# We do want M4 expansion after # for CPP macros.
m4_changecom()
m4_divert(0)dnl
-@output @output_parser_name@
+@output b4_parser_file_name
b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
]b4_identification
m4_if(b4_prefix, [yy], [],
[/* Substitute the variable and function names. */
-#define yyparse b4_prefix[]parse
-]b4_push_if([#define yypushparse b4_prefix[]pushparse
-#define yypvarsinit b4_prefix[]pvarsinit
-#define yypvars b4_prefix[]pvars])[
+]b4_push_if([#define yypush_parse b4_prefix[]push_parse
+#define yypstate_new b4_prefix[]pstate_new
+#define yypstate_delete b4_prefix[]pstate_delete
+#define yypstate b4_prefix[]pstate],
+[#define yyparse b4_prefix[]parse])[
#define yylex b4_prefix[]lex
#define yyerror b4_prefix[]error
#define yylval b4_prefix[]lval
#define yychar b4_prefix[]char
#define yydebug b4_prefix[]debug
#define yynerrs b4_prefix[]nerrs
-b4_locations_if([#define yylloc b4_prefix[]lloc])
-b4_push_if([
-#define yychar_set b4_prefix[]char_set
-#define yylval_set b4_prefix[]lval_set
-#define yylloc_set b4_prefix[]lloc_set])])[
+b4_locations_if([#define yylloc b4_prefix[]lloc])])[
/* Copy the first part of user declarations. */
]b4_user_pre_prologue[
/* A type that is properly aligned for any stack member. */
union yyalloc
{
- yytype_int16 yyss;
- YYSTYPE yyvs;
- ]b4_locations_if([ YYLTYPE yyls;
+ yytype_int16 yyss_alloc;
+ YYSTYPE yyvs_alloc;
+ ]b4_locations_if([ YYLTYPE yyls_alloc;
])dnl
[};
elements in the stack, and YYPTR gives the new location of the
stack. Advance YYPTR to a properly aligned location for the next
stack. */
-# define YYSTACK_RELOCATE(Stack) \
+# define YYSTACK_RELOCATE(Stack_alloc, Stack) \
do \
{ \
YYSIZE_T yynewbytes; \
- YYCOPY (&yyptr->Stack, Stack, yysize); \
- Stack = &yyptr->Stack; \
+ YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \
+ Stack = &yyptr->Stack_alloc; \
yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
yyptr += yynewbytes / sizeof (*yyptr); \
} \
[[YYSTYPE *yyvsp], [yyvsp]],
b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
- ])b4_parse_param)[
+ b4_parse_param]))[
{
int yynrhs = yyr2[yyrule];
int yyi;
/* Prevent warnings from -Wmissing-prototypes. */
-#ifdef YYPARSE_PARAM
+]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_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 */
-
-]b4_push_if([
-struct yypvars;
-enum { YYPUSH_MORE = 4 };
-]b4_c_function_decl([yychar_set], [void], [[struct yypvars *YYPVARS], [YYPVARS]], [[int yychar], [yychar]])[
-]b4_c_function_decl([yylval_set], [void], [[struct yypvars *YYPVARS], [YYPVARS]], [[YYSTYPE yylval], [yylval]])[
-#ifdef YYLTYPE_IS_TRIVIAL
-]b4_c_function_decl([yylloc_set], [void], [[struct yypvars *YYPVARS], [YYPVARS]], [[YYLTYPE yylloc], [yylloc]])[
-#endif
-]b4_c_function_decl([yypvarsinit], [void *], [[void], []])[
-]b4_c_function_decl([yypushparse], [int],
- [[struct yypvars *YYPVARS], [YYPVARS]])[
-])[
+#endif /* ! YYPARSE_PARAM */])[
]m4_divert_push([KILL])# ======================== M4 code.
