/// <summary>
/// Creates a delegate that does type conversion and calls the bound method.
/// </summary>
/// <param name="argumentCount"> The number of arguments that will be passed to the delegate. </param>
/// <returns> A delegate that does type conversion and calls the method represented by this
/// object. </returns>
/// <remarks> No caching of the result occurs. </remarks>
private BinderDelegate CreateDelegateCore(int argumentCount)
{
// Create a new dynamic method.
System.Reflection.Emit.DynamicMethod dm;
ILGenerator generator;
if (ScriptEngine.LowPrivilegeEnvironment == false)
{
// Full trust only - skips visibility checks.
dm = new System.Reflection.Emit.DynamicMethod(
string.Format("binder_for_{0}", this.FullName), // Name of the generated method.
typeof(object), // Return type of the generated method.
new[] { typeof(ScriptEngine), typeof(object), typeof(object[]) }, // Parameter types of the generated method.
typeof(JSBinder), // Owner type.
true); // Skips visibility checks.
generator = new DynamicILGenerator(dm);
}
else
{
// Partial trust / silverlight.
dm = new System.Reflection.Emit.DynamicMethod(
string.Format("binder_for_{0}", this.FullName), // Name of the generated method.
typeof(object), // Return type of the generated method.
new[] { typeof(ScriptEngine), typeof(object), typeof(object[]) }); // Parameter types of the generated method.
generator = new ReflectionEmitILGenerator(dm.GetILGenerator());
}
// Generate the body of the method.
GenerateStub(generator, argumentCount);
// Convert the DynamicMethod to a delegate.
return((BinderDelegate)dm.CreateDelegate(typeof(BinderDelegate)));
}
public static EmptyCtorDelegate GetConstructorMethodToCache(Type type)
{
var emptyCtor = type.GetConstructor(Type.EmptyTypes);
if (emptyCtor != null)
{
#if MONOTOUCH || c || XBOX
return(() => Activator.CreateInstance(type));
#elif WINDOWS_PHONE
return(Expression.Lambda <EmptyCtorDelegate>(Expression.New(type)).Compile());
#else
#if SILVERLIGHT
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes);
#else
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes, typeof(ReflectionExtensions).Module, true);
#endif
var ilgen = dm.GetILGenerator();
ilgen.Emit(System.Reflection.Emit.OpCodes.Nop);
ilgen.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyCtor);
ilgen.Emit(System.Reflection.Emit.OpCodes.Ret);
return((EmptyCtorDelegate)dm.CreateDelegate(typeof(EmptyCtorDelegate)));
#endif
}
#if (SILVERLIGHT && !WINDOWS_PHONE) || XBOX
return(() => Activator.CreateInstance(type));
#elif WINDOWS_PHONE
return(Expression.Lambda <EmptyCtorDelegate>(Expression.New(type)).Compile());
#else
//Anonymous types don't have empty constructors
return(() => FormatterServices.GetUninitializedObject(type));
#endif
}
public static EmptyCtorDelegate GetConstructorMethodToCache(Type type)
{
var emptyCtor = type.GetTypeInfo().GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.CreateInstance | BindingFlags.Instance | BindingFlags.DeclaredOnly)
.FirstOrDefault(c => c.GetParameters().Length == 0);
if (emptyCtor != null)
{
#if MONOTOUCH || SILVERLIGHT || XBOX
return(() => Activator.CreateInstance(type));
#else
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes, typeof(ReflectionExtensions).GetTypeInfo().Module, true);
var ilgen = dm.GetILGenerator();
ilgen.Emit(System.Reflection.Emit.OpCodes.Nop);
ilgen.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyCtor);
ilgen.Emit(System.Reflection.Emit.OpCodes.Ret);
return((EmptyCtorDelegate)dm.CreateDelegate(typeof(EmptyCtorDelegate)));
#endif
}
#if SILVERLIGHT || XBOX || CORE_CLR
return(() => throw new JsonSerializationException($"{type.Name} can't be deserialized because it needs a parameterless constructor"));
#else
//Anonymous types don't have empty constructors
return(() => FormatterServices.GetUninitializedObject(type));
#endif
}
public static TDelegate MethodEmit <TDelegate>(MethodInfo methodInfo) where TDelegate : class
{
Type[] parameterTypes;
parameterTypes = GetFuncDelegateArguments <TDelegate>();
System.Reflection.Emit.DynamicMethod m = new System.Reflection.Emit.DynamicMethod(
"call_" + methodInfo.Name, GetFuncDelegateReturnType <TDelegate>(), parameterTypes, methodInfo.DeclaringType, true);
System.Reflection.Emit.ILGenerator cg = m.GetILGenerator();
for (int i = 0; i < parameterTypes.Length; i++)
{
cg.Emit(System.Reflection.Emit.OpCodes.Ldarg, i);
if (i > 0 && parameterTypes[i] == typeof(object))
{
cg.Emit(System.Reflection.Emit.OpCodes.Unbox_Any, methodInfo.GetParameters()[i - 1].ParameterType);
}
}
cg.Emit(System.Reflection.Emit.OpCodes.Callvirt, methodInfo);
if (methodInfo.ReturnType.IsValueType)
{
cg.Emit(System.Reflection.Emit.OpCodes.Box, methodInfo.ReturnType);
}
cg.Emit(System.Reflection.Emit.OpCodes.Ret);
return(m.CreateDelegate(typeof(TDelegate)) as TDelegate);
}
internal static object Creator(this Type type)
{
#if !NETSTANDARD1_3
if (!DefaultConstructor.ContainsKey(type))
{
DefaultConstructor.Add(type, type.GetConstructor(Type.EmptyTypes));
}
#endif
if (DefaultConstructor.ContainsKey(type) && DefaultConstructor[type] != null)
{
#if NETSTANDARD2_0 || NETSTANDARD1_3 || NETSTANDARD1_5
if (CachedConstructor.ContainsKey(type))
{
return(CachedConstructor[type].Invoke());
}
CachedConstructor.Add(type, Expression.Lambda <Func <object> >(Expression.New(type)).Compile());
return(CachedConstructor[type].Invoke());
#else
if (CachedDynamicMethod.ContainsKey(type))
{
return(CachedDynamicMethod[type]());
}
lock (CachedDynamicMethod)
{
var emptyConstructor = DefaultConstructor[type];
var dynamicMethod = new System.Reflection.Emit.DynamicMethod("CreateInstance", type, Type.EmptyTypes, true);
System.Reflection.Emit.ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Nop);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyConstructor);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ret);
CachedDynamicMethod.Add(type, (ObjectActivator)dynamicMethod.CreateDelegate(typeof(ObjectActivator)));
}
return(CachedDynamicMethod[type]());
#endif
}
else
{
#if !NETSTANDARD1_3
return(FormatterServices.GetUninitializedObject(type));
#else
try
{
if (CachedConstructor.ContainsKey(type))
{
return(CachedConstructor[type].Invoke());
}
CachedConstructor.Add(type, Expression.Lambda <Func <object> >(Expression.New(type)).Compile());
return(CachedConstructor[type].Invoke());
}
catch
{
throw new Exception("CloneError: Default constructor is require for NETSTANDARD1_3 for type " + type.FullName);
}
#endif
}
}
private Func <object> GetCtor(Type clr, Type key, Type value)
{
var type = typeof(Dictionary <,>).MakeGenericType(key, value);
var ctor = (type = (((type != clr) && clr.IsClass) ? clr : type)).GetConstructor(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.CreateInstance, null, System.Type.EmptyTypes, null);
var dyn = new System.Reflection.Emit.DynamicMethod("", typeof(object), null, typeof(string), true);
var il = dyn.GetILGenerator();
il.Emit(System.Reflection.Emit.OpCodes.Newobj, ctor);
il.Emit(System.Reflection.Emit.OpCodes.Ret);
return((Func <object>)dyn.CreateDelegate(typeof(Func <object>)));
}
public static Action <TField> StaticFieldSet <TField>(this Type source, FieldInfo fieldInfo)
{
System.Reflection.Emit.DynamicMethod m = new System.Reflection.Emit.DynamicMethod(
"setter_" + fieldInfo.Name, typeof(void), new Type[] { typeof(TField) }, source);
System.Reflection.Emit.ILGenerator cg = m.GetILGenerator();
// arg0.<field> = arg1
cg.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
cg.Emit(System.Reflection.Emit.OpCodes.Stsfld, fieldInfo);
cg.Emit(System.Reflection.Emit.OpCodes.Ret);
return((Action <TField>)m.CreateDelegate(typeof(Action <TField>)));
}
public static int GetManagedSize(Type type)
{
var method = new System.Reflection.Emit.DynamicMethod("GetManagedSizeImpl", typeof(uint), null);
System.Reflection.Emit.ILGenerator gen = method.GetILGenerator();
gen.Emit(System.Reflection.Emit.OpCodes.Sizeof, type);
gen.Emit(System.Reflection.Emit.OpCodes.Ret);
var func = (Func <uint>)method.CreateDelegate(typeof(Func <uint>));
return(checked ((int)func()));
}
static Func <object, int> CreateLengthGetter(Type elementType)
{
var typedCollection = typeof(ICollection <>).MakeGenericType(elementType);
var count = typedCollection.GetProperty("Count").GetMethod;
