зеркало из https://github.com/mono/ikvm-fork.git
97 строки
3.4 KiB
C#
97 строки
3.4 KiB
C#
/*
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Copyright (C) 2009 Jeroen Frijters
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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Jeroen Frijters
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jeroen@frijters.net
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*/
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using System;
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#if STATIC_COMPILER
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using IKVM.Reflection;
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using IKVM.Reflection.Emit;
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using Type = IKVM.Reflection.Type;
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#else
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using System.Reflection;
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using System.Reflection.Emit;
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#endif
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using System.Diagnostics;
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namespace IKVM.Internal
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{
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static class RuntimeHelperTypes
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{
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private static Type classLiteralType;
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private static FieldInfo classLiteralField;
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internal static FieldInfo GetClassLiteralField(Type type)
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{
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Debug.Assert(type != Types.Void);
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if (classLiteralType == null)
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{
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#if STATIC_COMPILER
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classLiteralType = JVM.CoreAssembly.GetType("ikvm.internal.ClassLiteral`1");
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#elif !FIRST_PASS
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classLiteralType = typeof(ikvm.@internal.ClassLiteral<>);
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#endif
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}
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#if !STATIC_COMPILER
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if (!IsTypeBuilder(type))
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{
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return classLiteralType.MakeGenericType(type).GetField("Value", BindingFlags.Public | BindingFlags.Static);
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}
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#endif
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if (classLiteralField == null)
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{
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classLiteralField = classLiteralType.GetField("Value", BindingFlags.Public | BindingFlags.Static);
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}
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return TypeBuilder.GetField(classLiteralType.MakeGenericType(type), classLiteralField);
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}
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private static bool IsTypeBuilder(Type type)
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{
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return type is TypeBuilder || (type.HasElementType && IsTypeBuilder(type.GetElementType()));
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}
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#if STATIC_COMPILER
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internal static void Create(CompilerClassLoader ccl)
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{
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EmitClassLiteral(ccl);
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}
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private static void EmitClassLiteral(CompilerClassLoader ccl)
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{
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TypeBuilder tb = ccl.GetTypeWrapperFactory().ModuleBuilder.DefineType("ikvm.internal.ClassLiteral`1", TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.Abstract | TypeAttributes.Class | TypeAttributes.BeforeFieldInit);
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GenericTypeParameterBuilder typeParam = tb.DefineGenericParameters("T")[0];
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Type classType = CoreClasses.java.lang.Class.Wrapper.TypeAsSignatureType;
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classLiteralField = tb.DefineField("Value", classType, FieldAttributes.Public | FieldAttributes.Static | FieldAttributes.InitOnly);
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CodeEmitter ilgen = CodeEmitter.Create(ReflectUtil.DefineTypeInitializer(tb));
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ilgen.Emit(OpCodes.Ldtoken, typeParam);
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ilgen.Emit(OpCodes.Call, Types.Type.GetMethod("GetTypeFromHandle", new Type[] { Types.RuntimeTypeHandle }));
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MethodWrapper mw = CoreClasses.java.lang.Class.Wrapper.GetMethodWrapper("<init>", "(Lcli.System.Type;)V", false);
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mw.Link();
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mw.EmitNewobj(ilgen);
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ilgen.Emit(OpCodes.Stsfld, classLiteralField);
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ilgen.Emit(OpCodes.Ret);
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ilgen.DoEmit();
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classLiteralType = tb.CreateType();
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}
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#endif
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}
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}
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