[dgit import orig node-undici_7.3.0+dfsg1+~cs24.12.11.orig-llparse-frontend.tar.xz]
--- /dev/null
+node_modules/
+lib/
--- /dev/null
+sudo: false
+language: node_js
+node_js:
+ - "stable"
+script:
+ npm test
--- /dev/null
+# llparse-frontend
+[](http://travis-ci.org/indutny/llparse-frontend)
+[](https://badge.fury.io/js/llparse-frontend)
+
+WIP
+
+#### LICENSE
+
+This software is licensed under the MIT License.
+
+Copyright Fedor Indutny, 2018.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to permit
+persons to whom the Software is furnished to do so, subject to the
+following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+USE OR OTHER DEALINGS IN THE SOFTWARE.
--- /dev/null
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+ "requires": {
+ "cliui": "^5.0.0",
+ "decamelize": "^1.2.0",
+ "find-up": "^3.0.0",
+ "get-caller-file": "^2.0.1",
+ "require-directory": "^2.1.1",
+ "require-main-filename": "^2.0.0",
+ "set-blocking": "^2.0.0",
+ "string-width": "^3.0.0",
+ "which-module": "^2.0.0",
+ "y18n": "^4.0.0",
+ "yargs-parser": "^15.0.1"
+ }
+ },
+ "yargs-parser": {
+ "version": "15.0.1",
+ "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-15.0.1.tgz",
+ "integrity": "sha512-0OAMV2mAZQrs3FkNpDQcBk1x5HXb8X4twADss4S0Iuk+2dGnLOE/fRHrsYm542GduMveyA77OF4wrNJuanRCWw==",
+ "dev": true,
+ "requires": {
+ "camelcase": "^5.0.0",
+ "decamelize": "^1.2.0"
+ }
+ }
+ }
+ },
+ "yn": {
+ "version": "3.1.1",
+ "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
+ "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==",
+ "dev": true
+ }
+ }
+}
--- /dev/null
+{
+ "name": "llparse-frontend",
+ "version": "3.0.0",
+ "description": "Frontend for LLParse compiler",
+ "main": "lib/frontend.js",
+ "types": "lib/frontend.d.ts",
+ "scripts": {
+ "build": "tsc",
+ "clean": "rm -rf lib",
+ "prepare": "npm run clean && npm run build",
+ "lint": "tslint -c tslint.json src/**/*.ts test/**/*.ts",
+ "fix-lint": "npm run lint -- --fix",
+ "mocha": "mocha --timeout=10000 -r ts-node/register/type-check --reporter spec test/*-test.ts",
+ "test": "npm run mocha && npm run lint"
+ },
+ "repository": {
+ "type": "git",
+ "url": "git+ssh://git@github.com/indutny/llparse-frontend.git"
+ },
+ "keywords": [
+ "llparse",
+ "frontend"
+ ],
+ "author": "Fedor Indutny <fedor@indutny.com> (http://darksi.de/)",
+ "license": "MIT",
+ "bugs": {
+ "url": "https://github.com/indutny/llparse-frontend/issues"
+ },
+ "homepage": "https://github.com/indutny/llparse-frontend#readme",
+ "dependencies": {
+ "debug": "^3.2.6",
+ "llparse-builder": "^1.5.2"
+ },
+ "devDependencies": {
+ "@types/debug": "^4.1.5",
+ "@types/mocha": "^8.0.3",
+ "@types/node": "^14.11.8",
+ "mocha": "^8.1.3",
+ "ts-node": "^9.0.0",
+ "tslint": "^5.20.1",
+ "typescript": "^4.0.3"
+ }
+}
--- /dev/null
+import { toCacheKey } from '../utils';
+import { FieldValue } from './field-value';
+
+export class And extends FieldValue {
+ constructor(name: string, field: string, value: number) {
+ super('match', `and_${field}_${toCacheKey(value)}`, name, field, value);
+ }
+}
--- /dev/null
+export type Signature = 'match' | 'value' | 'span';
+
+export abstract class Code {
+ constructor(public readonly signature: Signature,
+ public readonly cacheKey: string,
+ public readonly name: string) {
+ }
+}
--- /dev/null
+import { Code, Signature } from './base';
+
+export abstract class External extends Code {
+ constructor(signature: Signature, name: string) {
+ super(signature, 'external_' + name, name);
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+
+import { Signature } from './base';
