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yacc.c: factor.

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yacc.c used to include two almost identical sections: one for the *.h
file, and another for the *.c file.  The main difference is that in
the *.c file we used the yy* names (as %name-prefix is handled by
"#define yy* <prefix>*" before), while the *.hh used <prefix>* names.
Keep only the later.  If this is troublesome, b4_shared_declarations
can easily take the desired prefix as argument.

* data/yacc.c (b4_shared_declarations): New.
Use it to factor duplicated declarations.
This commit is contained in:
Akim Demaille
2012-06-12 14:40:18 +02:00
parent c0828abf9d
commit ae6bdabbf6
1 changed files with 37 additions and 56 deletions
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93
data/yacc.c
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@@ -224,6 +224,39 @@ m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
yytype_int16 *yyes;
YYSIZE_T yyes_capacity;]])])
# b4_shared_declarations
# ----------------------
# Declaration that might either go into the header (if --defines)
# or open coded in the parser body.
m4_define([b4_shared_declarations],
[b4_percent_code_get([[requires]])[
]b4_token_enums_defines(b4_tokens)[
]b4_declare_yylstype[
]b4_push_if([[
#ifndef YYPUSH_DECLS
# define YYPUSH_DECLS
typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
enum { YYPUSH_MORE = 4 };
]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
[[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
[[[int yypushed_char]], [[yypushed_char]]],
[[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
[[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
b4_parse_param]))
b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
[[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
b4_parse_param]))])
b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
[[[void]], []])
b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
[[b4_prefix[pstate *yyps]], [[yyps]]])[
#endif
]])
b4_percent_code_get([[provides]])[]dnl
])
## -------------- ##
## Output files. ##
## -------------- ##
@@ -286,34 +319,9 @@ m4_if(b4_prefix, [yy], [],
# define YYTOKEN_TABLE ]b4_token_table[
#endif
]b4_percent_code_get([[requires]])[
]b4_token_enums_defines(b4_tokens)[
]b4_declare_yylstype[
]b4_push_if([[
#ifndef YYPUSH_DECLS
# define YYPUSH_DECLS
struct yypstate;
typedef struct yypstate yypstate;
enum { YYPUSH_MORE = 4 };
]b4_shared_declarations[
]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
])b4_c_function_decl([[yypush_parse]], [[int]],
[[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
[[[int yypushed_char]], [[yypushed_char]]],
[[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
[[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
b4_parse_param]))
b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
[[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
b4_parse_param]))])
b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
b4_c_function_decl([[yypstate_delete]], [[void]],
[[[yypstate *yyps]], [[yyps]]])[
#endif]])
b4_percent_code_get([[provides]])[]dnl
[/* Copy the second part of user declarations. */
/* Copy the second part of user declarations. */
]b4_user_post_prologue
b4_percent_code_get[]dnl
@@ -2044,36 +2052,9 @@ yypushreturn:]])[
b4_defines_if(
[@output(b4_spec_defines_file@)@
b4_copyright([Bison interface for Yacc-like parsers in C],
[1984, 1989-1990, 2000-2012])
b4_percent_code_get([[requires]])[]dnl
b4_token_enums_defines(b4_tokens)[
]b4_declare_yylstype[
[1984, 1989-1990, 2000-2012])[
]b4_shared_declarations[
]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;
]b4_locations_if([[extern YYLTYPE ]b4_prefix[lloc;]])])dnl
b4_push_if([[
#ifndef YYPUSH_DECLS
# define YYPUSH_DECLS
struct ]b4_prefix[pstate;
typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
enum { YYPUSH_MORE = 4 };
]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
[[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
[[[int yypushed_char]], [[yypushed_char]]],
[[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
[[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
b4_parse_param]))
b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
[[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
b4_parse_param]))])
b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
[[[void]], []])
b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
[[b4_prefix[pstate *yyps]], [[yyps]]])[
#endif
]])
b4_percent_code_get([[provides]])[]dnl
])dnl b4_defines_if
m4_divert_pop(0)