var dyn = new System.Reflection.Emit.DynamicMethod($"{nameof(CollectionLengthLookup)}_{nameof(elementType.Name)}", typeof(int), new[] { typeof(object) }, restrictedSkipVisibility: true);
var il = dyn.GetILGenerator();
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // object
il.Emit(System.Reflection.Emit.OpCodes.Castclass, typedCollection); // ICollection<elementType>
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, count); // int
il.Emit(System.Reflection.Emit.OpCodes.Ret); // --empty--
return((Func <object, int>)dyn.CreateDelegate(typeof(Func <object, int>)));
}
private Func <object> GetCtor(Type clr, bool list)
{
var type = (!list ? ((clr == typeof(object)) ? typeof(Dictionary <string, object>) : clr) : typeof(List <>).MakeGenericType(clr));
var ctor = type.GetConstructor(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.CreateInstance, null, System.Type.EmptyTypes, null);
if (ctor != null)
{
var dyn = new System.Reflection.Emit.DynamicMethod("", typeof(object), null, typeof(string), true);
var il = dyn.GetILGenerator();
il.Emit(System.Reflection.Emit.OpCodes.Newobj, ctor);
il.Emit(System.Reflection.Emit.OpCodes.Ret);
return((Func <object>)dyn.CreateDelegate(typeof(Func <object>)));
}
return(null);
}
System.Delegate Compile(TypeContext context, System.Type returnType, System.Type[] types, ParameterInfo[] parameters, System.Type delType)
{
var names = Parameters.Map(para => para.Name).AddFirst("closure");
// Emit First Argument
var lamdaVisit = new LamdaVisitor(names);
Body.Accept(lamdaVisit);
var parameterTypes = types.AddFirst(typeof(Runtime.Closure));
var method = new System.Reflection.Emit.DynamicMethod(Name, returnType, parameterTypes, true);
var methodGen = new Generators.DynamicMethodGenerator(method, parameters, null)
{
SyntaxBody = Body,
Context = context
};
methodGen.EmitParameterInfo();
var bodyGen = new MethodBodyGenerator(methodGen, method.GetILGenerator());
object[] values = new object[lamdaVisit.HoistedLocals.Count];
if (values.Length > 0)
{
int index = 0;
var field = typeof(Runtime.Closure).GetField("Values");
foreach (var item in lamdaVisit.HoistedLocals)
{
var value = item.Value;
values[index] = value.Accept(ScriptCompiler.Instance);
// if binder is null variable or member may not exist
if (value.NodeType == ExpressionType.Identifier && ((NameExpression)value).Binder is null)
{
continue;
}
var variable = bodyGen.DeclareVariable(value.Type, item.Key);
// load closure argument
bodyGen.LoadArgument(0);
bodyGen.LoadField(field);
bodyGen.LoadInt32(index);
bodyGen.LoadArrayElement(typeof(object));
bodyGen.UnboxObject(value.Type);
bodyGen.StoreVariable(variable);
index++;
}
}
bodyGen.Compile();
return(method.CreateDelegate(delType, new Runtime.Closure(values)));
}
/// <summary>
/// Generates dynamic method to extract '_object' and '_index' fields from <see cref="ReadOnlyMemory{T}"/>
/// </summary>
/// <returns>Generated method or null</returns>
private static ExtractObjectIndexFromMemoryDelegate TryGenerateExtractObjectIndexFromMemoryMethod()
{
#if NETSTANDARD
return(null);
#else
if (!CanExtractByteArrayOptimized())
{
return(null);
}
var memoryType = typeof(ReadOnlyMemory <byte>);
var objectField = memoryType.GetField("_object", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
var indexField = memoryType.GetField("_index", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
if (objectField == null || indexField == null)
{
return(null);
}
try
{
var method = new System.Reflection.Emit.DynamicMethod("ByteString_ExtractByteArray_" + Guid.NewGuid().ToString("N"),
null, new Type[] { typeof(ReadOnlyMemory <byte>).MakeByRefType(), typeof(object).MakeByRefType(), typeof(int).MakeByRefType() }, true);
var ilGen = method.GetILGenerator();
ilGen.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
ilGen.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
ilGen.Emit(System.Reflection.Emit.OpCodes.Ldfld, objectField);
ilGen.Emit(System.Reflection.Emit.OpCodes.Stind_Ref);
ilGen.Emit(System.Reflection.Emit.OpCodes.Ldarg_2);
ilGen.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
ilGen.Emit(System.Reflection.Emit.OpCodes.Ldfld, indexField);
ilGen.Emit(System.Reflection.Emit.OpCodes.Stind_I4);
ilGen.Emit(System.Reflection.Emit.OpCodes.Ret);
return((ExtractObjectIndexFromMemoryDelegate)method.CreateDelegate(typeof(ExtractObjectIndexFromMemoryDelegate)));
}
catch
{
return(null);
}
#endif
}
private static void Main()
{
System.Reflection.Emit.DynamicMethod lgcMethod =
new System.Reflection.Emit.DynamicMethod("HelloWorld",
typeof (void),
new Type[] {},
typeof (Program),
false);
System.Reflection.Emit.ILGenerator il = lgcMethod.GetILGenerator();
il.Emit(OpCodes.Ldstr, "Hello World");
il.Emit(OpCodes.Call, typeof (Console).GetMethod("WriteLine", new[] {typeof (string)}));
il.Emit(OpCodes.Call, typeof (Console).GetMethod("ReadLine"));
il.Emit(OpCodes.Ret);
lgcMethod.Invoke(null, null);
}
static UnsafeArrayReader()
{
var dyn = new System.Reflection.Emit.DynamicMethod("UnsafeArrayReader_" + typeof(T).Name, null, new[] { typeof(MemoryMappedViewAccessor), typeof(long), typeof(T[]), typeof(int), typeof(int) });
var il = dyn.GetILGenerator();
var readArrayGen = typeof(MemoryMappedViewAccessor).GetMethod("ReadArray");
var readArray = readArrayGen.MakeGenericMethod(typeof(T));
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // MemoryMappedViewAccessor
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1); // MemoryMappedViewAccessor long
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_2); // MemoryMappedViewAccessor long T[]
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_3); // MemoryMappedViewAccessor long T[] int
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_S, (byte)4); // MemoryMappedViewAccessor long T[] int int
il.Emit(System.Reflection.Emit.OpCodes.Call, readArray); // int
il.Emit(System.Reflection.Emit.OpCodes.Pop); // --empty--
il.Emit(System.Reflection.Emit.OpCodes.Ret); // --empty--
Delegate = (Action <MemoryMappedViewAccessor, long, T[], int, int>)dyn.CreateDelegate(typeof(Action <MemoryMappedViewAccessor, long, T[], int, int>));
}
static MemoryUtil()
{
var dynamicMethod = new System.Reflection.Emit.DynamicMethod
(
"MemCpy",
typeof(void),
new[] { typeof(void *), typeof(void *), typeof(uint) },
typeof(MemoryUtil)
);
var ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ldarg_2);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Cpblk);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ret);
MemCpy = (MemCpyFunction)dynamicMethod.CreateDelegate(typeof(MemCpyFunction));
}
/// <summary>
/// <para>以IL方式克隆(复制)该对象</para>
/// Generic cloning method that clones an object using IL.
/// Only the first call of a certain type will hold back performance.
/// After the first call, the compiled IL is executed.
/// </summary>
/// <typeparam name="T">Type of object to clone</typeparam>
/// <param name="myObject">Object to clone</param>
/// <returns>Cloned object</returns>
public static T CloneByIL <T>(this T myObject)
{
Delegate myExec = null;
if (!_cachedIL.TryGetValue(typeof(T), out myExec))
{
// Create ILGenerator
System.Reflection.Emit.DynamicMethod dymMethod = new System.Reflection.Emit.DynamicMethod("DoClone", typeof(T), new Type[] { typeof(T) }, true);
ConstructorInfo cInfo = myObject.GetType().GetConstructor(new Type[] { });
System.Reflection.Emit.ILGenerator generator = dymMethod.GetILGenerator();
System.Reflection.Emit.LocalBuilder lbf = generator.DeclareLocal(typeof(T));
//lbf.SetLocalSymInfo("_temp");
generator.Emit(System.Reflection.Emit.OpCodes.Newobj, cInfo);
generator.Emit(System.Reflection.Emit.OpCodes.Stloc_0);
foreach (FieldInfo field in myObject.GetType().GetFields(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic))
{
// Load the new object on the eval stack... (currently 1 item on eval stack)
generator.Emit(System.Reflection.Emit.OpCodes.Ldloc_0);
// Load initial object (parameter) (currently 2 items on eval stack)
generator.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
// Replace value by field value (still currently 2 items on eval stack)
generator.Emit(System.Reflection.Emit.OpCodes.Ldfld, field);
// Store the value of the top on the eval stack into the object underneath that value on the value stack.
// (0 items on eval stack)
generator.Emit(System.Reflection.Emit.OpCodes.Stfld, field);
}
// Load new constructed obj on eval stack -> 1 item on stack
generator.Emit(System.Reflection.Emit.OpCodes.Ldloc_0);
// Return constructed object. --> 0 items on stack
generator.Emit(System.Reflection.Emit.OpCodes.Ret);
myExec = dymMethod.CreateDelegate(typeof(Func <T, T>));
_cachedIL.Add(typeof(T), myExec);
}
return(((Func <T, T>)myExec)(myObject));
}
public static EmptyCtorDelegate GetConstructorMethodToCache(Type type)
{
var emptyCtor = type.GetConstructor(Type.EmptyTypes);
if (emptyCtor != null)
{
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes, typeof(ReflectionExtensions).Module, true);
var ilgen = dm.GetILGenerator();
ilgen.Emit(System.Reflection.Emit.OpCodes.Nop);
ilgen.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyCtor);
ilgen.Emit(System.Reflection.Emit.OpCodes.Ret);
return((EmptyCtorDelegate)dm.CreateDelegate(typeof(EmptyCtorDelegate)));
}
#if SILVERLIGHT
return(() => Activator.CreateInstance(type));
#else
//Anonymous types don't have empty constructors
return(() => FormatterServices.GetUninitializedObject(type));
#endif
}
/// <summary>
/// IL创建一个对象
/// </summary>
/// <param name="type">需要创建对象的类型</param>
/// <returns>对象</returns>
public static object ILCreateInstance(Type type)
{
//ConstructorInfo defaultCtor = type.GetConstructor(new Type[] { });
//System.Reflection.Emit.DynamicMethod dynMethod = new System.Reflection.Emit.DynamicMethod(
// name: string.Format("_{0:N}", Guid.NewGuid()),
// returnType: type,
// parameterTypes: null);
//var gen = dynMethod.GetILGenerator();
//gen.Emit(System.Reflection.Emit.OpCodes.Newobj, defaultCtor);
//gen.Emit(System.Reflection.Emit.OpCodes.Ret);
//return dynMethod.CreateDelegate(typeof(Func<T>)) as Func<T>;
System.Reflection.Emit.DynamicMethod dm = new System.Reflection.Emit.DynamicMethod(string.Empty, typeof(object), Type.EmptyTypes);
var gen = dm.GetILGenerator();
gen.Emit(System.Reflection.Emit.OpCodes.Newobj, type.GetConstructor(Type.EmptyTypes));
gen.Emit(System.Reflection.Emit.OpCodes.Ret);
return((Func <object>)dm.CreateDelegate(typeof(Func <object>)));
}
internal static object Creator(this Type type)
{
if (!DefaultConstructor.ContainsKey(type))
{
DefaultConstructor.Add(type, type.GetConstructor(Type.EmptyTypes));
}
if (DefaultConstructor[type] != null)
{
#if NETSTANDARD2_0 || NETSTANDARD1_3 || NETSTANDARD1_5
if (CachedConstructor.ContainsKey(type))
{
return(CachedConstructor[type].Invoke());
}
return(CachedConstructor.GetOrAdd(type, Expression.Lambda <Func <object> >(Expression.New(type)).Compile()).Invoke());
#else
if (CachedDynamicMethod.ContainsKey(type))
{
return(CachedDynamicMethod[type]());
}
var emptyConstructor = DefaultConstructor[type];
var dynamicMethod = new System.Reflection.Emit.DynamicMethod("CreateInstance", type, Type.EmptyTypes, true);
System.Reflection.Emit.ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Nop);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyConstructor);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ret);
return(CachedDynamicMethod.GetOrAdd(type, (ObjectActivator)dynamicMethod.CreateDelegate(typeof(ObjectActivator)))());
#endif
}
else
{
return(FormatterServices.GetUninitializedObject(type));
}
}
private ItemInfo GetItemInfo(Type type, string name, System.Reflection.MethodInfo setter)
{
var method = new System.Reflection.Emit.DynamicMethod("Set" + name, null, new Type[] { typeof(object), typeof(JsonParser), typeof(int), typeof(int) }, typeof(string), true);
var parse = GetParserParse(GetParseName(type));
var il = method.GetILGenerator();
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_2);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, parse);
if (type.IsValueType && (parse.ReturnType == typeof(object)))
{
il.Emit(System.Reflection.Emit.OpCodes.Unbox_Any, type);
}
if (parse.ReturnType.IsValueType && (type == typeof(object)))
{
il.Emit(System.Reflection.Emit.OpCodes.Box, parse.ReturnType);
}
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, setter);
il.Emit(System.Reflection.Emit.OpCodes.Ret);
return(new ItemInfo {
Type = type, Name = name, Set = (Action <object, JsonParser, int, int>)method.CreateDelegate(typeof(Action <object, JsonParser, int, int>)), Len = name.Length
});
}
/// <summary>
/// Creates a delegate that does type conversion and calls the bound method.
/// </summary>
/// <param name="argumentCount"> The number of arguments that will be passed to the delegate. </param>
/// <returns> A delegate that does type conversion and calls the method represented by this
/// object. </returns>
/// <remarks> No caching of the result occurs. </remarks>
private BinderDelegate CreateDelegateCore(int argumentCount)
{
// Create a new dynamic method.
// Full trust only - skips visibility checks.
System.Reflection.Emit.DynamicMethod dm = new System.Reflection.Emit.DynamicMethod(
string.Format("binder_for_{0}", this.FullName), // Name of the generated method.
typeof(object), // Return type of the generated method.
new Type[] { typeof(ScriptEngine), typeof(object), typeof(object[]) }, // Parameter types of the generated method.
typeof(JSBinder), // Owner type.
true); // Skips visibility checks.
ILGenerator generator;
#if __MonoCS__
generator = new ReflectionEmitILGenerator(dm.GetILGenerator());
#else
generator = new DynamicILGenerator(dm);
#endif
// Generate the body of the method.
GenerateStub(generator, argumentCount);
// Convert the DynamicMethod to a delegate.
return((BinderDelegate)dm.CreateDelegate(typeof(BinderDelegate)));
}
static Func<StringTemplate, TextReader, Antlr.Runtime.Lexer> BuildLexerCtor( Type lexerType )
{
if ( lexerType == null )
return null;
Func<StringTemplate, TextReader, Antlr.Runtime.Lexer> result;
if ( !_ctors.TryGetValue( lexerType, out result ) )
{
ConstructorInfo ctor = lexerType.GetConstructor( new Type[] { typeof( StringTemplate ), typeof( TextReader ) } );
System.Reflection.Emit.DynamicMethod dm = new System.Reflection.Emit.DynamicMethod( lexerType.Name + "Ctor", typeof( Antlr.Runtime.Lexer ), new Type[] { typeof( StringTemplate ), typeof( TextReader ) } );
var gen = dm.GetILGenerator();
gen.Emit( System.Reflection.Emit.OpCodes.Ldarg_0 );
gen.Emit( System.Reflection.Emit.OpCodes.Ldarg_1 );
gen.Emit( System.Reflection.Emit.OpCodes.Newobj, ctor );
gen.Emit( System.Reflection.Emit.OpCodes.Ret );
result = (Func<StringTemplate, TextReader, Antlr.Runtime.Lexer>)dm.CreateDelegate( typeof( Func<StringTemplate, TextReader, Antlr.Runtime.Lexer> ) );
_ctors[lexerType] = result;
}
return result;
}
static EnumMapper()
{
var dyn = new System.Reflection.Emit.DynamicMethod("Map_Enum_" + typeof(T).Name, typeof(T), new[] { typeof(int) }, restrictedSkipVisibility: true);
var il = dyn.GetILGenerator();
var underlying = Enum.GetUnderlyingType(typeof(T));
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // ---int---
if (underlying == typeof(byte))
{
il.Emit(System.Reflection.Emit.OpCodes.Conv_U1);
}
else
{
if (underlying == typeof(sbyte))
{
il.Emit(System.Reflection.Emit.OpCodes.Conv_I1);
}
else
{
if (underlying == typeof(short))
{
il.Emit(System.Reflection.Emit.OpCodes.Conv_I2);
}
else
{
if (underlying == typeof(ushort))
{
il.Emit(System.Reflection.Emit.OpCodes.Conv_U2);
}
else
{
if (underlying == typeof(int))
{
// Nothing to be done
}
else
{
if (underlying == typeof(uint))
{
il.Emit(System.Reflection.Emit.OpCodes.Conv_U4);
}
else
{
if (underlying == typeof(long))
{
il.Emit(System.Reflection.Emit.OpCodes.Conv_I8);
}
else
{
if (underlying == typeof(ulong))
{
il.Emit(System.Reflection.Emit.OpCodes.Conv_U8);
}
else
{
throw new InvalidOperationException($"\"Impossible\" (don't get cute) enum found, underlying type isn't an integral type {typeof(T).Name}");
}
}
}
}
}
}
}
}
il.Emit(System.Reflection.Emit.OpCodes.Ret);
Delegate = (Func <int, T>)dyn.CreateDelegate(typeof(Func <int, T>));
}
/// <summary>
/// Generates IL for the script.
/// </summary>
public void GenerateCode()
{
// Generate the abstract syntax tree if it hasn't already been generated.
if (this.AbstractSyntaxTree == null)
{
Parse();
Optimize();
}
// Initialize global code-gen information.
var optimizationInfo = new OptimizationInfo();
optimizationInfo.AbstractSyntaxTree = this.AbstractSyntaxTree;
optimizationInfo.StrictMode = this.StrictMode;
optimizationInfo.MethodOptimizationHints = this.MethodOptimizationHints;
optimizationInfo.FunctionName = this.GetStackName();
optimizationInfo.Source = this.Source;
ILGenerator generator;
if (this.Options.EnableDebugging == false)
{
// DynamicMethod requires full trust because of generator.LoadMethodPointer in the
// FunctionExpression class.
// Create a new dynamic method.
