/src/icu/source/common/uvector.cpp

Source (jump to first uncovered line)
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 1999-2013, International Business Machines Corporation and
* others. All Rights Reserved.
******************************************************************************
*   Date        Name        Description
*   10/22/99    alan        Creation.
**********************************************************************
*/

#include "uvector.h"
#include "cmemory.h"
#include "uarrsort.h"
#include "uelement.h"

U_NAMESPACE_BEGIN

constexpr int32_t DEFAULT_CAPACITY = 8;

/*
 * Constants for hinting whether a key is an integer
 * or a pointer.  If a hint bit is zero, then the associated
 * token is assumed to be an integer. This is needed for iSeries
 */
constexpr int8_t HINT_KEY_POINTER = 1;
constexpr int8_t HINT_KEY_INTEGER = 0;
 
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UVector)

UVector::UVector(UErrorCode &status) :
        UVector(nullptr, nullptr, DEFAULT_CAPACITY, status) {
}

UVector::UVector(int32_t initialCapacity, UErrorCode &status) :
        UVector(nullptr, nullptr, initialCapacity, status) {
}

UVector::UVector(UObjectDeleter *d, UElementsAreEqual *c, UErrorCode &status) :
        UVector(d, c, DEFAULT_CAPACITY, status) {
}

UVector::UVector(UObjectDeleter *d, UElementsAreEqual *c, int32_t initialCapacity, UErrorCode &status) :
    deleter(d),
    comparer(c)
{
    if (U_FAILURE(status)) {
        return;
    }
    // Fix bogus initialCapacity values; avoid malloc(0) and integer overflow
    if ((initialCapacity < 1) || (initialCapacity > (int32_t)(INT32_MAX / sizeof(UElement)))) {
        initialCapacity = DEFAULT_CAPACITY;
    }
    elements = (UElement *)uprv_malloc(sizeof(UElement)*initialCapacity);
    if (elements == nullptr) {
        status = U_MEMORY_ALLOCATION_ERROR;
    } else {
        capacity = initialCapacity;
    }
}

UVector::~UVector() {
    removeAllElements();
    uprv_free(elements);
    elements = nullptr;
}

/**
 * Assign this object to another (make this a copy of 'other').
 * Use the 'assign' function to assign each element.
 */
void UVector::assign(const UVector& other, UElementAssigner *assign, UErrorCode &ec) {
    if (ensureCapacity(other.count, ec)) {
        setSize(other.count, ec);
        if (U_SUCCESS(ec)) {
            for (int32_t i=0; i<other.count; ++i) {
                if (elements[i].pointer != nullptr && deleter != nullptr) {
                    (*deleter)(elements[i].pointer);
                }
                (*assign)(&elements[i], &other.elements[i]);
            }
        }
    }
}

// This only does something sensible if this object has a non-null comparer
bool UVector::operator==(const UVector& other) const {
    U_ASSERT(comparer != nullptr);
    if (count != other.count) return false;
    if (comparer != nullptr) {
        // Compare using this object's comparer
        for (int32_t i=0; i<count; ++i) {
            if (!(*comparer)(elements[i], other.elements[i])) {
                return false;
            }
        }
    }
    return true;
}

void UVector::addElement(void* obj, UErrorCode &status) {
    U_ASSERT(deleter == nullptr);
    if (ensureCapacity(count + 1, status)) {
        elements[count++].pointer = obj;
    }
}

void UVector::adoptElement(void* obj, UErrorCode &status) {
    U_ASSERT(deleter != nullptr);
    if (ensureCapacity(count + 1, status)) {
        elements[count++].pointer = obj;
    } else {
        (*deleter)(obj);
    }
}
void UVector::addElement(int32_t elem, UErrorCode &status) {
    U_ASSERT(deleter == nullptr);  // Usage error. Mixing up ints and pointers.
    if (ensureCapacity(count + 1, status)) {
        elements[count].pointer = nullptr;     // Pointers may be bigger than ints.
        elements[count].integer = elem;
        count++;
    }
}

void UVector::setElementAt(void* obj, int32_t index) {
    if (0 <= index && index < count) {
        if (elements[index].pointer != nullptr && deleter != nullptr) {
            (*deleter)(elements[index].pointer);
        }
        elements[index].pointer = obj;
    } else {
        /* index out of range */
        if (deleter != nullptr) {
            (*deleter)(obj);
        }
    }
}

void UVector::setElementAt(int32_t elem, int32_t index) {
    U_ASSERT(deleter == nullptr);  // Usage error. Mixing up ints and pointers.
    if (0 <= index && index < count) {
        elements[index].pointer = nullptr;
        elements[index].integer = elem;
    }
    /* else index out of range */
}

