C# SourceInfo.Load方法代码示例

 internal void ILGenLoad(string source, Type type)
 {
     if (source.StartsWith("[email protected]", StringComparison.Ordinal))
     {
         System.Diagnostics.Debug.Assert(memberInfos.ContainsKey(source.Substring(3)));
         MemberInfo memInfo = memberInfos[source.Substring(3)];
         ilg.LoadMember(ilg.GetVariable("o"), memInfo);
         if (type != null)
         {
             Type memType = (memInfo is FieldInfo) ? ((FieldInfo)memInfo).FieldType : ((PropertyInfo)memInfo).PropertyType;
             ilg.ConvertValue(memType, type);
         }
     }
     else
     {
         SourceInfo info = new SourceInfo(source, null, null, null, ilg);
         info.Load(type);
     }
 }

 internal void WriteArrayLocalDecl(string typeName, string variableName, SourceInfo initValue, TypeDesc arrayTypeDesc)
 {
     Debug.Assert(typeName == arrayTypeDesc.CSharpName || typeName == arrayTypeDesc.CSharpName + "[]");
     Type localType = (typeName == arrayTypeDesc.CSharpName) ? arrayTypeDesc.Type : arrayTypeDesc.Type.MakeArrayType();
     // This may need reused varialble to get code compat?
     LocalBuilder local = initValue.ILG.DeclareOrGetLocal(localType, variableName);
     if (initValue != null)
     {
         initValue.Load(local.LocalType);
         initValue.ILG.Stloc(local);
     }
 }

        private void WriteQualifiedNameElement(string name, string ns, object defaultValue, SourceInfo source, bool nullable, TypeMapping mapping)
        {
            bool hasDefault = defaultValue != null && !Globals.IsDBNullValue(defaultValue);
            if (hasDefault)
            {
                throw Globals.NotSupported("XmlQualifiedName DefaultValue not supported.  Fail in WriteValue()");
            }
            List<Type> argTypes = new List<Type>();
            ilg.Ldarg(0);
            ilg.Ldstr(GetCSharpString(name));
            argTypes.Add(typeof(string));
            if (ns != null)
            {
                ilg.Ldstr(GetCSharpString(ns));
                argTypes.Add(typeof(string));
            }
            source.Load(mapping.TypeDesc.Type);
            argTypes.Add(mapping.TypeDesc.Type);

            MethodInfo XmlSerializationWriter_WriteXXX = typeof(XmlSerializationWriter).GetMethod(
                 nullable ? ("WriteNullableQualifiedNameLiteral") : "WriteElementQualifiedName",
                 CodeGenerator.InstanceBindingFlags,
                 argTypes.ToArray()
                 );
            ilg.Call(XmlSerializationWriter_WriteXXX);

            if (hasDefault)
            {
                throw Globals.NotSupported("XmlQualifiedName DefaultValue not supported.  Fail in WriteValue()");
            }
        }

 internal void WriteLocalDecl(string variableName, SourceInfo initValue)
 {
     Type localType = initValue.Type;
     LocalBuilder localA = initValue.ILG.DeclareOrGetLocal(localType, variableName);
     if (initValue.Source != null)
     {
         if (initValue == "null")
         {
             initValue.ILG.Load(null);
         }
         else
         {
             if (initValue.Arg.StartsWith("[email protected]", StringComparison.Ordinal))
             {
                 Debug.Assert(initValue.MemberInfo != null);
                 Debug.Assert(initValue.MemberInfo.Name == initValue.Arg.Substring(3));
                 initValue.ILG.LoadMember(initValue.ILG.GetLocal("o"), initValue.MemberInfo);
             }
             else if (initValue.Source.EndsWith("]", StringComparison.Ordinal))
             {
                 initValue.Load(initValue.Type);
             }
             else if (initValue.Source == "fixup.Source" || initValue.Source == "e.Current")
             {
                 String[] vars = initValue.Source.Split('.');
                 object fixup = initValue.ILG.GetVariable(vars[0]);
                 PropertyInfo propInfo = initValue.ILG.GetVariableType(fixup).GetProperty(vars[1]);
                 initValue.ILG.LoadMember(fixup, propInfo);
                 initValue.ILG.ConvertValue(propInfo.PropertyType, localA.LocalType);
             }
             else
             {
                 object sVar = initValue.ILG.GetVariable(initValue.Arg);
                 initValue.ILG.Load(sVar);
                 initValue.ILG.ConvertValue(initValue.ILG.GetVariableType(sVar), localA.LocalType);
             }
         }
         initValue.ILG.Stloc(localA);
     }
 }

