mgba/include/mgba-util/vector.h

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/* Copyright (c) 2013-2015 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef VECTOR_H
#define VECTOR_H
#include <mgba-util/common.h>
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CXX_GUARD_START
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#define DECLARE_VECTOR(NAME, TYPE) \
struct NAME { \
TYPE* vector; \
size_t size; \
size_t capacity; \
}; \
void NAME ## Init(struct NAME* vector, size_t capacity); \
void NAME ## Deinit(struct NAME* vector); \
TYPE* NAME ## GetPointer(struct NAME* vector, size_t location); \
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TYPE const* NAME ## GetConstPointer(const struct NAME* vector, size_t location); \
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TYPE* NAME ## Append(struct NAME* vector); \
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void NAME ## Clear(struct NAME* vector); \
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void NAME ## Resize(struct NAME* vector, ssize_t change); \
void NAME ## Shift(struct NAME* vector, size_t location, size_t difference); \
void NAME ## Unshift(struct NAME* vector, size_t location, size_t difference); \
void NAME ## EnsureCapacity(struct NAME* vector, size_t capacity); \
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size_t NAME ## Size(const struct NAME* vector); \
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size_t NAME ## Index(const struct NAME* vector, const TYPE* member); \
void NAME ## Copy(struct NAME* dest, const struct NAME* src);
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#define DEFINE_VECTOR(NAME, TYPE) \
void NAME ## Init(struct NAME* vector, size_t capacity) { \
vector->size = 0; \
if (capacity == 0) { \
capacity = 4; \
} \
vector->capacity = capacity; \
vector->vector = malloc(sizeof(TYPE) * capacity); \
} \
void NAME ## Deinit(struct NAME* vector) { \
free(vector->vector); \
vector->vector = 0; \
vector->capacity = 0; \
} \
TYPE* NAME ## GetPointer(struct NAME* vector, size_t location) { \
return &vector->vector[location]; \
} \
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TYPE const* NAME ## GetConstPointer(const struct NAME* vector, size_t location) { \
return &vector->vector[location]; \
} \
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TYPE* NAME ## Append(struct NAME* vector) { \
NAME ## Resize(vector, 1); \
return &vector->vector[vector->size - 1]; \
} \
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void NAME ## Resize(struct NAME* vector, ssize_t change) { \
if (change > 0) { \
NAME ## EnsureCapacity(vector, vector->size + change); \
} \
vector->size += change; \
} \
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void NAME ## Clear(struct NAME* vector) { \
vector->size = 0; \
} \
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void NAME ## EnsureCapacity(struct NAME* vector, size_t capacity) { \
if (capacity <= vector->capacity) { \
return; \
} \
while (capacity > vector->capacity) { \
vector->capacity <<= 1; \
} \
vector->vector = realloc(vector->vector, vector->capacity * sizeof(TYPE)); \
} \
void NAME ## Shift(struct NAME* vector, size_t location, size_t difference) { \
memmove(&vector->vector[location], &vector->vector[location + difference], (vector->size - location - difference) * sizeof(TYPE)); \
vector->size -= difference; \
} \
void NAME ## Unshift(struct NAME* vector, size_t location, size_t difference) { \
NAME ## Resize(vector, difference); \
memmove(&vector->vector[location + difference], &vector->vector[location], (vector->size - location - difference) * sizeof(TYPE)); \
} \
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size_t NAME ## Size(const struct NAME* vector) { \
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return vector->size; \
} \
size_t NAME ## Index(const struct NAME* vector, const TYPE* member) { \
return member - (const TYPE*) vector->vector; \
} \
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void NAME ## Copy(struct NAME* dest, const struct NAME* src) { \
NAME ## EnsureCapacity(dest, src->size); \
memcpy(dest->vector, src->vector, src->size * sizeof(TYPE)); \
dest->size = src->size; \
} \
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CXX_GUARD_END
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#endif