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1 using System;
2
3 namespace Implab.Automaton.RegularExpressions {
4 public interface ITaggedDFABuilder<TTag> : IDFATableBuilder {
5 void SetStateTag(int s, TTag[] tags);
6 }
7 }
8
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1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4
5 namespace Implab.Automaton.RegularExpressions {
6 public class RegularDFA<TInput, TTag> : DFATable, ITaggedDFABuilder<TTag> {
7
8 readonly Dictionary<int,TTag[]> m_tags = new Dictionary<int, TTag[]>();
9 readonly IAlphabet<TInput> m_alphabet;
10
11 public RegularDFA(IAlphabet<TInput> alphabet) {
12 Safe.ArgumentNotNull(alphabet, "aplhabet");
13
14 m_alphabet = alphabet;
15 }
16
17
18 public IAlphabet<TInput> InputAlphabet {
19 get {
20 return m_alphabet;
21 }
22 }
23
24 public void MarkFinalState(int s, TTag[] tags) {
25 MarkFinalState(s);
26 SetStateTag(s, tags);
27 }
28
29 public void SetStateTag(int s, TTag[] tags) {
30 Safe.ArgumentNotNull(tags, "tags");
31 m_tags[s] = tags;
32 }
33
34 public TTag[] GetStateTag(int s) {
35 TTag[] tags;
36 return m_tags.TryGetValue(s, out tags) ? tags : new TTag[0];
37 }
38
39 public new DFAStateDescriptor<TTag>[] CreateTransitionTable() {
40 var table = new DFAStateDescriptor<TTag>[StateCount];
41
42 foreach (var t in this) {
43 if (table[t.s1].transitions == null)
44 table[t.s1] = new DFAStateDescriptor<TTag>(AlphabetSize, IsFinalState(t.s1), GetStateTag(t.s1));
45 if (table[t.s2].transitions == null)
46 table[t.s2] = new DFAStateDescriptor<TTag>(AlphabetSize, IsFinalState(t.s2), GetStateTag(t.s2));
47 table[t.s1].transitions[t.edge] = t.s2;
48 }
49
50 return table;
51 }
52
53 /// <summary>
54 /// Optimize the specified alphabet.
55 /// </summary>
56 /// <param name="alphabet">Пустой алфавит, который будет зполнен в процессе оптимизации.</param>
57 public RegularDFA<TInput,TTag> Optimize(IAlphabetBuilder<TInput> alphabet) {
58 Safe.ArgumentNotNull(alphabet, "alphabet");
59
60 var dfa = new RegularDFA<TInput, TTag>(alphabet);
61
62 var states = new DummyAlphabet(StateCount);
63 var alphaMap = new Dictionary<int,int>();
64 var stateMap = new Dictionary<int,int>();
65
66 Optimize(dfa, alphaMap, stateMap);
67
68 // mark tags in the new DFA
69 foreach (var g in m_tags.Where(x => x.Key < StateCount).GroupBy(x => stateMap[x.Key], x => x.Value ))
70 dfa.SetStateTag(g.Key, g.SelectMany(x => x).ToArray());
71
72 // make the alphabet for the new DFA
73 foreach (var pair in alphaMap)
74 alphabet.DefineClass(m_alphabet.GetSymbols(pair.Key), pair.Value);
75
76 return dfa;
77 }
78
79 protected override IEnumerable<HashSet<int>> GroupFinalStates() {
80 var arrayComparer = new CustomEqualityComparer<TTag[]>(
81 (x,y) => x.Length == y.Length && x.All(it => y.Contains(it)),
82 x => x.Sum(it => x.GetHashCode())
83 );
84 return FinalStates.GroupBy(x => m_tags[x], arrayComparer).Select(g => new HashSet<int>(g));
85 }
86
87 }
88 }
89
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1 using Implab;
2 using System;
3 using System.Collections.Generic;
4 using System.Diagnostics;
5 using System.Linq;
6
7 namespace Implab.Automaton.RegularExpressions {
8 /// <summary>
9 /// Используется для построения ДКА по регулярному выражению, сначала обходит
10 /// регулярное выражение и вычисляет followpos, затем используется метод
11 /// <see cref="BuildDFA(IDFADefinition)"/> для построения автомата.
12 /// </summary>
13 public class RegularExpressionVisitor<TTag> : IVisitor<TTag> {
14 int m_idx;
15 Token<TTag> m_root;
16 HashSet<int> m_firstpos;
17 HashSet<int> m_lastpos;
18
19 readonly Dictionary<int, HashSet<int>> m_followpos = new Dictionary<int, HashSet<int>>();
20 readonly Dictionary<int, int> m_indexes = new Dictionary<int, int>();
21 readonly Dictionary<int, TTag> m_ends = new Dictionary<int, TTag>();
22
23 public Dictionary<int, HashSet<int>> FollowposMap {
24 get { return m_followpos; }
25 }
26
27 public HashSet<int> Followpos(int pos) {
28 HashSet<int> set;
29 return m_followpos.TryGetValue(pos, out set) ? set : m_followpos[pos] = new HashSet<int>();
30 }
31
32 bool Nullable(object n) {
33 if (n is EmptyToken<TTag> || n is StarToken<TTag>)
34 return true;
35 var altToken = n as AltToken<TTag>;
36 if (altToken != null)
37 return Nullable(altToken.Left) || Nullable(altToken.Right);
38 var catToken = n as CatToken<TTag>;
39 if (catToken != null)
40 return Nullable(catToken.Left) && Nullable(catToken.Right);
41 return false;
42 }
43
44
45 public void Visit(AltToken<TTag> token) {
46 if (m_root == null)
47 m_root = token;
48 var firtspos = new HashSet<int>();
49 var lastpos = new HashSet<int>();
50
51 token.Left.Accept(this);
52 firtspos.UnionWith(m_firstpos);
53 lastpos.UnionWith(m_lastpos);
54
55 token.Right.Accept(this);
56 firtspos.UnionWith(m_firstpos);
57 lastpos.UnionWith(m_lastpos);
58
59 m_firstpos = firtspos;
60 m_lastpos = lastpos;
61 }
62
63 public void Visit(StarToken<TTag> token) {
64 if (m_root == null)
65 m_root = token;
66 token.Token.Accept(this);
67
68 foreach (var i in m_lastpos)
69 Followpos(i).UnionWith(m_firstpos);
70 }
71
72 public void Visit(CatToken<TTag> token) {
73 if (m_root == null)
74 m_root = token;
75
76 var firtspos = new HashSet<int>();
77 var lastpos = new HashSet<int>();
78 token.Left.Accept(this);
79 firtspos.UnionWith(m_firstpos);
80 var leftLastpos = m_lastpos;
81
82 token.Right.Accept(this);
83 lastpos.UnionWith(m_lastpos);
84 var rightFirstpos = m_firstpos;
85
86 if (Nullable(token.Left))
87 firtspos.UnionWith(rightFirstpos);
88
89 if (Nullable(token.Right))
90 lastpos.UnionWith(leftLastpos);
91
92 m_firstpos = firtspos;
93 m_lastpos = lastpos;
94
95 foreach (var i in leftLastpos)
96 Followpos(i).UnionWith(rightFirstpos);
97
98 }
99
100 public void Visit(EmptyToken<TTag> token) {
101 if (m_root == null)
102 m_root = token;
103 }
104
105 public void Visit(SymbolToken<TTag> token) {
106 if (m_root == null)
107 m_root = token;
108 m_idx++;
109 m_indexes[m_idx] = token.Value;
110 m_firstpos = new HashSet<int>(new[] { m_idx });
111 m_lastpos = new HashSet<int>(new[] { m_idx });
112 }
113
114 public void Visit(EndToken<TTag> token) {
115 if (m_root == null)
116 m_root = token;
117 m_idx++;
118 m_indexes[m_idx] = DFAConst.UNCLASSIFIED_INPUT;
119 m_firstpos = new HashSet<int>(new[] { m_idx });
120 m_lastpos = new HashSet<int>(new[] { m_idx });
121 Followpos(m_idx);
122 m_ends.Add(m_idx, token.Tag);
123 }
124
125 public void BuildDFA(ITaggedDFABuilder<TTag> dfa) {
126 Safe.ArgumentNotNull(dfa,"dfa");
127
128 var states = new MapAlphabet<HashSet<int>>(
129 false,
130 new CustomEqualityComparer<HashSet<int>>(
131 (x, y) => x.SetEquals(y),
132 x => x.Sum(n => n.GetHashCode())
133 ));
134
135 var initialState = states.DefineSymbol(m_firstpos);
136 dfa.SetInitialState(initialState);
137
138 var tags = GetStateTags(m_firstpos);
139 if (tags != null && tags.Length > 0)
140 dfa.MarkFinalState(initialState, tags);
141
142 var inputMax = m_indexes.Values.Max();
143 var queue = new Queue<HashSet<int>>();
144
145 queue.Enqueue(m_firstpos);
146
147 while (queue.Count > 0) {
148 var state = queue.Dequeue();
149 var s1 = states.Translate(state);
150 Debug.Assert(s1 != DFAConst.UNCLASSIFIED_INPUT);
151
152 for (int a = 0; a <= inputMax; a++) {
153 var next = new HashSet<int>();
154 foreach (var p in state) {
155 if (m_indexes[p] == a) {
156 next.UnionWith(Followpos(p));
157 }
158 }
159 if (next.Count > 0) {
160 int s2 = states.Translate(next);
161 if (s2 == DFAConst.UNCLASSIFIED_INPUT) {
162 s2 = states.DefineSymbol(next);
163
164 tags = GetStateTags(next);
165 if (tags != null && tags.Length > 0) {
166 dfa.MarkFinalState(s2);
167 dfa.SetStateTag(s2, tags);
168 }
169
170 queue.Enqueue(next);
171 }
172 dfa.Add(new AutomatonTransition(s1, s2, a));
173 }
174 }
175 }
176 }
177
178 TTag[] GetStateTags(IEnumerable<int> state) {
179 Debug.Assert(state != null);
180 return state.Where(m_ends.ContainsKey).Select(pos => m_ends[pos]).ToArray();
181 }
182
183 }
184 }
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1 1 namespace Implab.Automaton {
2 public struct DFAStateDescriptior {
2 public struct DFAStateDescriptor {
3 3 public readonly bool final;
4 4 public readonly int[] transitions;
5 5
6 6
7 public DFAStateDescriptior(int[] transitions, bool final) {
7 public DFAStateDescriptor(int[] transitions, bool final) {
8 8 this.transitions = transitions;
9 9 this.final = final;
10 10 }
11 11
12 public DFAStateDescriptior(int[] transitions) : this(transitions, false) {
12 public DFAStateDescriptor(int[] transitions) : this(transitions, false) {
13 13 }
14 14