System.Reflection.Emit.DynamicMethod dynamicMethod = new System.Reflection.Emit.DynamicMethod(
GetMethodName(), // Name of the generated method.
typeof(object), // Return type of the generated method.
GetParameterTypes(), // Parameter types of the generated method.
typeof(MethodGenerator), // Owner type.
true); // Skip visibility checks.
#if USE_DYNAMIC_IL_INFO
generator = new DynamicILGenerator(dynamicMethod);
#else
generator = new ReflectionEmitILGenerator(dynamicMethod.GetILGenerator(), emitDebugInfo: false);
#endif
if (this.Options.EnableILAnalysis == true)
{
// Replace the generator with one that logs.
generator = new LoggingILGenerator(generator);
}
// Initialization code will appear to come from line 1.
optimizationInfo.MarkSequencePoint(generator, new SourceCodeSpan(1, 1, 1, 1));
// Generate the IL.
GenerateCode(generator, optimizationInfo);
generator.Complete();
// Create a delegate from the method.
this.GeneratedMethod = new GeneratedMethod(dynamicMethod.CreateDelegate(GetDelegate()), optimizationInfo.NestedFunctions);
}
else
{
#if ENABLE_DEBUGGING
// Debugging or low trust path.
ReflectionEmitModuleInfo reflectionEmitInfo;
System.Reflection.Emit.TypeBuilder typeBuilder;
lock (reflectionEmitInfoLock)
{
reflectionEmitInfo = ReflectionEmitInfo;
if (reflectionEmitInfo == null)
{
reflectionEmitInfo = new ReflectionEmitModuleInfo();
// Create a dynamic assembly and module.
reflectionEmitInfo.AssemblyBuilder = System.Threading.Thread.GetDomain().DefineDynamicAssembly(
new System.Reflection.AssemblyName("Jurassic Dynamic Assembly"), System.Reflection.Emit.AssemblyBuilderAccess.Run);
// Mark the assembly as debuggable. This must be done before the module is created.
var debuggableAttributeConstructor = typeof(System.Diagnostics.DebuggableAttribute).GetConstructor(
new Type[] { typeof(System.Diagnostics.DebuggableAttribute.DebuggingModes) });
reflectionEmitInfo.AssemblyBuilder.SetCustomAttribute(
new System.Reflection.Emit.CustomAttributeBuilder(debuggableAttributeConstructor,
new object[] {
System.Diagnostics.DebuggableAttribute.DebuggingModes.DisableOptimizations |
System.Diagnostics.DebuggableAttribute.DebuggingModes.Default
}));
// Create a dynamic module.
reflectionEmitInfo.ModuleBuilder = reflectionEmitInfo.AssemblyBuilder.DefineDynamicModule("Module", this.Options.EnableDebugging);
ReflectionEmitInfo = reflectionEmitInfo;
}
// Create a new type to hold our method.
typeBuilder = reflectionEmitInfo.ModuleBuilder.DefineType("JavaScriptClass" + reflectionEmitInfo.TypeCount.ToString(), System.Reflection.TypeAttributes.Public | System.Reflection.TypeAttributes.Class);
reflectionEmitInfo.TypeCount++;
}
// Create a method.
var methodBuilder = typeBuilder.DefineMethod(this.GetMethodName(),
System.Reflection.MethodAttributes.HideBySig | System.Reflection.MethodAttributes.Static | System.Reflection.MethodAttributes.Public,
typeof(object), GetParameterTypes());
// Generate the IL for the method.
generator = new ReflectionEmitILGenerator(methodBuilder.GetILGenerator(), emitDebugInfo: true);
if (this.Options.EnableILAnalysis == true)
{
// Replace the generator with one that logs.
generator = new LoggingILGenerator(generator);
}
if (this.Source.Path != null && this.Options.EnableDebugging == true)
{
// Initialize the debugging information.
optimizationInfo.DebugDocument = reflectionEmitInfo.ModuleBuilder.DefineDocument(this.Source.Path, LanguageType, LanguageVendor, DocumentType);
var parameterNames = GetParameterNames();
for (var i = 0; i < parameterNames.Length; i++)
{
methodBuilder.DefineParameter(i + 1, System.Reflection.ParameterAttributes.In, parameterNames[i]);
}
}
optimizationInfo.MarkSequencePoint(generator, new SourceCodeSpan(1, 1, 1, 1));
GenerateCode(generator, optimizationInfo);
generator.Complete();
// Bake it.
var type = typeBuilder.CreateType();
var methodInfo = type.GetMethod(this.GetMethodName());
this.GeneratedMethod = new GeneratedMethod(Delegate.CreateDelegate(GetDelegate(), methodInfo), optimizationInfo.NestedFunctions);
#else
throw new NotImplementedException();
#endif // ENABLE_DEBUGGING
}
if (this.Options.EnableILAnalysis == true)
{
// Store the disassembled IL so it can be retrieved for analysis purposes.
this.GeneratedMethod.DisassembledIL = generator.ToString();
}
}
//todo working on scope for better emit
public System.Delegate Compile(System.Type target, IExpressionVisitor <object> visitor)
{
//pass scoped arguments // refer System.Linq.Expression.Compiler folder
var context = TypeContext.Default;
System.Type returnType;
if (ReturnSyntax != null)
{
returnType = ReturnSyntax.ResolveType(context);
}
else
{
returnType = TypeProvider.AnyType;
}
var names = Parameters.Map(para => para.Name).AddFirst("closure");
int length = Parameters.Count;
System.Type[] types = new System.Type[length];
var parameters = new ParameterInfo[length];
for (int i = 0; i < Parameters.Count; i++)
{
var para = Parameters[i];
System.Type type = para.Type == null ? TypeProvider.AnyType : para.Type.ResolveType(context);
parameters[i] = new ParameterInfo(para.Name, i + 1, type, para.IsVarArgs);
types[i] = type;
}
// Emit First Argument
var lamdaVisit = new LamdaVisitor(names);
Body.Accept(lamdaVisit);
var parameterTypes = types.AddFirst(typeof(Closure));
var method = new System.Reflection.Emit.DynamicMethod("lambda_method", returnType, parameterTypes, true);
var methodGen = new Generators.DynamicMethodGenerator(method, parameters, target)
{
SyntaxBody = Body,
Context = context
};
methodGen.EmitParameterInfo();
var bodyGen = new MethodBodyGenerator(methodGen, method.GetILGenerator());
object[] values = new object[lamdaVisit.HoistedLocals.Count];
if (values.Length > 0)
{
int index = 0;
var field = typeof(Closure).GetField("Values");
foreach (var item in lamdaVisit.HoistedLocals)
{
var value = item.Value;
values[index] = value.Accept(visitor);
var variable = bodyGen.DeclareVariable(value.Type, item.Key);
bodyGen.LoadArgument(0);
bodyGen.LoadField(field);
bodyGen.LoadInt32(index);
bodyGen.LoadArrayElement(typeof(object));
bodyGen.UnboxObject(value.Type);
bodyGen.StoreVariable(variable);
index++;
}
}
bodyGen.Compile();
var delgateType = DelegateGen.MakeNewDelegate(types, returnType);
Type = delgateType;
return(method.CreateDelegate(delgateType, new Runtime.Closure(values)));
}
/// <summary>
/// Registers the type to library. This must be done for all types.
/// </summary>
/// <param name="module">The module base address where this type is in. If zero then it's current process main module.</param>
/// <param name="interfaceType">Type of the interface.</param>
/// <param name="implementationType">Type of the implementation.</param>
/// <param name="vtable">The virtual function table address.</param>
/// <param name="offsetInFullType">The offset of this vtable in full type.</param>
/// <exception cref="System.ArgumentNullException">
/// </exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// </exception>
/// <exception cref="System.ArgumentException">
/// </exception>
internal void RegisterType(IntPtr module, Type interfaceType, Type implementationType, IntPtr?vtable, int offsetInFullType)
{
if (module == IntPtr.Zero)
{
module = Main.GetMainTargetedModule().BaseAddress;
}
if (interfaceType == null)
{
throw new ArgumentNullException("interfaceType");
}
if (implementationType == null)
{
throw new ArgumentNullException("implementationType");
}
if (!interfaceType.IsInterface)
{
throw new ArgumentException("Interface type must be an interface!", "interfaceType");
}
if (interfaceType != typeof(IMemoryObject) && !typeof(IMemoryObject).IsAssignableFrom(interfaceType))
{
throw new ArgumentException("Interface type must inherit from IMemoryObject interface!", "interfaceType");
}
if (implementationType != typeof(MemoryObject) && !implementationType.IsSubclassOf(typeof(MemoryObject)))
{
throw new ArgumentException("Implementation type must inherit from MemoryObject!", "implementationType");
}
if (implementationType.IsAbstract)
{
throw new ArgumentException("Implementation type must not be abstract!", "implementationType");
}
if (!interfaceType.IsAssignableFrom(implementationType))
{
throw new ArgumentException("Interface type must be assignable from implementation! The implementation is `" + implementationType.Name + "` and interface is `" + interfaceType.Name + "`.");
}
if (offsetInFullType < 0)
{
throw new ArgumentOutOfRangeException("offsetInFullType");
}
// This is actually normal and should be allowed!
