2021-01-18 15:20:06 +03:00
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// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
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2019-06-23 05:21:30 +03:00
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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2019-06-22 21:20:28 +03:00
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module builtin
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2020-04-26 08:06:33 +03:00
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import strings
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2019-08-11 00:02:48 +03:00
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2020-12-15 11:31:35 +03:00
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// array is a struct used for denoting array types in V
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2020-01-12 21:59:57 +03:00
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pub struct array {
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2019-07-21 13:43:47 +03:00
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pub:
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2020-12-15 11:31:35 +03:00
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element_size int // size in bytes of one element in the array.
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2020-04-27 23:53:26 +03:00
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pub mut:
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2021-05-27 15:50:06 +03:00
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data voidptr
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offset int // in bytes (should be `size_t`)
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len int // length of the array.
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cap int // capacity of the array.
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2019-06-22 21:20:28 +03:00
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}
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2020-12-15 11:31:35 +03:00
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// array.data uses a void pointer, which allows implementing arrays without generics and without generating
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// extra code for every type.
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2020-01-02 22:09:15 +03:00
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// Internal function, used by V (`nums := []int`)
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2020-04-25 09:42:23 +03:00
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fn __new_array(mylen int, cap int, elm_size int) array {
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2020-05-07 23:41:41 +03:00
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cap_ := if cap < mylen { mylen } else { cap }
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2019-12-18 20:07:32 +03:00
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arr := array{
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2020-05-18 18:05:48 +03:00
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element_size: elm_size
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data: vcalloc(cap_ * elm_size)
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2020-05-18 22:38:06 +03:00
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len: mylen
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cap: cap_
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2019-06-22 21:20:28 +03:00
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}
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return arr
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}
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2020-04-15 21:12:06 +03:00
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2020-05-16 16:21:37 +03:00
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fn __new_array_with_default(mylen int, cap int, elm_size int, val voidptr) array {
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cap_ := if cap < mylen { mylen } else { cap }
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2020-07-03 19:10:10 +03:00
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mut arr := array{
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2020-05-18 18:05:48 +03:00
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element_size: elm_size
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data: vcalloc(cap_ * elm_size)
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2020-05-18 22:38:06 +03:00
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len: mylen
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cap: cap_
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2020-05-16 16:21:37 +03:00
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}
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if val != 0 {
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2020-10-15 13:32:28 +03:00
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for i in 0 .. arr.len {
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2020-12-23 21:13:42 +03:00
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unsafe { arr.set_unsafe(i, val) }
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2020-05-16 16:21:37 +03:00
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}
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}
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return arr
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}
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2020-06-12 02:24:25 +03:00
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fn __new_array_with_array_default(mylen int, cap int, elm_size int, val array) array {
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cap_ := if cap < mylen { mylen } else { cap }
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2020-07-03 19:10:10 +03:00
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mut arr := array{
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2020-06-12 02:24:25 +03:00
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element_size: elm_size
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data: vcalloc(cap_ * elm_size)
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len: mylen
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cap: cap_
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}
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2020-10-15 13:32:28 +03:00
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for i in 0 .. arr.len {
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2020-06-12 02:24:25 +03:00
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val_clone := val.clone()
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2020-12-23 21:13:42 +03:00
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unsafe { arr.set_unsafe(i, &val_clone) }
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2020-06-12 02:24:25 +03:00
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}
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return arr
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}
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2019-06-22 21:20:28 +03:00
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// Private function, used by V (`nums := [1, 2, 3]`)
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2020-10-15 13:32:28 +03:00
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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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2020-05-07 23:41:41 +03:00
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cap_ := if cap < len { len } else { cap }
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2019-12-18 20:07:32 +03:00
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arr := array{
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2020-05-18 18:05:48 +03:00
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element_size: elm_size
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data: vcalloc(cap_ * elm_size)
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2020-05-18 22:38:06 +03:00
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len: len
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cap: cap_
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2019-06-22 21:20:28 +03:00
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}
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// TODO Write all memory functions (like memcpy) in V
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2020-12-23 21:13:42 +03:00
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unsafe { C.memcpy(arr.data, c_array, len * elm_size) }
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2019-06-22 21:20:28 +03:00
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return arr
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}
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// Private function, used by V (`nums := [1, 2, 3] !`)
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2020-10-15 13:32:28 +03:00
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fn new_array_from_c_array_no_alloc(len int, cap int, elm_size int, c_array voidptr) array {
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2019-12-18 20:07:32 +03:00
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arr := array{
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2020-05-18 18:05:48 +03:00
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element_size: elm_size
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data: c_array
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2020-05-18 22:38:06 +03:00
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len: len
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cap: cap
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2019-06-22 21:20:28 +03:00
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}
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return arr
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}
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2020-11-30 20:51:00 +03:00
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// Private function. Doubles array capacity if needed.
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2020-05-17 14:51:18 +03:00
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fn (mut a array) ensure_cap(required int) {
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2020-01-19 15:11:58 +03:00
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if required <= a.cap {
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return
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2019-10-31 21:50:20 +03:00
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}
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2020-12-19 22:35:53 +03:00
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mut cap := if a.cap > 0 { a.cap } else { 2 }
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2020-01-19 15:11:58 +03:00
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for required > cap {
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cap *= 2
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}
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2020-12-19 22:35:53 +03:00
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new_size := cap * a.element_size
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2021-05-27 15:50:06 +03:00
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new_data := vcalloc(new_size)
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if a.data != voidptr(0) {
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unsafe { C.memcpy(new_data, a.data, a.len * a.element_size) }
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// TODO: the old data may be leaked when no GC is used (ref-counting?)
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2020-01-19 15:11:58 +03:00
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}
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2021-05-27 15:50:06 +03:00
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a.data = new_data
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a.offset = 0
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2020-01-19 15:11:58 +03:00
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a.cap = cap
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2019-10-31 21:50:20 +03:00
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}
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2020-11-30 20:51:00 +03:00
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// repeat returns a new array with the given array elements repeated given times.
