EditSession.findMatchingBracket now uses tokens instead of a simple text search. Moved the bracket-matching code to a separate file edit_session/bracket_match.js. Added a TokenIterator helper class, which walks forward or backward through all tokens in the document.
This commit is contained in:
dgeorge
parent
b8d2d96387
commit
e0048b4967
5 changed files with 300 additions and 94 deletions
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@ -612,98 +612,6 @@ var EditSession = function(text, mode) {
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return this.doc.getTextRange(range);
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};
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this.findMatchingBracket = function(position) {
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if (position.column == 0) return null;
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var charBeforeCursor = this.getLine(position.row).charAt(position.column-1);
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if (charBeforeCursor == "") return null;
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var match = charBeforeCursor.match(/([\(\[\{])|([\)\]\}])/);
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if (!match) {
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return null;
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}
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if (match[1]) {
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return this.$findClosingBracket(match[1], position);
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} else {
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return this.$findOpeningBracket(match[2], position);
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}
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};
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this.$brackets = {
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")": "(",
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"(": ")",
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"]": "[",
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"[": "]",
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"{": "}",
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"}": "{"
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};
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this.$findOpeningBracket = function(bracket, position) {
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var openBracket = this.$brackets[bracket];
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var column = position.column - 2;
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var row = position.row;
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var depth = 1;
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var line = this.getLine(row);
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while (true) {
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while(column >= 0) {
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var ch = line.charAt(column);
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if (ch == openBracket) {
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depth -= 1;
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if (depth == 0) {
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return {row: row, column: column};
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}
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}
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else if (ch == bracket) {
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depth +=1;
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}
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column -= 1;
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}
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row -=1;
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if (row < 0) break;
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var line = this.getLine(row);
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var column = line.length-1;
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}
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return null;
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};
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this.$findClosingBracket = function(bracket, position) {
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var closingBracket = this.$brackets[bracket];
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var column = position.column;
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var row = position.row;
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var depth = 1;
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var line = this.getLine(row);
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var lineCount = this.getLength();
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while (true) {
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while(column < line.length) {
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var ch = line.charAt(column);
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if (ch == closingBracket) {
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depth -= 1;
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if (depth == 0) {
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return {row: row, column: column};
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}
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}
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else if (ch == bracket) {
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depth +=1;
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}
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column += 1;
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}
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row +=1;
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if (row >= lineCount) break;
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var line = this.getLine(row);
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var column = 0;
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}
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return null;
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};
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this.insert = function(position, text) {
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return this.doc.insert(position, text);
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};
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@ -1732,6 +1640,7 @@ var EditSession = function(text, mode) {
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}).call(EditSession.prototype);
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require("ace/edit_session/folding").Folding.call(EditSession.prototype);
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require("ace/edit_session/bracket_match").BracketMatch.call(EditSession.prototype);
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exports.EditSession = EditSession;
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});
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174
lib/ace/edit_session/bracket_match.js
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174
lib/ace/edit_session/bracket_match.js
Normal file
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@ -0,0 +1,174 @@
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/* vim:ts=4:sts=4:sw=4:
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Ajax.org Code Editor (ACE).
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*
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* The Initial Developer of the Original Code is
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* Ajax.org B.V.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Fabian Jakobs <fabian AT ajax DOT org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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var TokenIterator = require("ace/token_iterator").TokenIterator;
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function BracketMatch() {
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this.findMatchingBracket = function(position) {
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if (position.column == 0) return null;
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var charBeforeCursor = this.getLine(position.row).charAt(position.column-1);
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if (charBeforeCursor == "") return null;
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var match = charBeforeCursor.match(/([\(\[\{])|([\)\]\}])/);
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if (!match) {
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return null;
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}
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if (match[1]) {
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return this.$findClosingBracket(match[1], position);
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} else {
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return this.$findOpeningBracket(match[2], position);
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}
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};
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this.$brackets = {
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")": "(",
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"(": ")",
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"]": "[",
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"[": "]",
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"{": "}",
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"}": "{"
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};
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this.$findOpeningBracket = function(bracket, position) {
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var openBracket = this.$brackets[bracket];
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var depth = 1;
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var iterator = new TokenIterator(this, position.row, position.column);
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var token = iterator.getCurrentToken();
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if (!token) return null;
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// Create a pattern that matches any token with the same type as token.type.
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// Exception: if token.type includes "rparen", then also match "lparen".
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var typeRe = new RegExp("(\\.?[" +
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token.type.replace(".", "|").replace("rparen", "lparen|rparen") + "])+");
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// Start searching in token, just before the character at position.column
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var vIndex = position.column - iterator.getCurrentTokenColumn() - 2;
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var value = token.value;
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while (true) {
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while (vIndex >= 0) {
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var char = value.charAt(vIndex);
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if (char == openBracket) {
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depth -= 1;
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if (depth == 0) {
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return {row: iterator.getCurrentTokenRow(),
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column: vIndex + iterator.getCurrentTokenColumn()};
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}
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}
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else if (char == bracket) {
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depth += 1;
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}
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vIndex -= 1;
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}
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// Scan backward through the document, looking for the next token
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// whose type matches typeRe
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do {
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token = iterator.stepBackward();
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} while (token && !typeRe.test(token.type))
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if (token == null)
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break;
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value = token.value;
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vIndex = token.value.length - 1;
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}
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return null;
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};
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this.$findClosingBracket = function(bracket, position) {
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var closingBracket = this.$brackets[bracket];
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var depth = 1;
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var iterator = new TokenIterator(this, position.row, position.column);
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var token = iterator.getCurrentToken();
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if (!token) return null;
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// Create a pattern that matches any token with the same type as token.type.