+import { Field } from './field';
+
+export abstract class FieldValue extends Field {
+ constructor(signature: Signature, cacheKey: string, name: string,
+ field: string, public readonly value: number) {
+ super(signature, cacheKey, name, field);
+
+ assert.strictEqual(value, value | 0, 'FieldValue `value` must be integer');
+ }
+}
--- /dev/null
+import { Code, Signature } from './base';
+
+export abstract class Field extends Code {
+ constructor(signature: Signature, cacheKey: string, name: string,
+ public readonly field: string) {
+ super(signature, cacheKey, name);
+ }
+}
--- /dev/null
+export * from './and';
+export * from './base';
+export * from './external';
+export * from './field-value';
+export * from './field';
+export * from './is-equal';
+export * from './load';
+export * from './match';
+export * from './mul-add';
+export * from './or';
+export * from './span';
+export * from './store';
+export * from './test';
+export * from './update';
+export * from './value';
--- /dev/null
+import { toCacheKey } from '../utils';
+import { FieldValue } from './field-value';
+
+export class IsEqual extends FieldValue {
+ constructor(name: string, field: string, value: number) {
+ super('match', `is_equal_${field}_${toCacheKey(value)}`, name, field,
+ value);
+ }
+}
--- /dev/null
+import { Field } from './field';
+
+export class Load extends Field {
+ constructor(name: string, field: string) {
+ super('match', `load_${field}`, name, field);
+ }
+}
--- /dev/null
+import { External } from './external';
+
+export class Match extends External {
+ constructor(name: string) {
+ super('match', name);
+ }
+}
--- /dev/null
+import { toCacheKey } from '../utils';
+import { Field } from './field';
+
+export interface IMulAddOptions {
+ readonly base: number;
+ readonly max?: number;
+ readonly signed: boolean;
+}
+
+function toOptionsKey(options: IMulAddOptions): string {
+ let res = `base_${toCacheKey(options.base)}`;
+ if (options.max !== undefined) {
+ res += `_max_${toCacheKey(options.max)}`;
+ }
+ if (options.signed !== undefined) {
+ res += `_signed_${toCacheKey(options.signed)}`;
+ }
+ return res;
+}
+
+export class MulAdd extends Field {
+ constructor(name: string, field: string,
+ public readonly options: IMulAddOptions) {
+ super('value', `mul_add_${field}_${toOptionsKey(options)}`, name, field);
+ }
+}
--- /dev/null
+import { toCacheKey } from '../utils';
+import { FieldValue } from './field-value';
+
+export class Or extends FieldValue {
+ constructor(name: string, field: string, value: number) {
+ super('match', `or_${field}_${toCacheKey(value)}`, name, field, value);
+ }
+}
--- /dev/null
+import { External } from './external';
+
+export class Span extends External {
+ constructor(name: string) {
+ super('span', name);
+ }
+}
--- /dev/null
+import { Field } from './field';
+
+export class Store extends Field {
+ constructor(name: string, field: string) {
+ super('value', `store_${field}`, name, field);
+ }
+}
--- /dev/null
+import { toCacheKey } from '../utils';
+import { FieldValue } from './field-value';
+
+export class Test extends FieldValue {
+ constructor(name: string, field: string, value: number) {
+ super('match', `test_${field}_${toCacheKey(value)}`, name, field, value);
+ }
+}
--- /dev/null
+import { toCacheKey } from '../utils';
+import { FieldValue } from './field-value';
+
+export class Update extends FieldValue {
+ constructor(name: string, field: string, value: number) {
+ super('match', `update_${field}_${toCacheKey(value)}`, name, field, value);
+ }
+}
--- /dev/null
