Jo Shields a575963da9 Imported Upstream version 3.6.0
Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14
2014-08-13 10:39:27 +01:00

146 lines
3.9 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;
namespace Mono.CodeGeneration
{
public abstract class CodeArithmeticOperation: CodeExpression
{
protected CodeExpression exp1;
protected CodeExpression exp2;
protected Type t1;
protected Type t2;
protected string symbol;
protected CodeArithmeticOperation ()
{
}
public CodeArithmeticOperation (CodeExpression exp1, CodeExpression exp2, string symbol)
{
this.symbol = symbol;
this.exp1 = exp1;
this.exp2 = exp2;
t1 = exp1.GetResultType ();
t2 = exp2.GetResultType ();
if (!t1.IsPrimitive || !t2.IsPrimitive || (t1 != t2)) {
throw new InvalidOperationException ("Operator " + GetType().Name + " cannot be applied to operands of type '" + t1.Name + " and " + t2.Name);
}
}
public override void PrintCode (CodeWriter cp)
{
exp1.PrintCode (cp);
cp.Write (" " + symbol + " ");
exp2.PrintCode (cp);
}
public override Type GetResultType ()
{
return exp1.GetResultType();
}
}
public class CodeAdd: CodeArithmeticOperation
{
public CodeAdd (CodeExpression exp1, CodeExpression exp2)
{
this.symbol = "+";
this.exp1 = exp1;
this.exp2 = exp2;
t1 = exp1.GetResultType ();
t2 = exp2.GetResultType ();
if ((!t1.IsPrimitive || !t2.IsPrimitive || (t1 != t2)) && (t1 != typeof(string) || t2 != typeof(string))) {
throw new InvalidOperationException ("Operator " + GetType().Name + " cannot be applied to operands of type '" + t1.Name + " and " + t2.Name);
}
}
public override void Generate (ILGenerator gen)
{
if (exp1.GetResultType () == typeof(string)) {
MethodInfo m = typeof(string).GetMethod ("Concat", new Type[] { typeof(string), typeof(string) });
CodeGenerationHelper.GenerateMethodCall (gen, null, m, exp1, exp2);
}
else {
exp1.Generate (gen);
exp2.Generate (gen);
gen.Emit (OpCodes.Add);
}
}
}
public class CodeMul: CodeArithmeticOperation
{
public CodeMul (CodeExpression exp1, CodeExpression exp2)
: base (exp1, exp2, "*")
{
}
public override void Generate (ILGenerator gen)
{
exp1.Generate (gen);
exp2.Generate (gen);
gen.Emit (OpCodes.Mul);
}
}
public class CodeDiv: CodeArithmeticOperation
{
public CodeDiv (CodeExpression exp1, CodeExpression exp2)
: base (exp1, exp2, "*")
{
}
public override void Generate (ILGenerator gen)
{
exp1.Generate (gen);
exp2.Generate (gen);
gen.Emit (OpCodes.Div);
}
}
public class CodeSub: CodeArithmeticOperation
{
public CodeSub (CodeExpression exp1, CodeExpression exp2)
: base (exp1, exp2, "-")
{
}
public override void Generate (ILGenerator gen)
{
exp1.Generate (gen);
exp2.Generate (gen);
gen.Emit (OpCodes.Sub);
}
}
}
#endif