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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 1997-2012, International Business Machines
* Corporation and others. All Rights Reserved.
******************************************************************************
* file name: nfrlist.h
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* Modification history
* Date Name Comments
* 10/11/2001 Doug Ported from ICU4J
*/
#ifndef NFRLIST_H
#define NFRLIST_H
#include "unicode/rbnf.h"
#if U_HAVE_RBNF
#include "unicode/uobject.h"
#include "nfrule.h"
#include "cmemory.h"
U_NAMESPACE_BEGIN
// unsafe class for internal use only. assume memory allocations succeed, indexes are valid.
// should be a template, but we can't use them
class NFRuleList : public UMemory {
protected:
NFRule** fStuff;
uint32_t fCount;
uint32_t fCapacity;
public:
NFRuleList(uint32_t capacity = 10)
: fStuff(capacity ? static_cast<NFRule**>(uprv_malloc(capacity * sizeof(NFRule*))) : nullptr)
, fCount(0)
, fCapacity(capacity) {}
~NFRuleList() {
if (fStuff) {
for(uint32_t i = 0; i < fCount; ++i) {
delete fStuff[i];
}
uprv_free(fStuff);
}
}
NFRule* operator[](uint32_t index) const { return fStuff != nullptr ? fStuff[index] : nullptr; }
NFRule* remove(uint32_t index) {
if (fStuff == nullptr) {
return nullptr;
}
NFRule* result = fStuff[index];
fCount -= 1;
for (uint32_t i = index; i < fCount; ++i) { // assumes small arrays
fStuff[i] = fStuff[i+1];
}
return result;
}
void add(NFRule* thing) {
if (fCount == fCapacity) {
fCapacity += 10;
fStuff = static_cast<NFRule**>(uprv_realloc(fStuff, fCapacity * sizeof(NFRule*))); // assume success
}
if (fStuff != nullptr) {
fStuff[fCount++] = thing;
} else {
fCapacity = 0;
fCount = 0;
}
}
uint32_t size() const { return fCount; }
NFRule* last() const { return (fCount > 0 && fStuff != nullptr) ? fStuff[fCount-1] : nullptr; }
NFRule** release() {
add(nullptr); // ensure null termination
NFRule** result = fStuff;
fStuff = nullptr;
fCount = 0;
fCapacity = 0;
return result;
}
void deleteAll() {
NFRule** tmp = nullptr;
int32_t size = fCount;
if (size > 0) {
tmp = release();
for (int32_t i = 0; i < size; i++) {
delete tmp[i];
}
if (tmp) {
uprv_free(tmp);
}
}
}
private:
NFRuleList(const NFRuleList &other); // forbid copying of this class
NFRuleList &operator=(const NFRuleList &other); // forbid copying of this class
};
U_NAMESPACE_END
/* U_HAVE_RBNF */
#endif
// NFRLIST_H
#endif
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