121 lines
12 KiB
JavaScript
121 lines
12 KiB
JavaScript
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'use strict';
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exports.__esModule = true;
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exports.default = preprocess;
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function indentError(input, l, p) {
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throw input.error('Mixed tabs and spaces are not allowed', l, p + 1);
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}
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function preprocess(input, lines) {
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var indentType = void 0;
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var prevNumber = 0;
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var parts = lines.map(function (line) {
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var lastComma = false;
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var comment = false;
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var number = prevNumber + 1;
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var atrule = false;
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var indent = '';
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var tokens = [];
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var colon = false;
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if (line.length > 0) {
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if (line[0][0] === 'space') {
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indent = line[0][1];
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tokens = line.slice(1);
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} else {
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indent = '';
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tokens = line;
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}
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if (!indentType && indent.length) {
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indentType = indent[0] === ' ' ? 'space' : 'tab';
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}
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if (indentType === 'space') {
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if (indent.indexOf('\t') !== -1) {
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indentError(input, number, indent.indexOf('\t'));
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}
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} else if (indentType === 'tab') {
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if (indent.indexOf(' ') !== -1) {
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indentError(input, number, indent.indexOf(' '));
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}
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}
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if (tokens.length) {
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for (var i = tokens.length - 1; i >= 0; i--) {
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var type = tokens[i][0];
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if (type === ',') {
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lastComma = true;
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break;
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} else if (type === 'space') {
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continue;
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} else if (type === 'comment') {
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continue;
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} else if (type === 'newline') {
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continue;
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} else {
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break;
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}
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}
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comment = tokens[0][0] === 'comment';
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atrule = tokens[0][0] === 'at-word';
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var brackets = 0;
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for (var _i = 0; _i < tokens.length - 1; _i++) {
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var _type = tokens[_i][0];
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var next = tokens[_i + 1][0];
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if (_type === '(') {
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brackets += 1;
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} else if (_type === ')') {
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brackets -= 1;
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} else if (_type === ':' && brackets === 0 && (next === 'space' || next === 'newline')) {
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colon = true;
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}
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}
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}
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var last = tokens[tokens.length - 1];
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if (last && last[0] === 'newline') prevNumber = last[2];
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}
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return {
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number: number,
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indent: indent,
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colon: colon,
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tokens: tokens,
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atrule: atrule,
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comment: comment,
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lastComma: lastComma,
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before: ''
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};
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});
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parts = parts.reduceRight(function (all, i) {
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if (!i.tokens.length || i.tokens.every(function (j) {
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return j[0] === 'newline';
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})) {
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var prev = all[0];
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var before = i.indent + i.tokens.map(function (j) {
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return j[1];
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}).join('');
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prev.before = before + prev.before;
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} else {
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all.unshift(i);
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}
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return all;
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}, [{ end: true, before: '' }]);
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parts.forEach(function (part, i) {
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if (i === 0) return;
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var prev = parts[i - 1];
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var last = prev.tokens[prev.tokens.length - 1];
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if (last && last[0] === 'newline') {
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part.before = last[1] + part.before;
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prev.tokens.pop();
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}
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});
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return parts;
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}
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module.exports = exports['default'];
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