07e6eb6e75
If you're having trouble getting a yaml2obj macro expansion to do what you want, it's useful to be able to print the output of the preprocessing to see what your macros expanded to //before// going into the YAML processing phase. yaml2obj has its own preprocessing system which isn't the same as any other well-known thing like cpp. So there's no way to do this macro expansion via another tool: yaml2obj will have to do it itself. In this commit I add an `-E` flag to yaml2obj to do that. Differential Revision: https://reviews.llvm.org/D130981
17 lines
612 B
Plaintext
17 lines
612 B
Plaintext
# RUN: yaml2obj -E -Dfoo=wibble %s | FileCheck %s
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This is a test of yaml2obj's pure preprocessing mode, so it doesn't
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have to contain valid YAML, or any YAML at all. But we do have to be
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careful with the FileCheck CHECK directives, because they'll be
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emitted into the preprocessed output, and risk matching themselves!
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For that reason, each one matches only at the start of a line.
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Expand a macro:
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[[foo]] # CHECK: {{^wibble}}
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Expand an undefined macro:
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[[bar]] # CHECK: {{^\[\[bar\]\]}}
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Expand an undefined macro where we provided a default value:
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[[baz=123]] # CHECK: {{^123}}
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