONTSET) + { + /* New fontset was accepted. Free the old one, if there was + * one. + */ + gui_mch_free_fontset(temp_sg_fontset); + vim_free(HL_TABLE()[idx].sg_font_name); + HL_TABLE()[idx].sg_font_name = vim_strsave(arg); + } + else + HL_TABLE()[idx].sg_fontset = temp_sg_fontset; +# endif + if (HL_TABLE()[idx].sg_font != NOFONT) + { + /* New font was accepted. Free the old one, if there was + * one. + */ + gui_mch_free_font(temp_sg_font); + vim_free(HL_TABLE()[idx].sg_font_name); + HL_TABLE()[idx].sg_font_name = vim_strsave(arg); + } + else + HL_TABLE()[idx].sg_font = temp_sg_font; + } +#endif + } + else if (STRCMP(key, "CTERMFG") == 0 || STRCMP(key, "CTERMBG") == 0) + { + if (!init || !(HL_TABLE()[idx].sg_set & SG_CTERM)) + { + if (!init) + HL_TABLE()[idx].sg_set |= SG_CTERM; + + /* When setting the foreground color, and previously the "bold" + * flag was set for a light color, reset it now */ + if (key[5] == 'F' && HL_TABLE()[idx].sg_cterm_bold) + { + HL_TABLE()[idx].sg_cterm &= ~HL_BOLD; + HL_TABLE()[idx].sg_cterm_bold = FALSE; + } + + if (VIM_ISDIGIT(*arg)) + color = atoi((char *)arg); + else if (STRICMP(arg, "fg") == 0) + { + if (cterm_normal_fg_color) + color = cterm_normal_fg_color - 1; + else + { + EMSG(_("E419: FG color unknown")); + error = TRUE; + break; + } + } + else if (STRICMP(arg, "bg") == 0) + { + if (cterm_normal_bg_color > 0) + color = cterm_normal_bg_color - 1; + else + { + EMSG(_("E420: BG color unknown")); + error = TRUE; + break; + } + } + else + { + static char *(color_names[28]) = { + "Black", "DarkBlue", "DarkGreen", "DarkCyan", + "DarkRed", "DarkMagenta", "Brown", "DarkYellow", + "Gray", "Grey", + "LightGray", "LightGrey", "DarkGray", "DarkGrey", + "Blue", "LightBlue", "Green", "LightGreen", + "Cyan", "LightCyan", "Red", "LightRed", "Magenta", + "LightMagenta", "Yellow", "LightYellow", "White", "NONE"}; + static int color_numbers_16[28] = {0, 1, 2, 3, + 4, 5, 6, 6, + 7, 7, + 7, 7, 8, 8, + 9, 9, 10, 10, + 11, 11, 12, 12, 13, + 13, 14, 14, 15, -1}; + /* for xterm with 88 colors... */ + static int color_numbers_88[28] = {0, 4, 2, 6, + 1, 5, 32, 72, + 84, 84, + 7, 7, 82, 82, + 12, 43, 10, 61, + 14, 63, 9, 74, 13, + 75, 11, 78, 15, -1}; + /* for xterm with 256 colors... */ + static int color_numbers_256[28] = {0, 4, 2, 6, + 1, 5, 130, 130, + 248, 248, + 7, 7, 242, 242, + 12, 81, 10, 121, + 14, 159, 9, 224, 13, + 225, 11, 229, 15, -1}; + /* for terminals with less than 16 colors... */ + static int color_numbers_8[28] = {0, 4, 2, 6, + 1, 5, 3, 3, + 7, 7, + 7, 7, 0+8, 0+8, + 4+8, 4+8, 2+8, 2+8, + 6+8, 6+8, 1+8, 1+8, 5+8, + 5+8, 3+8, 3+8, 7+8, -1}; +#if defined(__QNXNTO__) + static int *color_numbers_8_qansi = color_numbers_8; + /* On qnx, the 8 & 16 color arrays are the same */ + if (STRNCMP(T_NAME, "qansi", 5) == 0) + color_numbers_8_qansi = color_numbers_16; +#endif + + /* reduce calls to STRICMP a bit, it can be slow */ + off = TOUPPER_ASC(*arg); + for (i = (sizeof(color_names) / sizeof(char *)); --i >= 0; ) + if (off == color_names[i][0] + && STRICMP(arg + 1, color_names[i] + 1) == 0) + break; + if (i < 0) + { + EMSG2(_("E421: Color name or number not recognized: %s"), key_start); + error = TRUE; + break; + } + + /* Use the _16 table to check if its a valid color name. */ + color = color_numbers_16[i]; + if (color >= 0) + { + if (t_colors == 8) + { + /* t_Co is 8: use the 8 colors table */ +#if defined(__QNXNTO__) + color = color_numbers_8_qansi[i]; +#else + color = color_numbers_8[i]; +#endif + if (key[5] == 'F') + { + /* set/reset bold attribute to get light foreground + * colors (on some terminals, e.g. "linux") */ + if (color & 8) + { + HL_TABLE()[idx].sg_cterm |= HL_BOLD; + HL_TABLE()[idx].sg_cterm_bold = TRUE; + } + else + HL_TABLE()[idx].sg_cterm &= ~HL_BOLD; + } + color &= 7; /* truncate to 8 colors */ + } + else if (t_colors == 16 || t_colors == 88 + || t_colors == 256) + { + /* + * Guess: if the termcap entry ends in 'm', it is + * probably an xterm-like terminal. Use the changed + * order for colors. + */ + if (*T_CAF != NUL) + p = T_CAF; + else + p = T_CSF; + if (*p != NUL && *(p + STRLEN(p) - 1) == 'm') + switch (t_colors) + { + case 16: + color = color_numbers_8[i]; + break; + case 88: + color = color_numbers_88[i]; + break; + case 256: + color = color_numbers_256[i]; + break; + } + } + } + } + /* Add one to the argument, to avoid zero */ + if (key[5] == 'F') + { + HL_TABLE()[idx].sg_cterm_fg = color + 1; + if (is_normal_group) + { + cterm_normal_fg_color = color + 1; + cterm_normal_fg_bold = (HL_TABLE()[idx].sg_cterm & HL_BOLD); +#ifdef FEAT_GUI + /* Don't do this if the GUI is used. */ + if (!gui.in_use && !gui.starting) +#endif + { + must_redraw = CLEAR; + if (termcap_active) + term_fg_color(color); + } + } + } + else + { + HL_TABLE()[idx].sg_cterm_bg = color + 1; + if (is_normal_group) + { + cterm_normal_bg_color = color + 1; +#ifdef FEAT_GUI + /* Don't mess with 'background' if the GUI is used. */ + if (!gui.in_use && !gui.starting) +#endif + { + must_redraw = CLEAR; + if (termcap_active) + term_bg_color(color); + if (t_colors < 16) + i = (color == 0 || color == 4); + else + i = (color < 7 || color == 8); + /* Set the 'background' option if the value is wrong. */ + if (i != (*p_bg == 'd')) + set_option_value((char_u *)"bg", 0L, + i ? (char_u *)"dark" : (char_u *)"light", 0); + } + } + } + } + } + else if (STRCMP(key, "GUIFG") == 0) + { +#ifdef FEAT_GUI /* in non-GUI guifg colors are simply ignored */ + if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI)) + { + if (!init) + HL_TABLE()[idx].sg_set |= SG_GUI; + + i = color_name2handle(arg); + if (i != INVALCOLOR || STRCMP(arg, "NONE") == 0 || !gui.in_use) + { + HL_TABLE()[idx].sg_gui_fg = i; + vim_free(HL_TABLE()[idx].sg_gui_fg_name); + if (STRCMP(arg, "NONE")) + HL_TABLE()[idx].sg_gui_fg_name = vim_strsave(arg); + else + HL_TABLE()[idx].sg_gui_fg_name = NULL; +# ifdef FEAT_GUI_X11 + if (is_menu_group) + gui.menu_fg_pixel = i; + if (is_scrollbar_group) + gui.scroll_fg_pixel = i; +# ifdef FEAT_BEVAL + if (is_tooltip_group) + gui.tooltip_fg_pixel = i; +# endif + do_colors = TRUE; +# endif + } + } +#endif + } + else if (STRCMP(key, "GUIBG") == 0) + { +#ifdef FEAT_GUI /* in non-GUI guibg colors are simply ignored */ + if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI)) + { + if (!init) + HL_TABLE()[idx].sg_set |= SG_GUI; + + i = color_name2handle(arg); + if (i != INVALCOLOR || STRCMP(arg, "NONE") == 0 || !gui.in_use) + { + HL_TABLE()[idx].sg_gui_bg = i; + vim_free(HL_TABLE()[idx].sg_gui_bg_name); + if (STRCMP(arg, "NONE")) + HL_TABLE()[idx].sg_gui_bg_name = vim_strsave(arg); + else + HL_TABLE()[idx].sg_gui_bg_name = NULL; +# ifdef FEAT_GUI_X11 + if (is_menu_group) + gui.menu_bg_pixel = i; + if (is_scrollbar_group) + gui.scroll_bg_pixel = i; +# ifdef FEAT_BEVAL + if (is_tooltip_group) + gui.tooltip_bg_pixel = i; +# endif + do_colors = TRUE; +# endif + } + } +#endif + } + else if (STRCMP(key, "START") == 0 || STRCMP(key, "STOP") == 0) + { + char_u buf[100]; + char_u *tname; + + if (!init) + HL_TABLE()[idx].sg_set |= SG_TERM; + + /* + * The "start" and "stop" arguments can be a literal escape + * sequence, or a comma seperated list of terminal codes. + */ + if (STRNCMP(arg, "t_", 2) == 0) + { + off = 0; + buf[0] = 0; + while (arg[off] != NUL) + { + /* Isolate one termcap name */ + for (len = 0; arg[off + len] && + arg[off + len] != ','; ++len) + ; + tname = vim_strnsave(arg + off, len); + if (tname == NULL) /* out of memory */ + { + error = TRUE; + break; + } + /* lookup the escape sequence for the item */ + p = get_term_code(tname); + vim_free(tname); + if (p == NULL) /* ignore non-existing things */ + p = (char_u *)""; + + /* Append it to the already found stuff */ + if ((int)(STRLEN(buf) + STRLEN(p)) >= 99) + { + EMSG2(_("E422: terminal code too long: %s"), arg); + error = TRUE; + break; + } + STRCAT(buf, p); + + /* Advance to the next item */ + off += len; + if (arg[off] == ',') /* another one follows */ + ++off; + } + } + else + { + /* + * Copy characters from arg[] to buf[], translating <> codes. + */ + for (p = arg, off = 0; off < 100 && *p; ) + { + len = trans_special(&p, buf + off, FALSE); + if (len) /* recognized special char */ + off += len; + else /* copy as normal char */ + buf[off++] = *p++; + } + buf[off] = NUL; + } + if (error) + break; + + if (STRCMP(buf, "NONE") == 0) /* resetting the value */ + p = NULL; + else + p = vim_strsave(buf); + if (key[2] == 'A') + { + vim_free(HL_TABLE()[idx].sg_start); + HL_TABLE()[idx].sg_start = p; + } + else + { + vim_free(HL_TABLE()[idx].sg_stop); + HL_TABLE()[idx].sg_stop = p; + } + } + else + { + EMSG2(_("E423: Illegal argument: %s"), key_start); + error = TRUE; + break; + } + + /* + * When highlighting has been given for a group, don't link it. + */ + if (!init || !(HL_TABLE()[idx].sg_set & SG_LINK)) + HL_TABLE()[idx].sg_link = 0; + + /* + * Continue with next argument. + */ + linep = skipwhite(linep); + } + + /* + * If there is an error, and it's a new entry, remove it from the table. + */ + if (error && idx == highlight_ga.ga_len) + syn_unadd_group(); + else + { + if (is_normal_group) + { + HL_TABLE()[idx].sg_term_attr = 0; + HL_TABLE()[idx].sg_cterm_attr = 0; +#ifdef FEAT_GUI + HL_TABLE()[idx].sg_gui_attr = 0; + /* + * Need to update all groups, because they might be using "bg" + * and/or "fg", which have been changed now. + */ + if (gui.in_use) + highlight_gui_started(); +#endif + } +#ifdef FEAT_GUI_X11 +# ifdef FEAT_MENU + else if (is_menu_group) + { + if (gui.in_use && do_colors) + gui_mch_new_menu_colors(); + } +# endif + else if (is_scrollbar_group) + { + if (gui.in_use && do_colors) + gui_new_scrollbar_colors(); + } +# ifdef FEAT_BEVAL + else if (is_tooltip_group) + { + if (gui.in_use && do_colors) + gui_mch_new_tooltip_colors(); + } +# endif +#endif + else + set_hl_attr(idx); + redraw_all_later(NOT_VALID); + } + vim_free(key); + vim_free(arg); + + /* Only call highlight_changed() once, after sourcing a syntax file */ + need_highlight_changed = TRUE; +} + +/* + * Reset the cterm colors to what they were before Vim was started, if + * possible. Otherwise reset them to zero. + */ + void +restore_cterm_colors() +{ +#if defined(MSDOS) || (defined(WIN3264) && !defined(FEAT_GUI_W32)) + /* Since t_me has been set, this probably means that the user + * wants to use this as default colors. Need to reset default + * background/foreground colors. */ + mch_set_normal_colors(); +#else + cterm_normal_fg_color = 0; + cterm_normal_fg_bold = 0; + cterm_normal_bg_color = 0; +#endif +} + +/* + * Return TRUE if highlight group "idx" has any settings. + * When "check_link" is TRUE also check for an existing link. + */ + static int +hl_has_settings(idx, check_link) + int idx; + int check_link; +{ + return ( HL_TABLE()[idx].sg_term_attr != 0 + || HL_TABLE()[idx].sg_cterm_attr != 0 +#ifdef FEAT_GUI + || HL_TABLE()[idx].sg_gui_attr != 0 +#endif + || (check_link && (HL_TABLE()[idx].sg_set & SG_LINK))); +} + +/* + * Clear highlighting for one group. + */ + static void +highlight_clear(idx) + int idx; +{ + HL_TABLE()[idx].sg_term = 0; + vim_free(HL_TABLE()[idx].sg_start); + HL_TABLE()[idx].sg_start = NULL; + vim_free(HL_TABLE()[idx].sg_stop); + HL_TABLE()[idx].sg_stop = NULL; + HL_TABLE()[idx].sg_term_attr = 0; + HL_TABLE()[idx].sg_cterm = 0; + HL_TABLE()[idx].sg_cterm_bold = FALSE; + HL_TABLE()[idx].sg_cterm_fg = 0; + HL_TABLE()[idx].sg_cterm_bg = 0; + HL_TABLE()[idx].sg_cterm_attr = 0; +#ifdef FEAT_GUI /* in non-GUI fonts are simply ignored */ + HL_TABLE()[idx].sg_gui = 0; + HL_TABLE()[idx].sg_gui_fg = INVALCOLOR; + vim_free(HL_TABLE()[idx].sg_gui_fg_name); + HL_TABLE()[idx].sg_gui_fg_name = NULL; + HL_TABLE()[idx].sg_gui_bg = INVALCOLOR; + vim_free(HL_TABLE()[idx].sg_gui_bg_name); + HL_TABLE()[idx].sg_gui_bg_name = NULL; + gui_mch_free_font(HL_TABLE()[idx].sg_font); + HL_TABLE()[idx].sg_font = NOFONT; +# ifdef FEAT_XFONTSET + gui_mch_free_fontset(HL_TABLE()[idx].sg_fontset); + HL_TABLE()[idx].sg_fontset = NOFONTSET; +# endif + vim_free(HL_TABLE()[idx].sg_font_name); + HL_TABLE()[idx].sg_font_name = NULL; + HL_TABLE()[idx].sg_gui_attr = 0; +#endif +} + +#if defined(FEAT_GUI) || defined(PROTO) +/* + * Set the normal foreground and background colors according to the "Normal" + * highlighighting group. For X11 also set "Menu", "Scrollbar", and + * "Tooltip" colors. + */ + void +set_normal_colors() +{ + if (set_group_colors((char_u *)"Normal", + &gui.norm_pixel, &gui.back_pixel, FALSE, TRUE, + FALSE)) + { + gui_mch_new_colors(); + must_redraw = CLEAR; + } +#ifdef FEAT_GUI_X11 + if (set_group_colors((char_u *)"Menu", + &gui.menu_fg_pixel, &gui.menu_bg_pixel, TRUE, FALSE, + FALSE)) + { +# ifdef FEAT_MENU + gui_mch_new_menu_colors(); +# endif + must_redraw = CLEAR; + } +# ifdef FEAT_BEVAL + if (set_group_colors((char_u *)"Tooltip", + &gui.tooltip_fg_pixel, &gui.tooltip_bg_pixel, + FALSE, FALSE, TRUE)) + { +# ifdef FEAT_TOOLBAR + gui_mch_new_tooltip_colors(); +# endif + must_redraw = CLEAR; + } +#endif + if (set_group_colors((char_u *)"Scrollbar", + &gui.scroll_fg_pixel, &gui.scroll_bg_pixel, FALSE, FALSE, + FALSE)) + { + gui_new_scrollbar_colors(); + must_redraw = CLEAR; + } +#endif +} + +/* + * Set the colors for "Normal", "Menu", "Tooltip" or "Scrollbar". + */ + static int +set_group_colors(name, fgp, bgp, do_menu, use_norm, do_tooltip) + char_u *name; + guicolor_T *fgp; + guicolor_T *bgp; + int do_menu; + int use_norm; + int do_tooltip; +{ + int idx; + + idx = syn_name2id(name) - 1; + if (idx >= 0) + { + gui_do_one_color(idx, do_menu, do_tooltip); + + if (HL_TABLE()[idx].sg_gui_fg != INVALCOLOR) + *fgp = HL_TABLE()[idx].sg_gui_fg; + else if (use_norm) + *fgp = gui.def_norm_pixel; + if (HL_TABLE()[idx].sg_gui_bg != INVALCOLOR) + *bgp = HL_TABLE()[idx].sg_gui_bg; + else if (use_norm) + *bgp = gui.def_back_pixel; + return TRUE; + } + return FALSE; +} + +/* + * Get the font of the "Normal" group. + * Returns "" when it's not found or not set. + */ + char_u * +hl_get_font_name() +{ + int id; + char_u *s; + + id = syn_name2id((char_u *)"Normal"); + if (id > 0) + { + s = HL_TABLE()[id - 1].sg_font_name; + if (s != NULL) + return s; + } + return (char_u *)""; +} + +/* + * Set font for "Normal" group. Called by gui_mch_init_font() when a font has + * actually chosen to be used. + */ + void +hl_set_font_name(font_name) + char_u *font_name; +{ + int id; + + id = syn_name2id((char_u *)"Normal"); + if (id > 0) + { + vim_free(HL_TABLE()[id - 1].sg_font_name); + HL_TABLE()[id - 1].sg_font_name = vim_strsave(font_name); + } +} + +/* + * Set background color for "Normal" group. Called by gui_set_bg_color() + * when the color is known. + */ + void +hl_set_bg_color_name(name) + char_u *name; /* must have been allocated */ +{ + int id; + + if (name != NULL) + { + id = syn_name2id((char_u *)"Normal"); + if (id > 0) + { + vim_free(HL_TABLE()[id - 1].sg_gui_bg_name); + HL_TABLE()[id - 1].sg_gui_bg_name = name; + } + } +} + +/* + * Set foreground color for "Normal" group. Called by gui_set_fg_color() + * when the color is known. + */ + void +hl_set_fg_color_name(name) + char_u *name; /* must have been allocated */ +{ + int id; + + if (name != NULL) + { + id = syn_name2id((char_u *)"Normal"); + if (id > 0) + { + vim_free(HL_TABLE()[id - 1].sg_gui_fg_name); + HL_TABLE()[id - 1].sg_gui_fg_name = name; + } + } +} + +/* + * Return the handle for a color name. + * Returns INVALCOLOR when failed. + */ + static guicolor_T +color_name2handle(name) + char_u *name; +{ + if (STRCMP(name, "NONE") == 0) + return INVALCOLOR; + + if (STRICMP(name, "fg") == 0 || STRICMP(name, "foreground") == 0) + return gui.norm_pixel; + if (STRICMP(name, "bg") == 0 || STRICMP(name, "background") == 0) + return gui.back_pixel; + + return gui_get_color(name); +} + +/* + * Return the handle for a font name. + * Returns NOFONT when failed. + */ + static GuiFont +font_name2handle(name) + char_u *name; +{ + if (STRCMP(name, "NONE") == 0) + return NOFONT; + + return gui_mch_get_font(name, TRUE); +} + +# ifdef FEAT_XFONTSET +/* + * Return the handle for a fontset name. + * Returns NOFONTSET when failed. + */ + static GuiFontset +fontset_name2handle(name, fixed_width) + char_u *name; + int fixed_width; +{ + if (STRCMP(name, "NONE") == 0) + return NOFONTSET; + + return gui_mch_get_fontset(name, TRUE, fixed_width); +} +# endif + +/* + * Get the font or fontset for one highlight group. + */ +/*ARGSUSED*/ + static void +hl_do_font(idx, arg, do_normal, do_menu, do_tooltip) + int idx; + char_u *arg; + int do_normal; /* set normal font */ + int do_menu; /* set menu font */ + int do_tooltip; /* set tooltip font */ +{ +# ifdef FEAT_XFONTSET + /* If 'guifontset' is not empty, first try using the name as a + * fontset. If that doesn't work, use it as a font name. */ + if (*p_guifontset != NUL +# ifdef FONTSET_ALWAYS + || do_menu +# endif +# ifdef FEAT_BEVAL_TIP + /* In Athena & Motif, the Tooltip highlight group is always a fontset */ + || do_tooltip +# endif + ) + HL_TABLE()[idx].sg_fontset = fontset_name2handle(arg, 0 +# ifdef FONTSET_ALWAYS + || do_menu +# endif +# ifdef FEAT_BEVAL_TIP + || do_tooltip +# endif + ); + if (HL_TABLE()[idx].sg_fontset != NOFONTSET) + { + /* If it worked and it's the Normal group, use it as the + * normal fontset. Same for the Menu group. */ + if (do_normal) + gui_init_font(arg, TRUE); +# if (defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_ATHENA)) && defined(FEAT_MENU) + if (do_menu) + { +# ifdef FONTSET_ALWAYS + gui.menu_fontset = HL_TABLE()[idx].sg_fontset; +# else + /* YIKES! This is a bug waiting to crash the program */ + gui.menu_font = HL_TABLE()[idx].sg_fontset; +# endif + gui_mch_new_menu_font(); + } +# ifdef FEAT_BEVAL + if (do_tooltip) + { + /* The Athena widget set cannot currently handle switching between + * displaying a single font and a fontset. + * If the XtNinternational resource is set to True at widget + * creation, then a fontset is always used, othwise an + * XFontStruct is used. + */ + gui.tooltip_fontset = (XFontSet)HL_TABLE()[idx].sg_fontset; + gui_mch_new_tooltip_font(); + } +# endif +# endif + } + else +# endif + { + HL_TABLE()[idx].sg_font = font_name2handle(arg); + /* If it worked and it's the Normal group, use it as the + * normal font. Same for the Menu group. */ + if (HL_TABLE()[idx].sg_font != NOFONT) + { + if (do_normal) + gui_init_font(arg, FALSE); +#ifndef FONTSET_ALWAYS +# if (defined(FEAT_GUI_MOTIF) || defined(FEAT_GUI_ATHENA)) && defined(FEAT_MENU) + if (do_menu) + { + gui.menu_font = HL_TABLE()[idx].sg_font; + gui_mch_new_menu_font(); + } +# endif +#endif + } + } +} + +#endif /* FEAT_GUI */ + +/* + * Table with the specifications for an attribute number. + * Note that this table is used by ALL buffers. This is required because the + * GUI can redraw at any time for any buffer. + */ +garray_T term_attr_table = {0, 0, 0, 0, NULL}; + +#define TERM_ATTR_ENTRY(idx) ((attrentry_T *)term_attr_table.ga_data)[idx] + +garray_T cterm_attr_table = {0, 0, 0, 0, NULL}; + +#define CTERM_ATTR_ENTRY(idx) ((attrentry_T *)cterm_attr_table.ga_data)[idx] + +#ifdef FEAT_GUI +garray_T gui_attr_table = {0, 0, 0, 0, NULL}; + +#define GUI_ATTR_ENTRY(idx) ((attrentry_T *)gui_attr_table.ga_data)[idx] +#endif + +/* + * Return the attr number for a set of colors and font. + * Add a new entry to the term_attr_table, cterm_attr_table or gui_attr_table + * if the combination is new. + * Return 0 for error (no more room). + */ + static int +get_attr_entry(table, aep) + garray_T *table; + attrentry_T *aep; +{ + int i; + attrentry_T *gap; + static int recursive = FALSE; + + /* + * Init the table, in case it wasn't done yet. + */ + table->ga_itemsize = sizeof(attrentry_T); + table->ga_growsize = 7; + + /* + * Try to find an entry with the same specifications. + */ + for (i = 0; i < table->ga_len; ++i) + { + gap = &(((attrentry_T *)table->ga_data)[i]); + if ( aep->ae_attr == gap->ae_attr + && ( +#ifdef FEAT_GUI + (table == &gui_attr_table + && (aep->ae_u.gui.fg_color == gap->ae_u.gui.fg_color + && aep->ae_u.gui.bg_color == gap->ae_u.gui.bg_color + && aep->ae_u.gui.font == gap->ae_u.gui.font +# ifdef FEAT_XFONTSET + && aep->ae_u.gui.fontset == gap->ae_u.gui.fontset +# endif + )) + || +#endif + (table == &term_attr_table + && (aep->ae_u.term.start == NULL) == + (gap->ae_u.term.start == NULL) + && (aep->ae_u.term.start == NULL + || STRCMP(aep->ae_u.term.start, + gap->ae_u.term.start) == 0) + && (aep->ae_u.term.stop == NULL) == + (gap->ae_u.term.stop == NULL) + && (aep->ae_u.term.stop == NULL + || STRCMP(aep->ae_u.term.stop, + gap->ae_u.term.stop) == 0)) + || (table == &cterm_attr_table + && aep->ae_u.cterm.fg_color == gap->ae_u.cterm.fg_color + && aep->ae_u.cterm.bg_color == gap->ae_u.cterm.bg_color) + )) + + return i + ATTR_OFF; + } + + if (table->ga_len + ATTR_OFF == 256) + { + /* + * Running out of attribute entries! remove all attributes, and + * compute new ones for all groups. + * When called recursively, we are really out of numbers. + */ + if (recursive) + { + EMSG(_("E424: Too many different highlighting attributes in use")); + return 0; + } + recursive = TRUE; + +#ifdef FEAT_GUI + ga_clear(&gui_attr_table); +#endif + ga_clear(&term_attr_table); + ga_clear(&cterm_attr_table); + must_redraw = CLEAR; + + for (i = 0; i < highlight_ga.ga_len; ++i) + set_hl_attr(i); + + recursive = FALSE; + } + + /* + * This is a new combination of colors and font, add an entry. + */ + if (ga_grow(table, 1) == FAIL) + return 0; + + gap = &(((attrentry_T *)table->ga_data)[table->ga_len]); + vim_memset(gap, 0, sizeof(attrentry_T)); + gap->ae_attr = aep->ae_attr; +#ifdef FEAT_GUI + if (table == &gui_attr_table) + { + gap->ae_u.gui.fg_color = aep->ae_u.gui.fg_color; + gap->ae_u.gui.bg_color = aep->ae_u.gui.bg_color; + gap->ae_u.gui.font = aep->ae_u.gui.font; +# ifdef FEAT_XFONTSET + gap->ae_u.gui.fontset = aep->ae_u.gui.fontset; +# endif + } +#endif + if (table == &term_attr_table) + { + if (aep->ae_u.term.start == NULL) + gap->ae_u.term.start = NULL; + else + gap->ae_u.term.start = vim_strsave(aep->ae_u.term.start); + if (aep->ae_u.term.stop == NULL) + gap->ae_u.term.stop = NULL; + else + gap->ae_u.term.stop = vim_strsave(aep->ae_u.term.stop); + } + else if (table == &cterm_attr_table) + { + gap->ae_u.cterm.fg_color = aep->ae_u.cterm.fg_color; + gap->ae_u.cterm.bg_color = aep->ae_u.cterm.bg_color; + } + ++table->ga_len; + --table->ga_room; + return (table->ga_len - 1 + ATTR_OFF); +} + +#ifdef FEAT_GUI + + attrentry_T * +syn_gui_attr2entry(attr) + int attr; +{ + attr -= ATTR_OFF; + if (attr >= gui_attr_table.ga_len) /* did ":syntax clear" */ + return