1var SourceMapGenerator = require('source-map').SourceMapGenerator;
2var all = require('./helpers').all;
3
4var isRemoteResource = require('../utils/is-remote-resource');
5
6var isWindows = process.platform == 'win32';
7
8var NIX_SEPARATOR_PATTERN = /\//g;
9var UNKNOWN_SOURCE = '$stdin';
10var WINDOWS_SEPARATOR = '\\';
11
12function store(serializeContext, element) {
13  var fromString = typeof element == 'string';
14  var value = fromString ? element : element[1];
15  var mappings = fromString ? null : element[2];
16  var wrap = serializeContext.wrap;
17
18  wrap(serializeContext, value);
19  track(serializeContext, value, mappings);
20  serializeContext.output.push(value);
21}
22
23function wrap(serializeContext, value) {
24  if (serializeContext.column + value.length > serializeContext.format.wrapAt) {
25    track(serializeContext, serializeContext.format.breakWith, false);
26    serializeContext.output.push(serializeContext.format.breakWith);
27  }
28}
29
30function track(serializeContext, value, mappings) {
31  var parts = value.split('\n');
32
33  if (mappings) {
34    trackAllMappings(serializeContext, mappings);
35  }
36
37  serializeContext.line += parts.length - 1;
38  serializeContext.column = parts.length > 1 ? 0 : (serializeContext.column + parts.pop().length);
39}
40
41function trackAllMappings(serializeContext, mappings) {
42  for (var i = 0, l = mappings.length; i < l; i++) {
43    trackMapping(serializeContext, mappings[i]);
44  }
45}
46
47function trackMapping(serializeContext, mapping) {
48  var line = mapping[0];
49  var column = mapping[1];
50  var originalSource = mapping[2];
51  var source = originalSource;
52  var storedSource = source || UNKNOWN_SOURCE;
53
54  if (isWindows && source && !isRemoteResource(source)) {
55    storedSource = source.replace(NIX_SEPARATOR_PATTERN, WINDOWS_SEPARATOR);
56  }
57
58  serializeContext.outputMap.addMapping({
59    generated: {
60      line: serializeContext.line,
61      column: serializeContext.column
62    },
63    source: storedSource,
64    original: {
65      line: line,
66      column: column
67    }
68  });
69
70  if (serializeContext.inlineSources && (originalSource in serializeContext.sourcesContent)) {
71    serializeContext.outputMap.setSourceContent(storedSource, serializeContext.sourcesContent[originalSource]);
72  }
73}
74
75function serializeStylesAndSourceMap(tokens, context) {
76  var serializeContext = {
77    column: 0,
78    format: context.options.format,
79    indentBy: 0,
80    indentWith: '',
81    inlineSources: context.options.sourceMapInlineSources,
82    line: 1,
83    output: [],
84    outputMap: new SourceMapGenerator(),
85    sourcesContent: context.sourcesContent,
86    spaceAfterClosingBrace: context.options.compatibility.properties.spaceAfterClosingBrace,
87    store: store,
88    wrap: context.options.format.wrapAt ?
89      wrap :
90      function () { /* noop */  }
91  };
92
93  all(serializeContext, tokens);
94
95  return {
96    sourceMap: serializeContext.outputMap,
97    styles: serializeContext.output.join('')
98  };
99}
100
101module.exports = serializeStylesAndSourceMap;
102