ParseTreePatternMatcher.matchImpl

@uml Recursively walk {@code tree} against {@code patternTree}, filling {@code match.}{@link ParseTreeMatch#labels labels}.

@return the first node encountered in {@code tree} which does not match a corresponding node in {@code patternTree}, or {@code null} if the match was successful. The specific node returned depends on the matching algorithm used by the implementation, and may be overridden.

class ParseTreePatternMatcher
protected
matchImpl

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