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239 lines
7.3 KiB
239 lines
7.3 KiB
var hasMap = typeof Map === 'function' && Map.prototype; |
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var mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null; |
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var mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null; |
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var mapForEach = hasMap && Map.prototype.forEach; |
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var hasSet = typeof Set === 'function' && Set.prototype; |
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var setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null; |
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var setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null; |
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var setForEach = hasSet && Set.prototype.forEach; |
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var booleanValueOf = Boolean.prototype.valueOf; |
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var objectToString = Object.prototype.toString; |
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var inspectCustom = require('./util.inspect').custom; |
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var inspectSymbol = (inspectCustom && isSymbol(inspectCustom)) ? inspectCustom : null; |
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module.exports = function inspect_ (obj, opts, depth, seen) { |
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if (typeof obj === 'undefined') { |
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return 'undefined'; |
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} |
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if (obj === null) { |
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return 'null'; |
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} |
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if (typeof obj === 'boolean') { |
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return obj ? 'true' : 'false'; |
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} |
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if (typeof obj === 'string') { |
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return inspectString(obj); |
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} |
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if (typeof obj === 'number') { |
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if (obj === 0) { |
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return Infinity / obj > 0 ? '0' : '-0'; |
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} |
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return String(obj); |
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} |
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if (!opts) opts = {}; |
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var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth; |
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if (typeof depth === 'undefined') depth = 0; |
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if (depth >= maxDepth && maxDepth > 0 && typeof obj === 'object') { |
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return '[Object]'; |
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} |
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if (typeof seen === 'undefined') seen = []; |
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else if (indexOf(seen, obj) >= 0) { |
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return '[Circular]'; |
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} |
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function inspect (value, from) { |
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if (from) { |
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seen = seen.slice(); |
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seen.push(from); |
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} |
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return inspect_(value, opts, depth + 1, seen); |
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} |
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if (typeof obj === 'function') { |
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var name = nameOf(obj); |
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return '[Function' + (name ? ': ' + name : '') + ']'; |
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} |
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if (isSymbol(obj)) { |
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var symString = Symbol.prototype.toString.call(obj); |
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return typeof obj === 'object' ? markBoxed(symString) : symString; |
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} |
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if (isElement(obj)) { |
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var s = '<' + String(obj.nodeName).toLowerCase(); |
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var attrs = obj.attributes || []; |
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for (var i = 0; i < attrs.length; i++) { |
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s += ' ' + attrs[i].name + '="' + quote(attrs[i].value) + '"'; |
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} |
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s += '>'; |
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if (obj.childNodes && obj.childNodes.length) s += '...'; |
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s += '</' + String(obj.nodeName).toLowerCase() + '>'; |
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return s; |
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} |
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if (isArray(obj)) { |
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if (obj.length === 0) return '[]'; |
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return '[ ' + arrObjKeys(obj, inspect).join(', ') + ' ]'; |
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} |
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if (isError(obj)) { |
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var parts = arrObjKeys(obj, inspect); |
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if (parts.length === 0) return '[' + String(obj) + ']'; |
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return '{ [' + String(obj) + '] ' + parts.join(', ') + ' }'; |
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} |
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if (typeof obj === 'object') { |
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if (inspectSymbol && typeof obj[inspectSymbol] === 'function') { |
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return obj[inspectSymbol](); |
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} else if (typeof obj.inspect === 'function') { |
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return obj.inspect(); |
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} |
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} |
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if (isMap(obj)) { |
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var parts = []; |
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mapForEach.call(obj, function (value, key) { |
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parts.push(inspect(key, obj) + ' => ' + inspect(value, obj)); |
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}); |
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return collectionOf('Map', mapSize.call(obj), parts); |
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} |
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if (isSet(obj)) { |
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var parts = []; |
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setForEach.call(obj, function (value ) { |
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parts.push(inspect(value, obj)); |
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}); |
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return collectionOf('Set', setSize.call(obj), parts); |
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} |
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if (isNumber(obj)) { |
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return markBoxed(inspect(Number(obj))); |
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} |
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if (isBoolean(obj)) { |
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return markBoxed(booleanValueOf.call(obj)); |
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} |
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if (isString(obj)) { |
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return markBoxed(inspect(String(obj))); |
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} |