15 public DFAStateDescriptior(int size, bool final) {
15 public DFAStateDescriptor(int size, bool final) {
16 16 Safe.ArgumentInRange(size, 0, int.MaxValue, "size");
17 17
18 18 this.final = final;
19 19
20 20 transitions = new int[size];
21 21
22 22 for (int i = 0; i < size; i++)
23 23 transitions[i] = DFAConst.UNREACHABLE_STATE;
24 24 }
25 25 }
26 26 }
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1 1 using Implab;
2 2 using System;
3 3 using System.Collections.Generic;
4 4 using System.Linq;
5 5
6 6 namespace Implab.Automaton {
7 7 public class DFATable : IDFATableBuilder {
8 8 int m_stateCount;
9 9 int m_symbolCount;
10 10 int m_initialState;
11 11
12 12 readonly HashSet<int> m_finalStates = new HashSet<int>();
13 13 readonly HashSet<AutomatonTransition> m_transitions = new HashSet<AutomatonTransition>();
14 14
15 15
16 16 #region IDFADefinition implementation
17 17
18 18 public bool IsFinalState(int s) {
19 19 Safe.ArgumentInRange(s, 0, m_stateCount, "s");
20 20
21 21 return m_finalStates.Contains(s);
22 22 }
23 23
24 24 public IEnumerable<int> FinalStates {
25 25 get {
26 26 return m_finalStates;
27 27 }
28 28 }
29 29
30 30 public int StateCount {
31 31 get { return m_stateCount; }
32 32 }
33 33
34 34 public int AlphabetSize {
35 35 get { return m_symbolCount; }
36 36 }
37 37
38 38 public int InitialState {
39 39 get { return m_initialState; }
40 40 }
41 41
42 42 #endregion
43 43
44 44 public void SetInitialState(int s) {
45 45 Safe.ArgumentAssert(s >= 0, "s");
46 46 m_initialState = s;
47 47 }
48 48
49 49 public void MarkFinalState(int state) {
50 50 m_finalStates.Add(state);
51 51 }
52 52
53 53 public void Add(AutomatonTransition item) {
54 54 Safe.ArgumentAssert(item.s1 >= 0, "item");
55 55 Safe.ArgumentAssert(item.s2 >= 0, "item");
56 56 Safe.ArgumentAssert(item.edge >= 0, "item");
57 57
58 58 m_stateCount = Math.Max(m_stateCount, Math.Max(item.s1, item.s2) + 1);
59 59 m_symbolCount = Math.Max(m_symbolCount, item.edge);
60 60
61 61 m_transitions.Add(item);
62 62 }
63 63
64 64 public void Clear() {
65 65 m_stateCount = 0;
66 66 m_symbolCount = 0;
67 67 m_finalStates.Clear();
68 68 m_transitions.Clear();
69 69 }
70 70
71 71 public bool Contains(AutomatonTransition item) {
72 72 return m_transitions.Contains(item);
73 73 }
74 74
75 75 public void CopyTo(AutomatonTransition[] array, int arrayIndex) {
76 76 m_transitions.CopyTo(array, arrayIndex);
77 77 }
78 78
79 79 public bool Remove(AutomatonTransition item) {
80 80 m_transitions.Remove(item);
81 81 }
82 82
83 83 public int Count {
84 84 get {
85 85 return m_transitions.Count;
86 86 }
87 87 }
88 88
89 89 public bool IsReadOnly {
90 90 get {
91 91 return false;
92 92 }
93 93 }
94 94
95 95 public IEnumerator<AutomatonTransition> GetEnumerator() {
96 96 return m_transitions.GetEnumerator();
97 97 }
98 98
99 99 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
100 100 return GetEnumerator();
101 101 }
102 102
103 public DFAStateDescriptor[] CreateTransitionTable() {
104 var table = new DFAStateDescriptor[StateCount];
105
106 foreach (var t in this) {
107 if (table[t.s1].transitions == null)
108 table[t.s1] = new DFAStateDescriptor(AlphabetSize, IsFinalState(t.s1));
109 if (table[t.s2].transitions == null)
110 table[t.s2] = new DFAStateDescriptor(AlphabetSize, IsFinalState(t.s2));
111 table[t.s1].transitions[t.edge] = t.s2;
112 }
113
114 return table;
115 }
116
103 117 /// <summary>Формирует множества конечных состояний перед началом работы алгоритма минимизации.</summary>
104 118 /// <remarks>
105 119 /// В процессе построения минимального автомата требуется разделить множество состояний,
106 120 /// на два подмножества - конечные состояния и все остальные, после чего эти подмножества
107 121 /// будут резделены на более мелкие. Иногда требуется гарантировать различия конечных сосотяний,
108 122 /// для этого необходимо переопределить даннцю фукнцию, для получения множеств конечных состояний.
109 123 /// </remarks>
110 124 /// <returns>The final states.</returns>
111 125 protected virtual IEnumerable<HashSet<int>> GroupFinalStates() {
112 126 return new HashSet<int>[] { m_finalStates };
113 127 }
114 128
115 129 protected void Optimize(
116 130 IDFATableBuilder optimalDFA,
117 131 IDictionary<int,int> alphabetMap,
118 132 IDictionary<int,int> stateMap
119 133 ) {
120 134 Safe.ArgumentNotNull(optimalDFA, "dfa");
121 135 Safe.ArgumentNotNull(alphabetMap, "alphabetMap");
122 136 Safe.ArgumentNotNull(stateMap, "stateMap");
123 137
124 138
125 139 var setComparer = new CustomEqualityComparer<HashSet<int>>(
126 140 (x, y) => x.SetEquals(y),
127 141 s => s.Sum(x => x.GetHashCode())
128 142 );
129 143
130 144 var optimalStates = new HashSet<HashSet<int>>(setComparer);
131 145 var queue = new HashSet<HashSet<int>>(setComparer);
132 146
133 147 // получаем конечные состояния, сгруппированные по маркерам
134 148 optimalStates.UnionWith(
135 149 GroupFinalStates()
136 150 );
137 151
138 152 var state = new HashSet<int>(
139 153 Enumerable
140 154 .Range(0, m_stateCount - 1)
141 155 .Where(i => !m_finalStates.Contains(i))
142 156 );
143 157
144 158 optimalStates.Add(state);
145 159 queue.Add(state);
146 160
147 161 var rmap = m_transitions
148 162 .GroupBy(t => t.s2)
149 163 .ToLookup(
150 164 g => g.Key, // s2
151 165 g => g.ToLookup(t => t.edge, t => t.s1)
152 166 );
153 167
154 168 while (queue.Count > 0) {
155 169 var stateA = queue.First();
156 170 queue.Remove(stateA);
157 171
158 172 for (int c = 0; c < m_symbolCount; c++) {
159 173 var stateX = new HashSet<int>();
160 174 foreach(var a in stateA)
161 175 stateX.UnionWith(rmap[a][c]); // all states from wich 'c' leads to 'a'
162 176
163 177 foreach (var stateY in optimalStates.ToArray()) {
164 178 if (stateX.Overlaps(stateY) && !stateY.IsSubsetOf(stateX)) {
165 179 var stateR1 = new HashSet<int>(stateY);
166 180 var stateR2 = new HashSet<int>(stateY);
167 181
168 182 stateR1.IntersectWith(stateX);
169 183 stateR2.ExceptWith(stateX);
170 184
171 185 optimalStates.Remove(stateY);
172 186 optimalStates.Add(stateR1);
173 187 optimalStates.Add(stateR2);
174 188
175 189 if (queue.Contains(stateY)) {
176 190 queue.Remove(stateY);
177 191 queue.Add(stateR1);
178 192 queue.Add(stateR2);
179 193 } else {
180 194 queue.Add(stateR1.Count <= stateR2.Count ? stateR1 : stateR2);
181 195 }
182 196 }
183 197 }
184 198 }
185 199 }
186 200
187 201 // карта получения оптимального состояния по соотвествующему ему простому состоянию
188 202 var nextState = 0;
189 203 foreach (var item in optimalStates) {
190 204 var id = nextState++;
191 205 foreach (var s in item)
192 206 stateMap[s] = id;
193 207 }
194 208
195 209 // получаем минимальный алфавит
196 210 // входные символы не различимы, если Move(s,a1) == Move(s,a2), для любого s
197 211 // для этого используем алгоритм кластеризации, сначала
198 212 // считаем, что все символы не различимы
199 213
200 214 var minClasses = new HashSet<HashSet<int>>(setComparer);
201 215 var alphaQueue = new Queue<HashSet<int>>();
202 216 alphaQueue.Enqueue(new HashSet<int>(Enumerable.Range(0,AlphabetSize)));
203 217
204 218 // для всех состояний, будем проверять каждый класс на различимость,
205 219 // т.е. символы различимы, если они приводят к разным состояниям
206 220 for (int s = 0 ; s < optimalStates.Count; s++) {
207 221 var newQueue = new Queue<HashSet<int>>();
208 222
209 223 foreach (var A in alphaQueue) {
210 224 // классы из одного символа делить бесполезно, переводим их сразу в
211 225 // результирующий алфавит
212 226 if (A.Count == 1) {
213 227 minClasses.Add(A);
214 228 continue;
215 229 }
216 230
217 231 // различаем классы символов, которые переводят в различные оптимальные состояния
218 232 // optimalState -> alphaClass
219 233 var classes = new Dictionary<int, HashSet<int>>();
220 234
221 235 foreach (var term in A) {
222 236 // ищем все переходы класса по символу term
223 237 var res = m_transitions.Where(t => stateMap[t.s1] == s && t.edge == term).Select(t => stateMap[t.s2]).ToArray();
224 238
225 239 var s2 = res.Length > 0 ? res[0] : -1;
226 240
227 241 HashSet<int> a2;
228 242 if (!classes.TryGetValue(s2, out a2)) {
229 243 a2 = new HashSet<int>();
230 244 newQueue.Enqueue(a2);
231 245 classes[s2] = a2;
232 246 }
233 247 a2.Add(term);
234 248 }
235 249 }
236 250
237 251 if (newQueue.Count == 0)
238 252 break;
239 253 alphaQueue = newQueue;
240 254 }
241 255
242 256 // после окончания работы алгоритма в очереди останутся минимальные различимые классы
243 257 // входных символов
244 258 foreach (var A in alphaQueue)
245 259 minClasses.Add(A);
246 260
247 261 // построение отображения алфавитов входных символов.
