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* data/c.m4 (b4_token_enum): Always define the enum of tokens,

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even if empty.
* data/lalrl1.cc, data/glr.cc (parser::token_type): New.
* doc/bison.texinfo (Calc++ Scanner): Use it.
This commit is contained in:
Akim Demaille
2006-03-10 13:30:19 +00:00
parent 6e0f828781
commit c095d689c3
5 changed files with 24 additions and 9 deletions
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17
doc/bison.texinfo
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@@ -7326,10 +7326,11 @@ factor both as follows.
@comment file: calc++-driver.hh
@example
// Announce to Flex the prototype we want for lexing function, ...
# define YY_DECL \
int yylex (yy::calcxx_parser::semantic_type* yylval, \
yy::calcxx_parser::location_type* yylloc, \
calcxx_driver& driver)
# define YY_DECL \
yy::calcxx_parser::token_type \
yylex (yy::calcxx_parser::semantic_type* yylval, \
yy::calcxx_parser::location_type* yylloc, \
calcxx_driver& driver)
// ... and declare it for the parser's sake.
YY_DECL;
@end example
@@ -7621,6 +7622,10 @@ parser's to get the set of defined tokens.
<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>. */
# undef yywrap
# define yywrap() 1
/* By default yylex returns int, we use token_type.
Unfortunately yyterminate by default returns 0, which is
not of token_type. */
#define yyterminate() return token::END
%@}
@end example
@@ -7678,8 +7683,8 @@ It is convenient to use a typedef to shorten
%@{
typedef yy::calcxx_parser::token token;
%@}
[-+*/] return yytext[0];
/* Convert ints to the actual type of tokens. */
[-+*/] return yy::calcxx_parser::token_type (yytext[0]);
":=" return token::ASSIGN;
@{int@} @{
errno = 0;