//if (offsetInFullType > 0 && !vtable.HasValue) throw new ArgumentException("Can't set offset in full type without setting vtable address! The implementation is `" + implementationType.Name + "` and interface is `" + interfaceType.Name + "`.");
TypeDescriptor t = null;
ConstructorInfo ci = null;
{
var cis = implementationType.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance).Where(q => !q.IsStatic && q.GetParameters().Length == 0).ToList();
if (cis.Count != 1)
{
throw new ArgumentException("A valid parameterless constructor was not found on type \"" + implementationType.Name + "\"!");
}
ci = cis[0];
}
t = new TypeDescriptor();
t.InterfaceType = interfaceType;
t.ImplementationType = implementationType;
t.VTable = vtable;
t.OffsetInFullType = offsetInFullType;
t.Module = module;
var builder = new System.Reflection.Emit.DynamicMethod("Creator", typeof(MemoryObject), new Type[0], true);
var generator = builder.GetILGenerator();
generator.Emit(System.Reflection.Emit.OpCodes.Newobj, ci);
generator.Emit(System.Reflection.Emit.OpCodes.Ret);
t.Creator = (TypeDescriptor.CreatorDelegate)builder.CreateDelegate(typeof(TypeDescriptor.CreatorDelegate));
List <TypeDescriptor> ls = null;
if (!this.Types.TypesByImplementation.TryGetValue(t.ImplementationType, out ls))
{
ls = new List <TypeDescriptor>(2);
this.Types.TypesByImplementation[t.ImplementationType] = ls;
}
ls.Add(t);
this.Types.All.Add(t);
if (vtable.HasValue)
{
if (this.Types.TypesByVTable.ContainsKey(vtable.Value))
{
throw new ArgumentException("Multiple type registrations with same vtable address! (" + t.InterfaceType.Name + ")");
}
this.Types.TypesByVTable[vtable.Value] = t;
this.Types.TypesWithVTable.Add(t.InterfaceType);
}
else
{
if (this.Types.TypesByNoVTable.ContainsKey(t.InterfaceType))
{
throw new ArgumentException("Multiple type registrations with same interface type and without vtable address! (" + t.InterfaceType.Name + ")");
}
this.Types.TypesByNoVTable[t.InterfaceType] = t;
}
}
/// <summary>
/// Generates IL for the script.
/// </summary>
public void GenerateCode()
{
// Generate the abstract syntax tree if it hasn't already been generated.
if (this.AbstractSyntaxTree == null)
{
Parse();
Optimize();
}
// Initialize global code-gen information.
var optimizationInfo = new OptimizationInfo(this.Engine);
optimizationInfo.AbstractSyntaxTree = this.AbstractSyntaxTree;
optimizationInfo.StrictMode = this.StrictMode;
optimizationInfo.MethodOptimizationHints = this.MethodOptimizationHints;
ILGenerator generator;
if (this.Options.EnableDebugging == false)
{
// DynamicMethod requires full trust because of generator.LoadMethodPointer in the
// FunctionExpression class.
// Create a new dynamic method.
System.Reflection.Emit.DynamicMethod dynamicMethod;
#if !SILVERLIGHT
if (ScriptEngine.LowPrivilegeEnvironment == false)
{
// High privilege path.
dynamicMethod = new System.Reflection.Emit.DynamicMethod(
GetMethodName(), // Name of the generated method.
typeof(object), // Return type of the generated method.
GetParameterTypes(), // Parameter types of the generated method.
typeof(MethodGenerator), // Owner type.
true); // Skip visibility checks.
// TODO: Figure out why long methods give BadImageFormatException in .NET 3.5 when generated using DynamicILInfo.
if (Environment.Version.Major >= 4)
generator = new DynamicILGenerator(dynamicMethod);
else
generator = new ReflectionEmitILGenerator(dynamicMethod.GetILGenerator());
}
else
{
#endif
// Low privilege path.
dynamicMethod = new System.Reflection.Emit.DynamicMethod(
GetMethodName(), // Name of the generated method.
typeof(object), // Return type of the generated method.
GetParameterTypes()); // Parameter types of the generated method.
generator = new ReflectionEmitILGenerator(dynamicMethod.GetILGenerator());
#if !SILVERLIGHT
}
#endif
if (this.Engine.EnableILAnalysis == true)
{
// Replace the generator with one that logs.
generator = new LoggingILGenerator(generator);
}
// Generate the IL.
GenerateCode(generator, optimizationInfo);
generator.Complete();
// Create a delegate from the method.
this.GeneratedMethod = new GeneratedMethod(dynamicMethod.CreateDelegate(GetDelegate()), optimizationInfo.NestedFunctions);
}
else
{
#if WINDOWS_PHONE
throw new NotImplementedException();
#else
// Debugging or low trust path.
ScriptEngine.ReflectionEmitModuleInfo reflectionEmitInfo = this.Engine.ReflectionEmitInfo;
if (reflectionEmitInfo == null)
{
reflectionEmitInfo = new ScriptEngine.ReflectionEmitModuleInfo();
// Create a dynamic assembly and module.
reflectionEmitInfo.AssemblyBuilder = System.Threading.Thread.GetDomain().DefineDynamicAssembly(
new System.Reflection.AssemblyName("Jurassic Dynamic Assembly"), System.Reflection.Emit.AssemblyBuilderAccess.Run);
// Mark the assembly as debuggable. This must be done before the module is created.
var debuggableAttributeConstructor = typeof(System.Diagnostics.DebuggableAttribute).GetConstructor(
new Type[] { typeof(System.Diagnostics.DebuggableAttribute.DebuggingModes) });
reflectionEmitInfo.AssemblyBuilder.SetCustomAttribute(
new System.Reflection.Emit.CustomAttributeBuilder(debuggableAttributeConstructor,
new object[] {
System.Diagnostics.DebuggableAttribute.DebuggingModes.DisableOptimizations |
System.Diagnostics.DebuggableAttribute.DebuggingModes.Default }));
// Create a dynamic module.
reflectionEmitInfo.ModuleBuilder = reflectionEmitInfo.AssemblyBuilder.DefineDynamicModule("Module", this.Options.EnableDebugging);
this.Engine.ReflectionEmitInfo = reflectionEmitInfo;
}
// Create a new type to hold our method.
var typeBuilder = reflectionEmitInfo.ModuleBuilder.DefineType("JavaScriptClass" + reflectionEmitInfo.TypeCount.ToString(), System.Reflection.TypeAttributes.Public | System.Reflection.TypeAttributes.Class);
reflectionEmitInfo.TypeCount++;
// Create a method.
var methodBuilder = typeBuilder.DefineMethod(this.GetMethodName(),
System.Reflection.MethodAttributes.HideBySig | System.Reflection.MethodAttributes.Static | System.Reflection.MethodAttributes.Public,
typeof(object), GetParameterTypes());
// Generate the IL for the method.
generator = new ReflectionEmitILGenerator(methodBuilder.GetILGenerator());
if (this.Engine.EnableILAnalysis == true)
{
// Replace the generator with one that logs.
generator = new LoggingILGenerator(generator);
}
if (this.Source.Path != null && this.Options.EnableDebugging == true)
{
// Initialize the debugging information.
optimizationInfo.DebugDocument = reflectionEmitInfo.ModuleBuilder.DefineDocument(this.Source.Path, COMHelpers.LanguageType, COMHelpers.LanguageVendor, COMHelpers.DocumentType);
methodBuilder.DefineParameter(1, System.Reflection.ParameterAttributes.None, "scriptEngine");
methodBuilder.DefineParameter(2, System.Reflection.ParameterAttributes.None, "scope");
methodBuilder.DefineParameter(3, System.Reflection.ParameterAttributes.None, "thisValue");
generator.MarkSequencePoint(optimizationInfo.DebugDocument, new SourceCodeSpan(1, 1, 1, 1));
}
GenerateCode(generator, optimizationInfo);
generator.Complete();
// Bake it.
var type = typeBuilder.CreateType();
var methodInfo = type.GetMethod(this.GetMethodName());
this.GeneratedMethod = new GeneratedMethod(Delegate.CreateDelegate(GetDelegate(), methodInfo), optimizationInfo.NestedFunctions);
#endif //WINDOWS_PHONE
}
if (this.Engine.EnableILAnalysis == true)
{
// Store the disassembled IL so it can be retrieved for analysis purposes.
this.GeneratedMethod.DisassembledIL = generator.ToString();
}
}
/// <summary>
/// Generates IL for the script.
/// </summary>
public void GenerateCode()
{
// Generate the abstract syntax tree if it hasn't already been generated.
if (this.AbstractSyntaxTree == null)
{
Parse();
Optimize();
}
// Initialize global code-gen information.
var optimizationInfo = new OptimizationInfo(this.Engine);
optimizationInfo.AbstractSyntaxTree = this.AbstractSyntaxTree;
optimizationInfo.StrictMode = this.StrictMode;
optimizationInfo.MethodOptimizationHints = this.MethodOptimizationHints;
optimizationInfo.FunctionName = this.GetStackName();
optimizationInfo.Source = this.Source;
ILGenerator generator;
if (this.Options.EnableDebugging == false)
{
// DynamicMethod requires full trust because of generator.LoadMethodPointer in the
// FunctionExpression class.
// Create a new dynamic method.
System.Reflection.Emit.DynamicMethod dynamicMethod;
#if !SILVERLIGHT
if (ScriptEngine.LowPrivilegeEnvironment == false)
{
// High privilege path.
dynamicMethod = new System.Reflection.Emit.DynamicMethod(
GetMethodName(), // Name of the generated method.
typeof(object), // Return type of the generated method.
