##// END OF EJS Templates
+JSONXmlReaderOptions...
cin -
r60:10c7337d29e7 default
parent child
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@@ -0,0 +1,61
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Xml;
6
7 namespace Implab.JSON {
8 /// <summary>
9 /// Набор необязательных параметров для <see cref="JSONXmlReader"/>, позволяющий управлять процессом
10 /// интерпретации <c>JSON</c> документа.
11 /// </summary>
12 public class JSONXmlReaderOptions {
13 /// <summary>
14 /// Пространство имен в котором будут располагаться читаемые элементы документа
15 /// </summary>
16 public string NamespaceURI {
17 get;
18 set;
19 }
20
21 /// <summary>
22 /// Интерпретировать массивы как множественные элементы (убирает один уровень вложенности)
23 /// </summary>
24 public bool FlattenArrays {
25 get;
26 set;
27 }
28
29 /// <summary>
30 /// Префикс, для узлов документа
31 /// </summary>
32 public string NodesPrefix {
33 get;
34 set;
35 }
36
37 /// <summary>
38 /// Имя корневого элемента в xml документе
39 /// </summary>
40 public string RootName {
41 get;
42 set;
43 }
44
45 /// <summary>
46 /// Имя элемента для массивов, если не включена опция <see cref="FlattenArrays"/>.
47 /// </summary>
48 public string ArrayItemName {
49 get;
50 set;
51 }
52
53 /// <summary>
54 /// Таблица атомизированных строк для построения документа.
55 /// </summary>
56 public XmlNameTable NameTable {
57 get;
58 set;
59 }
60 }
61 }
@@ -1,105 +1,106
1 <?xml version="1.0" encoding="utf-8"?>
1 <?xml version="1.0" encoding="utf-8"?>
2 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
2 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
3 <PropertyGroup>
3 <PropertyGroup>
4 <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
4 <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
5 <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
5 <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
6 <ProductVersion>10.0.0</ProductVersion>
6 <ProductVersion>10.0.0</ProductVersion>
7 <SchemaVersion>2.0</SchemaVersion>
7 <SchemaVersion>2.0</SchemaVersion>
8 <ProjectGuid>{F550F1F8-8746-4AD0-9614-855F4C4B7F05}</ProjectGuid>
8 <ProjectGuid>{F550F1F8-8746-4AD0-9614-855F4C4B7F05}</ProjectGuid>
9 <OutputType>Library</OutputType>
9 <OutputType>Library</OutputType>
10 <RootNamespace>Implab</RootNamespace>
10 <RootNamespace>Implab</RootNamespace>
11 <AssemblyName>Implab</AssemblyName>
11 <AssemblyName>Implab</AssemblyName>
12 </PropertyGroup>
12 </PropertyGroup>
13 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
13 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
14 <DebugSymbols>true</DebugSymbols>
14 <DebugSymbols>true</DebugSymbols>
15 <DebugType>full</DebugType>
15 <DebugType>full</DebugType>
16 <Optimize>false</Optimize>
16 <Optimize>false</Optimize>
17 <OutputPath>bin\Debug</OutputPath>
17 <OutputPath>bin\Debug</OutputPath>
18 <DefineConstants>TRACE;DEBUG;</DefineConstants>
18 <DefineConstants>TRACE;DEBUG;</DefineConstants>
19 <ErrorReport>prompt</ErrorReport>
19 <ErrorReport>prompt</ErrorReport>
20 <WarningLevel>4</WarningLevel>
20 <WarningLevel>4</WarningLevel>
21 <ConsolePause>false</ConsolePause>
21 <ConsolePause>false</ConsolePause>
22 <RunCodeAnalysis>true</RunCodeAnalysis>
22 <RunCodeAnalysis>true</RunCodeAnalysis>
23 </PropertyGroup>
23 </PropertyGroup>
24 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
24 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
25 <DebugType>full</DebugType>
25 <DebugType>full</DebugType>
26 <Optimize>true</Optimize>
26 <Optimize>true</Optimize>
27 <OutputPath>bin\Release</OutputPath>
27 <OutputPath>bin\Release</OutputPath>
28 <ErrorReport>prompt</ErrorReport>
28 <ErrorReport>prompt</ErrorReport>
29 <WarningLevel>4</WarningLevel>
29 <WarningLevel>4</WarningLevel>
30 <ConsolePause>false</ConsolePause>
30 <ConsolePause>false</ConsolePause>
31 </PropertyGroup>
31 </PropertyGroup>
32 <ItemGroup>
32 <ItemGroup>
33 <Reference Include="System" />
33 <Reference Include="System" />
34 <Reference Include="System.XML" />
34 <Reference Include="System.XML" />
35 </ItemGroup>
35 </ItemGroup>
36 <ItemGroup>
36 <ItemGroup>
37 <Compile Include="Component.cs" />
37 <Compile Include="Component.cs" />
38 <Compile Include="CustomEqualityComparer.cs" />
38 <Compile Include="CustomEqualityComparer.cs" />
39 <Compile Include="Diagnostics\ConsoleTraceListener.cs" />
39 <Compile Include="Diagnostics\ConsoleTraceListener.cs" />
40 <Compile Include="Diagnostics\EventText.cs" />
40 <Compile Include="Diagnostics\EventText.cs" />
41 <Compile Include="Diagnostics\IEventTextFormatter.cs" />
41 <Compile Include="Diagnostics\IEventTextFormatter.cs" />
42 <Compile Include="Diagnostics\LogChannel.cs" />
42 <Compile Include="Diagnostics\LogChannel.cs" />
43 <Compile Include="Diagnostics\LogicalOperation.cs" />
43 <Compile Include="Diagnostics\LogicalOperation.cs" />
44 <Compile Include="Diagnostics\TextFileListener.cs" />
44 <Compile Include="Diagnostics\TextFileListener.cs" />
45 <Compile Include="Diagnostics\TextListenerBase.cs" />
45 <Compile Include="Diagnostics\TextListenerBase.cs" />
46 <Compile Include="Diagnostics\TraceLog.cs" />
46 <Compile Include="Diagnostics\TraceLog.cs" />
47 <Compile Include="Diagnostics\TraceContext.cs" />
47 <Compile Include="Diagnostics\TraceContext.cs" />
48 <Compile Include="Diagnostics\TraceEvent.cs" />
48 <Compile Include="Diagnostics\TraceEvent.cs" />
49 <Compile Include="Diagnostics\TraceEventType.cs" />
49 <Compile Include="Diagnostics\TraceEventType.cs" />
50 <Compile Include="Disposable.cs" />
50 <Compile Include="Disposable.cs" />
