6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
29 lines
793 B
Plaintext
29 lines
793 B
Plaintext
# Copyright 2006 Google, Inc. All Rights Reserved.
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# Licensed to PSF under a Contributor Agreement.
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# A grammar to describe tree matching patterns.
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# Not shown here:
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# - 'TOKEN' stands for any token (leaf node)
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# - 'any' stands for any node (leaf or interior)
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# With 'any' we can still specify the sub-structure.
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# The start symbol is 'Matcher'.
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Matcher: Alternatives ENDMARKER
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Alternatives: Alternative ('|' Alternative)*
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Alternative: (Unit | NegatedUnit)+
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Unit: [NAME '='] ( STRING [Repeater]
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| NAME [Details] [Repeater]
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| '(' Alternatives ')' [Repeater]
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| '[' Alternatives ']'
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)
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NegatedUnit: 'not' (STRING | NAME [Details] | '(' Alternatives ')')
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Repeater: '*' | '+' | '{' NUMBER [',' NUMBER] '}'
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Details: '<' Alternatives '>'
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