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2021-06-08 23:23:28 +03:00
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// `cgen` will replace this with an apropriate call to `repeat_to_depth()`
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2021-06-09 12:52:30 +03:00
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// This is a dummy placeholder that will be overridden by `cgen` with an appropriate
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// call to `repeat_to_depth()`. However the `checker` needs it here.
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2020-02-29 17:25:49 +03:00
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pub fn (a array) repeat(count int) array {
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2021-06-08 23:23:28 +03:00
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return unsafe { a.repeat_to_depth(count, 0) }
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}
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// version of `repeat()` that handles multi dimensional arrays
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// `unsafe` to call directly because `depth` is not checked
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[unsafe]
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pub fn (a array) repeat_to_depth(count int, depth int) array {
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2020-02-29 17:25:49 +03:00
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if count < 0 {
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panic('array.repeat: count is negative: $count')
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2019-10-31 21:50:20 +03:00
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}
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2020-02-29 17:25:49 +03:00
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mut size := count * a.len * a.element_size
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2019-12-16 22:22:04 +03:00
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if size == 0 {
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size = a.element_size
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}
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2019-12-18 20:07:32 +03:00
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arr := array{
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2020-05-18 18:05:48 +03:00
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element_size: a.element_size
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data: vcalloc(size)
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2020-05-18 22:38:06 +03:00
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len: count * a.len
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cap: count * a.len
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2019-09-14 23:48:30 +03:00
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}
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2021-06-09 12:52:30 +03:00
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if a.len > 0 {
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for i in 0 .. count {
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if depth > 0 {
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ary_clone := unsafe { a.clone_to_depth(depth) }
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unsafe { C.memcpy(arr.get_unsafe(i * a.len), &byte(ary_clone.data), a.len * a.element_size) }
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} else {
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unsafe { C.memcpy(arr.get_unsafe(i * a.len), &byte(a.data), a.len * a.element_size) }
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}
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2020-06-12 12:42:26 +03:00
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}
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2019-09-14 23:48:30 +03:00
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}
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return arr
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}
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2021-02-05 18:51:45 +03:00
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// sort_with_compare sorts array in-place using given `compare` function as comparator.
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2020-05-17 14:51:18 +03:00
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pub fn (mut a array) sort_with_compare(compare voidptr) {
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2021-04-14 08:50:50 +03:00
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$if freestanding {
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panic('sort does not work with -freestanding')
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} $else {
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C.qsort(mut a.data, a.len, a.element_size, compare)
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}
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2019-06-22 21:20:28 +03:00
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}
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2020-11-30 20:51:00 +03:00
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// insert inserts a value in the array at index `i`
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2020-05-17 14:51:18 +03:00
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pub fn (mut a array) insert(i int, val voidptr) {
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2020-10-15 13:32:28 +03:00
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$if !no_bounds_checking ? {
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2020-02-16 18:13:45 +03:00
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if i < 0 || i > a.len {
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panic('array.insert: index out of range (i == $i, a.len == $a.len)')
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}
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2019-06-22 21:20:28 +03:00
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}
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2019-10-31 21:50:20 +03:00
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a.ensure_cap(a.len + 1)
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2020-07-03 19:10:10 +03:00
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unsafe {
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C.memmove(a.get_unsafe(i + 1), a.get_unsafe(i), (a.len - i) * a.element_size)
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a.set_unsafe(i, val)
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}
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2019-10-31 21:50:20 +03:00
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a.len++
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2019-06-22 21:20:28 +03:00
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}
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2020-11-30 20:51:00 +03:00
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// insert_many inserts many values into the array from index `i`.
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2021-02-27 00:55:09 +03:00
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[unsafe]
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2020-06-18 13:08:11 +03:00
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pub fn (mut a array) insert_many(i int, val voidptr, size int) {
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2020-10-15 13:32:28 +03:00
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$if !no_bounds_checking ? {
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2020-06-18 13:08:11 +03:00
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if i < 0 || i > a.len {
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panic('array.insert_many: index out of range (i == $i, a.len == $a.len)')
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}
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}
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a.ensure_cap(a.len + size)
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elem_size := a.element_size
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2020-07-03 19:10:10 +03:00
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unsafe {
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iptr := a.get_unsafe(i)
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C.memmove(a.get_unsafe(i + size), iptr, (a.len - i) * elem_size)
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C.memcpy(iptr, val, size * elem_size)
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}
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2020-06-18 13:08:11 +03:00
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a.len += size
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}
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2020-11-30 20:51:00 +03:00
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// prepend prepends one value to the array.
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2020-05-17 14:51:18 +03:00
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pub fn (mut a array) prepend(val voidptr) {
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2019-06-22 21:20:28 +03:00
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a.insert(0, val)
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}
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2020-11-30 20:51:00 +03:00
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// prepend_many prepends another array to this array.
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2021-02-27 00:55:09 +03:00
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[unsafe]
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2020-06-18 13:08:11 +03:00
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pub fn (mut a array) prepend_many(val voidptr, size int) {
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2021-02-27 00:55:09 +03:00
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unsafe { a.insert_many(0, val, size) }
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2020-06-18 13:08:11 +03:00
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}
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2020-11-30 20:51:00 +03:00
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// delete deletes array element at index `i`.
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2020-05-17 14:51:18 +03:00
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pub fn (mut a array) delete(i int) {
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2020-10-15 13:32:28 +03:00
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$if !no_bounds_checking ? {
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2020-02-16 18:13:45 +03:00
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if i < 0 || i >= a.len {
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panic('array.delete: index out of range (i == $i, a.len == $a.len)')
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}
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2019-10-31 21:50:20 +03:00
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}
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2020-06-12 02:24:25 +03:00
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// NB: if a is [12,34], a.len = 2, a.delete(0)
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2020-05-24 11:10:41 +03:00
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// should move (2-0-1) elements = 1 element (the 34) forward
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2020-12-23 21:13:42 +03:00
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unsafe { C.memmove(a.get_unsafe(i), a.get_unsafe(i + 1), (a.len - i - 1) * a.element_size) }
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2019-06-22 21:20:28 +03:00
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a.len--
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}
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2020-11-30 20:51:00 +03:00
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// clear clears the array without deallocating the allocated data.
