ICU 70.1  70.1
rep.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 **************************************************************************
5 * Copyright (C) 1999-2012, International Business Machines Corporation and
6 * others. All Rights Reserved.
7 **************************************************************************
8 * Date Name Description
9 * 11/17/99 aliu Creation. Ported from java. Modified to
10 * match current UnicodeString API. Forced
11 * to use name "handleReplaceBetween" because
12 * of existing methods in UnicodeString.
13 **************************************************************************
14 */
15 
16 #ifndef REP_H
17 #define REP_H
18 
19 #include "unicode/utypes.h"
20 
21 #if U_SHOW_CPLUSPLUS_API
22 
23 #include "unicode/uobject.h"
24 
30 U_NAMESPACE_BEGIN
31 
32 class UnicodeString;
33 
78 
79 public:
84  virtual ~Replaceable();
85 
91  inline int32_t length() const;
92 
100  inline char16_t charAt(int32_t offset) const;
101 
114  inline UChar32 char32At(int32_t offset) const;
115 
126  virtual void extractBetween(int32_t start,
127  int32_t limit,
128  UnicodeString& target) const = 0;
129 
150  virtual void handleReplaceBetween(int32_t start,
151  int32_t limit,
152  const UnicodeString& text) = 0;
153  // Note: All other methods in this class take the names of
154  // existing UnicodeString methods. This method is the exception.
155  // It is named differently because all replace methods of
156  // UnicodeString return a UnicodeString&. The 'between' is
157  // required in order to conform to the UnicodeString naming
158  // convention; API taking start/length are named <operation>, and
159  // those taking start/limit are named <operationBetween>. The
160  // 'handle' is added because 'replaceBetween' and
161  // 'doReplaceBetween' are already taken.
162 
178  virtual void copy(int32_t start, int32_t limit, int32_t dest) = 0;
179 
189  virtual UBool hasMetaData() const;
190 
203  virtual Replaceable *clone() const;
204 
205 protected:
206 
211  inline Replaceable();
212 
213  /*
214  * Assignment operator not declared. The compiler will provide one
215  * which does nothing since this class does not contain any data members.
216  * API/code coverage may show the assignment operator as present and
217  * untested - ignore.
218  * Subclasses need this assignment operator if they use compiler-provided
219  * assignment operators of their own. An alternative to not declaring one
220  * here would be to declare and empty-implement a protected or public one.
221  Replaceable &Replaceable::operator=(const Replaceable &);
222  */
223 
228  virtual int32_t getLength() const = 0;
229 
234  virtual char16_t getCharAt(int32_t offset) const = 0;
235 
240  virtual UChar32 getChar32At(int32_t offset) const = 0;
241 };
242 
243 inline Replaceable::Replaceable() {}
244 
245 inline int32_t
246 Replaceable::length() const {
247  return getLength();
248 }
249 
250 inline char16_t
251 Replaceable::charAt(int32_t offset) const {
252  return getCharAt(offset);
253 }
254 
255 inline UChar32
256 Replaceable::char32At(int32_t offset) const {
257  return getChar32At(offset);
258 }
259 
260 // There is no rep.cpp, see unistr.cpp for Replaceable function implementations.
261 
262 U_NAMESPACE_END
263 
264 #endif /* U_SHOW_CPLUSPLUS_API */
265 
266 #endif
Replaceable is an abstract base class representing a string of characters that supports the replaceme...
Definition: rep.h:77
virtual ~Replaceable()
Destructor.
virtual void extractBetween(int32_t start, int32_t limit, UnicodeString &target) const =0
Copies characters in the range [start, limit) into the UnicodeString target.
virtual UChar32 getChar32At(int32_t offset) const =0
Virtual version of char32At().
virtual void copy(int32_t start, int32_t limit, int32_t dest)=0
Copies a substring of this object, retaining metadata.
virtual void handleReplaceBetween(int32_t start, int32_t limit, const UnicodeString &text)=0
Replaces a substring of this object with the given text.
virtual char16_t getCharAt(int32_t offset) const =0
Virtual version of charAt().
virtual int32_t getLength() const =0
Virtual version of length().
virtual Replaceable * clone() const
Clone this object, an instance of a subclass of Replaceable.
virtual UBool hasMetaData() const
Returns true if this object contains metadata.
UObject is the common ICU "boilerplate" class.
Definition: uobject.h:223
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:296
int32_t UChar32
Define UChar32 as a type for single Unicode code points.
Definition: umachine.h:467
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:269
C++ API: Common ICU base class UObject.
Basic definitions for ICU, for both C and C++ APIs.
#define U_COMMON_API
Set to export library symbols from inside the common library, and to import them from outside.
Definition: utypes.h:300