mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-02-06 15:24:55 +08:00
spine-csharp now uses SharpJson
This commit is contained in:
pharan
parent
4c69881c2f
commit
777fb110e8
@ -1,533 +1,17 @@
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/*
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* Copyright (c) 2012 Calvin Rien
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*
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* Based on the JSON parser by Patrick van Bergen
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* http://techblog.procurios.nl/k/618/news/view/14605/14863/How-do-I-write-my-own-parser-for-JSON.html
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*
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* Simplified it so that it doesn't throw exceptions
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* and can be used in Unity iPhone with maximum code stripping.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using System.Globalization;
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namespace Spine {
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// Example usage:
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//
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// using UnityEngine;
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// using System.Collections;
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// using System.Collections.Generic;
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// using MiniJSON;
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//
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// public class MiniJSONTest : MonoBehaviour {
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// void Start () {
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// var jsonString = "{ \"array\": [1.44,2,3], " +
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// "\"object\": {\"key1\":\"value1\", \"key2\":256}, " +
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// "\"string\": \"The quick brown fox \\\"jumps\\\" over the lazy dog \", " +
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// "\"unicode\": \"\\u3041 Men\u00fa sesi\u00f3n\", " +
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// "\"int\": 65536, " +
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// "\"float\": 3.1415926, " +
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// "\"bool\": true, " +
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// "\"null\": null }";
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//
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// var dict = Json.Deserialize(jsonString) as Dictionary<string,object>;
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//
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// Debug.Log("deserialized: " + dict.GetType());
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// Debug.Log("dict['array'][0]: " + ((List<object>) dict["array"])[0]);
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// Debug.Log("dict['string']: " + (string) dict["string"]);
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// Debug.Log("dict['float']: " + (float) dict["float"]);
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// Debug.Log("dict['int']: " + (long) dict["int"]); // ints come out as longs
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// Debug.Log("dict['unicode']: " + (string) dict["unicode"]);
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//
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// var str = Json.Serialize(dict);
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//
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// Debug.Log("serialized: " + str);
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// }
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// }
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/// <summary>
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/// This class encodes and decodes JSON strings.
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/// Spec. details, see http://www.json.org/
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///
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/// JSON uses Arrays and Objects. These correspond here to the datatypes IList and IDictionary.
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/// All numbers are parsed to floats.
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/// </summary>
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public static class Json {
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/// <summary>
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/// Parses the string json into a value
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/// </summary>
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/// <param name="json">A JSON string.</param>
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/// <returns>An List<object>, a Dictionary<string, object>, a float, an integer,a string, null, true, or false</returns>
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public static object Deserialize (TextReader json) {
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if (json == null) {
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return null;
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}
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return Parser.Parse(json);
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static readonly SharpJson.JsonDecoder parser;
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static Json () {
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parser = new SharpJson.JsonDecoder();
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parser.parseNumbersAsFloat = true;
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}
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sealed class Parser : IDisposable {
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const string WHITE_SPACE = " \t\n\r";
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const string WORD_BREAK = " \t\n\r{}[],:\"";
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enum TOKEN {
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NONE,
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CURLY_OPEN,
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CURLY_CLOSE,
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SQUARED_OPEN,
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SQUARED_CLOSE,
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COLON,
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COMMA,
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STRING,
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NUMBER,
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TRUE,
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FALSE,
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NULL
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};
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TextReader json;
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Parser (TextReader reader) {
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json = reader;
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}
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public static object Parse (TextReader reader) {
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using (var instance = new Parser(reader)) {
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return instance.ParseValue();
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}
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}
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public void Dispose () {
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json.Dispose();
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json = null;
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}
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Dictionary<string, object> ParseObject () {
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Dictionary<string, object> table = new Dictionary<string, object>();
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// ditch opening brace
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json.Read();
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// {
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while (true) {
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switch (NextToken) {
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case TOKEN.NONE:
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return null;
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case TOKEN.COMMA:
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continue;
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case TOKEN.CURLY_CLOSE:
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return table;
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default:
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// name
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string name = ParseString();
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if (name == null) {
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return null;
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}
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// :
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if (NextToken != TOKEN.COLON) {
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return null;
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}
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// ditch the colon
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json.Read();
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// value
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table[name] = ParseValue();
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break;
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}
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}
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}
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List<object> ParseArray () {
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List<object> array = new List<object>();
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// ditch opening bracket
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json.Read();
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// [
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var parsing = true;
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while (parsing) {
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TOKEN nextToken = NextToken;
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switch (nextToken) {
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case TOKEN.NONE:
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return null;