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2020-05-17 14:51:18 +03:00
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pub fn (mut a array) clear() {
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2020-01-28 00:31:48 +03:00
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a.len = 0
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}
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2020-11-30 20:51:00 +03:00
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// trim trims the array length to "index" without modifying the allocated data. If "index" is greater
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// than len nothing will be changed.
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2020-05-17 14:51:18 +03:00
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pub fn (mut a array) trim(index int) {
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2020-02-17 22:31:40 +03:00
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if index < a.len {
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a.len = index
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}
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}
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2020-07-03 19:10:10 +03:00
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// we manually inline this for single operations for performance without -prod
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2021-03-05 08:17:57 +03:00
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[inline; unsafe]
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2020-07-03 19:10:10 +03:00
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fn (a array) get_unsafe(i int) voidptr {
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unsafe {
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2021-04-05 21:39:32 +03:00
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return &byte(a.data) + i * a.element_size
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2020-07-03 19:10:10 +03:00
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}
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}
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2020-11-30 20:51:00 +03:00
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// Private function. Used to implement array[] operator.
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2019-10-09 23:38:33 +03:00
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fn (a array) get(i int) voidptr {
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2020-10-15 13:32:28 +03:00
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$if !no_bounds_checking ? {
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2020-02-16 18:13:45 +03:00
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if i < 0 || i >= a.len {
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panic('array.get: index out of range (i == $i, a.len == $a.len)')
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}
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2019-10-09 23:38:33 +03:00
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}
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2020-07-03 19:10:10 +03:00
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unsafe {
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2021-04-05 21:39:32 +03:00
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return &byte(a.data) + i * a.element_size
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2020-07-03 19:10:10 +03:00
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}
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2019-10-09 23:38:33 +03:00
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}
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2021-01-19 08:06:57 +03:00
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// Private function. Used to implement x = a[i] or { ... }
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fn (a array) get_with_check(i int) voidptr {
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if i < 0 || i >= a.len {
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return 0
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}
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unsafe {
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2021-04-05 21:39:32 +03:00
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return &byte(a.data) + i * a.element_size
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2021-01-19 08:06:57 +03:00
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}
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}
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2020-11-30 20:51:00 +03:00
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// first returns the first element of the array.
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2019-06-27 14:14:59 +03:00
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pub fn (a array) first() voidptr {
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2020-10-15 13:32:28 +03:00
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$if !no_bounds_checking ? {
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2020-02-16 18:13:45 +03:00
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if a.len == 0 {
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panic('array.first: array is empty')
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}
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2019-06-22 21:20:28 +03:00
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}
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2020-04-02 16:31:44 +03:00
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return a.data
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// last returns the last element of the array.
|
2019-06-27 14:14:59 +03:00
|
|
|
pub fn (a array) last() voidptr {
|
2020-10-15 13:32:28 +03:00
|
|
|
$if !no_bounds_checking ? {
|
2020-02-16 18:13:45 +03:00
|
|
|
if a.len == 0 {
|
|
|
|
panic('array.last: array is empty')
|
|
|
|
}
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
2020-07-03 19:10:10 +03:00
|
|
|
unsafe {
|
2021-04-05 21:39:32 +03:00
|
|
|
return &byte(a.data) + (a.len - 1) * a.element_size
|
2020-07-03 19:10:10 +03:00
|
|
|
}
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// pop returns the last element of the array, and removes it.
|
2020-07-14 19:55:44 +03:00
|
|
|
pub fn (mut a array) pop() voidptr {
|
|
|
|
// in a sense, this is the opposite of `a << x`
|
2020-10-15 13:32:28 +03:00
|
|
|
$if !no_bounds_checking ? {
|
2020-07-14 19:55:44 +03:00
|
|
|
if a.len == 0 {
|
|
|
|
panic('array.pop: array is empty')
|
|
|
|
}
|
|
|
|
}
|
|
|
|
new_len := a.len - 1
|
2021-04-12 16:01:03 +03:00
|
|
|
last_elem := unsafe { &byte(a.data) + new_len * a.element_size }
|
2020-07-14 19:55:44 +03:00
|
|
|
a.len = new_len
|
|
|
|
// NB: a.cap is not changed here *on purpose*, so that
|
|
|
|
// further << ops on that array will be more efficient.
|
2021-02-14 21:31:42 +03:00
|
|
|
return unsafe { memdup(last_elem, a.element_size) }
|
2020-07-14 19:55:44 +03:00
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// delete_last efficiently deletes the last element of the array.
|
2020-10-24 00:04:22 +03:00
|
|
|
pub fn (mut a array) delete_last() {
|
|
|
|
// copy pasting code for performance
|
|
|
|
$if !no_bounds_checking ? {
|
|
|
|
if a.len == 0 {
|
|
|
|
panic('array.pop: array is empty')
|
|
|
|
}
|
|
|
|
}
|
|
|
|
a.len--
|
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// slice returns an array using the same buffer as original array
|
2019-11-01 00:37:24 +03:00
|
|
|
// but starting from the `start` element and ending with the element before
|
|
|
|
// the `end` element of the original array with the length and capacity
|
2019-10-31 21:50:20 +03:00
|
|
|
// set to the number of the elements in the slice.