void UVector::insertElementAt(void* obj, int32_t index, UErrorCode &status) {
    if (ensureCapacity(count + 1, status)) {
        if (0 <= index && index <= count) {
            for (int32_t i=count; i>index; --i) {
                elements[i] = elements[i-1];
            }
            elements[index].pointer = obj;
            ++count;
        } else {
            /* index out of range */
            status = U_ILLEGAL_ARGUMENT_ERROR;
        }
    }
    if (U_FAILURE(status) && deleter != nullptr) {
        (*deleter)(obj);
    }
}

void UVector::insertElementAt(int32_t elem, int32_t index, UErrorCode &status) {
    U_ASSERT(deleter == nullptr);  // Usage error. Mixing up ints and pointers.
    // must have 0 <= index <= count
    if (ensureCapacity(count + 1, status)) {
        if (0 <= index && index <= count) {
            for (int32_t i=count; i>index; --i) {
                elements[i] = elements[i-1];
            }
            elements[index].pointer = nullptr;
            elements[index].integer = elem;
            ++count;
        } else {
            /* index out of range */
            status = U_ILLEGAL_ARGUMENT_ERROR;
        }
    }
}

void* UVector::elementAt(int32_t index) const {
    return (0 <= index && index < count) ? elements[index].pointer : 0;
}

int32_t UVector::elementAti(int32_t index) const {
    return (0 <= index && index < count) ? elements[index].integer : 0;
}

UBool UVector::containsAll(const UVector& other) const {
    for (int32_t i=0; i<other.size(); ++i) {
        if (indexOf(other.elements[i]) < 0) {
            return FALSE;
        }
    }
    return TRUE;
}

UBool UVector::containsNone(const UVector& other) const {
    for (int32_t i=0; i<other.size(); ++i) {
        if (indexOf(other.elements[i]) >= 0) {
            return FALSE;
        }
    }
    return TRUE;
}

UBool UVector::removeAll(const UVector& other) {
    UBool changed = FALSE;
    for (int32_t i=0; i<other.size(); ++i) {
        int32_t j = indexOf(other.elements[i]);
        if (j >= 0) {
            removeElementAt(j);
            changed = TRUE;
        }
    }
    return changed;
}

UBool UVector::retainAll(const UVector& other) {
    UBool changed = FALSE;
    for (int32_t j=size()-1; j>=0; --j) {
        int32_t i = other.indexOf(elements[j]);
        if (i < 0) {
            removeElementAt(j);
            changed = TRUE;
        }
    }
    return changed;
}

void UVector::removeElementAt(int32_t index) {
    void* e = orphanElementAt(index);
    if (e != nullptr && deleter != nullptr) {
        (*deleter)(e);
    }
}

UBool UVector::removeElement(void* obj) {
    int32_t i = indexOf(obj);
    if (i >= 0) {
        removeElementAt(i);
        return TRUE;
    }
    return FALSE;
}

void UVector::removeAllElements(void) {
    if (deleter != nullptr) {
        for (int32_t i=0; i<count; ++i) {
            if (elements[i].pointer != nullptr) {
                (*deleter)(elements[i].pointer);
            }
        }
    }
    count = 0;
}

UBool   UVector::equals(const UVector &other) const {
    int      i;

    if (this->count != other.count) {
        return FALSE;
    }
    if (comparer == nullptr) {
        for (i=0; i<count; i++) {
            if (elements[i].pointer != other.elements[i].pointer) {
                return FALSE;
            }
        }
    } else {
        UElement key;
        for (i=0; i<count; i++) {
            key.pointer = &other.elements[i];
            if (!(*comparer)(key, elements[i])) {
                return FALSE;
            }
        }
    }
    return TRUE;
}



int32_t UVector::indexOf(void* obj, int32_t startIndex) const {
    UElement key;
    key.pointer = obj;
    return indexOf(key, startIndex, HINT_KEY_POINTER);
}

int32_t UVector::indexOf(int32_t obj, int32_t startIndex) const {
    UElement key;
    key.integer = obj;
    return indexOf(key, startIndex, HINT_KEY_INTEGER);
}

int32_t UVector::indexOf(UElement key, int32_t startIndex, int8_t hint) const {
    if (comparer != nullptr) {
        for (int32_t i=startIndex; i<count; ++i) {
            if ((*comparer)(key, elements[i])) {
                return i;
            }
        }
    } else {
        for (int32_t i=startIndex; i<count; ++i) {
            /* Pointers are not always the same size as ints so to perform
             * a valid comparison we need to know whether we are being
             * provided an int or a pointer. */
            if (hint & HINT_KEY_POINTER) {
                if (key.pointer == elements[i].pointer) {
                    return i;
                }
            } else {
                if (key.integer == elements[i].integer) {
                    return i;
                }
            }
        }
    }
    return -1;
}

