Function normalize_for_compare

compiler/cpp/tests/cpp/t_cpp_generator_test_utils.h:70–116

Normalize generated code for comparison by removing comments and extra whitespace

// Normalize generated code for comparison by removing comments and extra whitespace
inline std::string normalize_for_compare(std::string s) {
    s.erase(std::remove(s.begin(), s.end(), '\r'), s.end());

    std::istringstream in(s);
    std::ostringstream out;
    std::string line;
    bool in_block_comment = false;
    bool first = true;
    while (std::getline(in, line)) {
        while (!line.empty() && (line.back() == ' ' || line.back() == '\t')) {
            line.pop_back();
        }

        const auto first_non_ws = line.find_first_not_of(" \t");
        if (first_non_ws == std::string::npos) {
            continue;
        }

        const std::string trimmed = line.substr(first_non_ws);

        if (in_block_comment) {
            if (trimmed.find("*/") != std::string::npos) {
                in_block_comment = false;
            }
            continue;
        }

        if (trimmed.size() >= 2 && trimmed.compare(0, 2, "//") == 0) {
            continue;
        }

        if (trimmed.size() >= 2 && trimmed.compare(0, 2, "/*") == 0) {
            if (trimmed.find("*/") == std::string::npos) {
                in_block_comment = true;
            }
            continue;
        }

        if (!first) {
            out << '\n';
        }
        first = false;
        out << line;
    }

    return out.str();
}

// Parse a thrift program for testing
inline void parse_thrift_for_test(t_program* program) {