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case TOKEN.COMMA:
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continue;
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case TOKEN.SQUARED_CLOSE:
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parsing = false;
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break;
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default:
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object value = ParseByToken(nextToken);
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array.Add(value);
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break;
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}
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}
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return array;
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}
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object ParseValue () {
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TOKEN nextToken = NextToken;
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return ParseByToken(nextToken);
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}
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object ParseByToken (TOKEN token) {
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switch (token) {
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case TOKEN.STRING:
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return ParseString();
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case TOKEN.NUMBER:
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return ParseNumber();
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case TOKEN.CURLY_OPEN:
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return ParseObject();
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case TOKEN.SQUARED_OPEN:
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return ParseArray();
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case TOKEN.TRUE:
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return true;
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case TOKEN.FALSE:
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return false;
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case TOKEN.NULL:
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return null;
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default:
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return null;
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}
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}
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string ParseString () {
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StringBuilder s = new StringBuilder();
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char c;
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// ditch opening quote
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json.Read();
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bool parsing = true;
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while (parsing) {
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if (json.Peek() == -1) {
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parsing = false;
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break;
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}
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c = NextChar;
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switch (c) {
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case '"':
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parsing = false;
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break;
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case '\\':
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if (json.Peek() == -1) {
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parsing = false;
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break;
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}
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c = NextChar;
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switch (c) {
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case '"':
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case '\\':
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case '/':
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s.Append(c);
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break;
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case 'b':
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s.Append('\b');
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break;
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case 'f':
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s.Append('\f');
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break;
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case 'n':
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s.Append('\n');
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break;
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case 'r':
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s.Append('\r');
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break;
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case 't':
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s.Append('\t');
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break;
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case 'u':
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var hex = new StringBuilder();
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for (int i = 0; i < 4; i++) {
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hex.Append(NextChar);
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}
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s.Append((char)Convert.ToInt32(hex.ToString(), 16));
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break;
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}
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break;
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default:
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s.Append(c);
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break;
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}
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}
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return s.ToString();
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}
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object ParseNumber () {
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string number = NextWord;
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float parsedFloat;
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float.TryParse(number, NumberStyles.Float, CultureInfo.InvariantCulture, out parsedFloat);
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return parsedFloat;
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}
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void EatWhitespace () {
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while (WHITE_SPACE.IndexOf(PeekChar) != -1) {
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json.Read();
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if (json.Peek() == -1) {
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break;
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}
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}
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}
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char PeekChar {
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get {
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return Convert.ToChar(json.Peek());
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}
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}
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char NextChar {
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get {
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return Convert.ToChar(json.Read());
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}
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}
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string NextWord {
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get {
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StringBuilder word = new StringBuilder();
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while (WORD_BREAK.IndexOf(PeekChar) == -1) {
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word.Append(NextChar);
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if (json.Peek() == -1) {
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break;
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}
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}
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return word.ToString();
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}
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}
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TOKEN NextToken {
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get {
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EatWhitespace();
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if (json.Peek() == -1) {
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return TOKEN.NONE;
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}
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char c = PeekChar;
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switch (c) {
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case '{':
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return TOKEN.CURLY_OPEN;
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case '}':
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json.Read();
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return TOKEN.CURLY_CLOSE;
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case '[':
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return TOKEN.SQUARED_OPEN;
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case ']':
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json.Read();
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return TOKEN.SQUARED_CLOSE;
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case ',':
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json.Read();
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return TOKEN.COMMA;
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case '"':
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return TOKEN.STRING;
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case ':':
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return TOKEN.COLON;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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case '-':
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return TOKEN.NUMBER;