GetParameterTypes(), // Parameter types of the generated method.
typeof(MethodGenerator), // Owner type.
true); // Skip visibility checks.
// TODO: Figure out why long methods give BadImageFormatException in .NET 3.5 when generated using DynamicILInfo.
if (Environment.Version.Major >= 4)
{
generator = new DynamicILGenerator(dynamicMethod);
}
else
{
generator = new ReflectionEmitILGenerator(dynamicMethod.GetILGenerator());
}
}
else
{
#endif
// Low privilege path.
dynamicMethod = new System.Reflection.Emit.DynamicMethod(
GetMethodName(), // Name of the generated method.
typeof(object), // Return type of the generated method.
GetParameterTypes()); // Parameter types of the generated method.
generator = new ReflectionEmitILGenerator(dynamicMethod.GetILGenerator());
#if !SILVERLIGHT
}
#endif
if (this.Engine.EnableILAnalysis == true)
{
// Replace the generator with one that logs.
generator = new LoggingILGenerator(generator);
}
// Initialization code will appear to come from line 1.
optimizationInfo.MarkSequencePoint(generator, new SourceCodeSpan(1, 1, 1, 1));
// Generate the IL.
GenerateCode(generator, optimizationInfo);
generator.Complete();
// Create a delegate from the method.
this.GeneratedMethod = new GeneratedMethod(dynamicMethod.CreateDelegate(GetDelegate()), optimizationInfo.NestedFunctions);
}
else
{
#if WINDOWS_PHONE
throw new NotImplementedException();
#else
// Debugging or low trust path.
ScriptEngine.ReflectionEmitModuleInfo reflectionEmitInfo = this.Engine.ReflectionEmitInfo;
if (reflectionEmitInfo == null)
{
reflectionEmitInfo = new ScriptEngine.ReflectionEmitModuleInfo();
// Create a dynamic assembly and module.
reflectionEmitInfo.AssemblyBuilder = System.Threading.Thread.GetDomain().DefineDynamicAssembly(
new System.Reflection.AssemblyName("Jurassic Dynamic Assembly"), System.Reflection.Emit.AssemblyBuilderAccess.Run);
// Mark the assembly as debuggable. This must be done before the module is created.
var debuggableAttributeConstructor = typeof(System.Diagnostics.DebuggableAttribute).GetConstructor(
new Type[] { typeof(System.Diagnostics.DebuggableAttribute.DebuggingModes) });
reflectionEmitInfo.AssemblyBuilder.SetCustomAttribute(
new System.Reflection.Emit.CustomAttributeBuilder(debuggableAttributeConstructor,
new object[] {
System.Diagnostics.DebuggableAttribute.DebuggingModes.DisableOptimizations |
System.Diagnostics.DebuggableAttribute.DebuggingModes.Default
}));
// Create a dynamic module.
reflectionEmitInfo.ModuleBuilder = reflectionEmitInfo.AssemblyBuilder.DefineDynamicModule("Module", this.Options.EnableDebugging);
this.Engine.ReflectionEmitInfo = reflectionEmitInfo;
}
// Create a new type to hold our method.
var typeBuilder = reflectionEmitInfo.ModuleBuilder.DefineType("JavaScriptClass" + reflectionEmitInfo.TypeCount.ToString(), System.Reflection.TypeAttributes.Public | System.Reflection.TypeAttributes.Class);
reflectionEmitInfo.TypeCount++;
// Create a method.
var methodBuilder = typeBuilder.DefineMethod(this.GetMethodName(),
System.Reflection.MethodAttributes.HideBySig | System.Reflection.MethodAttributes.Static | System.Reflection.MethodAttributes.Public,
typeof(object), GetParameterTypes());
// Generate the IL for the method.
generator = new ReflectionEmitILGenerator(methodBuilder.GetILGenerator());
if (this.Engine.EnableILAnalysis == true)
{
// Replace the generator with one that logs.
generator = new LoggingILGenerator(generator);
}
if (this.Source.Path != null && this.Options.EnableDebugging == true)
{
// Initialize the debugging information.
optimizationInfo.DebugDocument = reflectionEmitInfo.ModuleBuilder.DefineDocument(this.Source.Path, COMHelpers.LanguageType, COMHelpers.LanguageVendor, COMHelpers.DocumentType);
methodBuilder.DefineParameter(1, System.Reflection.ParameterAttributes.None, "scriptEngine");
methodBuilder.DefineParameter(2, System.Reflection.ParameterAttributes.None, "scope");
methodBuilder.DefineParameter(3, System.Reflection.ParameterAttributes.None, "thisValue");
}
optimizationInfo.MarkSequencePoint(generator, new SourceCodeSpan(1, 1, 1, 1));
GenerateCode(generator, optimizationInfo);
generator.Complete();
// Bake it.
var type = typeBuilder.CreateType();
var methodInfo = type.GetMethod(this.GetMethodName());
this.GeneratedMethod = new GeneratedMethod(Delegate.CreateDelegate(GetDelegate(), methodInfo), optimizationInfo.NestedFunctions);
#endif //WINDOWS_PHONE
}
if (this.Engine.EnableILAnalysis == true)
{
// Store the disassembled IL so it can be retrieved for analysis purposes.
this.GeneratedMethod.DisassembledIL = generator.ToString();
}
}
public static EmptyCtorDelegate GetConstructorMethodToCache(Type type)
{
if (type == typeof(string))
{
return(() => string.Empty);
}
else if (type.IsInterface)
{
if (type.HasGenericType())
{
var genericType = type.GetTypeWithGenericTypeDefinitionOfAny(
typeof(IDictionary <,>));
if (genericType != null)
{
var keyType = genericType.GetGenericArguments()[0];
var valueType = genericType.GetGenericArguments()[1];
return(GetConstructorMethodToCache(typeof(Dictionary <,>).MakeGenericType(keyType, valueType)));
}
genericType = type.GetTypeWithGenericTypeDefinitionOfAny(
typeof(IEnumerable <>),
typeof(ICollection <>),
typeof(IList <>));
if (genericType != null)
{
var elementType = genericType.GetGenericArguments()[0];
return(GetConstructorMethodToCache(typeof(List <>).MakeGenericType(elementType)));
}
}
}
else if (type.IsArray)
{
return(() => Array.CreateInstance(type.GetElementType(), 0));
}
else if (type.IsGenericTypeDefinition)
{
var genericArgs = type.GetGenericArguments();
var typeArgs = new Type[genericArgs.Length];
for (var i = 0; i < genericArgs.Length; i++)
{
typeArgs[i] = typeof(object);
}
var realizedType = type.MakeGenericType(typeArgs);
return(realizedType.CreateInstance);
}
var emptyCtor = type.GetConstructor(Type.EmptyTypes);
if (emptyCtor != null)
{
if (PclExport.Instance.SupportsEmit)
{
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes,
typeof(ReflectionExtensions).Module, true);
var ilgen = dm.GetILGenerator();
ilgen.Emit(System.Reflection.Emit.OpCodes.Nop);
ilgen.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyCtor);
ilgen.Emit(System.Reflection.Emit.OpCodes.Ret);
return((EmptyCtorDelegate)dm.CreateDelegate(typeof(EmptyCtorDelegate)));
}
return(() => Activator.CreateInstance(type));
}
// Anonymous types don't have empty constructors
return(() => FormatterServices.GetUninitializedObject(type));
}
static System.Func<StringTemplate, IStringTemplateWriter, bool> GetEvaluator( ASTExpr chunk, ITree condition )
{
if ( EnableDynamicMethods )
{
try
{
DynamicMethod method = null;
#if CACHE_FUNCTORS
if ( !_methods.TryGetValue( condition, out method ) )
#endif
{
Type[] parameterTypes = { typeof( ASTExpr ), typeof( StringTemplate ), typeof( IStringTemplateWriter ) };
method = new DynamicMethod( "ConditionEvaluator" + _evaluatorNumber, typeof( bool ), parameterTypes, typeof( ConditionalExpr ), true );
method.DefineParameter( 1, ParameterAttributes.None, "chunk" );
method.DefineParameter( 2, ParameterAttributes.None, "self" );
method.DefineParameter( 3, ParameterAttributes.None, "writer" );
_evaluatorNumber++;
var gen = method.GetILGenerator();
ActionEvaluator evalCompiled = new ActionEvaluator( null, chunk, null, condition );
evalCompiled.ifConditionCompiled( gen );
gen.Emit( OpCodes.Ret );
#if CACHE_FUNCTORS
_methods[condition] = method;
#endif
}
var dynamicEvaluator = (System.Func<StringTemplate, IStringTemplateWriter, bool>)method.CreateDelegate( typeof( System.Func<StringTemplate, IStringTemplateWriter, bool> ), chunk );
return dynamicEvaluator;
}
catch
{
// fall back to functional (or interpreted) version
}
}
if ( EnableFunctionalMethods )
{
try
{
ActionEvaluator evalFunctional = new ActionEvaluator( null, chunk, null, condition );
var functionalEvaluator = evalFunctional.ifConditionFunctional();
HoldsConditionFuncAndChunk holder = new HoldsConditionFuncAndChunk()
{
func = functionalEvaluator,
chunk = chunk
};
return (System.Func<StringTemplate, IStringTemplateWriter, bool>)System.Delegate.CreateDelegate( typeof( System.Func<StringTemplate, IStringTemplateWriter, bool> ), holder, typeof( ConditionalExpr ).GetMethod( "CallFunctionalConditionEvaluator" ) );
