97 lines
2.2 KiB
JavaScript
97 lines
2.2 KiB
JavaScript
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var SourceMapGenerator = require('source-map').SourceMapGenerator;
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var all = require('./helpers').all;
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var isWindows = process.platform == 'win32';
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var unknownSource = '$stdin';
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function store(element, context) {
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var fromString = typeof element == 'string';
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var value = fromString ? element : element[0];
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if (value.indexOf('_') > -1)
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value = context.restore(value, prefixContentFrom(context.output));
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track(value, fromString ? null : element, context);
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context.output.push(value);
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}
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function prefixContentFrom(values) {
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var content = [];
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for (var i = values.length - 1; i >= 0; i--) {
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var value = values[i];
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content.unshift(value);
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if (value == '{' || value == ';')
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break;
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}
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return content.join('');
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}
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function track(value, element, context) {
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if (element)
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trackAllMappings(element, context);
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var parts = value.split('\n');
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context.line += parts.length - 1;
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context.column = parts.length > 1 ? 0 : (context.column + parts.pop().length);
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}
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function trackAllMappings(element, context) {
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var mapping = element[element.length - 1];
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if (!Array.isArray(mapping))
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return;
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for (var i = 0, l = mapping.length; i < l; i++) {
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trackMapping(mapping[i], context);
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}
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}
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function trackMapping(mapping, context) {
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var source = mapping[2] || unknownSource;
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if (isWindows)
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source = source.replace(/\\/g, '/');
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context.outputMap.addMapping({
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generated: {
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line: context.line,
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column: context.column
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},
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source: source,
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original: {
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line: mapping[0],
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column: mapping[1]
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}
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});
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if (mapping[3])
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context.outputMap.setSourceContent(source, mapping[3][mapping[2]]);
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}
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function stringify(tokens, options, restoreCallback, inputMapTracker) {
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var context = {
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column: 0,
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inputMapTracker: inputMapTracker,
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keepBreaks: options.keepBreaks,
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line: 1,
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output: [],
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outputMap: new SourceMapGenerator(),
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restore: restoreCallback,
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sourceMapInlineSources: options.sourceMapInlineSources,
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spaceAfterClosingBrace: options.compatibility.properties.spaceAfterClosingBrace,
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store: store
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};
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all(tokens, context, false);
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return {
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sourceMap: context.outputMap,
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styles: context.output.join('').trim()
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};
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}
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module.exports = stringify;
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