 internal void WriteInstanceOf(SourceInfo source, Type type, CodeGenerator ilg)
 {
     {
         source.Load(typeof(object));
         ilg.IsInst(type);
         ilg.Load(null);
         ilg.Cne();
         return;
     }
 }

 private void WriteCheckDefault(SourceInfo source, object value, bool isNullable)
 {
     if (value is string && ((string)value).Length == 0)
     {
         // special case for string compare
         Label labelEnd = ilg.DefineLabel();
         Label labelFalse = ilg.DefineLabel();
         Label labelTrue = ilg.DefineLabel();
         source.Load(typeof(string));
         if (isNullable)
             // check == null with false
             ilg.Brfalse(labelTrue);
         else
             //check != null with false
             ilg.Brfalse(labelFalse);
         MethodInfo String_get_Length = typeof(string).GetMethod(
             "get_Length",
             CodeGenerator.InstanceBindingFlags,
             Array.Empty<Type>()
             );
         source.Load(typeof(string));
         ilg.Call(String_get_Length);
         ilg.Ldc(0);
         ilg.Cne();
         ilg.Br(labelEnd);
         if (isNullable)
         {
             ilg.MarkLabel(labelTrue);
             ilg.Ldc(true);
         }
         else
         {
             ilg.MarkLabel(labelFalse);
             ilg.Ldc(false);
         }
         ilg.MarkLabel(labelEnd);
         ilg.If();
     }
     else
     {
         if (value == null)
         {
             source.Load(typeof(object));
             ilg.Load(null);
             ilg.Cne();
         }
         else if (value.GetType().GetTypeInfo().IsPrimitive)
         {
             source.Load(null);
             ilg.Ldc(Convert.ChangeType(value, source.Type, CultureInfo.InvariantCulture));
             ilg.Cne();
         }
         else
         {
             Type valueType = value.GetType();
             source.Load(valueType);
             ilg.Ldc(value is string ? GetCSharpString((string)value) : value);
             MethodInfo op_Inequality = valueType.GetMethod(
                         "op_Inequality",
                         CodeGenerator.StaticBindingFlags,
                         new Type[] { valueType, valueType }
                         );
             if (op_Inequality != null)
                 ilg.Call(op_Inequality);
             else
                 ilg.Cne();
         }
         ilg.If();
     }
 }

 private void WriteChoiceTypeCheck(SourceInfo source, string fullTypeName, ChoiceIdentifierAccessor choice, string enumName, TypeDesc typeDesc)
 {
     Label labelFalse = ilg.DefineLabel();
     Label labelEnd = ilg.DefineLabel();
     source.Load(typeof(object));
     ilg.Load(null);
     ilg.Beq(labelFalse);
     WriteInstanceOf(source, typeDesc.Type);
     // Negative
     ilg.Ldc(false);
     ilg.Ceq();
     ilg.Br(labelEnd);
     ilg.MarkLabel(labelFalse);
     ilg.Ldc(false);
     ilg.MarkLabel(labelEnd);
     ilg.If();
     MethodInfo XmlSerializationWriter_CreateMismatchChoiceException = typeof(XmlSerializationWriter).GetMethod(
         "CreateMismatchChoiceException",
         CodeGenerator.InstanceBindingFlags,
         new Type[] { typeof(String), typeof(String), typeof(String) }
         );
     ilg.Ldarg(0);
     ilg.Ldstr(GetCSharpString(typeDesc.FullName));
     ilg.Ldstr(GetCSharpString(choice.MemberName));
     ilg.Ldstr(GetCSharpString(enumName));
     ilg.Call(XmlSerializationWriter_CreateMismatchChoiceException);
     ilg.Throw();
     ilg.EndIf();
 }