-# b4_declare_parser_variables
-# ---------------------------
+# b4_declare_scanner_communication_variables
+# ------------------------------------------
# Declare the variables that are global, or local to YYPARSE if
# pure-parser.
-m4_define([b4_declare_parser_variables],
+m4_define([b4_declare_scanner_communication_variables],
[/* The lookahead symbol. */
int yychar;
YYSTYPE yylval;
/* Number of syntax errors so far. */
-int yynerrs;b4_locations_if([
+]b4_push_if([],[
+int yynerrs;])[b4_locations_if([
/* Location data for the lookahead symbol. */
YYLTYPE yylloc;])
])
-m4_define([b4_yyssa],b4_push_if([pv->yyssa],[yyssa]))
-m4_define([b4_yyerror_range],b4_push_if([pv->yyerror_range],[yyerror_range]))
+m4_define([b4_yyssa],b4_push_if([yyps->yyssa],[yyssa]))
+m4_define([b4_yyerror_range],b4_push_if([yyps->yyerror_range],[yyerror_range]))
-# b4_declare_yyparse_variables
-# ----------------------------
-# Declare all the variables that are needed local to YYPARSE
-m4_define([b4_declare_yyparse_variables],
-[[struct yypvars
- {
-]]b4_declare_parser_variables[[
+# 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],
+[[
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;
+ int yytoken]b4_push_if([], [[ = 0]])[;
/* Three stacks and their tools:
`yyss': related to states,
/* The state stack. */
yytype_int16 yyssa[YYINITDEPTH];
- yytype_int16 *yyss;
+ yytype_int16 *yyss]b4_push_if([], [[ = yyssa]])[;
yytype_int16 *yyssp;
/* The semantic value stack. */
YYSTYPE yyvsa[YYINITDEPTH];
- YYSTYPE *yyvs;
- YYSTYPE *yyvsp;]]b4_locations_if([[[
+ YYSTYPE *yyvs]b4_push_if([], [[ = yyvsa]])[;
+ YYSTYPE *yyvsp;]b4_locations_if([[
/* The location stack. */
YYLTYPE yylsa[YYINITDEPTH];
- YYLTYPE *yyls;
+ YYLTYPE *yyls]b4_push_if([], [[ = yylsa]])[;
YYLTYPE *yylsp;
/* The locations where the error started and ended. */
- YYLTYPE yyerror_range[2];]]])[
- YYSIZE_T yystacksize;
- int yylen;
+ YYLTYPE yyerror_range[2];]])[
+ YYSIZE_T yystacksize]b4_push_if([], [[ = YYINITDEPTH]])[;
/* The variables used to return semantic value and location from the
action routines. */
- YYSTYPE yyval;
+ YYSTYPE yyval;]b4_locations_if([[
+ YYLTYPE yyloc;]])
+])
+
+m4_divert_pop([KILL])dnl# ====================== End of M4 code.
+
+b4_pure_if([], [b4_declare_scanner_communication_variables])
+
+b4_push_if(
+[[struct yypstate
+ {
+ ]b4_declare_parser_state_variables[
/* Used to determine if this is the first time this instance has
been used. */
- int yynew;]b4_locations_if([YYLTYPE yyloc;])[
+ int yynew;
};
/* Initialize the parser data structure. */
-void *
-yypvarsinit (void)
+]b4_c_function_def([yypstate_new], [yypstate *])[
{
- struct yypvars *pv = (struct yypvars *) malloc (sizeof *pv);
- pv->yystate = 0;
- pv->yyresult = -1;
- pv->yyerrstatus = 0;
- pv->yytoken = 0;
+ yypstate *yyps = (yypstate *) malloc (sizeof *yyps);
+ yyps->yystate = 0;
+ yyps->yyresult = -1;
+ yyps->yyerrstatus = 0;
+ yyps->yytoken = 0;
- pv->yyss = pv->yyssa;
- pv->yyvs = pv->yyvsa;
+ yyps->yyss = yyps->yyssa;
+ yyps->yyvs = yyps->yyvsa;
]b4_locations_if([
- pv->yyls = pv->yylsa;])[
- pv->yystacksize = YYINITDEPTH;
+ yyps->yyls = yyps->yylsa;])[
+ yyps->yystacksize = YYINITDEPTH;
- pv->yyssp = pv->yyss;
- pv->yyvsp = pv->yyvs;
+ yyps->yyssp = yyps->yyss;
+ yyps->yyvsp = yyps->yyvs;
-#if YYLTYPE_IS_TRIVIAL
- /* Initialize the default location before parsing starts. */
- pv->yylloc.first_line = pv->yylloc.last_line = ]b4_location_initial_line[;
- pv->yylloc.first_column = pv->yylloc.last_column = ]b4_location_initial_column[;
-#endif
-
- pv->yynew = 1;
-
-]b4_locations_if([ pv->yylsp = pv->yyls;])[
+ yyps->yynew = 1;
- return (void *) pv;
-}
-
-void
-yychar_set (struct yypvars *YYPVARS, int yychar)
-{
- if (YYPVARS)
- YYPVARS->yychar = yychar;
-}
+]b4_locations_if([ yyps->yylsp = yyps->yyls;])[
-void
-yylval_set (struct yypvars *YYPVARS, YYSTYPE yylval)
-{
- if (YYPVARS)
- YYPVARS->yylval = yylval;
+ return yyps;
}
-#ifdef YYLTYPE_IS_TRIVIAL
-void
-yylloc_set (struct yypvars *YYPVARS, YYLTYPE yylloc)
+]b4_c_function_def([yypstate_delete], [void],
+ [[yypstate *yyps], [yyps]])[
{
- if (YYPVARS)
- YYPVARS->yylloc = yylloc;
+ free (yyps);
}
-#endif])
-m4_divert_pop([KILL])dnl# ====================== End of M4 code.
