intl/icu/source/common/unicode/schriter.h

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
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Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /*
michael@0 2 ******************************************************************************
michael@0 3 *
michael@0 4 * Copyright (C) 1998-2005, International Business Machines
michael@0 5 * Corporation and others. All Rights Reserved.
michael@0 6 *
michael@0 7 ******************************************************************************
michael@0 8 *
michael@0 9 * File schriter.h
michael@0 10 *
michael@0 11 * Modification History:
michael@0 12 *
michael@0 13 * Date Name Description
michael@0 14 * 05/05/99 stephen Cleaned up.
michael@0 15 ******************************************************************************
michael@0 16 */
michael@0 17
michael@0 18 #ifndef SCHRITER_H
michael@0 19 #define SCHRITER_H
michael@0 20
michael@0 21 #include "unicode/utypes.h"
michael@0 22 #include "unicode/chariter.h"
michael@0 23 #include "unicode/uchriter.h"
michael@0 24
michael@0 25 /**
michael@0 26 * \file
michael@0 27 * \brief C++ API: String Character Iterator
michael@0 28 */
michael@0 29
michael@0 30 U_NAMESPACE_BEGIN
michael@0 31 /**
michael@0 32 * A concrete subclass of CharacterIterator that iterates over the
michael@0 33 * characters (code units or code points) in a UnicodeString.
michael@0 34 * It's possible not only to create an
michael@0 35 * iterator that iterates over an entire UnicodeString, but also to
michael@0 36 * create one that iterates over only a subrange of a UnicodeString
michael@0 37 * (iterators over different subranges of the same UnicodeString don't
michael@0 38 * compare equal).
michael@0 39 * @see CharacterIterator
michael@0 40 * @see ForwardCharacterIterator
michael@0 41 * @stable ICU 2.0
michael@0 42 */
michael@0 43 class U_COMMON_API StringCharacterIterator : public UCharCharacterIterator {
michael@0 44 public:
michael@0 45 /**
michael@0 46 * Create an iterator over the UnicodeString referred to by "textStr".
michael@0 47 * The UnicodeString object is copied.
michael@0 48 * The iteration range is the whole string, and the starting position is 0.
michael@0 49 * @param textStr The unicode string used to create an iterator
michael@0 50 * @stable ICU 2.0
michael@0 51 */
michael@0 52 StringCharacterIterator(const UnicodeString& textStr);
michael@0 53
michael@0 54 /**
michael@0 55 * Create an iterator over the UnicodeString referred to by "textStr".
michael@0 56 * The iteration range is the whole string, and the starting
michael@0 57 * position is specified by "textPos". If "textPos" is outside the valid
michael@0 58 * iteration range, the behavior of this object is undefined.
michael@0 59 * @param textStr The unicode string used to create an iterator
michael@0 60 * @param textPos The starting position of the iteration
michael@0 61 * @stable ICU 2.0
michael@0 62 */
michael@0 63 StringCharacterIterator(const UnicodeString& textStr,
michael@0 64 int32_t textPos);
michael@0 65
michael@0 66 /**
michael@0 67 * Create an iterator over the UnicodeString referred to by "textStr".
michael@0 68 * The UnicodeString object is copied.
michael@0 69 * The iteration range begins with the code unit specified by
michael@0 70 * "textBegin" and ends with the code unit BEFORE the code unit specfied
michael@0 71 * by "textEnd". The starting position is specified by "textPos". If
michael@0 72 * "textBegin" and "textEnd" don't form a valid range on "text" (i.e.,
michael@0 73 * textBegin >= textEnd or either is negative or greater than text.size()),
michael@0 74 * or "textPos" is outside the range defined by "textBegin" and "textEnd",
michael@0 75 * the behavior of this iterator is undefined.
michael@0 76 * @param textStr The unicode string used to create the StringCharacterIterator
michael@0 77 * @param textBegin The begin position of the iteration range
michael@0 78 * @param textEnd The end position of the iteration range
michael@0 79 * @param textPos The starting position of the iteration
michael@0 80 * @stable ICU 2.0
michael@0 81 */
michael@0 82 StringCharacterIterator(const UnicodeString& textStr,
michael@0 83 int32_t textBegin,
michael@0 84 int32_t textEnd,
michael@0 85 int32_t textPos);
michael@0 86
michael@0 87 /**
michael@0 88 * Copy constructor. The new iterator iterates over the same range
michael@0 89 * of the same string as "that", and its initial position is the
michael@0 90 * same as "that"'s current position.
