blob: 16eee0e8fe5cfc6e00117973d765db42dc50b33e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
/* Parser interface */
#define MAXSTACK 100
typedef struct _stackentry {
int s_state; /* State in current DFA */
dfa *s_dfa; /* Current DFA */
node *s_parent; /* Where to add next node */
} stackentry;
typedef struct _stack {
stackentry *s_top; /* Top entry */
stackentry s_base[MAXSTACK];/* Array of stack entries */
/* NB The stack grows down */
} stack;
typedef struct {
struct _stack p_stack; /* Stack of parser states */
struct _grammar *p_grammar; /* Grammar to use */
struct _node *p_tree; /* Top of parse tree */
} parser_state;
parser_state *newparser PROTO((struct _grammar *g, int start));
void delparser PROTO((parser_state *ps));
int addtoken PROTO((parser_state *ps, int type, char *str));
|
