63 lines
1.4 KiB
JavaScript
63 lines
1.4 KiB
JavaScript
'use strict';
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const compile = (cst, options = {}) => {
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const keepProtected = options.safe === true || options.keepProtected === true;
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let firstSeen = false;
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const walk = (node, parent) => {
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let output = '';
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let inner;
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let lines;
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for (const child of node.nodes) {
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switch (child.type) {
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case 'block':
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if (options.first && firstSeen === true) {
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output += walk(child, node);
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break;
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}
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if (options.preserveNewlines === true) {
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inner = walk(child, node);
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lines = inner.split('\n');
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output += '\n'.repeat(lines.length - 1);
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break;
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}
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if (keepProtected === true && child.protected === true) {
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output += walk(child, node);
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break;
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}
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firstSeen = true;
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break;
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case 'line':
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if (options.first && firstSeen === true) {
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output += child.value;
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break;
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}
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if (keepProtected === true && child.protected === true) {
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output += child.value;
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}
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firstSeen = true;
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break;
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case 'open':
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case 'close':
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case 'text':
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case 'newline':
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default: {
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output += child.value || '';
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break;
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}
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}
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}
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return output;
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};
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return walk(cst);
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};
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module.exports = compile;
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