UBool UVector::ensureCapacity(int32_t minimumCapacity, UErrorCode &status) {
    if (U_FAILURE(status)) {
        return false;
    }
    if (minimumCapacity < 0) {
        status = U_ILLEGAL_ARGUMENT_ERROR;
        return false;
    }
    if (capacity < minimumCapacity) {
        if (capacity > (INT32_MAX - 1) / 2) {         // integer overflow check
            status = U_ILLEGAL_ARGUMENT_ERROR;
            return false;
        }
        int32_t newCap = capacity * 2;
        if (newCap < minimumCapacity) {
            newCap = minimumCapacity;
        }
        if (newCap > (int32_t)(INT32_MAX / sizeof(UElement))) { // integer overflow check
            // We keep the original memory contents on bad minimumCapacity.
            status = U_ILLEGAL_ARGUMENT_ERROR;
            return false;
        }
        UElement* newElems = (UElement *)uprv_realloc(elements, sizeof(UElement)*newCap);
        if (newElems == nullptr) {
            // We keep the original contents on the memory failure on realloc or bad minimumCapacity.
            status = U_MEMORY_ALLOCATION_ERROR;
            return false;
        }
        elements = newElems;
        capacity = newCap;
    }
    return true;
}

/**
 * Change the size of this vector as follows: If newSize is smaller,
 * then truncate the array, possibly deleting held elements for i >=
 * newSize.  If newSize is larger, grow the array, filling in new
 * slots with nullptr.
 */
void UVector::setSize(int32_t newSize, UErrorCode &status) {
    if (!ensureCapacity(newSize, status)) {
        return;
    }
    if (newSize > count) {
        UElement empty;
        empty.pointer = nullptr;
        empty.integer = 0;
        for (int32_t i=count; i<newSize; ++i) {
            elements[i] = empty;
        }
    } else {
        /* Most efficient to count down */
        for (int32_t i=count-1; i>=newSize; --i) {
            removeElementAt(i);
        }
    }
    count = newSize;
}

/**
 * Fill in the given array with all elements of this vector.
 */
void** UVector::toArray(void** result) const {
    void** a = result;
    for (int i=0; i<count; ++i) {
        *a++ = elements[i].pointer;
    }
    return result;
}

UObjectDeleter *UVector::setDeleter(UObjectDeleter *d) {
    UObjectDeleter *old = deleter;
    deleter = d;
    return old;
}

UElementsAreEqual *UVector::setComparer(UElementsAreEqual *d) {
    UElementsAreEqual *old = comparer;
    comparer = d;
    return old;
}

/**
 * Removes the element at the given index from this vector and
 * transfer ownership of it to the caller.  After this call, the
 * caller owns the result and must delete it and the vector entry
 * at 'index' is removed, shifting all subsequent entries back by
 * one index and shortening the size of the vector by one.  If the
 * index is out of range or if there is no item at the given index
 * then 0 is returned and the vector is unchanged.
 */
void* UVector::orphanElementAt(int32_t index) {
    void* e = nullptr;
    if (0 <= index && index < count) {
        e = elements[index].pointer;
        for (int32_t i=index; i<count-1; ++i) {
            elements[i] = elements[i+1];
        }
        --count;
    }
    /* else index out of range */
    return e;
}

/**
 * Insert the given object into this vector at its sorted position
 * as defined by 'compare'.  The current elements are assumed to
 * be sorted already.
 */
void UVector::sortedInsert(void* obj, UElementComparator *compare, UErrorCode& ec) {
    UElement e;
    e.pointer = obj;
    sortedInsert(e, compare, ec);
}

/**
 * Insert the given integer into this vector at its sorted position
 * as defined by 'compare'.  The current elements are assumed to
 * be sorted already.
 */
void UVector::sortedInsert(int32_t obj, UElementComparator *compare, UErrorCode& ec) {
    U_ASSERT(deleter == nullptr);
    UElement e {};
    e.integer = obj;
    sortedInsert(e, compare, ec);
}

// ASSUME elements[] IS CURRENTLY SORTED
void UVector::sortedInsert(UElement e, UElementComparator *compare, UErrorCode& ec) {
    // Perform a binary search for the location to insert tok at.  Tok
    // will be inserted between two elements a and b such that a <=
    // tok && tok < b, where there is a 'virtual' elements[-1] always
    // less than tok and a 'virtual' elements[count] always greater
    // than tok.
    if (!ensureCapacity(count + 1, ec)) {
        if (deleter != nullptr) {
            (*deleter)(e.pointer);
        }
        return;
    }
    int32_t min = 0, max = count;
    while (min != max) {
        int32_t probe = (min + max) / 2;
        int32_t c = (*compare)(elements[probe], e);
        if (c > 0) {
            max = probe;
        } else {
            // assert(c <= 0);
            min = probe + 1;
        }
    }
    for (int32_t i=count; i>min; --i) {
        elements[i] = elements[i-1];
    }
    elements[min] = e;
    ++count;
}

