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Carl Worth be0e2e9b2a Fix bug (and add tests) for a function-like macro defined as itself. 
This case worked previously, but broke in the recent rewrite of
function- like macro expansion. The recursion was still terminated
correctly, but any parenthesized expression after the macro name was
still being swallowed even though the identifier was not being
expanded as a macro.

The fix is to notice earlier that the identifier is an
already-expanding macro. We let the lexer know this through the
classify_token function so that an already-expanding macro is lexed as
an identifier, not a FUNC_MACRO.
2010-05-19 07:29:22 -07:00
main Add hash table implementation from glsl2 project. 2010-05-10 13:36:26 -07:00
tests Fix bug (and add tests) for a function-like macro defined as itself. 2010-05-19 07:29:22 -07:00
.gitignore Add a very simple test for the pre-processor. 2010-05-10 16:21:10 -07:00
glcpp-lex.l Rewrite macro handling to support function-like macro invocation in macro values 2010-05-18 22:10:04 -07:00
glcpp-parse.y Fix bug (and add tests) for a function-like macro defined as itself. 2010-05-19 07:29:22 -07:00
glcpp.c Fix defines involving both literals and other defined macros. 2010-05-12 12:25:34 -07:00
glcpp.h Rewrite macro handling to support function-like macro invocation in macro values 2010-05-18 22:10:04 -07:00
hash_table.c Add hash table implementation from glsl2 project. 2010-05-10 13:36:26 -07:00
hash_table.h Add hash table implementation from glsl2 project. 2010-05-10 13:36:26 -07:00
Makefile Provide implementation for macro arguments containing parentheses. 2010-05-14 16:53:52 -07:00
README Add README file describing glcpp. 2010-05-11 12:20:15 -07:00
xtalloc.c Rewrite macro handling to support function-like macro invocation in macro values 2010-05-18 22:10:04 -07:00

README 

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