Function stripTrailingLineComments

src/attributes.cpp:3029–3070

Remove trailing line comments -- ie, find comments that don't begin a line, and remove them. We avoid stripping attributes.

    // Remove trailing line comments -- ie, find comments that don't begin
    // a line, and remove them. We avoid stripping attributes.
    void stripTrailingLineComments(std::string* pStr) {

        if (pStr->empty()) return;

        size_t len = pStr->length();
        bool inString = false;
        size_t idx = 0;

        // if this is an roxygen comment, then bail
        if (isRoxygenCpp(*pStr)) return;

        // skip over initial whitespace
        idx = pStr->find_first_not_of(kWhitespaceChars);
        if (idx == std::string::npos) return;

        // skip over a first comment
        if (idx + 1 < len && pStr->at(idx) == '/' && pStr->at(idx + 1) == '/') {
            idx = idx + 2;
        }

        // since we are searching for "//", we iterate up to 2nd last character
        while (idx < len - 1) {

            if (inString) {
                if (pStr->at(idx) == '"' && pStr->at(idx - 1) != '\\') {
                    inString = false;
                }
            } else {
                if (pStr->at(idx) == '"') {
                    inString = true;
                }
            }

            if (!inString &&
                pStr->at(idx) == '/' &&
                pStr->at(idx + 1) == '/') {
                pStr->erase(idx);
                return;
            }
            ++idx;
        }
    }

    // Trim a string
    void trimWhitespace(std::string* pStr) {