# Java language support for Bison
-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2012 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
]) */])
+# b4_list2(LIST1, LIST2)
+# --------------------------
+# Join two lists with a comma if necessary.
+m4_define([b4_list2],
+ [$1[]m4_ifval(m4_quote($1), [m4_ifval(m4_quote($2), [[, ]])])[]$2])
+
+
+# b4_percent_define_get3(DEF, PRE, POST, NOT)
+# -------------------------------------------
+# Expand to the value of DEF surrounded by PRE and POST if it's %define'ed,
+# otherwise NOT.
+m4_define([b4_percent_define_get3],
+ [m4_ifval(m4_quote(b4_percent_define_get([$1])),
+ [$2[]b4_percent_define_get([$1])[]$3], [$4])])
+
+
+
# b4_flag_value(BOOLEAN-FLAG)
# ---------------------------
m4_define([b4_flag_value], [b4_flag_if([$1], [true], [false])])
[b4_percent_define_flag_if([abstract], [$1], [$2])])
+# b4_final_if(TRUE, FALSE)
+# ---------------------------
+b4_percent_define_default([[final]], [[false]])
+m4_define([b4_final_if],
+[b4_percent_define_flag_if([final], [$1], [$2])])
+
+
+# b4_strictfp_if(TRUE, FALSE)
+# ---------------------------
+b4_percent_define_default([[strictfp]], [[false]])
+m4_define([b4_strictfp_if],
+[b4_percent_define_flag_if([strictfp], [$1], [$2])])
+
+
# b4_lexer_if(TRUE, FALSE)
# ------------------------
m4_define([b4_lexer_if],
# b4_identification
# -----------------
m4_define([b4_identification],
-[/** Always <tt>true</tt>, identifies Bison output. */
- public static final boolean bison = true;
-
- /** Version number for the Bison executable that generated this parser. */
+[ /** Version number for the Bison executable that generated this parser. */
public static final String bisonVersion = "b4_version";
/** Name of the skeleton that generated this parser. */
m4_define([b4_int_type],
[m4_if(b4_ints_in($@, [-128], [127]), [1], [byte],
b4_ints_in($@, [-32768], [32767]), [1], [short],
- [int])])
+ [int])])
# b4_int_type_for(NAME)
# ---------------------
m4_define([b4_null], [null])
+# b4_typed_parser_table_define(TYPE, NAME, DATA, COMMENT)
+# -------------------------------------------------------
+m4_define([b4_typed_parser_table_define],
+[m4_ifval([$4], [b4_comment([$4])
+ ])dnl
+[private static final ]$1[ yy$2_[] = yy$2_init();
+ private static final ]$1[[] yy$2_init()
+ {
+ return new ]$1[[]
+ {
+ ]$3[
+ };
+ }]])
+
+
+# b4_integral_parser_table_define(NAME, DATA, COMMENT)
+#-----------------------------------------------------
+m4_define([b4_integral_parser_table_define],
+[b4_typed_parser_table_define([b4_int_type_for([$2])], [$1], [$2], [$3])])
+
+
## ------------------------- ##
## Assigning token numbers. ##
## ------------------------- ##
# ---------------------------------------
# Output the definition of this token as an enum.
m4_define([b4_token_enum],
-[ /** Token number, to be returned by the scanner. */
- public static final int $1 = $2;
+[ /** Token number, to be returned by the scanner. */
+ static final int b4_percent_define_get([api.tokens.prefix])$1 = $2;
])
