mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2025-11-04 06:52:26 -06:00
409 lines
8.8 KiB
Go
409 lines
8.8 KiB
Go
/**
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* Copyright 2023 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ast
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import (
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`sort`
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`unsafe`
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)
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type nodeChunk [_DEFAULT_NODE_CAP]Node
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type linkedNodes struct {
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head nodeChunk
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tail []*nodeChunk
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size int
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}
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func (self *linkedNodes) Cap() int {
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if self == nil {
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return 0
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}
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return (len(self.tail)+1)*_DEFAULT_NODE_CAP
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}
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func (self *linkedNodes) Len() int {
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if self == nil {
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return 0
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}
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return self.size
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}
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func (self *linkedNodes) At(i int) (*Node) {
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if self == nil {
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return nil
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}
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if i >= 0 && i<self.size && i < _DEFAULT_NODE_CAP {
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return &self.head[i]
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} else if i >= _DEFAULT_NODE_CAP && i<self.size {
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < len(self.tail) {
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return &self.tail[a][b]
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}
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}
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return nil
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}
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func (self *linkedNodes) MoveOne(source int, target int) {
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if source == target {
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return
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}
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if source < 0 || source >= self.size || target < 0 || target >= self.size {
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return
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}
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// reserve source
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n := *self.At(source)
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if source < target {
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// move every element (source,target] one step back
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for i:=source; i<target; i++ {
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*self.At(i) = *self.At(i+1)
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}
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} else {
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// move every element [target,source) one step forward
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for i:=source; i>target; i-- {
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*self.At(i) = *self.At(i-1)
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}
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}
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// set target
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*self.At(target) = n
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}
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func (self *linkedNodes) Pop() {
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if self == nil || self.size == 0 {
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return
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}
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self.Set(self.size-1, Node{})
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self.size--
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}
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func (self *linkedPairs) Pop() {
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if self == nil || self.size == 0 {
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return
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}
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self.Set(self.size-1, Pair{})
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self.size--
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}
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func (self *linkedNodes) Push(v Node) {
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self.Set(self.size, v)
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}
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func (self *linkedNodes) Set(i int, v Node) {
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if i < _DEFAULT_NODE_CAP {
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self.head[i] = v
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if self.size <= i {
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self.size = i+1
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}
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return
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}
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < 0 {
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self.head[b] = v
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} else {
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self.growTailLength(a+1)
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var n = &self.tail[a]
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if *n == nil {
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*n = new(nodeChunk)
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}
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(*n)[b] = v
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}
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if self.size <= i {
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self.size = i+1
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}
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}
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func (self *linkedNodes) growTailLength(l int) {
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if l <= len(self.tail) {
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return
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}
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c := cap(self.tail)
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for c < l {
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c += 1 + c>>_APPEND_GROW_SHIFT
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}
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if c == cap(self.tail) {
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self.tail = self.tail[:l]
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return
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}
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tmp := make([]*nodeChunk, l, c)
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copy(tmp, self.tail)
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self.tail = tmp
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}
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func (self *linkedNodes) ToSlice(con []Node) {
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if len(con) < self.size {
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return
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}
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i := (self.size-1)
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < 0 {
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copy(con, self.head[:b+1])
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return
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} else {
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copy(con, self.head[:])
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con = con[_DEFAULT_NODE_CAP:]
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}
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for i:=0; i<a; i++ {
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copy(con, self.tail[i][:])
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con = con[_DEFAULT_NODE_CAP:]
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}
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copy(con, self.tail[a][:b+1])
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}
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func (self *linkedNodes) FromSlice(con []Node) {
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self.size = len(con)
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i := self.size-1
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < 0 {
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copy(self.head[:b+1], con)
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return
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} else {
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copy(self.head[:], con)
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con = con[_DEFAULT_NODE_CAP:]
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}
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if cap(self.tail) <= a {
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c := (a+1) + (a+1)>>_APPEND_GROW_SHIFT
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self.tail = make([]*nodeChunk, a+1, c)
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}
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self.tail = self.tail[:a+1]
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for i:=0; i<a; i++ {
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self.tail[i] = new(nodeChunk)
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copy(self.tail[i][:], con)
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con = con[_DEFAULT_NODE_CAP:]
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}
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self.tail[a] = new(nodeChunk)
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copy(self.tail[a][:b+1], con)
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}
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type pairChunk [_DEFAULT_NODE_CAP]Pair
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type linkedPairs struct {
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head pairChunk
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tail []*pairChunk
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size int
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}
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func (self *linkedPairs) Cap() int {
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if self == nil {
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return 0
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}
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return (len(self.tail)+1)*_DEFAULT_NODE_CAP
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}
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func (self *linkedPairs) Len() int {
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if self == nil {
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return 0