248 262 // поскольку символ DFAConst.UNCLASSIFIED_INPUT может иметь
249 263 // специальное значение, тогда сохраним минимальный класс,
250 264 // содержащий этот символ на томже месте.
251 265
252 266 var nextCls = 0;
253 267 foreach (var item in minClasses) {
254 268 if (nextCls == DFAConst.UNCLASSIFIED_INPUT)
255 269 nextCls++;
256 270
257 271 // сохраняем DFAConst.UNCLASSIFIED_INPUT
258 272 var cls = item.Contains(DFAConst.UNCLASSIFIED_INPUT) ? DFAConst.UNCLASSIFIED_INPUT : nextCls;
259 273
260 274 foreach (var a in item)
261 275 alphabetMap[a] = cls;
262 276
263 277 nextCls++;
264 278 }
265 279
266 280 // построение автомата
267 281 optimalDFA.SetInitialState(stateMap[m_initialState]);
268 282
269 283 foreach (var sf in m_finalStates.Select(s => stateMap[s]).Distinct())
270 284 optimalDFA.MarkFinalState(sf);
271 285
272 286 foreach (var t in m_transitions.Select(t => new AutomatonTransition(stateMap[t.s1],stateMap[t.s2],alphabetMap[t.edge])).Distinct())
273 287 optimalDFA.Add(t);
274 288 }
275 289
276 290 protected void PrintDFA<TInput, TState>(IAlphabet<TInput> inputAlphabet, IAlphabet<TState> stateAlphabet) {
277 291 Safe.ArgumentNotNull(inputAlphabet, "inputAlphabet");
278 292 Safe.ArgumentNotNull(stateAlphabet, "stateAlphabet");
279 293
280 294 foreach(var t in m_transitions)
281 295 Console.WriteLine(
282 296 "[{0}] -{{{1}}}-> [{2}]{3}",
283 297 String.Join(",", stateAlphabet.GetSymbols(t.s1)),
284 298 String.Join("", inputAlphabet.GetSymbols(t.edge)),
285 299 String.Join(",", stateAlphabet.GetSymbols(t.s2)),
286 300 m_finalStates.Contains(t.s2) ? "$" : ""
287 301 );
288 302 }
289 303
290 304 }
291 305 }
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@@ -1,86 +1,94
1 1 using Implab;
2 2 using System;
3 3 using System.Collections.Generic;
4 4 using System.Diagnostics;
5 5 using System.Linq;
6 6
7 7 namespace Implab.Automaton {
8 8 /// <summary>
9 9 /// Indexed alphabet is the finite set of symbols where each symbol has a zero-based unique index.
10 10 /// </summary>
11 11 /// <remarks>
12 12 /// Indexed alphabets are usefull in bulting efficient translations from source alphabet
13 13 /// to the input alphabet of the automaton. It's assumed that the index to the symbol match
14 14 /// is well known and documented.
15 15 /// </remarks>
16 16 public abstract class IndexedAlphabetBase<T> : IAlphabetBuilder<T> {
17 17 int m_nextId = 1;
18 18 readonly int[] m_map;
19 19
20 20 protected IndexedAlphabetBase(int mapSize) {
21 21 m_map = new int[mapSize];
22 22 }
23 23
24 24 protected IndexedAlphabetBase(int[] map) {
25 25 Debug.Assert(map != null && map.Length > 0);
26 26 Debug.Assert(map.All(x => x >= 0));
27 27
28 28 m_map = map;
29 29 m_nextId = map.Max() + 1;
30 30 }
31 31
32 32 public int DefineSymbol(T symbol) {
33 33 var index = GetSymbolIndex(symbol);
34 34 if (m_map[index] == DFAConst.UNCLASSIFIED_INPUT)
35 35 m_map[index] = m_nextId++;
36 36 return m_map[index];
37 37 }
38 38
39 39 public int DefineSymbol(T symbol, int cls) {
40 40 var index = GetSymbolIndex(symbol);
41 41 m_map[index] = cls;
42 42 m_nextId = Math.Max(cls + 1, m_nextId);
43 43 return cls;
44 44 }
45 45
46 46 public int DefineClass(IEnumerable<T> symbols) {
47 47 return DefineClass(symbols, m_nextId);
48 48 }
49 49
50 50 public int DefineClass(IEnumerable<T> symbols, int cls) {
51 51 Safe.ArgumentNotNull(symbols, "symbols");
52 52 symbols = symbols.Distinct();
53 53
54 54 foreach (var symbol in symbols)
55 55 m_map[GetSymbolIndex(symbol)] = cls;
56 56
57 57 m_nextId = Math.Max(cls + 1, m_nextId);
58 58
59 59 return cls;
60 60 }
61 61
62 62 public virtual int Translate(T symbol) {
63 63 return m_map[GetSymbolIndex(symbol)];
64 64 }
65 65
66 66 public int Count {
67 67 get { return m_nextId; }
68 68 }
69 69
70 70 public bool Contains(T symbol) {
71 71 return true;
72 72 }
73 73
74 public IEnumerable<T> GetSymbols(int cls) {
75 for (var i = 0; i < m_map.Length; i++)
76 if (m_map[i] == cls)
77 yield return GetSymbolByIndex(i);
78 }
79
74 80 public abstract int GetSymbolIndex(T symbol);
75 81
82 public abstract T GetSymbolByIndex(int index);
83
76 84 public abstract IEnumerable<T> InputSymbols { get; }
77 85
78 86 /// <summary>
79 87 /// Gets the translation map from the index of the symbol to it's class this is usefull for the optimized input symbols transtaion.
80 88 /// </summary>
81 89 /// <returns>The translation map.</returns>
82 90 public int[] GetTranslationMap() {
83 91 return m_map;
84 92 }
85 93 }
86 94 }
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@@ -1,74 +1,77
1 1 using System;
2 2 using System.Collections.Generic;
3 3 using System.Linq;
4 4
5 5 namespace Implab.Automaton {
6 6 public class MapAlphabet<T> : IAlphabetBuilder<T> {
7 7 readonly Dictionary<T,int> m_map;
8 8 int m_nextCls;
9 9 readonly bool m_supportUnclassified;
10 10
11 11 public MapAlphabet(bool supportUnclassified, IEqualityComparer<T> comparer) {
12 12 m_map = comparer != null ? new Dictionary<T, int>(comparer) : new Dictionary<T,int>();
13 13 m_supportUnclassified = supportUnclassified;
14 14 m_nextCls = supportUnclassified ? 1 : 0;
15 15 }
16 16
17 17 #region IAlphabetBuilder implementation
18 18
19 19 public int DefineSymbol(T symbol) {
20 20 int cls;
21 21 return m_map.TryGetValue(symbol, out cls) ? cls : DefineSymbol(symbol, m_nextCls);
22 22 }
23 23
24 24 public int DefineSymbol(T symbol, int cls) {
25 25 Safe.ArgumentAssert(cls >= 0, "cls");
26 26
27 27 m_nextCls = Math.Max(cls + 1, m_nextCls);
28 28 m_map.Add(symbol, cls);
29 29 return cls;
30 30 }
31 31
32 32 public int DefineClass(IEnumerable<T> symbols) {
33 33 return DefineClass(symbols, m_nextCls);
34 34 }
35 35
36 36 public int DefineClass(IEnumerable<T> symbols, int cls) {
37 37 Safe.ArgumentAssert(cls >= 0, "cls");
38 38 Safe.ArgumentNotNull(symbols, "symbols");
39 39
40 40 m_nextCls = Math.Max(cls + 1, m_nextCls);
41 symbols = symbols.Distinct();
42 41
43 42 foreach (var symbol in symbols)
44 43 m_map[symbol] = cls;
45 44 return cls;
46 45 }
47 46
48 47 #endregion
49 48
50 49 #region IAlphabet implementation
51 50
52 51 public int Translate(T symbol) {
53 52 int cls;
54 53 if (m_map.TryGetValue(symbol, out cls))
55 54 return cls;
56 55 if (!m_supportUnclassified)
57 56 throw new ArgumentOutOfRangeException("symbol", "The specified symbol isn't in the alphabet");
58 57 return DFAConst.UNCLASSIFIED_INPUT;
59 58 }
60 59
61 60 public int Count {
62 61 get {
63 62 return m_nextCls;
64 63 }
65 64 }
66 65
67 66 public bool Contains(T symbol) {
68 67 return m_supportUnclassified || m_map.ContainsKey(symbol);
69 68 }
70 69
70
71 public IEnumerable<T> GetSymbols(int cls) {
72 return m_map.Where(p => p.Value == cls).Select(p => p.Key);
73 }
71 74 #endregion
72 75 }
73 76 }
74 77
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@@ -1,23 +1,23
1 1 using System;
2 2
3 3 namespace Implab.Automaton.RegularExpressions {
4 public struct DFAStateDescriptorT<T> {
4 public struct DFAStateDescriptor<T> {
5 5 public readonly bool final;
6 6
7 7 public readonly int[] transitions;
8 8
9 9 public readonly T[] tags;
10 10
11 public DFAStateDescriptorT(int size, bool final, T[] tags) {
11 public DFAStateDescriptor(int size, bool final, T[] tags) {
12 12 Safe.ArgumentAssert(size >= 0, "size");
13 13 this.final = final;
14 14 this.tags = tags;
15 15
16 16 transitions = new int[size];
17 17
18 18 for (int i = 0; i < size; i++)
19 19 transitions[i] = DFAConst.UNREACHABLE_STATE;
20 20 }
21 21 }
22 22 }
23 23
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@@ -1,91 +1,89
1 1 using Implab;
2 2 using System;
3 3 using System.Collections.Generic;
4 4 using System.Linq;
5 5
6 6 namespace Implab.Automaton.RegularExpressions {
7 7 /// <summary>
8 8 /// Базовый абстрактный класс. Грамматика, позволяет формулировать выражения над алфавитом типа <c>char</c>.
