102 lines
3.7 KiB
C#
102 lines
3.7 KiB
C#
//
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// CSharpUnaryOperationBinder.cs
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//
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// Authors:
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// Marek Safar <marek.safar@gmail.com>
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//
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// Copyright (C) 2009 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Dynamic;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using Compiler = Mono.CSharp;
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namespace Microsoft.CSharp.RuntimeBinder
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{
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class CSharpUnaryOperationBinder : UnaryOperationBinder
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{
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IList<CSharpArgumentInfo> argumentInfo;
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readonly CSharpBinderFlags flags;
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readonly Type context;
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public CSharpUnaryOperationBinder (ExpressionType operation, CSharpBinderFlags flags, Type context, IEnumerable<CSharpArgumentInfo> argumentInfo)
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: base (operation)
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{
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this.argumentInfo = argumentInfo.ToReadOnly ();
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if (this.argumentInfo.Count != 1)
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throw new ArgumentException ("Unary operation requires 1 argument");
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this.flags = flags;
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this.context = context;
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}
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Compiler.Unary.Operator GetOperator ()
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{
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switch (Operation) {
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case ExpressionType.Negate:
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return Compiler.Unary.Operator.UnaryNegation;
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case ExpressionType.Not:
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return Compiler.Unary.Operator.LogicalNot;
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case ExpressionType.OnesComplement:
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return Compiler.Unary.Operator.OnesComplement;
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case ExpressionType.UnaryPlus:
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return Compiler.Unary.Operator.UnaryPlus;
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default:
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throw new NotImplementedException (Operation.ToString ());
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}
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}
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public override DynamicMetaObject FallbackUnaryOperation (DynamicMetaObject target, DynamicMetaObject errorSuggestion)
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{
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var ctx = DynamicContext.Create ();
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var expr = ctx.CreateCompilerExpression (argumentInfo [0], target);
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if (Operation == ExpressionType.IsTrue) {
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expr = new Compiler.BooleanExpression (expr);
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} else if (Operation == ExpressionType.IsFalse) {
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expr = new Compiler.BooleanExpressionFalse (expr);
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} else {
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if (Operation == ExpressionType.Increment)
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expr = new Compiler.UnaryMutator (Compiler.UnaryMutator.Mode.PreIncrement, expr, Compiler.Location.Null);
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else if (Operation == ExpressionType.Decrement)
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expr = new Compiler.UnaryMutator (Compiler.UnaryMutator.Mode.PreDecrement, expr, Compiler.Location.Null);
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else
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expr = new Compiler.Unary (GetOperator (), expr, Compiler.Location.Null);
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expr = new Compiler.Cast (new Compiler.TypeExpression (ctx.ImportType (ReturnType), Compiler.Location.Null), expr, Compiler.Location.Null);
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if ((flags & CSharpBinderFlags.CheckedContext) != 0)
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expr = new Compiler.CheckedExpr (expr, Compiler.Location.Null);
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}
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var binder = new CSharpBinder (this, expr, errorSuggestion);
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binder.AddRestrictions (target);
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return binder.Bind (ctx, context);
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}
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}
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}
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