5 // Alexander Chebaturkin (chebaturkin@gmail.com)
7 // Copyright (C) 2011 Alexander Chebaturkin
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 using System.Collections.Generic;
31 using Mono.CodeContracts.Static.AST;
32 using Mono.CodeContracts.Static.ControlFlow;
33 using Mono.CodeContracts.Static.DataStructures;
35 namespace Mono.CodeContracts.Static.Analysis.ExpressionAnalysis.Expressions {
36 class ConstExpr<TSymbolicValue> : Expr<TSymbolicValue> where TSymbolicValue : IEquatable<TSymbolicValue> {
37 public readonly TypeNode Type;
38 public readonly object value;
40 public ConstExpr (TypeNode type, object value)
46 #region Overrides of Expression
47 public override IEnumerable<TSymbolicValue> Variables
52 public override Result Decode<Data, Result, Visitor> (APC pc, TSymbolicValue dest, Visitor visitor, Data data)
54 return visitor.LoadConst (pc, this.Type, this.value, dest, data);
57 public override Expr<TSymbolicValue> Substitute (IImmutableMap<TSymbolicValue, Sequence<TSymbolicValue>> substitutions)
62 public override bool IsContained (IImmutableSet<TSymbolicValue> candidates)
67 public override bool Contains (TSymbolicValue symbol)
72 public override string ToString ()
74 return String.Format ("Const({0} {1})", this.Type, this.value);
77 public override bool Equals (Expr<TSymbolicValue> other)
79 var constant = other as ConstExpr<TSymbolicValue>;
81 return constant != null && constant.Type.Equals (this.Type) && constant.value.Equals (this.value);