NULL; + return &(GUI_ATTR_ENTRY(attr)); +} + +#endif /* FEAT_GUI */ + + attrentry_T * +syn_term_attr2entry(attr) + int attr; +{ + attr -= ATTR_OFF; + if (attr >= term_attr_table.ga_len) /* did ":syntax clear" */ + return NULL; + return &(TERM_ATTR_ENTRY(attr)); +} + + attrentry_T * +syn_cterm_attr2entry(attr) + int attr; +{ + attr -= ATTR_OFF; + if (attr >= cterm_attr_table.ga_len) /* did ":syntax clear" */ + return NULL; + return &(CTERM_ATTR_ENTRY(attr)); +} + +#define LIST_ATTR 1 +#define LIST_STRING 2 +#define LIST_INT 3 + + static void +highlight_list_one(id) + int id; +{ + struct hl_group *sgp; + int didh = FALSE; + + sgp = &HL_TABLE()[id - 1]; /* index is ID minus one */ + + didh = highlight_list_arg(id, didh, LIST_ATTR, + sgp->sg_term, NULL, "term"); + didh = highlight_list_arg(id, didh, LIST_STRING, + 0, sgp->sg_start, "start"); + didh = highlight_list_arg(id, didh, LIST_STRING, + 0, sgp->sg_stop, "stop"); + + didh = highlight_list_arg(id, didh, LIST_ATTR, + sgp->sg_cterm, NULL, "cterm"); + didh = highlight_list_arg(id, didh, LIST_INT, + sgp->sg_cterm_fg, NULL, "ctermfg"); + didh = highlight_list_arg(id, didh, LIST_INT, + sgp->sg_cterm_bg, NULL, "ctermbg"); + +#ifdef FEAT_GUI + didh = highlight_list_arg(id, didh, LIST_ATTR, + sgp->sg_gui, NULL, "gui"); + didh = highlight_list_arg(id, didh, LIST_STRING, + 0, sgp->sg_gui_fg_name, "guifg"); + didh = highlight_list_arg(id, didh, LIST_STRING, + 0, sgp->sg_gui_bg_name, "guibg"); + didh = highlight_list_arg(id, didh, LIST_STRING, + 0, sgp->sg_font_name, "font"); +#endif + + if (sgp->sg_link) + { + (void)syn_list_header(didh, 9999, id); + msg_puts_attr((char_u *)"links to", hl_attr(HLF_D)); + msg_putchar(' '); + msg_outtrans(HL_TABLE()[HL_TABLE()[id - 1].sg_link - 1].sg_name); + } +} + + static int +highlight_list_arg(id, didh, type, iarg, sarg, name) + int id; + int didh; + int type; + int iarg; + char_u *sarg; + char *name; +{ + char_u buf[100]; + char_u *ts; + int i; + + if (type == LIST_STRING ? (sarg != NULL) : (iarg != 0)) + { + ts = buf; + if (type == LIST_INT) + sprintf((char *)buf, "%d", iarg - 1); + else if (type == LIST_STRING) + ts = sarg; + else /* type == LIST_ATTR */ + { + buf[0] = NUL; + for (i = 0; hl_attr_table[i] != 0; ++i) + { + if (iarg & hl_attr_table[i]) + { + if (buf[0] != NUL) + STRCAT(buf, ","); + STRCAT(buf, hl_name_table[i]); + iarg &= ~hl_attr_table[i]; /* don't want "inverse" */ + } + } + } + + (void)syn_list_header(didh, + (int)(vim_strsize(ts) + STRLEN(name) + 1), id); + didh = TRUE; + + MSG_PUTS_ATTR(name, hl_attr(HLF_D)); + MSG_PUTS_ATTR("=", hl_attr(HLF_D)); + msg_outtrans(ts); + } + return didh; +} + +#if (((defined(FEAT_EVAL) || defined(FEAT_PRINTER))) && defined(FEAT_SYN_HL)) || defined(PROTO) +/* + * Return "1" if highlight group "id" has attribute "flag". + * Return NULL otherwise. + */ + char_u * +highlight_has_attr(id, flag, modec) + int id; + int flag; + int modec; /* 'g' for GUI, 'c' for cterm, 't' for term */ +{ + int attr; + + if (id <= 0 || id > highlight_ga.ga_len) + return NULL; + +#ifdef FEAT_GUI + if (modec == 'g') + attr = HL_TABLE()[id - 1].sg_gui; + else +#endif + if (modec == 'c') + attr = HL_TABLE()[id - 1].sg_cterm; + else + attr = HL_TABLE()[id - 1].sg_term; + + if (attr & flag) + return (char_u *)"1"; + return NULL; +} +#endif + +#if (defined(FEAT_SYN_HL) && defined(FEAT_EVAL)) || defined(PROTO) +/* + * Return color name of highlight group "id". + */ + char_u * +highlight_color(id, what, modec) + int id; + char_u *what; /* "fg", "bg", "fg#" or "bg#" */ + int modec; /* 'g' for GUI, 'c' for cterm, 't' for term */ +{ + static char_u name[20]; + int n; + int fg; + + if (id <= 0 || id > highlight_ga.ga_len) + return NULL; + + if (TOLOWER_ASC(what[0]) == 'f') + fg = TRUE; + else + fg = FALSE; +#ifdef FEAT_GUI + if (modec == 'g') + { + /* return #RRGGBB form (only possible when GUI is running) */ + if (gui.in_use && what[1] && what[2] == '#') + { + guicolor_T color; + long_u rgb; + static char_u buf[10]; + + if (fg) + color = HL_TABLE()[id - 1].sg_gui_fg; + else + color = HL_TABLE()[id - 1].sg_gui_bg; + if (color == INVALCOLOR) + return NULL; + rgb = gui_mch_get_rgb(color); + sprintf((char *)buf, "#%02x%02x%02x", + (unsigned)(rgb >> 16), + (unsigned)(rgb >> 8) & 255, + (unsigned)rgb & 255); + return buf; + } + if (fg) + return (HL_TABLE()[id - 1].sg_gui_fg_name); + return (HL_TABLE()[id - 1].sg_gui_bg_name); + } +#endif + if (modec == 'c') + { + if (fg) + n = HL_TABLE()[id - 1].sg_cterm_fg - 1; + else + n = HL_TABLE()[id - 1].sg_cterm_bg - 1; + sprintf((char *)name, "%d", n); + return name; + } + /* term doesn't have color */ + return NULL; +} +#endif + +#if (defined(FEAT_SYN_HL) && defined(FEAT_GUI) && defined(FEAT_PRINTER)) \ + || defined(PROTO) +/* + * Return color name of highlight group "id" as RGB value. + */ + long_u +highlight_gui_color_rgb(id, fg) + int id; + int fg; /* TRUE = fg, FALSE = bg */ +{ + guicolor_T color; + + if (id <= 0 || id > highlight_ga.ga_len) + return 0L; + + if (fg) + color = HL_TABLE()[id - 1].sg_gui_fg; + else + color = HL_TABLE()[id - 1].sg_gui_bg; + + if (color == INVALCOLOR) + return 0L; + + return gui_mch_get_rgb(color); +} +#endif + +/* + * Output the syntax list header. + * Return TRUE when started a new line. + */ + static int +syn_list_header(did_header, outlen, id) + int did_header; /* did header already */ + int outlen; /* length of string that comes */ + int id; /* highlight group id */ +{ + int endcol = 19; + int newline = TRUE; + + if (!did_header) + { + msg_putchar('\n'); + msg_outtrans(HL_TABLE()[id - 1].sg_name); + endcol = 15; + } + else if (msg_col + outlen + 1 >= Columns) + msg_putchar('\n'); + else + { + if (msg_col >= endcol) /* wrap around is like starting a new line */ + newline = FALSE; + } + + if (msg_col >= endcol) /* output at least one space */ + endcol = msg_col + 1; + if (Columns <= endcol) /* avoid hang for tiny window */ + endcol = Columns - 1; + + msg_advance(endcol); + + /* Show "xxx" with the attributes. */ + if (!did_header) + { + msg_puts_attr((char_u *)"xxx", syn_id2attr(id)); + msg_putchar(' '); + } + + return newline; +} + +/* + * Set the attribute numbers for a highlight group. + * Called after one of the attributes has changed. + */ + static void +set_hl_attr(idx) + int idx; /* index in array */ +{ + attrentry_T at_en; + struct hl_group *sgp = HL_TABLE() + idx; + + /* The "Normal" group doesn't need an attribute number */ + if (sgp->sg_name_u != NULL && STRCMP(sgp->sg_name_u, "NORMAL") == 0) + return; + +#ifdef FEAT_GUI + /* + * For the GUI mode: If there are other than "normal" highlighting + * attributes, need to allocate an attr number. + */ + if (sgp->sg_gui_fg == INVALCOLOR + && sgp->sg_gui_bg == INVALCOLOR + && sgp->sg_font == NOFONT +# ifdef FEAT_XFONTSET + && sgp->sg_fontset == NOFONTSET +# endif + ) + { + sgp->sg_gui_attr = sgp->sg_gui; + } + else + { + at_en.ae_attr = sgp->sg_gui; + at_en.ae_u.gui.fg_color = sgp->sg_gui_fg; + at_en.ae_u.gui.bg_color = sgp->sg_gui_bg; + at_en.ae_u.gui.font = sgp->sg_font; +# ifdef FEAT_XFONTSET + at_en.ae_u.gui.fontset = sgp->sg_fontset; +# endif + sgp->sg_gui_attr = get_attr_entry(&gui_attr_table, &at_en); + } +#endif + /* + * For the term mode: If there are other than "normal" highlighting + * attributes, need to allocate an attr number. + */ + if (sgp->sg_start == NULL && sgp->sg_stop == NULL) + sgp->sg_term_attr = sgp->sg_term; + else + { + at_en.ae_attr = sgp->sg_term; + at_en.ae_u.term.start = sgp->sg_start; + at_en.ae_u.term.stop = sgp->sg_stop; + sgp->sg_term_attr = get_attr_entry(&term_attr_table, &at_en); + } + + /* + * For the color term mode: If there are other than "normal" + * highlighting attributes, need to allocate an attr number. + */ + if (sgp->sg_cterm_fg == 0 && sgp->sg_cterm_bg == 0) + sgp->sg_cterm_attr = sgp->sg_cterm; + else + { + at_en.ae_attr = sgp->sg_cterm; + at_en.ae_u.cterm.fg_color = sgp->sg_cterm_fg; + at_en.ae_u.cterm.bg_color = sgp->sg_cterm_bg; + sgp->sg_cterm_attr = get_attr_entry(&cterm_attr_table, &at_en); + } +} + +/* + * Lookup a highlight group name and return it's ID. + * If it is not found, 0 is returned. + */ + int +syn_name2id(name) + char_u *name; +{ + int i; + char_u name_u[200]; + + /* Avoid using stricmp() too much, it's slow on some systems */ + /* Avoid alloc()/free(), these are slow too. ID names over 200 chars + * don't deserve to be found! */ + STRNCPY(name_u, name, 199); + name_u[199] = NUL; + vim_strup(name_u); + for (i = highlight_ga.ga_len; --i >= 0; ) + if (HL_TABLE()[i].sg_name_u != NULL + && STRCMP(name_u, HL_TABLE()[i].sg_name_u) == 0) + break; + return i + 1; +} + +#if defined(FEAT_EVAL) || defined(PROTO) +/* + * Return TRUE if highlight group "name" exists. + */ + int +highlight_exists(name) + char_u *name; +{ + return (syn_name2id(name) > 0); +} +#endif + +/* + * Like syn_name2id(), but take a pointer + length argument. + */ + int +syn_namen2id(linep, len) + char_u *linep; + int len; +{ + char_u *name; + int id = 0; + + name = vim_strnsave(linep, len); + if (name != NULL) + { + id = syn_name2id(name); + vim_free(name); + } + return id; +} + +/* + * Find highlight group name in the table and return it's ID. + * The argument is a pointer to the name and the length of the name. + * If it doesn't exist yet, a new entry is created. + * Return 0 for failure. + */ + int +syn_check_group(pp, len) + char_u *pp; + int len; +{ + int id; + char_u *name; + + name = vim_strnsave(pp, len); + if (name == NULL) + return 0; + + id = syn_name2id(name); + if (id == 0) /* doesn't exist yet */ + id = syn_add_group(name); + else + vim_free(name); + return id; +} + +/* + * Add new highlight group and return it's ID. + * "name" must be an allocated string, it will be consumed. + * Return 0 for failure. + */ + static int +syn_add_group(name) + char_u *name; +{ + char_u *p; + + /* Check that the name is ASCII letters, digits and underscore. */ + for (p = name; *p != NUL; ++p) + { + if (!vim_isprintc(*p)) + { + EMSG(_("E669: Unprintable character in group name")); + return 0; + } + else if (!ASCII_ISALNUM(*p) && *p != '_') + { + /* This is an error, but since there previously was no check only + * give a warning. */ + MSG(_("W18: Invalid character in group name")); + break; + } + } + + /* + * First call for this growarray: init growing array. + */ + if (highlight_ga.ga_data == NULL) + { + highlight_ga.ga_itemsize = sizeof(struct hl_group); + highlight_ga.ga_growsize = 10; + } + + /* + * Make room for at least one other syntax_highlight entry. + */ + if (ga_grow(&highlight_ga, 1) == FAIL) + { + vim_free(name); + return 0; + } + + vim_memset(&(HL_TABLE()[highlight_ga.ga_len]), 0, sizeof(struct hl_group)); + HL_TABLE()[highlight_ga.ga_len].sg_name = name; + HL_TABLE()[highlight_ga.ga_len].sg_name_u = vim_strsave_up(name); +#ifdef FEAT_GUI + HL_TABLE()[highlight_ga.ga_len].sg_gui_bg = INVALCOLOR; + HL_TABLE()[highlight_ga.ga_len].sg_gui_fg = INVALCOLOR; +#endif + ++highlight_ga.ga_len; + --highlight_ga.ga_room; + + return highlight_ga.ga_len; /* ID is index plus one */ +} + +/* + * When, just after calling syn_add_group(), an error is discovered, this + * function deletes the new name. + */ + static void +syn_unadd_group() +{ + --highlight_ga.ga_len; + ++highlight_ga.ga_room; + vim_free(HL_TABLE()[highlight_ga.ga_len].sg_name); + vim_free(HL_TABLE()[highlight_ga.ga_len].sg_name_u); +} + +/* + * Translate