# define YYLTYPE_IS_TRIVIAL 1
#endif])
+b4_push_if([[#ifndef YYPUSH_DECLS
+# define YYPUSH_DECLS
+struct yypstate;
+typedef struct yypstate yypstate;
+enum { YYPUSH_MORE = 4 };
+]b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
+b4_c_function_decl([[yypstate_delete]], [[void]],
+ [[[yypstate *yyps]], [[yyps]]])
+b4_c_function_decl([[yypush_parse]], [[int]],
+ [[[yypstate *yyps]], [[yyps]]],
+ [[[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]))[
+#endif
+]])
m4_ifdef([b4_provides],
[[/* Copy the %provides blocks. */
]b4_user_provides])[]dnl
\f
]b4_yydestruct_generate([b4_c_function_def])[
-\f
-/* Prevent warnings from -Wmissing-prototypes. */
-
-]b4_push_if([
-struct yypstate;
-typedef struct yypstate yypstate;
-enum { YYPUSH_MORE = 4 };
-]b4_c_function_decl([yypstate_new], [yypstate *], [[void], []])[
-]b4_c_function_decl([yypstate_delete], [void], [[yypstate *yyps], [yyps]])[
-]b4_c_function_decl([yypush_parse], [int],
- [[yypstate *yyps], [yyps]],
- [[int yynchar], [yynchar]],
- [[YYSTYPE const *yynlval], [yynlval]]
- b4_locations_if([,[[YYLTYPE const *yynlloc], [yynlloc]]])
- m4_ifset([b4_parse_param], [, b4_parse_param]))[
-],[#ifdef YYPARSE_PARAM
+]b4_push_if([],
+[[/* Prevent warnings from -Wmissing-prototypes. */
+#ifdef YYPARSE_PARAM
]b4_c_function_decl([yyparse], [int],
[[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
#else /* ! YYPARSE_PARAM */
]b4_c_function_decl([yyparse], [int], b4_parse_param)[
-#endif /* ! YYPARSE_PARAM */])[
+#endif /* ! YYPARSE_PARAM */]])
-]m4_divert_push([KILL])# ======================== M4 code.
+m4_divert_push([KILL])# ======================== M4 code.
# b4_declare_scanner_communication_variables
# ------------------------------------------
# Declare the variables that are global, or local to YYPARSE if
# pure-parser.
m4_define([b4_declare_scanner_communication_variables],
-[/* The lookahead symbol. */
+[[/* The lookahead symbol. */
int yychar;
/* The semantic value of the lookahead symbol. */
YYSTYPE yylval;
-
-/* Number of syntax errors so far. */
-]b4_push_if([],[
-int yynerrs;])[b4_locations_if([
+]b4_locations_if([[
/* Location data for the lookahead symbol. */
-YYLTYPE yylloc;])
-])
-
-m4_define([b4_yyssa],b4_push_if([yyps->yyssa],[yyssa]))
-m4_define([b4_yyerror_range],b4_push_if([yyps->yyerror_range],[yyerror_range]))
+YYLTYPE yylloc;
+]])b4_pure_if([], [[
+/* Number of syntax errors so far. */
+int yynerrs;
+]])])
# b4_declare_parser_state_variables
# ---------------------------------
# Declare all the variables that are needed to maintain the parser state
# between calls to yypush_parse.
m4_define([b4_declare_parser_state_variables],
-[[
+[b4_pure_if([[ /* Number of syntax errors so far. */
+ int yynerrs;
+]])[
int yystate;
int yyn;
int yyresult;
/* Number of tokens to shift before error messages enabled. */
int yyerrstatus;
/* Look-ahead token as an internal (translated) token number. */
- int yytoken]b4_push_if([], [[ = 0]])[;
+ int yytoken;
/* Three stacks and their tools:
`yyss': related to states,
/* The state stack. */
yytype_int16 yyssa[YYINITDEPTH];
- yytype_int16 *yyss]b4_push_if([], [[ = yyssa]])[;
+ yytype_int16 *yyss;
yytype_int16 *yyssp;
/* The semantic value stack. */
YYSTYPE yyvsa[YYINITDEPTH];
- YYSTYPE *yyvs]b4_push_if([], [[ = yyvsa]])[;
- YYSTYPE *yyvsp;]b4_locations_if([[
+ YYSTYPE *yyvs;
+ YYSTYPE *yyvsp;
+]b4_locations_if([[
/* The location stack. */
YYLTYPE yylsa[YYINITDEPTH];
- YYLTYPE *yyls]b4_push_if([], [[ = yylsa]])[;
+ YYLTYPE *yyls;
YYLTYPE *yylsp;
+
/* The locations where the error started and ended. */
- YYLTYPE yyerror_range[2];]])[
- YYSIZE_T yystacksize]b4_push_if([], [[ = YYINITDEPTH]])[;
+ YYLTYPE yyerror_range[2];
+]])[
+ YYSIZE_T yystacksize;
+
/* The variables used to return semantic value and location from the
action routines. */
- YYSTYPE yyval;]b4_locations_if([[
- YYLTYPE yyloc;]])
-])
+ YYSTYPE yyval;
+]b4_locations_if([[ YYLTYPE yyloc;
+]])])
m4_divert_pop([KILL])dnl# ====================== End of M4 code.
