1324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver/* 2324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * [The "BSD licence"] 3324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Copyright (c) 2005-2008 Terence Parr 4324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * All rights reserved. 5324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 6324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Conversion to C#: 7324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc. 8324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * All rights reserved. 9324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 10324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Redistribution and use in source and binary forms, with or without 11324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * modification, are permitted provided that the following conditions 12324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * are met: 13324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 1. Redistributions of source code must retain the above copyright 14324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * notice, this list of conditions and the following disclaimer. 15324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 2. Redistributions in binary form must reproduce the above copyright 16324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * notice, this list of conditions and the following disclaimer in the 17324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * documentation and/or other materials provided with the distribution. 18324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 3. The name of the author may not be used to endorse or promote products 19324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * derived from this software without specific prior written permission. 20324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 21324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruvernamespace Antlr.Runtime.Tree { 34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver using ArgumentNullException = System.ArgumentNullException; 35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver using CLSCompliant = System.CLSCompliantAttribute; 36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** <summary> 38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * A tree node that is wrapper for a Token object. After 3.0 release 39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * while building tree rewrite stuff, it became clear that computing 40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * parent and child index is very difficult and cumbersome. Better to 41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * spend the space in every tree node. If you don't want these extra 42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * fields, it's easy to cut them out in your own BaseTree subclass. 43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * </summary> 44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver [System.Serializable] 46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public class CommonTree : BaseTree { 47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** <summary>A single token is the payload</summary> */ 48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver [CLSCompliant(false)] 49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public IToken token; 50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** <summary> 52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * What token indexes bracket all tokens associated with this node 53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * and below? 54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * </summary> 55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver protected int startIndex = -1; 57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver protected int stopIndex = -1; 58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** <summary>Who is the parent node of this node; if null, implies node is root</summary> */ 60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver CommonTree parent; 61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** <summary>What index is this node in the child list? Range: 0..n-1</summary> */ 63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver int childIndex = -1; 64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public CommonTree() { 66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 68324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public CommonTree(CommonTree node) 69324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver : base(node) { 70324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (node == null) 71324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver throw new ArgumentNullException("node"); 72324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 73324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver this.token = node.token; 74324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver this.startIndex = node.startIndex; 75324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver this.stopIndex = node.stopIndex; 76324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 77324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 78324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public CommonTree(IToken t) { 79324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver this.token = t; 80324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 81324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 82324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver #region Properties 83324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override int CharPositionInLine { 84324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 85324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (token == null || token.CharPositionInLine == -1) { 86324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (ChildCount > 0) { 87324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return Children[0].CharPositionInLine; 88324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 89324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return 0; 90324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 91324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token.CharPositionInLine; 92324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 93324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 94324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver base.CharPositionInLine = value; 95324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 96324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 97324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override int ChildIndex { 98324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 99324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return childIndex; 100324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 101324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 102324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver childIndex = value; 103324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 104324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 105324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override bool IsNil { 106324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 107324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token == null; 108324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 109324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 110324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override int Line { 111324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 112324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (token == null || token.Line == 0) { 113324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (ChildCount > 0) { 114324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return Children[0].Line; 115324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 116324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return 0; 117324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 118324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token.Line; 119324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 120324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 121324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver base.Line = value; 122324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 123324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 124324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override ITree Parent { 125324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 126324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return parent; 127324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 128324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 129324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver parent = (CommonTree)value; 130324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 131324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 132324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override string Text { 133324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 134324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (token == null) 135324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return null; 136324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 137324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token.Text; 138324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 139324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 140324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 141324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 142324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public virtual IToken Token { 143324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 144324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token; 145324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 146324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 147324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver token = value; 148324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 149324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 150324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override int TokenStartIndex { 151324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 152324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (startIndex == -1 && token != null) { 153324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token.TokenIndex; 154324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 155324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return startIndex; 156324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 157324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 158324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver startIndex = value; 159324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 160324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 161324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override int TokenStopIndex { 162324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 163324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (stopIndex == -1 && token != null) { 164324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token.TokenIndex; 165324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 166324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return stopIndex; 167324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 168324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 169324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stopIndex = value; 170324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 171324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 172324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override int Type { 173324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver get { 174324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (token == null) 175324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return TokenTypes.Invalid; 176324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 177324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token.Type; 178324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 179324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver set { 180324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 181324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 182324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver #endregion 183324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 184324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override ITree DupNode() { 185324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return new CommonTree(this); 186324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 187324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 188324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** <summary> 189324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * For every node in this subtree, make sure it's start/stop token's 190324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * are set. Walk depth first, visit bottom up. Only updates nodes 191324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * with at least one token index < 0. 192324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * </summary> 193324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 194324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public virtual void SetUnknownTokenBoundaries() { 195324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (Children == null) { 196324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (startIndex < 0 || stopIndex < 0) { 197324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver startIndex = stopIndex = token.TokenIndex; 198324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 199324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return; 200324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 201324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver for (int i = 0; i < Children.Count; i++) { 202324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver ((CommonTree)Children[i]).SetUnknownTokenBoundaries(); 203324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 204324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (startIndex >= 0 && stopIndex >= 0) 205324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return; // already set 206324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (Children.Count > 0) { 207324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver CommonTree firstChild = (CommonTree)Children[0]; 208324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver CommonTree lastChild = (CommonTree)Children[Children.Count - 1]; 209324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver startIndex = firstChild.TokenStartIndex; 210324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver stopIndex = lastChild.TokenStopIndex; 211324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 212324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 213324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 214324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public override string ToString() { 215324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (IsNil) { 216324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return "nil"; 217324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 218324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (Type == TokenTypes.Invalid) { 219324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return "<errornode>"; 220324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 221324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (token == null) { 222324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return string.Empty; 223324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 224324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return token.Text; 225324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 226324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 227324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver} 228