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Viewing changes to external/ikvm/reflect/Emit/ParameterBuilder.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/ikvm/reflect/Emit/ParameterBuilder.cs
 
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/*
 
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  Copyright (C) 2008 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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using IKVM.Reflection.Writer;
 
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using IKVM.Reflection.Metadata;
 
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namespace IKVM.Reflection.Emit
 
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{
 
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        public sealed class ParameterBuilder
 
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        {
 
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                private readonly ModuleBuilder moduleBuilder;
 
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                private short flags;
 
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                private readonly short sequence;
 
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                private readonly int nameIndex;
 
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                private readonly string name;
 
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                private int lazyPseudoToken;
 
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                internal ParameterBuilder(ModuleBuilder moduleBuilder, int sequence, ParameterAttributes attribs, string name)
 
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                {
 
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                        this.moduleBuilder = moduleBuilder;
 
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                        this.flags = (short)attribs;
 
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                        this.sequence = (short)sequence;
 
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                        this.nameIndex = name == null ? 0 : moduleBuilder.Strings.Add(name);
 
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                        this.name = name;
 
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                }
 
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                internal int PseudoToken
 
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                {
 
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                        get
 
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                        {
 
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                                if (lazyPseudoToken == 0)
 
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                                {
 
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                                        // we lazily create the token, because if we don't need it we don't want the token fixup cost
 
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                                        lazyPseudoToken = moduleBuilder.AllocPseudoToken();
 
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                                }
 
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                                return lazyPseudoToken;
 
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                        }
 
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                }
 
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                public string Name
 
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                {
 
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                        get { return name; }
 
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                }
 
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                public int Position
 
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                {
 
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                        // note that this differs from ParameterInfo.Position, which is zero based
 
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                        get { return sequence; }
 
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                }
 
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                public int Attributes
 
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                {
 
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                        get { return flags; }
 
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                }
 
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                public bool IsIn
 
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                {
 
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                        get { return (flags & (short)ParameterAttributes.In) != 0; }
 
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                }
 
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                public bool IsOut
 
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                {
 
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                        get { return (flags & (short)ParameterAttributes.Out) != 0; }
 
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                }
 
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                public bool IsOptional
 
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                {
 
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                        get { return (flags & (short)ParameterAttributes.Optional) != 0; }
 
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                }
 
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                public void SetCustomAttribute(ConstructorInfo con, byte[] binaryAttribute)
 
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                {
 
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                        SetCustomAttribute(new CustomAttributeBuilder(con, binaryAttribute));
 
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                }
 
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                public void SetCustomAttribute(CustomAttributeBuilder customAttributeBuilder)
 
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                {
 
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                        Universe u = moduleBuilder.universe;
 
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                        if (customAttributeBuilder.Constructor.DeclaringType == u.System_Runtime_InteropServices_InAttribute)
 
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                        {
 
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                                flags |= (short)ParameterAttributes.In;
 
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                        }
 
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                        else if (customAttributeBuilder.Constructor.DeclaringType == u.System_Runtime_InteropServices_OutAttribute)
 
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                        {
 
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                                flags |= (short)ParameterAttributes.Out;
 
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                        }
 
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                        else if (customAttributeBuilder.Constructor.DeclaringType == u.System_Runtime_InteropServices_OptionalAttribute)
 
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                        {
 
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                                flags |= (short)ParameterAttributes.Optional;
 
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                        }
 
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                        else if (customAttributeBuilder.Constructor.DeclaringType == u.System_Runtime_InteropServices_MarshalAsAttribute)
 
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                        {
 
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                                FieldMarshal.SetMarshalAsAttribute(moduleBuilder, PseudoToken, customAttributeBuilder);
 
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                                flags |= (short)ParameterAttributes.HasFieldMarshal;
 
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                        }
 
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                        else
 
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                        {
 
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                                moduleBuilder.SetCustomAttribute(PseudoToken, customAttributeBuilder);
 
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                        }
 
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                }
 
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                public void SetConstant(object defaultValue)
 
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                {
 
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                        flags |= (short)ParameterAttributes.HasDefault;
 
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                        moduleBuilder.AddConstant(PseudoToken, defaultValue);
 
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                }
 
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                internal void WriteParamRecord(MetadataWriter mw)
 
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                {
 
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                        mw.Write(flags);
 
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                        mw.Write(sequence);
 
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                        mw.WriteStringIndex(nameIndex);
 
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                }
 
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                internal void FixupToken(int parameterToken)
 
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                {
 
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                        if (lazyPseudoToken != 0)
 
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                        {
 
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                                moduleBuilder.RegisterTokenFixup(lazyPseudoToken, parameterToken);
 
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                        }
 
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                }
 
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        }
 
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}