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#include "wasm-vector.h"
#include <memory.h>
#define INITIAL_VECTOR_CAPACITY 8
static WasmResult ensure_capacity(void** data,
size_t* capacity,
size_t desired_size,
size_t elt_byte_size) {
if (desired_size > *capacity) {
size_t new_capacity = *capacity ? *capacity * 2 : INITIAL_VECTOR_CAPACITY;
while (new_capacity < desired_size)
new_capacity *= 2;
size_t new_byte_size = new_capacity * elt_byte_size;
*data = realloc(*data, new_byte_size);
if (*data == NULL)
return WASM_ERROR;
*capacity = new_capacity;
}
return WASM_OK;
}
void* append_element(void** data,
size_t* size,
size_t* capacity,
size_t elt_byte_size) {
if (ensure_capacity(data, capacity, *size + 1, elt_byte_size) == WASM_ERROR)
return NULL;
return *data + (*size)++ * elt_byte_size;
}
WasmResult extend_elements(void** dst,
size_t* dst_size,
size_t* dst_capacity,
const void** src,
size_t src_size,
size_t elt_byte_size) {
WasmResult result =
ensure_capacity(dst, dst_capacity, *dst_size + src_size, elt_byte_size);
if (result != WASM_OK)
return result;
memcpy(*dst + (*dst_size * elt_byte_size), *src, src_size * elt_byte_size);
*dst_size += src_size;
return result;
}
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