michael@0 91 * The UnicodeString object in "that" is copied.
michael@0 92 * @param that The StringCharacterIterator to be copied
michael@0 93 * @stable ICU 2.0
michael@0 94 */
michael@0 95 StringCharacterIterator(const StringCharacterIterator& that);
michael@0 96
michael@0 97 /**
michael@0 98 * Destructor.
michael@0 99 * @stable ICU 2.0
michael@0 100 */
michael@0 101 virtual ~StringCharacterIterator();
michael@0 102
michael@0 103 /**
michael@0 104 * Assignment operator. *this is altered to iterate over the same
michael@0 105 * range of the same string as "that", and refers to the same
michael@0 106 * character within that string as "that" does.
michael@0 107 * @param that The object to be copied.
michael@0 108 * @return the newly created object.
michael@0 109 * @stable ICU 2.0
michael@0 110 */
michael@0 111 StringCharacterIterator&
michael@0 112 operator=(const StringCharacterIterator& that);
michael@0 113
michael@0 114 /**
michael@0 115 * Returns true if the iterators iterate over the same range of the
michael@0 116 * same string and are pointing at the same character.
michael@0 117 * @param that The ForwardCharacterIterator to be compared for equality
michael@0 118 * @return true if the iterators iterate over the same range of the
michael@0 119 * same string and are pointing at the same character.
michael@0 120 * @stable ICU 2.0
michael@0 121 */
michael@0 122 virtual UBool operator==(const ForwardCharacterIterator& that) const;
michael@0 123
michael@0 124 /**
michael@0 125 * Returns a new StringCharacterIterator referring to the same
michael@0 126 * character in the same range of the same string as this one. The
michael@0 127 * caller must delete the new iterator.
michael@0 128 * @return the newly cloned object.
michael@0 129 * @stable ICU 2.0
michael@0 130 */
michael@0 131 virtual CharacterIterator* clone(void) const;
michael@0 132
michael@0 133 /**
michael@0 134 * Sets the iterator to iterate over the provided string.
michael@0 135 * @param newText The string to be iterated over
michael@0 136 * @stable ICU 2.0
michael@0 137 */
michael@0 138 void setText(const UnicodeString& newText);
michael@0 139
michael@0 140 /**
michael@0 141 * Copies the UnicodeString under iteration into the UnicodeString
michael@0 142 * referred to by "result". Even if this iterator iterates across
michael@0 143 * only a part of this string, the whole string is copied.
michael@0 144 * @param result Receives a copy of the text under iteration.
michael@0 145 * @stable ICU 2.0
michael@0 146 */
michael@0 147 virtual void getText(UnicodeString& result);
michael@0 148
michael@0 149 /**
michael@0 150 * Return a class ID for this object (not really public)
michael@0 151 * @return a class ID for this object.
michael@0 152 * @stable ICU 2.0
michael@0 153 */
michael@0 154 virtual UClassID getDynamicClassID(void) const;
michael@0 155
michael@0 156 /**
michael@0 157 * Return a class ID for this class (not really public)
michael@0 158 * @return a class ID for this class
michael@0 159 * @stable ICU 2.0
michael@0 160 */
michael@0 161 static UClassID U_EXPORT2 getStaticClassID(void);
michael@0 162
michael@0 163 protected:
michael@0 164 /**
michael@0 165 * Default constructor, iteration over empty string.
michael@0 166 * @stable ICU 2.0
michael@0 167 */
michael@0 168 StringCharacterIterator();
michael@0 169
michael@0 170 /**
michael@0 171 * Sets the iterator to iterate over the provided string.
michael@0 172 * @param newText The string to be iterated over
michael@0 173 * @param newTextLength The length of the String
michael@0 174 * @stable ICU 2.0
michael@0 175 */
michael@0 176 void setText(const UChar* newText, int32_t newTextLength);
michael@0 177
michael@0 178 /**
michael@0 179 * Copy of the iterated string object.
michael@0 180 * @stable ICU 2.0
michael@0 181 */
michael@0 182 UnicodeString text;
michael@0 183
michael@0 184 };
michael@0 185
michael@0 186 U_NAMESPACE_END
michael@0 187 #endif

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