9 9 /// </summary>
10 10 public abstract class Grammar<TSymbol, TTag> {
11 11
12 12 protected abstract IAlphabetBuilder<TSymbol> AlphabetBuilder {
13 13 get;
14 14 }
15 15
16 16 protected SymbolToken<TTag> UnclassifiedToken() {
17 17 return new SymbolToken<TTag>(DFAConst.UNCLASSIFIED_INPUT);
18 18 }
19 19
20 20 protected void DefineAlphabet(IEnumerable<TSymbol> alphabet) {
21 21 Safe.ArgumentNotNull(alphabet, "alphabet");
22 22
23 23 foreach (var ch in alphabet)
24 24 AlphabetBuilder.DefineSymbol(ch);
25 25 }
26 26
27 27 protected Token<TTag> SymbolToken(TSymbol symbol) {
28 28 return Token<TTag>.New(TranslateOrAdd(symbol));
29 29 }
30 30
31 31 protected Token<TTag> SymbolToken(IEnumerable<TSymbol> symbols) {
32 32 Safe.ArgumentNotNull(symbols, "symbols");
33 33
34 34 return Token<TTag>.New(TranslateOrAdd(symbols).ToArray());
35 35 }
36 36
37 37 protected Token<TTag> SymbolSetToken(params TSymbol[] set) {
38 38 return SymbolToken(set);
39 39 }
40 40
41 41 int TranslateOrAdd(TSymbol ch) {
42 42 var t = AlphabetBuilder.Translate(ch);
43 43 if (t == DFAConst.UNCLASSIFIED_INPUT)
44 44 t = AlphabetBuilder.DefineSymbol(ch);
45 45 return t;
46 46 }
47 47
48 48 IEnumerable<int> TranslateOrAdd(IEnumerable<TSymbol> symbols) {
49 49 return symbols.Distinct().Select(TranslateOrAdd);
50 50 }
51 51
52 52 int TranslateOrDie(TSymbol ch) {
53 53 var t = AlphabetBuilder.Translate(ch);
54 54 if (t == DFAConst.UNCLASSIFIED_INPUT)
55 55 throw new ApplicationException(String.Format("Symbol '{0}' is UNCLASSIFIED", ch));
56 56 return t;
57 57 }
58 58
59 59 IEnumerable<int> TranslateOrDie(IEnumerable<TSymbol> symbols) {
60 60 return symbols.Distinct().Select(TranslateOrDie);
61 61 }
62 62
63 63 protected Token<TTag> SymbolTokenExcept(IEnumerable<TSymbol> symbols) {
64 64 Safe.ArgumentNotNull(symbols, "symbols");
65 65
66 66 return Token<TTag>.New( Enumerable.Range(0, AlphabetBuilder.Count).Except(TranslateOrDie(symbols)).ToArray() );
67 67 }
68 68
69 protected void BuildDFA(Token<TTag> lang, IDFATableBuilder<TTag> dfaTable, IAlphabetBuilder<TSymbol> dfaAlphabet) {
70 Safe.ArgumentNotNull(lang, "lang");
71 Safe.ArgumentNotNull(dfaAlphabet, "dfaAlphabet");
72
73 var dfa = new RegularDFADefinition<TSymbol, TTag>(AlphabetBuilder);
69 protected abstract IAlphabetBuilder<TSymbol> CreateAlphabet();
74 70
75 var builder = new RegularDFABuilder<TTag>();
71 protected RegularDFA<TSymbol, TTag> BuildDFA(Token<TTag> regexp) {
72
73 var dfa = new RegularDFA<TSymbol, TTag>(AlphabetBuilder);
76 74
77 lang.Accept( builder );
75 var visitor = new RegularExpressionVisitor<TTag>();
76 regexp.Accept( visitor );
78 77
79 builder.BuildDFA(dfa);
78 visitor.BuildDFA(dfa);
80 79
81 80 if (dfa.IsFinalState(dfa.InitialState))
82 81 throw new ApplicationException("The specified language contains empty token");
83 82
84 dfa.Optimize(dfaTable, dfaAlphabet);
85
83 return dfa.Optimize(CreateAlphabet());
86 84 }
87 85
88 86 }
89 87
90 88
91 89 }
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@@ -1,265 +1,255
1 1 using Implab;
2 2 using System;
3 3 using System.Collections.Generic;
4 4 using System.IO;
5 5 using Implab.Components;
6 using Implab.Automaton.RegularExpressions;
6 7
7 8 namespace Implab.Automaton {
8 9 /// <summary>
9 10 /// Базовый класс для разбора потока входных символов на токены.
10 11 /// </summary>
11 12 /// <remarks>
12 13 /// Сканнер имеет внутри буффер с симолами входного текста, по которому перемещаются два
13 14 /// указателя, начала и конца токена, при перемещении искользуется ДКА для определения
14 15 /// конца токена и допустимости текущего символа.
15 16 /// </remarks>
16 17 public abstract class Scanner<TTag> : Disposable {
17 struct ScannerConfig {
18 public DFAStateDescriptior<TTag>[] states;
19 public int[] alphabetMap;
20 public int initialState;
18 protected struct ScannerConfig {
19 public readonly DFAStateDescriptor<TTag>[] states;
20 public readonly int[] alphabet;
21 public readonly int initialState;
22
23 public ScannerConfig(DFAStateDescriptor<TTag>[] states, int[] alphabet, int initialState) {
24 this.initialState = initialState;
25 this.alphabet = alphabet;
26 this.states = states;
27 }
21 28 }
22 29
23 30 Stack<ScannerConfig> m_defs = new Stack<ScannerConfig>();
24 31
25 DFAStateDescriptior<TTag>[] m_states;
26 int[] m_alphabetMap;
27 int m_initialState;
32 ScannerConfig m_config;
28 33
29 protected DFAStateDescriptior<TTag> m_currentState;
34 protected DFAStateDescriptor<TTag> m_currentState;
30 35 int m_previewCode;
31 36
32 37 protected int m_tokenLen;
33 38 protected int m_tokenOffset;
34 39
35 40 protected char[] m_buffer;
36 41 protected int m_bufferSize;
37 42 protected int m_pointer;
38 43
39 44 TextReader m_reader;
40 45 bool m_disposeReader;
41 46 int m_chunkSize = 1024; // 1k
42 47 int m_limit = 10 * 1024 * 1024; // 10Mb
43 48
44 protected Scanner(DFAStateDescriptior<TTag>[] states, int[] alphabet, int initialState) {
45 Safe.ArgumentNotEmpty(states, "states");
46 Safe.ArgumentNotNull(alphabet, "alphabet");
49 protected Scanner(ScannerConfig config) {
50 Safe.ArgumentNotEmpty(config.states, "config.states");
51 Safe.ArgumentNotNull(config.alphabet, "config.alphabet");
47 52
48 m_states = states;
49 m_alphabetMap = alphabet;
50 m_initialState = initialState;
51
52 Feed(new char[0]);
53 m_config = config;
53 54 }
54 55
55 56 /// <summary>
56 57 /// Заполняет входными данными буффер.
57 58 /// </summary>
58 59 /// <param name="data">Данные для обработки.</param>
59 60 /// <remarks>Копирование данных не происходит, переданный массив используется в
60 61 /// качестве входного буффера.</remarks>
61 62 public void Feed(char[] data) {
62 63 Safe.ArgumentNotNull(data, "data");
63 64
64 65 Feed(data, data.Length);
65 66 }
66 67
67 68 /// <summary>
68 69 /// Заполняет буффур чтения входными данными.
69 70 /// </summary>
70 71 /// <param name="data">Данные для обработки.</param>
71 72 /// <param name="length">Длина данных для обработки.</param>
72 73 /// <remarks>Копирование данных не происходит, переданный массив используется в
73 74 /// качестве входного буффера.</remarks>
74 75 public void Feed(char[] data, int length) {
75 76 Safe.ArgumentNotNull(data, "data");
76 77 Safe.ArgumentInRange(length, 0, data.Length, "length");
77 78 AssertNotDisposed();
78 79
79 80 m_pointer = -1;
80 81 m_buffer = data;
81 82 m_bufferSize = length;
82 83 Shift();
83 84 }
84 85
85 86 public void Feed(TextReader reader, bool dispose) {
86 87 Safe.ArgumentNotNull(reader, "reader");
87 88 AssertNotDisposed();
88 89
89 90 if (m_reader != null && m_disposeReader)
90 91 m_reader.Dispose();
91 92
92 93 m_reader = reader;
93 94 m_disposeReader = dispose;
94 95 m_pointer = -1;
95 96 m_buffer = new char[m_chunkSize];
96 97 m_bufferSize = 0;
97 98 Shift();
98 99 }
99 100
100 101 /// <summary>
101 102 /// Получает текущий токен в виде строки.
102 103 /// </summary>
103 104 /// <returns></returns>
104 105 protected string GetTokenValue() {
105 106 return new String(m_buffer, m_tokenOffset, m_tokenLen);
106 107 }
107 108
108 109 /// <summary>
109 110 /// Метки текущего токена, которые были назначены в регулярном выражении.
110 111 /// </summary>
111 112 protected TTag[] TokenTags {
112 113 get {
113 return m_currentState.tag;
114 return m_currentState.tags;
114 115 }
115 116 }
116 117
117 118 /// <summary>
118 119 /// Признак конца данных
119 120 /// </summary>
120 121 public bool EOF {
121 122 get {
122 123 return m_pointer >= m_bufferSize;
123 124 }
124 125 }
125 126
126 127 /// <summary>
127 128 /// Читает следующий токен, при этом <see cref="m_tokenOffset"/> указывает на начало токена,
128 129 /// <see cref="m_tokenLen"/> на длину токена, <see cref="m_buffer"/> - массив символов, в
129 130 /// котором находится токен.
