|
public static CreateLoadError ( |
||
| innerException | ||
| Результат | ||
internal Assembly ResolveAssembly(string /*!*/ fullName)
{
Utils.Log(String.Format("Resolving assembly: '{0}'", fullName), "RESOLVE_ASSEMBLY");
AssemblyName assemblyName = new AssemblyName(fullName);
ResolvedFile file = FindFile(assemblyName.Name, true, ArrayUtils.EmptyStrings).FirstOrDefault();
if (file == null || file.SourceUnit != null)
{
return(null);
}
Utils.Log(String.Format("Assembly '{0}' resolved: found in '{1}'", fullName, file.Path), "RESOLVE_ASSEMBLY");
try {
Assembly assembly = Platform.LoadAssemblyFromPath(file.Path);
#if !SILVERLIGHT
// TODO: this API is broken
if (AssemblyName.ReferenceMatchesDefinition(assemblyName, assembly.GetName()))
#endif
{
Utils.Log(String.Format("Assembly '{0}' loaded for '{1}'", assembly.FullName, fullName), "RESOLVE_ASSEMBLY");
DomainManager.LoadAssembly(assembly);
return(assembly);
}
} catch (Exception e) {
throw RubyExceptions.CreateLoadError(e);
}
#if !SILVERLIGHT
return(null);
#endif
}
/// <exception cref="LoadError"></exception>
private void LoadLibrary(Type /*!*/ initializerType, bool builtin)
{
lock (_loadedTypes) {
if (_loadedTypes.Contains(initializerType))
{
return;
}
}
LibraryInitializer initializer;
try {
initializer = Activator.CreateInstance(initializerType) as LibraryInitializer;
} catch (TargetInvocationException e) {
throw RubyExceptions.CreateLoadError(e.InnerException);
} catch (Exception e) {
throw RubyExceptions.CreateLoadError(e);
}
if (initializer == null)
{
throw RubyExceptions.CreateLoadError(String.Format("Specified type {0} is not a subclass of {1}",
initializerType.FullName,
typeof(LibraryInitializer).FullName)
);
}
// Propagate exceptions from initializers (do not wrap them to LoadError).
// E.g. TypeError (can't modify frozen module) can be thrown.
initializer.LoadModules(_context, builtin);
lock (_loadedTypes) {
_loadedTypes.Add(initializerType);
}
}
/// <summary>
/// Searches file in load directories and then appends extensions.
/// </summary>
private ResolvedFile FindFile(string /*!*/ path, bool appendExtensions, string[] sourceFileExtensions)
{
Assert.NotNull(path);
bool isAbsolutePath;
#if SILVERLIGHT
{
#else
if (path.StartsWith("~/", StringComparison.Ordinal) || path.StartsWith("~\\", StringComparison.Ordinal))
{
path = RubyUtils.ExpandPath(_context.Platform, path);
isAbsolutePath = true;
}
else
{
#endif
try {
isAbsolutePath = Platform.IsAbsolutePath(path);
} catch (ArgumentException e) {
throw RubyExceptions.CreateLoadError(e);
}
}
string extension = RubyUtils.GetExtension(path);
// Absolute path -> load paths not consulted.
if (isAbsolutePath)
{
return(ResolveFile(path, extension, appendExtensions, sourceFileExtensions));
}
string[] loadPaths = GetLoadPathStrings();
if (loadPaths.Length == 0)
{
return(null);
}
// If load paths are non-empty and the path starts with .\ or ..\ then MRI also ignores the load paths.
if (path.StartsWith("./", StringComparison.Ordinal) ||
path.StartsWith("../", StringComparison.Ordinal) ||
path.StartsWith(".\\", StringComparison.Ordinal) ||
path.StartsWith("..\\", StringComparison.Ordinal))
{
return(ResolveFile(path, extension, appendExtensions, sourceFileExtensions));
}
foreach (var dir in loadPaths)
{
ResolvedFile result = ResolveFile(RubyUtils.CombinePaths(dir, path), extension, appendExtensions, sourceFileExtensions);
if (result != null)
{
return(result);
}
}
return(null);
}
/// <exception cref="LoadError"></exception>
internal void LoadBuiltins()
{
Type initializerType;
try {
Assembly assembly = _context.DomainManager.Platform.LoadAssembly(GetIronRubyAssemblyLongName("IronRuby.Libraries"));
initializerType = assembly.GetType(LibraryInitializer.GetBuiltinsFullTypeName());
} catch (Exception e) {
throw RubyExceptions.CreateLoadError(e);
}
LoadLibrary(initializerType, true);
}
/// <summary>
/// Appends extensions if applicable.
