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Extend the syntax of #line and __FILE__ to support filename strings.

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According to the GLSL spec, the second parameter to #line should be
an integer source string number and __FILE__ will be substituted
with the integer source string number currently processed. This
patch extends the syntax of #line and __FILE__. Now #line accepts
as the second parameter a filename string quoted by double quotation
marks. And if such a #line is set, __FILE__ will be substituted with
the currently set filename string. The implementation is done via
introducing a new extension GL_GOOGLE_cpp_style_line_directive using
the extension framework.

The purpose is to support cpp-style #line directives, which is
required by #include.
This commit is contained in:
Lei Zhang 2015-06-25 17:53:54 -04:00
parent c777fc2c4c
commit 5011fbebc3
16 changed files with 176 additions and 19 deletions
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15
Test/baseResults/preprocessor.cpp_style_line_directive.vert.err Normal file
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ERROR: 0:3: '#error' : at 0:3
ERROR: a.h:150: '#error' : at a.h:150
ERROR: a.h:24: '#error' : at a.h:24
ERROR: a.h:42: '#error' : at a.h:42
ERROR: b.cc:30: '#error' : at b.cc:30
ERROR: 3:10: '#error' : at 3:10
ERROR: 3:48: '#error' : at 3:48
ERROR: 3:4: '#error' : at 3:4
ERROR: 100:55: '#error' : at 100:55
ERROR: c:1000: '#error' : at c:1000
ERROR: 1:42: '#error' : at 1:42
ERROR: this-is-a-quite-long-name-maybe-i-should-shorten-it:42: '#error' : at this-is-a-quite-long-name-maybe-i-should-shorten-it:42
ERROR: 12 compilation errors. No code generated.