        private void WritePrimitive(string method, string name, string ns, object defaultValue, SourceInfo source, TypeMapping mapping, bool writeXsiType, bool isElement, bool isNullable)
        {
            TypeDesc typeDesc = mapping.TypeDesc;
            bool hasDefault = defaultValue != null && !Globals.IsDBNullValue(defaultValue) && mapping.TypeDesc.HasDefaultSupport;
            if (hasDefault)
            {
                if (mapping is EnumMapping)
                {
#if DEBUG
                    // use exception in the place of Debug.Assert to avoid throwing asserts from a server process such as aspnet_ewp.exe
                    if (defaultValue.GetType() != typeof(string)) throw new InvalidOperationException(SR.Format(SR.XmlInternalErrorDetails, name + " has invalid default type " + defaultValue.GetType().Name));
#endif

                    source.Load(mapping.TypeDesc.Type);
                    string enumDefaultValue = null;
                    if (((EnumMapping)mapping).IsFlags)
                    {
                        string[] values = ((string)defaultValue).Split(null);
                        for (int i = 0; i < values.Length; i++)
                        {
                            if (values[i] == null || values[i].Length == 0)
                                continue;
                            if (i > 0)
                                enumDefaultValue += ", ";
                            enumDefaultValue += values[i];
                        }
                    }
                    else
                    {
                        enumDefaultValue = (string)defaultValue;
                    }
                    ilg.Ldc(Enum.Parse(mapping.TypeDesc.Type, enumDefaultValue, false));
                    ilg.If(Cmp.NotEqualTo); // " != "
                }
                else
                {
                    WriteCheckDefault(source, defaultValue, isNullable);
                }
            }
            List<Type> argTypes = new List<Type>();
            ilg.Ldarg(0);
            argTypes.Add(typeof(String));
            ilg.Ldstr(GetCSharpString(name));
            if (ns != null)
            {
                argTypes.Add(typeof(String));
                ilg.Ldstr(GetCSharpString(ns));
            }
            Type argType;

            if (mapping is EnumMapping)
            {
                WriteEnumValue((EnumMapping)mapping, source, out argType);
                argTypes.Add(argType);
            }
            else
            {
                WritePrimitiveValue(typeDesc, source, out argType);
                argTypes.Add(argType);
            }

            if (writeXsiType)
            {
                argTypes.Add(typeof(XmlQualifiedName));
                ConstructorInfo XmlQualifiedName_ctor = typeof(XmlQualifiedName).GetConstructor(
                    CodeGenerator.InstanceBindingFlags,
                    new Type[] { typeof(String), typeof(String) }
                    );
                ilg.Ldstr(GetCSharpString(mapping.TypeName));
                ilg.Ldstr(GetCSharpString(mapping.Namespace));
                ilg.New(XmlQualifiedName_ctor);
            }

            MethodInfo XmlSerializationWriter_method = typeof(XmlSerializationWriter).GetMethod(
                   method,
                   CodeGenerator.InstanceBindingFlags,
                   argTypes.ToArray()
                   );
            ilg.Call(XmlSerializationWriter_method);

            if (hasDefault)
            {
                ilg.EndIf();
            }
        }

 private void WriteElementCall(string func, Type cast, SourceInfo source, string name, string ns, bool isNullable, bool isAny)
 {
     MethodInfo XmlSerializationWriter_func = typeof(XmlSerializationWriter).GetMethod(
          func,
          CodeGenerator.InstanceBindingFlags,
          new Type[] { cast, typeof(String), typeof(String), typeof(Boolean), typeof(Boolean) }
          );
     ilg.Ldarg(0);
     source.Load(cast);
     ilg.Ldstr(GetCSharpString(name));
     ilg.Ldstr(GetCSharpString(ns));
     ilg.Ldc(isNullable);
     ilg.Ldc(isAny);
     ilg.Call(XmlSerializationWriter_func);
 }