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}
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string word = NextWord;
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switch (word) {
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case "false":
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return TOKEN.FALSE;
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case "true":
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return TOKEN.TRUE;
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case "null":
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return TOKEN.NULL;
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}
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return TOKEN.NONE;
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}
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}
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}
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/// <summary>
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/// Converts a IDictionary / IList object or a simple type (string, int, etc.) into a JSON string
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/// </summary>
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/// <param name="json">A Dictionary<string, object> / List<object></param>
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/// <returns>A JSON encoded string, or null if object 'json' is not serializable</returns>
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public static string Serialize (object obj) {
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return Serializer.Serialize(obj);
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}
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sealed class Serializer {
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StringBuilder builder;
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Serializer () {
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builder = new StringBuilder();
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}
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public static string Serialize (object obj) {
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var instance = new Serializer();
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instance.SerializeValue(obj);
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return instance.builder.ToString();
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}
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void SerializeValue (object value) {
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IList asList;
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IDictionary asDict;
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string asStr;
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if (value == null) {
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builder.Append("null");
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} else if ((asStr = value as string) != null) {
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SerializeString(asStr);
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} else if (value is bool) {
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builder.Append(value.ToString().ToLower());
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} else if ((asList = value as IList) != null) {
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SerializeArray(asList);
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} else if ((asDict = value as IDictionary) != null) {
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SerializeObject(asDict);
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} else if (value is char) {
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SerializeString(value.ToString());
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} else {
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SerializeOther(value);
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}
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}
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void SerializeObject (IDictionary obj) {
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bool first = true;
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builder.Append('{');
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foreach (object e in obj.Keys) {
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if (!first) {
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builder.Append(',');
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}
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SerializeString(e.ToString());
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builder.Append(':');
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SerializeValue(obj[e]);
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first = false;
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}
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builder.Append('}');
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}
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void SerializeArray (IList anArray) {
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builder.Append('[');
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bool first = true;
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foreach (object obj in anArray) {
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if (!first) {
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builder.Append(',');
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}
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SerializeValue(obj);
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first = false;
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}
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builder.Append(']');
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}
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void SerializeString (string str) {
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builder.Append('\"');
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char[] charArray = str.ToCharArray();
|
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foreach (var c in charArray) {
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switch (c) {
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case '"':
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builder.Append("\\\"");
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break;
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case '\\':
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builder.Append("\\\\");
|
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break;
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case '\b':
|
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builder.Append("\\b");
|
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break;
|
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case '\f':
|
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builder.Append("\\f");
|
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break;
|
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case '\n':
|
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builder.Append("\\n");
|
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break;
|
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case '\r':
|
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builder.Append("\\r");
|
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break;
|
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case '\t':
|
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builder.Append("\\t");
|
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break;
|
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default:
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int codepoint = Convert.ToInt32(c);
|
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if ((codepoint >= 32) && (codepoint <= 126)) {
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builder.Append(c);
|
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} else {
|
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builder.Append("\\u" + Convert.ToString(codepoint, 16).PadLeft(4, '0'));
|
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}
|
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break;
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}
|
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}
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builder.Append('\"');
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}
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void SerializeOther (object value) {
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if (value is float
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|| value is int
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|| value is uint
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|| value is long
|
||||
|| value is float
|
||||
|| value is sbyte
|
||||
|| value is byte
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|| value is short
|
||||
|| value is ushort
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||||
|| value is ulong
|
||||
|| value is decimal) {
|
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builder.Append(value.ToString());
|
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} else {
|
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SerializeString(value.ToString());
|
||||
}
|
||||
}
|
||||
public static object Deserialize (TextReader text) {
|
||||
return parser.Decode(text.ReadToEnd());
|
||||
}
|
||||
}
|
||||
}
|
||||
495
spine-csharp/src/SharpJson.cs
Normal file
495
spine-csharp/src/SharpJson.cs
Normal file
@ -0,0 +1,495 @@
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/**
|
||||
*
|
||||
* Copyright (c) 2016 Adriano Tinoco d'Oliveira Rezende
|
||||
*
|
||||
* Based on the JSON parser by Patrick van Bergen
|
||||
* http://techblog.procurios.nl/k/news/view/14605/14863/how-do-i-write-my-own-parser-(for-json).html
|
||||
*
|
||||
* Changes made:
|
||||
*
|
||||
* - Optimized parser speed (deserialize roughly near 3x faster than original)
|
||||
* - Added support to handle lexer/parser error messages with line numbers
|
||||
* - Added more fine grained control over type conversions during the parsing
|
||||
* - Refactory API (Separate Lexer code from Parser code and the Encoder from Decoder)
|
||||
*
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
|
||||
* and associated documentation files (the "Software"), to deal in the Software without restriction,
|
||||
* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
* The above copyright notice and this permission notice shall be included in all copies or substantial
|
||||
* portions of the Software.
