Mercurial > pub > ImplabNet

comparison Implab/Formats/JSON/StringTranslator.cs @ 176:0c3c69fe225b ref20160224

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rewritten the text scanner
author cin
date Tue, 22 Mar 2016 18:58:40 +0300
parents 419aa51b04fd
children c32688129f14
comparison
equal deleted inserted replaced
175:96a89dcb4060 176:0c3c69fe225b
1 using Implab; 1 using Implab;
2 using Implab.Parsing; 2 using Implab.Formats;
3 using System; 3 using System;
4 using System.Collections.Generic; 4 using System.Collections.Generic;
5 using System.Diagnostics; 5 using System.Diagnostics;
6 using System.Linq; 6 using System.Linq;
7 using System.Text; 7 using System.Text;
8 using System.Threading.Tasks; 8 using System.Threading.Tasks;
9 9
10 namespace Implab.JSON { 10 namespace Implab.Formats.JSON {
11 /// <summary> 11 /// <summary>
12 /// Класс для преобразования экранированной строки JSON 12 /// Класс для преобразования экранированной строки JSON
13 /// </summary> 13 /// </summary>
14 public class StringTranslator : Scanner { 14 public class StringTranslator : TextScanner<JSONGrammar.TokenType> {
15 static readonly char[] _escMap; 15 static readonly char[] _escMap;
16 static readonly int[] _hexMap; 16 static readonly int[] _hexMap;
17 17
18 static StringTranslator() { 18 static StringTranslator() {
19 var chars = new char[] { 'b', 'f', 't', 'r', 'n', '\\', '/' }; 19 var chars = new char[] { 'b', 'f', 't', 'r', 'n', '\\', '/' };
32 for (int i = 0; i < hexs.Length; i++) 32 for (int i = 0; i < hexs.Length; i++)
33 _hexMap[hexs[i]] = ints[i]; 33 _hexMap[hexs[i]] = ints[i];
34 34
35 } 35 }
36 36
37 public StringTranslator() 37 public StringTranslator() {
38 : base(JSONGrammar.Instance.JsonStringDFA.States, JSONGrammar.Instance.JsonStringDFA.Alphabet.GetTranslationMap()) {
39 } 38 }
40 39
41 public string Translate(string data) { 40 public string Translate(string data) {
42 Safe.ArgumentNotNull(data, "data"); 41 Safe.ArgumentNotNull(data, "data");
43 return Translate(data.ToCharArray()); 42 return Translate(data.ToCharArray());
57 Feed(data,length); 56 Feed(data,length);
58 57
59 int pos = 0; 58 int pos = 0;
60 59
61 while (ReadTokenInternal()) { 60 while (ReadTokenInternal()) {
62 switch ((JSONGrammar.TokenType)TokenTags[0]) { 61 switch ((JSONGrammar.TokenType)Tags[0]) {
63 case JSONGrammar.TokenType.UnescapedChar: 62 case JSONGrammar.TokenType.UnescapedChar:
64 Array.Copy(m_buffer,m_tokenOffset,translated,pos,m_tokenLen); 63 Array.Copy(m_buffer,m_tokenOffset,translated,pos,m_tokenLen);
65 pos += m_tokenLen; 64 pos += m_tokenLen;
66 break; 65 break;
67 case JSONGrammar.TokenType.EscapedChar: 66 case JSONGrammar.TokenType.EscapedChar: