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4c22f4dba7
Ken reminded me of a couple cases that I should be testing. These are the non-nestedness of things that look like nested comments as well as potentially tricky things like "/*/" and "/*/*/". The (non) nested comment case was not working in the case of the comment terminator with multiple '*' characters. We fix this by not considering a '*' as the "non-slash" to terminate a sequence of '*' characters within the comment. We also fix the final match of the terminator to use '+' rather than '*' to require the presence of a final '*' character in the comment terminator. |
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| main | ||
| tests | ||
| .gitignore | ||
| glcpp-lex.l | ||
| glcpp-parse.y | ||
| glcpp.c | ||
| glcpp.h | ||
| hash_table.c | ||
| hash_table.h | ||
| Makefile | ||
| README | ||
| xtalloc.c | ||
glcpp -- GLSL "C" preprocessor This is a simple preprocessor designed to provide the preprocessing needs of the GLSL language. The requirements for this preprocessor are specified in the GLSL 1.30 specification availble from: http://www.opengl.org/registry/doc/GLSLangSpec.Full.1.30.08.pdf This specification is not precise on some semantics, (for example, #define and #if), defining these merely "as is standard for C++ preprocessors". To fill in these details, I've been using the C99 standard (for which I had a convenient copy) as available from: http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf Known limitations ----------------- Macro invocations cannot include embedded newlines. The __LINE__, __FILE__, and __VERSION__ macros are not yet supported. The argument of the 'defined' operator cannot yet include enclosing parentheses. The #error, #pragma, #extension, #version, and #line macros are not yet supported. A file that ends with a function-like macro name as the last non-whitespace token will result in a parse error, (where it should be passed through as is).