51 <Compile Include="ICancellable.cs" />
51 <Compile Include="ICancellable.cs" />
52 <Compile Include="IProgressHandler.cs" />
52 <Compile Include="IProgressHandler.cs" />
53 <Compile Include="IProgressNotifier.cs" />
53 <Compile Include="IProgressNotifier.cs" />
54 <Compile Include="IPromise.cs" />
54 <Compile Include="IPromise.cs" />
55 <Compile Include="IPromiseBase.cs" />
55 <Compile Include="IPromiseBase.cs" />
56 <Compile Include="IServiceLocator.cs" />
56 <Compile Include="IServiceLocator.cs" />
57 <Compile Include="ITaskController.cs" />
57 <Compile Include="ITaskController.cs" />
58 <Compile Include="JSON\JSONElementContext.cs" />
58 <Compile Include="JSON\JSONElementContext.cs" />
59 <Compile Include="JSON\JSONElementType.cs" />
59 <Compile Include="JSON\JSONElementType.cs" />
60 <Compile Include="JSON\JSONGrammar.cs" />
60 <Compile Include="JSON\JSONGrammar.cs" />
61 <Compile Include="JSON\JSONParser.cs" />
61 <Compile Include="JSON\JSONParser.cs" />
62 <Compile Include="JSON\JSONScanner.cs" />
62 <Compile Include="JSON\JSONScanner.cs" />
63 <Compile Include="JSON\JsonTokenType.cs" />
63 <Compile Include="JSON\JsonTokenType.cs" />
64 <Compile Include="JSON\JSONWriter.cs" />
64 <Compile Include="JSON\JSONWriter.cs" />
65 <Compile Include="JSON\JSONXmlReader.cs" />
65 <Compile Include="JSON\JSONXmlReader.cs" />
66 <Compile Include="JSON\JSONXmlReaderOptions.cs" />
66 <Compile Include="JSON\StringTranslator.cs" />
67 <Compile Include="JSON\StringTranslator.cs" />
67 <Compile Include="Parallels\DispatchPool.cs" />
68 <Compile Include="Parallels\DispatchPool.cs" />
68 <Compile Include="Parallels\ArrayTraits.cs" />
69 <Compile Include="Parallels\ArrayTraits.cs" />
69 <Compile Include="Parallels\MTQueue.cs" />
70 <Compile Include="Parallels\MTQueue.cs" />
70 <Compile Include="Parallels\WorkerPool.cs" />
71 <Compile Include="Parallels\WorkerPool.cs" />
71 <Compile Include="Parsing\Alphabet.cs" />
72 <Compile Include="Parsing\Alphabet.cs" />
72 <Compile Include="Parsing\AlphabetBase.cs" />
73 <Compile Include="Parsing\AlphabetBase.cs" />
73 <Compile Include="Parsing\AltToken.cs" />
74 <Compile Include="Parsing\AltToken.cs" />
74 <Compile Include="Parsing\BinaryToken.cs" />
75 <Compile Include="Parsing\BinaryToken.cs" />
75 <Compile Include="Parsing\CatToken.cs" />
76 <Compile Include="Parsing\CatToken.cs" />
76 <Compile Include="Parsing\CDFADefinition.cs" />
77 <Compile Include="Parsing\CDFADefinition.cs" />
77 <Compile Include="Parsing\DFABuilder.cs" />
78 <Compile Include="Parsing\DFABuilder.cs" />
78 <Compile Include="Parsing\DFADefinitionBase.cs" />
79 <Compile Include="Parsing\DFADefinitionBase.cs" />
79 <Compile Include="Parsing\DFAStateDescriptor.cs" />
80 <Compile Include="Parsing\DFAStateDescriptor.cs" />
80 <Compile Include="Parsing\DFAutomaton.cs" />
81 <Compile Include="Parsing\DFAutomaton.cs" />
81 <Compile Include="Parsing\EDFADefinition.cs" />
82 <Compile Include="Parsing\EDFADefinition.cs" />
82 <Compile Include="Parsing\EmptyToken.cs" />
83 <Compile Include="Parsing\EmptyToken.cs" />
83 <Compile Include="Parsing\EndToken.cs" />
84 <Compile Include="Parsing\EndToken.cs" />
84 <Compile Include="Parsing\EnumAlphabet.cs" />
85 <Compile Include="Parsing\EnumAlphabet.cs" />
85 <Compile Include="Parsing\Grammar.cs" />
86 <Compile Include="Parsing\Grammar.cs" />
86 <Compile Include="Parsing\IAlphabet.cs" />
87 <Compile Include="Parsing\IAlphabet.cs" />
87 <Compile Include="Parsing\IDFADefinition.cs" />
88 <Compile Include="Parsing\IDFADefinition.cs" />
88 <Compile Include="Parsing\IVisitor.cs" />
89 <Compile Include="Parsing\IVisitor.cs" />
89 <Compile Include="Parsing\ParserException.cs" />
90 <Compile Include="Parsing\ParserException.cs" />
90 <Compile Include="Parsing\Scanner.cs" />
91 <Compile Include="Parsing\Scanner.cs" />
91 <Compile Include="Parsing\StarToken.cs" />
92 <Compile Include="Parsing\StarToken.cs" />
92 <Compile Include="Parsing\SymbolToken.cs" />
93 <Compile Include="Parsing\SymbolToken.cs" />
93 <Compile Include="Parsing\Token.cs" />
94 <Compile Include="Parsing\Token.cs" />
94 <Compile Include="ServiceLocator.cs" />
95 <Compile Include="ServiceLocator.cs" />
95 <Compile Include="TaskController.cs" />
96 <Compile Include="TaskController.cs" />
96 <Compile Include="ProgressInitEventArgs.cs" />
97 <Compile Include="ProgressInitEventArgs.cs" />
97 <Compile Include="Properties\AssemblyInfo.cs" />
98 <Compile Include="Properties\AssemblyInfo.cs" />
98 <Compile Include="Promise.cs" />
99 <Compile Include="Promise.cs" />
99 <Compile Include="Parallels\AsyncPool.cs" />
100 <Compile Include="Parallels\AsyncPool.cs" />
100 <Compile Include="Safe.cs" />
101 <Compile Include="Safe.cs" />
101 <Compile Include="ValueEventArgs.cs" />
102 <Compile Include="ValueEventArgs.cs" />
102 </ItemGroup>
103 </ItemGroup>
103 <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
104 <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
104 <ItemGroup />
105 <ItemGroup />
105 </Project> No newline at end of file
106 </Project>
@@ -1,89 +1,100
1 using Implab.Parsing;
1 using Implab.Parsing;
2 using System;
2 using System;
3 using System.Collections.Generic;
3 using System.Collections.Generic;
4 using System.Globalization;
4 using System.Globalization;
5 using System.Linq;
5 using System.Linq;
6 using System.Text;
6 using System.Text;
7 using System.Threading.Tasks;
7 using System.Threading.Tasks;
8
8
9 namespace Implab.JSON {
9 namespace Implab.JSON {
10 /// <summary>
10 /// <summary>
11 /// Сканнер, разбивающий поток символов на токены JSON.