/**
  *  Array sort comparator function.
  *  Used from UVector::sort()
  *  Conforms to function signature required for uprv_sortArray().
  *  This function is essentially just a wrapper, to make a
  *  UVector style comparator function usable with uprv_sortArray().
  *
  *  The context pointer to this function is a pointer back
  *  (with some extra indirection) to the user supplied comparator.
  *  
  */
static int32_t U_CALLCONV
sortComparator(const void *context, const void *left, const void *right) {
    UElementComparator *compare = *static_cast<UElementComparator * const *>(context);
    UElement e1 = *static_cast<const UElement *>(left);
    UElement e2 = *static_cast<const UElement *>(right);
    int32_t result = (*compare)(e1, e2);
    return result;
}


/**
  *  Array sort comparison function for use from UVector::sorti()
  *  Compares int32_t vector elements.
  */
static int32_t U_CALLCONV
sortiComparator(const void * /*context */, const void *left, const void *right) {
    const UElement *e1 = static_cast<const UElement *>(left);
    const UElement *e2 = static_cast<const UElement *>(right);
    int32_t result = e1->integer < e2->integer? -1 :
                     e1->integer == e2->integer? 0 : 1;
    return result;
}

/**
  * Sort the vector, assuming it contains ints.
  *     (A more general sort would take a comparison function, but it's
  *     not clear whether UVector's UElementComparator or
  *     UComparator from uprv_sortAray would be more appropriate.)
  */
void UVector::sorti(UErrorCode &ec) {
    if (U_SUCCESS(ec)) {
        uprv_sortArray(elements, count, sizeof(UElement),
                       sortiComparator, nullptr,  FALSE, &ec);
    }
}


/**
 *  Sort with a user supplied comparator.
 *
 *    The comparator function handling is confusing because the function type
 *    for UVector  (as defined for sortedInsert()) is different from the signature
 *    required by uprv_sortArray().  This is handled by passing the
 *    the UVector sort function pointer via the context pointer to a
 *    sortArray() comparator function, which can then call back to
 *    the original user function.
 *
 *    An additional twist is that it's not safe to pass a pointer-to-function
 *    as  a (void *) data pointer, so instead we pass a (data) pointer to a
 *    pointer-to-function variable.
 */
void UVector::sort(UElementComparator *compare, UErrorCode &ec) {
    if (U_SUCCESS(ec)) {
        uprv_sortArray(elements, count, sizeof(UElement),
                       sortComparator, &compare, FALSE, &ec);
    }
}


/**
 *  Stable sort with a user supplied comparator of type UComparator.
 */
void UVector::sortWithUComparator(UComparator *compare, const void *context, UErrorCode &ec) {
    if (U_SUCCESS(ec)) {
        uprv_sortArray(elements, count, sizeof(UElement),
                       compare, context, TRUE, &ec);
    }
}

