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