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Carl Worth a807fb72c4 Rewrite macro handling to support function-like macro invocation in macro values 
The rewrite her discards the functions that did direct, recursive
expansion of macro values. Instead, the parser now pushes the macro
definition string over to a stack of buffers for the lexer. This way,
macro expansion gets access to all parsing machinery.

This isn't a small change, but the result is simpler than before (I
think). It passes the entire test suite, including the four tests
added with the previous commit that were failing before.
2010-05-18 22:10:04 -07:00
main Add hash table implementation from glsl2 project. 2010-05-10 13:36:26 -07:00
tests Add several tests where the defined value of a macro is (or looks like) a macro 2010-05-18 22:09:57 -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 Rewrite macro handling to support function-like macro invocation in macro values 2010-05-18 22:10:04 -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