99 lines
2.6 KiB
C#
99 lines
2.6 KiB
C#
//
|
|
// 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;
|
|
using Mono.CodeGeneration;
|
|
|
|
namespace Mono.CodeGeneration
|
|
{
|
|
public class CodeIs: CodeConditionExpression
|
|
{
|
|
Type type;
|
|
CodeExpression exp;
|
|
|
|
public CodeIs (Type type, CodeExpression exp)
|
|
{
|
|
this.type = type;
|
|
this.exp = exp;
|
|
}
|
|
|
|
public override void Generate (ILGenerator gen)
|
|
{
|
|
Type typeObj = exp.GetResultType ();
|
|
|
|
if (type.IsAssignableFrom (typeObj)) {
|
|
gen.Emit (OpCodes.Ldc_I4_1);
|
|
return;
|
|
}
|
|
else if (!typeObj.IsAssignableFrom (type)) {
|
|
gen.Emit (OpCodes.Ldc_I4_0);
|
|
return;
|
|
}
|
|
|
|
exp.Generate (gen);
|
|
gen.Emit (OpCodes.Isinst, type);
|
|
gen.Emit (OpCodes.Ldnull);
|
|
gen.Emit (OpCodes.Cgt_Un);
|
|
}
|
|
|
|
public override void GenerateForBranch (ILGenerator gen, Label label, bool branchCase)
|
|
{
|
|
Type typeObj = exp.GetResultType ();
|
|
|
|
if (type.IsAssignableFrom (typeObj)) {
|
|
if (branchCase)
|
|
gen.Emit (OpCodes.Br, label);
|
|
return;
|
|
}
|
|
else if (!typeObj.IsAssignableFrom (type)) {
|
|
if (!branchCase)
|
|
gen.Emit (OpCodes.Br, label);
|
|
return;
|
|
}
|
|
|
|
exp.Generate (gen);
|
|
gen.Emit (OpCodes.Isinst, type);
|
|
if (branchCase)
|
|
gen.Emit (OpCodes.Brtrue, label);
|
|
else
|
|
gen.Emit (OpCodes.Brfalse, label);
|
|
}
|
|
|
|
public override void PrintCode (CodeWriter cp)
|
|
{
|
|
exp.PrintCode (cp);
|
|
cp.Write (" is ");
|
|
cp.Write (type.FullName);
|
|
}
|
|
|
|
public override Type GetResultType ()
|
|
{
|
|
return typeof(bool);
|
|
}
|
|
}
|
|
}
|
|
#endif
|