|
2020-10-15 13:32:28 +03:00
|
|
|
fn (a array) slice(start int, _end int) array {
|
2019-12-17 01:29:40 +03:00
|
|
|
mut end := _end
|
2020-10-15 13:32:28 +03:00
|
|
|
$if !no_bounds_checking ? {
|
2020-02-16 18:13:45 +03:00
|
|
|
if start > end {
|
|
|
|
panic('array.slice: invalid slice index ($start > $end)')
|
|
|
|
}
|
|
|
|
if end > a.len {
|
|
|
|
panic('array.slice: slice bounds out of range ($end >= $a.len)')
|
|
|
|
}
|
|
|
|
if start < 0 {
|
|
|
|
panic('array.slice: slice bounds out of range ($start < 0)')
|
|
|
|
}
|
2019-12-17 01:29:40 +03:00
|
|
|
}
|
2021-05-27 15:50:06 +03:00
|
|
|
offset := start * a.element_size
|
|
|
|
data := unsafe { &byte(a.data) + offset }
|
2019-12-17 01:29:40 +03:00
|
|
|
l := end - start
|
2019-12-18 20:07:32 +03:00
|
|
|
res := array{
|
2019-12-17 01:29:40 +03:00
|
|
|
element_size: a.element_size
|
2020-07-03 19:10:10 +03:00
|
|
|
data: data
|
2021-05-27 15:50:06 +03:00
|
|
|
offset: a.offset + offset
|
2019-12-17 01:29:40 +03:00
|
|
|
len: l
|
|
|
|
cap: l
|
|
|
|
}
|
|
|
|
return res
|
|
|
|
}
|
|
|
|
|
2020-01-08 12:19:12 +03:00
|
|
|
// used internally for [2..4]
|
2020-10-15 13:32:28 +03:00
|
|
|
fn (a array) slice2(start int, _end int, end_max bool) array {
|
2020-01-08 12:19:12 +03:00
|
|
|
end := if end_max { a.len } else { _end }
|
|
|
|
return a.slice(start, end)
|
|
|
|
}
|
|
|
|
|
2021-06-09 12:52:30 +03:00
|
|
|
// `clone_static_to_depth()` returns an independent copy of a given array.
|
|
|
|
// Unlike `clone_to_depth()` it has a value receiver and is used internally
|
|
|
|
// for slice-clone expressions like `a[2..4].clone()` and in -autofree generated code.
|
2021-06-08 23:23:28 +03:00
|
|
|
fn (a array) clone_static_to_depth(depth int) array {
|
|
|
|
return unsafe { a.clone_to_depth(depth) }
|
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// clone returns an independent copy of a given array.
|
2021-06-08 23:23:28 +03:00
|
|
|
// this will be overwritten by `cgen` with an apropriate call to `.clone_to_depth()`
|
2021-06-09 12:52:30 +03:00
|
|
|
// However the `checker` needs it here.
|
2020-03-11 01:21:26 +03:00
|
|
|
pub fn (a &array) clone() array {
|
2021-06-08 23:23:28 +03:00
|
|
|
return unsafe { a.clone_to_depth(0) }
|
|
|
|
}
|
|
|
|
|
|
|
|
// recursively clone given array - `unsafe` when called directly because depth is not checked
|
|
|
|
[unsafe]
|
|
|
|
pub fn (a &array) clone_to_depth(depth int) array {
|
2020-01-08 12:19:12 +03:00
|
|
|
mut size := a.cap * a.element_size
|
|
|
|
if size == 0 {
|
|
|
|
size++
|
|
|
|
}
|
2020-07-03 19:10:10 +03:00
|
|
|
mut arr := array{
|
2020-05-18 18:05:48 +03:00
|
|
|
element_size: a.element_size
|
|
|
|
data: vcalloc(size)
|
2020-05-18 22:38:06 +03:00
|
|
|
len: a.len
|
|
|
|
cap: a.cap
|
2020-01-08 12:19:12 +03:00
|
|
|
}
|
2020-06-19 14:32:55 +03:00
|
|
|
// Recursively clone-generated elements if array element is array type
|
2021-06-08 23:23:28 +03:00
|
|
|
if depth > 0 {
|
2020-10-15 13:32:28 +03:00
|
|
|
for i in 0 .. a.len {
|
2020-06-19 14:32:55 +03:00
|
|
|
ar := array{}
|
2021-06-08 23:23:28 +03:00
|
|
|
unsafe { C.memcpy(&ar, a.get_unsafe(i), int(sizeof(array))) }
|
|
|
|
ar_clone := unsafe { ar.clone_to_depth(depth - 1) }
|
2020-12-23 21:13:42 +03:00
|
|
|
unsafe { arr.set_unsafe(i, &ar_clone) }
|
2020-06-19 14:32:55 +03:00
|
|
|
}
|
2021-06-08 23:23:28 +03:00
|
|
|
return arr
|
|
|
|
} else {
|
|
|
|
if !isnil(a.data) {
|
|
|
|
unsafe { C.memcpy(&byte(arr.data), a.data, a.cap * a.element_size) }
|
2020-12-14 08:34:47 +03:00
|
|
|
}
|
2021-06-08 23:23:28 +03:00
|
|
|
return arr
|
2020-06-19 14:32:55 +03:00
|
|
|
}
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
|
|
|
|
2020-07-03 19:10:10 +03:00
|
|
|
// we manually inline this for single operations for performance without -prod
|
2021-03-05 08:17:57 +03:00
|
|
|
[inline; unsafe]
|
2020-07-03 19:10:10 +03:00
|
|
|
fn (mut a array) set_unsafe(i int, val voidptr) {
|
2021-04-05 21:39:32 +03:00
|
|
|
unsafe { C.memcpy(&byte(a.data) + a.element_size * i, val, a.element_size) }
|
2020-07-03 19:10:10 +03:00
|
|
|
}
|
|
|
|
|
2019-10-31 21:50:20 +03:00
|
|
|
// Private function. Used to implement assigment to the array element.
|
2020-05-17 14:51:18 +03:00
|
|
|
fn (mut a array) set(i int, val voidptr) {
|
2020-10-15 13:32:28 +03:00
|
|
|
$if !no_bounds_checking ? {
|
2020-02-16 18:13:45 +03:00
|
|
|
if i < 0 || i >= a.len {
|
|
|
|
panic('array.set: index out of range (i == $i, a.len == $a.len)')
|
|
|
|
}
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
2021-04-05 21:39:32 +03:00
|
|
|
unsafe { C.memcpy(&byte(a.data) + a.element_size * i, val, a.element_size) }
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
|
|
|
|
2020-05-17 14:51:18 +03:00
|
|
|
fn (mut a array) push(val voidptr) {
|
2019-10-31 21:50:20 +03:00
|
|
|
a.ensure_cap(a.len + 1)
|
2021-04-05 21:39:32 +03:00
|
|
|
unsafe { C.memmove(&byte(a.data) + a.element_size * a.len, val, a.element_size) }
|
2019-10-31 21:50:20 +03:00
|
|
|
a.len++
|
2019-10-09 23:38:33 +03:00
|
|
|
}
|
|
|
|
|
2021-02-05 18:51:45 +03:00
|
|
|
// push_many implements the functionality for pushing another array.
