private static void ReloadChangedScriptFiles()
{
// Nothing to do if no files changed
if (!s_appScriptDirChanged)
{
return;
}
// TODO: a new ScriptRuntime should be created instead
foreach (string path in Directory.GetFiles(s_scriptFolder))
{
string ext = Path.GetExtension(path);
if (IsDLRLanguageExtension(ext))
{
try {
s_scriptEnvironment.ExecuteFile(path);
} catch (SyntaxErrorException e) {
EngineHelper.ThrowSyntaxErrorException(e);
}
}
}
// Clear out the flag to mark that all the changes were processed
s_appScriptDirChanged = false;
}
internal static BuildResult GetBuildResult(string virtualPath, IBuildProvider buildProvider)
{
// If any script files in App_Scripts changed, they need to be reloaded
ReloadChangedScriptFiles();
virtualPath = VirtualPathUtility.ToAbsolute(virtualPath);
string cacheKey = virtualPath.ToLowerInvariant();
// Look up the cache before and after taking the lock
BuildResult result = (BuildResult)HttpRuntime.Cache[cacheKey];
if (result != null)
{
return(result);
}
ScriptEngine scriptEngine = buildProvider.GetScriptEngine();
lock (typeof(EngineHelper)) {
result = (BuildResult)HttpRuntime.Cache[cacheKey];
if (result != null)
{
return(result);
}
DateTime utcStart = DateTime.UtcNow;
CompiledCode compiledCode = null;
string scriptCode = buildProvider.GetScriptCode();
if (scriptCode != null)
{
// We pass the physical path for debugging purpose
string physicalPath = HostingEnvironment.MapPath(virtualPath);
ScriptSource source = scriptEngine.CreateScriptSourceFromString(scriptCode, physicalPath, SourceCodeKind.File);
try {
compiledCode = source.Compile();
} catch (SyntaxErrorException e) {
EngineHelper.ThrowSyntaxErrorException(e);
}
}
// Note that we cache the result even if there is no script, to avoid having to check
// again later.
result = buildProvider.CreateBuildResult(compiledCode, virtualPath);
CacheDependency cacheDependency = HostingEnvironment.VirtualPathProvider.GetCacheDependency(
virtualPath, new Util.SingleObjectCollection(virtualPath), utcStart);
// Cache the result with a 5 minute sliding expiration
HttpRuntime.Cache.Insert(cacheKey, result, cacheDependency,
Cache.NoAbsoluteExpiration, TimeSpan.FromMinutes(5));
}
return(result);
}
internal static void ExecuteCode(ScriptScope scope, CompiledCode compiledCode, string virtualPath)
{
try {
compiledCode.Execute(scope);
} catch (SyntaxErrorException e) {
EngineHelper.ThrowSyntaxErrorException(e);
} catch (Exception e) {
if (!EngineHelper.ProcessRuntimeException(compiledCode.Engine, e, virtualPath))
{
throw;
}
}
}
