101 lines
3.1 KiB
C#
101 lines
3.1 KiB
C#
//
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// VisitorForVariablesIn.cs
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//
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// Authors:
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// Alexander Chebaturkin (chebaturkin@gmail.com)
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//
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// Copyright (C) 2011 Alexander Chebaturkin
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using Mono.CodeContracts.Static.AST;
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using Mono.CodeContracts.Static.AST.Visitors;
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using Mono.CodeContracts.Static.DataStructures;
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namespace Mono.CodeContracts.Static.Analysis.ExpressionAnalysis.Decoding {
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class VisitorForVariablesIn<V, E> : ISymbolicExpressionVisitor<E, E, V, ISet<E>, Dummy>
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where V : IEquatable<V>
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where E : IEquatable<E> {
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private readonly IExpressionContextProvider<E, V> contextProvider;
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public VisitorForVariablesIn (IExpressionContextProvider<E, V> contextProvider)
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{
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this.contextProvider = contextProvider;
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}
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public static void AddFreeVariables (E expr, ISet<E> set, FullExpressionDecoder<V, E> decoder)
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{
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decoder.VariablesInVisitor.Recurse (expr, set);
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}
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private void Recurse (E expr, ISet<E> set)
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{
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this.contextProvider.ExpressionContext.Decode<ISet<E>, Dummy, VisitorForVariablesIn<V, E>> (expr, this, set);
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}
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#region Implementation of IExpressionILVisitor<E,E,V,ISet<E>,Dummy>
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public Dummy Binary (E pc, BinaryOperator op, V dest, E operand1, E operand2, ISet<E> data)
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{
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Recurse (operand1, data);
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Recurse (operand2, data);
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return Dummy.Value;
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}
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public Dummy Isinst (E pc, TypeNode type, V dest, E obj, ISet<E> data)
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{
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data.Add (pc);
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return Dummy.Value;
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}
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public Dummy LoadNull (E pc, V dest, ISet<E> polarity)
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{
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return Dummy.Value;
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}
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public Dummy LoadConst (E pc, TypeNode type, object constant, V dest, ISet<E> data)
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{
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return Dummy.Value;
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}
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public Dummy Sizeof (E pc, TypeNode type, V dest, ISet<E> data)
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{
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data.Add (pc);
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return Dummy.Value;
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}
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public Dummy Unary (E pc, UnaryOperator op, bool unsigned, V dest, E source, ISet<E> data)
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{
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Recurse (source, data);
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return Dummy.Value;
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}
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#endregion
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#region Implementation of ISymbolicExpressionVisitor<E,E,V,ISet<E>,Dummy>
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public Dummy SymbolicConstant (E pc, V variable, ISet<E> data)
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{
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return Dummy.Value;
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}
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#endregion
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}
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}
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