U_NAMESPACE_END


Coverage Report

Created: 2024-04-24 06:23

Line	Count	Source (jump to first uncovered line)
1		// © 2016 and later: Unicode, Inc. and others.
2		// License & terms of use: http://www.unicode.org/copyright.html
3		/*
4		******************************************************************************
5		* Copyright (C) 1999-2013, International Business Machines Corporation and
6		* others. All Rights Reserved.
7		******************************************************************************
8		* Date Name Description
9		* 10/22/99 alan Creation.
10		**********************************************************************
11		*/
12
13		#include "uvector.h"
14		#include "cmemory.h"
15		#include "uarrsort.h"
16		#include "uelement.h"
17
18		U_NAMESPACE_BEGIN
19
20		constexpr int32_t DEFAULT_CAPACITY = 8;
21
22		/*
23		* Constants for hinting whether a key is an integer
24		* or a pointer. If a hint bit is zero, then the associated
25		* token is assumed to be an integer. This is needed for iSeries
26		*/
27		constexpr int8_t HINT_KEY_POINTER = 1;
28		constexpr int8_t HINT_KEY_INTEGER = 0;
29
30		UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UVector)
31
32		UVector::UVector(UErrorCode &status) :
33	0	UVector(nullptr, nullptr, DEFAULT_CAPACITY, status) {
34	0	}
35
36		UVector::UVector(int32_t initialCapacity, UErrorCode &status) :
37	0	UVector(nullptr, nullptr, initialCapacity, status) {
38	0	}
39
40		UVector::UVector(UObjectDeleter d, UElementsAreEqual c, UErrorCode &status) :
41	0	UVector(d, c, DEFAULT_CAPACITY, status) {
42	0	}
43
44		UVector::UVector(UObjectDeleter d, UElementsAreEqual c, int32_t initialCapacity, UErrorCode &status) :
45		deleter(d),
46		comparer(c)
47	0	{
48	0	if (U_FAILURE(status)) {
49	0	return;
50	0	}
51		// Fix bogus initialCapacity values; avoid malloc(0) and integer overflow
52	0	if ((initialCapacity < 1) \|\| (initialCapacity > (int32_t)(INT32_MAX / sizeof(UElement)))) {
53	0	initialCapacity = DEFAULT_CAPACITY;
54	0	}
55	0	elements = (UElement )uprv_malloc(sizeof(UElement)initialCapacity);
56	0	if (elements == nullptr) {
57	0	status = U_MEMORY_ALLOCATION_ERROR;
58	0	} else {
59	0	capacity = initialCapacity;
60	0	}
61	0	}
62
63	0	UVector::~UVector() {
64	0	removeAllElements();
65	0	uprv_free(elements);
66	0	elements = nullptr;
67	0	}
68
69		/**
70		* Assign this object to another (make this a copy of 'other').
71		* Use the 'assign' function to assign each element.
72		*/
73	0	void UVector::assign(const UVector& other, UElementAssigner *assign, UErrorCode &ec) {
74	0	if (ensureCapacity(other.count, ec)) {
75	0	setSize(other.count, ec);
76	0	if (U_SUCCESS(ec)) {
77	0	for (int32_t i=0; i<other.count; ++i) {
78	0	if (elements[i].pointer != nullptr && deleter != nullptr) {
79	0	(*deleter)(elements[i].pointer);
80	0	}
81	0	(*assign)(&elements[i], &other.elements[i]);
82	0	}
83	0	}
84	0	}
85	0	}
86
87		// This only does something sensible if this object has a non-null comparer
88	0	bool UVector::operator==(const UVector& other) const {
89	0	U_ASSERT(comparer != nullptr);
90	0	if (count != other.count) return false;
91	0	if (comparer != nullptr) {
92		// Compare using this object's comparer
93	0	for (int32_t i=0; i<count; ++i) {
94	0	if (!(*comparer)(elements[i], other.elements[i])) {
95	0	return false;
96	0	}
97	0	}
98	0	}
99	0	return true;
100	0	}
101
102	0	void UVector::addElement(void* obj, UErrorCode &status) {
103	0	U_ASSERT(deleter == nullptr);
104	0	if (ensureCapacity(count + 1, status)) {
105	0	elements[count++].pointer = obj;
106	0	}
107	0	}
108
109	0	void UVector::adoptElement(void* obj, UErrorCode &status) {
110	0	U_ASSERT(deleter != nullptr);
111	0	if (ensureCapacity(count + 1, status)) {
112	0	elements[count++].pointer = obj;
113	0	} else {
114	0	(*deleter)(obj);
115	0	}
116	0	}
117	0	void UVector::addElement(int32_t elem, UErrorCode &status) {
118	0	U_ASSERT(deleter == nullptr); // Usage error. Mixing up ints and pointers.
119	0	if (ensureCapacity(count + 1, status)) {
120	0	elements[count].pointer = nullptr; // Pointers may be bigger than ints.
121	0	elements[count].integer = elem;
122	0	count++;
123	0	}
124	0	}
125
126	0	void UVector::setElementAt(void* obj, int32_t index) {
127	0	if (0 <= index && index < count) {
128	0	if (elements[index].pointer != nullptr && deleter != nullptr) {
129	0	(*deleter)(elements[index].pointer);
130	0	}
131	0	elements[index].pointer = obj;
