diff options
Diffstat (limited to 'src/glsl/glcpp/glcpp-lex.l')
| -rw-r--r-- | src/glsl/glcpp/glcpp-lex.l | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l index 188e454664a..d5fb08707a9 100644 --- a/src/glsl/glcpp/glcpp-lex.l +++ b/src/glsl/glcpp/glcpp-lex.l @@ -137,14 +137,15 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? * 2. The skip_stack is NULL meaning that we've reached * the last #endif. * - * 3. The lexing_if bit is set. This indicates that we - * are lexing the expression following an "#if" of - * "#elif". Even inside an "#if 0" we need to lex this - * expression so the parser can correctly update the - * skip_stack state. + * 3. The lexing_directive bit is set. This indicates that we are + * lexing a pre-processor directive, (such as #if, #elif, or + * #else). For the #if and #elif directives we always need to + * parse the conditions, (even if otherwise within an #if + * 0). And for #else, we want to be able to generate an error + * if any garbage follows #else. */ if (YY_START == INITIAL || YY_START == SKIP) { - if (parser->lexing_if || + if (parser->lexing_directive || parser->skip_stack == NULL || parser->skip_stack->type == SKIP_NO_SKIP) { @@ -193,25 +194,25 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? <SKIP,INITIAL>{ {HASH}ifdef { - yyextra->lexing_if = 1; + yyextra->lexing_directive = 1; yyextra->space_tokens = 0; return HASH_IFDEF; } {HASH}ifndef { - yyextra->lexing_if = 1; + yyextra->lexing_directive = 1; yyextra->space_tokens = 0; return HASH_IFNDEF; } {HASH}if/[^_a-zA-Z0-9] { - yyextra->lexing_if = 1; + yyextra->lexing_directive = 1; yyextra->space_tokens = 0; return HASH_IF; } {HASH}elif/[^_a-zA-Z0-9] { - yyextra->lexing_if = 1; + yyextra->lexing_directive = 1; yyextra->space_tokens = 0; return HASH_ELIF; } @@ -348,7 +349,7 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? if (parser->commented_newlines) { BEGIN NEWLINE_CATCHUP; } - yyextra->lexing_if = 0; + yyextra->lexing_directive = 0; yylineno++; yycolumn = 0; return NEWLINE; @@ -357,7 +358,7 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? /* Handle missing newline at EOF. */ <INITIAL><<EOF>> { BEGIN DONE; /* Don't keep matching this rule forever. */ - yyextra->lexing_if = 0; + yyextra->lexing_directive = 0; return NEWLINE; } |