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glsl: Allow for multiple version statements.

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This commit is contained in:
Michal Krol 2009-06-15 09:50:48 +02:00
parent 55f75c13f0
commit b4e92367f3
1 changed files with 72 additions and 64 deletions
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136
src/glsl/pp/sl_pp_version.c
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@ -59,90 +59,98 @@ sl_pp_version(const struct sl_pp_token_info *input,
unsigned int *tokens_eaten)
{
unsigned int i = 0;
int found_hash = 0;
int found_version = 0;
int found_number = 0;
/* Default values if `#version' is not present. */
*version = 110;
*tokens_eaten = 0;
/* Skip whitespace and newlines and seek for hash. */
while (!found_hash) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
case SL_PP_NEWLINE:
i++;
break;
/* There can be multiple `#version' directives present.
* Accept the value of the last one.
*/
for (;;) {
int found_hash = 0;
int found_version = 0;
int found_number = 0;
int found_end = 0;
case SL_PP_HASH:
i++;
found_hash = 1;
break;
/* Skip whitespace and newlines and seek for hash. */
while (!found_hash) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
case SL_PP_NEWLINE:
i++;
break;
default:
return 0;
}
}
case SL_PP_HASH:
i++;
found_hash = 1;
break;
/* Skip whitespace and seek for `version'. */
while (!found_version) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
i++;
break;
case SL_PP_IDENTIFIER:
if (strcmp(input[i].data.identifier, "version")) {
default:
return 0;
}
i++;
found_version = 1;
break;
default:
return 0;
}
}
/* Skip whitespace and seek for version number. */
while (!found_number) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
i++;
break;
/* Skip whitespace and seek for `version'. */
while (!found_version) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
i++;
break;
case SL_PP_NUMBER:
if (_parse_integer(input[i].data.number, version)) {
case SL_PP_IDENTIFIER:
if (strcmp(input[i].data.identifier, "version")) {
return 0;
}
i++;
found_version = 1;
break;
default:
return 0;
}
}
/* Skip whitespace and seek for version number. */
while (!found_number) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
i++;
break;
case SL_PP_NUMBER:
if (_parse_integer(input[i].data.number, version)) {
/* Expected version number. */
return -1;
}
i++;
found_number = 1;
break;
default:
/* Expected version number. */
return -1;
}
i++;
found_number = 1;
break;
default:
/* Expected version number. */
return -1;
}
}
/* Skip whitespace and seek for either newline or eof. */
for (;;) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
i++;
break;
/* Skip whitespace and seek for either newline or eof. */
while (!found_end) {
switch (input[i].token) {
case SL_PP_WHITESPACE:
i++;
break;
case SL_PP_NEWLINE:
case SL_PP_EOF:
i++;
*tokens_eaten = i;
return 0;
case SL_PP_NEWLINE:
case SL_PP_EOF:
i++;
*tokens_eaten = i;
found_end = 1;
break;
default:
/* Expected end of line. */
return -1;
default:
/* Expected end of line. */
return -1;
}
}
}