130 131 /// </summary>
131 132 /// <returns><c>false</c> - достигнут конец данных, токен не прочитан.</returns>
132 133 protected bool ReadTokenInternal() {
133 134 if (m_pointer >= m_bufferSize)
134 135 return false;
135 136
136 m_currentState = m_states[m_initialState];
137 m_currentState = m_config.states[m_config.initialState];
137 138 m_tokenLen = 0;
138 139 m_tokenOffset = m_pointer;
139 140 int nextState;
140 141 do {
141 142 nextState = m_currentState.transitions[m_previewCode];
142 143 if (nextState == DFAConst.UNREACHABLE_STATE) {
143 144 if (m_currentState.final)
144 145 return true;
145 146
146 147 throw new ParserException(
147 148 String.Format(
148 149 "Unexpected symbol '{0}', at pos {1}",
149 150 m_buffer[m_pointer],
150 151 Position
151 152 )
152 153 );
153 154 }
154 m_currentState = m_states[nextState];
155 m_currentState = m_config.states[nextState];
155 156 m_tokenLen++;
156 157
157 158 } while (Shift());
158 159
159 160 // END OF DATA
160 161 if (!m_currentState.final)
161 162 throw new ParserException("Unexpected end of data");
162 163
163 164 return true;
164 165 }
165 166
166 167
167 168 bool Shift() {
168 169 m_pointer++;
169 170
170 171 if (m_pointer >= m_bufferSize) {
171 172 if (!ReadNextChunk())
172 173 return false;
173 174 }
174 175
175 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
176 m_previewCode = m_config.alphabet[m_buffer[m_pointer]];
176 177
177 178 return true;
178 179 }
179 180
180 181 bool ReadNextChunk() {
181 182 if (m_reader == null)
182 183 return false;
183 184
184 185 // extend buffer if nesessary
185 186 if (m_pointer + m_chunkSize > m_buffer.Length) {
186 187 // trim unused buffer head
187 188 var size = m_tokenLen + m_chunkSize;
188 189 if (size >= m_limit)
189 190 throw new ParserException(String.Format("Input buffer {0} bytes limit exceeded", m_limit));
190 191 var temp = new char[size];
191 192 Array.Copy(m_buffer, m_tokenOffset, temp, 0, m_tokenLen);
192 193 m_pointer -= m_tokenOffset;
193 194 m_bufferSize -= m_tokenOffset;
194 195 m_tokenOffset = 0;
195 196 m_buffer = temp;
196 197 }
197 198
198 199 var read = m_reader.Read(m_buffer, m_tokenLen, m_chunkSize);
199 200 if (read == 0)
200 201 return false;
201 202
202 203 m_bufferSize += read;
203 204
204 205 return true;
205 206 }
206 207
207 208 /// <summary>
208 209 /// Позиция сканнера во входном буфере
209 210 /// </summary>
210 211 public int Position {
211 212 get {
212 213 return m_pointer + 1;
213 214 }
214 215 }
215 216
216 217 /// <summary>
217 218 /// Преключает внутренний ДКА на указанный, позволяет реализовать подобие захватывающей
218 219 /// группировки.
219 220 /// </summary>
220 /// <param name="states">Таблица состояний нового ДКА</param>
221 /// <param name="alphabet">Таблица входных символов для нового ДКА</param>
222 /// <param name = "initialState"></param>
223 protected void Switch(DFAStateDescriptior<TTag>[] states, int[] alphabet, int initialState) {
224 Safe.ArgumentNotNull(states, "dfa");
221 /// <param name = "config"></param>
222 protected void Switch(ScannerConfig config) {
223 Safe.ArgumentNotNull(config.states, "config.states");
225 224
226 m_defs.Push(new ScannerConfig {
227 states = m_states,
228 alphabetMap = m_alphabetMap,
229 initialState = m_initialState
230 });
225 m_defs.Push(m_config);
226 m_config = config;
231 227
232 m_states = states;
233 m_alphabetMap = alphabet;
234 m_initialState = initialState;
235
236 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
228 m_previewCode = m_config.alphabet[m_buffer[m_pointer]];
237 229 }
238 230
239 231 /// <summary>
240 232 /// Восстанавливает предыдущей ДКА сканнера.
241 233 /// </summary>
242 234 protected void Restore() {
243 235 if (m_defs.Count == 0)
244 236 throw new InvalidOperationException();
245 var prev = m_defs.Pop();
246 m_states = prev.states;
247 m_alphabetMap = prev.alphabetMap;
248 m_initialState = prev.initialState;
249 m_previewCode = m_alphabetMap[m_buffer[m_pointer]];
237 m_config = m_defs.Pop();
238
239 m_previewCode = m_config.alphabet[m_buffer[m_pointer]];
250 240 }
251 241
252 242 protected override void Dispose(bool disposing) {
253 243 if (disposing) {
254 244 if (m_reader != null && m_disposeReader)
255 245 m_reader.Dispose();
256 246 m_buffer = null;
257 247 m_bufferSize = 0;
258 248 m_pointer = 0;
259 249 m_tokenLen = 0;
260 250 m_tokenOffset = 0;
261 251 }
262 252 base.Dispose(disposing);
263 253 }
264 254 }
265 255 }
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@@ -1,25 +1,29
1 1 using System.Collections.Generic;
2 2 using System.Linq;
3 3 using Implab.Automaton;
4 4
5 5 namespace Implab.Formats {
6 6 public class ByteAlphabet : IndexedAlphabetBase<byte> {
7 7 public ByteAlphabet() : base(byte.MaxValue + 1){
8 8 }
9 9
10 10 #region implemented abstract members of IndexedAlphabetBase
11 11
12 12 public override int GetSymbolIndex(byte symbol) {
13 13 return (int)symbol;
14 14 }
15 15
16 public override byte GetSymbolByIndex(int index) {
17 return (byte)index;
18 }
19
16 20 public IEnumerable<byte> InputSymbols {
17 21 get {
18 22 return Enumerable.Range(byte.MinValue, byte.MaxValue).Cast<byte>();
19 23 }
20 24 }
21 25
22 26 #endregion
23 27 }
24 28 }
25 29
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@@ -1,20 +1,24
1 1 using System.Collections.Generic;
2 2 using System.Linq;
3 3 using Implab.Automaton;
4 4
5 5 namespace Implab.Formats {
6 6 public class CharAlphabet: IndexedAlphabetBase<char> {
7 7
8 8 public CharAlphabet()
9 9 : base(char.MaxValue + 1) {
10 10 }
11 11
12 12 public override int GetSymbolIndex(char symbol) {
13 13 return symbol;
14 14 }
15 15
16 public override char GetSymbolByIndex(int index) {
17 return (char)index;
18 }
19
16 20 public override IEnumerable<char> InputSymbols {
17 21 get { return Enumerable.Range(char.MinValue, char.MaxValue).Cast<char>(); }
18 22 }
19 23 }
20 24 }
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@@ -1,115 +1,116
1 1 using System.Linq;
2 2 using Implab.Automaton.RegularExpressions;
3 3 using System;
4 using Implab.Automaton;
4 5
5 6 namespace Implab.Formats.JSON {
6 7 class JSONGrammar : Grammar<char,JSONGrammar.TokenType> {
7 8 public enum TokenType {
8 9 None,
9 10 BeginObject,
10 11 EndObject,
11 12 BeginArray,
12 13 EndArray,
13 14 String,
14 15 Number,
15 16 Literal,
16 17 NameSeparator,
17 18 ValueSeparator,
18 19
19 20 StringBound,
20 21 EscapedChar,
21 22 UnescapedChar,
22 23 EscapedUnicode,
23 24
24 25 Minus,
25 26 Plus,
26 27 Sign,
27 28 Integer,
28 29 Dot,
29 30 Exp
30 31 }
31 32
32 33 static Lazy<JSONGrammar> _instance = new Lazy<JSONGrammar>();
33 34
34 35 public static JSONGrammar Instance {
35 36 get { return _instance.Value; }
36 37 }
37 38
38 readonly RegularCharDFADefinition<TokenType> m_jsonDFA;
39 readonly RegularCharDFADefinition<TokenType> m_stringDFA;
39 readonly RegularDFA<char, TokenType> m_jsonDFA;
40 readonly RegularDFA<char, TokenType> m_stringDFA;
40 41
41 42 public JSONGrammar() {
42 43 DefineAlphabet(Enumerable.Range(0, 0x20).Select(x => (char)x));
43 44 var hexDigit = SymbolRangeToken('a','f').Or(SymbolRangeToken('A','F')).Or(SymbolRangeToken('0','9'));
44 45 var digit9 = SymbolRangeToken('1', '9');
45 46 var zero = SymbolToken('0');
46 47 var digit = zero.Or(digit9);
47 48 var dot = SymbolToken('.');
48 49 var minus = SymbolToken('-');
49 50 var sign = SymbolSetToken('-', '+');
50 51 var expSign = SymbolSetToken('e', 'E');
51 52 var letters = SymbolRangeToken('a', 'z');
52 53 var integer = zero.Or(digit9.Cat(digit.EClosure()));
53 54 var frac = dot.Cat(digit.Closure());
54 55 var exp = expSign.Cat(sign.Optional()).Cat(digit.Closure());
55 56 var quote = SymbolToken('"');
56 57 var backSlash = SymbolToken('\\');
57 58 var specialEscapeChars = SymbolSetToken('\\', '"', '/', 'b', 'f', 't', 'n', 'r');
58 59 var unicodeEspace = SymbolToken('u').Cat(hexDigit.Repeat(4));
59 60 var whitespace = SymbolSetToken('\n', '\r', '\t', ' ').EClosure();
60 61 var beginObject = whitespace.Cat(SymbolToken('{')).Cat(whitespace);
61 62 var endObject = whitespace.Cat(SymbolToken('}')).Cat(whitespace);
62 63 var beginArray = whitespace.Cat(SymbolToken('[')).Cat(whitespace);
63 64 var endArray = whitespace.Cat(SymbolToken(']')).Cat(whitespace);
64 65 var nameSep = whitespace.Cat(SymbolToken(':')).Cat(whitespace);
65 66 var valueSep = whitespace.Cat(SymbolToken(',')).Cat(whitespace);
66 67
67 68 var number = minus.Optional().Cat(integer).Cat(frac.Optional()).Cat(exp.Optional());
68 69 var literal = letters.Closure();
69 70 var unescaped = SymbolTokenExcept(Enumerable.Range(0, 0x20).Union(new int[] { '\\', '"' }).Select(x => (char)x));
70 71
71 72 var jsonExpression =
72 73 number.Tag(TokenType.Number)
73 74 .Or(literal.Tag(TokenType.Literal))
74 75 .Or(quote.Tag(TokenType.StringBound))
75 76 .Or(beginObject.Tag(TokenType.BeginObject))
76 77 .Or(endObject.Tag(TokenType.EndObject))
77 78 .Or(beginArray.Tag(TokenType.BeginArray))
78 79 .Or(endArray.Tag(TokenType.EndArray))
79 80 .Or(nameSep.Tag(TokenType.NameSeparator))
80 81 .Or(valueSep.Tag(TokenType.ValueSeparator));
81 82
82 83
83 84 var jsonStringExpression =
84 85 quote.Tag(TokenType.StringBound)
85 86 .Or(backSlash.Cat(specialEscapeChars).Tag(TokenType.EscapedChar))
86 87 .Or(backSlash.Cat(unicodeEspace).Tag(TokenType.EscapedUnicode))
87 88 .Or(unescaped.Closure().Tag(TokenType.UnescapedChar));
88 89
89 90
90 m_jsonDFA = new RegularCharDFADefinition<TokenType>(new CharAlphabet());
91 BuildDFA(jsonExpression, m_jsonDFA, m_jsonDFA.InputAlphabet);
92
93
94 m_stringDFA = new RegularCharDFADefinition<TokenType>(new CharAlphabet());
95 BuildDFA(jsonStringExpression, m_jsonDFA, m_jsonDFA.InputAlphabet);
91 m_jsonDFA = BuildDFA(jsonExpression);
92 m_stringDFA = BuildDFA(jsonStringExpression);
96 93 }
97 94
98 public RegularCharDFADefinition<TokenType> JsonDFA {
95 public RegularDFA<char, TokenType> JsonDFA {
99 96 get {
100 97 return m_jsonDFA;
101 98 }
102 99 }
103 100
104 public RegularDFADefinition<char,TokenType> JsonStringDFA {
101 public RegularDFA<char,TokenType> JsonStringDFA {
105 102 get {
106 103 return m_stringDFA;
107 104 }
108 105 }
109 106
110 107 Token<TokenType> SymbolRangeToken(char start, char stop) {
111 108 return SymbolToken(Enumerable.Range(start,stop - start).Cast<char>());
112 109 }
110
111 protected override IAlphabetBuilder<char> CreateAlphabet() {
112 return new CharAlphabet();
113 }
113 114
114 115 }
115 116 }
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@@ -1,280 +1,280
1 1 using System;
2 2 using System.Diagnostics;
3 3 using System.IO;
4 4 using Implab.Automaton;
5 5 using Implab.Automaton.RegularExpressions;
6 6 using System.Linq;
7 7 using Implab.Components;
8 8
9 9 namespace Implab.Formats.JSON {
10 10 /// <summary>
11 11 /// internal
12 12 /// </summary>
13 13 public struct JSONParserContext {
14 14 public string memberName;
15 15 public JSONElementContext elementContext;
16 16 }
17 17
18 18 /// <summary>
19 19 /// Pull парсер JSON данных.
