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/* The lang_hooks data structure.
Copyright 2001 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef GCC_LANG_HOOKS_H
#define GCC_LANG_HOOKS_H
/* A print hook for print_tree (). */
typedef void (*lang_print_tree_hook) PARAMS ((FILE *, tree, int indent));
/* The following hooks are documented in langhooks.c. Must not be
NULL. */
struct lang_hooks_for_tree_inlining
{
union tree_node *(*walk_subtrees) PARAMS ((union tree_node **, int *,
union tree_node *(*)
(union tree_node **,
int *, void *),
void *, void *));
int (*cannot_inline_tree_fn) PARAMS ((union tree_node **));
int (*disregard_inline_limits) PARAMS ((union tree_node *));
union tree_node *(*add_pending_fn_decls) PARAMS ((void *,
union tree_node *));
int (*tree_chain_matters_p) PARAMS ((union tree_node *));
int (*auto_var_in_fn_p) PARAMS ((union tree_node *, union tree_node *));
union tree_node *(*copy_res_decl_for_inlining) PARAMS ((union tree_node *,
union tree_node *,
union tree_node *,
void *, int *,
void *));
int (*anon_aggr_type_p) PARAMS ((union tree_node *));
};
/* Language-specific hooks. See langhooks-def.h for defaults. */
struct lang_hooks
{
/* String identifying the front end. e.g. "GNU C++". */
const char *name;
/* sizeof (struct lang_identifier), so make_node () creates
identifier nodes long enough for the language-specific slots. */
size_t identifier_size;
/* Called after options parsing, to initialize the front end. The
main input filename is passed, which may be NULL; the front end
should return the original filename (e.g. foo.i -> foo.c).
Return NULL to indicate a serious error of some sort; in that
case no compilation is performed, and the finish hook is called
immediately. */
const char * (*init) PARAMS ((const char *));
/* Called last, as a finalizer. */
void (*finish) PARAMS ((void));
/* Called immediately after parsing to clear the binding stack. */
void (*clear_binding_stack) PARAMS ((void));
/* Called to initialize options, before any calls to decode_option. */
void (*init_options) PARAMS ((void));
/* Function called with an option vector as argument, to decode a
single option (typically starting with -f or -W or +). It should
return the number of command-line arguments it uses if it handles
the option, or 0 and not complain if it does not recognise the
option. If this function returns a negative number, then its
absolute value is the number of command-line arguments used, but,
in addition, no language-independent option processing should be
done for this option. */
int (*decode_option) PARAMS ((int, char **));
/* Called when all command line options have been parsed. */
void (*post_options) PARAMS ((void));
/* Called to obtain the alias set to be used for an expression or type.
Returns -1 if the language does nothing special for it. */
HOST_WIDE_INT (*get_alias_set) PARAMS ((tree));
/* Nonzero if TYPE_READONLY and TREE_READONLY should always be honored. */
bool honor_readonly;
/* The front end can add its own statistics to -fmem-report with
this hook. It should output to stderr. */
void (*print_statistics) PARAMS ((void));
/* Called by print_tree when there is a tree of class 'x' that it
doesn't know how to display. */
lang_print_tree_hook print_xnode;
/* Called to print language-dependent parts of a class 'd', class
't', and IDENTIFIER_NODE nodes. */
lang_print_tree_hook print_decl;
lang_print_tree_hook print_type;
lang_print_tree_hook print_identifier;
/* Set yydebug for bison-based parsers, when -dy is given on the
command line. By default, if the parameter is non-zero, prints a
warning that the front end does not use such a parser. */
void (*set_yydebug) PARAMS ((int));
struct lang_hooks_for_tree_inlining tree_inlining;
/* Whenever you add entries here, make sure you adjust langhooks.h
and langhooks.c accordingly. */
};
/* Each front end provides its own. */
extern const struct lang_hooks lang_hooks;
#endif /* GCC_LANG_HOOKS_H */
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