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
|
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
* Copyright (C) 1998-2005, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
*
* File schriter.h
*
* Modification History:
*
* Date Name Description
* 05/05/99 stephen Cleaned up.
******************************************************************************
*/
#ifndef SCHRITER_H
#define SCHRITER_H
#include "unicode/utypes.h"
#if U_SHOW_CPLUSPLUS_API
#include "unicode/chariter.h"
#include "unicode/uchriter.h"
/**
* \file
* \brief C++ API: String Character Iterator
*/
U_NAMESPACE_BEGIN
/**
* A concrete subclass of CharacterIterator that iterates over the
* characters (code units or code points) in a UnicodeString.
* It's possible not only to create an
* iterator that iterates over an entire UnicodeString, but also to
* create one that iterates over only a subrange of a UnicodeString
* (iterators over different subranges of the same UnicodeString don't
* compare equal).
* @see CharacterIterator
* @see ForwardCharacterIterator
* @stable ICU 2.0
*/
class U_COMMON_API StringCharacterIterator : public UCharCharacterIterator {
public:
/**
* Create an iterator over the UnicodeString referred to by "textStr".
* The UnicodeString object is copied.
* The iteration range is the whole string, and the starting position is 0.
* @param textStr The unicode string used to create an iterator
* @stable ICU 2.0
*/
StringCharacterIterator(const UnicodeString& textStr);
/**
* Create an iterator over the UnicodeString referred to by "textStr".
* The iteration range is the whole string, and the starting
* position is specified by "textPos". If "textPos" is outside the valid
* iteration range, the behavior of this object is undefined.
* @param textStr The unicode string used to create an iterator
* @param textPos The starting position of the iteration
* @stable ICU 2.0
*/
StringCharacterIterator(const UnicodeString& textStr,
int32_t textPos);
/**
* Create an iterator over the UnicodeString referred to by "textStr".
* The UnicodeString object is copied.
* The iteration range begins with the code unit specified by
* "textBegin" and ends with the code unit BEFORE the code unit specified
* by "textEnd". The starting position is specified by "textPos". If
* "textBegin" and "textEnd" don't form a valid range on "text" (i.e.,
* textBegin >= textEnd or either is negative or greater than text.size()),
* or "textPos" is outside the range defined by "textBegin" and "textEnd",
* the behavior of this iterator is undefined.
* @param textStr The unicode string used to create the StringCharacterIterator
* @param textBegin The begin position of the iteration range
* @param textEnd The end position of the iteration range
* @param textPos The starting position of the iteration
* @stable ICU 2.0
*/
StringCharacterIterator(const UnicodeString& textStr,
int32_t textBegin,
int32_t textEnd,
int32_t textPos);
/**
* Copy constructor. The new iterator iterates over the same range
* of the same string as "that", and its initial position is the
* same as "that"'s current position.
* The UnicodeString object in "that" is copied.
* @param that The StringCharacterIterator to be copied
* @stable ICU 2.0
*/
StringCharacterIterator(const StringCharacterIterator& that);
/**
* Destructor.
* @stable ICU 2.0
*/
virtual ~StringCharacterIterator();
/**
* Assignment operator. *this is altered to iterate over the same
* range of the same string as "that", and refers to the same
* character within that string as "that" does.
* @param that The object to be copied.
* @return the newly created object.
* @stable ICU 2.0
*/
StringCharacterIterator&
operator=(const StringCharacterIterator& that);
/**
* Returns true if the iterators iterate over the same range of the
* same string and are pointing at the same character.
* @param that The ForwardCharacterIterator to be compared for equality
* @return true if the iterators iterate over the same range of the
* same string and are pointing at the same character.
* @stable ICU 2.0
*/
virtual bool operator==(const ForwardCharacterIterator& that) const override;
/**
* Returns a new StringCharacterIterator referring to the same
* character in the same range of the same string as this one. The
* caller must delete the new iterator.
* @return the newly cloned object.
* @stable ICU 2.0
*/
virtual StringCharacterIterator* clone() const override;
/**
* Sets the iterator to iterate over the provided string.
* @param newText The string to be iterated over
* @stable ICU 2.0
*/
void setText(const UnicodeString& newText);
/**
* Copies the UnicodeString under iteration into the UnicodeString
* referred to by "result". Even if this iterator iterates across
* only a part of this string, the whole string is copied.
* @param result Receives a copy of the text under iteration.
* @stable ICU 2.0
*/
virtual void getText(UnicodeString& result) override;
/**
* Return a class ID for this object (not really public)
* @return a class ID for this object.
* @stable ICU 2.0
*/
virtual UClassID getDynamicClassID(void) const override;
/**
* Return a class ID for this class (not really public)
* @return a class ID for this class
* @stable ICU 2.0
*/
static UClassID U_EXPORT2 getStaticClassID(void);
protected:
/**
* Default constructor, iteration over empty string.
* @stable ICU 2.0
*/
StringCharacterIterator();
/**
* Sets the iterator to iterate over the provided string.
* @param newText The string to be iterated over
* @param newTextLength The length of the String
* @stable ICU 2.0
*/
void setText(const char16_t* newText, int32_t newTextLength);
/**
* Copy of the iterated string object.
* @stable ICU 2.0
*/
UnicodeString text;
};
U_NAMESPACE_END
#endif /* U_SHOW_CPLUSPLUS_API */
#endif
|