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
|
||||
* LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
||||
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
|
||||
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
*/
|
||||
|
||||
using System;
|
||||
using System.Text;
|
||||
using System.Collections;
|
||||
using System.Globalization;
|
||||
using System.Collections.Generic;
|
||||
|
||||
namespace SharpJson
|
||||
{
|
||||
class Lexer
|
||||
{
|
||||
public enum Token {
|
||||
None,
|
||||
Null,
|
||||
True,
|
||||
False,
|
||||
Colon,
|
||||
Comma,
|
||||
String,
|
||||
Number,
|
||||
CurlyOpen,
|
||||
CurlyClose,
|
||||
SquaredOpen,
|
||||
SquaredClose,
|
||||
};
|
||||
|
||||
public bool hasError {
|
||||
get {
|
||||
return !success;
|
||||
}
|
||||
}
|
||||
|
||||
public int lineNumber {
|
||||
get;
|
||||
private set;
|
||||
}
|
||||
|
||||
public bool parseNumbersAsFloat {
|
||||
get;
|
||||
set;
|
||||
}
|
||||
|
||||
char[] json;
|
||||
int index = 0;
|
||||
bool success = true;
|
||||
char[] stringBuffer = new char[4096];
|
||||
|
||||
public Lexer(string text)
|
||||
{
|
||||
Reset();
|
||||
|
||||
json = text.ToCharArray();
|
||||
parseNumbersAsFloat = false;
|
||||
}
|
||||
|
||||
public void Reset()
|
||||
{
|
||||
index = 0;
|
||||
lineNumber = 1;
|
||||
success = true;
|
||||
}
|
||||
|
||||
public string ParseString()
|
||||
{
|
||||
int idx = 0;
|
||||
StringBuilder builder = null;
|
||||
|
||||
SkipWhiteSpaces();
|
||||
|
||||
// "
|
||||
char c = json[index++];
|
||||
|
||||
bool failed = false;
|
||||
bool complete = false;
|
||||
|
||||
while (!complete && !failed) {
|
||||
if (index == json.Length)
|
||||
break;
|
||||
|
||||
c = json[index++];
|
||||
if (c == '"') {
|
||||
complete = true;
|
||||
break;
|
||||
} else if (c == '\\') {
|
||||
if (index == json.Length)
|
||||
break;
|
||||
|
||||
c = json[index++];
|
||||
|
||||
switch (c) {
|
||||
case '"':
|
||||
stringBuffer[idx++] = '"';
|
||||
break;
|
||||
case '\\':
|
||||
stringBuffer[idx++] = '\\';
|
||||
break;
|
||||
case '/':
|
||||
stringBuffer[idx++] = '/';
|
||||
break;
|
||||
case 'b':
|
||||
stringBuffer[idx++] = '\b';
|
||||
break;
|
||||
case'f':
|
||||
stringBuffer[idx++] = '\f';
|
||||
break;
|
||||
case 'n':
|
||||
stringBuffer[idx++] = '\n';
|
||||
break;
|
||||
case 'r':
|
||||
stringBuffer[idx++] = '\r';
|
||||
break;
|
||||
case 't':
|
||||
stringBuffer[idx++] = '\t';
|
||||
break;
|
||||
case 'u':
|
||||
int remainingLength = json.Length - index;
|
||||
if (remainingLength >= 4) {
|
||||
var hex = new string(json, index, 4);
|
||||
|
||||
// XXX: handle UTF
|
||||
stringBuffer[idx++] = (char) Convert.ToInt32(hex, 16);
|
||||
|
||||
// skip 4 chars
|
||||
index += 4;
|
||||
} else {
|
||||
failed = true;
|
||||
}
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
stringBuffer[idx++] = c;
|
||||
}
|
||||
|
||||
if (idx >= stringBuffer.Length) {
|
||||
if (builder == null)
|
||||
builder = new StringBuilder();
|
||||
|
||||
builder.Append(stringBuffer, 0, idx);
|
||||
idx = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (!complete) {
|
||||
success = false;
|
||||
return null;
|
||||
}
|
||||
|
||||
if (builder != null)
|
||||
return builder.ToString ();
|
||||
else
|
||||
return new string (stringBuffer, 0, idx);
|
||||
}
|
||||
|
||||
string GetNumberString()
|
||||
{
|
||||
SkipWhiteSpaces();
|
||||
|
||||
int lastIndex = GetLastIndexOfNumber(index);
|
||||
int charLength = (lastIndex - index) + 1;
