/
tokenizer.h
244 lines (173 loc) · 4.82 KB
/
tokenizer.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
// ============================================================================
//
// = LIBRARY
// ULib - c++ library
//
// = FILENAME
// tokenizer.h
//
// = AUTHOR
// Stefano Casazza
//
// ============================================================================
#ifndef ULIB_TOKENIZER_H
#define ULIB_TOKENIZER_H 1
#include <ulib/string.h>
class UQueryParser;
template <class T> class UVector;
class U_EXPORT UTokenizer {
public:
// Check for memory error
U_MEMORY_TEST
// Allocator e Deallocator
U_MEMORY_ALLOCATOR
U_MEMORY_DEALLOCATOR
// COSTRUTTORI
UTokenizer(const char* d = 0)
{
U_TRACE_REGISTER_OBJECT(0, UTokenizer, "%S", d)
delim = d;
s = end = 0;
}
UTokenizer(const UString& data, const char* d = 0) : str(data)
{
U_TRACE_REGISTER_OBJECT(0, UTokenizer, "%V,%S", data.rep, d)
s = data.data();
end = data.end();
delim = d;
}
~UTokenizer()
{
U_TRACE_UNREGISTER_OBJECT(0, UTokenizer)
}
// VARIE
bool atEnd()
{
U_TRACE_NO_PARAM(0, "UTokenizer::atEnd()")
bool result = (s >= end);
U_RETURN(result);
}
void setDelimiter(const char* sep)
{
U_TRACE(0, "UTokenizer::setDelimiter(%S)", sep)
delim = sep;
}
void setData(const UString& data);
void skipSpaces()
{
U_TRACE_NO_PARAM(0, "UTokenizer::skipSpaces()")
while (s < end && u__isspace(*s)) ++s;
}
void setPointer(const char* ptr)
{
U_TRACE(0, "UTokenizer::setPointer(%S)", ptr)
U_INTERNAL_ASSERT(ptr <= end)
s = ptr;
}
const char* getPointer() const
{
U_TRACE_NO_PARAM(0, "UTokenizer::getPointer()")
U_RETURN(s);
}
const char* getEnd() const
{
U_TRACE_NO_PARAM(0, "UTokenizer::getEnd()")
U_RETURN(end);
}
void setDistance(uint32_t pos)
{
U_TRACE(0, "UTokenizer::setDistance(%u)", pos)
s = str.c_pointer(pos);
}
uint32_t getDistance() const __pure
{
U_TRACE(0, "UTokenizer::getDistance()")
uint32_t pos = (s < end ? str.distance(s) : str.size());
U_RETURN(pos);
}
// get current char
char current()
{
U_TRACE_NO_PARAM(0, "UTokenizer::current()")
if (s >= end) U_RETURN('\0');
U_RETURN(*s);
}
// go prev char
void back()
{
U_TRACE_NO_PARAM(0, "UTokenizer::back()")
U_INTERNAL_ASSERT_MAJOR(s, str.data())
--s;
}
// get next char
char next()
{
U_TRACE_NO_PARAM(0, "UTokenizer::next()")
if (s >= end) U_RETURN('\0');
U_RETURN(*s++);
}
UTokenizer& operator++() { ++s; return *this; } // ++A
// get next token
bool next(UString& tok, char c);
bool extend(UString& tok, char c); // extend the actual token to the next char 'c'... (see PEC_report.cpp)
bool next(UString& tok, bPFi func);
bool next(UString& tok, bool* bgroup);
// EXT
UString substr() const
{
U_TRACE_NO_PARAM(0, "UTokenizer::substr()")
U_INTERNAL_ASSERT(s <= end)
return (s < end ? str.substr(str.distance(s)) : UString::getStringNull());
}
UString substr(const char* start) const
{
U_TRACE(0, "UTokenizer::substr(%p)", start)
U_INTERNAL_ASSERT(start < end)
return str.substr(start, s - start);
}
UString getTokenQueryParser();
int getTokenId(UString* ptoken);
bool tokenSeen(const UString* x);
bool skipNumber(bool& isReal);
bool skipToken(const char* token, uint32_t sz);
static const char* group;
static bool group_skip, avoid_punctuation;
static uint32_t group_len, group_len_div_2;
static void setGroup(const char* grp, uint32_t grp_len = 0, bool bskip = false)
{
U_TRACE(0, "UTokenizer::setGroup(%S,%u,%b)", grp, grp_len, bskip)
group = grp;
group_skip = bskip;
group_len = grp_len;
group_len_div_2 = grp_len / 2;
}
static void setSkipTagXML(bool flag)
{
U_TRACE(0, "UTokenizer::setSkipTagXML(%b)", flag)
if (flag) setGroup(U_CONSTANT_TO_PARAM("<>"), true);
else setGroup(0, 0, false);
}
static void setAvoidPunctuation(bool flag)
{
U_TRACE(0, "UTokenizer::setAvoidPunctuation(%b)", flag)
avoid_punctuation = flag;
}
#if defined(U_STDCPP_ENABLE) && defined(DEBUG)
const char* dump(bool reset) const;
#endif
protected:
const char* s;
const char* end;
const char* delim;
UString str;
private:
#ifdef U_COMPILER_DELETE_MEMBERS
UTokenizer(const UTokenizer&) = delete;
UTokenizer& operator=(const UTokenizer&) = delete;
#else
UTokenizer(const UTokenizer&) {}
UTokenizer& operator=(const UTokenizer&) { return *this; }
#endif
friend class UQueryParser;
};
#endif