08-27-周三_17-09-29
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261
node_modules/jsonify/lib/parse.js
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261
node_modules/jsonify/lib/parse.js
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'use strict';
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var at; // The index of the current character
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var ch; // The current character
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var escapee = {
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'"': '"',
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'\\': '\\',
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'/': '/',
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b: '\b',
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f: '\f',
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n: '\n',
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r: '\r',
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t: '\t'
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};
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var text;
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// Call error when something is wrong.
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function error(m) {
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throw {
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name: 'SyntaxError',
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message: m,
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at: at,
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text: text
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};
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}
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function next(c) {
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// If a c parameter is provided, verify that it matches the current character.
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if (c && c !== ch) {
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error("Expected '" + c + "' instead of '" + ch + "'");
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}
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// Get the next character. When there are no more characters, return the empty string.
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ch = text.charAt(at);
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at += 1;
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return ch;
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}
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function number() {
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// Parse a number value.
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var num;
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var str = '';
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if (ch === '-') {
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str = '-';
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next('-');
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}
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while (ch >= '0' && ch <= '9') {
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str += ch;
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next();
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}
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if (ch === '.') {
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str += '.';
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while (next() && ch >= '0' && ch <= '9') {
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str += ch;
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}
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}
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if (ch === 'e' || ch === 'E') {
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str += ch;
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next();
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if (ch === '-' || ch === '+') {
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str += ch;
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next();
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}
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while (ch >= '0' && ch <= '9') {
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str += ch;
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next();
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}
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}
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num = Number(str);
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if (!isFinite(num)) {
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error('Bad number');
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}
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return num;
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}
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function string() {
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// Parse a string value.
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var hex;
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var i;
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var str = '';
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var uffff;
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// When parsing for string values, we must look for " and \ characters.
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if (ch === '"') {
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while (next()) {
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if (ch === '"') {
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next();
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return str;
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} else if (ch === '\\') {
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next();
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if (ch === 'u') {
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uffff = 0;
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for (i = 0; i < 4; i += 1) {
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hex = parseInt(next(), 16);
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if (!isFinite(hex)) {
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break;
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}
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uffff = (uffff * 16) + hex;
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}
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str += String.fromCharCode(uffff);
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} else if (typeof escapee[ch] === 'string') {
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str += escapee[ch];
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} else {
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break;
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}
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} else {
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str += ch;
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}
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}
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}
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error('Bad string');
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}
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// Skip whitespace.
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function white() {
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while (ch && ch <= ' ') {
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next();
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}
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}
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// true, false, or null.
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function word() {
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switch (ch) {
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case 't':
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next('t');
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next('r');
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next('u');
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next('e');
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return true;
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case 'f':
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next('f');
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next('a');
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next('l');
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next('s');
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next('e');
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return false;
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case 'n':
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next('n');
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next('u');
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next('l');
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next('l');
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return null;
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default:
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error("Unexpected '" + ch + "'");
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}
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}
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// Parse an array value.
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function array() {
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var arr = [];
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if (ch === '[') {
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next('[');
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white();
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if (ch === ']') {
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next(']');
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return arr; // empty array
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}
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while (ch) {
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arr.push(value()); // eslint-disable-line no-use-before-define
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white();
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if (ch === ']') {
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next(']');
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return arr;
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}
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next(',');
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white();
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}
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}
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error('Bad array');
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}
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// Parse an object value.
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function object() {
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var key;
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var obj = {};
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if (ch === '{') {
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next('{');
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white();
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if (ch === '}') {
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next('}');
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return obj; // empty object
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}
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while (ch) {
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key = string();
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white();
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next(':');
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if (Object.prototype.hasOwnProperty.call(obj, key)) {
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error('Duplicate key "' + key + '"');
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}
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obj[key] = value(); // eslint-disable-line no-use-before-define
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white();
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if (ch === '}') {
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next('}');
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return obj;
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}
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next(',');
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white();
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}
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}
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error('Bad object');
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}
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// Parse a JSON value. It could be an object, an array, a string, a number, or a word.
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function value() {
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white();
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switch (ch) {
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case '{':
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return object();
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case '[':
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return array();
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case '"':
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return string();
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case '-':
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return number();
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default:
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return ch >= '0' && ch <= '9' ? number() : word();
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}
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}
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// Return the json_parse function. It will have access to all of the above functions and variables.
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module.exports = function (source, reviver) {
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var result;
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text = source;
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at = 0;
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ch = ' ';
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result = value();
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white();
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if (ch) {
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error('Syntax error');
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}
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// If there is a reviver function, we recursively walk the new structure,
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// passing each name/value pair to the reviver function for possible
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// transformation, starting with a temporary root object that holds the result
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// in an empty key. If there is not a reviver function, we simply return the
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// result.