11 /// Сканнер (лексер), разбивающий поток символов на токены JSON.
12 /// </summary>
12 /// </summary>
13 public class JSONScanner : Scanner {
13 public class JSONScanner : Scanner {
14 char[] m_stringBuffer;
14 char[] m_stringBuffer;
15 DFAStateDescriptior[] m_stringDFA;
15 DFAStateDescriptior[] m_stringDFA;
16 int[] m_stringAlphabet;
16 int[] m_stringAlphabet;
17
17
18 /// <summary>
19 /// Создает новый экземпляр сканнера
20 /// </summary>
18 public JSONScanner()
21 public JSONScanner()
19 : base(JSONGrammar.Instance.JsonDFA) {
22 : base(JSONGrammar.Instance.JsonDFA) {
20 m_stringBuffer = new char[1024];
23 m_stringBuffer = new char[1024];
21 var dfa = JSONGrammar.Instance.JsonStringDFA;
24 var dfa = JSONGrammar.Instance.JsonStringDFA;
22 m_stringAlphabet = dfa.Alphabet.GetTranslationMap();
25 m_stringAlphabet = dfa.Alphabet.GetTranslationMap();
23 m_stringDFA = dfa.States;
26 m_stringDFA = dfa.States;
24 }
27 }
25
28
29 /// <summary>
30 /// Читает следующий лексический элемент из входных данных.
31 /// </summary>
32 /// <param name="tokenValue">Возвращает значение прочитанного токена.</param>
33 /// <param name="tokenType">Возвращает тип прочитанного токена.</param>
34 /// <returns><c>true</c> - чтение произведено успешно. <c>false</c> - достигнут конец входных данных</returns>
35 /// <remarks>В случе если токен не распознается, возникает исключение. Значения токенов обрабатываются, т.е.
36 /// в строках обрабатываются экранированные символы, числа становтся типа double.</remarks>
26 public bool ReadToken(out object tokenValue, out JsonTokenType tokenType) {
37 public bool ReadToken(out object tokenValue, out JsonTokenType tokenType) {
27 if (ReadTokenInternal()) {
38 if (ReadTokenInternal()) {
28 switch ((JSONGrammar.TokenType)m_currentState.tag[0]) {
39 switch ((JSONGrammar.TokenType)m_currentState.tag[0]) {
29 case JSONGrammar.TokenType.StringBound:
40 case JSONGrammar.TokenType.StringBound:
30 tokenValue = ReadString();
41 tokenValue = ReadString();
31 tokenType = JsonTokenType.String;
42 tokenType = JsonTokenType.String;
32 break;
43 break;
33 case JSONGrammar.TokenType.Number:
44 case JSONGrammar.TokenType.Number:
34 tokenValue = Double.Parse(new String(m_buffer, m_tokenOffset, m_tokenLen), CultureInfo.InvariantCulture);
45 tokenValue = Double.Parse(new String(m_buffer, m_tokenOffset, m_tokenLen), CultureInfo.InvariantCulture);
35 tokenType = JsonTokenType.Number;
46 tokenType = JsonTokenType.Number;
36 break;
47 break;
37 default:
48 default:
38 tokenType = (JsonTokenType)m_currentState.tag[0];
49 tokenType = (JsonTokenType)m_currentState.tag[0];
39 tokenValue = new String(m_buffer, m_tokenOffset, m_tokenLen);
50 tokenValue = new String(m_buffer, m_tokenOffset, m_tokenLen);
40 break;
51 break;
41 }
52 }
42 return true;
53 return true;
43 }
54 }
44 tokenValue = null;
55 tokenValue = null;
45 tokenType = JsonTokenType.None;
56 tokenType = JsonTokenType.None;
46 return false;
57 return false;
47 }
58 }
48
59
49 string ReadString() {
60 string ReadString() {
50 int pos = 0;
61 int pos = 0;
51 Switch(m_stringDFA, m_stringAlphabet);
62 Switch(m_stringDFA, m_stringAlphabet);
52 while (ReadTokenInternal()) {
63 while (ReadTokenInternal()) {
53 switch ((JSONGrammar.TokenType)m_currentState.tag[0]) {
64 switch ((JSONGrammar.TokenType)m_currentState.tag[0]) {
54 case JSONGrammar.TokenType.StringBound:
65 case JSONGrammar.TokenType.StringBound:
55 Restore();
66 Restore();
56 return new String(m_stringBuffer, 0, pos);
67 return new String(m_stringBuffer, 0, pos);
57 case JSONGrammar.TokenType.UnescapedChar:
68 case JSONGrammar.TokenType.UnescapedChar:
58 EnsureStringBufferSize(pos + m_tokenLen);
69 EnsureStringBufferSize(pos + m_tokenLen);
59 Array.Copy(m_buffer, m_tokenOffset, m_stringBuffer, pos, m_tokenLen);
70 Array.Copy(m_buffer, m_tokenOffset, m_stringBuffer, pos, m_tokenLen);
60 pos += m_tokenLen;
71 pos += m_tokenLen;
61 break;
72 break;
62 case JSONGrammar.TokenType.EscapedUnicode:
73 case JSONGrammar.TokenType.EscapedUnicode:
63 EnsureStringBufferSize(pos + 1);
74 EnsureStringBufferSize(pos + 1);
64 m_stringBuffer[pos] = StringTranslator.TranslateHexUnicode(m_buffer, m_tokenOffset + 2);
75 m_stringBuffer[pos] = StringTranslator.TranslateHexUnicode(m_buffer, m_tokenOffset + 2);
65 pos++;
76 pos++;
66 break;
77 break;
67 case JSONGrammar.TokenType.EscapedChar:
78 case JSONGrammar.TokenType.EscapedChar:
68 EnsureStringBufferSize(pos + 1);
79 EnsureStringBufferSize(pos + 1);
69 m_stringBuffer[pos] = StringTranslator.TranslateEscapedChar(m_buffer[m_tokenOffset + 1]);
80 m_stringBuffer[pos] = StringTranslator.TranslateEscapedChar(m_buffer[m_tokenOffset + 1]);
70 pos++;
81 pos++;
71 break;
82 break;
72 default:
83 default:
73 break;
84 break;
74 }
85 }
75
86
76 }
87 }
77
88
78 throw new ParserException("Unexpected end of data");
89 throw new ParserException("Unexpected end of data");
79 }
90 }
80
91
81 void EnsureStringBufferSize(int size) {
92 void EnsureStringBufferSize(int size) {
82 if (size > m_stringBuffer.Length) {
93 if (size > m_stringBuffer.Length) {
83 var newBuffer = new char[size];
94 var newBuffer = new char[size];
84 m_stringBuffer.CopyTo(newBuffer, 0);
95 m_stringBuffer.CopyTo(newBuffer, 0);
85 m_stringBuffer = newBuffer;
96 m_stringBuffer = newBuffer;
86 }
97 }
87 }
98 }
88 }
99 }
89 }
100 }
@@ -1,286 +1,310
1 using Implab;
1 using Implab;
2 using Implab.JSON;
3 using Implab.Parsing;
2 using Implab.Parsing;
4 using System;
3 using System;
5 using System.Collections.Generic;
4 using System.Collections.Generic;
5 using System.IO;
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 using System.Xml;
9 using System.Xml;
10
10
11 namespace ConsPlay {
11 namespace Implab.JSON {
12 public class JSONXmlReader : XmlReader {