|
|
|
|
// `val` is array.data and user facing usage is `a << [1,2,3]`
|
2021-02-27 00:55:09 +03:00
|
|
|
[unsafe]
|
2020-05-17 14:51:18 +03:00
|
|
|
pub fn (mut a3 array) push_many(val voidptr, size int) {
|
2020-12-14 08:34:47 +03:00
|
|
|
if a3.data == val && !isnil(a3.data) {
|
2020-03-09 00:11:56 +03:00
|
|
|
// handle `arr << arr`
|
|
|
|
copy := a3.clone()
|
|
|
|
a3.ensure_cap(a3.len + size)
|
2020-07-03 19:10:10 +03:00
|
|
|
unsafe {
|
2020-10-15 13:32:28 +03:00
|
|
|
// C.memcpy(a.data, copy.data, copy.element_size * copy.len)
|
2020-07-03 19:10:10 +03:00
|
|
|
C.memcpy(a3.get_unsafe(a3.len), copy.data, a3.element_size * size)
|
|
|
|
}
|
2020-01-19 15:11:58 +03:00
|
|
|
} else {
|
2020-03-09 00:11:56 +03:00
|
|
|
a3.ensure_cap(a3.len + size)
|
2020-12-14 08:34:47 +03:00
|
|
|
if !isnil(a3.data) && !isnil(val) {
|
2020-12-23 21:13:42 +03:00
|
|
|
unsafe { C.memcpy(a3.get_unsafe(a3.len), val, a3.element_size * size) }
|
2020-12-14 08:34:47 +03:00
|
|
|
}
|
2020-01-19 15:11:58 +03:00
|
|
|
}
|
2020-03-09 00:11:56 +03:00
|
|
|
a3.len += size
|
2019-10-09 23:38:33 +03:00
|
|
|
}
|
|
|
|
|
2020-12-15 11:31:35 +03:00
|
|
|
// reverse_in_place reverses existing array data, modifying original array.
|
2020-07-11 14:17:11 +03:00
|
|
|
pub fn (mut a array) reverse_in_place() {
|
|
|
|
if a.len < 2 {
|
|
|
|
return
|
|
|
|
}
|
|
|
|
unsafe {
|
|
|
|
mut tmp_value := malloc(a.element_size)
|
2020-10-15 13:32:28 +03:00
|
|
|
for i in 0 .. a.len / 2 {
|
2021-04-05 21:39:32 +03:00
|
|
|
C.memcpy(tmp_value, &byte(a.data) + i * a.element_size, a.element_size)
|
|
|
|
C.memcpy(&byte(a.data) + i * a.element_size, &byte(a.data) +
|
2021-01-23 11:33:22 +03:00
|
|
|
(a.len - 1 - i) * a.element_size, a.element_size)
|
2021-04-05 21:39:32 +03:00
|
|
|
C.memcpy(&byte(a.data) + (a.len - 1 - i) * a.element_size, tmp_value, a.element_size)
|
2020-07-11 14:17:11 +03:00
|
|
|
}
|
|
|
|
free(tmp_value)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// reverse returns a new array with the elements of the original array in reverse order.
|
2019-07-17 19:17:07 +03:00
|
|
|
pub fn (a array) reverse() array {
|
2020-02-29 22:44:02 +03:00
|
|
|
if a.len < 2 {
|
|
|
|
return a
|
|
|
|
}
|
2020-07-03 19:10:10 +03:00
|
|
|
mut arr := array{
|
2020-05-18 18:05:48 +03:00
|
|
|
element_size: a.element_size
|
|
|
|
data: vcalloc(a.cap * a.element_size)
|
2020-05-18 22:38:06 +03:00
|
|
|
len: a.len
|
|
|
|
cap: a.cap
|
2019-07-17 19:17:07 +03:00
|
|
|
}
|
2020-10-15 13:32:28 +03:00
|
|
|
for i in 0 .. a.len {
|
2020-12-23 21:13:42 +03:00
|
|
|
unsafe { arr.set_unsafe(i, a.get_unsafe(a.len - 1 - i)) }
|
2019-07-17 19:17:07 +03:00
|
|
|
}
|
|
|
|
return arr
|
|
|
|
}
|
|
|
|
|
2019-12-18 20:07:32 +03:00
|
|
|
// pub fn (a []int) free() {
|
2020-11-30 20:51:00 +03:00
|
|
|
// free frees all memory occupied by the array.
|
2020-08-09 12:22:11 +03:00
|
|
|
[unsafe]
|
2020-05-06 19:03:44 +03:00
|
|
|
pub fn (a &array) free() {
|
2020-07-11 14:22:16 +03:00
|
|
|
$if prealloc {
|
|
|
|
return
|
|
|
|
}
|
2019-12-18 20:07:32 +03:00
|
|
|
// if a.is_slice {
|
|
|
|
// return
|
|
|
|
// }
|
2021-05-27 15:50:06 +03:00
|
|
|
unsafe { free(&byte(a.data) - a.offset) }
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
|
|
|
|
2021-03-18 22:10:42 +03:00
|
|
|
[unsafe]
|
|
|
|
pub fn (mut a []string) free() {
|
|
|
|
$if prealloc {
|
|
|
|
return
|
|
|
|
}
|
|
|
|
for s in a {
|
|
|
|
unsafe { s.free() }
|
|
|
|
}
|
2021-03-20 16:16:36 +03:00
|
|
|
unsafe { free(a.data) }
|
2021-03-18 22:10:42 +03:00
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// str returns a string representation of the array of strings
|
|
|
|
// => '["a", "b", "c"]'.
