7bbc6b49c0
Group objects now keep track of the range of line numbers for the lines they contain, making specific groups easier to identify. Change-Id: I37873d83e1003d75df7da77e619e23208d1c30b3
117 lines
3.4 KiB
JavaScript
117 lines
3.4 KiB
JavaScript
// Copyright (C) 2016 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the 'License');
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an 'AS IS' BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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(function(window, GrDiffLine) {
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'use strict';
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// Prevent redefinition.
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if (window.GrDiffGroup) { return; }
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function GrDiffGroup(type, opt_lines) {
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this.type = type;
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this.lines = [];
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this.adds = [];
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this.removes = [];
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this.lineRange = {
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left: {start: null, end: null},
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right: {start: null, end: null},
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};
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if (opt_lines) {
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opt_lines.forEach(this.addLine, this);
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}
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}
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GrDiffGroup.prototype.element = null;
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GrDiffGroup.Type = {
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BOTH: 'both',
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CONTEXT_CONTROL: 'contextControl',
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DELTA: 'delta',
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};
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GrDiffGroup.prototype.addLine = function(line) {
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this.lines.push(line);
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var notDelta = (this.type === GrDiffGroup.Type.BOTH ||
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this.type === GrDiffGroup.Type.CONTEXT_CONTROL);
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if (notDelta && (line.type === GrDiffLine.Type.ADD ||
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line.type === GrDiffLine.Type.REMOVE)) {
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throw Error('Cannot add delta line to a non-delta group.');
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}
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if (line.type === GrDiffLine.Type.ADD) {
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this.adds.push(line);
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} else if (line.type === GrDiffLine.Type.REMOVE) {
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this.removes.push(line);
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}
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this._updateRange(line);
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};
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GrDiffGroup.prototype.getSideBySidePairs = function() {
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if (this.type === GrDiffGroup.Type.BOTH ||
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this.type === GrDiffGroup.Type.CONTEXT_CONTROL) {
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return this.lines.map(function(line) {
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return {
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left: line,
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right: line,
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};
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});
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}
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var pairs = [];
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var i = 0;
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var j = 0;
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while (i < this.removes.length || j < this.adds.length) {
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pairs.push({
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left: this.removes[i] || GrDiffLine.BLANK_LINE,
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right: this.adds[j] || GrDiffLine.BLANK_LINE,
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});
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i++;
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j++;
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}
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return pairs;
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};
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GrDiffGroup.prototype._updateRange = function(line) {
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if (line.beforeNumber === 'FILE' || line.afterNumber === 'FILE') { return; }
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if (line.type === GrDiffLine.Type.ADD ||
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line.type === GrDiffLine.Type.BOTH) {
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if (this.lineRange.right.start === null ||
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line.afterNumber < this.lineRange.right.start) {
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this.lineRange.right.start = line.afterNumber;
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}
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if (this.lineRange.right.end === null ||
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line.afterNumber > this.lineRange.right.end) {
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this.lineRange.right.end = line.afterNumber;
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}
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}
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if (line.type === GrDiffLine.Type.REMOVE ||
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line.type === GrDiffLine.Type.BOTH) {
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if (this.lineRange.left.start === null ||
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line.beforeNumber < this.lineRange.left.start) {
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this.lineRange.left.start = line.beforeNumber;
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}
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if (this.lineRange.left.end === null ||
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line.beforeNumber > this.lineRange.left.end) {
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this.lineRange.left.end = line.beforeNumber;
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}
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}
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};
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window.GrDiffGroup = GrDiffGroup;
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})(window, GrDiffLine);
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