12 public class JSONXmlReader : XmlReader {
13
13
14 enum ValueContext {
14 enum ValueContext {
15 Undefined,
15 Undefined,
16 ElementStart,
16 ElementStart,
17 ElementValue,
17 ElementValue,
18 ElementEnd,
18 ElementEnd,
19 ElementEmpty
19 ElementEmpty
20 }
20 }
21
21
22 struct LocalNameContext {
22 struct LocalNameContext {
23 public string localName;
23 public string localName;
24 public bool isArray;
24 public bool isArray;
25 }
25 }
26
26
27 JSONParser m_parser;
27 JSONParser m_parser;
28 ValueContext m_valueContext;
28 ValueContext m_valueContext;
29 ReadState m_state = ReadState.Initial;
29 ReadState m_state = ReadState.Initial;
30 Stack<LocalNameContext> m_localNameStack = new Stack<LocalNameContext>();
30 Stack<LocalNameContext> m_localNameStack = new Stack<LocalNameContext>();
31 LocalNameContext m_localName;
31 LocalNameContext m_localName;
32 string m_rootName = "json";
33 string m_prefix = String.Empty;
34 string m_namespaceUri = String.Empty;
35 bool m_flattenArrays = false;
36 NameTable m_nameTable = new NameTable();
37 int m_depthCorrection = 0;
32 int m_depthCorrection = 0;
38
33
39 public JSONXmlReader(JSONParser parser) {
34 readonly string m_rootName;
35 readonly string m_prefix;
36 readonly string m_namespaceUri;
37 readonly bool m_flattenArrays;
38 readonly string m_arrayItemName;
39 readonly XmlNameTable m_nameTable;
40
41 public JSONXmlReader(JSONParser parser, JSONXmlReaderOptions options) {
40 Safe.ArgumentNotNull(parser, "parser");
42 Safe.ArgumentNotNull(parser, "parser");
41 m_parser = parser;
43 m_parser = parser;
44
45 if (options != null) {
46 m_prefix = options.NodesPrefix ?? String.Empty;
47 m_namespaceUri = options.NamespaceURI ?? String.Empty;
48 m_rootName = options.RootName ?? "json";
49 m_flattenArrays = options.FlattenArrays;
50 m_arrayItemName = options.ArrayItemName ?? "item";
51 m_nameTable = options.NameTable ?? new NameTable();
52 } else {
53 m_prefix = String.Empty;
54 m_namespaceUri = String.Empty;
55 m_rootName = "json";
56 m_flattenArrays = false;
57 m_arrayItemName = "item";
58 m_nameTable = new NameTable();
59 }
42 }
60 }
43
61
44 /// <summary>
62 /// <summary>
45 /// Always 0, JSON doesn't support attributes
63 /// Always 0, JSON doesn't support attributes
46 /// </summary>
64 /// </summary>
47 public override int AttributeCount {
65 public override int AttributeCount {
48 get { return 0; }
66 get { return 0; }
49 }
67 }
50
68
51 public override string BaseURI {
69 public override string BaseURI {
52 get { return String.Empty; }
70 get { return String.Empty; }
53 }
71 }
54
72
55 public override int Depth {
73 public override int Depth {
56 get {
74 get {
57 return m_localNameStack.Count+m_depthCorrection;
75 return m_localNameStack.Count+m_depthCorrection;
58 }
76 }
59 }
77 }
60
78
61 public override bool EOF {
79 public override bool EOF {
62 get { return m_parser.EOF; }
80 get { return m_parser.EOF; }
63 }
81 }
64
82
65 /// <summary>
83 /// <summary>
66 /// Always throws an exception
84 /// Always throws an exception
67 /// </summary>
85 /// </summary>
68 /// <param name="i"></param>
86 /// <param name="i"></param>
69 /// <returns></returns>
87 /// <returns></returns>
70 public override string GetAttribute(int i) {
88 public override string GetAttribute(int i) {
71 throw new ArgumentOutOfRangeException();
89 throw new ArgumentOutOfRangeException();
72 }
90 }
73
91
74 /// <summary>
92 /// <summary>
75 /// Always returns empty string
93 /// Always returns empty string
76 /// </summary>
94 /// </summary>
77 /// <param name="name"></param>
95 /// <param name="name"></param>
78 /// <param name="namespaceURI"></param>
96 /// <param name="namespaceURI"></param>
79 /// <returns></returns>
97 /// <returns></returns>
80 public override string GetAttribute(string name, string namespaceURI) {
98 public override string GetAttribute(string name, string namespaceURI) {
81 return String.Empty;
99 return String.Empty;
82 }
100 }
83
101
84 /// <summary>
102 /// <summary>
85 /// Always returns empty string
103 /// Always returns empty string
86 /// </summary>
104 /// </summary>
87 /// <param name="name"></param>
105 /// <param name="name"></param>
88 /// <returns></returns>
106 /// <returns></returns>
89 public override string GetAttribute(string name) {
107 public override string GetAttribute(string name) {
90 return String.Empty;
108 return String.Empty;
91 }
109 }
92
110
93 public override bool IsEmptyElement {
111 public override bool IsEmptyElement {
94 get { return m_parser.ElementType == JSONElementType.Value && m_valueContext == ValueContext.ElementEmpty; }
112 get { return m_parser.ElementType == JSONElementType.Value && m_valueContext == ValueContext.ElementEmpty; }
95 }
113 }
96
114
97 public override string LocalName {
115 public override string LocalName {
98 get { return m_localName.localName; }
116 get { return m_localName.localName; }
99 }
117 }
100
118
101 public override string LookupNamespace(string prefix) {
119 public override string LookupNamespace(string prefix) {
102 if (String.IsNullOrEmpty(prefix) || prefix == m_prefix)
120 if (String.IsNullOrEmpty(prefix) || prefix == m_prefix)
103 return m_namespaceUri;
121 return m_namespaceUri;
104 else
122 else
105 return String.Empty;
123 return String.Empty;
106 }
124 }
107
125
108 public override bool MoveToAttribute(string name, string ns) {
126 public override bool MoveToAttribute(string name, string ns) {
109 return false;
127 return false;
110 }
128 }
111
129
112 public override bool MoveToAttribute(string name) {
130 public override bool MoveToAttribute(string name) {
113 return false;
131 return false;
114 }
132 }
115
133
116 public override bool MoveToElement() {
134 public override bool MoveToElement() {
117 return false;
135 return false;
118 }
136 }
119
137