/// </summary>
private ResolvedFile ResolveFile(string /*!*/ path, string /*!*/ extension, bool appendExtensions, string[] /*!*/ knownExtensions)
{
Debug.Assert(RubyUtils.GetExtension(path) == extension);
string expandedPath = RubyUtils.ExpandPath(_context.Platform, path);
// MRI doesn't load file w/o .rb extension:
if (IsKnownExtension(extension, knownExtensions))
{
return(GetSourceUnit(path, expandedPath, extension, false));
}
if (_LibraryExtensions.IndexOf(extension, DlrConfiguration.FileExtensionComparer) != -1)
{
if (Platform.FileExists(expandedPath))
{
return(new ResolvedFile(expandedPath, null));
}
}
else if (!appendExtensions)
{
return(GetSourceUnit(path, expandedPath, extension, false));
}
if (appendExtensions)
{
List <string> matchingExtensions = GetExtensionsOfExistingFiles(expandedPath, knownExtensions);
if (matchingExtensions.Count == 1)
{
return(GetSourceUnit(path + matchingExtensions[0], expandedPath + matchingExtensions[0], matchingExtensions[0], true));
}
else if (matchingExtensions.Count > 1)
{
Exception e = new AmbiguousFileNameException(expandedPath + matchingExtensions[0], expandedPath + matchingExtensions[1]);
throw RubyExceptions.CreateLoadError(e);
}
foreach (string libExtension in _LibraryExtensions)
{
if (Platform.FileExists(expandedPath + libExtension))
{
return(new ResolvedFile(expandedPath + libExtension, libExtension));
}
}
}
return(null);
}
private Assembly GetAssembly(string /*!*/ assemblyName, bool throwOnError, bool tryPartialName)
{
#if SILVERLIGHT || WIN8 || WP75
tryPartialName = false;
#endif
try {
return(Platform.LoadAssembly(assemblyName));
} catch (Exception e) {
if (!tryPartialName || !(e is FileNotFoundException))
{
if (throwOnError)
{
throw RubyExceptions.CreateLoadError(e);
}
else
{
return(null);
}
}
}
#if SILVERLIGHT || WIN8 || WP75
throw Assert.Unreachable;
#else
#pragma warning disable 618,612 // csc, gmcs
Assembly assembly;
try {
assembly = Assembly.LoadWithPartialName(assemblyName);
} catch (Exception e) {
if (throwOnError)
{
throw RubyExceptions.CreateLoadError(e);
}
else
{
return(null);
}
}
if (assembly == null && throwOnError)
{
throw RubyExceptions.CreateLoadError(String.Format("Assembly '{0}' not found", assemblyName));
}
#pragma warning restore 618,612
return(assembly);
#endif
}
private bool LoadAssembly(Assembly /*!*/ assembly, string typeName, bool throwOnError)
{
Utils.Log(String.Format("Loading assembly '{0}' and type '{1}'", assembly, typeName), "LOADER");
Type initializerType;
if (typeName != null)
{
// load Ruby library:
initializerType = assembly.GetType(typeName);
if (initializerType == null)
{
if (throwOnError)
{
throw new TypeLoadException(
String.Format("Unhandled Exception: System.TypeLoadException: Could not load type '{0}' from assembly '{1}'.",
typeName, assembly.FullName)
);
}
return(false);
}
LoadLibrary(initializerType, false);
}
else
{
// load namespaces:
try {
DomainManager.LoadAssembly(assembly);
} catch (Exception e) {
if (throwOnError)
{
throw RubyExceptions.CreateLoadError(e);
}
return(false);
}
}
return(true);
}
private bool LoadAssembly(Assembly /*!*/ assembly, string typeName, bool throwOnError)
{
Utils.Log(String.Format("Loading assembly '{0}' and type '{1}'", assembly, typeName), "LOADER");
Type initializerType;
if (typeName != null)
{
// load Ruby library:
try {
initializerType = assembly.GetType(typeName, true);
} catch (Exception e) {
if (throwOnError)
{
throw new LoadError(e.Message, e);
}
return(false);
}
LoadLibrary(initializerType, false);
}
else
{
// load namespaces:
try {
DomainManager.LoadAssembly(assembly);
} catch (Exception e) {
if (throwOnError)
{
throw RubyExceptions.CreateLoadError(e);
}
return(false);
}
}
return(true);
}
private bool LoadFromPath(Scope globalScope, object self, string /*!*/ path, RubyEncoding /*!*/ pathEncoding, LoadFlags flags, out object loaded)