132	0	} else {
133		/* index out of range */
134	0	if (deleter != nullptr) {
135	0	(*deleter)(obj);
136	0	}
137	0	}
138	0	}
139
140	0	void UVector::setElementAt(int32_t elem, int32_t index) {
141	0	U_ASSERT(deleter == nullptr); // Usage error. Mixing up ints and pointers.
142	0	if (0 <= index && index < count) {
143	0	elements[index].pointer = nullptr;
144	0	elements[index].integer = elem;
145	0	}
146		/* else index out of range */
147	0	}
148
149	0	void UVector::insertElementAt(void* obj, int32_t index, UErrorCode &status) {
150	0	if (ensureCapacity(count + 1, status)) {
151	0	if (0 <= index && index <= count) {
152	0	for (int32_t i=count; i>index; --i) {
153	0	elements[i] = elements[i-1];
154	0	}
155	0	elements[index].pointer = obj;
156	0	++count;
157	0	} else {
158		/* index out of range */
159	0	status = U_ILLEGAL_ARGUMENT_ERROR;
160	0	}
161	0	}
162	0	if (U_FAILURE(status) && deleter != nullptr) {
163	0	(*deleter)(obj);
164	0	}
165	0	}
166
167	0	void UVector::insertElementAt(int32_t elem, int32_t index, UErrorCode &status) {
168	0	U_ASSERT(deleter == nullptr); // Usage error. Mixing up ints and pointers.
169		// must have 0 <= index <= count
170	0	if (ensureCapacity(count + 1, status)) {
171	0	if (0 <= index && index <= count) {
172	0	for (int32_t i=count; i>index; --i) {
173	0	elements[i] = elements[i-1];
174	0	}
175	0	elements[index].pointer = nullptr;
176	0	elements[index].integer = elem;
177	0	++count;
178	0	} else {
179		/* index out of range */
180	0	status = U_ILLEGAL_ARGUMENT_ERROR;
181	0	}
182	0	}
183	0	}
184
185	0	void* UVector::elementAt(int32_t index) const {
186	0	return (0 <= index && index < count) ? elements[index].pointer : 0;
187	0	}
188
189	0	int32_t UVector::elementAti(int32_t index) const {
190	0	return (0 <= index && index < count) ? elements[index].integer : 0;
191	0	}
192
193	0	UBool UVector::containsAll(const UVector& other) const {
194	0	for (int32_t i=0; i<other.size(); ++i) {
195	0	if (indexOf(other.elements[i]) < 0) {
196	0	return FALSE;
197	0	}
198	0	}
199	0	return TRUE;
200	0	}
201
202	0	UBool UVector::containsNone(const UVector& other) const {
203	0	for (int32_t i=0; i<other.size(); ++i) {
204	0	if (indexOf(other.elements[i]) >= 0) {
205	0	return FALSE;
206	0	}
207	0	}
208	0	return TRUE;
209	0	}
210
211	0	UBool UVector::removeAll(const UVector& other) {
212	0	UBool changed = FALSE;
213	0	for (int32_t i=0; i<other.size(); ++i) {
214	0	int32_t j = indexOf(other.elements[i]);
215	0	if (j >= 0) {
216	0	removeElementAt(j);
217	0	changed = TRUE;
218	0	}
219	0	}
220	0	return changed;
221	0	}
222
223	0	UBool UVector::retainAll(const UVector& other) {
224	0	UBool changed = FALSE;
225	0	for (int32_t j=size()-1; j>=0; --j) {
226	0	int32_t i = other.indexOf(elements[j]);
227	0	if (i < 0) {
228	0	removeElementAt(j);
229	0	changed = TRUE;
230	0	}
231	0	}
232	0	return changed;
233	0	}
234
235	0	void UVector::removeElementAt(int32_t index) {
236	0	void* e = orphanElementAt(index);
237	0	if (e != nullptr && deleter != nullptr) {
238	0	(*deleter)(e);
239	0	}
240	0	}
241
242	0	UBool UVector::removeElement(void* obj) {
243	0	int32_t i = indexOf(obj);
244	0	if (i >= 0) {
245	0	removeElementAt(i);
246	0	return TRUE;
247	0	}
248	0	return FALSE;
249	0	}
250
251	0	void UVector::removeAllElements(void) {
252	0	if (deleter != nullptr) {
253	0	for (int32_t i=0; i<count; ++i) {
254	0	if (elements[i].pointer != nullptr) {
255	0	(*deleter)(elements[i].pointer);
256	0	}
257	0	}
258	0	}
259	0	count = 0;
260	0	}
261
262	0	UBool UVector::equals(const UVector &other) const {
263	0	int i;
264
265	0	if (this->count != other.count) {
266	0	return FALSE;
267	0	}
268	0	if (comparer == nullptr) {
269	0	for (i=0; i<count; i++) {
270	0	if (elements[i].pointer != other.elements[i].pointer) {
271	0	return FALSE;
272	0	}
273	0	}
274	0	} else {
275	0	UElement key;
276	0	for (i=0; i<count; i++) {
277	0	key.pointer = &other.elements[i];
278	0	if (!(*comparer)(key, elements[i])) {
279	0	return FALSE;
280	0	}
281	0	}
282	0	}
283	0	return TRUE;
284	0	}
285
286
287
288	0	int32_t UVector::indexOf(void* obj, int32_t startIndex) const {
289	0	UElement key;
290	0	key.pointer = obj;
291	0	return indexOf(key, startIndex, HINT_KEY_POINTER);
292	0	}
293
294	0	int32_t UVector::indexOf(int32_t obj, int32_t startIndex) const {
295	0	UElement key;
296	0	key.integer = obj;
297	0	return indexOf(key, startIndex, HINT_KEY_INTEGER);
298	0	}
