mcs/class/corlib/System.Reflection.Emit/OpCode.cs

   1 //
   2 // System.Reflection.Emit.OpCode
   3 //
   4 // Author:
   5 //   Sergey Chaban (serge@wildwestsoftware.com)
   6 //
   7
   8 using System;
   9 using System.Reflection;
  10 using System.Reflection.Emit;
  11
  12
  13 namespace System.Reflection.Emit {
  14
  15         public struct OpCode {
  16
  17                 internal string name;
  18                 internal int size;
  19                 internal OpCodeType type;
  20                 internal OperandType operandType;
  21                 internal StackBehaviour pop;
  22                 internal StackBehaviour push;
  23                 internal FlowControl flowCtrl;
  24                 internal byte op1;
  25                 internal byte op2;
  26
  27                 internal OpCode (string name, int size,
  28                                  OpCodeType opcodeType,
  29                                  OperandType operandType,
  30                                  StackBehaviour pop,
  31                                  StackBehaviour push,
  32                                  FlowControl flowCtrl,
  33                                  byte op1, byte op2)
  34                 {
  35                         this.name = name;
  36                         this.size = size;
  37                         this.type = opcodeType;
  38                         this.operandType = operandType;
  39                         this.pop = pop;
  40                         this.push = push;
  41                         this.flowCtrl = flowCtrl;
  42                         this.op1 = op1;
  43                         this.op2 = op2;
  44                 }
  45
  46
  47
  48                 /// <summary>
  49                 /// </summary>
  50                 public string Name {
  51                         get {
  52                                 return name;
  53                         }
  54                 }
  55
  56                 /// <summary>
  57                 /// </summary>
  58                 public int Size {
  59                         get {
  60                                 return size;
  61                         }
  62                 }
  63
  64
  65                 /// <summary>
  66                 /// </summary>
  67                 public OpCodeType OpCodeType {
  68                         get {
  69                                 return type;
  70                         }
  71                 }
  72
  73                 /// <summary>
  74                 /// </summary>
  75                 public OperandType OperandType {
  76                         get {
  77                                 return operandType;
  78                         }
  79                 }
  80
  81                 /// <summary>
  82                 /// </summary>
  83                 public FlowControl FlowControl {
  84                         get {
  85                                 return flowCtrl;
  86                         }
  87                 }
  88
  89
  90                 /// <summary>
  91                 /// </summary>
  92                 public StackBehaviour StackBehaviourPop {
  93                         get {
  94                                 return pop;
  95                         }
  96                 }
  97
  98
  99                 /// <summary>
 100                 /// </summary>
 101                 public StackBehaviour StackBehaviourPush {
 102                         get {
 103                                 return push;
 104                         }
 105                 }
 106
 107
 108                 /// <summary>
 109                 /// </summary>
 110                 public short Value {
 111                         get {
 112                                 if (size == 1) {
 113                                         return op2;
 114                                 } else {
 115                                         // two byte instruction - combine
 116                                         // give the same values as the mscorlib impl
 117                                         // this makes the Value property useless
 118                                         return (short) ((op1 << 2) | op2);
 119                                 }
 120                         }
 121                 }
 122
 123                 public override string ToString()
 124                 {
 125                         return Name;
 126                 }
 127         } // OpCode
 128
 129 } // System.Reflection.Emit