{
Assert.NotNull(pathEncoding, path);
string[] sourceFileExtensions;
if ((flags & LoadFlags.AnyLanguage) != 0)
{
sourceFileExtensions = DomainManager.Configuration.GetFileExtensions();
}
else
{
sourceFileExtensions = DomainManager.Configuration.GetFileExtensions(_context);
}
IList <ResolvedFile> files = FindFile(path, (flags & LoadFlags.AppendExtensions) != 0, sourceFileExtensions);
if (files.Count == 0)
{
// MRI: doesn't throw an exception if the path is in $" (performs resolution first though):
if (AlreadyLoaded(path, null, flags, sourceFileExtensions))
{
loaded = null;
return(false);
}
throw RubyExceptions.CreateLoadError(String.Format("no such file to load -- {0}", path));
}
ResolvedFile file = files.First();
string pathWithExtension = path;
if (file.AppendedExtension != null)
{
pathWithExtension += file.AppendedExtension;
}
if (AlreadyLoaded(path, files, flags) || _unfinishedFiles.Contains(file.Path))
{
if ((flags & LoadFlags.ResolveLoaded) != 0)
{
if (file.SourceUnit != null)
{
Scope loadedScope;
if (!LoadedScripts.TryGetValue(file.Path, out loadedScope))
{
throw RubyExceptions.CreateLoadError(String.Format("no such file to load -- {0}", file.Path));
}
loaded = loadedScope;
}
else
{
loaded = Platform.LoadAssemblyFromPath(file.Path);
}
}
else
{
loaded = null;
}
return(false);
}
try {
// save path as is, no canonicalization nor combination with an extension or directory:
_unfinishedFiles.Push(file.Path);
if (file.SourceUnit != null)
{
AddScriptLines(file.SourceUnit);
ScriptCode compiledCode;
if (file.SourceUnit.LanguageContext == _context)
{
compiledCode = CompileRubySource(file.SourceUnit, flags);
}
else
{
compiledCode = file.SourceUnit.Compile();
}
loaded = Execute(globalScope, compiledCode);
}
else
{
Debug.Assert(file.Path != null);
try {
Assembly assembly = Platform.LoadAssemblyFromPath(file.Path);
DomainManager.LoadAssembly(assembly);
loaded = assembly;
} catch (Exception e) {
throw RubyExceptions.CreateLoadError(e);
}
}
FileLoaded(MutableString.Create(file.Path, pathEncoding), flags);
} finally {
_unfinishedFiles.Pop();
}
return(true);
}
private ResolvedFile FindFile(string /*!*/ path, bool appendExtensions, string[] sourceFileExtensions)
{
Assert.NotNull(path);
bool isAbsolutePath;
string extension;
string home = null;
#if !SILVERLIGHT
if (path.StartsWith("~/", StringComparison.Ordinal) || path.StartsWith("~\\", StringComparison.Ordinal))
{
try {
home = Environment.GetEnvironmentVariable("HOME");
} catch (SecurityException) {
home = null;
}
if (home == null)
{
throw RubyExceptions.CreateArgumentError(String.Format("couldn't find HOME environment -- expanding `{0}'", path));
}
}
#endif
try {
if (home != null)
{
path = RubyUtils.CombinePaths(home, path.Substring(2));
}
isAbsolutePath = Platform.IsAbsolutePath(path);
extension = RubyUtils.GetExtension(path);
} catch (ArgumentException e) {
throw RubyExceptions.CreateLoadError(e);
}
// Absolute path -> load paths not consulted.
if (isAbsolutePath)
{
return(ResolveFile(path, extension, appendExtensions, sourceFileExtensions));
}
string[] loadPaths = GetLoadPathStrings();
if (loadPaths.Length == 0)
{
return(null);
}
// If load paths are non-empty and the path starts with .\ or ..\ then MRI also ignores the load paths.
if (path.StartsWith("./", StringComparison.Ordinal) ||
path.StartsWith("../", StringComparison.Ordinal) ||
path.StartsWith(".\\", StringComparison.Ordinal) ||
path.StartsWith("..\\", StringComparison.Ordinal))
{
return(ResolveFile(path, extension, appendExtensions, sourceFileExtensions));
}
foreach (var dir in loadPaths)
{
try {
ResolvedFile result = ResolveFile(RubyUtils.CombinePaths(dir, path), extension, appendExtensions, sourceFileExtensions);
if (result != null)
{
return(result);
}
} catch (ArgumentException) {
// invalid characters in path
}
}
return(null);
}