+import { External } from './external';
+
+export class Value extends External {
+ constructor(name: string) {
+ super('value', name);
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+
+import { ICodeImplementation } from '../implementation/code';
+import { IImplementation } from '../implementation/full';
+import { INodeImplementation } from '../implementation/node';
+import { ITransformImplementation } from '../implementation/transform';
+import { IWrap } from '../wrap';
+import { ContainerWrap } from './wrap';
+
+export { ContainerWrap };
+
+export class Container {
+ private readonly map: Map<string, IImplementation> = new Map();
+
+ public add(key: string, impl: IImplementation): void {
+ assert(!this.map.has(key), `Duplicate implementation key: "${key}"`);
+ this.map.set(key, impl);
+ }
+
+ public build(): IImplementation {
+ return {
+ code: this.buildCode(),
+ node: this.buildNode(),
+ transform: this.buildTransform(),
+ };
+ }
+
+ public buildCode(): ICodeImplementation {
+ return {
+ And: this.combine((impl) => impl.code.And),
+ IsEqual: this.combine((impl) => impl.code.IsEqual),
+ Load: this.combine((impl) => impl.code.Load),
+ Match: this.combine((impl) => impl.code.Match),
+ MulAdd: this.combine((impl) => impl.code.MulAdd),
+ Or: this.combine((impl) => impl.code.Or),
+ Span: this.combine((impl) => impl.code.Span),
+ Store: this.combine((impl) => impl.code.Store),
+ Test: this.combine((impl) => impl.code.Test),
+ Update: this.combine((impl) => impl.code.Update),
+ Value: this.combine((impl) => impl.code.Value),
+ };
+ }
+
+ public buildNode(): INodeImplementation {
+ return {
+ Consume: this.combine((impl) => impl.node.Consume),
+ Empty: this.combine((impl) => impl.node.Empty),
+ Error: this.combine((impl) => impl.node.Error),
+ Invoke: this.combine((impl) => impl.node.Invoke),
+ Pause: this.combine((impl) => impl.node.Pause),
+ Sequence: this.combine((impl) => impl.node.Sequence),
+ Single: this.combine((impl) => impl.node.Single),
+ SpanEnd: this.combine((impl) => impl.node.SpanEnd),
+ SpanStart: this.combine((impl) => impl.node.SpanStart),
+ TableLookup: this.combine((impl) => impl.node.TableLookup),
+ };
+ }
+
+ public buildTransform(): ITransformImplementation {
+ return {
+ ID: this.combine((impl) => impl.transform.ID),
+ ToLower: this.combine((impl) => impl.transform.ToLower),
+ ToLowerUnsafe: this.combine((impl) => impl.transform.ToLowerUnsafe),
+ };
+ }
+
+ private combine<T>(gather: (impl: IImplementation) => new(n: T) => IWrap<T>)
+ : new(n: T) => ContainerWrap<T> {
+ const wraps: Map<string, new(n: T) => IWrap<T>> = new Map();
+ for (const [ key, impl ] of this.map) {
+ wraps.set(key, gather(impl));
+ }
+
+ return class ContainerWrapSingle extends ContainerWrap<T> {
+ constructor(ref: T) {
+ super(ref);
+
+ for (const [ key, impl ] of wraps) {
+ this.map.set(key, new impl(ref));
+ }
+ }
+ };
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+
+import { IWrap } from '../wrap';
+
+export class ContainerWrap<T> {
+ protected readonly map: Map<string, IWrap<T>> = new Map();
+
+ constructor(public readonly ref: T) {
+ }
+
+ public get<R extends IWrap<T>>(key: string): R {
+ assert(this.map.has(key), `Unknown implementation key "${key}"`);
+ return this.map.get(key)! as R;
+ }
+}
--- /dev/null
+import { Node } from './node';
+import { IWrap } from './wrap';
+
+export class Enumerator {
+ public getAllNodes(root: IWrap<Node>): ReadonlyArray<IWrap<Node>> {
+ const nodes: Set<IWrap<Node>> = new Set();
+ const queue = [ root ];
+
+ while (queue.length !== 0) {
+ const node = queue.pop()!;
