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118 lines
3.9 KiB
JavaScript
118 lines
3.9 KiB
JavaScript
/* 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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"use strict";
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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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this.$row = 0;
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return null;
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}
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this.$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.$row >= rowCount) {
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this.$row = rowCount - 1;
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return null;
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}
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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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