Perf: faster FIFO impl

This commit is contained in:
SukkaW
2024-12-14 00:23:52 +08:00
parent 58cea58c3c
commit 8851d7fb38
4 changed files with 32 additions and 82 deletions

View File

@@ -6,7 +6,7 @@ import { fastStringCompare } from './misc';
import util from 'node:util';
import { noop } from 'foxts/noop';
import { fastStringArrayJoin } from 'foxts/fast-string-array-join';
import FIFO from './fifo';
import FIFO from 'fast-fifo';
type TrieNode<Meta = any> = [
boolean, /** end */
@@ -181,14 +181,14 @@ abstract class Triebase<Meta = any> {
private static bfsResults: [node: TrieNode | null, suffix: string[]] = [null, []];
private static bfs<Meta>(this: void, nodeStack: FIFO<TrieNode<Meta>>, suffixStack: FIFO<string[]>) {
const node = nodeStack.dequeue()!;
const suffix = suffixStack.dequeue()!;
const node = nodeStack.shift()!;
const suffix = suffixStack.shift()!;
node[3].forEach((childNode, k) => {
// Pushing the child node to the stack for next iteration of DFS
nodeStack.enqueue(childNode);
nodeStack.push(childNode);
suffixStack.enqueue([k, ...suffix]);
suffixStack.push([k, ...suffix]);
});
Triebase.bfsResults[0] = node;
@@ -198,8 +198,8 @@ abstract class Triebase<Meta = any> {
}
private static bfsWithSort<Meta>(this: void, nodeStack: FIFO<TrieNode<Meta>>, suffixStack: FIFO<string[]>) {
const node = nodeStack.dequeue()!;
const suffix = suffixStack.dequeue()!;
const node = nodeStack.shift()!;
const suffix = suffixStack.shift()!;
if (node[3].size) {
const keys = Array.from(node[3].keys()).sort(Triebase.compare);
@@ -209,8 +209,8 @@ abstract class Triebase<Meta = any> {
const childNode = node[3].get(key)!;
// Pushing the child node to the stack for next iteration of DFS
nodeStack.enqueue(childNode);
suffixStack.enqueue([key, ...suffix]);
nodeStack.push(childNode);
suffixStack.push([key, ...suffix]);
}
}
@@ -229,11 +229,11 @@ abstract class Triebase<Meta = any> {
const bfsImpl = withSort ? Triebase.bfsWithSort : Triebase.bfs;
const nodeStack = new FIFO<TrieNode<Meta>>();
nodeStack.enqueue(initialNode);
nodeStack.push(initialNode);
// Resolving initial string (begin the start of the stack)
const suffixStack = new FIFO<string[]>();
suffixStack.enqueue(initialSuffix);
suffixStack.push(initialSuffix);
let node: TrieNode<Meta> = initialNode;
let r;
@@ -247,7 +247,7 @@ abstract class Triebase<Meta = any> {
if (node[0]) {
onMatches(suffix, node[1], node[4]);
}
} while (nodeStack.size);
} while (nodeStack.length);
};
static compare(this: void, a: string, b: string) {
@@ -261,17 +261,17 @@ abstract class Triebase<Meta = any> {
initialSuffix: string[] = []
) {
const nodeStack = new FIFO<TrieNode<Meta>>();
nodeStack.enqueue(initialNode);
nodeStack.push(initialNode);
// Resolving initial string (begin the start of the stack)
const suffixStack = new FIFO<string[]>();
suffixStack.enqueue(initialSuffix);
suffixStack.push(initialSuffix);
let node: TrieNode<Meta> = initialNode;
do {
node = nodeStack.dequeue()!;
const suffix = suffixStack.dequeue()!;
node = nodeStack.shift()!;
const suffix = suffixStack.shift()!;
if (node[3].size) {
const keys = Array.from(node[3].keys()).sort(Triebase.compare);
@@ -281,8 +281,8 @@ abstract class Triebase<Meta = any> {
const childNode = node[3].get(key)!;
// Pushing the child node to the stack for next iteration of DFS
nodeStack.enqueue(childNode);
suffixStack.enqueue([key, ...suffix]);
nodeStack.push(childNode);
suffixStack.push([key, ...suffix]);
}
}
@@ -290,7 +290,7 @@ abstract class Triebase<Meta = any> {
if (node[0]) {
onMatches(suffix, node[1], node[4]);
}
} while (nodeStack.size);
} while (nodeStack.length);
};
protected getSingleChildLeaf(tokens: string[]): FindSingleChildLeafResult<Meta> | null {