-
-b4_pure_if([],
- [b4_declare_parser_variables])
-b4_push_if([b4_declare_yyparse_variables])
+#define yystate yyps->yystate
+#define yyn yyps->yyn
+#define yyresult yyps->yyresult
+#define yyerrstatus yyps->yyerrstatus
+#define yytoken yyps->yytoken
+#define yyss yyps->yyss
+#define yyssp yyps->yyssp
+#define yyvs yyps->yyvs
+#define yyvsp yyps->yyvsp
+]b4_locations_if([[#define yyls yyps->yyls
+#define yylsp yyps->yylsp
+]])[#define yystacksize yyps->yystacksize
+#define yyval yyps->yyval
+]b4_locations_if([[#define yyloc yyps->yyloc
+]])])[
/*-------------------------.
-| yyparse or yypushparse. |
+| yyparse or yypush_parse. |
`-------------------------*/
-b4_push_if([
-b4_c_function_def([yypushparse], [int], [[struct yypvars *YYPVARS], [YYPVARS]])],[
+]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]))],[
#ifdef YYPARSE_PARAM
b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
#else /* ! YYPARSE_PARAM */
b4_c_function_def([yyparse], [int], b4_parse_param)
-#endif])
-{[
- ]b4_pure_if([b4_declare_parser_variables])[
- ]b4_push_if([struct yypvars *pv;])[
- int yystate;
- int yyn;
- int yyresult;
- /* Number of tokens to shift before error messages enabled. */
- int yyerrstatus;
- /* Lookahead token as an internal (translated) token number. */
- int yytoken = 0;
+#endif])[
+{
+ ]b4_pure_if([b4_declare_scanner_communication_variables])
+ b4_push_if([], [b4_declare_parser_state_variables])[
+
#if YYERROR_VERBOSE
/* Buffer for error messages, and its allocated size. */
char yymsgbuf[128];
YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
#endif
- /* Three stacks and their tools:
- `yyss': related to states,
- `yyvs': related to semantic values,
- `yyls': related to locations.
-
- Refer to the stacks thru separate pointers, to allow yyoverflow
- to reallocate them elsewhere. */
-
- /* The state stack. */
- yytype_int16 yyssa[YYINITDEPTH];
- yytype_int16 *yyss = yyssa;
- yytype_int16 *yyssp;
-
- /* The semantic value stack. */
- YYSTYPE yyvsa[YYINITDEPTH];
- YYSTYPE *yyvs = yyvsa;
- YYSTYPE *yyvsp;
-
-]b4_locations_if(
-[[ /* The location stack. */
- YYLTYPE yylsa[YYINITDEPTH];
- YYLTYPE *yyls = yylsa;
- YYLTYPE *yylsp;
- /* The locations where the error started and ended. */
- YYLTYPE yyerror_range[2];
- ]])[
-
#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)
- YYSIZE_T yystacksize = YYINITDEPTH;
-
- /* The variables used to return semantic value and location from the
- action routines. */
- YYSTYPE yyval;
-]b4_locations_if([ YYLTYPE yyloc;])[
-
/* The number of symbols on the RHS of the reduced rule.
