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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const hash = require('hash-sum');
const cache = require('lru-cache')(100);
const { SourceMapGenerator } = require('source-map');
const splitRE = /\r?\n/g;
const emptyRE = /^(?:\/\/)?\s*$/;
function parse(options) {
const { source, filename = '', compiler, compilerParseOptions = { pad: 'line' }, sourceRoot = process.cwd(), needMap = true } = options;
const cacheKey = hash(filename + source);
let output = cache.get(cacheKey);
if (output)
return output;
output = compiler.parseComponent(source, compilerParseOptions);
if (needMap) {
if (output.script && !output.script.src) {
output.script.map = generateSourceMap(filename, source, output.script.content, sourceRoot);
}
if (output.styles) {
output.styles.forEach(style => {
if (!style.src) {
style.map = generateSourceMap(filename, source, style.content, sourceRoot);
}
});
}
}
cache.set(cacheKey, output);
return output;
}
exports.parse = parse;
function generateSourceMap(filename, source, generated, sourceRoot) {
const map = new SourceMapGenerator({
file: filename,
sourceRoot
});
map.setSourceContent(filename, source);
generated.split(splitRE).forEach((line, index) => {
if (!emptyRE.test(line)) {
map.addMapping({
source: filename,
original: {
line: index + 1,
column: 0
},
generated: {
line: index + 1,
column: 0
}
});
}
});
return map.toJSON();
}
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