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}
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return self.size
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}
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func (self *linkedPairs) At(i int) *Pair {
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if self == nil {
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return nil
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}
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if i >= 0 && i < _DEFAULT_NODE_CAP && i<self.size {
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return &self.head[i]
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} else if i >= _DEFAULT_NODE_CAP && i<self.size {
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < len(self.tail) {
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return &self.tail[a][b]
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}
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}
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return nil
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}
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func (self *linkedPairs) Push(v Pair) {
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self.Set(self.size, v)
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}
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func (self *linkedPairs) Set(i int, v Pair) {
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if i < _DEFAULT_NODE_CAP {
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self.head[i] = v
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if self.size <= i {
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self.size = i+1
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}
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return
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}
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < 0 {
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self.head[b] = v
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} else {
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self.growTailLength(a+1)
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var n = &self.tail[a]
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if *n == nil {
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*n = new(pairChunk)
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}
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(*n)[b] = v
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}
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if self.size <= i {
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self.size = i+1
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}
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}
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func (self *linkedPairs) growTailLength(l int) {
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if l <= len(self.tail) {
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return
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}
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c := cap(self.tail)
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for c < l {
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c += 1 + c>>_APPEND_GROW_SHIFT
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}
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if c == cap(self.tail) {
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self.tail = self.tail[:l]
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return
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}
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tmp := make([]*pairChunk, l, c)
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copy(tmp, self.tail)
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self.tail = tmp
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}
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// linear search
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func (self *linkedPairs) Get(key string) (*Pair, int) {
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for i:=0; i<self.size; i++ {
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if n := self.At(i); n.Key == key {
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return n, i
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}
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}
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return nil, -1
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}
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func (self *linkedPairs) ToSlice(con []Pair) {
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if len(con) < self.size {
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return
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}
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i := self.size-1
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < 0 {
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copy(con, self.head[:b+1])
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return
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} else {
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copy(con, self.head[:])
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con = con[_DEFAULT_NODE_CAP:]
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}
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for i:=0; i<a; i++ {
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copy(con, self.tail[i][:])
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con = con[_DEFAULT_NODE_CAP:]
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}
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copy(con, self.tail[a][:b+1])
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}
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func (self *linkedPairs) ToMap(con map[string]Node) {
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for i:=0; i<self.size; i++ {
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n := self.At(i)
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con[n.Key] = n.Value
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}
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}
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func (self *linkedPairs) FromSlice(con []Pair) {
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self.size = len(con)
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i := self.size-1
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a, b := i/_DEFAULT_NODE_CAP-1, i%_DEFAULT_NODE_CAP
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if a < 0 {
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copy(self.head[:b+1], con)
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return
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} else {
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copy(self.head[:], con)
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con = con[_DEFAULT_NODE_CAP:]
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}
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if cap(self.tail) <= a {
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c := (a+1) + (a+1)>>_APPEND_GROW_SHIFT
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self.tail = make([]*pairChunk, a+1, c)
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}
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self.tail = self.tail[:a+1]
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for i:=0; i<a; i++ {
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self.tail[i] = new(pairChunk)
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copy(self.tail[i][:], con)
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con = con[_DEFAULT_NODE_CAP:]
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}
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self.tail[a] = new(pairChunk)
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copy(self.tail[a][:b+1], con)
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}
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func (self *linkedPairs) Less(i, j int) bool {
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return lessFrom(self.At(i).Key, self.At(j).Key, 0)
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}
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func (self *linkedPairs) Swap(i, j int) {
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a, b := self.At(i), self.At(j)
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*a, *b = *b, *a
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}
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func (self *linkedPairs) Sort() {
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sort.Stable(self)
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}
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// Compare two strings from the pos d.
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func lessFrom(a, b string, d int) bool {
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l := len(a)
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if l > len(b) {
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l = len(b)
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}
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for i := d; i < l; i++ {
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if a[i] == b[i] {
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continue
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}
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return a[i] < b[i]
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}
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return len(a) < len(b)
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}
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type parseObjectStack struct {
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parser Parser
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v linkedPairs
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}
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type parseArrayStack struct {
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parser Parser
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v linkedNodes
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}
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func newLazyArray(p *Parser) Node {
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s := new(parseArrayStack)
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s.parser = *p
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return Node{
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t: _V_ARRAY_LAZY,
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p: unsafe.Pointer(s),
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}
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}
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func newLazyObject(p *Parser) Node {
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s := new(parseObjectStack)
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s.parser = *p
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return Node{
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t: _V_OBJECT_LAZY,
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p: unsafe.Pointer(s),
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}
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}
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func (self *Node) getParserAndArrayStack() (*Parser, *parseArrayStack) {
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stack := (*parseArrayStack)(self.p)
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return &stack.parser, stack
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}
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func (self *Node) getParserAndObjectStack() (*Parser, *parseObjectStack) {
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stack := (*parseObjectStack)(self.p)
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return &stack.parser, stack
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}
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