a group ID to highlight attributes. + */ + int +syn_id2attr(hl_id) + int hl_id; +{ + int attr; + struct hl_group *sgp; + + hl_id = syn_get_final_id(hl_id); + sgp = &HL_TABLE()[hl_id - 1]; /* index is ID minus one */ + +#ifdef FEAT_GUI + /* + * Only use GUI attr when the GUI is being used. + */ + if (gui.in_use) + attr = sgp->sg_gui_attr; + else +#endif + if (t_colors > 1) + attr = sgp->sg_cterm_attr; + else + attr = sgp->sg_term_attr; + + return attr; +} + +#ifdef FEAT_GUI +/* + * Get the GUI colors and attributes for a group ID. + * NOTE: the colors will be INVALCOLOR when not set, the color otherwise. + */ + int +syn_id2colors(hl_id, fgp, bgp) + int hl_id; + guicolor_T *fgp; + guicolor_T *bgp; +{ + struct hl_group *sgp; + + hl_id = syn_get_final_id(hl_id); + sgp = &HL_TABLE()[hl_id - 1]; /* index is ID minus one */ + + *fgp = sgp->sg_gui_fg; + *bgp = sgp->sg_gui_bg; + return sgp->sg_gui; +} +#endif + +/* + * Translate a group ID to the final group ID (following links). + */ + int +syn_get_final_id(hl_id) + int hl_id; +{ + int count; + struct hl_group *sgp; + + if (hl_id > highlight_ga.ga_len || hl_id < 1) + return 0; /* Can be called from eval!! */ + + /* + * Follow links until there is no more. + * Look out for loops! Break after 100 links. + */ + for (count = 100; --count >= 0; ) + { + sgp = &HL_TABLE()[hl_id - 1]; /* index is ID minus one */ + if (sgp->sg_link == 0 || sgp->sg_link > highlight_ga.ga_len) + break; + hl_id = sgp->sg_link; + } + + return hl_id; +} + +#ifdef FEAT_GUI +/* + * Call this function just after the GUI has started. + * It finds the font and color handles for the highlighting groups. + */ + void +highlight_gui_started() +{ + int idx; + + /* First get the colors from the "Normal" and "Menu" group, if set */ + set_normal_colors(); + + for (idx = 0; idx < highlight_ga.ga_len; ++idx) + gui_do_one_color(idx, FALSE, FALSE); + + highlight_changed(); +} + + static void +gui_do_one_color(idx, do_menu, do_tooltip) + int idx; + int do_menu; /* TRUE: might set the menu font */ + int do_tooltip; /* TRUE: might set the tooltip font */ +{ + int didit = FALSE; + + if (HL_TABLE()[idx].sg_font_name != NULL) + { + hl_do_font(idx, HL_TABLE()[idx].sg_font_name, FALSE, do_menu, + do_tooltip); + didit = TRUE; + } + if (HL_TABLE()[idx].sg_gui_fg_name != NULL) + { + HL_TABLE()[idx].sg_gui_fg = + color_name2handle(HL_TABLE()[idx].sg_gui_fg_name); + didit = TRUE; + } + if (HL_TABLE()[idx].sg_gui_bg_name != NULL) + { + HL_TABLE()[idx].sg_gui_bg = + color_name2handle(HL_TABLE()[idx].sg_gui_bg_name); + didit = TRUE; + } + if (didit) /* need to get a new attr number */ + set_hl_attr(idx); +} + +#endif + +/* + * Translate the 'highlight' option into attributes in highlight_attr[] and + * set up the user highlights User1..9. If FEAT_STL_OPT is in use, a set of + * corresponding highlights to use on top of HLF_SNC is computed. + * Called only when the 'highlight' option has been changed and upon first + * screen redraw after any :highlight command. + * Return FAIL when an invalid flag is found in 'highlight'. OK otherwise. + */ + int +highlight_changed() +{ + int hlf; + int i; + char_u *p; + int attr; + char_u *end; + int id; +#ifdef USER_HIGHLIGHT + char_u userhl[10]; +# ifdef FEAT_STL_OPT + int id_SNC = -1; + int id_S = -1; + int hlcnt; +# endif +#endif + static int hl_flags[HLF_COUNT] = HL_FLAGS; + + need_highlight_changed = FALSE; + + /* + * Clear all attributes. + */ + for (hlf = 0; hlf < (int)HLF_COUNT; ++hlf) + highlight_attr[hlf] = 0; + + /* + * First set all attributes to their default value. + * Then use the attributes from the 'highlight' option. + */ + for (i = 0; i < 2; ++i) + { + if (i) + p = p_hl; + else + p = get_highlight_default(); + if (p == NULL) /* just in case */ + continue; + + while (*p) + { + for (hlf = 0; hlf < (int)HLF_COUNT; ++hlf) + if (hl_flags[hlf] == *p) + break; + ++p; + if (hlf == (int)HLF_COUNT || *p == NUL) + return FAIL; + + /* + * Allow several hl_flags to be combined, like "bu" for + * bold-underlined. + */ + attr = 0; + for ( ; *p && *p != ','; ++p) /* parse upto comma */ + { + if (vim_iswhite(*p)) /* ignore white space */ + continue; + + if (attr > HL_ALL) /* Combination with ':' is not allowed. */ + return FAIL; + + switch (*p) + { + case 'b': attr |= HL_BOLD; + break; + case 'i': attr |= HL_ITALIC; + break; + case '-': + case 'n': /* no highlighting */ + break; + case 'r': attr |= HL_INVERSE; + break; + case 's': attr |= HL_STANDOUT; + break; + case 'u': attr |= HL_UNDERLINE; + break; + case ':': ++p; /* highlight group name */ + if (attr || *p == NUL) /* no combinations */ + return FAIL; + end = vim_strchr(p, ','); + if (end == NULL) + end = p + STRLEN(p); + id = syn_check_group(p, (int)(end - p)); + if (id == 0) + return FAIL; + attr = syn_id2attr(id); + p = end - 1; +#if defined(FEAT_STL_OPT) && defined(USER_HIGHLIGHT) + if (hlf == (int)HLF_SNC) + id_SNC = syn_get_final_id(id); + else if (hlf == (int)HLF_S) + id_S = syn_get_final_id(id); +#endif + break; + default: return FAIL; + } + } + highlight_attr[hlf] = attr; + + p = skip_to_option_part(p); /* skip comma and spaces */ + } + } + +#ifdef USER_HIGHLIGHT + /* Setup the user highlights + * + * Temporarily utilize 10 more hl entries. Have to be in there + * simultaneously in case of table overflows in get_attr_entry() + */ +# ifdef FEAT_STL_OPT + if (ga_grow(&highlight_ga, 10) == FAIL) + return FAIL; + hlcnt = highlight_ga.ga_len; + if (id_S == 0) + { /* Make sure id_S is always valid to simplify code below */ + memset(&HL_TABLE()[hlcnt + 9], 0, sizeof(struct