1 /*
2 **********************************************************************
3 * Copyright (C) 1999-2011, International Business Machines
4 * Corporation and others. All Rights Reserved.
5 **********************************************************************
6 */
7
8 #include "unicode/chariter.h"
9
10 U_NAMESPACE_BEGIN
11
~ForwardCharacterIterator()12 ForwardCharacterIterator::~ForwardCharacterIterator() {}
ForwardCharacterIterator()13 ForwardCharacterIterator::ForwardCharacterIterator()
14 : UObject()
15 {}
ForwardCharacterIterator(const ForwardCharacterIterator & other)16 ForwardCharacterIterator::ForwardCharacterIterator(const ForwardCharacterIterator &other)
17 : UObject(other)
18 {}
19
20
CharacterIterator()21 CharacterIterator::CharacterIterator()
22 : textLength(0), pos(0), begin(0), end(0) {
23 }
24
CharacterIterator(int32_t length)25 CharacterIterator::CharacterIterator(int32_t length)
26 : textLength(length), pos(0), begin(0), end(length) {
27 if(textLength < 0) {
28 textLength = end = 0;
29 }
30 }
31
CharacterIterator(int32_t length,int32_t position)32 CharacterIterator::CharacterIterator(int32_t length, int32_t position)
33 : textLength(length), pos(position), begin(0), end(length) {
34 if(textLength < 0) {
35 textLength = end = 0;
36 }
37 if(pos < 0) {
38 pos = 0;
39 } else if(pos > end) {
40 pos = end;
41 }
42 }
43
CharacterIterator(int32_t length,int32_t textBegin,int32_t textEnd,int32_t position)44 CharacterIterator::CharacterIterator(int32_t length, int32_t textBegin, int32_t textEnd, int32_t position)
45 : textLength(length), pos(position), begin(textBegin), end(textEnd) {
46 if(textLength < 0) {
47 textLength = 0;
48 }
49 if(begin < 0) {
50 begin = 0;
51 } else if(begin > textLength) {
52 begin = textLength;
53 }
54 if(end < begin) {
55 end = begin;
56 } else if(end > textLength) {
57 end = textLength;
58 }
59 if(pos < begin) {
60 pos = begin;
61 } else if(pos > end) {
62 pos = end;
63 }
64 }
65
~CharacterIterator()66 CharacterIterator::~CharacterIterator() {}
67
CharacterIterator(const CharacterIterator & that)68 CharacterIterator::CharacterIterator(const CharacterIterator &that) :
69 ForwardCharacterIterator(that),
70 textLength(that.textLength), pos(that.pos), begin(that.begin), end(that.end)
71 {
72 }
73
74 CharacterIterator &
operator =(const CharacterIterator & that)75 CharacterIterator::operator=(const CharacterIterator &that) {
76 ForwardCharacterIterator::operator=(that);
77 textLength = that.textLength;
78 pos = that.pos;
79 begin = that.begin;
80 end = that.end;
81 return *this;
82 }
83
84 // implementing first[32]PostInc() directly in a subclass should be faster
85 // but these implementations make subclassing a little easier
86 UChar
firstPostInc(void)87 CharacterIterator::firstPostInc(void) {
88 setToStart();
89 return nextPostInc();
90 }
91
92 UChar32
first32PostInc(void)93 CharacterIterator::first32PostInc(void) {
94 setToStart();
95 return next32PostInc();
96 }
97
98 U_NAMESPACE_END
99