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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.CSharp/Ast/Expressions/BinaryOperatorExpression.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
ImportĀ upstreamĀ versionĀ 4.0.5+dfsg

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external/nrefactory/ICSharpCode.NRefactory.CSharp/Ast/Expressions/BinaryOperatorExpression.cs
 
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ļ»æ// 
 
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// BinaryOperatorExpression.cs
 
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//
 
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// Author:
 
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//       Mike KrĆ¼ger <mkrueger@novell.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 a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// 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, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using System.Linq.Expressions;
 
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namespace ICSharpCode.NRefactory.CSharp
 
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{
 
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        /// <summary>
 
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        /// Left Operator Right
 
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        /// </summary>
 
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        public class BinaryOperatorExpression : Expression
 
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        {
 
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                public readonly static TokenRole BitwiseAndRole = new TokenRole ("&");
 
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                public readonly static TokenRole BitwiseOrRole = new TokenRole ("|");
 
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                public readonly static TokenRole ConditionalAndRole = new TokenRole ("&&");
 
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                public readonly static TokenRole ConditionalOrRole = new TokenRole ("||");
 
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                public readonly static TokenRole ExclusiveOrRole = new TokenRole ("^");
 
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                public readonly static TokenRole GreaterThanRole = new TokenRole (">");
 
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                public readonly static TokenRole GreaterThanOrEqualRole = new TokenRole (">=");
 
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                public readonly static TokenRole EqualityRole = new TokenRole ("==");
 
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                public readonly static TokenRole InEqualityRole = new TokenRole ("!=");
 
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                public readonly static TokenRole LessThanRole = new TokenRole ("<");
 
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                public readonly static TokenRole LessThanOrEqualRole = new TokenRole ("<=");
 
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                public readonly static TokenRole AddRole = new TokenRole ("+");
 
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                public readonly static TokenRole SubtractRole = new TokenRole ("-");
 
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                public readonly static TokenRole MultiplyRole = new TokenRole ("*");
 
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                public readonly static TokenRole DivideRole = new TokenRole ("/");
 
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                public readonly static TokenRole ModulusRole = new TokenRole ("%");
 
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                public readonly static TokenRole ShiftLeftRole = new TokenRole ("<<");
 
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                public readonly static TokenRole ShiftRightRole = new TokenRole (">>");
 
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                public readonly static TokenRole NullCoalescingRole = new TokenRole ("??");
 
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                public readonly static Role<Expression> LeftRole = new Role<Expression>("Left", Expression.Null);
 
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                public readonly static Role<Expression> RightRole = new Role<Expression>("Right", Expression.Null);
 
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                public BinaryOperatorExpression()
 
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                {
 
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                }
 
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                public BinaryOperatorExpression(Expression left, BinaryOperatorType op, Expression right)
 
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                {
 
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                        this.Left = left;
 
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                        this.Operator = op;
 
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                        this.Right = right;
 
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                }
 
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                public BinaryOperatorType Operator {
 
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                        get;
 
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                        set;
 
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                }
 
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                public Expression Left {
 
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                        get { return GetChildByRole (LeftRole); }
 
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                        set { SetChildByRole(LeftRole, value); }
 
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                }
 
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                public CSharpTokenNode OperatorToken {
 
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                        get { return GetChildByRole (GetOperatorRole (Operator)); }
 
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                }
 
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                public Expression Right {
 
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                        get { return GetChildByRole (RightRole); }
 
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                        set { SetChildByRole (RightRole, value); }
 
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                }
 
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                public override void AcceptVisitor (IAstVisitor visitor)
 
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                {
 
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                        visitor.VisitBinaryOperatorExpression (this);
 
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                }
 
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                public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
 
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                {
 
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                        return visitor.VisitBinaryOperatorExpression (this);
 
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                }
 
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                public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
 
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                {
 
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                        return visitor.VisitBinaryOperatorExpression (this, data);
 
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                }
 
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                protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
 
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                {
 
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                        BinaryOperatorExpression o = other as BinaryOperatorExpression;
 
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                        return o != null && (this.Operator == BinaryOperatorType.Any || this.Operator == o.Operator)
 
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                                && this.Left.DoMatch(o.Left, match) && this.Right.DoMatch(o.Right, match);
 
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                }
 
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                public static TokenRole GetOperatorRole (BinaryOperatorType op)
 
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                {
 
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                        switch (op) {
 
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                                case BinaryOperatorType.BitwiseAnd:
 
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                                        return BitwiseAndRole;
 
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                                case BinaryOperatorType.BitwiseOr:
 
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                                        return BitwiseOrRole;
 
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                                case BinaryOperatorType.ConditionalAnd:
 
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                                        return ConditionalAndRole;
 
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                                case BinaryOperatorType.ConditionalOr:
 
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                                        return ConditionalOrRole;
 
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                                case BinaryOperatorType.ExclusiveOr:
 
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                                        return ExclusiveOrRole;
 
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                                case BinaryOperatorType.GreaterThan:
 
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                                        return GreaterThanRole;
 
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                                case BinaryOperatorType.GreaterThanOrEqual:
 
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                                        return GreaterThanOrEqualRole;
 
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                                case BinaryOperatorType.Equality:
 
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                                        return EqualityRole;
 
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                                case BinaryOperatorType.InEquality:
 
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                                        return InEqualityRole;
 
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                                case BinaryOperatorType.LessThan:
 
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                                        return LessThanRole;
 
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                                case BinaryOperatorType.LessThanOrEqual:
 
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                                        return LessThanOrEqualRole;
 
