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