};
/* Initialize the parser data structure. */
-]b4_c_function_def([yypstate_new], [yypstate *])[
+]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
{
yypstate *yyps = (yypstate *) malloc (sizeof *yyps);
- yyps->yystate = 0;
yyps->yyresult = -1;
- yyps->yyerrstatus = 0;
- yyps->yytoken = 0;
-
- yyps->yyss = yyps->yyssa;
- yyps->yyvs = yyps->yyvsa;
-
- ]b4_locations_if([
- yyps->yyls = yyps->yylsa;])[
- yyps->yystacksize = YYINITDEPTH;
-
- yyps->yyssp = yyps->yyss;
- yyps->yyvsp = yyps->yyvs;
-
yyps->yynew = 1;
-
-]b4_locations_if([ yyps->yylsp = yyps->yyls;])[
-
return yyps;
}
-]b4_c_function_def([yypstate_delete], [void],
- [[yypstate *yyps], [yyps]])[
+]b4_c_function_def([[yypstate_delete]], [[void]],
+ [[[yypstate *yyps]], [[yyps]]])[
{
free (yyps);
}
-#define yystate yyps->yystate
+]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
+]])[#define yystate yyps->yystate
#define yyn yyps->yyn
#define yyresult yyps->yyresult
#define yyerrstatus yyps->yyerrstatus
#define yytoken yyps->yytoken
+#define yyssa yyps->yyssa
#define yyss yyps->yyss
#define yyssp yyps->yyssp
+#define yyvsa yyps->yyvsa
#define yyvs yyps->yyvs
#define yyvsp yyps->yyvsp
-]b4_locations_if([[#define yyls yyps->yyls
+]b4_locations_if([[#define yylsa yyps->yylsa
+#define yyls yyps->yyls
#define yylsp yyps->yylsp
+#define yyerror_range yyps->yyerror_range
]])[#define yystacksize yyps->yystacksize
#define yyval yyps->yyval
]b4_locations_if([[#define yyloc yyps->yyloc
`-------------------------*/
]b4_push_if([
-b4_c_function_def([yypush_parse], [int], [[yypstate *yyps], [yyps]],
- [[int yynchar], [yynchar]],
- [[YYSTYPE const *yynlval], [yynlval]]
- b4_locations_if([,[[YYLTYPE const *yynlloc], [yynlloc]]])
- m4_ifset([b4_parse_param], [, b4_parse_param]))],[
+b4_c_function_def([[yypush_parse]], [[int]], [[[yypstate *yyps]], [[yyps]]],
+ [[[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]))], [
#ifdef YYPARSE_PARAM
b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
#else /* ! YYPARSE_PARAM */
/* The number of symbols on the RHS of the reduced rule.
Keep to zero when no symbol should be popped. */
int yylen = 0;
+]b4_push_if([[
+ if (!yyps->yynew)
+ goto yyread_pushed_token;
+]])[
+ yytoken = 0;
+ yyss = yyssa;
+ yyvs = yyvsa;
+]b4_locations_if([[ yyls = yylsa;
+]])[
+ yystacksize = YYINITDEPTH;
YYDPRINTF ((stderr, "Starting parse\n"));
-]b4_push_if([ yychar = yynchar;
- if (yynlval)
- yylval = *yynlval;
-]b4_locations_if([ if (yynlloc)
- yylloc = *yynlloc;])[],[yynerrs = 0;
- yychar = YYEMPTY; /* Cause a token to be read. */])[
-
-]b4_push_if([],[[
yystate = 0;
yyerrstatus = 0;
+ yynerrs = 0;
+ yychar = YYEMPTY; /* Cause a token to be read. */
/* Initialize stack pointers.
Waste one element of value and location stack
so that they stay on the same level as the state stack.
