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|
%{
/*
* Copyright © 2010 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include "glcpp.h"
#include "glcpp-parse.h"
%}
%option reentrant noyywrap
%option extra-type="glcpp_parser_t *"
%x ST_DEFINE
%x ST_DEFINE_OBJ_OR_FUNC
%x ST_DEFINE_PARAMETER
%x ST_DEFINE_VALUE
%x ST_UNDEF
%x ST_UNDEF_END
SPACE [[:space:]]
NONSPACE [^[:space:]]
NEWLINE [\n]
HSPACE [ \t]
HASH ^{HSPACE}*#{HSPACE}*
IDENTIFIER [_a-zA-Z][_a-zA-Z0-9]*
TOKEN [^[:space:](),]+
%%
{HASH}undef{HSPACE}* {
BEGIN ST_UNDEF;
return UNDEF;
}
<ST_UNDEF>{IDENTIFIER} {
BEGIN ST_UNDEF_END;
yylval.str = xtalloc_strdup (yyextra, yytext);
return IDENTIFIER;
}
<ST_UNDEF_END>{HSPACE}*
<ST_UNDEF_END>\n {
BEGIN INITIAL;
}
/* We use the ST_DEFINE and ST_DEFVAL states so that we can
* pass a space token, (yes, a token for whitespace!), since
* the preprocessor specification requires distinguishing
* "#define foo()" from "#define foo ()".
*/
{HASH}define{HSPACE}* {
BEGIN ST_DEFINE;
return DEFINE;
}
<ST_DEFINE>{IDENTIFIER} {
BEGIN ST_DEFINE_OBJ_OR_FUNC;
yylval.str = xtalloc_strdup (yyextra, yytext);
return IDENTIFIER;
}
<ST_DEFINE_OBJ_OR_FUNC>\n {
BEGIN INITIAL;
return NEWLINE;
}
<ST_DEFINE_OBJ_OR_FUNC>{HSPACE}+ {
BEGIN ST_DEFINE_VALUE;
return SPACE;
}
<ST_DEFINE_OBJ_OR_FUNC>"(" {
BEGIN ST_DEFINE_PARAMETER;
return '(';
}
<ST_DEFINE_PARAMETER>{IDENTIFIER} {
yylval.str = xtalloc_strdup (yyextra, yytext);
return IDENTIFIER;
}
<ST_DEFINE_PARAMETER>"," {
return ',';
}
<ST_DEFINE_PARAMETER>")" {
BEGIN ST_DEFINE_VALUE;
return ')';
}
<ST_DEFINE_PARAMETER>{HSPACE}+
<ST_DEFINE_VALUE>{TOKEN} {
yylval.token.type = TOKEN;
yylval.token.value = xtalloc_strdup (yyextra, yytext);
return TOKEN;
}
<ST_DEFINE_VALUE>[(),] {
yylval.token.type = TOKEN;
yylval.token.value = xtalloc_strdup (yyextra, yytext);
return TOKEN;
}
<ST_DEFINE_VALUE>{HSPACE}+
<ST_DEFINE_VALUE>\n {
BEGIN INITIAL;
return NEWLINE;
}
{IDENTIFIER} {
int parameter_index;
yylval.str = xtalloc_strdup (yyextra, yytext);
switch (glcpp_parser_classify_token (yyextra, yylval.str,
¶meter_index))
{
case TOKEN_CLASS_ARGUMENT:
talloc_free (yylval.str);
/* We don't return a value here since the
* current token will be replaced by new
* tokens. */
glcpp_parser_push_expansion_argument (yyextra,
parameter_index);
break;
case TOKEN_CLASS_IDENTIFIER:
return IDENTIFIER;
break;
case TOKEN_CLASS_IDENTIFIER_FINALIZED:
return IDENTIFIER_FINALIZED;
break;
case TOKEN_CLASS_FUNC_MACRO:
return FUNC_MACRO;
break;
case TOKEN_CLASS_OBJ_MACRO:
return OBJ_MACRO;
break;
}
}
[(),] {
return yytext[0];
}
{TOKEN} {
yylval.token.type = TOKEN;
yylval.token.value = xtalloc_strdup (yyextra, yytext);
return TOKEN;
}
\n {
/* XXX: Printing here (rather than in a parser production)
* *and* frobbing a bit of the parser state here are both ugly
* things. But all my attempts to avoid this by returning a
* NEWLINE token here have led to even more ugly things. */
printf ("\n");
yyextra->just_printed_separator = 1;
}
{HSPACE}+
%%
|
