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glcpp: Add basic #line support (adapted from the main compiler).

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This commit is contained in:
Kenneth Graunke 2010-08-18 17:38:05 -07:00
parent 49dfa89873
commit 9cf62bdfeb
1 changed files with 31 additions and 0 deletions
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31
src/glsl/glcpp/glcpp-lex.l
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@ -100,6 +100,37 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]?
return OTHER;
}
{HASH}line{HSPACE}+{DECIMAL_INTEGER}{HSPACE}+{DECIMAL_INTEGER}{HSPACE}*$ {
/* Eat characters until the first digit is
* encountered
*/
char *ptr = yytext;
while (!isdigit(*ptr))
ptr++;
/* Subtract one from the line number because
* yylineno is zero-based instead of
* one-based.
*/
yylineno = strtol(ptr, &ptr, 0) - 1;
yylloc->source = strtol(ptr, NULL, 0);
}
{HASH}line{HSPACE}+{DECIMAL_INTEGER}{HSPACE}*$ {
/* Eat characters until the first digit is
* encountered
*/
char *ptr = yytext;
while (!isdigit(*ptr))
ptr++;
/* Subtract one from the line number because
* yylineno is zero-based instead of
* one-based.
*/
yylineno = strtol(ptr, &ptr, 0) - 1;
}
{HASH}ifdef/.*\n {
yyextra->lexing_if = 1;
yyextra->space_tokens = 0;