v/vlib/builtin/js/array.js.v

400 lines
9.7 KiB
V

module builtin
import strings
/// Internal representation of `array` type. It is used to implement slices and to make slices behave correctly
/// it simply stores reference to original array and to index them properly it does index array relative to `index_start`.
struct array_buffer {
arr JS.Array
index_start int
len int
cap int
has_slice bool
}
fn (mut a array_buffer) make_copy() {
if a.index_start != 0 || a.has_slice {
mut new_arr := JS.makeEmtpyJSArray()
for i in 0 .. a.len {
#new_arr.push(a.val.get(i))
mut x := i
x = x
}
new_arr = new_arr
#a.val.arr = new_arr
#a.val.index_start = new int(0)
#a.val.has_slice = new bool(false)
}
}
#array_buffer.prototype.make_copy = function() { return array_buffer_make_copy(this) }
// TODO(playX): Should this be implemented fully in JS, use generics or just voidptr?
fn (a array_buffer) get(ix int) voidptr {
mut res := voidptr(0)
#res = a.arr[a.index_start.val + ix.val];
return res
}
fn (mut a array_buffer) set(ix int, val voidptr) {
#a.val.arr[a.val.index_start.valueOf() + ix.valueOf()] = val;
}
#array_buffer.prototype.get = function(ix) { return array_buffer_get(this,ix);}
#array_buffer.prototype.set = function(ix,val) { array_buffer_set(this,ix,val); }
struct array {
pub mut:
arr array_buffer
len int
cap int
}
fn v_sort(mut arr array, comparator fn (voidptr, voidptr) int) {
mut need_iter := true
for need_iter {
need_iter = false
for i := 1; i < arr.len; i++ {
if comparator(arr[i], arr[i - 1]) != 1 {
tmp := arr[i]
arr[i] = arr[i - 1]
arr[i - 1] = tmp
need_iter = true
}
}
}
}
// trim trims the array length to "index" without modifying the allocated data. If "index" is greater
// than len nothing will be changed.
pub fn (mut a array) trim(index int) {
if index < a.len {
a.len = index
}
}
#function flatIntoArray(target, source, sourceLength, targetIndex, depth) {
#"use strict";
#
#for (var sourceIndex = 0; sourceIndex < sourceLength; ++sourceIndex) {
#if (sourceIndex in source) {
#var element = source[sourceIndex];
#if (depth > 0 && Array.isArray(element))
#targetIndex = flatIntoArray(target, element, element.length, targetIndex, depth - 1);
#else {
#target[targetIndex] = element;
#++targetIndex;
#}
#}
#}
#return targetIndex;
#}
#function flatArray(target,depth) {
#var array = target
#var length = array.length;
#var depthNum = 1;
#
#if (depth !== undefined)
#depthNum = +depth
#
#var result = []
#
#flatIntoArray(result, array, length, 0, depthNum);
#return result;
#}
[unsafe]
pub fn (a array) repeat_to_depth(count int, depth int) array {
if count < 0 {
panic('array.repeat: count is negative: $count')
}
mut arr := empty_array()
if a.len > 0 {
for _ in 0 .. count {
for i in 0 .. a.len {
if depth > 0 {
// TODO
} else {
arr.push(a.arr.get(i))
}
}
}
}
return arr
}
// last returns the last element of the array.
pub fn (a array) last() voidptr {
mut res := voidptr(0)
#res = a.arr.get(new int(a.len-1));
return res
}
fn (a array) get(ix int) voidptr {
mut result := voidptr(0)
#result = a.arr.get(ix)
return result
}
pub fn (a array) repeat(count int) array {
unsafe {
return a.repeat_to_depth(count, 0)
}
}
#function makeEmptyArray() { return new array(new array_buffer({ arr: [], len: new int(0), index_start: new int(0), cap: new int(0) })); }
#function makeEmtpyJSArray() { return new Array(); }
fn JS.makeEmptyArray() array
fn JS.makeEmtpyJSArray() JS.Array
fn empty_array() array {
return JS.makeEmptyArray()
}
fn (a &array) set_len(i int) {
#a.arr.arr.length=i
}
pub fn (mut a array) sort_with_compare(compare voidptr) {
v_sort(mut a, compare)
}
pub fn (mut a array) sort_with_compare_old(compare voidptr) {
#a.val.arr.arr.sort(compare)
}
pub fn (mut a array) sort() {
#a.val.arr.arr.sort($sortComparator)
}
pub fn (a array) index(v string) int {
for i in 0 .. a.len {
#if (a.arr.get(i).toString() == v.toString())
{
return i
}
}
return -1
}
pub fn (a array) slice(start int, end int) array {
mut result := a
#let slice = a.arr.arr.slice(start,end)
#result = new array(new array_buffer({arr: a.arr.arr, len: new int(slice.length),cap: new int(slice.length),index_start: new int(start),has_slice: new bool(true)}))
#a.arr.has_slice = true
//#v_makeSlice(result)
return result
}
pub fn (mut a array) insert(i int, val voidptr) {
#a.val.arr.make_copy()
#a.val.arr.arr.splice(i,0,val)
}
pub fn (mut a array) insert_many(i int, val voidptr, size int) {
#a.val.arr.arr.splice(i,0,...val.arr.slice(0,+size))
}
fn (mut a array) push(val voidptr) {
#a.val.arr.make_copy()
#if (arguments[2] && arguments[2].valueOf()) {a.val.arr.arr.push(...val)} else {
#a.val.arr.arr.push(val)
#}
#a.val.arr.len.val += 1
}
fn v_filter(arr array, callback fn (voidptr) bool) array {
mut filtered := empty_array()
for i := 0; i < arr.arr.len; i++ {
if callback(arr.arr.get(i)) {
filtered.push(arr.arr.get(i))
