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utf8mb4
Commit Description:
utf8mb4
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node_modules/falafel/index.js
| 83 lines
| 2.3 KiB
| application/javascript
| JavascriptLexer
|
| r789 | var acorn = require('acorn'); | |||
| var isArray = require('isarray'); | ||||
| var objectKeys = require('object-keys'); | ||||
| var forEach = require('foreach'); | ||||
| var util = require('util'); | ||||
| module.exports = function (src, opts, fn) { | ||||
| if (typeof opts === 'function') { | ||||
| fn = opts; | ||||
| opts = {}; | ||||
| } | ||||
| if (src && typeof src === 'object' && src.constructor.name === 'Buffer') { | ||||
| src = src.toString(); | ||||
| } | ||||
| else if (src && typeof src === 'object') { | ||||
| opts = src; | ||||
| src = opts.source; | ||||
| delete opts.source; | ||||
| } | ||||
| src = src === undefined ? opts.source : src; | ||||
| if (typeof src !== 'string') src = String(src); | ||||
| var parser = opts.parser || acorn; | ||||
| var ast = parser.parse(src, opts); | ||||
| var result = { | ||||
| chunks : src.split(''), | ||||
| toString : function () { return result.chunks.join('') }, | ||||
| inspect : function () { return result.toString() } | ||||
| }; | ||||
| if (util.inspect.custom) { | ||||
| result[util.inspect.custom] = result.toString; | ||||
| } | ||||
| var index = 0; | ||||
| (function walk (node, parent) { | ||||
| insertHelpers(node, parent, result.chunks); | ||||
| forEach(objectKeys(node), function (key) { | ||||
| if (key === 'parent') return; | ||||
| var child = node[key]; | ||||
| if (isArray(child)) { | ||||
| forEach(child, function (c) { | ||||
| if (c && typeof c.type === 'string') { | ||||
| walk(c, node); | ||||
| } | ||||
| }); | ||||
| } | ||||
| else if (child && typeof child.type === 'string') { | ||||
| walk(child, node); | ||||
| } | ||||
| }); | ||||
| fn(node); | ||||
| })(ast, undefined); | ||||
| return result; | ||||
| }; | ||||
| function insertHelpers (node, parent, chunks) { | ||||
| node.parent = parent; | ||||
| node.source = function () { | ||||
| return chunks.slice(node.start, node.end).join(''); | ||||
| }; | ||||
| if (node.update && typeof node.update === 'object') { | ||||
| var prev = node.update; | ||||
| forEach(objectKeys(prev), function (key) { | ||||
| update[key] = prev[key]; | ||||
| }); | ||||
| node.update = update; | ||||
| } | ||||
| else { | ||||
| node.update = update; | ||||
| } | ||||
| function update (s) { | ||||
| chunks[node.start] = s; | ||||
| for (var i = node.start + 1; i < node.end; i++) { | ||||
| chunks[i] = ''; | ||||
| } | ||||
| } | ||||
| } | ||||