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Diffstat (limited to 'runtime/CSharp3/Sources/Antlr3.Runtime/Tree/CommonTree.cs')
| -rw-r--r-- | runtime/CSharp3/Sources/Antlr3.Runtime/Tree/CommonTree.cs | 296 |
1 files changed, 0 insertions, 296 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/CommonTree.cs b/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/CommonTree.cs deleted file mode 100644 index 33f9bda..0000000 --- a/runtime/CSharp3/Sources/Antlr3.Runtime/Tree/CommonTree.cs +++ /dev/null @@ -1,296 +0,0 @@ -/* - * [The "BSD licence"] - * Copyright (c) 2011 Terence Parr - * All rights reserved. - * - * Conversion to C#: - * Copyright (c) 2011 Sam Harwell, Pixel Mine, Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -namespace Antlr.Runtime.Tree -{ - using ArgumentNullException = System.ArgumentNullException; - - /** <summary> - * A tree node that is wrapper for a Token object. After 3.0 release - * while building tree rewrite stuff, it became clear that computing - * parent and child index is very difficult and cumbersome. Better to - * spend the space in every tree node. If you don't want these extra - * fields, it's easy to cut them out in your own BaseTree subclass. - * </summary> - */ - [System.Serializable] - public class CommonTree : BaseTree - { - /** <summary>A single token is the payload</summary> */ - private IToken _token; - - /** <summary> - * What token indexes bracket all tokens associated with this node - * and below? - * </summary> - */ - protected int startIndex = -1; - protected int stopIndex = -1; - - /** <summary>Who is the parent node of this node; if null, implies node is root</summary> */ - CommonTree parent; - - /** <summary>What index is this node in the child list? Range: 0..n-1</summary> */ - int childIndex = -1; - - public CommonTree() - { - } - - public CommonTree( CommonTree node ) - : base( node ) - { - if (node == null) - throw new ArgumentNullException("node"); - - this.Token = node.Token; - this.startIndex = node.startIndex; - this.stopIndex = node.stopIndex; - } - - public CommonTree( IToken t ) - { - this.Token = t; - } - - #region Properties - - public override int CharPositionInLine - { - get - { - if ( Token == null || Token.CharPositionInLine == -1 ) - { - if ( ChildCount > 0 ) - return Children[0].CharPositionInLine; - - return 0; - } - return Token.CharPositionInLine; - } - - set - { - base.CharPositionInLine = value; - } - } - - public override int ChildIndex - { - get - { - return childIndex; - } - - set - { - childIndex = value; - } - } - - public override bool IsNil - { - get - { - return Token == null; - } - } - - public override int Line - { - get - { - if ( Token == null || Token.Line == 0 ) - { - if ( ChildCount > 0 ) - return Children[0].Line; - - return 0; - } - - return Token.Line; - } - - set - { - base.Line = value; - } - } - - public override ITree Parent - { - get - { - return parent; - } - - set - { - parent = (CommonTree)value; - } - } - - public override string Text - { - get - { - if ( Token == null ) - return null; - - return Token.Text; - } - - set - { - } - } - - public IToken Token - { - get - { - return _token; - } - - set - { - _token = value; - } - } - - public override int TokenStartIndex - { - get - { - if ( startIndex == -1 && Token != null ) - return Token.TokenIndex; - - return startIndex; - } - - set - { - startIndex = value; - } - } - - public override int TokenStopIndex - { - get - { - if ( stopIndex == -1 && Token != null ) - { - return Token.TokenIndex; - } - return stopIndex; - } - - set - { - stopIndex = value; - } - } - - public override int Type - { - get - { - if ( Token == null ) - return TokenTypes.Invalid; - - return Token.Type; - } - - set - { - } - } - - #endregion - - public override ITree DupNode() - { - return new CommonTree( this ); - } - - /** <summary> - * For every node in this subtree, make sure it's start/stop token's - * are set. Walk depth first, visit bottom up. Only updates nodes - * with at least one token index < 0. - * </summary> - */ - public virtual void SetUnknownTokenBoundaries() - { - if ( Children == null ) - { - if ( startIndex < 0 || stopIndex < 0 ) - startIndex = stopIndex = Token.TokenIndex; - - return; - } - - foreach (ITree childTree in Children) - { - CommonTree commonTree = childTree as CommonTree; - if (commonTree == null) - continue; - - commonTree.SetUnknownTokenBoundaries(); - } - - if ( startIndex >= 0 && stopIndex >= 0 ) - return; // already set - - if ( Children.Count > 0 ) - { - ITree firstChild = Children[0]; - ITree lastChild = Children[Children.Count - 1]; - startIndex = firstChild.TokenStartIndex; - stopIndex = lastChild.TokenStopIndex; - } - } - - public override string ToString() - { - if (IsNil) - return "nil"; - - if (Type == TokenTypes.Invalid) - return "<errornode>"; - - if (Token == null) - return string.Empty; - - return Token.Text; - } - } -} |