X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0ce615753edfd7d1f8f1fe8670d4354b3d59d049..cf499cff31eabd04e37107484647bdd453137d1d:/data/bison.m4?ds=sidebyside diff --git a/data/bison.m4 b/data/bison.m4 index fa8b043a..09287214 100644 --- a/data/bison.m4 +++ b/data/bison.m4 @@ -255,9 +255,9 @@ m4_define([b4_integral_parser_tables_map], STATE-NUM.]]) $1([defact], [b4_defact], - [[YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE -does not specify something else to do. Zero means the default is an -error.]]) + [[YYDEFACT[S] -- default reduction number in state S. Performed when +YYTABLE does not specify something else to do. Zero means the default +is an error.]]) $1([pgoto], [b4_pgoto], [[YYPGOTO[NTERM-NUM].]]) @@ -266,8 +266,7 @@ $1([defgoto], [b4_defgoto], [[YYDEFGOTO[NTERM-NUM].]]) $1([table], [b4_table], [[YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If positive, shift that token. If negative, reduce the rule which -number is the opposite. If zero, do what YYDEFACT says. -If YYTABLE_NINF, syntax error.]]) +number is the opposite. If YYTABLE_NINF, syntax error.]]) $1([check], [b4_check]) @@ -333,7 +332,6 @@ m4_define([b4_$3_if], # Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise. b4_define_flag_if([defines]) # Whether headers are requested. 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. @@ -356,7 +354,7 @@ m4_define([b4_symbol_], # undefined. If FIELD = id, prepend the prefix. m4_define([b4_symbol], [m4_case([$2], - [id], [m4_do([b4_percent_define_get([token.prefix])], + [id], [m4_do([b4_percent_define_get([api.tokens.prefix])], [b4_symbol_([$1], [id])])], [b4_symbol_($@)])]) @@ -507,8 +505,8 @@ b4_define_user_code([stype]) # but is not used by Bison (as recorded by macros in the namespace # BISON-NAMESPACE). # -# USER-LIST must expand to a list specifying all grammar occurrences of all -# names of type WHAT. Each item in the list must be a triplet specifying one +# USER-LIST must expand to a list specifying all user occurrences of all names +# of type WHAT. Each item in the list must be a triplet specifying one # occurrence: name, start boundary, and end boundary. Empty string names are # fine. An empty list is fine. # @@ -552,6 +550,20 @@ m4_popdef([b4_start])dnl m4_popdef([b4_end])dnl ])]) + + +## --------------------- ## +## b4_percent_define_*. ## +## --------------------- ## + + +# b4_percent_define_use(VARIABLE) +# ------------------------------- +# Declare that VARIABLE was used. +m4_define([b4_percent_define_use], +[m4_define([b4_percent_define_bison_variables(]$1[)])dnl +]) + # b4_percent_define_get(VARIABLE) # ------------------------------- # Mimic muscle_percent_define_get in ../src/muscle_tab.h exactly. That is, if @@ -563,7 +575,7 @@ m4_popdef([b4_end])dnl # # b4_percent_define_get([[foo]]) m4_define([b4_percent_define_get], -[m4_define([b4_percent_define_bison_variables(]$1[)])dnl +[b4_percent_define_use([$1])dnl m4_ifdef([b4_percent_define(]$1[)], [m4_indir([b4_percent_define(]$1[)])])]) # b4_percent_define_get_loc(VARIABLE) @@ -614,7 +626,7 @@ m4_define([b4_percent_define_get_syncline], # b4_percent_define_ifdef([[foo]], [[it's defined]], [[it's undefined]]) m4_define([b4_percent_define_ifdef], [m4_ifdef([b4_percent_define(]$1[)], - [m4_define([b4_percent_define_bison_variables(]$1[)])$2], + [b4_percent_define_use([$1])$2], [$3])]) @@ -669,28 +681,16 @@ m4_define([b4_percent_define_default], # b4_percent_define_if_define(VARIABLE) # ------------------------------------- # Define b4_VARIABLE_if that executes its $1 or $2 depending whether -# VARIABLE was %defined. +# VARIABLE was %defined. The characters `.' and `-' in VARIABLE are mapped +# to `_'. m4_define([b4_percent_define_if_define_], -[m4_define([b4_$1_if], [b4_percent_define_flag_if([$1], [$2], [$3])])]) +[m4_define(m4_bpatsubst([b4_$1_if], [[-.]], [_]), + [b4_percent_define_flag_if([$1], [$2], [$3])])]) m4_define([b4_percent_define_if_define], [b4_percent_define_default([[$1]], [[false]]) b4_percent_define_if_define_([$1], $[1], $[2])]) -# b4_assert_if([IF-ASSERTIONS-ARE-USED], [IF-NOT]) -# b4_debug_if([IF-DEBUG-TRACES-ARE-ENABLED], [IF-NOT]) -# b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT]) -# b4_lex_symbol_if([IF-YYLEX-RETURNS-A-COMPLETE-SYMBOL], [IF-NOT]) -# b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT]) -# ---------------------------------------------- -b4_percent_define_if_define([assert]) -b4_percent_define_if_define([debug]) -b4_percent_define_if_define([error_verbose]) -b4_percent_define_if_define([lex_symbol]) -b4_percent_define_if_define([variant]) - - - # b4_percent_define_check_values(VALUES) # -------------------------------------- # Mimic muscle_percent_define_check_values in ../src/muscle_tab.h exactly @@ -722,7 +722,11 @@ m4_define([_b4_percent_define_check_values], [b4_complain_at(b4_percent_define_get_loc([$1]), [[invalid value for %%define variable `%s': `%s']], [$1], - m4_dquote(m4_indir([b4_percent_define(]$1[)])))])dnl + m4_dquote(m4_indir([b4_percent_define(]$1[)]))) + m4_foreach([b4_value], m4_dquote(m4_shift($@)), + [b4_complain_at(b4_percent_define_get_loc([$1]), + [[accepted value: `%s']], + m4_dquote(b4_value))])])dnl m4_popdef([b4_good_value])], [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_check_values]], [$1])])]) @@ -761,11 +765,39 @@ m4_define([b4_percent_code_ifdef], [$3])]) +## ------------------ ## +## Common variables. ## +## ------------------ ## + # Default values for %define. # --------------------------- -# If the %token.prefix, it is empty. -m4_percent_define_default([[token.prefix]], [[]]) +# If the api.tokens.prefix, it is empty. +m4_percent_define_default([[api.tokens.prefix]], [[]]) +# b4_parse_assert_if([IF-ASSERTIONS-ARE-USED], [IF-NOT]) +# b4_parse_trace_if([IF-DEBUG-TRACES-ARE-ENABLED], [IF-NOT]) +# b4_lex_symbol_if([IF-YYLEX-RETURNS-A-COMPLETE-SYMBOL], [IF-NOT]) +# b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT]) +# ---------------------------------------------- +b4_percent_define_if_define([lex_symbol]) +b4_percent_define_if_define([locations]) # Whether locations are tracked. +b4_percent_define_if_define([parse.assert]) +b4_percent_define_if_define([parse.trace]) +b4_percent_define_if_define([variant]) + + +# b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT]) +# ------------------------------------------------------ +# Map %define parse.error "(simple|verbose)" to b4_error_verbose_if and +# b4_error_verbose_flag. +b4_percent_define_default([[parse.error]], [[simple]]) +b4_percent_define_check_values([[[[parse.error]], + [[simple]], [[verbose]]]]) +m4_define([b4_error_verbose_flag], + m4_case(b4_percent_define_get([[parse.error]]), + [simple], [[0]], + [verbose], [[1]])) +b4_define_flag_if([error_verbose]) ## ----------------------------------------------------------- ##