+ for (const slot of node.ref.getSlots()) {
+ if (nodes.has(slot.node)) {
+ continue;
+ }
+
+ nodes.add(slot.node);
+ queue.push(slot.node);
+ }
+ }
+
+ return Array.from(nodes);
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+import * as debugAPI from 'debug';
+import * as source from 'llparse-builder';
+
+import * as frontend from './namespace/frontend';
+import { Container, ContainerWrap } from './container';
+import { IImplementation } from './implementation';
+import { SpanField } from './span-field';
+import { Trie, TrieEmpty, TrieNode, TrieSequence, TrieSingle } from './trie';
+import { Identifier, IUniqueName } from './utils';
+import { IWrap } from './wrap';
+import { Enumerator } from './enumerator';
+import { Peephole } from './peephole';
+
+const debug = debugAPI('llparse:translator');
+
+export { code, node, transform } from './namespace/frontend';
+
+export {
+ source,
+ Identifier,
+ IUniqueName,
+ IWrap,
+ SpanField,
+ Container,
+ ContainerWrap,
+};
+
+// Minimum number of cases of `single` node to make it eligable for
+// `TableLookup` optimization
+export const DEFAULT_MIN_TABLE_SIZE = 32;
+
+// Maximum width of entry in a table for a `TableLookup` optimization
+export const DEFAULT_MAX_TABLE_WIDTH = 4;
+
+type WrappedNode = IWrap<frontend.node.Node>;
+type WrappedCode = IWrap<frontend.code.Code>;
+
+export interface IFrontendLazyOptions {
+ readonly maxTableElemWidth?: number;
+ readonly minTableSize?: number;
+}
+
+export interface IFrontendResult {
+ readonly prefix: string;
+ readonly properties: ReadonlyArray<source.Property>;
+ readonly root: IWrap<frontend.node.Node>;
+ readonly spans: ReadonlyArray<SpanField>;
+ readonly resumptionTargets: ReadonlySet<WrappedNode>;
+}
+
+interface IFrontendOptions {
+ readonly maxTableElemWidth: number;
+ readonly minTableSize: number;
+}
+
+type MatchChildren = WrappedNode[];
+type MatchResult = WrappedNode | ReadonlyArray<WrappedNode>;
+
+interface ITableLookupTarget {
+ readonly keys: number[];
+ readonly noAdvance: boolean;
+ readonly trie: TrieEmpty;
+}
+
+export class Frontend {
+ private readonly options: IFrontendOptions;
+
+ private readonly id: Identifier = new Identifier(this.prefix + '__n_');
+ private readonly codeId: Identifier = new Identifier(this.prefix + '__c_');
+ private readonly map: Map<source.node.Node, WrappedNode> = new Map();
+ private readonly spanMap: Map<source.Span, SpanField> = new Map();
+ private readonly codeCache: Map<string, WrappedCode> = new Map();
+ private readonly resumptionTargets: Set<WrappedNode> = new Set();
+
+ constructor(private readonly prefix: string,
+ private readonly implementation: IImplementation,
+ options: IFrontendLazyOptions = {}) {
+ this.options = {
+ maxTableElemWidth: options.maxTableElemWidth === undefined ?
+ DEFAULT_MAX_TABLE_WIDTH : options.maxTableElemWidth,
+ minTableSize: options.minTableSize === undefined ?
+ DEFAULT_MIN_TABLE_SIZE : options.minTableSize,
+ };
+
+ assert(0 < this.options.maxTableElemWidth,
+ 'Invalid `options.maxTableElemWidth`, must be positive');
+ }
+
+ public compile(root: source.node.Node,
+ properties: ReadonlyArray<source.Property>): IFrontendResult {
+ debug('checking loops');
+ const lc = new source.LoopChecker();
+ lc.check(root);
+
+ debug('allocating spans');
+ const spanAllocator = new source.SpanAllocator();
+ const sourceSpans = spanAllocator.allocate(root);
+
+ const spans = sourceSpans.concurrency.map((concurrent, index) => {
+ const span = new SpanField(index, concurrent.map((sourceSpan) => {
+ return this.translateSpanCode(sourceSpan.callback);
+ }));
+