299
300	0	int32_t UVector::indexOf(UElement key, int32_t startIndex, int8_t hint) const {
301	0	if (comparer != nullptr) {
302	0	for (int32_t i=startIndex; i<count; ++i) {
303	0	if ((*comparer)(key, elements[i])) {
304	0	return i;
305	0	}
306	0	}
307	0	} else {
308	0	for (int32_t i=startIndex; i<count; ++i) {
309		/* Pointers are not always the same size as ints so to perform
310		* a valid comparison we need to know whether we are being
311		* provided an int or a pointer. */
312	0	if (hint & HINT_KEY_POINTER) {
313	0	if (key.pointer == elements[i].pointer) {
314	0	return i;
315	0	}
316	0	} else {
317	0	if (key.integer == elements[i].integer) {
318	0	return i;
319	0	}
320	0	}
321	0	}
322	0	}
323	0	return -1;
324	0	}
325
326	0	UBool UVector::ensureCapacity(int32_t minimumCapacity, UErrorCode &status) {
327	0	if (U_FAILURE(status)) {
328	0	return false;
329	0	}
330	0	if (minimumCapacity < 0) {
331	0	status = U_ILLEGAL_ARGUMENT_ERROR;
332	0	return false;
333	0	}
334	0	if (capacity < minimumCapacity) {
335	0	if (capacity > (INT32_MAX - 1) / 2) { // integer overflow check
336	0	status = U_ILLEGAL_ARGUMENT_ERROR;
337	0	return false;
338	0	}
339	0	int32_t newCap = capacity * 2;
340	0	if (newCap < minimumCapacity) {
341	0	newCap = minimumCapacity;
342	0	}
343	0	if (newCap > (int32_t)(INT32_MAX / sizeof(UElement))) { // integer overflow check
344		// We keep the original memory contents on bad minimumCapacity.
345	0	status = U_ILLEGAL_ARGUMENT_ERROR;
346	0	return false;
347	0	}
348	0	UElement* newElems = (UElement )uprv_realloc(elements, sizeof(UElement)newCap);
349	0	if (newElems == nullptr) {
350		// We keep the original contents on the memory failure on realloc or bad minimumCapacity.
351	0	status = U_MEMORY_ALLOCATION_ERROR;
352	0	return false;
353	0	}
354	0	elements = newElems;
355	0	capacity = newCap;
356	0	}
357	0	return true;
358	0	}
359
360		/**
361		* Change the size of this vector as follows: If newSize is smaller,
362		* then truncate the array, possibly deleting held elements for i >=
363		* newSize. If newSize is larger, grow the array, filling in new
364		* slots with nullptr.
365		*/
366	0	void UVector::setSize(int32_t newSize, UErrorCode &status) {
367	0	if (!ensureCapacity(newSize, status)) {
368	0	return;
369	0	}
370	0	if (newSize > count) {
371	0	UElement empty;
372	0	empty.pointer = nullptr;
373	0	empty.integer = 0;
374	0	for (int32_t i=count; i<newSize; ++i) {
375	0	elements[i] = empty;
376	0	}
377	0	} else {
378		/* Most efficient to count down */
379	0	for (int32_t i=count-1; i>=newSize; --i) {
380	0	removeElementAt(i);
381	0	}
382	0	}
383	0	count = newSize;
384	0	}
385
386		/**
387		* Fill in the given array with all elements of this vector.
388		*/
389	0	void UVector::toArray(void result) const {
390	0	void** a = result;
391	0	for (int i=0; i<count; ++i) {
392	0	*a++ = elements[i].pointer;
393	0	}
394	0	return result;
395	0	}
396
397	0	UObjectDeleter UVector::setDeleter(UObjectDeleter d) {
398	0	UObjectDeleter *old = deleter;
399	0	deleter = d;
400	0	return old;
401	0	}
402
403	0	UElementsAreEqual UVector::setComparer(UElementsAreEqual d) {
404	0	UElementsAreEqual *old = comparer;
405	0	comparer = d;
406	0	return old;
407	0	}
408
409		/**
410		* Removes the element at the given index from this vector and
411		* transfer ownership of it to the caller. After this call, the
412		* caller owns the result and must delete it and the vector entry
413		* at 'index' is removed, shifting all subsequent entries back by
414		* one index and shortening the size of the vector by one. If the
415		* index is out of range or if there is no item at the given index
416		* then 0 is returned and the vector is unchanged.
417		*/
418	0	void* UVector::orphanElementAt(int32_t index) {
419	0	void* e = nullptr;
420	0	if (0 <= index && index < count) {
421	0	e = elements[index].pointer;
422	0	for (int32_t i=index; i<count-1; ++i) {
423	0	elements[i] = elements[i+1];
424	0	}
425	0	--count;
426	0	}
427		/* else index out of range */
428	0	return e;
429	0	}
430
431		/**
432		* Insert the given object into this vector at its sorted position
433		* as defined by 'compare'. The current elements are assumed to
434		* be sorted already.
435		*/
436	0	void UVector::sortedInsert(void* obj, UElementComparator *compare, UErrorCode& ec) {
437	0	UElement e;
438	0	e.pointer = obj;
439	0	sortedInsert(e, compare, ec);
440	0	}
441
442		/**
