c15af086fd
Currently when UglifyJS compresses a given input file that comes with a source-map, but the source-map does not have mappings for all code parts in the input file. e.g. the input file has been generated and some specific code-parts have been generated and are not originating from any source-file. In that case if mappings before the "generated code" are collected, and the original file location for the "generated code" is determined after previous mappings for the same line have been recorded, UglifyJS just ignores the fact that there is no original location and the previous segment is not terminated. This causes the "generated code" incorrectly to be mapped to the previous segment/ original source location.
117 lines
4.3 KiB
JavaScript
117 lines
4.3 KiB
JavaScript
/***********************************************************************
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A JavaScript tokenizer / parser / beautifier / compressor.
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https://github.com/mishoo/UglifyJS2
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-------------------------------- (C) ---------------------------------
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Author: Mihai Bazon
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<mihai.bazon@gmail.com>
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http://mihai.bazon.net/blog
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Distributed under the BSD license:
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Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the following
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disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials
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provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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***********************************************************************/
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"use strict";
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// a small wrapper around fitzgen's source-map library
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function SourceMap(options) {
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options = defaults(options, {
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file: null,
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root: null,
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orig: null,
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orig_line_diff: 0,
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dest_line_diff: 0,
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}, true);
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var generator = new MOZ_SourceMap.SourceMapGenerator({
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file: options.file,
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sourceRoot: options.root
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});
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var maps = options.orig && Object.create(null);
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if (maps) for (var source in options.orig) {
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var map = new MOZ_SourceMap.SourceMapConsumer(options.orig[source]);
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if (Array.isArray(options.orig[source].sources)) {
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map._sources.toArray().forEach(function(source) {
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var sourceContent = map.sourceContentFor(source, true);
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if (sourceContent) generator.setSourceContent(source, sourceContent);
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});
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}
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maps[source] = map;
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}
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return {
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add: function(source, gen_line, gen_col, orig_line, orig_col, name) {
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var map = maps && maps[source];
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var generatedPos = {
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line: gen_line + options.dest_line_diff,
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column: gen_col
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};
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if (map) {
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var info = map.originalPositionFor({
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line: orig_line,
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column: orig_col
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});
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if (info.source === null) {
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if (generatedPos.column !== 0) {
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generator.
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generator.addMapping({
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generated: generatedPos,
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original: null,
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source: null,
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name: null
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});
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}
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return;
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}
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source = info.source;
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orig_line = info.line;
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orig_col = info.column;
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name = info.name || name;
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}
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generator.addMapping({
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name: name,
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source: source,
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generated: generatedPos,
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original: {
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line: orig_line + options.orig_line_diff,
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column: orig_col
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}
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});
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},
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get: function() {
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return generator;
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},
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toString: function() {
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return JSON.stringify(generator.toJSON());
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}
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};
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}
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