# ------------------
# A valid C macro name to use as a CPP header guard for FILE.
m4_define([b4_cpp_guard],
-[b4_tocpp(m4_defn([b4_prefix])/[$1])])
+[[YY_]b4_tocpp(m4_defn([b4_prefix])/[$1])[_INCLUDED]])
# b4_cpp_guard_open(FILE)
# b4_cpp_guard_close(FILE)
# ------------------------
-# Open/close CPP inclusion guards for FILE.
+# If FILE does not expand to nothing, open/close CPP inclusion guards for FILE.
m4_define([b4_cpp_guard_open],
+[m4_ifval(m4_quote($1),
[#ifndef b4_cpp_guard([$1])
-# define b4_cpp_guard([$1])])
+# define b4_cpp_guard([$1])])])
m4_define([b4_cpp_guard_close],
-[#endif b4_comment([!b4_cpp_guard([$1])])])
+[m4_ifval(m4_quote($1),
+[#endif b4_comment([!b4_cpp_guard([$1])])])])
## ---------------- ##
## Identification. ##
## ---------------- ##
-# b4_comment_(TEXT, OPEN, CONTINUE, END)
-# --------------------------------------
-# Put TEXT in comment. Avoid trailing spaces: don't indent empty lines.
-# Avoid adding indentation to the first line, as the indentation comes
-# from OPEN. That's why we don't patsubst([$1], [^\(.\)], [ \1]).
-#
-# Prefix all the output lines with PREFIX.
-m4_define([b4_comment_], [$2[]m4_bpatsubst([$1], [
-\(.\)], [
-$3\1])$4])
-
-
-# b4_comment(TEXT, [PREFIX])
-# --------------------------
-# Put TEXT in comment. Avoid trailing spaces: don't indent empty lines.
-# Avoid adding indentation to the first line, as the indentation comes
-# from "/*". That's why we don't patsubst([$1], [^\(.\)], [ \1]).
-#
-# Prefix all the output lines with PREFIX.
-m4_define([b4_comment],
-[b4_comment_([$1], [$2/* ], [$2 ], [$2 */])])
-
-
# b4_identification
# -----------------
# Depends on individual skeletons to define b4_pure_flag, b4_push_flag, or
## Pure/impure interfaces. ##
## ------------------------ ##
+# b4_lex_formals
+# --------------
+# All the yylex formal arguments.
+# b4_lex_param arrives quoted twice, but we want to keep only one level.
+m4_define([b4_lex_formals],
+[b4_pure_if([[[[YYSTYPE *yylvalp]], [[&yylval]]][]dnl
+b4_locations_if([, [[YYLTYPE *yyllocp], [&yylloc]]])])dnl
+m4_ifdef([b4_lex_param], [, ]b4_lex_param)])
+
+
+# b4_lex
+# ------
+# Call yylex.
+m4_define([b4_lex],
+[b4_function_call([yylex], [int], b4_lex_formals)])
+
+
# b4_user_args
# ------------
m4_define([b4_user_args],
# --------------------------------------------
# Without inducing a comparison warning from the compiler, check if the
# literal value LITERAL equals VALUE from table TABLE, which must have
-# TABLE_min and TABLE_max defined. YYID must be defined as an identity
-# function that suppresses warnings about constant conditions.
+# TABLE_min and TABLE_max defined.
m4_define([b4_table_value_equals],
[m4_if(m4_eval($3 < m4_indir([b4_]$1[_min])
|| m4_indir([b4_]$1[_max]) < $3), [1],
- [[YYID (0)]],
- [[((]$2[) == (]$3[))]])])
+ [[0]],
+ [(!!(($2) == ($3)))])])
## ---------##
# b4_integral_parser_table_define(TABLE-NAME, CONTENT, COMMENT)
# -------------------------------------------------------------
-# Define "yy<TABLE-NAME>" which contents is CONTENT.
+# Define "yy<TABLE-NAME>" whose contents is CONTENT.
m4_define([b4_integral_parser_table_define],
[m4_ifvaln([$3], [b4_comment([$3], [ ])])dnl
static const b4_int_type_for([$2]) yy$1[[]] =
# --------------
# Output the definition of the tokens (if there are) as enums.
m4_define([b4_token_enums],
-[b4_any_token_visible_if([[/* Tokens. */
+[b4_any_token_visible_if([[/* Token type. */
#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 ]b4_api_prefix[tokentype
{
]m4_join([,
break;])
-# b4_yydestruct_generate(FUNCTION-DECLARATOR)
-# -------------------------------------------
-# Generate the "yydestruct" function, which declaration is issued using
-# FUNCTION-DECLARATOR, which may be "b4_function_define".
-m4_define_default([b4_yydestruct_generate],
+# b4_yydestruct_define
+# --------------------
+# Define the "yydestruct" function.
+m4_define_default([b4_yydestruct_define],
[[/*-----------------------------------------------.
| Release the memory associated to this symbol. |
`-----------------------------------------------*/
-/*ARGSUSED*/
-]$1([yydestruct],
+]b4_function_define([yydestruct],
[static void],
[[const char *yymsg], [yymsg]],
[[int yytype], [yytype]],
])
-# b4_yy_symbol_print_generate(FUNCTION-DECLARATOR)
-# ------------------------------------------------
-# Generate the "yy_symbol_print" function, which declaration is issued using
-# FUNCTION-DECLARATOR, which may be "b4_function_define".
