michael@0: /*
michael@0: **********************************************************************
michael@0: *   Copyright (C) 1999-2011, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: **********************************************************************
michael@0: */
michael@0: 
michael@0: #include "unicode/chariter.h"
michael@0: 
michael@0: U_NAMESPACE_BEGIN
michael@0: 
michael@0: ForwardCharacterIterator::~ForwardCharacterIterator() {}
michael@0: ForwardCharacterIterator::ForwardCharacterIterator()
michael@0: : UObject()
michael@0: {}
michael@0: ForwardCharacterIterator::ForwardCharacterIterator(const ForwardCharacterIterator &other)
michael@0: : UObject(other)
michael@0: {}
michael@0: 
michael@0: 
michael@0: CharacterIterator::CharacterIterator()
michael@0: : textLength(0), pos(0), begin(0), end(0) {
michael@0: }
michael@0: 
michael@0: CharacterIterator::CharacterIterator(int32_t length)
michael@0: : textLength(length), pos(0), begin(0), end(length) {
michael@0:     if(textLength < 0) {
michael@0:         textLength = end = 0;
michael@0:     }
michael@0: }
michael@0: 
michael@0: CharacterIterator::CharacterIterator(int32_t length, int32_t position)
michael@0: : textLength(length), pos(position), begin(0), end(length) {
michael@0:     if(textLength < 0) {
michael@0:         textLength = end = 0;
michael@0:     }
michael@0:     if(pos < 0) {
michael@0:         pos = 0;
michael@0:     } else if(pos > end) {
michael@0:         pos = end;
michael@0:     }
michael@0: }
michael@0: 
michael@0: CharacterIterator::CharacterIterator(int32_t length, int32_t textBegin, int32_t textEnd, int32_t position)
michael@0: : textLength(length), pos(position), begin(textBegin), end(textEnd) {
michael@0:     if(textLength < 0) {
michael@0:         textLength = 0;
michael@0:     }
michael@0:     if(begin < 0) {
michael@0:         begin = 0;
michael@0:     } else if(begin > textLength) {
michael@0:         begin = textLength;
michael@0:     }
michael@0:     if(end < begin) {
michael@0:         end = begin;
michael@0:     } else if(end > textLength) {
michael@0:         end = textLength;
michael@0:     }
michael@0:     if(pos < begin) {
michael@0:         pos = begin;
michael@0:     } else if(pos > end) {
michael@0:         pos = end;
michael@0:     }
michael@0: }
michael@0: 
michael@0: CharacterIterator::~CharacterIterator() {}
michael@0: 
michael@0: CharacterIterator::CharacterIterator(const CharacterIterator &that) :
michael@0: ForwardCharacterIterator(that),
michael@0: textLength(that.textLength), pos(that.pos), begin(that.begin), end(that.end)
michael@0: {
michael@0: }
michael@0: 
michael@0: CharacterIterator &
michael@0: CharacterIterator::operator=(const CharacterIterator &that) {
michael@0:     ForwardCharacterIterator::operator=(that);
michael@0:     textLength = that.textLength;
michael@0:     pos = that.pos;
michael@0:     begin = that.begin;
michael@0:     end = that.end;
michael@0:     return *this;
michael@0: }
michael@0: 
michael@0: // implementing first[32]PostInc() directly in a subclass should be faster
michael@0: // but these implementations make subclassing a little easier
michael@0: UChar
michael@0: CharacterIterator::firstPostInc(void) {
michael@0:     setToStart();
michael@0:     return nextPostInc();
michael@0: }
michael@0: 
michael@0: UChar32
michael@0: CharacterIterator::first32PostInc(void) {
michael@0:     setToStart();
michael@0:     return next32PostInc();
michael@0: }
michael@0: 
michael@0: U_NAMESPACE_END