443		* Insert the given integer into this vector at its sorted position
444		* as defined by 'compare'. The current elements are assumed to
445		* be sorted already.
446		*/
447	0	void UVector::sortedInsert(int32_t obj, UElementComparator *compare, UErrorCode& ec) {
448	0	U_ASSERT(deleter == nullptr);
449	0	UElement e {};
450	0	e.integer = obj;
451	0	sortedInsert(e, compare, ec);
452	0	}
453
454		// ASSUME elements[] IS CURRENTLY SORTED
455	0	void UVector::sortedInsert(UElement e, UElementComparator *compare, UErrorCode& ec) {
456		// Perform a binary search for the location to insert tok at. Tok
457		// will be inserted between two elements a and b such that a <=
458		// tok && tok < b, where there is a 'virtual' elements[-1] always
459		// less than tok and a 'virtual' elements[count] always greater
460		// than tok.
461	0	if (!ensureCapacity(count + 1, ec)) {
462	0	if (deleter != nullptr) {
463	0	(*deleter)(e.pointer);
464	0	}
465	0	return;
466	0	}
467	0	int32_t min = 0, max = count;
468	0	while (min != max) {
469	0	int32_t probe = (min + max) / 2;
470	0	int32_t c = (*compare)(elements[probe], e);
471	0	if (c > 0) {
472	0	max = probe;
473	0	} else {
474		// assert(c <= 0);
475	0	min = probe + 1;
476	0	}
477	0	}
478	0	for (int32_t i=count; i>min; --i) {
479	0	elements[i] = elements[i-1];
480	0	}
481	0	elements[min] = e;
482	0	++count;
483	0	}
484
485		/**
486		* Array sort comparator function.
487		* Used from UVector::sort()
488		* Conforms to function signature required for uprv_sortArray().
489		* This function is essentially just a wrapper, to make a
490		* UVector style comparator function usable with uprv_sortArray().
491		*
492		* The context pointer to this function is a pointer back
493		* (with some extra indirection) to the user supplied comparator.
494		*
495		*/
496		static int32_t U_CALLCONV
497	0	sortComparator(const void context, const void left, const void *right) {
498	0	UElementComparator compare = static_cast<UElementComparator * const *>(context);
499	0	UElement e1 = static_cast<const UElement >(left);
500	0	UElement e2 = static_cast<const UElement >(right);
501	0	int32_t result = (*compare)(e1, e2);
502	0	return result;
503	0	}
504
505
506		/**
507		* Array sort comparison function for use from UVector::sorti()
508		* Compares int32_t vector elements.
509		*/
510		static int32_t U_CALLCONV
511	0	sortiComparator(const void * /context /, const void left, const void right) {
512	0	const UElement e1 = static_cast<const UElement >(left);
513	0	const UElement e2 = static_cast<const UElement >(right);
514	0	int32_t result = e1->integer < e2->integer? -1 :
515	0	e1->integer == e2->integer? 0 : 1;
516	0	return result;
517	0	}
518
519		/**
520		* Sort the vector, assuming it contains ints.
521		* (A more general sort would take a comparison function, but it's
522		* not clear whether UVector's UElementComparator or
523		* UComparator from uprv_sortAray would be more appropriate.)
524		*/
525	0	void UVector::sorti(UErrorCode &ec) {
526	0	if (U_SUCCESS(ec)) {
527	0	uprv_sortArray(elements, count, sizeof(UElement),
528	0	sortiComparator, nullptr, FALSE, &ec);
529	0	}
530	0	}
531
532
533		/**
534		* Sort with a user supplied comparator.
535		*
536		* The comparator function handling is confusing because the function type
537		* for UVector (as defined for sortedInsert()) is different from the signature
538		* required by uprv_sortArray(). This is handled by passing the
539		* the UVector sort function pointer via the context pointer to a
540		* sortArray() comparator function, which can then call back to
541		* the original user function.
542		*
543		* An additional twist is that it's not safe to pass a pointer-to-function
544		* as a (void *) data pointer, so instead we pass a (data) pointer to a
545		* pointer-to-function variable.
546		*/
547	0	void UVector::sort(UElementComparator *compare, UErrorCode &ec) {
548	0	if (U_SUCCESS(ec)) {
549	0	uprv_sortArray(elements, count, sizeof(UElement),
550	0	sortComparator, &compare, FALSE, &ec);
551	0	}
552	0	}
553
554
555		/**
556		* Stable sort with a user supplied comparator of type UComparator.
557		*/
558	0	void UVector::sortWithUComparator(UComparator compare, const void context, UErrorCode &ec) {
559	0	if (U_SUCCESS(ec)) {
560	0	uprv_sortArray(elements, count, sizeof(UElement),
561	0	compare, context, TRUE, &ec);
562	0	}
563	0	}
564
565		U_NAMESPACE_END
566