        private void WriteElement(SourceInfo source, ElementAccessor element, string arrayName, bool writeAccessor)
        {
            string name = writeAccessor ? element.Name : element.Mapping.TypeName;
            string ns = element.Any && element.Name.Length == 0 ? null : (element.Form == XmlSchemaForm.Qualified ? (writeAccessor ? element.Namespace : element.Mapping.Namespace) : "");
            if (element.Mapping is NullableMapping)
            {
                if (source.Type == element.Mapping.TypeDesc.Type)
                {
                    MethodInfo Nullable_get_HasValue = element.Mapping.TypeDesc.Type.GetMethod(
                        "get_HasValue",
                        CodeGenerator.InstanceBindingFlags,
                        Array.Empty<Type>()
                        );
                    source.LoadAddress(element.Mapping.TypeDesc.Type);
                    ilg.Call(Nullable_get_HasValue);
                }
                else
                {
                    source.Load(null);
                    ilg.Load(null);
                    ilg.Cne();
                }
                ilg.If();
                string fullTypeName = element.Mapping.TypeDesc.BaseTypeDesc.CSharpName;
                SourceInfo castedSource = source.CastTo(element.Mapping.TypeDesc.BaseTypeDesc);
                ElementAccessor e = element.Clone();
                e.Mapping = ((NullableMapping)element.Mapping).BaseMapping;
                WriteElement(e.Any ? source : castedSource, e, arrayName, writeAccessor);
                if (element.IsNullable)
                {
                    ilg.Else();
                    WriteLiteralNullTag(element.Name, element.Form == XmlSchemaForm.Qualified ? element.Namespace : "");
                }
                ilg.EndIf();
            }
            else if (element.Mapping is ArrayMapping)
            {
                ArrayMapping mapping = (ArrayMapping)element.Mapping;
                if (element.IsUnbounded)
                {
                    throw Globals.NotSupported("Unreachable: IsUnbounded is never set true!");
                }
                else
                {
                    ilg.EnterScope();
                    string fullTypeName = mapping.TypeDesc.CSharpName;
                    WriteArrayLocalDecl(fullTypeName, arrayName, source, mapping.TypeDesc);
                    if (element.IsNullable)
                    {
                        WriteNullCheckBegin(arrayName, element);
                    }
                    else
                    {
                        if (mapping.TypeDesc.IsNullable)
                        {
                            ilg.Ldloc(ilg.GetLocal(arrayName));
                            ilg.Load(null);
                            ilg.If(Cmp.NotEqualTo);
                        }
                    }
                    WriteStartElement(name, ns, false);
                    WriteArrayItems(mapping.ElementsSortedByDerivation, null, null, mapping.TypeDesc, arrayName, null);
                    WriteEndElement();
                    if (element.IsNullable)
                    {
                        ilg.EndIf();
                    }
                    else
                    {
                        if (mapping.TypeDesc.IsNullable)
                        {
                            ilg.EndIf();
                        }
                    }
                    ilg.ExitScope();
                }
            }
            else if (element.Mapping is EnumMapping)
            {
                WritePrimitive("WriteElementString", name, ns, element.Default, source, element.Mapping, false, true, element.IsNullable);
            }
            else if (element.Mapping is PrimitiveMapping)
            {
                PrimitiveMapping mapping = (PrimitiveMapping)element.Mapping;
                if (mapping.TypeDesc == QnameTypeDesc)
                    WriteQualifiedNameElement(name, ns, element.Default, source, element.IsNullable, mapping);
                else
                {
                    string suffixRaw = mapping.TypeDesc.XmlEncodingNotRequired ? "Raw" : "";
                    WritePrimitive(element.IsNullable ? ("WriteNullableStringLiteral" + suffixRaw) : ("WriteElementString" + suffixRaw),
                                   name, ns, element.Default, source, mapping, false, true, element.IsNullable);
                }
            }
            else if (element.Mapping is StructMapping)
            {
                StructMapping mapping = (StructMapping)element.Mapping;

                string methodName = ReferenceMapping(mapping);

#if DEBUG
//.........这里部分代码省略.........

