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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.VB/Ast/Statements/BlockStatement.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/Statements/BlockStatement.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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namespace ICSharpCode.NRefactory.VB.Ast
 
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{
 
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        /// <summary>
 
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        /// { Statements }
 
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        /// </summary>
 
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        public class BlockStatement : Statement, IEnumerable<Statement>
 
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        {
 
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                public static readonly Role<Statement> StatementRole = new Role<Statement>("Statement", Statement.Null);
 
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                #region Null
 
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                public static readonly new BlockStatement Null = new NullBlockStatement();
 
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                sealed class NullBlockStatement : BlockStatement
 
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                {
 
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                        public override bool IsNull {
 
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                                get {
 
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                                        return true;
 
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                                }
 
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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 default(S);
 
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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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                                return other == null || other.IsNull;
 
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                        }
 
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                }
 
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                #endregion
 
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                #region PatternPlaceholder
 
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                public static implicit operator BlockStatement(PatternMatching.Pattern pattern)
 
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                {
 
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                        return pattern != null ? new PatternPlaceholder(pattern) : null;
 
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                }
 
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                sealed class PatternPlaceholder : BlockStatement, PatternMatching.INode
 
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                {
 
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                        readonly PatternMatching.Pattern child;
 
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                        public PatternPlaceholder(PatternMatching.Pattern child)
 
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                        {
 
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                                this.child = child;
 
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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.VisitPatternPlaceholder(this, child, 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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                                return child.DoMatch(other, match);
 
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                        }
 
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                        bool PatternMatching.INode.DoMatchCollection(Role role, PatternMatching.INode pos, PatternMatching.Match match, PatternMatching.BacktrackingInfo backtrackingInfo)
 
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                        {
 
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                                return child.DoMatchCollection(role, pos, match, backtrackingInfo);
 
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                        }
 
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                }
 
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                #endregion
 
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                public AstNodeCollection<Statement> Statements {
 
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                        get { return GetChildrenByRole (StatementRole); }
 
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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.VisitBlockStatement (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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                        BlockStatement o = other as BlockStatement;
 
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                        return o != null && !(o is CatchBlock) && !o.IsNull && this.Statements.DoMatch(o.Statements, match);
 
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                }
 
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                #region Builder methods
 
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                public void Add(Statement statement)
 
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                {
 
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                        AddChild(statement, StatementRole);
 
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                }
 
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                public void Add(Expression expression)
 
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                {
 
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                        AddChild(new ExpressionStatement { Expression = expression }, StatementRole);
 
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                }
 
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                public void AddRange(IEnumerable<Statement> statements)
 
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                {
 
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                        foreach (Statement st in statements)
 
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                                AddChild(st, StatementRole);
 
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                }
 
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                public void AddAssignment(Expression left, Expression right)
 
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                {
 
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                        Add(new AssignmentExpression(left, AssignmentOperatorType.Assign, right));
 
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                }
 
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                public void AddReturnStatement(Expression expression)
 
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                {
 
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                        Add(new ReturnStatement { Expression = expression });
 
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                }
 
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                #endregion
 
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                IEnumerator<Statement> IEnumerable<Statement>.GetEnumerator()
 
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                {
 
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                        return this.Statements.GetEnumerator();
 
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                }
 
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                System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
 
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                {
 
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                        return this.Statements.GetEnumerator();
 
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                }
 
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        }
 
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}