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//
// BlockStatement.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System.Collections.Generic;
namespace ICSharpCode.NRefactory.CSharp
{
/// <summary>
/// { Statements }
/// </summary>
public class BlockStatement : Statement, IEnumerable<Statement>
{
public static readonly Role<Statement> StatementRole = new Role<Statement>("Statement", Statement.Null);
#region Null
public static readonly new BlockStatement Null = new NullBlockStatement ();
sealed class NullBlockStatement : BlockStatement
{
public override bool IsNull {
get {
return true;
}
}
public override void AcceptVisitor (IAstVisitor visitor)
{
}
public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
{
return default (T);
}
public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
{
return default (S);
}
protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
{
return other == null || other.IsNull;
}
}
#endregion
#region PatternPlaceholder
public static implicit operator BlockStatement(PatternMatching.Pattern pattern)
{
return pattern != null ? new PatternPlaceholder(pattern) : null;
}
sealed class PatternPlaceholder : BlockStatement, PatternMatching.INode
{
readonly PatternMatching.Pattern child;
public PatternPlaceholder(PatternMatching.Pattern child)
{
this.child = child;
}
public override NodeType NodeType {
get { return NodeType.Pattern; }
}
public override void AcceptVisitor (IAstVisitor visitor)
{
visitor.VisitPatternPlaceholder(this, child);
}
public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
{
return visitor.VisitPatternPlaceholder(this, child);
}
public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitPatternPlaceholder(this, child, data);
}
protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
{
return child.DoMatch(other, match);
}
bool PatternMatching.INode.DoMatchCollection(Role role, PatternMatching.INode pos, PatternMatching.Match match, PatternMatching.BacktrackingInfo backtrackingInfo)
{
return child.DoMatchCollection(role, pos, match, backtrackingInfo);
}
}
#endregion
public CSharpTokenNode LBraceToken {
get { return GetChildByRole (Roles.LBrace); }
}
public AstNodeCollection<Statement> Statements {
get { return GetChildrenByRole (StatementRole); }
}
public CSharpTokenNode RBraceToken {
get { return GetChildByRole (Roles.RBrace); }
}
public override void AcceptVisitor (IAstVisitor visitor)
{
visitor.VisitBlockStatement (this);
}
public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
{
return visitor.VisitBlockStatement (this);
}
public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitBlockStatement (this, data);
}
protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
{
BlockStatement o = other as BlockStatement;
return o != null && !o.IsNull && this.Statements.DoMatch(o.Statements, match);
}
public void Add(Statement statement)
{
AddChild(statement, StatementRole);
}
public void Add(Expression expression)
{
AddChild(new ExpressionStatement(expression), StatementRole);
}
IEnumerator<Statement> IEnumerable<Statement>.GetEnumerator()
{
return this.Statements.GetEnumerator();
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return this.Statements.GetEnumerator();
}
}
}
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