|
2021-03-23 23:11:32 +03:00
|
|
|
[manualfree]
|
2019-06-30 14:06:46 +03:00
|
|
|
pub fn (a []string) str() string {
|
2019-08-31 02:35:05 +03:00
|
|
|
mut sb := strings.new_builder(a.len * 3)
|
2021-02-22 14:18:11 +03:00
|
|
|
sb.write_string('[')
|
2020-10-15 13:32:28 +03:00
|
|
|
for i in 0 .. a.len {
|
2019-06-22 21:20:28 +03:00
|
|
|
val := a[i]
|
2021-02-22 14:18:11 +03:00
|
|
|
sb.write_string("'")
|
|
|
|
sb.write_string(val)
|
|
|
|
sb.write_string("'")
|
2019-06-22 21:20:28 +03:00
|
|
|
if i < a.len - 1 {
|
2021-02-22 14:18:11 +03:00
|
|
|
sb.write_string(', ')
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
|
|
|
}
|
2021-02-22 14:18:11 +03:00
|
|
|
sb.write_string(']')
|
2021-03-23 23:11:32 +03:00
|
|
|
res := sb.str()
|
|
|
|
unsafe { sb.free() }
|
|
|
|
return res
|
2019-06-22 21:20:28 +03:00
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// hex returns a string with the hexadecimal representation
|
|
|
|
// of the byte elements of the array.
|
2019-07-15 18:49:01 +03:00
|
|
|
pub fn (b []byte) hex() string {
|
2021-02-14 21:31:42 +03:00
|
|
|
mut hex := unsafe { malloc(b.len * 2 + 1) }
|
2020-03-11 02:38:11 +03:00
|
|
|
mut dst_i := 0
|
|
|
|
for i in b {
|
2020-03-18 18:47:37 +03:00
|
|
|
n0 := i >> 4
|
2020-07-15 22:56:50 +03:00
|
|
|
unsafe {
|
2021-04-27 01:41:42 +03:00
|
|
|
hex[dst_i] = if n0 < 10 { n0 + `0` } else { n0 + byte(87) }
|
|
|
|
dst_i++
|
2020-07-15 22:56:50 +03:00
|
|
|
}
|
2020-03-11 02:38:11 +03:00
|
|
|
n1 := i & 0xF
|
2020-07-15 22:56:50 +03:00
|
|
|
unsafe {
|
2021-04-27 01:41:42 +03:00
|
|
|
hex[dst_i] = if n1 < 10 { n1 + `0` } else { n1 + byte(87) }
|
|
|
|
dst_i++
|
2020-07-15 22:56:50 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
unsafe {
|
2021-04-13 11:29:33 +03:00
|
|
|
hex[dst_i] = 0
|
2020-10-15 13:32:28 +03:00
|
|
|
return tos(hex, dst_i)
|
2020-03-11 02:38:11 +03:00
|
|
|
}
|
2019-07-15 18:49:01 +03:00
|
|
|
}
|
2019-07-28 18:19:59 +03:00
|
|
|
|
2019-10-31 21:50:20 +03:00
|
|
|
// copy copies the `src` byte array elements to the `dst` byte array.
|
|
|
|
// The number of the elements copied is the minimum of the length of both arrays.
|
|
|
|
// Returns the number of elements copied.
|
2019-07-28 18:19:59 +03:00
|
|
|
// TODO: implement for all types
|
2020-10-15 13:32:28 +03:00
|
|
|
pub fn copy(dst []byte, src []byte) int {
|
2021-03-02 19:14:42 +03:00
|
|
|
min := if dst.len < src.len { dst.len } else { src.len }
|
|
|
|
if min > 0 {
|
2021-04-05 21:39:32 +03:00
|
|
|
unsafe { C.memcpy(&byte(dst.data), src.data, min) }
|
2019-07-28 18:19:59 +03:00
|
|
|
}
|
2021-03-02 19:14:42 +03:00
|
|
|
return min
|
2019-07-28 18:19:59 +03:00
|
|
|
}
|
2019-09-01 20:55:34 +03:00
|
|
|
|
2019-10-31 21:50:20 +03:00
|
|
|
// Private function. Comparator for int type.
|
2020-10-15 13:32:28 +03:00
|
|
|
fn compare_ints(a &int, b &int) int {
|
2019-11-19 00:27:27 +03:00
|
|
|
if *a < *b {
|
2019-09-01 20:55:34 +03:00
|
|
|
return -1
|
|
|
|
}
|
2019-11-19 00:27:27 +03:00
|
|
|
if *a > *b {
|
2019-09-01 20:55:34 +03:00
|
|
|
return 1
|
|
|
|
}
|
|
|
|
return 0
|
|
|
|
}
|
|
|
|
|
2020-10-15 13:32:28 +03:00
|
|
|
fn compare_ints_reverse(a &int, b &int) int {
|
2020-08-12 07:11:40 +03:00
|
|
|
if *a > *b {
|
2020-12-06 00:14:14 +03:00
|
|
|
return -1
|
|
|
|
}
|
|
|
|
if *a < *b {
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
return 0
|
|
|
|
}
|
|
|
|
|
2021-02-15 18:54:07 +03:00
|
|
|
// sort sorts an array of int in place in ascending order.
|
2020-05-17 14:51:18 +03:00
|
|
|
pub fn (mut a []int) sort() {
|
2019-09-01 20:55:34 +03:00
|
|
|
a.sort_with_compare(compare_ints)
|
|
|
|
}
|
2019-10-04 23:07:19 +03:00
|
|
|
|
2020-12-15 11:31:35 +03:00
|
|
|
// index returns the first index at which a given element can be found in the array
|
|
|
|
// or -1 if the value is not found.
|
2019-10-04 23:07:19 +03:00
|
|
|
pub fn (a []string) index(v string) int {
|
2020-10-15 13:32:28 +03:00
|
|
|
for i in 0 .. a.len {
|
2019-10-04 23:07:19 +03:00
|
|
|
if a[i] == v {
|
|
|
|
return i
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return -1
|
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// reduce executes a given reducer function on each element of the array,
|
2019-10-11 04:12:40 +03:00
|
|
|
// resulting in a single output value.
