X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/527187137ac6314b86246bca71cb996203b4fa10..3eb4f1a3e62807125a815dc572da9204b5b51865:/data/c.m4 diff --git a/data/c.m4 b/data/c.m4 index 0d30a496..adf5d4f1 100644 --- a/data/c.m4 +++ b/data/c.m4 @@ -100,9 +100,6 @@ m4_define([b4_identification], /* Pull parsers. */ #define YYPULL ]b4_pull_flag])[ - -/* Using locations. */ -#define YYLSP_NEEDED ]b4_locations_if([1], [0])[ ]]) @@ -110,11 +107,24 @@ m4_define([b4_identification], ## Default values. ## ## ---------------- ## +# b4_api_prefix, b4_api_PREFIX +# ---------------------------- +# Corresponds to %define api.prefix +b4_percent_define_default([[api.prefix]], [[yy]]) +m4_define([b4_api_prefix], +[b4_percent_define_get([[api.prefix]])]) +m4_define([b4_api_PREFIX], +[m4_toupper(b4_api_prefix)]) + + +# b4_prefix +# --------- +# If the %name-prefix is not given, it is api.prefix. +m4_define_default([b4_prefix], [b4_api_prefix]) + # If the %union is not named, its name is YYSTYPE. -m4_define_default([b4_union_name], [YYSTYPE]) +m4_define_default([b4_union_name], [b4_api_PREFIX[]STYPE]) -# If the %name-prefix is not given, it is yy. -m4_define_default([b4_prefix], [yy]) ## ------------------------ ## ## Pure/impure interfaces. ## @@ -270,18 +280,18 @@ m4_define([b4_token_enum], # Output the definition of the tokens (if there are) as enums. m4_define([b4_token_enums], [m4_if([$#$1], [1], [], -[/* Tokens. */ -#ifndef YYTOKENTYPE -# define YYTOKENTYPE +[[/* Tokens. */ +#ifndef ]b4_api_PREFIX[TOKENTYPE +# define ]b4_api_PREFIX[TOKENTYPE /* Put the tokens into the symbol table, so that GDB and other debuggers know about them. */ - enum yytokentype { -m4_map_sep([ b4_token_enum], [, + enum ]b4_api_prefix[tokentype { +]m4_map_sep([ b4_token_enum], [, ], [$@]) - }; + };[ #endif -])]) +]])]) # b4_token_enums_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER) @@ -567,3 +577,102 @@ b4_locations_if([, yylocationp])[]b4_user_args[); YYFPRINTF (yyoutput, ")"); }]dnl ]) + +## -------------- ## +## Declarations. ## +## -------------- ## + +# b4_declare_yylstype +# ------------------- +# Declarations that might either go into the header (if --defines) or +# in the parser body. Declare YYSTYPE/YYLTYPE, and yylval/yylloc. +m4_define([b4_declare_yylstype], +[[#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED +]m4_ifdef([b4_stype], +[[typedef union ]b4_union_name[ +{ +]b4_user_stype[ +} ]b4_api_PREFIX[STYPE; +# define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1]], +[m4_if(b4_tag_seen_flag, 0, +[[typedef int ]b4_api_PREFIX[STYPE; +# define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1]])])[ +# define ]b4_api_prefix[stype ]b4_api_PREFIX[STYPE /* obsolescent; will be withdrawn */ +# define ]b4_api_PREFIX[STYPE_IS_DECLARED 1 +#endif]b4_locations_if([[ + +#if ! defined ]b4_api_PREFIX[LTYPE && ! defined ]b4_api_PREFIX[LTYPE_IS_DECLARED +typedef struct ]b4_api_PREFIX[LTYPE +{ + int first_line; + int first_column; + int last_line; + int last_column; +} ]b4_api_PREFIX[LTYPE; +# define ]b4_api_prefix[ltype ]b4_api_PREFIX[LTYPE /* obsolescent; will be withdrawn */ +# define ]b4_api_PREFIX[LTYPE_IS_DECLARED 1 +# define ]b4_api_PREFIX[LTYPE_IS_TRIVIAL 1 +#endif]]) + +b4_pure_if([], [[extern ]b4_api_PREFIX[STYPE ]b4_prefix[lval; +]b4_locations_if([[extern ]b4_api_PREFIX[LTYPE ]b4_prefix[lloc;]])])[]dnl +]) + +# b4_YYDEBUG_define +# ------------------ +m4_define([b4_YYDEBUG_define], +[[/* Enabling traces. */ +]m4_if(b4_api_prefix, [yy], +[[#ifndef YYDEBUG +# define YYDEBUG ]b4_parse_trace_if([1], [0])[ +#endif]], +[[#ifndef ]b4_api_PREFIX[DEBUG +# if defined YYDEBUG +#if YYDEBUG +# define ]b4_api_PREFIX[DEBUG 1 +# else +# define ]b4_api_PREFIX[DEBUG 0 +# endif +# else /* ! defined YYDEBUG */ +# define ]b4_api_PREFIX[DEBUG ]b4_parse_trace_if([1], [0])[ +# endif /* ! defined ]b4_api_PREFIX[DEBUG */ +#endif /* ! defined ]b4_api_PREFIX[DEBUG */]])[]dnl +]) + +# b4_declare_yydebug +# ------------------ +m4_define([b4_declare_yydebug], +[b4_YYDEBUG_define[ +#if ]b4_api_PREFIX[DEBUG +extern int ]b4_prefix[debug; +#endif][]dnl +]) + +# b4_yylloc_default_define +# ------------------------ +# Define YYLLOC_DEFAULT. +m4_define([b4_yylloc_default_define], +[[/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. + If N is 0, then set CURRENT to the empty location which ends + the previous symbol: RHS[0] (always defined). */ + +#ifndef YYLLOC_DEFAULT +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + do \ + if (YYID (N)) \ + { \ + (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ + (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ + } \ + else \ + { \ + (Current).first_line = (Current).last_line = \ + YYRHSLOC (Rhs, 0).last_line; \ + (Current).first_column = (Current).last_column = \ + YYRHSLOC (Rhs, 0).last_column; \ + } \ + while (YYID (0)) +#endif +]])