120 public override bool MoveToFirstAttribute() {
138 public override bool MoveToFirstAttribute() {
121 return false;
139 return false;
122 }
140 }
123
141
124 public override bool MoveToNextAttribute() {
142 public override bool MoveToNextAttribute() {
125 return false;
143 return false;
126 }
144 }
127
145
128 public override XmlNameTable NameTable {
146 public override XmlNameTable NameTable {
129 get { return m_nameTable; }
147 get { return m_nameTable; }
130 }
148 }
131
149
132 public override string NamespaceURI {
150 public override string NamespaceURI {
133 get { return m_namespaceUri; }
151 get { return m_namespaceUri; }
134 }
152 }
135
153
136 public override XmlNodeType NodeType {
154 public override XmlNodeType NodeType {
137 get {
155 get {
138 switch (m_parser.ElementType) {
156 switch (m_parser.ElementType) {
139 case JSONElementType.BeginObject:
157 case JSONElementType.BeginObject:
140 case JSONElementType.BeginArray:
158 case JSONElementType.BeginArray:
141 return XmlNodeType.Element;
159 return XmlNodeType.Element;
142 case JSONElementType.EndObject:
160 case JSONElementType.EndObject:
143 case JSONElementType.EndArray:
161 case JSONElementType.EndArray:
144 return XmlNodeType.EndElement;
162 return XmlNodeType.EndElement;
145 case JSONElementType.Value:
163 case JSONElementType.Value:
146 switch (m_valueContext) {
164 switch (m_valueContext) {
147 case ValueContext.ElementStart:
165 case ValueContext.ElementStart:
148 case ValueContext.ElementEmpty:
166 case ValueContext.ElementEmpty:
149 return XmlNodeType.Element;
167 return XmlNodeType.Element;
150 case ValueContext.ElementValue:
168 case ValueContext.ElementValue:
151 return XmlNodeType.Text;
169 return XmlNodeType.Text;
152 case ValueContext.ElementEnd:
170 case ValueContext.ElementEnd:
153 return XmlNodeType.EndElement;
171 return XmlNodeType.EndElement;
154 default:
172 default:
155 throw new InvalidOperationException();
173 throw new InvalidOperationException();
156 }
174 }
157 default:
175 default:
158 throw new InvalidOperationException();
176 throw new InvalidOperationException();
159 }
177 }
160 }
178 }
161 }
179 }
162
180
163 public override string Prefix {
181 public override string Prefix {
164 get { return m_prefix; }
182 get { return m_prefix; }
165 }
183 }
166
184
167 public override bool Read() {
185 public override bool Read() {
168 if (m_state != System.Xml.ReadState.Interactive && m_state != System.Xml.ReadState.Initial)
186 if (m_state != System.Xml.ReadState.Interactive && m_state != System.Xml.ReadState.Initial)
169 return false;
187 return false;
170
188
171 if (m_state == ReadState.Initial)
189 if (m_state == ReadState.Initial)
172 m_state = System.Xml.ReadState.Interactive;
190 m_state = System.Xml.ReadState.Interactive;
173
191
174 try {
192 try {
175 switch (m_parser.ElementType) {
193 switch (m_parser.ElementType) {
176 case JSONElementType.Value:
194 case JSONElementType.Value:
177 switch (m_valueContext) {
195 switch (m_valueContext) {
178 case ValueContext.ElementStart:
196 case ValueContext.ElementStart:
179 SetLocalName(String.Empty);
197 SetLocalName(String.Empty);
180 m_valueContext = ValueContext.ElementValue;
198 m_valueContext = ValueContext.ElementValue;
181 return true;
199 return true;
182 case ValueContext.ElementValue:
200 case ValueContext.ElementValue:
183 RestoreLocalName();
201 RestoreLocalName();
184 m_valueContext = ValueContext.ElementEnd;
202 m_valueContext = ValueContext.ElementEnd;
185 return true;
203 return true;
186 case ValueContext.ElementEmpty:
204 case ValueContext.ElementEmpty:
187 case ValueContext.ElementEnd:
205 case ValueContext.ElementEnd:
188 RestoreLocalName();
206 RestoreLocalName();
189 break;
207 break;
190 }
208 }
191 break;
209 break;
192 case JSONElementType.EndArray:
210 case JSONElementType.EndArray:
193 case JSONElementType.EndObject:
211 case JSONElementType.EndObject:
194 RestoreLocalName();
212 RestoreLocalName();
195 break;
213 break;
196 }
214 }
197 string itemName = m_parser.ElementType == JSONElementType.None ? m_rootName : m_flattenArrays ? m_localName.localName : "item";
215 string itemName = m_parser.ElementType == JSONElementType.None ? m_rootName : m_flattenArrays ? m_localName.localName : m_arrayItemName;
198 while (m_parser.Read()) {
216 while (m_parser.Read()) {
199 if (!String.IsNullOrEmpty(m_parser.ElementName))
217 if (!String.IsNullOrEmpty(m_parser.ElementName))
200 itemName = m_parser.ElementName;
218 itemName = m_parser.ElementName;
201
219
202 switch (m_parser.ElementType) {
220 switch (m_parser.ElementType) {
203 case JSONElementType.BeginArray:
221 case JSONElementType.BeginArray:
204 if (m_flattenArrays && !m_localName.isArray) {
222 if (m_flattenArrays && !m_localName.isArray) {
205 m_depthCorrection--;
223 m_depthCorrection--;
206 SetLocalName(itemName, true);
224 SetLocalName(itemName, true);
207 continue;
225 continue;
208 } else {
226 } else {
209 SetLocalName(itemName, true);
227 SetLocalName(itemName, true);
210 }
228 }
211 break;
229 break;
212 case JSONElementType.BeginObject:
230 case JSONElementType.BeginObject:
213 SetLocalName(itemName);
231 SetLocalName(itemName);
214 break;
232 break;
215 case JSONElementType.EndArray:
233 case JSONElementType.EndArray:
216 if (m_flattenArrays && !m_localNameStack.Peek().isArray) {
234 if (m_flattenArrays && !m_localNameStack.Peek().isArray) {
217 RestoreLocalName();
235 RestoreLocalName();
218 m_depthCorrection++;
236 m_depthCorrection++;
219 continue;
237 continue;
220 }
238 }
221 break;
239 break;
222 case JSONElementType.EndObject:
240 case JSONElementType.EndObject:
223 break;
241 break;
224 case JSONElementType.Value:
242 case JSONElementType.Value:
225 SetLocalName(itemName);
243 SetLocalName(itemName);