The wasted elements are never initialized. */
-
yyssp = yyss;
yyvsp = yyvs;
]b4_locations_if([[ yylsp = yyls;
+
#if YYLTYPE_IS_TRIVIAL
/* Initialize the default location before parsing starts. */
yylloc.first_line = yylloc.last_line = ]b4_location_initial_line[;
yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
-#endif]])
-])
-[ ]b4_push_if([
- if (yyps->yynew == 0)
- {
- goto gottoken;
- }
- yyps->yynew= 0;])
+#endif
+]])
m4_ifdef([b4_initial_action], [
m4_pushdef([b4_at_dollar], [m4_define([b4_at_dollar_used])yylloc])dnl
m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
- /* User initialization code. */
+/* User initialization code. */
b4_user_initial_action
m4_popdef([b4_dollar_dollar])dnl
m4_popdef([b4_at_dollar])])dnl
YYSTACK_RELOCATE (yyvs_alloc, yyvs);
]b4_locations_if([ YYSTACK_RELOCATE (yyls_alloc, yyls);])[
# undef YYSTACK_RELOCATE
- if (yyss1 != ]b4_yyssa[)
+ if (yyss1 != yyssa)
YYSTACK_FREE (yyss1);
}
# endif
/* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
if (yychar == YYEMPTY)
{
- ]b4_push_if([
- YYDPRINTF ((stderr, "Return for a new token:\n"));
- yyresult = YYPUSH_MORE;
- goto yypushreturn;
-gottoken:])[
- YYDPRINTF ((stderr, "Reading a token: "));
- ]b4_push_if([], [yychar = YYLEX;])[
- }
+]b4_push_if([[ if (!yyps->yynew)
+ {
+ YYDPRINTF ((stderr, "Return for a new token:\n"));
+ yyresult = YYPUSH_MORE;
+ goto yypushreturn;
+ }
+ yyps->yynew = 0;
+
+yyread_pushed_token:
+]])[ YYDPRINTF ((stderr, "Reading a token: "));
+]b4_push_if([[ yychar = yypushed_char;
+ if (yypushed_val)
+ yylval = *yypushed_val;
+]b4_locations_if([[ if (yypushed_loc)
+ yylloc = *yypushed_loc;]])],
+[[ yychar = YYLEX;
+]])[ }
if (yychar <= YYEOF)
{
/* If not already recovering from an error, report this error. */
if (!yyerrstatus)
{
-]b4_push_if([],[ ++yynerrs;])[
+ ++yynerrs;
#if ! YYERROR_VERBOSE
yyerror (]b4_yyerror_args[YY_("syntax error"));
#else
#endif
}
-]b4_locations_if([[ ]b4_yyerror_range[[0] = yylloc;]])[
+]b4_locations_if([[ yyerror_range[0] = yylloc;]])[
if (yyerrstatus == 3)
{
if (/*CONSTCOND*/ 0)
goto yyerrorlab;
-]b4_locations_if([[ ]b4_yyerror_range[[0] = yylsp[1-yylen];
+]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen];
]])[ /* Do not reclaim the symbols of the rule which action triggered
this YYERROR. */
YYPOPSTACK (yylen);
if (yyssp == yyss)
YYABORT;
-]b4_locations_if([[ ]b4_yyerror_range[[0] = *yylsp;]])[
+]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[
yydestruct ("Error: popping",
yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
YYPOPSTACK (1);
*++yyvsp = yylval;
]b4_locations_if([[
- ]b4_yyerror_range[[1] = yylloc;
+ yyerror_range[1] = yylloc;
/* Using YYLLOC is tempting, but would change the location of
the lookahead. YYLOC is available though. */
- YYLLOC_DEFAULT (yyloc, (]b4_yyerror_range[- 1), 2);
+ YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
*++yylsp = yyloc;]])[
/* Shift the error token. */
YYPOPSTACK (1);
}
#ifndef yyoverflow
- if (yyss != ]b4_yyssa[)
+ if (yyss != yyssa)
YYSTACK_FREE (yyss);
#endif
]b4_push_if([yypushreturn:])[
# define YYSTYPE_IS_DECLARED 1
#endif
-]b4_pure_if([],
-[extern YYSTYPE b4_prefix[]lval;])
+]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
b4_locations_if(
[#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
# define YYLTYPE_IS_TRIVIAL 1
#endif
-]b4_pure_if([],
- [extern YYLTYPE b4_prefix[]lloc;])
+]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
)dnl b4_locations_if
-]b4_push_if([struct ]b4_prefix[pstate;
+b4_push_if([[#ifndef YYPUSH_DECLS
+# define YYPUSH_DECLS
+struct ]b4_prefix[pstate;
typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
-]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]])[
-]b4_c_function_decl([]b4_prefix[push_parse], [int],
- [[]b4_prefix[pstate *]b4_prefix[pstate], []b4_prefix[pstate]],
- [[int yynchar], [yynchar]],
- [[YYSTYPE const *yynlval], [yynlval]]
- b4_locations_if([,[[YYLTYPE const *yynlloc], [yynlloc]]])
- m4_ifset([b4_parse_param], [, b4_parse_param]))[
-enum { YYPUSH_MORE = 4 };])[
-
+enum { YYPUSH_MORE = 4 };
+]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]]])
+b4_c_function_decl([b4_prefix[push_parse]], [[int]],
+ [[b4_prefix[pstate *yyps]], [[yyps]]],
+ [[[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]))[
+#endif
+]])
m4_ifdef([b4_provides],
[[/* Copy the %provides blocks. */
]b4_user_provides])[]
projects / bison.git / blobdiff