+ for (const sourceSpan of concurrent) {
+ this.spanMap.set(sourceSpan, span);
+ }
+
+ return span;
+ });
+
+ debug('translating');
+ let out = this.translate(root);
+
+ debug('enumerating');
+ const enumerator = new Enumerator();
+ let nodes = enumerator.getAllNodes(out);
+
+ debug('peephole optimization');
+ const peephole = new Peephole();
+ out = peephole.optimize(out, nodes);
+
+ debug('re-enumerating');
+ nodes = enumerator.getAllNodes(out);
+
+ debug('registering resumption targets');
+ this.resumptionTargets.add(out);
+ for (const node of nodes) {
+ this.registerNode(node);
+ }
+
+ return {
+ prefix: this.prefix,
+ properties,
+ resumptionTargets: this.resumptionTargets,
+ root: out,
+ spans,
+ };
+ }
+
+ // TODO(indutny): remove this in the next major release
+ public getResumptionTargets(): ReadonlySet<WrappedNode> {
+ return this.resumptionTargets;
+ }
+
+ private translate(node: source.node.Node): WrappedNode {
+ if (this.map.has(node)) {
+ return this.map.get(node)!;
+ }
+
+ const id = () => this.id.id(node.name);
+
+ const nodeImpl = this.implementation.node;
+
+ // Instantiate target class
+ let result: MatchResult;
+ if (node instanceof source.node.Error) {
+ result = new nodeImpl.Error(
+ new frontend.node.Error(id(), node.code, node.reason));
+ } else if (node instanceof source.node.Pause) {
+ result = new nodeImpl.Pause(
+ new frontend.node.Pause(id(), node.code, node.reason));
+ } else if (node instanceof source.node.Consume) {
+ result = new nodeImpl.Consume(
+ new frontend.node.Consume(id(), node.field));
+ } else if (node instanceof source.node.SpanStart) {
+ result = new nodeImpl.SpanStart(
+ new frontend.node.SpanStart(id(), this.spanMap.get(node.span)!,
+ this.translateSpanCode(node.span.callback)));
+ } else if (node instanceof source.node.SpanEnd) {
+ result = new nodeImpl.SpanEnd(
+ new frontend.node.SpanEnd(id(), this.spanMap.get(node.span)!,
+ this.translateSpanCode(node.span.callback)));
+ } else if (node instanceof source.node.Invoke) {
+ assert(node.code.signature === 'match' || node.code.signature === 'value',
+ 'Passing `span` callback to `invoke` is not allowed');
+ result = new nodeImpl.Invoke(
+ new frontend.node.Invoke(id(), this.translateCode(node.code)));
+ } else if (node instanceof source.node.Match) {
+ result = this.translateMatch(node);
+ } else {
+ throw new Error(`Unknown node type for "${node.name}" ${node.constructor.toString()}`);
+ }
+
+ // Initialize result
+ const otherwise = node.getOtherwiseEdge();
+
+ if (Array.isArray(result)) {
+ assert(node instanceof source.node.Match);
+ const match = node as source.node.Match;
+
+ // TODO(indutny): move this to llparse-builder?
+ assert.notStrictEqual(otherwise, undefined,
+ `Node "${node.name}" has no \`.otherwise()\``);
+
+ // Assign otherwise to every node of Trie
+ if (otherwise !== undefined) {
+ for (const child of result) {
+ if (!child.ref.otherwise) {
+ child.ref.setOtherwise(this.translate(otherwise.node),
+ otherwise.noAdvance);
+ }
+ }
+ }
+
+ // Assign transform to every node of Trie
+ const transform = this.translateTransform(match.getTransform());
+ for (const child of result) {
+ child.ref.setTransform(transform);
+ }
+
+ assert(result.length >= 1);
+ return result[0];
+ } else {
+ const single: WrappedNode = result as WrappedNode;
+ assert(single.ref instanceof frontend.node.Node);
+
+ // Break loops
+ this.map.set(node, single);
+
+ if (otherwise !== undefined) {
+ single.ref.setOtherwise(this.translate(otherwise.node),
+ otherwise.noAdvance);
+ } else {
+ // TODO(indutny): move this to llparse-builder?
