[cfe-dev] Trouble to use MatchFinder::match

[Anthony Lefort via cfe-dev]

Hi,

I'm a software developer and in my company we use clang to parse c++ code.
I'm in trouble to go to a call back when I'm using an AST matcher.
Here is the problem:
I already use the function " clang::ast_matchers::MatchFinder::matchAST(ASTContext&)" and it works perfectly. But, in a particular case, I would like to match only within a subtree so I try to use " clang::ast_matchers::MatchFinder::match(constT &node, ASTContext&)" but I never reach my callback.

Here a sample of a source code
        clang::ast_matchers::MatchFinder matcherFinder;
        matcherFinder.addMatcher(binaryOperatorMatcher, new MatchCallback(
            [&cleanListField](cla::MatchFinder::MatchResult const & matchRes)
        {
            auto binaryOperator = matchRes.Nodes.getNodeAs<clang::Stmt>(binaryOperatorNode);
            binaryOperator->dumpColor();
        }));
        matcherFinder.match((*constructor), constructor->getASTContext());
        //matcherFinder.matchAST(constructor->getASTContext());

As we can see in the example, the subtree root is a clang::CXXConstructorDecl.

Thanks you in advance.

Best regards.

Anthony LEFORT
Software engineer
3 rue Marcel Allégot
92190 Meudon - France

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