mcs/class/System.ServiceModel/Mono.CodeGeneration/CodeFieldReference.cs

   1 //
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   3 // a copy of this software and associated documentation files (the
   4 // "Software"), to deal in the Software without restriction, including
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   7 // permit persons to whom the Software is furnished to do so, subject to
   8 // the following conditions:
   9 //
  10 // The above copyright notice and this permission notice shall be
  11 // included in all copies or substantial portions of the Software.
  12 //
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  14 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  15 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  16 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  17 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  18 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  19 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20 //
  21 // Copyright (C) Lluis Sanchez Gual, 2004
  22 //
  23
  24 #if !FULL_AOT_RUNTIME
  25 using System;
  26 using System.Reflection;
  27 using System.Reflection.Emit;
  28
  29 namespace Mono.CodeGeneration
  30 {
  31         public class CodeFieldReference: CodeValueReference
  32         {
  33                 CodeExpression target;
  34                 FieldInfo field;
  35
  36                 public CodeFieldReference (CodeExpression target, FieldInfo field)
  37                 {
  38                         if (field.IsStatic)
  39                                 throw new InvalidOperationException ("Static member '" + field.Name + "' cannot be accessed with an instance reference.");
  40                         this.target = target;
  41                         this.field = field;
  42                 }
  43
  44                 public CodeFieldReference (FieldInfo field)
  45                 {
  46                         if (!field.IsStatic)
  47                                 throw new InvalidOperationException ("An object reference is required for the non-static field '" + field.Name + "'.");
  48
  49                         this.field = field;
  50                 }
  51
  52                 public override void Generate (ILGenerator gen)
  53                 {
  54                         if (field.IsStatic) {
  55                                 gen.Emit (OpCodes.Ldsfld, field);
  56                         }
  57                         else {
  58                                 target.Generate (gen);
  59                                 gen.Emit (OpCodes.Ldfld, field);
  60                         }
  61                 }
  62
  63                 public override void GenerateSet (ILGenerator gen, CodeExpression value)
  64                 {
  65                         if (field.IsStatic) {
  66                                 value.Generate (gen);
  67                                 CodeGenerationHelper.GenerateSafeConversion (gen, field.FieldType, value.GetResultType ());
  68                                 gen.Emit (OpCodes.Stsfld, field);
  69                         }
  70                         else {
  71                                 target.Generate (gen);
  72                                 value.Generate (gen);
  73                                 CodeGenerationHelper.GenerateSafeConversion (gen, field.FieldType, value.GetResultType ());
  74                                 gen.Emit (OpCodes.Stfld, field);
  75                         }
  76                 }
  77
  78                 public override void PrintCode (CodeWriter cp)
  79                 {
  80                         if (!field.IsStatic)
  81                                 target.PrintCode (cp);
  82                         else
  83                                 cp.Write (field.DeclaringType.Name);
  84                         cp.Write (".");
  85                         cp.Write (field.Name);
  86                 }
  87
  88                 public override Type GetResultType ()
  89                 {
  90                         return field.FieldType;
  91                 }
  92         }
  93 }
  94 #endif