+ assert(node instanceof source.node.Error,
+ `Node "${node.name}" has no \`.otherwise()\``);
+ }
+
+ if (single.ref instanceof frontend.node.Invoke) {
+ for (const edge of node) {
+ single.ref.addEdge(edge.key as number, this.translate(edge.node));
+ }
+ } else {
+ assert.strictEqual(Array.from(node).length, 0);
+ }
+
+ return single;
+ }
+ }
+
+ private registerNode(node: any): void {
+ const nodeImpl = this.implementation.node;
+
+ // Nodes with prologue check (start_pos != end_pos)
+ if (node instanceof nodeImpl.Consume ||
+ node instanceof nodeImpl.Empty ||
+ node instanceof nodeImpl.Sequence ||
+ node instanceof nodeImpl.Single ||
+ node instanceof nodeImpl.SpanStart ||
+ node instanceof nodeImpl.TableLookup) {
+ this.resumptionTargets.add(node);
+
+ // Nodes that can interrupt the execution to be resumed at different node
+ } else if (node instanceof nodeImpl.Pause ||
+ node instanceof nodeImpl.SpanEnd) {
+ this.resumptionTargets.add(node.ref.otherwise!.node);
+ }
+ }
+
+ private translateMatch(node: source.node.Match): MatchResult {
+ const trie = new Trie(node.name);
+
+ const otherwise = node.getOtherwiseEdge();
+ const trieNode = trie.build(Array.from(node));
+ if (trieNode === undefined) {
+ return new this.implementation.node.Empty(
+ new frontend.node.Empty(this.id.id(node.name)));
+ }
+
+ const children: MatchChildren = [];
+ this.translateTrie(node, trieNode, children);
+ assert(children.length >= 1);
+
+ return children;
+ }
+
+ private translateTrie(node: source.node.Match, trie: TrieNode,
+ children: MatchChildren): WrappedNode {
+ if (trie instanceof TrieEmpty) {
+ assert(this.map.has(node));
+ return this.translate(trie.node);
+ } else if (trie instanceof TrieSingle) {
+ return this.translateSingle(node, trie, children);
+ } else if (trie instanceof TrieSequence) {
+ return this.translateSequence(node, trie, children);
+ } else {
+ throw new Error('Unknown trie node');
+ }
+ }
+
+ private translateSingle(node: source.node.Match, trie: TrieSingle,
+ children: MatchChildren)
+ : IWrap<frontend.node.Match> {
+ // See if we can apply TableLookup optimization
+ const maybeTable = this.maybeTableLookup(node, trie, children);
+ if (maybeTable !== undefined) {
+ return maybeTable;
+ }
+
+ const single = new this.implementation.node.Single(
+ new frontend.node.Single(this.id.id(node.name)));
+ children.push(single);
+
+ // Break the loop
+ if (!this.map.has(node)) {
+ this.map.set(node, single);
+ }
+ for (const child of trie.children) {
+ const childNode = this.translateTrie(node, child.node, children);
+
+ single.ref.addEdge({
+ key: child.key,
+ noAdvance: child.noAdvance,
+ node: childNode,
+ value: child.node instanceof TrieEmpty ? child.node.value : undefined,
+ });
+ }
+
+ const otherwise = trie.otherwise;
+ if (otherwise) {
+ single.ref.setOtherwise(
+ this.translateTrie(node, otherwise, children),
+ true,
+ otherwise.value);
+ }
+
+ return single;
+ }
+
+ private maybeTableLookup(node: source.node.Match, trie: TrieSingle,
+ children: MatchChildren)
+ : IWrap<frontend.node.Match> | undefined {
+ if (trie.children.length < this.options.minTableSize) {
+ debug('not enough children of "%s" to allocate table, got %d need %d',
+ node.name, trie.children.length, this.options.minTableSize);
+ return undefined;
+ }
+
+ const targets: Map<source.node.Node, ITableLookupTarget> = new Map();
+
+ const bailout = !trie.children.every((child) => {
+ if (!(child.node instanceof TrieEmpty)) {
+ debug('non-leaf trie child of "%s" prevents table allocation',
+ node.name);
+ return false;
+ }
+
+ const empty: TrieEmpty = child.node;
+
+ // We can't pass values from the table yet
+ if (empty.value !== undefined) {
+ debug('value passing trie leaf of "%s" prevents table allocation',
+ node.name);
+ return false;
+ }
+
+ const target = empty.node;
+ if (!targets.has(target)) {
+ targets.set(target, {
+ keys: [ child.key ],
+ noAdvance: child.noAdvance,
+ trie: empty,
+ });
+ return true;
+ }
+
+ const existing = targets.get(target)!;
+
+ // TODO(indutny): just use it as a sub-key?