|
||||
|
||||
var result = new string (json, index, charLength);
|
||||
|
||||
index = lastIndex + 1;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
public float ParseFloatNumber()
|
||||
{
|
||||
float number;
|
||||
var str = GetNumberString ();
|
||||
|
||||
if (!float.TryParse (str, NumberStyles.Float, CultureInfo.InvariantCulture, out number))
|
||||
return 0;
|
||||
|
||||
return number;
|
||||
}
|
||||
|
||||
public double ParseDoubleNumber()
|
||||
{
|
||||
double number;
|
||||
var str = GetNumberString ();
|
||||
|
||||
if (!double.TryParse(str, NumberStyles.Any, CultureInfo.InvariantCulture, out number))
|
||||
return 0;
|
||||
|
||||
return number;
|
||||
}
|
||||
|
||||
int GetLastIndexOfNumber(int index)
|
||||
{
|
||||
int lastIndex;
|
||||
|
||||
for (lastIndex = index; lastIndex < json.Length; lastIndex++) {
|
||||
char ch = json[lastIndex];
|
||||
|
||||
if ((ch < '0' || ch > '9') && ch != '+' && ch != '-'
|
||||
&& ch != '.' && ch != 'e' && ch != 'E')
|
||||
break;
|
||||
}
|
||||
|
||||
return lastIndex - 1;
|
||||
}
|
||||
|
||||
void SkipWhiteSpaces()
|
||||
{
|
||||
for (; index < json.Length; index++) {
|
||||
char ch = json[index];
|
||||
|
||||
if (ch == '\n')
|
||||
lineNumber++;
|
||||
|
||||
if (!char.IsWhiteSpace(json[index]))
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
public Token LookAhead()
|
||||
{
|
||||
SkipWhiteSpaces();
|
||||
|
||||
int savedIndex = index;
|
||||
return NextToken(json, ref savedIndex);
|
||||
}
|
||||
|
||||
public Token NextToken()
|
||||
{
|
||||
SkipWhiteSpaces();
|
||||
return NextToken(json, ref index);
|
||||
}
|
||||
|
||||
static Token NextToken(char[] json, ref int index)
|
||||
{
|
||||
if (index == json.Length)
|
||||
return Token.None;
|
||||
|
||||
char c = json[index++];
|
||||
|
||||
switch (c) {
|
||||
case '{':
|
||||
return Token.CurlyOpen;
|
||||
case '}':
|
||||
return Token.CurlyClose;
|
||||
case '[':
|
||||
return Token.SquaredOpen;
|
||||
case ']':
|
||||
return Token.SquaredClose;
|
||||
case ',':
|
||||
return Token.Comma;
|
||||
case '"':
|
||||
return Token.String;
|
||||
case '0': case '1': case '2': case '3': case '4':
|
||||
case '5': case '6': case '7': case '8': case '9':
|
||||
case '-':
|
||||
return Token.Number;
|
||||
case ':':
|
||||
return Token.Colon;
|
||||
}
|
||||
|
||||
index--;
|
||||
|
||||
int remainingLength = json.Length - index;
|
||||
|
||||
// false
|
||||
if (remainingLength >= 5) {
|
||||
if (json[index] == 'f' &&
|
||||
json[index + 1] == 'a' &&
|
||||
json[index + 2] == 'l' &&
|
||||
json[index + 3] == 's' &&
|
||||
json[index + 4] == 'e') {
|
||||
index += 5;
|
||||
return Token.False;
|
||||
}
|
||||
}
|
||||
|
||||
// true
|
||||
if (remainingLength >= 4) {
|
||||
if (json[index] == 't' &&
|
||||
json[index + 1] == 'r' &&
|
||||
json[index + 2] == 'u' &&
|
||||
json[index + 3] == 'e') {
|
||||
index += 4;
|
||||
return Token.True;
|
||||
}
|
||||
}
|
||||
|
||||
// null
|
||||
if (remainingLength >= 4) {
|
||||
if (json[index] == 'n' &&
|
||||
json[index + 1] == 'u' &&
|
||||
json[index + 2] == 'l' &&
|
||||
json[index + 3] == 'l') {
|
||||
index += 4;
|
||||
return Token.Null;
|
||||
}
|
||||
}
|
||||
|
||||
return Token.None;
|
||||
}
|
||||
}
|
||||
|
||||
public class JsonDecoder
|
||||
{
|
||||
public string errorMessage {
|
||||
get;
|
||||
private set;
|
||||
}
|
||||
|
||||
public bool parseNumbersAsFloat {
|
||||
get;
|
||||
set;
|
||||
}
|
||||
|
||||
Lexer lexer;
|
||||