-m4_define_default([b4_yy_symbol_print_generate],
+# b4_yy_symbol_print_define
+# -------------------------
+# Define the "yy_symbol_print" function.
+m4_define_default([b4_yy_symbol_print_define],
[[
/*--------------------------------.
| Print this symbol on YYOUTPUT. |
`--------------------------------*/
-/*ARGSUSED*/
-]$1([yy_symbol_value_print],
+]b4_function_define([yy_symbol_value_print],
[static void],
[[FILE *yyoutput], [yyoutput]],
[[int yytype], [yytype]],
| Print this symbol on YYOUTPUT. |
`--------------------------------*/
-]$1([yy_symbol_print],
+]b4_function_define([yy_symbol_print],
[static void],
[[FILE *yyoutput], [yyoutput]],
[[int yytype], [yytype]],
## 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
+# b4_value_type_define
+# --------------------
+m4_define([b4_value_type_define],
+[[/* Value type. */
+#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED
]m4_ifdef([b4_stype],
-[[typedef union ]b4_union_name[
+[[typedef union ]b4_union_name[ ]b4_api_PREFIX[STYPE;
+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_IS_DECLARED 1
-#endif]b4_locations_if([[
+#endif
+]])
+
+# b4_location_type_define
+# -----------------------
+m4_define([b4_location_type_define],
+[[/* Location type. */
#if ! defined ]b4_api_PREFIX[LTYPE && ! defined ]b4_api_PREFIX[LTYPE_IS_DECLARED
-typedef struct ]b4_api_PREFIX[LTYPE
+typedef struct ]b4_api_PREFIX[LTYPE ]b4_api_PREFIX[LTYPE;
+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_IS_DECLARED 1
# define ]b4_api_PREFIX[LTYPE_IS_TRIVIAL 1
-#endif]])
+#endif
+]])
+
+
+# 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],
+[b4_value_type_define[]b4_locations_if([
+b4_location_type_define])
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. */
+[[/* Debug traces. */
]m4_if(b4_api_prefix, [yy],
[[#ifndef YYDEBUG
# define YYDEBUG ]b4_parse_trace_if([1], [0])[
# endif
# else /* ! defined YYDEBUG */
# define ]b4_api_PREFIX[DEBUG ]b4_parse_trace_if([1], [0])[
-# endif /* ! defined ]b4_api_PREFIX[DEBUG */
+# endif /* ! defined YYDEBUG */
#endif /* ! defined ]b4_api_PREFIX[DEBUG */]])[]dnl
])
#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N) \
do \
- if (YYID (N)) \
+ if (N) \
{ \
(Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
(Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
(Current).first_column = (Current).last_column = \
YYRHSLOC (Rhs, 0).last_column; \
} \
- while (YYID (0))
+ while (0)
#endif
]])
+
+# b4_yy_location_print_define
+# ---------------------------
+# Define YY_LOCATION_PRINT.
+m4_define([b4_yy_location_print_define],
+[b4_locations_if([[
+/* YY_LOCATION_PRINT -- Print the location on the stream.
+ This macro was not mandated originally: define only if we know
+ we won't break user code: when these are the locations we know. */
+
+#ifndef YY_LOCATION_PRINT
+# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
+
+/* Print *YYLOCP on YYO. Private, do not rely on its existence. */
+
+__attribute__((__unused__))
+]b4_function_define([yy_location_print_],
+ [static unsigned],
+ [[FILE *yyo], [yyo]],
+ [[YYLTYPE const * const yylocp], [yylocp]])[
+{
+ unsigned res = 0;
+ int end_col = 0 != yylocp->last_column ? yylocp->last_column - 1 : 0;
+ if (0 <= yylocp->first_line)
+ {
+ res += fprintf (yyo, "%d", yylocp->first_line);
+ if (0 <= yylocp->first_column)
+ res += fprintf (yyo, ".%d", yylocp->first_column);
+ }
+ if (0 <= yylocp->last_line)
+ {
+ if (yylocp->first_line < yylocp->last_line)
+ {
+ res += fprintf (yyo, "-%d", yylocp->last_line);
+ if (0 <= end_col)
+ res += fprintf (yyo, ".%d", end_col);
+ }
+ else if (0 <= end_col && yylocp->first_column < end_col)
+ res += fprintf (yyo, "-%d", end_col);
+ }
+ return res;
+ }
+
+# define YY_LOCATION_PRINT(File, Loc) \
+ yy_location_print_ (File, &(Loc))
+
+# else
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+# endif
+#endif]],
+[[/* This macro is provided for backward compatibility. */
+#ifndef YY_LOCATION_PRINT
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+#endif]])
+])
+
+# b4_yyloc_default
+# ----------------
+# Expand to a possible default value for yylloc.
+m4_define([b4_yyloc_default],
+[[
+# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
+ = { ]m4_join([, ],
+ m4_defn([b4_location_initial_line]),
+ m4_defn([b4_location_initial_column]),
+ m4_defn([b4_location_initial_line]),
+ m4_defn([b4_location_initial_column]))[ }
+# endif
+]])
projects / bison.git / blobdiff