+ if (existing.noAdvance !== child.noAdvance) {
+ debug(
+ 'noAdvance mismatch in a trie leaf of "%s" prevents ' +
+ 'table allocation',
+ node.name);
+ return false;
+ }
+
+ existing.keys.push(child.key);
+ return true;
+ });
+
+ if (bailout) {
+ return undefined;
+ }
+
+ // We've width limit for this optimization
+ if (targets.size >= (1 << this.options.maxTableElemWidth)) {
+ debug('too many different trie targets of "%s" for a table allocation',
+ node.name);
+ return undefined;
+ }
+
+ const table = new this.implementation.node.TableLookup(
+ new frontend.node.TableLookup(this.id.id(node.name)));
+ children.push(table);
+
+ // Break the loop
+ if (!this.map.has(node)) {
+ this.map.set(node, table);
+ }
+
+ targets.forEach((target) => {
+ const next = this.translateTrie(node, target.trie, children);
+
+ table.ref.addEdge({
+ keys: target.keys,
+ noAdvance: target.noAdvance,
+ node: next,
+ });
+ });
+
+ debug('optimized "%s" to a table lookup node', node.name);
+ return table;
+ }
+
+ private translateSequence(node: source.node.Match, trie: TrieSequence,
+ children: MatchChildren)
+ : IWrap<frontend.node.Match> {
+ const sequence = new this.implementation.node.Sequence(
+ new frontend.node.Sequence(this.id.id(node.name), trie.select));
+ children.push(sequence);
+
+ // Break the loop
+ if (!this.map.has(node)) {
+ this.map.set(node, sequence);
+ }
+
+ const childNode = this.translateTrie(node, trie.child, children);
+
+ const value = trie.child instanceof TrieEmpty ?
+ trie.child.value : undefined;
+
+ sequence.ref.setEdge(childNode, value);
+
+ return sequence;
+ }
+
+ private translateCode(code: source.code.Code): WrappedCode {
+ const prefixed = this.codeId.id(code.name).name;
+ const codeImpl = this.implementation.code;
+
+ let res: WrappedCode;
+ if (code instanceof source.code.IsEqual) {
+ res = new codeImpl.IsEqual(
+ new frontend.code.IsEqual(prefixed, code.field, code.value));
+ } else if (code instanceof source.code.Load) {
+ res = new codeImpl.Load(
+ new frontend.code.Load(prefixed, code.field));
+ } else if (code instanceof source.code.MulAdd) {
+ // TODO(indutny): verify property type
+ const m = new frontend.code.MulAdd(prefixed, code.field, {
+ base: code.options.base,
+ max: code.options.max,
+ signed: code.options.signed === undefined ? true : code.options.signed,
+ });
+ res = new codeImpl.MulAdd(m);
+ } else if (code instanceof source.code.And) {
+ res = new codeImpl.And(
+ new frontend.code.Or(prefixed, code.field, code.value));
+ } else if (code instanceof source.code.Or) {
+ res = new codeImpl.Or(
+ new frontend.code.Or(prefixed, code.field, code.value));
+ } else if (code instanceof source.code.Store) {
+ res = new codeImpl.Store(
+ new frontend.code.Store(prefixed, code.field));
+ } else if (code instanceof source.code.Test) {
+ res = new codeImpl.Test(
+ new frontend.code.Test(prefixed, code.field, code.value));
+ } else if (code instanceof source.code.Update) {
+ res = new codeImpl.Update(
+ new frontend.code.Update(prefixed, code.field, code.value));
+
+ // External callbacks
+ } else if (code instanceof source.code.Span) {
+ res = new codeImpl.Span(new frontend.code.Span(code.name));
+ } else if (code instanceof source.code.Match) {
+ res = new codeImpl.Match(new frontend.code.Match(code.name));
+ } else if (code instanceof source.code.Value) {
+ res = new codeImpl.Value(new frontend.code.Value(code.name));
+ } else {
+ throw new Error(`Unsupported code: "${code.name}"`);
+ }
+
+ // Re-use instances to build them just once
+ if (this.codeCache.has(res.ref.cacheKey)) {
+ return this.codeCache.get(res.ref.cacheKey)!;
+ }
+
+ this.codeCache.set(res.ref.cacheKey, res);
+ return res;
+ }
+