 private void WriteText(SourceInfo source, TextAccessor text)
 {
     if (text.Mapping is PrimitiveMapping)
     {
         PrimitiveMapping mapping = (PrimitiveMapping)text.Mapping;
         Type argType;
         ilg.Ldarg(0);
         if (text.Mapping is EnumMapping)
         {
             WriteEnumValue((EnumMapping)text.Mapping, source, out argType);
         }
         else
         {
             WritePrimitiveValue(mapping.TypeDesc, source, out argType);
         }
         MethodInfo XmlSerializationWriter_WriteValue = typeof(XmlSerializationWriter).GetMethod(
             "WriteValue",
             CodeGenerator.InstanceBindingFlags,
             new Type[] { argType }
             );
         ilg.Call(XmlSerializationWriter_WriteValue);
     }
     else if (text.Mapping is SpecialMapping)
     {
         SpecialMapping mapping = (SpecialMapping)text.Mapping;
         switch (mapping.TypeDesc.Kind)
         {
             case TypeKind.Node:
                 MethodInfo WriteTo = source.Type.GetMethod(
                     "WriteTo",
                     CodeGenerator.InstanceBindingFlags,
                     new Type[] { typeof(XmlWriter) }
                     );
                 MethodInfo XmlSerializationWriter_get_Writer = typeof(XmlSerializationWriter).GetMethod(
                     "get_Writer",
                     CodeGenerator.InstanceBindingFlags,
                     Array.Empty<Type>()
                     );
                 source.Load(source.Type);
                 ilg.Ldarg(0);
                 ilg.Call(XmlSerializationWriter_get_Writer);
                 ilg.Call(WriteTo);
                 break;
             default:
                 throw new InvalidOperationException(SR.XmlInternalError);
         }
     }
 }

        private void WriteElements(SourceInfo source, string enumSource, ElementAccessor[] elements, TextAccessor text, ChoiceIdentifierAccessor choice, string arrayName, bool writeAccessors, bool isNullable)
        {
            if (elements.Length == 0 && text == null) return;
            if (elements.Length == 1 && text == null)
            {
                TypeDesc td = elements[0].IsUnbounded ? elements[0].Mapping.TypeDesc.CreateArrayTypeDesc() : elements[0].Mapping.TypeDesc;
                if (!elements[0].Any && !elements[0].Mapping.TypeDesc.IsOptionalValue)
                    source = source.CastTo(td);
                WriteElement(source, elements[0], arrayName, writeAccessors);
            }
            else
            {
                bool doEndIf = false;
                if (isNullable && choice == null)
                {
                    source.Load(typeof(object));
                    ilg.Load(null);
                    ilg.If(Cmp.NotEqualTo);
                    doEndIf = true;
                }
                int anyCount = 0;
                ArrayList namedAnys = new ArrayList();
                ElementAccessor unnamedAny = null; // can only have one
                bool wroteFirstIf = false;
                string enumTypeName = choice == null ? null : choice.Mapping.TypeDesc.FullName;

                for (int i = 0; i < elements.Length; i++)
                {
                    ElementAccessor element = elements[i];

                    if (element.Any)
                    {
                        anyCount++;
                        if (element.Name != null && element.Name.Length > 0)
                            namedAnys.Add(element);
                        else if (unnamedAny == null)
                            unnamedAny = element;
                    }
                    else if (choice != null)
                    {
                        string fullTypeName = element.Mapping.TypeDesc.CSharpName;
                        object enumValue;
                        string enumFullName = enumTypeName + "[email protected]" + FindChoiceEnumValue(element, (EnumMapping)choice.Mapping, out enumValue);

                        if (wroteFirstIf) ilg.InitElseIf();
                        else { wroteFirstIf = true; ilg.InitIf(); }
                        ILGenLoad(enumSource, choice == null ? null : choice.Mapping.TypeDesc.Type);
                        ilg.Load(enumValue);
                        ilg.Ceq();
                        if (isNullable && !element.IsNullable)
                        {
                            Label labelFalse = ilg.DefineLabel();
                            Label labelEnd = ilg.DefineLabel();
                            ilg.Brfalse(labelFalse);
                            source.Load(typeof(object));
                            ilg.Load(null);
                            ilg.Cne();
                            ilg.Br_S(labelEnd);
                            ilg.MarkLabel(labelFalse);
                            ilg.Ldc(false);
                            ilg.MarkLabel(labelEnd);
                        }
                        ilg.AndIf();