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                                case BinaryOperatorType.Add:
 
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                                        return AddRole;
 
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                                case BinaryOperatorType.Subtract:
 
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                                        return SubtractRole;
 
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                                case BinaryOperatorType.Multiply:
 
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                                        return MultiplyRole;
 
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                                case BinaryOperatorType.Divide:
 
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                                        return DivideRole;
 
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                                case BinaryOperatorType.Modulus:
 
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                                        return ModulusRole;
 
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                                case BinaryOperatorType.ShiftLeft:
 
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                                        return ShiftLeftRole;
 
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                                case BinaryOperatorType.ShiftRight:
 
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                                        return ShiftRightRole;
 
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                                case BinaryOperatorType.NullCoalescing:
 
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                                        return NullCoalescingRole;
 
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                                default:
 
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                                        throw new NotSupportedException("Invalid value for BinaryOperatorType");
 
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                        }
 
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                }
 
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                public static ExpressionType GetLinqNodeType(BinaryOperatorType op, bool checkForOverflow)
 
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                {
 
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                        switch (op) {
 
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                                case BinaryOperatorType.BitwiseAnd:
 
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                                        return ExpressionType.And;
 
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                                case BinaryOperatorType.BitwiseOr:
 
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                                        return ExpressionType.Or;
 
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                                case BinaryOperatorType.ConditionalAnd:
 
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                                        return ExpressionType.AndAlso;
 
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                                case BinaryOperatorType.ConditionalOr:
 
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                                        return ExpressionType.OrElse;
 
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                                case BinaryOperatorType.ExclusiveOr:
 
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                                        return ExpressionType.ExclusiveOr;
 
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                                case BinaryOperatorType.GreaterThan:
 
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                                        return ExpressionType.GreaterThan;
 
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                                case BinaryOperatorType.GreaterThanOrEqual:
 
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                                        return ExpressionType.GreaterThanOrEqual;
 
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                                case BinaryOperatorType.Equality:
 
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                                        return ExpressionType.Equal;
 
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                                case BinaryOperatorType.InEquality:
 
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                                        return ExpressionType.NotEqual;
 
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                                case BinaryOperatorType.LessThan:
 
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                                        return ExpressionType.LessThan;
 
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                                case BinaryOperatorType.LessThanOrEqual:
 
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                                        return ExpressionType.LessThanOrEqual;
 
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                                case BinaryOperatorType.Add:
 
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                                        return checkForOverflow ? ExpressionType.AddChecked : ExpressionType.Add;
 
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                                case BinaryOperatorType.Subtract:
 
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                                        return checkForOverflow ? ExpressionType.SubtractChecked : ExpressionType.Subtract;
 
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                                case BinaryOperatorType.Multiply:
 
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                                        return checkForOverflow ? ExpressionType.MultiplyChecked : ExpressionType.Multiply;
 
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                                case BinaryOperatorType.Divide:
 
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                                        return ExpressionType.Divide;
 
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                                case BinaryOperatorType.Modulus:
 
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                                        return ExpressionType.Modulo;
 
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                                case BinaryOperatorType.ShiftLeft:
 
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                                        return ExpressionType.LeftShift;
 
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                                case BinaryOperatorType.ShiftRight:
 
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                                        return ExpressionType.RightShift;
 
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                                case BinaryOperatorType.NullCoalescing:
 
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                                        return ExpressionType.Coalesce;
 
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                                default:
 
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                                        throw new NotSupportedException("Invalid value for BinaryOperatorType");
 
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                        }
 
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                }
 
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        }
 
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        public enum BinaryOperatorType
 
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        {
 
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                /// <summary>
 
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                /// Any binary operator (used in pattern matching)
 
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                /// </summary>
 
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                Any,
 
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                // We avoid 'logical or' on purpose, because it's not clear if that refers to the bitwise
 
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                // or to the short-circuiting (conditional) operator:
 
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                // MCS and old NRefactory used bitwise='|', logical='||'
 
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                // but the C# spec uses logical='|', conditional='||'
 
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                /// <summary>left &amp; right</summary>
 
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                BitwiseAnd,
 
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                /// <summary>left | right</summary>
 
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                BitwiseOr,
 
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                /// <summary>left &amp;&amp; right</summary>
 
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                ConditionalAnd,
 
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                /// <summary>left || right</summary>
 
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                ConditionalOr,
 
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                /// <summary>left ^ right</summary>
 
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                ExclusiveOr,
 
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                /// <summary>left &gt; right</summary>
 
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                GreaterThan,
 
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                /// <summary>left &gt;= right</summary>
 
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                GreaterThanOrEqual,
 
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                /// <summary>left == right</summary>
 
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                Equality,
 
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                /// <summary>left != right</summary>
 
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                InEquality,
 
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                /// <summary>left &lt; right</summary>
 
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                LessThan,
 
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                /// <summary>left &lt;= right</summary>
 
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                LessThanOrEqual,
 
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                /// <summary>left + right</summary>
 
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                Add,
 
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                /// <summary>left - right</summary>
 
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                Subtract,
 
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                /// <summary>left * right</summary>
 
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                Multiply,
 
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                /// <summary>left / right</summary>
 
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                Divide,
 
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                /// <summary>left % right</summary>
 
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                Modulus,
 
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                /// <summary>left &lt;&lt; right</summary>
 
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                ShiftLeft,
 
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                /// <summary>left &gt;&gt; right</summary>
 
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                ShiftRight,
 
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                /// <summary>left ?? right</summary>
 
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                NullCoalescing
 
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        }
 
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}