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c++clangabstract-syntax-treelibclang

Get operator type for CXCursor_BinaryOperator

I'm trying to find an assignment in C++ source file:

x = 10;

I'm using libclang to parse it and traverse AST. There is an CXCursor_BinaryOperator that represents binary operators. Is there a way to determine whether it is an assignment or any other binary operator (like + or <= or !=)? If not then how can I determine if the expression is an assignment or not?

Thnks in advance.

Solution

  • The following code may work for you:

      CXToken *tokens;
  unsigned numTokens;
  CXSourceRange range = clang_getCursorExtent(cursor);
  clang_tokenize(tu, range, &tokens, &numTokens);
  for(unsigned i=0; i<numTokens; i++) {
    CXString s = clang_getTokenSpelling(tu, tokens[i]);
    const char* str = clang_getCString(s);
    if( strcmp(str, "=") == 0 ) {
      /* found */
    }
    clang_disposeString(s);
  }
  clang_disposeTokens(tu, tokens, numTokens);