|
2020-10-15 13:32:28 +03:00
|
|
|
pub fn (a []int) reduce(iter fn (int, int) int, accum_start int) int {
|
2020-04-04 15:55:40 +03:00
|
|
|
mut accum_ := accum_start
|
2020-02-24 19:55:16 +03:00
|
|
|
for i in a {
|
2020-04-04 15:55:40 +03:00
|
|
|
accum_ = iter(accum_, i)
|
2019-10-11 04:12:40 +03:00
|
|
|
}
|
2020-04-04 15:55:40 +03:00
|
|
|
return accum_
|
2019-10-11 04:12:40 +03:00
|
|
|
}
|
2019-10-29 14:26:00 +03:00
|
|
|
|
2020-12-16 20:22:26 +03:00
|
|
|
// grow_cap grows the array's capacity by `amount` elements.
|
|
|
|
pub fn (mut a array) grow_cap(amount int) {
|
|
|
|
a.ensure_cap(a.cap + amount)
|
|
|
|
}
|
|
|
|
|
|
|
|
// grow_len ensures that an array has a.len + amount of length
|
2021-02-27 00:55:09 +03:00
|
|
|
[unsafe]
|
2020-12-16 20:22:26 +03:00
|
|
|
pub fn (mut a array) grow_len(amount int) {
|
2020-11-15 23:54:47 +03:00
|
|
|
a.ensure_cap(a.len + amount)
|
2020-12-16 20:22:26 +03:00
|
|
|
a.len += amount
|
2020-11-15 23:54:47 +03:00
|
|
|
}
|
|
|
|
|
2020-12-15 11:31:35 +03:00
|
|
|
// eq checks if the arrays have the same elements or not.
|
|
|
|
// TODO: make it work with all types.
|
2020-02-18 22:31:08 +03:00
|
|
|
pub fn (a1 []string) eq(a2 []string) bool {
|
2020-10-15 13:32:28 +03:00
|
|
|
// return array_eq(a, a2)
|
2020-02-18 22:31:08 +03:00
|
|
|
if a1.len != a2.len {
|
|
|
|
return false
|
|
|
|
}
|
2021-03-23 21:36:19 +03:00
|
|
|
size_of_string := int(sizeof(string))
|
2020-10-15 13:32:28 +03:00
|
|
|
for i in 0 .. a1.len {
|
2021-03-23 21:36:19 +03:00
|
|
|
offset := i * size_of_string
|
2021-04-05 21:39:32 +03:00
|
|
|
s1 := unsafe { &string(&byte(a1.data) + offset) }
|
|
|
|
s2 := unsafe { &string(&byte(a2.data) + offset) }
|
2021-03-23 21:36:19 +03:00
|
|
|
if *s1 != *s2 {
|
2020-02-18 22:31:08 +03:00
|
|
|
return false
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
|
2020-11-30 20:51:00 +03:00
|
|
|
// pointers returns a new array, where each element
|
|
|
|
// is the address of the corresponding element in the array.
|
2021-02-27 00:55:09 +03:00
|
|
|
[unsafe]
|
2020-03-04 22:28:42 +03:00
|
|
|
pub fn (a array) pointers() []voidptr {
|
2020-04-26 10:17:13 +03:00
|
|
|
mut res := []voidptr{}
|
2020-10-15 13:32:28 +03:00
|
|
|
for i in 0 .. a.len {
|
2020-12-23 21:13:42 +03:00
|
|
|
unsafe { res << a.get_unsafe(i) }
|
2020-03-04 22:28:42 +03:00
|
|
|
}
|
|
|
|
return res
|
|
|
|
}
|
2020-11-27 19:18:46 +03:00
|
|
|
|
|
|
|
// voidptr.vbytes() - makes a V []byte structure from a C style memory buffer. NB: the data is reused, NOT copied!
|
|
|
|
[unsafe]
|
|
|
|
pub fn (data voidptr) vbytes(len int) []byte {
|
|
|
|
res := array{
|
|
|
|
element_size: 1
|
|
|
|
data: data
|
|
|
|
len: len
|
|
|
|
cap: len
|
|
|
|
}
|
|
|
|
return res
|
|
|
|
}
|
|
|
|
|
|
|
|
// byteptr.vbytes() - makes a V []byte structure from a C style memory buffer. NB: the data is reused, NOT copied!