226 m_valueContext = m_parser.ElementValue == null ? ValueContext.ElementEmpty : ValueContext.ElementStart;
244 m_valueContext = m_parser.ElementValue == null ? ValueContext.ElementEmpty : ValueContext.ElementStart;
227 break;
245 break;
228 default:
246 default:
229 break;
247 break;
230 }
248 }
231 return true;
249 return true;
232 }
250 }
233
251
234 m_state = System.Xml.ReadState.EndOfFile;
252 m_state = System.Xml.ReadState.EndOfFile;
235 return false;
253 return false;
236 } catch {
254 } catch {
237 m_state = System.Xml.ReadState.Error;
255 m_state = System.Xml.ReadState.Error;
238 throw;
256 throw;
239 }
257 }
240 }
258 }
241
259
242 public override bool ReadAttributeValue() {
260 public override bool ReadAttributeValue() {
243 return false;
261 return false;
244 }
262 }
245
263
246 public override ReadState ReadState {
264 public override ReadState ReadState {
247 get { return m_state; }
265 get { return m_state; }
248 }
266 }
249
267
250 public override void ResolveEntity() {
268 public override void ResolveEntity() {
251 // do nothing
269 // do nothing
252 }
270 }
253
271
254 public override string Value {
272 public override string Value {
255 get { return m_parser.ElementValue == null ? String.Empty : m_parser.ElementValue.ToString(); }
273 get { return m_parser.ElementValue == null ? String.Empty : m_parser.ElementValue.ToString(); }
256 }
274 }
257
275
258 void SetLocalName(string name) {
276 void SetLocalName(string name) {
259 m_localNameStack.Push(m_localName);
277 m_localNameStack.Push(m_localName);
260 m_localName.localName = name;
278 m_localName.localName = name;
261 m_localName.isArray = false;
279 m_localName.isArray = false;
262 }
280 }
263
281
264 void SetLocalName(string name, bool isArray) {
282 void SetLocalName(string name, bool isArray) {
265 m_localNameStack.Push(m_localName);
283 m_localNameStack.Push(m_localName);
266 m_localName.localName = name;
284 m_localName.localName = name;
267 m_localName.isArray = isArray;
285 m_localName.isArray = isArray;
268 }
286 }
269
287
270 void RestoreLocalName() {
288 void RestoreLocalName() {
271 m_localName = m_localNameStack.Pop();
289 m_localName = m_localNameStack.Pop();
272 }
290 }
273
291
274 public override void Close() {
292 public override void Close() {
275
293
276 }
294 }
277
295
278 protected override void Dispose(bool disposing) {
296 protected override void Dispose(bool disposing) {
279 if (disposing) {
297 if (disposing) {
280 m_parser.Dispose();
298 m_parser.Dispose();
281 }
299 }
282 base.Dispose(disposing);
300 base.Dispose(disposing);
283 }
301 }
284
302
303
304 public static JSONXmlReader OpenFile(string file, JSONXmlReaderOptions options) {
305 var stream = File.OpenText(file);
306 var parser = new JSONParser(stream, true);
307 return new JSONXmlReader(parser, options);
308 }
285 }
309 }
286 }
310 }
@@ -1,259 +1,260
1 using Implab;
1 using Implab;
2 using System;
2 using System;
3 using System.Collections.Generic;
3 using System.Collections.Generic;
4 using System.IO;
4 using System.IO;
5 using System.Linq;
5 using System.Linq;
6 using System.Text;
6 using System.Text;
7 using System.Threading.Tasks;
7 using System.Threading.Tasks;
8
8
9 namespace Implab.Parsing {
9 namespace Implab.Parsing {
10 /// <summary>
10 /// <summary>
11 /// Базовый класс для разбора потока входных символов на токены.
11 /// Базовый класс для разбора потока входных символов на токены.
12 /// </summary>
12 /// </summary>
13 /// <remarks>
13 /// <remarks>
14 /// Сканнер имеет внутри буффер с симолами входного текста, по которому перемещаются два
14 /// Сканнер имеет внутри буффер с симолами входного текста, по которому перемещаются два
15 /// указателя, начала и конца токена, при перемещении искользуется ДКА для определения
15 /// указателя, начала и конца токена, при перемещении искользуется ДКА для определения
16 /// конца токена и допустимости текущего символа.
16 /// конца токена и допустимости текущего символа.
17 /// </remarks>
17 /// </remarks>
18 public abstract class Scanner : Disposable {
18 public abstract class Scanner : Disposable {
19 struct ScannerConfig {
19 struct ScannerConfig {
20 public DFAStateDescriptior[] states;
20 public DFAStateDescriptior[] states;
21 public int[] alphabetMap;
21 public int[] alphabetMap;
22 }
22 }
23
23
24 Stack<ScannerConfig> m_defs = new Stack<ScannerConfig>();
24 Stack<ScannerConfig> m_defs = new Stack<ScannerConfig>();
25
25
26 DFAStateDescriptior[] m_states;
26 DFAStateDescriptior[] m_states;
27 int[] m_alphabetMap;
27 int[] m_alphabetMap;
28
28
29 protected DFAStateDescriptior m_currentState;
29 protected DFAStateDescriptior m_currentState;
30 int m_previewCode;
30 int m_previewCode;
31
31
32 protected int m_tokenLen = 0;
32 protected int m_tokenLen = 0;
33 protected int m_tokenOffset;
33 protected int m_tokenOffset;
34
34
35 protected char[] m_buffer;
35 protected char[] m_buffer;
36 protected int m_bufferSize;
36 protected int m_bufferSize;
37 protected int m_pointer;
37 protected int m_pointer;
38
38
39 TextReader m_reader;
39 TextReader m_reader;
40 bool m_disposeReader;
40 bool m_disposeReader;
41 int m_chunkSize = 1024; // 1k
41 int m_chunkSize = 1024; // 1k
42 int m_limit = 10 * 1024 * 1024; // 10Mb
42 int m_limit = 10 * 1024 * 1024; // 10Mb
43
43
44 public Scanner(CDFADefinition definition) {
44 public Scanner(CDFADefinition definition) {
45 Safe.ArgumentNotNull(definition, "definition");
45 Safe.ArgumentNotNull(definition, "definition");
46
46
47 m_states = definition.States;
47 m_states = definition.States;
48 m_alphabetMap = definition.Alphabet.GetTranslationMap();
48 m_alphabetMap = definition.Alphabet.GetTranslationMap();
49
49
50 Feed(new char[0]);
50 Feed(new char[0]);
51 }
51 }
52
52
53 /// <summary>
53 /// <summary>
54 /// Заполняет входными данными буффер.