# -----------------------------------------------------
# Output the definition of the tokens (if there are) as enums.
m4_define([b4_token_enums],
-[m4_if([$@], [[]], [],
+[m4_if([$#$1], [1], [],
[/* Tokens. */
m4_map([b4_token_enum], [$@])])
])
break;
])
+# b4_predicate_case(LABEL, CONDITIONS)
+# ------------------------------------
+m4_define([b4_predicate_case], [ case $1:
+ if (! ($2)) YYERROR;
+ break;
+ ])
+
## ---------------- ##
## Default values. ##
## ---------------- ##
m4_define([b4_yystype], [b4_percent_define_get([[stype]])])
-b4_percent_define_default([[stype]], [[Object]])])
+b4_percent_define_default([[stype]], [[Object]])
-m4_define_default([[b4_prefix]], [[YY]])])
-b4_percent_define_default([[parser_class_name]], [b4_prefix[]Parser])])
+# %name-prefix
+m4_define_default([b4_prefix], [[YY]])
+
+b4_percent_define_default([[parser_class_name]], [b4_prefix[]Parser])
m4_define([b4_parser_class_name], [b4_percent_define_get([[parser_class_name]])])
-b4_percent_define_default([[lex_throws]], [[java.io.IOException]])])
+b4_percent_define_default([[lex_throws]], [[java.io.IOException]])
m4_define([b4_lex_throws], [b4_percent_define_get([[lex_throws]])])
-b4_percent_define_default([[throws]], [b4_lex_throws])])
+b4_percent_define_default([[throws]], [])
m4_define([b4_throws], [b4_percent_define_get([[throws]])])
-b4_percent_define_default([[location_type]], [Location])])
+b4_percent_define_default([[init_throws]], [])
+m4_define([b4_init_throws], [b4_percent_define_get([[init_throws]])])
+
+b4_percent_define_default([[location_type]], [Location])
m4_define([b4_location_type], [b4_percent_define_get([[location_type]])])
-b4_percent_define_default([[position_type]], [Position])])
+b4_percent_define_default([[position_type]], [Position])
m4_define([b4_position_type], [b4_percent_define_get([[position_type]])])
# it to be single quoted. Same for b4_parse_param.
# TODO: should be in bison.m4
-m4_define_default([b4_lex_param], [[]]))
-m4_define([b4_lex_param], b4_lex_param))
-m4_define([b4_parse_param], b4_parse_param))
+m4_define_default([b4_lex_param], [[]])
+m4_define([b4_lex_param], b4_lex_param)
+m4_define([b4_parse_param], b4_parse_param)
# b4_lex_param_decl
-# -------------------
+# -----------------
# Extra formal arguments of the constructor.
m4_define([b4_lex_param_decl],
[m4_ifset([b4_lex_param],
[b4_remove_comma([$1],
- b4_param_decls(b4_lex_param))],
- [$1])])
+ b4_param_decls(b4_lex_param))],
+ [$1])])
m4_define([b4_param_decls],
- [m4_map([b4_param_decl], [$@])])
+ [m4_map([b4_param_decl], [$@])])
m4_define([b4_param_decl], [, $1])
-m4_define([b4_remove_comma], [m4_ifval($1, [$1, ], [])m4_shift2($@)])
+m4_define([b4_remove_comma], [m4_ifval(m4_quote($1), [$1, ], [])m4_shift2($@)])
m4_define([b4_parse_param_decl],
[m4_ifset([b4_parse_param],
[b4_remove_comma([$1],
- b4_param_decls(b4_parse_param))],
- [$1])])
+ b4_param_decls(b4_parse_param))],
+ [$1])])
# b4_lex_param_call
-# -------------------
+# -----------------
# Delegating the lexer parameters to the lexer constructor.
m4_define([b4_lex_param_call],
[m4_ifset([b4_lex_param],
- [b4_remove_comma([$1],
- b4_param_calls(b4_lex_param))],
- [$1])])
+ [b4_remove_comma([$1],
+ b4_param_calls(b4_lex_param))],
+ [$1])])
m4_define([b4_param_calls],
- [m4_map([b4_param_call], [$@])])
+ [m4_map([b4_param_call], [$@])])
m4_define([b4_param_call], [, $2])
# Extra initialisations of the constructor.
m4_define([b4_parse_param_cons],
[m4_ifset([b4_parse_param],
- [b4_constructor_calls(b4_parse_param)])])
+ [b4_constructor_calls(b4_parse_param)])])
m4_define([b4_constructor_calls],
- [m4_map([b4_constructor_call], [$@])])
+ [m4_map([b4_constructor_call], [$@])])
m4_define([b4_constructor_call],
- [this.$2 = $2;
- ])
+ [this.$2 = $2;
+ ])
# Extra instance variables.
m4_define([b4_parse_param_vars],
[m4_ifset([b4_parse_param],
- [
+ [
/* User arguments. */
b4_var_decls(b4_parse_param)])])
m4_define([b4_var_decls],
- [m4_map_sep([b4_var_decl], [
+ [m4_map_sep([b4_var_decl], [
], [$@])])
m4_define([b4_var_decl],
- [ protected final $1;])
+ [ protected final $1;])
# -----------------------
# Expand to either an empty string or "throws THROWS".
m4_define([b4_maybe_throws],
- [m4_ifval($1, [throws $1])])
+ [m4_ifval($1, [throws $1])])
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