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;
35 using System.Reflection.Emit;
39 namespace System.Linq.Expressions {
41 public class LambdaExpression : Expression {
44 ReadOnlyCollection<ParameterExpression> parameters;
46 public Expression Body {
50 public ReadOnlyCollection<ParameterExpression> Parameters {
51 get { return parameters; }
54 internal LambdaExpression (Type delegateType, Expression body, ReadOnlyCollection<ParameterExpression> parameters)
55 : base (ExpressionType.Lambda, delegateType)
58 this.parameters = parameters;
62 void EmitPopIfNeeded (EmitContext ec)
64 if (GetReturnType () == typeof (void) && body.Type != typeof (void))
65 ec.ig.Emit (OpCodes.Pop);
68 internal override void Emit (EmitContext ec)
70 ec.EmitCreateDelegate (this);
73 internal void EmitBody (EmitContext ec)
77 ec.ig.Emit (OpCodes.Ret);
81 internal Type GetReturnType ()
83 return this.Type.GetInvokeMethod ().ReturnType;
86 public Delegate Compile ()
89 return new System.Linq.jvm.Runner (this).CreateDelegate ();
91 var context = new CompilationContext ();
92 context.AddCompilationUnit (this);
93 return context.CreateDelegate ();
98 internal Delegate Compile (System.Linq.jvm.ExpressionInterpreter interpreter)
100 return new System.Linq.jvm.Runner (this, interpreter).CreateDelegate ();