|
|
|
|
[unsafe]
|
2021-04-04 20:14:51 +03:00
|
|
|
pub fn (data &byte) vbytes(len int) []byte {
|
2020-12-23 21:13:42 +03:00
|
|
|
return unsafe { voidptr(data).vbytes(len) }
|
2020-11-27 19:18:46 +03:00
|
|
|
}
|
2021-04-14 01:40:26 +03:00
|
|
|
|
|
|
|
// non-pub "noscan" versions of some above functions
|
|
|
|
fn __new_array_noscan(mylen int, cap int, elm_size int) array {
|
|
|
|
cap_ := if cap < mylen { mylen } else { cap }
|
|
|
|
arr := array{
|
|
|
|
element_size: elm_size
|
|
|
|
data: vcalloc_noscan(cap_ * elm_size)
|
|
|
|
len: mylen
|
|
|
|
cap: cap_
|
|
|
|
}
|
|
|
|
return arr
|
|
|
|
}
|
|
|
|
|
|
|
|
fn __new_array_with_default_noscan(mylen int, cap int, elm_size int, val voidptr) array {
|
|
|
|
cap_ := if cap < mylen { mylen } else { cap }
|
|
|
|
mut arr := array{
|
|
|
|
element_size: elm_size
|
|
|
|
data: vcalloc_noscan(cap_ * elm_size)
|
|
|
|
len: mylen
|
|
|
|
cap: cap_
|
|
|
|
}
|
|
|
|
if val != 0 {
|
|
|
|
for i in 0 .. arr.len {
|
|
|
|
unsafe { arr.set_unsafe(i, val) }
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return arr
|
|
|
|
}
|
|
|
|
|
|
|
|
fn __new_array_with_array_default_noscan(mylen int, cap int, elm_size int, val array) array {
|
|
|
|
cap_ := if cap < mylen { mylen } else { cap }
|
|
|
|
mut arr := array{
|
|
|
|
element_size: elm_size
|
|
|
|
data: vcalloc_noscan(cap_ * elm_size)
|
|
|
|
len: mylen
|
|
|
|
cap: cap_
|
|
|
|
}
|
|
|
|
for i in 0 .. arr.len {
|
|
|
|
val_clone := val.clone()
|
|
|
|
unsafe { arr.set_unsafe(i, &val_clone) }
|
|
|
|
}
|
|
|
|
return arr
|
|
|
|
}
|
|
|
|
|
|
|
|
// Private function, used by V (`nums := [1, 2, 3]`)
|
|
|
|
fn new_array_from_c_array_noscan(len int, cap int, elm_size int, c_array voidptr) array {
|
|
|
|
cap_ := if cap < len { len } else { cap }
|
|
|
|
arr := array{
|
|
|
|
element_size: elm_size
|
|
|
|
data: vcalloc_noscan(cap_ * elm_size)
|
|
|
|
len: len
|
|
|
|
cap: cap_
|
|
|
|
}
|
|
|
|
// TODO Write all memory functions (like memcpy) in V
|
|
|
|
unsafe { C.memcpy(arr.data, c_array, len * elm_size) }
|
|
|
|
return arr
|
|
|
|
}
|
|
|
|
|
2021-06-08 23:23:28 +03:00
|
|
|
// repeat returns a new array with the given array elements repeated given times.
|
|
|
|
// `cgen` will replace this with an apropriate call to `repeat_to_depth()`
|
|
|
|
|
|
|
|
// version of `repeat()` that handles multi dimensional arrays
|
|
|
|
// `unsafe` to call directly because `depth` is not checked
|
|
|
|
[unsafe]
|
|
|
|
fn (a array) repeat_to_depth_noscan(count int, depth int) array {
|
2021-04-14 01:40:26 +03:00
|
|
|
if count < 0 {
|
|
|
|
panic('array.repeat: count is negative: $count')
|
|
|
|
}
|
|
|
|
mut size := count * a.len * a.element_size
|
|
|
|
if size == 0 {
|
|
|
|
size = a.element_size
|
|
|
|
}
|
|
|
|
arr := array{
|
|
|
|
element_size: a.element_size
|
2021-06-08 23:23:28 +03:00
|
|
|
data: if depth > 0 { vcalloc(size) } else { vcalloc_noscan(size) }
|
2021-04-14 01:40:26 +03:00
|
|
|
len: count * a.len
|
|
|
|
cap: count * a.len
|
|
|
|
}
|
2021-06-09 12:52:30 +03:00
|
|
|
if a.len > 0 {
|
|
|
|
for i in 0 .. count {
|
|
|
|
if depth > 0 {
|
|
|
|
ary_clone := unsafe { a.clone_to_depth_noscan(depth) }
|
|
|
|
unsafe { C.memcpy(arr.get_unsafe(i * a.len), &byte(ary_clone.data), a.len * a.element_size) }
|
|
|
|
} else {
|
|
|
|
unsafe { C.memcpy(arr.get_unsafe(i * a.len), &byte(a.data), a.len * a.element_size) }
|
|
|
|
}
|
2021-04-14 01:40:26 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return arr
|
|
|
|
}
|
|
|
|
|
2021-06-08 23:23:28 +03:00
|
|
|
pub fn (a &array) clone_to_depth_noscan(depth int) array {
|
2021-04-14 01:40:26 +03:00
|
|
|
mut size := a.cap * a.element_size
|
|
|
|
if size == 0 {
|
|
|
|
size++
|
|
|
|
}
|
|
|
|
mut arr := array{
|
|
|
|
element_size: a.element_size
|
2021-06-08 23:23:28 +03:00
|
|
|
data: if depth > 0 { vcalloc(size) } else { vcalloc_noscan(size) }
|
2021-04-14 01:40:26 +03:00
|
|
|
len: a.len
|
|
|
|
cap: a.cap
|
|
|
|
}
|
|
|
|
// Recursively clone-generated elements if array element is array type
|
2021-06-08 23:23:28 +03:00
|
|
|
if depth > 0 {
|
2021-04-14 01:40:26 +03:00
|
|
|
for i in 0 .. a.len {
|
|
|
|
ar := array{}
|
2021-06-08 23:23:28 +03:00
|
|
|
unsafe { C.memcpy(&ar, a.get_unsafe(i), int(sizeof(array))) }
|
|
|
|
ar_clone := unsafe { ar.clone_to_depth_noscan(depth - 1) }
|
2021-04-14 01:40:26 +03:00
|
|
|
unsafe { arr.set_unsafe(i, &ar_clone) }
|
|
|
|
}
|
2021-06-08 23:23:28 +03:00
|
|
|
return arr
|
|
|
|
} else {
|
|
|
|
if !isnil(a.data) {
|
|
|
|
unsafe { C.memcpy(&byte(arr.data), a.data, a.cap * a.element_size) }
|
2021-04-14 01:40:26 +03:00
|
|
|
}
|
2021-06-08 23:23:28 +03:00
|
|
|
return arr
|
2021-04-14 01:40:26 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn (a array) reverse_noscan() array {
|
|
|
|
if a.len < 2 {
|
|
|
|
return a
|
|
|
|
}
|
|
|
|
mut arr := array{
|
|
|
|
element_size: a.element_size
|
|
|
|
data: vcalloc_noscan(a.cap * a.element_size)
|
|
|
|
len: a.len
|
|
|
|
cap: a.cap
|
|
|
|
}
|
|
|
|
for i in 0 .. a.len {
|
|
|
|
unsafe { arr.set_unsafe(i, a.get_unsafe(a.len - 1 - i)) }
|
|
|
|
}
|
|
|
|
return arr
|
|
|
|
}
|