Support for labels with no statement #562
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added 2 commits
January 8, 2025 10:26
…qual. Add test corroborating equality of ASTs
eliben
requested changes
Jan 9, 2025
pycparser/c_parser.py
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| @@ -1580,6 +1580,14 @@ def p_labeled_statement_3(self, p): | |||
| """ labeled_statement : DEFAULT COLON pragmacomp_or_statement """ | |||
| p[0] = c_ast.Default([p[3]], self._token_coord(p, 1)) | |||
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| def p_labeled_statement_4(self, p): | |||
| """ labeled_statement : ID COLON SEMI""" | |||
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I don't think this rule (_4) should be necessary, since a statement can already be empty. Why do you need it?
eliben
requested changes
Jan 10, 2025
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For the test, there's no reason to create a separate class just for this test. You can add a test_ function to the existing class.
Also, you're only checking that the code compiles properly without verifying anything about the AST. pycparser could completely ignore the label here and your test would still pass.
You probably want something similar to test_pragmacomp_or_statement but much simpler, that checks the right AST nodes with labels are parsed in a short function body.
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This pull request is aimed at fixing the issue described here: #528
The testing I did seems fine, and I implemented it through two rules to ensure that the representation of
label:andlabel:;is the same.