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//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (C) Lluis Sanchez Gual, 2004
//
#if !FULL_AOT_RUNTIME
using System;
using System.Reflection;
using System.Reflection.Emit;
namespace Mono.CodeGeneration
{
public class CodeArgumentReference: CodeValueReference
{
Type type;
int argNum;
string name;
public CodeArgumentReference (Type type, int argNum, string name)
{
this.type = type;
this.argNum = argNum;
this.name = name;
}
public override void Generate (ILGenerator gen)
{
switch (argNum) {
case 0: gen.Emit (OpCodes.Ldarg_0); break;
case 1: gen.Emit (OpCodes.Ldarg_1); break;
case 2: gen.Emit (OpCodes.Ldarg_2); break;
case 3: gen.Emit (OpCodes.Ldarg_3); break;
default: gen.Emit (OpCodes.Ldarg, argNum); break;
}
if (type.IsByRef)
CodeGenerationHelper.LoadFromPtr (gen, type.GetElementType ());
}
public override void GenerateSet (ILGenerator gen, CodeExpression value)
{
if (type.IsByRef) {
gen.Emit (OpCodes.Ldarg, argNum);
value.Generate (gen);
CodeGenerationHelper.GenerateSafeConversion (gen, type.GetElementType (), value.GetResultType ());
CodeGenerationHelper.SaveToPtr (gen, type.GetElementType ());
}
else {
value.Generate (gen);
CodeGenerationHelper.GenerateSafeConversion (gen, type, value.GetResultType ());
gen.Emit (OpCodes.Starg, argNum);
}
}
public override void PrintCode (CodeWriter cp)
{
cp.Write (name);
}
public override Type GetResultType ()
{
return type.IsByRef ? type.GetElementType () : type;
}
}
}
#endif
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