Function readFileCached

tsn/src/test262/runner/main.cpp:137–153

};

Result<std::string> readFileCached(const fs::path& file) {
    static std::map<std::string, std::string> fileCache;
    auto findItr = fileCache.find(file);
    if (findItr != fileCache.end()) {
        return findItr->second;
    }

    auto loadResult = DiskUtils::load(Path(file.string()));
    if (!loadResult) {
        TEST262_LOG(cerr, "Failed to load {} with error {}", file.string(), loadResult.error().getMessage());
        return loadResult.error();
    }
    const auto loadData = loadResult.moveValue();

    fileCache[file] = loadData.asStringView();
    return fileCache[file];
}

enum class ExecutionResult {
    RunWithPass,