54 lines
1.3 KiB
V
54 lines
1.3 KiB
V
module builtin
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pub struct array {
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pub:
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data voidptr
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len int
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cap int
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element_size int
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}
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// for now off the stack
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fn new_array_from_c_array(len int, cap int, elm_size int, c_array voidptr) array {
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arr := array{
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len: len
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cap: cap
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element_size: elm_size
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data: c_array
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}
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return arr
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}
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// Private function. Used to implement array[] operator
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fn (a array) get(i int) voidptr {
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if i < 0 || i >= a.len {
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panic('array.get: index out of range') // FIXME: (i == $i, a.len == $a.len)')
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}
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return a.data + i * a.element_size
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}
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// Private function. Used to implement assigment to the array element.
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fn (mut a array) set(i int, val voidptr) {
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if i < 0 || i >= a.len {
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panic('array.set: index out of range') // FIXME: (i == $i, a.len == $a.len)')
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}
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mem_copy(a.data + a.element_size * i, val, a.element_size)
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}
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// array.repeat returns new array with the given array elements
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// repeated `nr_repeat` times
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pub fn (a array) repeat(nr_repeats int) array {
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assert nr_repeats >= 0
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arr := array{
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len: nr_repeats * a.len
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cap: nr_repeats * a.len
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element_size: a.element_size
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data: malloc(nr_repeats * a.len * a.element_size)
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}
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for i in 0 .. nr_repeats {
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mem_copy(arr.data + i * a.len * a.element_size, a.data, a.len * a.element_size)
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}
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return arr
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}
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