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// Exception: if token.type includes "lparen", then also match "rparen".
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var typeRe = new RegExp("(\\.?[" +
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token.type.replace(".", "|").replace("lparen", "lparen|rparen") + "])+");
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// Start searching in token, after after the character at position.column
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var vIndex = position.column - iterator.getCurrentTokenColumn();
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while (true) {
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var value = token.value;
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var valueLength = value.length;
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while (vIndex < valueLength) {
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var char = value.charAt(vIndex);
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if (char == closingBracket) {
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depth -= 1;
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if (depth == 0) {
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return {row: iterator.getCurrentTokenRow(),
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column: vIndex + iterator.getCurrentTokenColumn()};
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}
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}
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else if (char == bracket) {
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depth += 1;
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}
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vIndex += 1;
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}
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// Scan forward through the document, looking for the next token
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// whose type matches typeRe
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do {
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token = iterator.stepForward();
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} while (token && !typeRe.test(token.type))
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if (token == null)
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break;
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vIndex = 0;
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}
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return null;
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};
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}
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exports.BracketMatch = BracketMatch;
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});
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@ -50,6 +50,7 @@ var UndoManager = require("ace/undomanager").UndoManager;
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var MockRenderer = require("ace/test/mockrenderer").MockRenderer;
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var Range = require("ace/range").Range;
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var assert = require("ace/test/assertions");
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var JavaScriptMode = require("ace/mode/javascript").Mode;
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function createFoldTestSession() {
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var lines = [
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@ -69,7 +70,7 @@ function createFoldTestSession() {
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module.exports = {
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"test: find matching opening bracket" : function() {
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"test: find matching opening bracket in Text mode" : function() {
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var session = new EditSession(["(()(", "())))"]);
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assert.position(session.findMatchingBracket({row: 0, column: 3}), 0, 1);
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@ -79,6 +80,16 @@ module.exports = {
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assert.equal(session.findMatchingBracket({row: 1, column: 5}), null);
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},
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"test: find matching opening bracket in JavaScript mode" : function() {
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var session = new EditSession(["(()(", "", "())))"], new JavaScriptMode());
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assert.position(session.findMatchingBracket({row: 0, column: 3}), 0, 1);
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assert.position(session.findMatchingBracket({row: 2, column: 2}), 2, 0);
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assert.position(session.findMatchingBracket({row: 2, column: 3}), 0, 3);
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assert.position(session.findMatchingBracket({row: 2, column: 4}), 0, 0);
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assert.equal(session.findMatchingBracket({row: 2, column: 5}), null);
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},
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"test: find matching closing bracket" : function() {
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var session = new EditSession(["(()(", "())))"]);
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@ -141,7 +141,7 @@ module.exports = {
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},
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"test: auto outdent should indent the line with the same indent as the line with the matching opening brace" : function() {
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var session = new EditSession([" function foo() {", " bla", " }"]);
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var session = new EditSession([" function foo() {", " bla", " }"], new JavaScriptMode());
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this.mode.autoOutdent("start", session, 2);
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assert.equal(" }", session.getLine(2));
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},
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112
lib/ace/token_iterator.js
Normal file
112
lib/ace/token_iterator.js
Normal file
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@ -0,0 +1,112 @@
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/* vim:ts=4:sts=4:sw=4:
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Ajax.org Code Editor (ACE).
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*
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* The Initial Developer of the Original Code is
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* Ajax.org B.V.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Fabian Jakobs <fabian AT ajax DOT org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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var TokenIterator = function(session, initialRow, initialColumn) {
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this.$session = session;
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this.$row = initialRow;
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this.$rowTokens = session.getTokens(initialRow, initialRow)[0].tokens;
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var token = session.getTokenAt(initialRow, initialColumn);
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this.$tokenIndex = token ? token.index : -1;
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};
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(function() {
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this.stepBackward = function() {
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this.$tokenIndex -= 1;
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while (this.$tokenIndex < 0) {
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this.$row -= 1;
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if (this.$row < 0)
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return null;
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this.$rowTokens = this.$session.getTokens(this.$row, this.$row)[0].tokens;
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this.$tokenIndex = this.$rowTokens.length - 1;
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}
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return this.$rowTokens[this.$tokenIndex];
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}
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this.stepForward = function() {
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var rowCount = this.$session.getLength();
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this.$tokenIndex += 1;
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while (this.$tokenIndex >= this.$rowTokens.length) {
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this.$row += 1;
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if (this.$row >= rowCount)
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return null;
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this.$rowTokens = this.$session.getTokens(this.$row, this.$row)[0].tokens;
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this.$tokenIndex = 0;
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}
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return this.$rowTokens[this.$tokenIndex];
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}
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this.getCurrentToken = function () {
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return this.$rowTokens[this.$tokenIndex];
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}
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this.getCurrentTokenRow = function () {
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return this.$row;
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}
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this.getCurrentTokenColumn = function() {
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var rowTokens = this.$rowTokens;
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var tokenIndex = this.$tokenIndex;
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// If a column was cached by EditSession.getTokenAt, then use it
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var column = rowTokens[tokenIndex].start;
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if (column !== undefined)
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return column;
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column = 0;
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while (tokenIndex > 0) {
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tokenIndex -= 1;
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column += rowTokens[tokenIndex].value.length;
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}
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return column;
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}
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}).call(TokenIterator.prototype);
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exports.TokenIterator = TokenIterator;
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});
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