Keep to zero when no symbol should be popped. */
int yylen = 0;
YYDPRINTF ((stderr, "Starting parse\n"));
- ]b4_push_if([pv = YYPVARS;])[
+]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
yyssp = yyss;
yyvsp = yyvs;
]b4_locations_if([[ yylsp = yyls;
-]b4_push_if([],[
#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])[
-]])
+#endif]])
+])
+[ ]b4_push_if([
+ if (yyps->yynew == 0)
+ {
+ goto gottoken;
+ }
+ yyps->yynew= 0;])
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
]])dnl
m4_ifdef([b4_at_dollar_used], [[ yylsp[0] = yylloc;
]])dnl
-[ ]b4_push_if([
- /* Initialize the locals to the current context. */
- yychar = pv->yychar;
- yylval = pv->yylval;
- yynerrs = pv->yynerrs;
- ]b4_locations_if([
- yylloc = pv->yylloc;])[
-
- yystate = pv->yystate;
- yyn = pv->yyn;
- yyresult = pv->yyresult;
- yyerrstatus = pv->yyerrstatus;
- yytoken = pv->yytoken;
-
- yyss = pv->yyss;
- yyssp = pv->yyssp;
-
- yyvs = pv->yyvs;
- yyvsp = pv->yyvsp;
-
- ]b4_locations_if([[ /* The location stack. */
- yyls = pv->yyls;
- yylsp = pv->yylsp;]])[
-
- yystacksize = pv->yystacksize;
- yylen = pv->yylen;
- yyval = pv->yyval;
- ]b4_locations_if([yyloc = pv->yyloc;])[
- if (pv->yynew == 0)
- {
- goto gottoken;
- }
- pv->yynew= 0;])[
+[
goto yysetstate;
/*------------------------------------------------------------.
(union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
if (! yyptr)
goto yyexhaustedlab;
- YYSTACK_RELOCATE (yyss);
- YYSTACK_RELOCATE (yyvs);
-]b4_locations_if([ YYSTACK_RELOCATE (yyls);])[
+ YYSTACK_RELOCATE (yyss_alloc, yyss);
+ YYSTACK_RELOCATE (yyvs_alloc, yyvs);
+]b4_locations_if([ YYSTACK_RELOCATE (yyls_alloc, yyls);])[
# undef YYSTACK_RELOCATE
if (yyss1 != ]b4_yyssa[)
YYSTACK_FREE (yyss1);
]b4_push_if([
YYDPRINTF ((stderr, "Return for a new token:\n"));
yyresult = YYPUSH_MORE;
- /* Initialize the locals to the current context. */
- pv->yychar = yychar;
- pv->yylval = yylval;
- pv->yynerrs = yynerrs;
- ]b4_locations_if([
- pv->yylloc = yylloc;])[
-
- pv->yystate = yystate;
- pv->yyn = yyn;
- pv->yyerrstatus = yyerrstatus;
- pv->yytoken = yytoken;
-
- pv->yyss = yyss;
- pv->yyssp = yyssp;
-
- pv->yyvs = yyvs;
- pv->yyvsp = yyvsp;
-
- ]b4_locations_if([[ /* The location stack. */
- pv->yyls = yyls;
- pv->yylsp = yylsp;]])[
-
- pv->yystacksize = yystacksize;
- pv->yylen = yylen;
- pv->yyval = yyval;
- ]b4_locations_if([pv->yyloc = yyloc;])[
goto yypushreturn;
gottoken:])[
YYDPRINTF ((stderr, "Reading a token: "));
/* If not already recovering from an error, report this error. */
if (!yyerrstatus)
{
- ++yynerrs;
+]b4_push_if([],[ ++yynerrs;])[
#if ! YYERROR_VERBOSE
yyerror (]b4_yyerror_args[YY_("syntax error"));
#else
if (yymsg != yymsgbuf)
YYSTACK_FREE (yymsg);
#endif
- ]b4_push_if([pv->yyresult = YYID (yyresult);])[
/* Make sure YYID is used. */
return YYID (yyresult);
]}
-b4_push_if([
-#ifdef YYPARSE_PARAM
-b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])
-#else /* ! YYPARSE_PARAM */
-b4_c_function_def([yyparse], [int], b4_parse_param)
-#endif
-{[
- struct yypvars *ctx = yypvarsinit ();
- int status;
- do {
- yychar_set (ctx, yylex ());
- yylval_set (ctx, yylval);
-#ifdef YYLTYPE_IS_TRIVIAL
- yylloc_set (ctx, yylloc);
-#endif
- status = yypushparse (ctx);
- } while (status == YYPUSH_MORE);
- free (ctx);
- return status;
-]}])
-
-
b4_epilogue
b4_defines_if(
-[@output @output_header_name@
+[@output b4_spec_defines_file
b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
# define YYLTYPE_IS_TRIVIAL 1
#endif
-]b4_push_if([struct ]b4_prefix[pvars;
-enum { YYPUSH_MORE = 4 };])[
]b4_pure_if([],
[extern YYLTYPE b4_prefix[]lloc;])
)dnl b4_locations_if
+]b4_push_if([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 };])[
+
m4_ifdef([b4_provides],
[[/* Copy the %provides blocks. */
-]b4_user_provides])[]dnl
+]b4_user_provides])[]
])dnl b4_defines_if
projects / bison.git / blobdiff