}
catch
{
// fall back to interpreted version
}
}
return new System.Func<StringTemplate, IStringTemplateWriter, bool>( ( self, @out ) =>
{
ActionEvaluator eval = new ActionEvaluator( self, chunk, @out, condition );
return eval.ifCondition();
} );
}
/// <summary>
/// Creates the IQueryable instance for the given resource set and returns it
/// </summary>
/// <param name="resourceContainer">resource set for which IQueryable instance needs to be created</param>
/// <returns>returns the IQueryable instance for the given resource set</returns>
protected override IQueryable GetResourceContainerInstance(ResourceSet resourceContainer)
{
Debug.Assert(resourceContainer != null, "resourceContainer != null");
if (resourceContainer.ReadFromContextDelegate == null)
{
PropertyInfo propertyInfo = this.Type.GetProperty(resourceContainer.Name, WebUtil.PublicInstanceBindingFlags);
MethodInfo getValueMethod = propertyInfo.GetGetMethod();
// return ((TheContext)arg0).get_Property();
Type[] parameterTypes = new Type[] { typeof(object) };
System.Reflection.Emit.DynamicMethod readerMethod = new System.Reflection.Emit.DynamicMethod("queryable_reader", typeof(IQueryable), parameterTypes, false);
var generator = readerMethod.GetILGenerator();
generator.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
generator.Emit(System.Reflection.Emit.OpCodes.Castclass, this.Type);
generator.Emit(System.Reflection.Emit.OpCodes.Call, getValueMethod);
generator.Emit(System.Reflection.Emit.OpCodes.Ret);
resourceContainer.ReadFromContextDelegate = (Func<object, IQueryable>)readerMethod.CreateDelegate(typeof(Func<object, IQueryable>));
}
Debug.Assert(resourceContainer.ReadFromContextDelegate != null, "resourceContainer.ReadFromContextDelegate != null");
return resourceContainer.ReadFromContextDelegate(this.CurrentDataSource);
}
private ItemInfo GetItemInfo(Type type, Type key, Type value, System.Reflection.MethodInfo setter)
{
var method = new System.Reflection.Emit.DynamicMethod("Add", null, new Type[] { typeof(object), typeof(JsonParser), typeof(int), typeof(int) }, typeof(string), true);
var sBrace = typeof(JsonParser).GetMethod("SBrace", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
var eBrace = typeof(JsonParser).GetMethod("EBrace", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
var kColon = typeof(JsonParser).GetMethod("KColon", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
var sComma = typeof(JsonParser).GetMethod("SComma", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
var vParse = GetParserParse(GetParseName(value));
var kParse = GetParserParse(GetParseName(key));
var il = method.GetILGenerator();
il.DeclareLocal(key);
il.DeclareLocal(value);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, sBrace);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, kColon);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_3);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, kParse);
if (key.IsValueType && (kParse.ReturnType == typeof(object)))
{
il.Emit(System.Reflection.Emit.OpCodes.Unbox_Any, key);
}
if (kParse.ReturnType.IsValueType && (key == typeof(object)))
{
il.Emit(System.Reflection.Emit.OpCodes.Box, kParse.ReturnType);
}
il.Emit(System.Reflection.Emit.OpCodes.Stloc_0);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, sComma);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, kColon);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_2);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, vParse);
if (value.IsValueType && (vParse.ReturnType == typeof(object)))
{
il.Emit(System.Reflection.Emit.OpCodes.Unbox_Any, value);
}
if (vParse.ReturnType.IsValueType && (value == typeof(object)))
{
il.Emit(System.Reflection.Emit.OpCodes.Box, vParse.ReturnType);
}
il.Emit(System.Reflection.Emit.OpCodes.Stloc_1);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, eBrace);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
il.Emit(System.Reflection.Emit.OpCodes.Ldloc_0);
il.Emit(System.Reflection.Emit.OpCodes.Ldloc_1);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, setter);
il.Emit(System.Reflection.Emit.OpCodes.Ret);
return(new ItemInfo {
Type = type, Name = String.Empty, Set = (Action <object, JsonParser, int, int>)method.CreateDelegate(typeof(Action <object, JsonParser, int, int>))
});
}
private Action<object, object> CreateDispatchDelegate(Type subscriberType, MethodInfo methodInfo)
{
var dynamicMethod = new System.Reflection.Emit.DynamicMethod(
methodInfo.Name,
typeof(void),
new Type[] { typeof(object), typeof(object) });
var il = dynamicMethod.GetILGenerator();
il.Emit(System.Reflection.Emit.OpCodes.Nop);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
il.Emit(System.Reflection.Emit.OpCodes.Isinst, subscriberType);
il.Emit(System.Reflection.Emit.OpCodes.Ldarg_1);
il.Emit(System.Reflection.Emit.OpCodes.Isinst, methodInfo.GetParameters()[0].ParameterType);
il.Emit(System.Reflection.Emit.OpCodes.Callvirt, methodInfo); // TODO avoid
il.Emit(System.Reflection.Emit.OpCodes.Nop);
il.Emit(System.Reflection.Emit.OpCodes.Ret);
var methodDelegate = (Action<object, object>)dynamicMethod.CreateDelegate(typeof(Action<object, object>));
return methodDelegate;
}
/// <summary>
/// Creates a delegate that does type conversion and calls the bound method.
/// </summary>
/// <param name="argumentCount"> The number of arguments that will be passed to the delegate. </param>
/// <returns> A delegate that does type conversion and calls the method represented by this
/// object. </returns>
/// <remarks> No caching of the result occurs. </remarks>
private BinderDelegate CreateDelegateCore(int argumentCount)
{
// Create a new dynamic method.
// Full trust only - skips visibility checks.
System.Reflection.Emit.DynamicMethod dm = new System.Reflection.Emit.DynamicMethod(
string.Format("binder_for_{0}", this.FullName), // Name of the generated method.
typeof(object), // Return type of the generated method.
new Type[] { typeof(ScriptEngine), typeof(object), typeof(object[]) }, // Parameter types of the generated method.
typeof(JSBinder), // Owner type.
true); // Skips visibility checks.
ILGenerator generator;
#if __MonoCS__
generator = new ReflectionEmitILGenerator(dm.GetILGenerator());
#else
generator = new DynamicILGenerator(dm);
#endif
// Generate the body of the method.
GenerateStub(generator, argumentCount);
// Convert the DynamicMethod to a delegate.
return (BinderDelegate)dm.CreateDelegate(typeof(BinderDelegate));
}
/// <summary>
/// Creates a delegate that does type conversion and calls the bound method.
/// </summary>
/// <param name="argumentCount"> The number of arguments that will be passed to the delegate. </param>
/// <returns> A delegate that does type conversion and calls the method represented by this
/// object. </returns>
/// <remarks> No caching of the result occurs. </remarks>
private BinderDelegate CreateDelegateCore(int argumentCount)
{
// Create a new dynamic method.
System.Reflection.Emit.DynamicMethod dm;
ILGenerator generator;
#if !SILVERLIGHT
if (ScriptEngine.LowPrivilegeEnvironment == false)
{
// Full trust only - skips visibility checks.
dm = new System.Reflection.Emit.DynamicMethod(
string.Format("binder_for_{0}", this.FullName), // Name of the generated method.
typeof(object), // Return type of the generated method.
new Type[] { typeof(ScriptEngine), typeof(object), typeof(object[]) }, // Parameter types of the generated method.
typeof(JSBinder), // Owner type.
true); // Skips visibility checks.
generator = new DynamicILGenerator(dm);
}
else
{
#endif
// Partial trust / silverlight.
dm = new System.Reflection.Emit.DynamicMethod(
string.Format("binder_for_{0}", this.FullName), // Name of the generated method.
typeof(object), // Return type of the generated method.
new Type[] { typeof(ScriptEngine), typeof(object), typeof(object[]) }); // Parameter types of the generated method.
generator = new ReflectionEmitILGenerator(dm.GetILGenerator());
#if !SILVERLIGHT
}
#endif
// Generate the body of the method.
