5 // Jb Evain (jbevain@novell.com)
6 // Miguel de Icaza (miguel@novell.com)
8 // (C) 2008 Novell, Inc. (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Collections.ObjectModel;
32 using System.Collections.Generic;
33 using System.Reflection;
34 using System.Reflection.Emit;
36 namespace System.Linq.Expressions {
38 public class LambdaExpression : Expression {
41 ReadOnlyCollection<ParameterExpression> parameters;
43 public Expression Body {
47 public ReadOnlyCollection<ParameterExpression> Parameters {
48 get { return parameters; }
51 internal LambdaExpression (Type delegateType, Expression body, ReadOnlyCollection<ParameterExpression> parameters)
52 : base (ExpressionType.Lambda, delegateType)
55 this.parameters = parameters;
58 void EmitPopIfNeeded (EmitContext ec)
60 if (GetReturnType () == typeof (void) && body.Type != typeof (void))
61 ec.ig.Emit (OpCodes.Pop);
64 internal override void Emit (EmitContext ec)
66 ec.EmitCreateDelegate (this);
69 internal void EmitBody (EmitContext ec)
73 ec.ig.Emit (OpCodes.Ret);
76 internal Type GetReturnType ()
78 return this.Type.GetInvokeMethod ().ReturnType;
81 public Delegate Compile ()
83 #if TARGET_JVM || MONOTOUCH
84 return new System.Linq.jvm.Runner (this).CreateDelegate ();
86 var context = new CompilationContext ();
87 context.AddCompilationUnit (this);
88 return context.CreateDelegate ();
92 #if TARGET_JVM || MONOTOUCH
93 internal Delegate Compile (System.Linq.jvm.ExpressionInterpreter interpreter)
95 return new System.Linq.jvm.Runner (this, interpreter).CreateDelegate ();