                        WriteChoiceTypeCheck(source, fullTypeName, choice, enumFullName, element.Mapping.TypeDesc);

                        SourceInfo castedSource = source;
                        castedSource = source.CastTo(element.Mapping.TypeDesc);
                        WriteElement(element.Any ? source : castedSource, element, arrayName, writeAccessors);
                    }
                    else
                    {
                        TypeDesc td = element.IsUnbounded ? element.Mapping.TypeDesc.CreateArrayTypeDesc() : element.Mapping.TypeDesc;
                        string fullTypeName = td.CSharpName;
                        if (wroteFirstIf) ilg.InitElseIf();
                        else { wroteFirstIf = true; ilg.InitIf(); }
                        WriteInstanceOf(source, td.Type);
                        // WriteInstanceOf leave bool on the stack
                        ilg.AndIf();
                        SourceInfo castedSource = source;
                        castedSource = source.CastTo(td);
                        WriteElement(element.Any ? source : castedSource, element, arrayName, writeAccessors);
                    }
                }
                if (wroteFirstIf)
                {
                    if (anyCount > 0)
                    {
                        // See "else " below
                        if (elements.Length - anyCount > 0)
                        { // NOOP
                        }
                        else ilg.EndIf();
                    }
                }
                if (anyCount > 0)
                {
                    if (elements.Length - anyCount > 0) ilg.InitElseIf();
                    else ilg.InitIf();

//.........这里部分代码省略.........

 private void WritePrimitiveValue(TypeDesc typeDesc, SourceInfo source, out Type returnType)
 {
     if (typeDesc == StringTypeDesc || typeDesc.FormatterName == "String")
     {
         source.Load(typeDesc.Type);
         returnType = typeDesc.Type;
     }
     else
     {
         if (!typeDesc.HasCustomFormatter)
         {
             Type argType = typeDesc.Type;
             // No ToString(Byte), compiler used ToString(Int16) instead.
             if (argType == typeof(Byte))
                 argType = typeof(Int16);
             // No ToString(UInt16), compiler used ToString(Int32) instead.
             else if (argType == typeof(UInt16))
                 argType = typeof(Int32);
             MethodInfo XmlConvert_ToString = typeof(XmlConvert).GetMethod(
                 "ToString",
                 CodeGenerator.StaticBindingFlags,
                 new Type[] { argType }
                 );
             source.Load(typeDesc.Type);
             ilg.Call(XmlConvert_ToString);
             returnType = XmlConvert_ToString.ReturnType;
         }
         else
         {
             // Only these methods below that is non Static and need to ldarg("this") for Call.
             BindingFlags bindingFlags = CodeGenerator.StaticBindingFlags;
             if (typeDesc.FormatterName == "XmlQualifiedName")
             {
                 bindingFlags = CodeGenerator.InstanceBindingFlags;
                 ilg.Ldarg(0);
             }
             MethodInfo FromXXX = typeof(XmlSerializationWriter).GetMethod(
                    "From" + typeDesc.FormatterName,
                    bindingFlags,
                    new Type[] { typeDesc.Type }
                    );
             source.Load(typeDesc.Type);
             ilg.Call(FromXXX);
             returnType = FromXXX.ReturnType;
         }
     }
 }

        private void WriteEnumValue(EnumMapping mapping, SourceInfo source, out Type returnType)
        {
            string methodName = ReferenceMapping(mapping);

#if DEBUG
            // use exception in the place of Debug.Assert to avoid throwing asserts from a server process such as aspnet_ewp.exe
            if (methodName == null) throw new InvalidOperationException(SR.Format(SR.XmlInternalErrorMethod, mapping.TypeDesc.Name));
#endif

            // For enum, its write method (eg. Write1_Gender) could be called multiple times
            // prior to its declaration.
            MethodBuilder methodBuilder = EnsureMethodBuilder(typeBuilder,
                    methodName,
                    CodeGenerator.PrivateMethodAttributes,
                    typeof(string),
                    new Type[] { mapping.TypeDesc.Type });
            ilg.Ldarg(0);
            source.Load(mapping.TypeDesc.Type);
            ilg.Call(methodBuilder);
            returnType = typeof(string);
        }