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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 LambdaExpression : Expression
{
public static readonly Role<VBModifierToken> ModifierRole = AttributedNode.ModifierRole;
public LambdaExpressionModifiers Modifiers {
get { return GetModifiers(this); }
set { SetModifiers(this, value); }
}
public AstNodeCollection<VBModifierToken> ModifierTokens {
get { return GetChildrenByRole (ModifierRole); }
}
internal static LambdaExpressionModifiers GetModifiers(AstNode node)
{
LambdaExpressionModifiers m = 0;
foreach (VBModifierToken t in node.GetChildrenByRole (ModifierRole)) {
m |= (LambdaExpressionModifiers)t.Modifier;
}
return m;
}
internal static void SetModifiers(AstNode node, LambdaExpressionModifiers newValue)
{
LambdaExpressionModifiers oldValue = GetModifiers(node);
AstNode insertionPos = null;
foreach (Modifiers m in VBModifierToken.AllModifiers) {
if ((m & (Modifiers)newValue) != 0) {
if ((m & (Modifiers)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 & (Modifiers)oldValue) != 0) {
// Modifier was removed
node.GetChildrenByRole (ModifierRole).First(t => t.Modifier == m).Remove();
}
}
}
}
public AstNodeCollection<ParameterDeclaration> Parameters {
get { return GetChildrenByRole(Roles.Parameter); }
}
}
public class SingleLineSubLambdaExpression : LambdaExpression
{
public static readonly Role<Statement> StatementRole = BlockStatement.StatementRole;
public Statement EmbeddedStatement {
get { return GetChildByRole(StatementRole); }
set { SetChildByRole(StatementRole, value); }
}
protected internal override bool DoMatch(AstNode other, ICSharpCode.NRefactory.PatternMatching.Match match)
{
throw new NotImplementedException();
}
public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitSingleLineSubLambdaExpression(this, data);
}
}
public class SingleLineFunctionLambdaExpression : LambdaExpression
{
public Expression EmbeddedExpression {
get { return GetChildByRole(Roles.Expression); }
set { SetChildByRole(Roles.Expression, value); }
}
protected internal override bool DoMatch(AstNode other, ICSharpCode.NRefactory.PatternMatching.Match match)
{
throw new NotImplementedException();
}
public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitSingleLineFunctionLambdaExpression(this, data);
}
}
public class MultiLineLambdaExpression : LambdaExpression
{
public bool IsSub { get; set; }
public BlockStatement Body {
get { return GetChildByRole(Roles.Body); }
set { SetChildByRole(Roles.Body, value); }
}
protected internal override bool DoMatch(AstNode other, ICSharpCode.NRefactory.PatternMatching.Match match)
{
throw new NotImplementedException();
}
public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitMultiLineLambdaExpression(this, data);
}
}
public enum LambdaExpressionModifiers
{
Async = Modifiers.Async,
Iterator = Modifiers.Iterator
}
}
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