mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2025-12-28 08:10:09 +01:00
cd27e6413a
This isn't ideal for two reasons: 1. There's a bunch of stateful redundancy in the lexer that should be cleaned up. 2. The hash table does not provide a mechanism to delete an entry, so we waste memory to add a new NULL entry in front of the existing entry with the same key. But this does at least work, (it passes the recently added undef test case).
93 lines
2.1 KiB
Text
93 lines
2.1 KiB
Text
%{
|
|
/*
|
|
* 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_UNDEF
|
|
|
|
SPACE [[:space:]]
|
|
NONSPACE [^[:space:]]
|
|
NEWLINE [\n]
|
|
HSPACE [ \t]
|
|
HASH ^{HSPACE}*#
|
|
IDENTIFIER [_a-zA-Z][_a-zA-Z0-9]*
|
|
TOKEN {NONSPACE}+
|
|
|
|
%%
|
|
|
|
{HASH}define{HSPACE}* {
|
|
BEGIN ST_DEFINE;
|
|
return DEFINE;
|
|
}
|
|
|
|
<ST_DEFINE>{IDENTIFIER} {
|
|
yylval.str = xtalloc_strdup (yyextra, yytext);
|
|
return IDENTIFIER;
|
|
}
|
|
|
|
<ST_DEFINE>{TOKEN} {
|
|
yylval.str = xtalloc_strdup (yyextra, yytext);
|
|
return TOKEN;
|
|
}
|
|
|
|
<ST_DEFINE>\n {
|
|
BEGIN INITIAL;
|
|
return NEWLINE;
|
|
}
|
|
|
|
<ST_DEFINE>{SPACE}+
|
|
|
|
{HASH}undef{HSPACE}* {
|
|
BEGIN ST_UNDEF;
|
|
return UNDEF;
|
|
}
|
|
|
|
<ST_UNDEF>{IDENTIFIER} {
|
|
yylval.str = xtalloc_strdup (yyextra, yytext);
|
|
return IDENTIFIER;
|
|
}
|
|
|
|
<ST_UNDEF>\n {
|
|
BEGIN INITIAL;
|
|
return NEWLINE;
|
|
}
|
|
|
|
<ST_UNDEF>{SPACE}+
|
|
|
|
/* Anything we don't specifically recognize is a stream of tokens */
|
|
{NONSPACE}+ {
|
|
yylval.str = xtalloc_strdup (yyextra, yytext);
|
|
return TOKEN;
|
|
}
|
|
|
|
%%
|