20 20 /// </summary>
21 21 /// <remarks>
22 22 /// Следует отметить отдельную интерпретацию свойства <see cref="Level"/>,
23 23 /// оно означает текущий уровень вложенности объектов, однако закрывающий
24 24 /// элемент объекта и массива имеет уровень меньше, чем сам объект.
25 25 /// <code>
26 26 /// { // Level = 1
27 27 /// "name" : "Peter", // Level = 1
28 28 /// "address" : { // Level = 2
29 29 /// city : "Stern" // Level = 2
30 30 /// } // Level = 1
31 31 /// } // Level = 0
32 32 /// </code>
33 33 /// </remarks>
34 34 public class JSONParser : Disposable {
35 35
36 36 enum MemberContext {
37 37 MemberName,
38 38 MemberValue
39 39 }
40 40
41 41 struct ParserContext {
42 42 DFAStateDescriptior<object>
43 43 }
44 44
45 45 static readonly EnumAlphabet<JsonTokenType> _alphabet = EnumAlphabet<JsonTokenType>.FullAlphabet;
46 46 static readonly DFAStateDescriptior<object>[] _jsonDFA;
47 47 static readonly int _jsonDFAInitialState;
48 48 static readonly DFAStateDescriptior<object>[] _objectDFA;
49 49 static readonly int _objectDFAInitialState;
50 50 static readonly DFAStateDescriptior<object>[] _arrayDFA;
51 51 static readonly int _arrayDFAInitialState;
52 52
53 53 static JSONParser() {
54 54
55 55
56 56 var valueExpression = Token(JsonTokenType.BeginArray, JsonTokenType.BeginObject, JsonTokenType.Literal, JsonTokenType.Number, JsonTokenType.String);
57 57 var memberExpression = Token(JsonTokenType.String).Cat(Token(JsonTokenType.NameSeparator)).Cat(valueExpression);
58 58
59 59 var objectExpression = memberExpression
60 60 .Cat(
61 61 Token(JsonTokenType.ValueSeparator)
62 62 .Cat(memberExpression)
63 63 .EClosure()
64 64 )
65 65 .Optional()
66 66 .Cat(Token(JsonTokenType.EndObject))
67 67 .Tag(null);
68 68 var arrayExpression = valueExpression
69 69 .Cat(
70 70 Token(JsonTokenType.ValueSeparator)
71 71 .Cat(valueExpression)
72 72 .EClosure()
73 73 )
74 74 .Optional()
75 75 .Cat(Token(JsonTokenType.EndArray))
76 76 .Tag(null);
77 77
78 78 var jsonExpression = valueExpression.Tag(null);
79 79
80 80 _jsonDFA = CreateDFA(jsonExpression).GetTransitionTable();
81 81 _objectDFA = CreateDFA(objectExpression).GetTransitionTable();
82 82 _arrayDFA = CreateDFA(arrayExpression).GetTransitionTable();
83 83 }
84 84
85 85 static Token<object> Token(params JsonTokenType[] input) {
86 86 return Token<object>.New(input.Select(t => _alphabet.Translate(t)).ToArray());
87 87 }
88 88
89 static RegularDFADefinition<JsonTokenType,object> CreateDFA(Token<object> expr) {
90 var builder = new RegularDFABuilder<object>();
91 var dfa = new RegularDFADefinition<JsonTokenType,object>(_alphabet);
89 static RegularDFA<JsonTokenType,object> CreateDFA(Token<object> expr) {
90 var builder = new RegularExpressionVisitor<object>();
91 var dfa = new RegularDFA<JsonTokenType,object>(_alphabet);
92 92
93 93 expr.Accept(builder);
94 94
95 95 builder.BuildDFA(dfa);
96 96 return dfa;
97 97 }
98 98
99 99 JSONScanner m_scanner;
100 100 MemberContext m_memberContext;
101 101
102 102 JSONElementType m_elementType;
103 103 object m_elementValue;
104 104
105 105 /// <summary>
106 106 /// Создает новый парсер на основе строки, содержащей JSON
107 107 /// </summary>
108 108 /// <param name="text"></param>
109 109 public JSONParser(string text)
110 110 : base(_jsonDFA, INITIAL_STATE, new JSONParserContext { elementContext = JSONElementContext.None, memberName = String.Empty }) {
111 111 Safe.ArgumentNotEmpty(text, "text");
112 112 m_scanner = new JSONScanner();
113 113 m_scanner.Feed(text.ToCharArray());
114 114 }
115 115
116 116 /// <summary>
117 117 /// Создает новый экземпляр парсера, на основе текстового потока.
118 118 /// </summary>
119 119 /// <param name="reader">Текстовый поток.</param>
120 120 /// <param name="dispose">Признак того, что парсер должен конролировать время жизни входного потока.</param>
121 121 public JSONParser(TextReader reader, bool dispose)
122 122 : base(_jsonDFA, INITIAL_STATE, new JSONParserContext { elementContext = JSONElementContext.None, memberName = String.Empty }) {
123 123 Safe.ArgumentNotNull(reader, "reader");
124 124 m_scanner = new JSONScanner();
125 125 m_scanner.Feed(reader, dispose);
126 126 }
127 127
128 128 /// <summary>
129 129 /// Тип текущего элемента на котором стоит парсер.
130 130 /// </summary>
131 131 public JSONElementType ElementType {
132 132 get { return m_elementType; }
133 133 }
134 134
135 135 /// <summary>
136 136 /// Имя элемента - имя свойства родительского контейнера. Для элементов массивов и корневого всегда
137 137 /// пустая строка.
138 138 /// </summary>
139 139 public string ElementName {
140 140 get { return m_context.info.memberName; }
141 141 }
142 142
143 143 /// <summary>
144 144 /// Значение элемента. Только для элементов типа <see cref="JSONElementType.Value"/>, для остальных <c>null</c>
145 145 /// </summary>
146 146 public object ElementValue {
147 147 get { return m_elementValue; }
148 148 }
149 149
150 150 /// <summary>
151 151 /// Читает слеюудущий объект из потока
152 152 /// </summary>
153 153 /// <returns><c>true</c> - операция чтения прошла успешно, <c>false</c> - конец данных</returns>
154 154 public bool Read() {
155 155 if (m_context.current == UNREACHEBLE_STATE)
156 156 throw new InvalidOperationException("The parser is in invalid state");
157 157 object tokenValue;
158 158 JsonTokenType tokenType;
159 159 m_context.info.memberName = String.Empty;
160 160 while (m_scanner.ReadToken(out tokenValue, out tokenType)) {
161 161 Move((int)tokenType);
162 162 if (m_context.current == UNREACHEBLE_STATE)
163 163 UnexpectedToken(tokenValue, tokenType);
164 164 switch (tokenType) {
165 165 case JsonTokenType.BeginObject:
166 166 Switch(
167 167 _objectDFA,
168 168 INITIAL_STATE,
169 169 new JSONParserContext {
170 170 memberName = m_context.info.memberName,
171 171 elementContext = JSONElementContext.Object
172 172 }
173 173 );
174 174 m_elementValue = null;
175 175 m_memberContext = MemberContext.MemberName;
176 176 m_elementType = JSONElementType.BeginObject;
177 177 return true;
178 178 case JsonTokenType.EndObject:
179 179 Restore();
180 180 m_elementValue = null;
181 181 m_elementType = JSONElementType.EndObject;
182 182 return true;
183 183 case JsonTokenType.BeginArray:
184 184 Switch(
185 185 _arrayDFA,
186 186 INITIAL_STATE,
187 187 new JSONParserContext {
188 188 memberName = m_context.info.memberName,
189 189 elementContext = JSONElementContext.Array
190 190 }
191 191 );
192 192 m_elementValue = null;
193 193 m_memberContext = MemberContext.MemberValue;
194 194 m_elementType = JSONElementType.BeginArray;
195 195 return true;
196 196 case JsonTokenType.EndArray:
197 197 Restore();
198 198 m_elementValue = null;
199 199 m_elementType = JSONElementType.EndArray;
200 200 return true;
201 201 case JsonTokenType.String:
202 202 if (m_memberContext == MemberContext.MemberName) {
203 203 m_context.info.memberName = (string)tokenValue;
204 204 break;
205 205 }
206 206 m_elementType = JSONElementType.Value;
207 207 m_elementValue = tokenValue;
208 208 return true;
209 209 case JsonTokenType.Number:
210 210 m_elementType = JSONElementType.Value;
211 211 m_elementValue = tokenValue;
212 212 return true;
213 213 case JsonTokenType.Literal:
214 214 m_elementType = JSONElementType.Value;
215 215 m_elementValue = ParseLiteral((string)tokenValue);
216 216 return true;
217 217 case JsonTokenType.NameSeparator:
218 218 m_memberContext = MemberContext.MemberValue;
219 219 break;
220 220 case JsonTokenType.ValueSeparator:
221 221 m_memberContext = m_context.info.elementContext == JSONElementContext.Object ? MemberContext.MemberName : MemberContext.MemberValue;
222 222 break;
223 223 default:
224 224 UnexpectedToken(tokenValue, tokenType);
225 225 break;
226 226 }
227 227 }
228 228 if (m_context.info.elementContext != JSONElementContext.None)
229 229 throw new ParserException("Unexpedted end of data");
230 230 return false;
231 231 }
232 232
233 233 object ParseLiteral(string literal) {
234 234 switch (literal) {
235 235 case "null":
236 236 return null;
237 237 case "false":
238 238 return false;
239 239 case "true":
240 240 return true;
241 241 default:
242 242 UnexpectedToken(literal, JsonTokenType.Literal);
243 243 return null; // avoid compliler error
244 244 }
245 245 }
246 246
247 247 void UnexpectedToken(object value, JsonTokenType tokenType) {
248 248 throw new ParserException(String.Format("Unexpected token {0}: '{1}'", tokenType, value));
249 249 }
250 250
251 251
252 252 /// <summary>
253 253 /// Признак конца потока
254 254 /// </summary>
255 255 public bool EOF {
256 256 get {
257 257 return m_scanner.EOF;
258 258 }
259 259 }
260 260
261 261 protected override void Dispose(bool disposing) {
262 262 if (disposing) {
263 263 m_scanner.Dispose();
264 264 }
265 265 }
266 266
267 267 /// <summary>
268 268 /// Переходит в конец текущего объекта.