54 /// Заполняет входными данными буффер.
55 /// </summary>
55 /// </summary>
56 /// <param name="data">Данные для обработки.</param>
56 /// <param name="data">Данные для обработки.</param>
57 /// <remarks>Копирование данных не происходит, переданный массив используется в
57 /// <remarks>Копирование данных не происходит, переданный массив используется в
58 /// качестве входного буффера.</remarks>
58 /// качестве входного буффера.</remarks>
59 public void Feed(char[] data) {
59 public void Feed(char[] data) {
60 Safe.ArgumentNotNull(data, "data");
60 Safe.ArgumentNotNull(data, "data");
61
61
62 Feed(data, data.Length);
62 Feed(data, data.Length);
63 }
63 }
64
64
65 /// <summary>
65 /// <summary>
66 /// Заполняет буффур чтения входными данными.
66 /// Заполняет буффур чтения входными данными.
67 /// </summary>
67 /// </summary>
68 /// <param name="data">Данные для обработки.</param>
68 /// <param name="data">Данные для обработки.</param>
69 /// <param name="length">Длина данных для обработки.</param>
69 /// <param name="length">Длина данных для обработки.</param>
70 /// <remarks>Копирование данных не происходит, переданный массив используется в
70 /// <remarks>Копирование данных не происходит, переданный массив используется в
71 /// качестве входного буффера.</remarks>
71 /// качестве входного буффера.</remarks>
72 public void Feed(char[] data, int length) {
72 public void Feed(char[] data, int length) {
73 Safe.ArgumentNotNull(data, "data");
73 Safe.ArgumentNotNull(data, "data");
74 Safe.ArgumentInRange(length, 0, data.Length, "length");
74 Safe.ArgumentInRange(length, 0, data.Length, "length");
75 AssertNotDisposed();
75 AssertNotDisposed();
76
76
77 m_pointer = -1;
77 m_pointer = -1;
78 m_buffer = data;
78 m_buffer = data;
79 m_bufferSize = length;
79 m_bufferSize = length;
80 Shift();
80 Shift();
81 }
81 }
82
82
83 public void Feed(TextReader reader, bool dispose) {
83 public void Feed(TextReader reader, bool dispose) {
84 Safe.ArgumentNotNull(reader, "reader");
84 Safe.ArgumentNotNull(reader, "reader");
85 AssertNotDisposed();
85 AssertNotDisposed();
86
86
87 if (m_reader != null && m_disposeReader)
87 if (m_reader != null && m_disposeReader)
88 m_reader.Dispose();
88 m_reader.Dispose();
89
89
90 m_reader = reader;
90 m_reader = reader;
91 m_disposeReader = dispose;
91 m_disposeReader = dispose;
92 m_pointer = -1;
92 m_pointer = -1;
93 m_buffer = new char[m_chunkSize];
93 m_buffer = new char[m_chunkSize];
94 m_bufferSize = 0;
94 m_bufferSize = 0;
95 Shift();
95 Shift();
96 }
96 }
97
97
98 /// <summary>
98 /// <summary>
99 /// Получает текущий токен в виде строки.
99 /// Получает текущий токен в виде строки.
100 /// </summary>
100 /// </summary>
101 /// <returns></returns>
101 /// <returns></returns>
102 protected string GetTokenValue() {
102 protected string GetTokenValue() {
103 return new String(m_buffer, m_tokenOffset, m_tokenLen);
103 return new String(m_buffer, m_tokenOffset, m_tokenLen);
104 }
104 }
105
105
106 /// <summary>
106 /// <summary>
107 /// Метки текущего токена, которые были назначены в регулярном выражении.
107 /// Метки текущего токена, которые были назначены в регулярном выражении.
108 /// </summary>
108 /// </summary>
109 protected int[] TokenTags {
109 protected int[] TokenTags {
110 get {
110 get {
111 return m_currentState.tag;
111 return m_currentState.tag;
112 }
112 }
113 }
113 }
114
114
115 /// <summary>
115 /// <summary>
116 /// Признак конца данных
116 /// Признак конца данных
117 /// </summary>
117 /// </summary>
118 public bool EOF {
118 public bool EOF {
119 get {
119 get {
120 return m_pointer >= m_bufferSize;
120 return m_pointer >= m_bufferSize;
121 }
121 }
122 }
122 }
123
123
124 /// <summary>
124 /// <summary>
125 /// Читает следующий токен, при этом <see cref="m_tokenOffset"/> указывает на начало токена,
125 /// Читает следующий токен, при этом <see cref="m_tokenOffset"/> указывает на начало токена,
126 /// <see cref="m_tokenLen"/> на длину токена, <see cref="m_buffer"/> - массив символов, в
126 /// <see cref="m_tokenLen"/> на длину токена, <see cref="m_buffer"/> - массив символов, в
127 /// котором находится токен.
127 /// котором находится токен.