hl_group)); + HL_TABLE()[hlcnt + 9].sg_term = highlight_attr[HLF_S]; + id_S = hlcnt + 10; + } +# endif + for (i = 0; i < 9; i++) + { + sprintf((char *)userhl, "User%d", i + 1); + id = syn_name2id(userhl); + if (id == 0) + { + highlight_user[i] = 0; +# ifdef FEAT_STL_OPT + highlight_stlnc[i] = 0; +# endif + } + else + { +# ifdef FEAT_STL_OPT + struct hl_group *hlt = HL_TABLE(); +# endif + + highlight_user[i] = syn_id2attr(id); +# ifdef FEAT_STL_OPT + if (id_SNC == 0) + { + memset(&hlt[hlcnt + i], 0, sizeof(struct hl_group)); + hlt[hlcnt + i].sg_term = highlight_attr[HLF_SNC]; + hlt[hlcnt + i].sg_cterm = highlight_attr[HLF_SNC]; +# ifdef FEAT_GUI + hlt[hlcnt + i].sg_gui = highlight_attr[HLF_SNC]; +# endif + } + else + mch_memmove(&hlt[hlcnt + i], + &hlt[id_SNC - 1], + sizeof(struct hl_group)); + hlt[hlcnt + i].sg_link = 0; + + /* Apply difference between UserX and HLF_S to HLF_SNC */ + hlt[hlcnt + i].sg_term ^= + hlt[id - 1].sg_term ^ hlt[id_S - 1].sg_term; + if (hlt[id - 1].sg_start != hlt[id_S - 1].sg_start) + hlt[hlcnt + i].sg_start = hlt[id - 1].sg_start; + if (hlt[id - 1].sg_stop != hlt[id_S - 1].sg_stop) + hlt[hlcnt + i].sg_stop = hlt[id - 1].sg_stop; + hlt[hlcnt + i].sg_cterm ^= + hlt[id - 1].sg_cterm ^ hlt[id_S - 1].sg_cterm; + if (hlt[id - 1].sg_cterm_fg != hlt[id_S - 1].sg_cterm_fg) + hlt[hlcnt + i].sg_cterm_fg = hlt[id - 1].sg_cterm_fg; + if (hlt[id - 1].sg_cterm_bg != hlt[id_S - 1].sg_cterm_bg) + hlt[hlcnt + i].sg_cterm_bg = hlt[id - 1].sg_cterm_bg; +# ifdef FEAT_GUI + hlt[hlcnt + i].sg_gui ^= + hlt[id - 1].sg_gui ^ hlt[id_S - 1].sg_gui; + if (hlt[id - 1].sg_gui_fg != hlt[id_S - 1].sg_gui_fg) + hlt[hlcnt + i].sg_gui_fg = hlt[id - 1].sg_gui_fg; + if (hlt[id - 1].sg_gui_bg != hlt[id_S - 1].sg_gui_bg) + hlt[hlcnt + i].sg_gui_bg = hlt[id - 1].sg_gui_bg; + if (hlt[id - 1].sg_font != hlt[id_S - 1].sg_font) + hlt[hlcnt + i].sg_font = hlt[id - 1].sg_font; +# ifdef FEAT_XFONTSET + if (hlt[id - 1].sg_fontset != hlt[id_S - 1].sg_fontset) + hlt[hlcnt + i].sg_fontset = hlt[id - 1].sg_fontset; +# endif +# endif + highlight_ga.ga_len = hlcnt + i + 1; + set_hl_attr(hlcnt + i); /* At long last we can apply */ + highlight_stlnc[i] = syn_id2attr(hlcnt + i + 1); +# endif + } + } +# ifdef FEAT_STL_OPT + highlight_ga.ga_len = hlcnt; +# endif + +#endif /* USER_HIGHLIGHT */ + + return OK; +} + +#ifdef FEAT_CMDL_COMPL + +static void highlight_list __ARGS((void)); +static void highlight_list_two __ARGS((int cnt, int attr)); + +/* + * Handle command line completion for :highlight command. + */ + void +set_context_in_highlight_cmd(xp, arg) + expand_T *xp; + char_u *arg; +{ + char_u *p; + + /* Default: expand group names */ + xp->xp_context = EXPAND_HIGHLIGHT; + xp->xp_pattern = arg; + include_link = TRUE; + include_default = TRUE; + + /* (part of) subcommand already typed */ + if (*arg != NUL) + { + p = skiptowhite(arg); + if (*p != NUL) /* past "default" or group name */ + { + include_default = FALSE; + if (STRNCMP("default", arg, p - arg) == 0) + { + arg = skipwhite(p); + xp->xp_pattern = arg; + p = skiptowhite(arg); + } + if (*p != NUL) /* past group name */ + { + include_link = FALSE; + if (arg[1] == 'i' && arg[0] == 'N') + highlight_list(); + if (STRNCMP("link", arg, p - arg) == 0 + || STRNCMP("clear", arg, p - arg) == 0) + { + xp->xp_pattern = skipwhite(p); + p = skiptowhite(xp->xp_pattern); + if (*p != NUL) /* past first group name */ + { + xp->xp_pattern = skipwhite(p); + p = skiptowhite(xp->xp_pattern); + } + } + if (*p != NUL) /* past group name(s) */ + xp->xp_context = EXPAND_NOTHING; + } + } + } +} + +/* + * List highlighting matches in a nice way. + */ + static void +highlight_list() +{ + int i; + + for (i = 10; --i >= 0; ) + highlight_list_two(i, hl_attr(HLF_D)); + for (i = 40; --i >= 0; ) + highlight_list_two(99, 0); +} + + static void +highlight_list_two(cnt, attr) + int cnt; + int attr; +{ + msg_puts_attr((char_u *)("N \bI \b! \b" + cnt / 11), attr); + msg_clr_eos(); + out_flush(); + ui_delay(cnt == 99 ? 40L : (long)cnt * 50L, FALSE); +} + +#endif /* FEAT_CMDL_COMPL */ + +#if defined(FEAT_CMDL_COMPL) || (defined(FEAT_SYN_HL) && defined(FEAT_EVAL)) \ + || defined(FEAT_SIGNS) || defined(PROTO) +/* + * Function given to ExpandGeneric() to obtain the list of group names. + * Also used for synIDattr() function. + */ +/*ARGSUSED*/ + char_u * +get_highlight_name(xp, idx) + expand_T *xp; + int idx; +{ + if (idx == highlight_ga.ga_len +#ifdef FEAT_CMDL_COMPL + && include_link +#endif + ) + return (char_u *)"link"; + if (idx == highlight_ga.ga_len + 1 +#ifdef FEAT_CMDL_COMPL + && include_link +#endif + ) + return (char_u *)"clear"; + if (idx == highlight_ga.ga_len + 2 +#ifdef FEAT_CMDL_COMPL + && include_default +#endif + ) + return (char_u *)"default"; + if (idx < 0 || idx >= highlight_ga.ga_len) + return NULL; + return HL_TABLE()[idx].sg_name; +} +#endif + +#ifdef FEAT_GUI +/* + * Free all the highlight group fonts. + * Used when quitting for systems which need it. + */ + void +free_highlight_fonts() +{ + int idx; + + for (idx = 0; idx < highlight_ga.ga_len; ++idx) + { + gui_mch_free_font(HL_TABLE()[idx].sg_font); + HL_TABLE()[idx].sg_font = NOFONT; +# ifdef FEAT_XFONTSET + gui_mch_free_fontset(HL_TABLE()[idx].sg_fontset); + HL_TABLE()[idx].sg_fontset = NOFONTSET; +# endif + } + + gui_mch_free_font(gui.norm_font); +# ifdef FEAT_XFONTSET + gui_mch_free_fontset(gui.fontset); +# endif +# ifndef HAVE_GTK2 + gui_mch_free_font(gui.bold_font); + gui_mch_free_font(gui.ital_font); + gui_mch_free_font(gui.boldital_font); +# endif +} +#endif + +/************************************** + * End of Highlighting stuff * + **************************************/ |