}
}
return filtered
}
fn v_map(arr array, callback fn (voidptr) voidptr) array {
mut maped := empty_array()
for i := 0; i < arr.arr.len; i++ {
maped.push(callback(arr.arr.get(i)))
}
return maped
}
struct array_iterator {
ix int
end int
arr JS.Array
}
#array_iterator.prototype.next = function () {
#if (this.ix.val < this.end.val) {
#this.ix.val++;
#return {done: false, value: this.arr.arr.get(new int(this.ix.val-1))}
#} else {
#return {done: true, value: undefined}
#}
#}
#array_iterator.prototype[Symbol.iterator] = function () { return this; }
#array.prototype[Symbol.iterator] = function () { return new array_iterator({ix: new int(0),end: new int(this.arr.len),arr: this}); }
#array.prototype.entries = function () { let result = []; for (let key = this.arr.index_start.val;key < this.arr.len.val;key++) { result.push([new int(key), this.arr.get(new int(key))]); } return result[Symbol.iterator](); }
#array.prototype.map = function(callback) { return v_map(this,callback); }
#array.prototype.filter = function(callback) { return v_filter(this,callback); }
#Object.defineProperty(array.prototype,'cap',{ get: function () { return this.len; } })
#array.prototype.any = function (value) {
#let val ;if (typeof value == 'function') { val = function (x) { return value(x); } } else { val = function (x) { return vEq(x,value); } }
#for (let i = 0;i < this.arr.arr.length;i++)
#if (val(this.arr.get(i)))
#return true;
#
#return false;
#}
#array.prototype.all = function (value) {
#let val ;if (typeof value == 'function') { val = function (x) { return value(x); } } else { val = function (x) { return vEq(x,value); } }
#for (let i = 0;i < this.arr.arr.length;i++)
#if (!val(this.arr.get(i)))
#return false;
#
#return true;
#}
//#Object.defineProperty(array_buffer.prototype,"len", { get: function() {return new int(this.arr.length);}, set: function(l) { this.arr.length = l.valueOf(); } })
//#Object.defineProperty(array_buffer.prototype,"cap", { get: function() {return new int(this.arr.length);}, set: function(l) { this.arr.length = l.valueOf(); } })
#
#
#function v_makeSlice(array) { Object.defineProperty(array,'len', {get: function() { return this.arr.len; }, set: function(l) { this.arr.len = l; }}) }
// delete deletes array element at index `i`.
pub fn (mut a array) delete(i int) {
a.delete_many(i, 1)
}
fn arr_copy(mut dst array, src array, count int) {
for i := 0; i < count; i++ {
dst.arr.set(i, src.arr.get(i))
}
}
// delete_many deletes `size` elements beginning with index `i`
pub fn (mut a array) delete_many(i int, size int) {
#a.val.arr.make_copy()
#a.val.arr.arr.splice(i.valueOf(),size.valueOf())
}
// prepend prepends one value to the array.
pub fn (mut a array) prepend(val voidptr) {
a.insert(0, val)
}
// prepend_many prepends another array to this array.
[unsafe]
pub fn (mut a array) prepend_many(val voidptr, size int) {
unsafe { a.insert_many(0, val, size) }
}
pub fn (a array) reverse() array {
mut res := empty_array()
#res.arr.arr = Array.from(a.arr).reverse()
return res
}
pub fn (mut a array) reverse_in_place() {
#a.val.arr.arr.reverse()
}
#array.prototype.$includes = function (elem) { return this.arr.arr.find(function(e) { return vEq(elem,e); }) !== undefined;}
pub fn (mut a array) clear() {
#a.val.arr.make_copy()
#a.val.arr.arr.clear()
}
// reduce executes a given reducer function on each element of the array,
// resulting in a single output value.
pub fn (a array) reduce(iter fn (int, int) int, accum_start int) int {
mut accum_ := accum_start
/*#for (let i = 0;i < a.arr.length;i++) {
#accum_ = iter(accum_, a.arr[i])
#}*/
for i in 0 .. a.len {
accum_ = iter(accum_, a.get(i))
}
return accum_
}
pub fn (mut a array) pop() voidptr {
mut res := voidptr(0)
#a.val.arr.make_copy()
#res = a.val.arr.arr.pop()
#a.val.arr.len.val -= 1
return res
}
pub fn (a array) first() voidptr {
mut res := voidptr(0)
#res = a.arr.get(new int(0))
return res
}
#array.prototype.toString = function () {
#let res = "["
#for (let i = 0; i < this.arr.arr.length;i++) {
#res += this.arr.get(i).toString();
#if (i != this.arr.arr.length-1)
#res += ', '
#}
#res += ']'
#return res;
#
#}
pub fn (a array) contains(key voidptr) bool
// delete_last effectively removes last element of an array.
pub fn (mut a array) delete_last() {
#a.val.arr.arr.pop();
}
[unsafe]
pub fn (a &array) free() {
}
// todo: once (a []byte) will work rewrite this
pub fn (a array) bytestr() string {
res := ''
#for (let i = 0;i < a.arr.len.valueOf();i++) res.str += String.fromCharCode(a.arr.get(new int(i)))
return res
}
pub fn (a []string) str() string {
mut sb := strings.new_builder(a.len * 3)
sb.write_string('[')
for i in 0 .. a.len {
val := a[i]
sb.write_string("'")
sb.write_string(val)
sb.write_string("'")
if i < a.len - 1 {
sb.write_string(', ')
}
}
sb.write_string(']')
res := sb.str()
return res
}