269 269 /// </summary>
270 270 public void SeekElementEnd() {
271 271 var level = Level - 1;
272 272
273 273 Debug.Assert(level >= 0);
274 274
275 275 while (Level != level)
276 276 Read();
277 277 }
278 278 }
279 279
280 280 }
Show file before | Show file after | Hide comments
@@ -1,272 +1,272
1 1 <?xml version="1.0" encoding="utf-8"?>
2 2 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
3 3 <PropertyGroup>
4 4 <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
5 5 <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
6 6 <ProjectGuid>{F550F1F8-8746-4AD0-9614-855F4C4B7F05}</ProjectGuid>
7 7 <OutputType>Library</OutputType>
8 8 <RootNamespace>Implab</RootNamespace>
9 9 <AssemblyName>Implab</AssemblyName>
10 10 <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
11 11 <ReleaseVersion>0.2</ReleaseVersion>
12 12 <ProductVersion>8.0.30703</ProductVersion>
13 13 <SchemaVersion>2.0</SchemaVersion>
14 14 </PropertyGroup>
15 15 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
16 16 <DebugSymbols>true</DebugSymbols>
17 17 <DebugType>full</DebugType>
18 18 <Optimize>false</Optimize>
19 19 <OutputPath>bin\Debug</OutputPath>
20 20 <DefineConstants>TRACE;DEBUG;</DefineConstants>
21 21 <ErrorReport>prompt</ErrorReport>
22 22 <WarningLevel>4</WarningLevel>
23 23 <ConsolePause>false</ConsolePause>
24 24 <RunCodeAnalysis>true</RunCodeAnalysis>
25 25 </PropertyGroup>
26 26 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
27 27 <DebugType>full</DebugType>
28 28 <Optimize>true</Optimize>
29 29 <OutputPath>bin\Release</OutputPath>
30 30 <ErrorReport>prompt</ErrorReport>
31 31 <WarningLevel>4</WarningLevel>
32 32 <ConsolePause>false</ConsolePause>
33 33 </PropertyGroup>
34 34 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug 4.5|AnyCPU' ">
35 35 <DebugSymbols>true</DebugSymbols>
36 36 <DebugType>full</DebugType>
37 37 <Optimize>false</Optimize>
38 38 <OutputPath>bin\Debug</OutputPath>
39 39 <DefineConstants>TRACE;DEBUG;NET_4_5</DefineConstants>
40 40 <ErrorReport>prompt</ErrorReport>
41 41 <WarningLevel>4</WarningLevel>
42 42 <RunCodeAnalysis>true</RunCodeAnalysis>
43 43 <ConsolePause>false</ConsolePause>
44 44 </PropertyGroup>
45 45 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release 4.5|AnyCPU' ">
46 46 <Optimize>true</Optimize>
47 47 <OutputPath>bin\Release</OutputPath>
48 48 <ErrorReport>prompt</ErrorReport>
49 49 <WarningLevel>4</WarningLevel>
50 50 <ConsolePause>false</ConsolePause>
51 51 <DefineConstants>NET_4_5</DefineConstants>
52 52 </PropertyGroup>
53 53 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'DebugMono|AnyCPU' ">
54 54 <DebugSymbols>true</DebugSymbols>
55 55 <DebugType>full</DebugType>
56 56 <Optimize>false</Optimize>
57 57 <OutputPath>bin\Debug</OutputPath>
58 58 <DefineConstants>TRACE;DEBUG;NET_4_5;MONO</DefineConstants>
59 59 <ErrorReport>prompt</ErrorReport>
60 60 <WarningLevel>4</WarningLevel>
61 61 <RunCodeAnalysis>true</RunCodeAnalysis>
62 62 <ConsolePause>false</ConsolePause>
63 63 </PropertyGroup>
64 64 <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'ReleaseMono|AnyCPU' ">
65 65 <Optimize>true</Optimize>
66 66 <OutputPath>bin\Release</OutputPath>
67 67 <DefineConstants>NET_4_5;MONO;</DefineConstants>
68 68 <ErrorReport>prompt</ErrorReport>
69 69 <WarningLevel>4</WarningLevel>
70 70 <ConsolePause>false</ConsolePause>
71 71 </PropertyGroup>
72 72 <ItemGroup>
73 73 <Reference Include="System" />
74 74 <Reference Include="System.Xml" />
75 75 <Reference Include="mscorlib" />
76 76 </ItemGroup>
77 77 <ItemGroup>
78 78 <Compile Include="CustomEqualityComparer.cs" />
79 79 <Compile Include="Diagnostics\ConsoleTraceListener.cs" />
80 80 <Compile Include="Diagnostics\EventText.cs" />
81 81 <Compile Include="Diagnostics\LogChannel.cs" />
82 82 <Compile Include="Diagnostics\LogicalOperation.cs" />
83 83 <Compile Include="Diagnostics\TextFileListener.cs" />
84 84 <Compile Include="Diagnostics\TraceLog.cs" />
85 85 <Compile Include="Diagnostics\TraceEvent.cs" />
86 86 <Compile Include="Diagnostics\TraceEventType.cs" />
87 87 <Compile Include="ICancellable.cs" />
88 88 <Compile Include="IProgressHandler.cs" />
89 89 <Compile Include="IProgressNotifier.cs" />
90 90 <Compile Include="IPromiseT.cs" />
91 91 <Compile Include="IPromise.cs" />
92 92 <Compile Include="IServiceLocator.cs" />
93 93 <Compile Include="ITaskController.cs" />
94 94 <Compile Include="Parallels\DispatchPool.cs" />
95 95 <Compile Include="Parallels\ArrayTraits.cs" />
96 96 <Compile Include="Parallels\MTQueue.cs" />
97 97 <Compile Include="Parallels\WorkerPool.cs" />
98 98 <Compile Include="ProgressInitEventArgs.cs" />
99 99 <Compile Include="Properties\AssemblyInfo.cs" />
100 100 <Compile Include="Parallels\AsyncPool.cs" />
101 101 <Compile Include="Safe.cs" />
102 102 <Compile Include="ValueEventArgs.cs" />
103 103 <Compile Include="PromiseExtensions.cs" />
104 104 <Compile Include="SyncContextPromise.cs" />
105 105 <Compile Include="Diagnostics\OperationContext.cs" />
106 106 <Compile Include="Diagnostics\TraceContext.cs" />
107 107 <Compile Include="Diagnostics\LogEventArgs.cs" />
108 108 <Compile Include="Diagnostics\LogEventArgsT.cs" />
109 109 <Compile Include="Diagnostics\Extensions.cs" />
110 110 <Compile Include="PromiseEventType.cs" />
111 111 <Compile Include="Parallels\AsyncQueue.cs" />
112 112 <Compile Include="PromiseT.cs" />
113 113 <Compile Include="IDeferred.cs" />
114 114 <Compile Include="IDeferredT.cs" />
115 115 <Compile Include="Promise.cs" />
116 116 <Compile Include="PromiseTransientException.cs" />
117 117 <Compile Include="Parallels\Signal.cs" />
118 118 <Compile Include="Parallels\SharedLock.cs" />
119 119 <Compile Include="Diagnostics\ILogWriter.cs" />
120 120 <Compile Include="Diagnostics\ListenerBase.cs" />
121 121 <Compile Include="Parallels\BlockingQueue.cs" />
122 122 <Compile Include="AbstractEvent.cs" />
123 123 <Compile Include="AbstractPromise.cs" />
124 124 <Compile Include="AbstractPromiseT.cs" />
125 125 <Compile Include="FuncTask.cs" />
126 126 <Compile Include="FuncTaskBase.cs" />
127 127 <Compile Include="FuncTaskT.cs" />
128 128 <Compile Include="ActionChainTaskBase.cs" />
129 129 <Compile Include="ActionChainTask.cs" />
130 130 <Compile Include="ActionChainTaskT.cs" />
131 131 <Compile Include="FuncChainTaskBase.cs" />
132 132 <Compile Include="FuncChainTask.cs" />
133 133 <Compile Include="FuncChainTaskT.cs" />
134 134 <Compile Include="ActionTaskBase.cs" />
135 135 <Compile Include="ActionTask.cs" />
136 136 <Compile Include="ActionTaskT.cs" />
137 137 <Compile Include="ICancellationToken.cs" />
138 138 <Compile Include="SuccessPromise.cs" />
139 139 <Compile Include="SuccessPromiseT.cs" />
140 140 <Compile Include="PromiseAwaiterT.cs" />
141 141 <Compile Include="PromiseAwaiter.cs" />
142 142 <Compile Include="Components\ComponentContainer.cs" />
143 143 <Compile Include="Components\Disposable.cs" />
144 144 <Compile Include="Components\DisposablePool.cs" />
145 145 <Compile Include="Components\ObjectPool.cs" />
146 146 <Compile Include="Components\ServiceLocator.cs" />
147 147 <Compile Include="Components\IInitializable.cs" />
148 148 <Compile Include="TaskController.cs" />
149 149 <Compile Include="Components\App.cs" />
150 150 <Compile Include="Components\IRunnable.cs" />
151 151 <Compile Include="Components\ExecutionState.cs" />
152 152 <Compile Include="Components\RunnableComponent.cs" />
153 153 <Compile Include="Components\IFactory.cs" />
154 154 <Compile Include="Automaton\DFAStateDescriptor.cs" />
155 155 <Compile Include="Automaton\EnumAlphabet.cs" />
156 156 <Compile Include="Automaton\IAlphabet.cs" />
157 157 <Compile Include="Automaton\ParserException.cs" />
158 158 <Compile Include="Automaton\Scanner.cs" />
159 159 <Compile Include="Automaton\IndexedAlphabetBase.cs" />
160 160 <Compile Include="Automaton\IAlphabetBuilder.cs" />
161 161 <Compile Include="Automaton\RegularExpressions\AltToken.cs" />
162 162 <Compile Include="Automaton\RegularExpressions\BinaryToken.cs" />
163 163 <Compile Include="Automaton\RegularExpressions\CatToken.cs" />
