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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.VB/Ast/General/AttributedNode.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
Import upstream version 4.0.5+dfsg

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external/nrefactory/ICSharpCode.NRefactory.VB/Ast/General/AttributedNode.cs
 
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 
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// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
 
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using System;
 
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using System.Collections.Generic;
 
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using System.Linq;
 
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namespace ICSharpCode.NRefactory.VB.Ast
 
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{
 
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        public abstract class AttributedNode : AstNode
 
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        {
 
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                public AstNodeCollection<AttributeBlock> Attributes {
 
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                        get { return GetChildrenByRole(AttributeBlock.AttributeBlockRole); }
 
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                }
 
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                public static readonly Role<VBModifierToken> ModifierRole = new Role<VBModifierToken>("Modifier");
 
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                public Modifiers Modifiers {
 
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                        get { return GetModifiers(this); }
 
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                        set { SetModifiers(this, value); }
 
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                }
 
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                public AstNodeCollection<VBModifierToken> ModifierTokens {
 
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                        get { return GetChildrenByRole (ModifierRole); }
 
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                }
 
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                internal static Modifiers GetModifiers(AstNode node)
 
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                {
 
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                        Modifiers m = 0;
 
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                        foreach (VBModifierToken t in node.GetChildrenByRole (ModifierRole)) {
 
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                                m |= t.Modifier;
 
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                        }
 
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                        return m;
 
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                }
 
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                internal static void SetModifiers(AstNode node, Modifiers newValue)
 
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                {
 
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                        Modifiers oldValue = GetModifiers(node);
 
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                        AstNode insertionPos = node.GetChildrenByRole(Attribute.AttributeRole).LastOrDefault();
 
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                        foreach (Modifiers m in VBModifierToken.AllModifiers) {
 
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                                if ((m & newValue) != 0) {
 
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                                        if ((m & oldValue) == 0) {
 
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                                                // Modifier was added
 
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                                                var newToken = new VBModifierToken(TextLocation.Empty, m);
 
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                                                node.InsertChildAfter(insertionPos, newToken, ModifierRole);
 
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                                                insertionPos = newToken;
 
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                                        } else {
 
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                                                // Modifier already exists
 
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                                                insertionPos = node.GetChildrenByRole(ModifierRole).First(t => t.Modifier == m);
 
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                                        }
 
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                                } else {
 
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                                        if ((m & oldValue) != 0) {
 
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                                                // Modifier was removed
 
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                                                node.GetChildrenByRole (ModifierRole).First(t => t.Modifier == m).Remove();
 
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                                        }
 
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                                }
 
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                        }
 
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                }
 
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                protected bool MatchAttributesAndModifiers(AttributedNode o, PatternMatching.Match match)
 
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                {
 
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                        return (this.Modifiers == Modifiers.Any || this.Modifiers == o.Modifiers) && this.Attributes.DoMatch(o.Attributes, match);
 
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                }
 
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        }
 
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}