92 lines
3.1 KiB
C#
92 lines
3.1 KiB
C#
//
|
|
// UnaryExpr.cs
|
|
//
|
|
// Authors:
|
|
// Alexander Chebaturkin (chebaturkin@gmail.com)
|
|
//
|
|
// Copyright (C) 2011 Alexander Chebaturkin
|
|
//
|
|
// 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.
|
|
//
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using Mono.CodeContracts.Static.AST;
|
|
using Mono.CodeContracts.Static.ControlFlow;
|
|
using Mono.CodeContracts.Static.DataStructures;
|
|
|
|
namespace Mono.CodeContracts.Static.Analysis.ExpressionAnalysis.Expressions {
|
|
class UnaryExpr<TSymbolicValue> : Expr<TSymbolicValue> where TSymbolicValue : IEquatable<TSymbolicValue> {
|
|
public readonly UnaryOperator Operator;
|
|
public readonly TSymbolicValue Source;
|
|
public readonly bool Unsigned;
|
|
|
|
public UnaryExpr (TSymbolicValue source, UnaryOperator op, bool unsigned)
|
|
{
|
|
this.Source = source;
|
|
this.Operator = op;
|
|
this.Unsigned = unsigned;
|
|
}
|
|
|
|
#region Overrides of Expression
|
|
public override IEnumerable<TSymbolicValue> Variables
|
|
{
|
|
get { yield return this.Source; }
|
|
}
|
|
|
|
public override Result Decode<Data, Result, Visitor> (APC pc, TSymbolicValue dest, Visitor visitor, Data data)
|
|
{
|
|
return visitor.Unary (pc, this.Operator, this.Unsigned, dest, this.Source, data);
|
|
}
|
|
|
|
public override Expr<TSymbolicValue> Substitute (IImmutableMap<TSymbolicValue, Sequence<TSymbolicValue>> substitutions)
|
|
{
|
|
if (substitutions.ContainsKey (this.Source))
|
|
return new UnaryExpr<TSymbolicValue> (substitutions [this.Source].Head, this.Operator, this.Unsigned);
|
|
|
|
return null;
|
|
}
|
|
|
|
public override bool IsContained (IImmutableSet<TSymbolicValue> candidates)
|
|
{
|
|
return candidates.Contains (this.Source);
|
|
}
|
|
|
|
public override bool Contains (TSymbolicValue symbol)
|
|
{
|
|
return symbol.Equals (this.Source);
|
|
}
|
|
|
|
public override string ToString ()
|
|
{
|
|
return String.Format ("Unary({0} {1})", this.Operator, this.Source);
|
|
}
|
|
|
|
public override bool Equals (Expr<TSymbolicValue> other)
|
|
{
|
|
var unary = other as UnaryExpr<TSymbolicValue>;
|
|
if (unary == null || unary.Operator != this.Operator || unary.Unsigned != this.Unsigned)
|
|
return false;
|
|
|
|
return unary.Source.Equals (this.Source);
|
|
}
|
|
#endregion
|
|
}
|
|
} |