GenerateStub(generator, argumentCount);
// Convert the DynamicMethod to a delegate.
return (BinderDelegate)dm.CreateDelegate(typeof(BinderDelegate));
}
public static EmptyCtorDelegate GetConstructorMethodToCache(Type type)
{
if (type.IsInterface)
{
if (type.HasGenericType())
{
var genericType = type.GetTypeWithGenericTypeDefinitionOfAny(
typeof(IDictionary <,>));
if (genericType != null)
{
var keyType = genericType.GenericTypeArguments()[0];
var valueType = genericType.GenericTypeArguments()[1];
return(GetConstructorMethodToCache(typeof(Dictionary <,>).MakeGenericType(keyType, valueType)));
}
genericType = type.GetTypeWithGenericTypeDefinitionOfAny(
typeof(IEnumerable <>),
typeof(ICollection <>),
typeof(IList <>));
if (genericType != null)
{
var elementType = genericType.GenericTypeArguments()[0];
return(GetConstructorMethodToCache(typeof(List <>).MakeGenericType(elementType)));
}
}
}
else if (type.IsArray)
{
return(() => Array.CreateInstance(type.GetElementType(), 0));
}
else if (type.IsGenericTypeDefinition)
{
var genericArgs = type.GetGenericArguments();
var typeArgs = new Type[genericArgs.Length];
for (var i = 0; i < genericArgs.Length; i++)
{
typeArgs[i] = typeof(object);
}
var realizedType = type.MakeGenericType(typeArgs);
return(realizedType.CreateInstance);
}
var emptyCtor = type.GetEmptyConstructor();
if (emptyCtor != null)
{
#if MONOTOUCH || c || XBOX || NETFX_CORE
return(() => Activator.CreateInstance(type));
#elif WINDOWS_PHONE
return(Expression.Lambda <EmptyCtorDelegate>(Expression.New(type)).Compile());
#else
#if SILVERLIGHT
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes);
#else
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes, typeof(ReflectionExtensions).Module, true);
#endif
var ilgen = dm.GetILGenerator();
ilgen.Emit(System.Reflection.Emit.OpCodes.Nop);
ilgen.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyCtor);
ilgen.Emit(System.Reflection.Emit.OpCodes.Ret);
return((EmptyCtorDelegate)dm.CreateDelegate(typeof(EmptyCtorDelegate)));
#endif
}
#if (SILVERLIGHT && !WINDOWS_PHONE) || XBOX
return(() => Activator.CreateInstance(type));
#elif WINDOWS_PHONE
return(Expression.Lambda <EmptyCtorDelegate>(Expression.New(type)).Compile());
#else
if (type == typeof(string))
{
return(() => String.Empty);
}
//Anonymous types don't have empty constructors
return(() => FormatterServices.GetUninitializedObject(type));
#endif
}
public static EmptyCtorDelegate GetConstructorMethodToCache(Type type)
{
var emptyCtor = type.GetConstructor(Type.EmptyTypes);
if (emptyCtor != null)
{
var dm = new System.Reflection.Emit.DynamicMethod("MyCtor", type, Type.EmptyTypes, typeof(ReflectionExtensions).Module, true);
var ilgen = dm.GetILGenerator();
ilgen.Emit(System.Reflection.Emit.OpCodes.Nop);
ilgen.Emit(System.Reflection.Emit.OpCodes.Newobj, emptyCtor);
ilgen.Emit(System.Reflection.Emit.OpCodes.Ret);
return (EmptyCtorDelegate)dm.CreateDelegate(typeof(EmptyCtorDelegate));
}
#if SILVERLIGHT
return () => Activator.CreateInstance(type);
#else
//Anonymous types don't have empty constructors
return () => FormatterServices.GetUninitializedObject(type);
#endif
}
static System.Func <StringTemplate, IStringTemplateWriter, bool> GetEvaluator(ASTExpr chunk, ITree condition)
{
if (EnableDynamicMethods)
{
try
{
DynamicMethod method = null;
#if CACHE_FUNCTORS
if (!_methods.TryGetValue(condition, out method))
#endif
{
Type[] parameterTypes = { typeof(ASTExpr), typeof(StringTemplate), typeof(IStringTemplateWriter) };
method = new DynamicMethod("ConditionEvaluator" + _evaluatorNumber, typeof(bool), parameterTypes, typeof(ConditionalExpr), true);
#if !NETSTANDARD2_0
method.DefineParameter(1, ParameterAttributes.None, "chunk");
method.DefineParameter(2, ParameterAttributes.None, "self");
method.DefineParameter(3, ParameterAttributes.None, "writer");
#endif
_evaluatorNumber++;
var gen = method.GetILGenerator();
ActionEvaluator evalCompiled = new ActionEvaluator(null, chunk, null, condition);
evalCompiled.ifConditionCompiled(gen);
gen.Emit(OpCodes.Ret);
#if CACHE_FUNCTORS
_methods[condition] = method;
#endif
}
var dynamicEvaluator = (System.Func <StringTemplate, IStringTemplateWriter, bool>)method.CreateDelegate(typeof(System.Func <StringTemplate, IStringTemplateWriter, bool>), chunk);
return(dynamicEvaluator);
}
catch
{
// fall back to functional (or interpreted) version
}
}
if (EnableFunctionalMethods)
{
try
{
ActionEvaluator evalFunctional = new ActionEvaluator(null, chunk, null, condition);
var functionalEvaluator = evalFunctional.ifConditionFunctional();
HoldsConditionFuncAndChunk holder = new HoldsConditionFuncAndChunk()
{
func = functionalEvaluator,
chunk = chunk
};
return((System.Func <StringTemplate, IStringTemplateWriter, bool>)System.Delegate.CreateDelegate(typeof(System.Func <StringTemplate, IStringTemplateWriter, bool>), holder, typeof(ConditionalExpr).GetMethod("CallFunctionalConditionEvaluator")));
}
catch
{
// fall back to interpreted version
}
}
return(new System.Func <StringTemplate, IStringTemplateWriter, bool>((self, @out) =>
{
ActionEvaluator eval = new ActionEvaluator(self, chunk, @out, condition);
return eval.ifCondition();
}));
}
internal static object Creator(this Type type, bool validateArgs = true, params object[] parameters)
{
try
{
var key = type.FullName + string.Join("", parameters?.Select(x => x.GetType().FullName));
var constructor = type.GetConstructorInfo(parameters ?? new object[0]);
if (constructor == null && parameters?.Length > 0)
{
constructor = type.GetConstructorInfo(new object[0]);
}
if (constructor != null)
{
var constParam = constructor.GetParameters();
if (validateArgs && (parameters?.Any() ?? false))
{
for (var i = 0; i < parameters.Length; i++)
{
if (constParam.Length <= i)
{
continue;
}
if (constParam[i].ParameterType != parameters[i].GetType())
{
try
{
parameters[i] = Convert.ChangeType(parameters[i], constParam[i].ParameterType);
}
catch
{
// Ignore
}
}
}
}
#if NETSTANDARD2_0 || NETSTANDARD1_3 || NETSTANDARD1_5
if (!constParam.Any())
{
if (CachedConstructor.ContainsKey(key))
{
return(CachedConstructor[key]());
}
}
else if (CachedConstructorWithParameter.ContainsKey(key))
{
return(CachedConstructorWithParameter[key](parameters));
}
if (!(parameters?.Any() ?? false))
{
return(CachedConstructor.GetOrAdd(key, Expression.Lambda <Func <object> >(Expression.New(type)).Compile())());
}
else
{
// Create a single param of type object[].
ParameterExpression param = Expression.Parameter(typeof(object[]), "args");
// Pick each arg from the params array and create a typed expression of them.
Expression[] argsExpressions = new Expression[constParam.Length];
for (int i = 0; i < constParam.Length; i++)
{
Expression index = Expression.Constant(i);
Type paramType = constParam[i].ParameterType;
Expression paramAccessorExp = Expression.ArrayIndex(param, index);
Expression paramCastExp = Expression.Convert(paramAccessorExp, paramType);
argsExpressions[i] = paramCastExp;
}
return(CachedConstructorWithParameter.GetOrAdd(key, Expression.Lambda <Func <object[], object> >(Expression.New(constructor, argsExpressions), param).Compile())(parameters));
}
#else
if (!constParam.Any())
{
if (CachedDynamicMethod.ContainsKey(key))
{
return(CachedDynamicMethod[key]());
}
}
else if (CachedDynamicMethodWithParameters.ContainsKey(key))
{
return(CachedDynamicMethodWithParameters[key](parameters));
}
lock (CachedDynamicMethod)
{
var dynamicMethod = new System.Reflection.Emit.DynamicMethod("CreateInstance", type, (constParam.Any() ? new Type[] { typeof(object[]) } : Type.EmptyTypes), true);
System.Reflection.Emit.ILGenerator ilGenerator = dynamicMethod.GetILGenerator();
if (constructor.GetParameters().Any())
{
for (int i = 0; i < constParam.Length; i++)
{
Type paramType = constParam[i].ParameterType;
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ldarg_0); // Push array (method argument)
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ldc_I4, i); // Push i
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ldelem_Ref); // Pop array and i and push array[i]
if (paramType.IsValueType)
{
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Unbox_Any, paramType); // Cast to Type t
}
else
{
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Castclass, paramType); //Cast to Type t
}
}
}
//ilGenerator.Emit(System.Reflection.Emit.OpCodes.Nop);
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Newobj, constructor);
//ilGenerator.Emit(System.Reflection.Emit.OpCodes.Stloc_1); // nothing
ilGenerator.Emit(System.Reflection.Emit.OpCodes.Ret);
if (!constParam.Any())
{
return(CachedDynamicMethod.GetOrAdd(key, (ObjectActivator)dynamicMethod.CreateDelegate(typeof(ObjectActivator)))());
}
else
{
return(CachedDynamicMethodWithParameters.GetOrAdd(key, (ObjectActivatorWithParameters)dynamicMethod.CreateDelegate(typeof(ObjectActivatorWithParameters)))(parameters));
}
}
#endif
}
else
{
#if !NETSTANDARD1_3
return(FormatterServices.GetUninitializedObject(type));
#else
try
{
if (CachedConstructor.ContainsKey(key))
{
return(CachedConstructor[key]());
}
return(CachedConstructor.GetOrAdd(key, Expression.Lambda <Func <object> >(Expression.New(type)).Compile())());
}
catch
{
throw new Exception("DeepClonerError: Default constructor is require for NETSTANDARD1_3 for type " + type.FullName);
}
#endif
}
}
catch (Exception e)
{
throw e;
}
}
