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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 CodeNotEquals: CodeConditionExpression
{
CodeExpression exp1;
CodeExpression exp2;
Type t1;
Type t2;
public CodeNotEquals (CodeExpression exp1, CodeExpression exp2)
{
this.exp1 = exp1;
this.exp2 = exp2;
t1 = exp1.GetResultType ();
t2 = exp2.GetResultType ();
if (t1.IsValueType && t2.IsValueType) {
if (t1 != t2)
throw new InvalidOperationException ("Can't compare values of different primitive types");
}
}
public override void Generate (ILGenerator gen)
{
if (t1.IsPrimitive)
{
exp1.Generate (gen);
exp2.Generate (gen);
gen.Emit (OpCodes.Ceq);
gen.Emit (OpCodes.Ldc_I4_0);
gen.Emit (OpCodes.Ceq);
}
else
{
exp1.Generate (gen);
exp2.Generate (gen);
gen.Emit (OpCodes.Ceq);
// gen.EmitCall (OpCodes.Callvirt, t1.GetMethod ("Equals", new Type[] {t2}), null);
gen.Emit (OpCodes.Ldc_I4_0);
gen.Emit (OpCodes.Ceq);
}
}
public override void GenerateForBranch (ILGenerator gen, Label label, bool branchCase)
{
if (t1.IsPrimitive)
{
exp1.Generate (gen);
exp2.Generate (gen);
if (branchCase)
gen.Emit (OpCodes.Bne_Un, label);
else
gen.Emit (OpCodes.Beq, label);
}
else {
exp1.Generate (gen);
exp2.Generate (gen);
// gen.EmitCall (OpCodes.Callvirt, t1.GetMethod ("Equals", new Type[] {t2}), null);
gen.Emit (OpCodes.Ceq);
gen.Emit (OpCodes.Ldc_I4_0);
if (branchCase)
gen.Emit (OpCodes.Beq, label);
else
gen.Emit (OpCodes.Bne_Un, label);
}
}
public override void PrintCode (CodeWriter cp)
{
if (t1.IsPrimitive) {
exp1.PrintCode (cp);
cp.Write (" != ");
exp2.PrintCode (cp);
}
else {
cp.Write ("!(");
exp1.PrintCode (cp);
cp.Write (".Equals (");
exp2.PrintCode (cp);
cp.Write ("))");
}
}
public override Type GetResultType ()
{
return typeof (bool);
}
}
}
#endif
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