/// <summary>
/// Tries to execute a code from JavaScript file with pre-compilation.
/// </summary>
/// <param name="engine">Engine to execute code from JavaScript file with pre-compilation</param>
/// <param name="cache">Cache used for storing the pre-compiled scripts</param>
/// <param name="fileSystem">File system wrapper</param>
/// <param name="path">Path to the JavaScript file</param>
/// <param name="scriptLoader">Delegate that loads a code from specified JavaScript file</param>
/// <returns>true if can perform a script pre-compilation; otherwise, false.</returns>
public static bool TryExecuteFileWithPrecompilation(this IJsEngine engine, ICache cache,
IFileSystem fileSystem, string path, Func <string, string> scriptLoader = null)
{
if (!CheckPrecompilationAvailability(engine, cache))
{
return(false);
}
var cacheKey = string.Format(PRECOMPILED_JS_FILE_CACHE_KEY, path);
var precompiledScript = cache.Get <IPrecompiledScript>(cacheKey);
if (precompiledScript == null)
{
var contents = scriptLoader != null?scriptLoader(path) : fileSystem.ReadAsString(path);
precompiledScript = engine.Precompile(contents, path);
var fullPath = fileSystem.MapPath(path);
cache.Set(
cacheKey,
precompiledScript,
slidingExpiration: PRECOMPILED_JS_CACHE_ENTRY_SLIDING_EXPIRATION,
cacheDependencyFiles: new[] { fullPath }
);
}
engine.Execute(precompiledScript);
return(true);
}