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c++: do not export YYTOKEN_TABLE and YYERROR_VERBOSE.

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* src/output.c (prepare_symbols): Do not define b4_token_table.
(prepare): Define b4_token_table_flag.
* data/bison.m4 (b4_token_table_if): New.
Arm it when error-verbose.
* data/glr.c, data/yacc.c (YYTOKEN_TABLE): Remove.
Use m4.
* data/lalr1.cc: Likewise.
(YYERROR_VERBOSE): Remove.
* NEWS, doc/bison.texi: Document this.
This commit is contained in:
Akim Demaille
2012-06-25 16:52:30 +02:00
parent 9bcffa0c13
commit 258cddbc36
7 changed files with 42 additions and 55 deletions
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22
data/bison.m4
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@@ -233,9 +233,9 @@ m4_define([b4_define_flag_if],
# _b4_define_flag_if($1, $2, FLAG)
# --------------------------------
# This macro works around the impossibility to define macros
# inside macros, because issuing `[$1]' is not possible in M4 :(.
# This sucks hard, GNU M4 should really provide M5 like $$1.
# Work around the impossibility to define macros inside macros,
# because issuing `[$1]' is not possible in M4. GNU M4 should provide
# $$1 a la M5/TeX.
m4_define([_b4_define_flag_if],
[m4_if([$1$2], $[1]$[2], [],
[m4_fatal([$0: Invalid arguments: $@])])dnl
@@ -246,12 +246,16 @@ m4_define([b4_$3_if],
# b4_FLAG_if(IF-TRUE, IF-FALSE)
# -----------------------------
# Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise.
b4_define_flag_if([defines]) # Whether headers are requested.
b4_define_flag_if([error_verbose]) # Whether error are verbose.
b4_define_flag_if([glr]) # Whether a GLR parser is requested.
b4_define_flag_if([locations]) # Whether locations are tracked.
b4_define_flag_if([nondeterministic]) # Whether conflicts should be handled.
b4_define_flag_if([yacc]) # Whether POSIX Yacc is emulated.
b4_define_flag_if([defines]) # Whether headers are requested.
b4_define_flag_if([error_verbose]) # Whether error are verbose.
b4_define_flag_if([glr]) # Whether a GLR parser is requested.
b4_define_flag_if([locations]) # Whether locations are tracked.
b4_define_flag_if([nondeterministic]) # Whether conflicts should be handled.
b4_define_flag_if([token_table]) # Whether yytoken_table is demanded.
b4_define_flag_if([yacc]) # Whether POSIX Yacc is emulated.
# yytoken_table is needed to support verbose errors.
b4_error_verbose_if([m4_define([b4_token_table_flag], [1])])
## ------------------------- ##