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return typeof reviver === 'function' ? (function walk(holder, key) {
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var k;
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var v;
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var val = holder[key];
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if (val && typeof val === 'object') {
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for (k in value) {
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if (Object.prototype.hasOwnProperty.call(val, k)) {
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v = walk(val, k);
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if (typeof v === 'undefined') {
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delete val[k];
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} else {
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val[k] = v;
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}
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}
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}
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}
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return reviver.call(holder, key, val);
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}({ '': result }, '')) : result;
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};
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151
node_modules/jsonify/lib/stringify.js
generated
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Normal file
151
node_modules/jsonify/lib/stringify.js
generated
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@@ -0,0 +1,151 @@
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'use strict';
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var escapable = /[\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
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var gap;
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var indent;
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var meta = { // table of character substitutions
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'\b': '\\b',
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'\t': '\\t',
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'\n': '\\n',
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'\f': '\\f',
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'\r': '\\r',
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'"': '\\"',
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'\\': '\\\\'
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};
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var rep;
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function quote(string) {
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// If the string contains no control characters, no quote characters, and no
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// backslash characters, then we can safely slap some quotes around it.
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// Otherwise we must also replace the offending characters with safe escape sequences.
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escapable.lastIndex = 0;
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return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
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var c = meta[a];
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return typeof c === 'string' ? c
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: '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
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}) + '"' : '"' + string + '"';
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}
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function str(key, holder) {
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// Produce a string from holder[key].
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var i; // The loop counter.
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var k; // The member key.
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var v; // The member value.
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var length;
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var mind = gap;
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var partial;
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var value = holder[key];
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// If the value has a toJSON method, call it to obtain a replacement value.
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if (value && typeof value === 'object' && typeof value.toJSON === 'function') {
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value = value.toJSON(key);
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}
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// If we were called with a replacer function, then call the replacer to obtain a replacement value.
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if (typeof rep === 'function') {
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value = rep.call(holder, key, value);
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}
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// What happens next depends on the value's type.
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switch (typeof value) {
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case 'string':
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return quote(value);
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case 'number':
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// JSON numbers must be finite. Encode non-finite numbers as null.
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return isFinite(value) ? String(value) : 'null';
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case 'boolean':
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case 'null':
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// If the value is a boolean or null, convert it to a string. Note:
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// typeof null does not produce 'null'. The case is included here in
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// the remote chance that this gets fixed someday.
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return String(value);
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case 'object':
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if (!value) {
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return 'null';
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}
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gap += indent;
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partial = [];
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// Array.isArray
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if (Object.prototype.toString.apply(value) === '[object Array]') {
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length = value.length;
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for (i = 0; i < length; i += 1) {
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partial[i] = str(i, value) || 'null';
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}
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// Join all of the elements together, separated with commas, and wrap them in brackets.
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v = partial.length === 0 ? '[]' : gap
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? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
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: '[' + partial.join(',') + ']';
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gap = mind;
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return v;
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}
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// If the replacer is an array, use it to select the members to be stringified.
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if (rep && typeof rep === 'object') {
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length = rep.length;
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for (i = 0; i < length; i += 1) {
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k = rep[i];
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if (typeof k === 'string') {
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v = str(k, value);
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if (v) {
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partial.push(quote(k) + (gap ? ': ' : ':') + v);
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}
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}
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}
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} else {
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// Otherwise, iterate through all of the keys in the object.
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for (k in value) {
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if (Object.prototype.hasOwnProperty.call(value, k)) {
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v = str(k, value);
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if (v) {
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partial.push(quote(k) + (gap ? ': ' : ':') + v);
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}
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}
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}
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}
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// Join all of the member texts together, separated with commas, and wrap them in braces.
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v = partial.length === 0 ? '{}' : gap
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? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
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: '{' + partial.join(',') + '}';
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gap = mind;
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return v;
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default:
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}
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}
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module.exports = function (value, replacer, space) {
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var i;
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gap = '';
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indent = '';
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// If the space parameter is a number, make an indent string containing that many spaces.
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if (typeof space === 'number') {
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for (i = 0; i < space; i += 1) {
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indent += ' ';
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}
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} else if (typeof space === 'string') {
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// If the space parameter is a string, it will be used as the indent string.
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indent = space;
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}
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// If there is a replacer, it must be a function or an array. Otherwise, throw an error.
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rep = replacer;
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if (
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replacer
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&& typeof replacer !== 'function'
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&& (typeof replacer !== 'object' || typeof replacer.length !== 'number')
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) {
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throw new Error('JSON.stringify');
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}
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// Make a fake root object containing our value under the key of ''.
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// Return the result of stringifying the value.
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return str('', { '': value });
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};
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