|
||||
public JsonDecoder()
|
||||
{
|
||||
errorMessage = null;
|
||||
parseNumbersAsFloat = false;
|
||||
}
|
||||
|
||||
public object Decode(string text)
|
||||
{
|
||||
errorMessage = null;
|
||||
|
||||
lexer = new Lexer(text);
|
||||
lexer.parseNumbersAsFloat = parseNumbersAsFloat;
|
||||
|
||||
return ParseValue();
|
||||
}
|
||||
|
||||
public static object DecodeText(string text)
|
||||
{
|
||||
var builder = new JsonDecoder();
|
||||
return builder.Decode(text);
|
||||
}
|
||||
|
||||
IDictionary<string, object> ParseObject()
|
||||
{
|
||||
var table = new Dictionary<string, object>();
|
||||
|
||||
// {
|
||||
lexer.NextToken();
|
||||
|
||||
while (true) {
|
||||
var token = lexer.LookAhead();
|
||||
|
||||
switch (token) {
|
||||
case Lexer.Token.None:
|
||||
TriggerError("Invalid token");
|
||||
return null;
|
||||
case Lexer.Token.Comma:
|
||||
lexer.NextToken();
|
||||
break;
|
||||
case Lexer.Token.CurlyClose:
|
||||
lexer.NextToken();
|
||||
return table;
|
||||
default:
|
||||
// name
|
||||
string name = EvalLexer(lexer.ParseString());
|
||||
|
||||
if (errorMessage != null)
|
||||
return null;
|
||||
|
||||
// :
|
||||
token = lexer.NextToken();
|
||||
|
||||
if (token != Lexer.Token.Colon) {
|
||||
TriggerError("Invalid token; expected ':'");
|
||||
return null;
|
||||
}
|
||||
|
||||
// value
|
||||
object value = ParseValue();
|
||||
|
||||
if (errorMessage != null)
|
||||
return null;
|
||||
|
||||
table[name] = value;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
//return null; // Unreachable code
|
||||
}
|
||||
|
||||
IList<object> ParseArray()
|
||||
{
|
||||
var array = new List<object>();
|
||||
|
||||
// [
|
||||
lexer.NextToken();
|
||||
|
||||
while (true) {
|
||||
var token = lexer.LookAhead();
|
||||
|
||||
switch (token) {
|
||||
case Lexer.Token.None:
|
||||
TriggerError("Invalid token");
|
||||
return null;
|
||||
case Lexer.Token.Comma:
|
||||
lexer.NextToken();
|
||||
break;
|
||||
case Lexer.Token.SquaredClose:
|
||||
lexer.NextToken();
|
||||
return array;
|
||||
default:
|
||||
object value = ParseValue();
|
||||
|
||||
if (errorMessage != null)
|
||||
return null;
|
||||
|
||||
array.Add(value);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
//return null; // Unreachable code
|
||||
}
|
||||
|
||||
object ParseValue()
|
||||
{
|
||||
switch (lexer.LookAhead()) {
|
||||
case Lexer.Token.String:
|
||||
return EvalLexer(lexer.ParseString());
|
||||
case Lexer.Token.Number:
|
||||
if (parseNumbersAsFloat)
|
||||
return EvalLexer(lexer.ParseFloatNumber());
|
||||
else
|
||||
return EvalLexer(lexer.ParseDoubleNumber());
|
||||
case Lexer.Token.CurlyOpen:
|
||||
return ParseObject();
|
||||
case Lexer.Token.SquaredOpen:
|
||||
return ParseArray();
|
||||
case Lexer.Token.True:
|
||||
lexer.NextToken();
|
||||
return true;
|
||||
case Lexer.Token.False:
|
||||
lexer.NextToken();
|
||||
return false;
|
||||
case Lexer.Token.Null:
|
||||
lexer.NextToken();
|
||||
return null;
|
||||
case Lexer.Token.None:
|
||||
break;
|
||||
}
|
||||
|
||||
TriggerError("Unable to parse value");
|
||||
return null;
|
||||
}
|
||||
|
||||
void TriggerError(string message)
|
||||
{
|
||||
errorMessage = string.Format("Error: '{0}' at line {1}",
|
||||
message, lexer.lineNumber);
|
||||
}
|
||||
|
||||
T EvalLexer<T>(T value)
|
||||
{
|
||||
if (lexer.hasError)
|
||||
TriggerError("Lexical error ocurred");
|
||||
|
||||
return value;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user