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#include "array.h"
#include "crash.h"
#include <string.h>
#define CRASH_IF_OOB(array, idx) {\
if (idx >= array->length)\
crash("Array access out of bounds: %ld >= %ld\n", idx, array->length);\
}
void* array_at(const array_t* array, size_t idx) {
CRASH_IF_OOB(array, idx);
return (char*)array->__data + idx*array->elemsz;
}
char* str_at(const str_t* str, size_t idx) {
CRASH_IF_OOB(str, idx);
return str->__data + idx;
}
str_t str_slice(const str_t* str, size_t start, size_t length) {
CRASH_IF_OOB(str, start + length - 1);
str_t slice = {.length = length, .__data = str->__data + start};
return slice;
}
void str_c_str(
char* dst,
size_t dst_size,
const str_t* src
) {
if (src->length >= dst_size)
crash(
"String is too long to hold in C string buffer: %ld >= %ld\n",
src->length,
dst_size);
memmove(dst, src->__data, src->length);
dst[src->length] = 0;
}
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