1 // 2 // VisitorForUnderlyingVariable.cs 3 // 4 // Authors: 5 // Alexander Chebaturkin (chebaturkin@gmail.com) 6 // 7 // Copyright (C) 2011 Alexander Chebaturkin 8 // 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: 16 // 17 // The above copyright notice and this permission notice shall be 18 // included in all copies or substantial portions of the Software. 19 // 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. 27 // 28 29 using System; 30 using Mono.CodeContracts.Static.AST; 31 using Mono.CodeContracts.Static.DataStructures; 32 33 namespace Mono.CodeContracts.Static.Analysis.ExpressionAnalysis.Decoding { 34 class VisitorForUnderlyingVariable<V,E> : QueryVisitor<V, E> 35 where V : IEquatable<V> 36 where E : IEquatable<E> { 37 private V Variable; 38 IsUnderlyingVariable(E expr, FullExpressionDecoder<V, E> decoder)39 public static V IsUnderlyingVariable (E expr, FullExpressionDecoder<V, E> decoder) 40 { 41 VisitorForUnderlyingVariable<V, E> visitor = decoder.UnderlyingVariableVisitor; 42 Decode (expr, visitor, decoder); 43 return visitor.Variable; 44 } 45 Binary(E pc, BinaryOperator op, V dest, E operand1, E operand2, Dummy data)46 public override bool Binary (E pc, BinaryOperator op, V dest, E operand1, E operand2, Dummy data) 47 { 48 this.Variable = dest; 49 return true; 50 } 51 Isinst(E pc, TypeNode type, V dest, E obj, Dummy data)52 public override bool Isinst (E pc, TypeNode type, V dest, E obj, Dummy data) 53 { 54 this.Variable = dest; 55 return true; 56 } 57 LoadConst(E pc, TypeNode type, object constant, V dest, Dummy data)58 public override bool LoadConst (E pc, TypeNode type, object constant, V dest, Dummy data) 59 { 60 this.Variable = dest; 61 return true; 62 } 63 LoadNull(E pc, V dest, Dummy polarity)64 public override bool LoadNull (E pc, V dest, Dummy polarity) 65 { 66 this.Variable = dest; 67 return true; 68 } 69 Sizeof(E pc, TypeNode type, V dest, Dummy data)70 public override bool Sizeof (E pc, TypeNode type, V dest, Dummy data) 71 { 72 this.Variable = dest; 73 return true; 74 } 75 SymbolicConstant(E pc, V variable, Dummy data)76 public override bool SymbolicConstant (E pc, V variable, Dummy data) 77 { 78 this.Variable = variable; 79 return true; 80 } 81 Unary(E pc, UnaryOperator op, bool unsigned, V dest, E source, Dummy data)82 public override bool Unary (E pc, UnaryOperator op, bool unsigned, V dest, E source, Dummy data) 83 { 84 this.Variable = dest; 85 return true; 86 } 87 } 88 }