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if (!isDate(obj) && !isRegExp(obj)) { |
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var xs = arrObjKeys(obj, inspect); |
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if (xs.length === 0) return '{}'; |
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return '{ ' + xs.join(', ') + ' }'; |
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} |
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return String(obj); |
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}; |
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function quote (s) { |
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return String(s).replace(/"/g, '"'); |
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} |
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function isArray (obj) { return toStr(obj) === '[object Array]' } |
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function isDate (obj) { return toStr(obj) === '[object Date]' } |
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function isRegExp (obj) { return toStr(obj) === '[object RegExp]' } |
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function isError (obj) { return toStr(obj) === '[object Error]' } |
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function isSymbol (obj) { return toStr(obj) === '[object Symbol]' } |
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function isString (obj) { return toStr(obj) === '[object String]' } |
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function isNumber (obj) { return toStr(obj) === '[object Number]' } |
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function isBoolean (obj) { return toStr(obj) === '[object Boolean]' } |
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var hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; }; |
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function has (obj, key) { |
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return hasOwn.call(obj, key); |
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} |
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function toStr (obj) { |
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return objectToString.call(obj); |
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} |
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function nameOf (f) { |
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if (f.name) return f.name; |
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var m = String(f).match(/^function\s*([\w$]+)/); |
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if (m) return m[1]; |
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} |
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function indexOf (xs, x) { |
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if (xs.indexOf) return xs.indexOf(x); |
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for (var i = 0, l = xs.length; i < l; i++) { |
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if (xs[i] === x) return i; |
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} |
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return -1; |
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} |
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function isMap (x) { |
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if (!mapSize) { |
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return false; |
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} |
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try { |
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mapSize.call(x); |
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try { |
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setSize.call(x); |
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} catch (s) { |
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return true; |
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} |
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return x instanceof Map; // core-js workaround, pre-v2.5.0 |
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} catch (e) {} |
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return false; |
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} |
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function isSet (x) { |
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if (!setSize) { |
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return false; |
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} |
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try { |
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setSize.call(x); |
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try { |
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mapSize.call(x); |
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} catch (m) { |
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return true; |
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} |
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return x instanceof Set; // core-js workaround, pre-v2.5.0 |
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} catch (e) {} |
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return false; |
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} |
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function isElement (x) { |
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if (!x || typeof x !== 'object') return false; |
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if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) { |
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return true; |
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} |
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return typeof x.nodeName === 'string' |
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&& typeof x.getAttribute === 'function' |
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; |
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} |
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function inspectString (str) { |
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var s = str.replace(/(['\\])/g, '\\$1').replace(/[\x00-\x1f]/g, lowbyte); |
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return "'" + s + "'"; |
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} |
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function lowbyte (c) { |
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var n = c.charCodeAt(0); |
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var x = { 8: 'b', 9: 't', 10: 'n', 12: 'f', 13: 'r' }[n]; |
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if (x) return '\\' + x; |
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return '\\x' + (n < 0x10 ? '0' : '') + n.toString(16); |
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} |
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function markBoxed (str) { |
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return 'Object(' + str + ')'; |
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} |
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function collectionOf (type, size, entries) { |
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return type + ' (' + size + ') {' + entries.join(', ') + '}'; |
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} |
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function arrObjKeys (obj, inspect) { |
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var isArr = isArray(obj); |
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var xs = []; |
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if (isArr) { |
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xs.length = obj.length; |
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for (var i = 0; i < obj.length; i++) { |
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xs[i] = has(obj, i) ? inspect(obj[i], obj) : ''; |
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} |
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} |
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for (var key in obj) { |
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if (!has(obj, key)) continue; |
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if (isArr && String(Number(key)) === key && key < obj.length) continue; |
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if (/[^\w$]/.test(key)) { |
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xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj)); |
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} else { |
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xs.push(key + ': ' + inspect(obj[key], obj)); |
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} |
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} |
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return xs; |
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}
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