128 /// </summary>
128 /// </summary>
129 /// <returns><c>false</c> - достигнут конец данных, токен не прочитан.</returns>
129 /// <returns><c>false</c> - достигнут конец данных, токен не прочитан.</returns>
130 protected bool ReadTokenInternal() {
130 protected bool ReadTokenInternal() {
131 if (m_pointer >= m_bufferSize)
131 if (m_pointer >= m_bufferSize)
132 return false;
132 return false;
133
133
134 m_currentState = m_states[CDFADefinition.INITIAL_STATE];
134 m_currentState = m_states[CDFADefinition.INITIAL_STATE];
135 m_tokenLen = 0;
135 m_tokenLen = 0;
136 m_tokenOffset = m_pointer;
136 m_tokenOffset = m_pointer;
137 int nextState = CDFADefinition.UNREACHEBLE_STATE;
137 int nextState = CDFADefinition.UNREACHEBLE_STATE;
138 do {
138 do {
139 nextState = m_currentState.transitions[m_previewCode];
139 nextState = m_currentState.transitions[m_previewCode];
140 if (nextState == CDFADefinition.UNREACHEBLE_STATE) {
140 if (nextState == CDFADefinition.UNREACHEBLE_STATE) {
141 if (m_currentState.final)
141 if (m_currentState.final)
142 return true;
142 return true;
143 else
143 else
144 throw new ParserException(
144 throw new ParserException(
145 String.Format(
145 String.Format(
146 "Unexpected symbol '{0}', at pos {1}",
146 "Unexpected symbol '{0}', at pos {1}",
147 m_buffer[m_pointer],
147 m_buffer[m_pointer],
148 Position
148 Position
149 )
149 )
150 );
150 );
151 } else {
151 } else {
152 m_currentState = m_states[nextState];
152 m_currentState = m_states[nextState];
153 m_tokenLen++;
153 m_tokenLen++;
154 }
154 }
155
155
156 } while (Shift());
156 } while (Shift());
157
157
158 // END OF DATA
158 // END OF DATA
159 if (!m_currentState.final)
159 if (!m_currentState.final)
160 throw new ParserException("Unexpected end of data");
160 throw new ParserException("Unexpected end of data");
161
161
162 return true;
162 return true;
163 }
163 }
164
164
165
165
166 bool Shift() {
166 bool Shift() {
167 m_pointer++;
167 m_pointer++;
168
168
169 if (m_pointer >= m_bufferSize) {
169 if (m_pointer >= m_bufferSize) {
170 return ReadNextChunk();
170 if (!ReadNextChunk())
171 return false;
171 }
172 }
172
173
173 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
174 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
174
175
175 return true;
176 return true;
176 }
177 }
177
178
178 bool ReadNextChunk() {
179 bool ReadNextChunk() {
179 if (m_reader == null)
180 if (m_reader == null)
180 return false;
181 return false;
181
182
182 // extend buffer if nesessary
183 // extend buffer if nesessary
183 if (m_pointer + m_chunkSize > m_buffer.Length) {
184 if (m_pointer + m_chunkSize > m_buffer.Length) {
184 // trim unused buffer head
185 // trim unused buffer head
185 var size = m_tokenLen + m_chunkSize;
186 var size = m_tokenLen + m_chunkSize;
186 if (size >= m_limit)
187 if (size >= m_limit)
187 throw new ParserException(String.Format("Input buffer {0} bytes limit exceeded", m_limit));
188 throw new ParserException(String.Format("Input buffer {0} bytes limit exceeded", m_limit));
188 var temp = new char[size];
189 var temp = new char[size];
189 Array.Copy(m_buffer, m_tokenOffset, temp, 0, m_tokenLen);
190 Array.Copy(m_buffer, m_tokenOffset, temp, 0, m_tokenLen);
190 m_pointer -= m_tokenOffset;
191 m_pointer -= m_tokenOffset;
191 m_bufferSize -= m_tokenOffset;
192 m_bufferSize -= m_tokenOffset;
192 m_tokenOffset = 0;
193 m_tokenOffset = 0;
193 m_buffer = temp;
194 m_buffer = temp;
194 }
195 }
195
196
196 var read = m_reader.Read(m_buffer, m_tokenLen, m_chunkSize);
197 var read = m_reader.Read(m_buffer, m_tokenLen, m_chunkSize);
197 if (read == 0)
198 if (read == 0)
198 return false;
199 return false;
199
200
200 m_bufferSize += read;
201 m_bufferSize += read;
201
202
202 return true;
203 return true;
203 }
204 }
204
205
205 /// <summary>
206 /// <summary>
206 /// Позиция сканнера во входном буфере
207 /// Позиция сканнера во входном буфере
207 /// </summary>
208 /// </summary>
208 public int Position {
209 public int Position {
209 get {
210 get {
210 return m_pointer + 1;
211 return m_pointer + 1;
211 }
212 }
212 }
213 }
213
214
214 /// <summary>
215 /// <summary>
215 /// Преключает внутренний ДКА на указанный, позволяет реализовать подобие захватывающей
216 /// Преключает внутренний ДКА на указанный, позволяет реализовать подобие захватывающей
216 /// группировки.
217 /// группировки.
217 /// </summary>
218 /// </summary>
218 /// <param name="states">Таблица состояний нового ДКА</param>
219 /// <param name="states">Таблица состояний нового ДКА</param>
219 /// <param name="alphabet">Таблица входных символов для нового ДКА</param>
220 /// <param name="alphabet">Таблица входных символов для нового ДКА</param>
220 protected void Switch(DFAStateDescriptior[] states, int[] alphabet) {
221 protected void Switch(DFAStateDescriptior[] states, int[] alphabet) {
221 Safe.ArgumentNotNull(states, "dfa");
222 Safe.ArgumentNotNull(states, "dfa");
222
223
223 m_defs.Push(new ScannerConfig {
224 m_defs.Push(new ScannerConfig {
224 states = m_states,
225 states = m_states,
225 alphabetMap = m_alphabetMap
226 alphabetMap = m_alphabetMap
226 });
227 });
227
228
228 m_states = states;
229 m_states = states;
229 m_alphabetMap = alphabet;
230 m_alphabetMap = alphabet;
230
231
231 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
232 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
232 }
233 }
233
234
234 /// <summary>
235 /// <summary>
235 /// Восстанавливает предыдущей ДКА сканнера.
236 /// Восстанавливает предыдущей ДКА сканнера.
236 /// </summary>
237 /// </summary>
237 protected void Restore() {
238 protected void Restore() {
238 if (m_defs.Count == 0)
239 if (m_defs.Count == 0)
239 throw new InvalidOperationException();
240 throw new InvalidOperationException();
240 var prev = m_defs.Pop();
241 var prev = m_defs.Pop();
241 m_states = prev.states;
242 m_states = prev.states;
242 m_alphabetMap = prev.alphabetMap;
243 m_alphabetMap = prev.alphabetMap;
243 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
244 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
244 }
245 }
245
246
246 protected override void Dispose(bool disposing) {
247 protected override void Dispose(bool disposing) {
247 if (disposing) {
248 if (disposing) {
248 if (m_reader != null && m_disposeReader)
249 if (m_reader != null && m_disposeReader)
249 m_reader.Dispose();
250 m_reader.Dispose();
250 m_buffer = null;
251 m_buffer = null;
251 m_bufferSize = 0;
252 m_bufferSize = 0;
252 m_pointer = 0;
253 m_pointer = 0;
253 m_tokenLen = 0;
254 m_tokenLen = 0;
254 m_tokenOffset = 0;
255 m_tokenOffset = 0;
255 }
256 }
256 base.Dispose(disposing);
257 base.Dispose(disposing);
257 }
258 }
258 }
259 }
259 }
260 }
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