53 lines
1.7 KiB
JavaScript
53 lines
1.7 KiB
JavaScript
'use strict';
|
|
|
|
/**
|
|
* This module contains several helper Functions to build Changesets
|
|
* based on a SkipList
|
|
*/
|
|
|
|
/**
|
|
* Copyright 2009 Google Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS-IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
exports.buildRemoveRange = (rep, builder, start, end) => {
|
|
const startLineOffset = rep.lines.offsetOfIndex(start[0]);
|
|
const endLineOffset = rep.lines.offsetOfIndex(end[0]);
|
|
|
|
if (end[0] > start[0]) {
|
|
builder.remove(endLineOffset - startLineOffset - start[1], end[0] - start[0]);
|
|
builder.remove(end[1]);
|
|
} else {
|
|
builder.remove(end[1] - start[1]);
|
|
}
|
|
};
|
|
|
|
exports.buildKeepRange = (rep, builder, start, end, attribs, pool) => {
|
|
const startLineOffset = rep.lines.offsetOfIndex(start[0]);
|
|
const endLineOffset = rep.lines.offsetOfIndex(end[0]);
|
|
|
|
if (end[0] > start[0]) {
|
|
builder.keep(endLineOffset - startLineOffset - start[1], end[0] - start[0], attribs, pool);
|
|
builder.keep(end[1], 0, attribs, pool);
|
|
} else {
|
|
builder.keep(end[1] - start[1], 0, attribs, pool);
|
|
}
|
|
};
|
|
|
|
exports.buildKeepToStartOfRange = (rep, builder, start) => {
|
|
const startLineOffset = rep.lines.offsetOfIndex(start[0]);
|
|
|
|
builder.keep(startLineOffset, start[0]);
|
|
builder.keep(start[1]);
|
|
};
|