164 164 <Compile Include="Automaton\DFAConst.cs" />
165 165 <Compile Include="Automaton\RegularExpressions\Grammar.cs" />
166 166 <Compile Include="Automaton\RegularExpressions\StarToken.cs" />
167 167 <Compile Include="Automaton\RegularExpressions\SymbolToken.cs" />
168 168 <Compile Include="Automaton\RegularExpressions\EmptyToken.cs" />
169 169 <Compile Include="Automaton\RegularExpressions\EndToken.cs" />
170 170 <Compile Include="Automaton\RegularExpressions\Token.cs" />
171 171 <Compile Include="Automaton\RegularExpressions\IVisitor.cs" />
172 172 <Compile Include="Automaton\AutomatonTransition.cs" />
173 <Compile Include="Automaton\RegularExpressions\RegularDFABuilder.cs" />
174 173 <Compile Include="Formats\JSON\JSONElementContext.cs" />
175 174 <Compile Include="Formats\JSON\JSONElementType.cs" />
176 175 <Compile Include="Formats\JSON\JSONGrammar.cs" />
177 176 <Compile Include="Formats\JSON\JSONParser.cs" />
178 177 <Compile Include="Formats\JSON\JSONScanner.cs" />
179 178 <Compile Include="Formats\JSON\JsonTokenType.cs" />
180 179 <Compile Include="Formats\JSON\JSONWriter.cs" />
181 180 <Compile Include="Formats\JSON\JSONXmlReader.cs" />
182 181 <Compile Include="Formats\JSON\JSONXmlReaderOptions.cs" />
183 182 <Compile Include="Formats\JSON\StringTranslator.cs" />
184 183 <Compile Include="Automaton\MapAlphabet.cs" />
185 184 <Compile Include="Automaton\DummyAlphabet.cs" />
186 <Compile Include="Automaton\RegularExpressions\RegularDFADefinition.cs" />
187 185 <Compile Include="Formats\CharAlphabet.cs" />
188 186 <Compile Include="Formats\ByteAlphabet.cs" />
189 <Compile Include="Formats\RegularCharDFADefinition.cs" />
190 187 <Compile Include="Automaton\IDFATable.cs" />
191 188 <Compile Include="Automaton\IDFATableBuilder.cs" />
192 189 <Compile Include="Automaton\DFATable.cs" />
190 <Compile Include="Automaton\RegularExpressions\RegularDFA.cs" />
191 <Compile Include="Automaton\RegularExpressions\RegularExpressionVisitor.cs" />
192 <Compile Include="Automaton\RegularExpressions\ITaggedDFABuilder.cs" />
193 193 <Compile Include="Automaton\RegularExpressions\DFAStateDescriptorT.cs" />
194 194 </ItemGroup>
195 195 <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
196 196 <ItemGroup />
197 197 <ProjectExtensions>
198 198 <MonoDevelop>
199 199 <Properties>
200 200 <Policies>
201 201 <CSharpFormattingPolicy IndentSwitchBody="True" NamespaceBraceStyle="EndOfLine" ClassBraceStyle="EndOfLine" InterfaceBraceStyle="EndOfLine" StructBraceStyle="EndOfLine" EnumBraceStyle="EndOfLine" MethodBraceStyle="EndOfLine" ConstructorBraceStyle="EndOfLine" DestructorBraceStyle="EndOfLine" BeforeMethodDeclarationParentheses="False" BeforeMethodCallParentheses="False" BeforeConstructorDeclarationParentheses="False" NewLineBeforeConstructorInitializerColon="NewLine" NewLineAfterConstructorInitializerColon="SameLine" BeforeIndexerDeclarationBracket="False" BeforeDelegateDeclarationParentheses="False" NewParentheses="False" SpacesBeforeBrackets="False" inheritsSet="Mono" inheritsScope="text/x-csharp" scope="text/x-csharp" />
202 202 <TextStylePolicy FileWidth="120" EolMarker="Unix" inheritsSet="VisualStudio" inheritsScope="text/plain" scope="text/x-csharp" />
203 203 <DotNetNamingPolicy DirectoryNamespaceAssociation="PrefixedHierarchical" ResourceNamePolicy="MSBuild" />
204 204 <TextStylePolicy FileWidth="120" TabsToSpaces="False" inheritsSet="VisualStudio" inheritsScope="text/plain" scope="application/xml" />
205 205 <XmlFormattingPolicy inheritsSet="Mono" inheritsScope="application/xml" scope="application/xml" />
206 206 <TextStylePolicy FileWidth="120" TabsToSpaces="False" inheritsSet="VisualStudio" inheritsScope="text/plain" scope="text/plain" />
207 207 <NameConventionPolicy>
208 208 <Rules>
209 209 <NamingRule Name="Namespaces" AffectedEntity="Namespace" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
210 210 <NamingRule Name="Types" AffectedEntity="Class, Struct, Enum, Delegate" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
211 211 <NamingRule Name="Interfaces" AffectedEntity="Interface" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True">
212 212 <RequiredPrefixes>
213 213 <String>I</String>
214 214 </RequiredPrefixes>
215 215 </NamingRule>
216 216 <NamingRule Name="Attributes" AffectedEntity="CustomAttributes" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True">
217 217 <RequiredSuffixes>
218 218 <String>Attribute</String>
219 219 </RequiredSuffixes>
220 220 </NamingRule>
221 221 <NamingRule Name="Event Arguments" AffectedEntity="CustomEventArgs" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True">
222 222 <RequiredSuffixes>
223 223 <String>EventArgs</String>
224 224 </RequiredSuffixes>
225 225 </NamingRule>
226 226 <NamingRule Name="Exceptions" AffectedEntity="CustomExceptions" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True">
227 227 <RequiredSuffixes>
228 228 <String>Exception</String>
229 229 </RequiredSuffixes>
230 230 </NamingRule>
231 231 <NamingRule Name="Methods" AffectedEntity="Methods" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
232 232 <NamingRule Name="Static Readonly Fields" AffectedEntity="ReadonlyField" VisibilityMask="Internal, Protected, Public" NamingStyle="CamelCase" IncludeInstanceMembers="False" IncludeStaticEntities="True" />
233 233 <NamingRule Name="Fields (Non Private)" AffectedEntity="Field" VisibilityMask="Internal, Public" NamingStyle="CamelCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
234 234 <NamingRule Name="ReadOnly Fields (Non Private)" AffectedEntity="ReadonlyField" VisibilityMask="Internal, Public" NamingStyle="CamelCase" IncludeInstanceMembers="True" IncludeStaticEntities="False" />
235 235 <NamingRule Name="Fields (Private)" AffectedEntity="Field, ReadonlyField" VisibilityMask="Private, Protected" NamingStyle="CamelCase" IncludeInstanceMembers="True" IncludeStaticEntities="False">
236 236 <RequiredPrefixes>
237 237 <String>m_</String>
238 238 </RequiredPrefixes>
239 239 </NamingRule>
240 240 <NamingRule Name="Static Fields (Private)" AffectedEntity="Field" VisibilityMask="Private" NamingStyle="CamelCase" IncludeInstanceMembers="False" IncludeStaticEntities="True">
241 241 <RequiredPrefixes>
242 242 <String>_</String>
243 243 </RequiredPrefixes>
244 244 </NamingRule>
245 245 <NamingRule Name="ReadOnly Fields (Private)" AffectedEntity="ReadonlyField" VisibilityMask="Private, Protected" NamingStyle="CamelCase" IncludeInstanceMembers="True" IncludeStaticEntities="False">
246 246 <RequiredPrefixes>
247 247 <String>m_</String>
248 248 </RequiredPrefixes>
249 249 </NamingRule>
250 250 <NamingRule Name="Constant Fields" AffectedEntity="ConstantField" VisibilityMask="VisibilityMask" NamingStyle="AllUpper" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
251 251 <NamingRule Name="Properties" AffectedEntity="Property" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
252 252 <NamingRule Name="Events" AffectedEntity="Event" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
253 253 <NamingRule Name="Enum Members" AffectedEntity="EnumMember" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
254 254 <NamingRule Name="Parameters" AffectedEntity="Parameter, LocalVariable" VisibilityMask="VisibilityMask" NamingStyle="CamelCase" IncludeInstanceMembers="True" IncludeStaticEntities="True" />
255 255 <NamingRule Name="Type Parameters" AffectedEntity="TypeParameter" VisibilityMask="VisibilityMask" NamingStyle="PascalCase" IncludeInstanceMembers="True" IncludeStaticEntities="True">
256 256 <RequiredPrefixes>
257 257 <String>T</String>
258 258 </RequiredPrefixes>
259 259 </NamingRule>
260 260 </Rules>
261 261 </NameConventionPolicy>
262 262 </Policies>
263 263 </Properties>
264 264 </MonoDevelop>
265 265 </ProjectExtensions>
266 266 <ItemGroup>
267 267 <Folder Include="Components\" />
268 268 <Folder Include="Automaton\RegularExpressions\" />
269 269 <Folder Include="Formats\" />
270 270 <Folder Include="Formats\JSON\" />
271 271 </ItemGroup>
272 272 </Project> No newline at end of file
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