+ private translateSpanCode(code: source.code.Span): IWrap<frontend.code.Span> {
+ return this.translateCode(code) as IWrap<frontend.code.Span>;
+ }
+
+ private translateTransform(transform?: source.transform.Transform)
+ : IWrap<frontend.transform.Transform> {
+ const transformImpl = this.implementation.transform;
+ if (transform === undefined) {
+ return new transformImpl.ID(new frontend.transform.ID());
+ } else if (transform.name === 'to_lower') {
+ return new transformImpl.ToLower(
+ new frontend.transform.ToLower());
+ } else if (transform.name === 'to_lower_unsafe') {
+ return new transformImpl.ToLowerUnsafe(
+ new frontend.transform.ToLowerUnsafe());
+ } else {
+ throw new Error(`Unsupported transform: "${transform.name}"`);
+ }
+ }
+}
--- /dev/null
+import * as code from '../code';
+import { IWrap } from '../wrap';
+
+export interface ICodeImplementation {
+ readonly And: new(c: code.And) => IWrap<code.And>;
+ readonly IsEqual: new(c: code.IsEqual) => IWrap<code.IsEqual>;
+ readonly Load: new(c: code.Load) => IWrap<code.Load>;
+ readonly Match: new(c: code.Match) => IWrap<code.Match>;
+ readonly MulAdd: new(c: code.MulAdd) => IWrap<code.MulAdd>;
+ readonly Or: new(c: code.Or) => IWrap<code.Or>;
+ readonly Span: new(c: code.Span) => IWrap<code.Span>;
+ readonly Store: new(c: code.Store) => IWrap<code.Store>;
+ readonly Test: new(c: code.Test) => IWrap<code.Test>;
+ readonly Update: new(c: code.Update) => IWrap<code.Update>;
+ readonly Value: new(c: code.Value) => IWrap<code.Value>;
+}
--- /dev/null
+import { ICodeImplementation } from './code';
+import { INodeImplementation } from './node';
+import { ITransformImplementation } from './transform';
+
+export interface IImplementation {
+ readonly code: ICodeImplementation;
+ readonly node: INodeImplementation;
+ readonly transform: ITransformImplementation;
+}
--- /dev/null
+export * from './code';
+export * from './full';
+export * from './node';
+export * from './transform';
--- /dev/null
+import * as node from '../node';
+import { IWrap } from '../wrap';
+
+export interface INodeImplementation {
+ readonly Consume: new(n: node.Consume) => IWrap<node.Consume>;
+ readonly Empty: new(n: node.Empty) => IWrap<node.Empty>;
+ readonly Error: new(n: node.Error) => IWrap<node.Error>;
+ readonly Invoke: new(n: node.Invoke) => IWrap<node.Invoke>;
+ readonly Pause: new(n: node.Pause) => IWrap<node.Pause>;
+ readonly Sequence: new(n: node.Sequence) => IWrap<node.Sequence>;
+ readonly Single: new(n: node.Single) => IWrap<node.Single>;
+ readonly SpanEnd: new(n: node.SpanEnd) => IWrap<node.SpanEnd>;
+ readonly SpanStart: new(n: node.SpanStart) => IWrap<node.SpanStart>;
+ readonly TableLookup: new(n: node.TableLookup) => IWrap<node.TableLookup>;
+}
--- /dev/null
+import * as transform from '../transform';
+import { IWrap } from '../wrap';
+
+export interface ITransformImplementation {
+ readonly ID: new(t: transform.ID) => IWrap<transform.ID>;
+ readonly ToLower: new(t: transform.ToLower) => IWrap<transform.ToLower>;
+ readonly ToLowerUnsafe: new(t: transform.ToLowerUnsafe)
+ => IWrap<transform.ToLowerUnsafe>;
+}
--- /dev/null
+import * as code from '../code';
+import * as node from '../node';
+import * as transform from '../transform';
+
+export { code, node, transform };
--- /dev/null
+import { IUniqueName } from '../utils';
+import { IWrap } from '../wrap';
+import { Slot } from './slot';
+
+export interface IReadonlyOtherwiseEdge {
+ readonly node: IWrap<Node>;
+ readonly noAdvance: boolean;
+ readonly value: number | undefined;
+}
+
+interface IOtherwiseEdge {
+ node: IWrap<Node>;
+ readonly noAdvance: boolean;
+ readonly value: number | undefined;
+}
+
+export abstract class Node {
+ private privOtherwise: IOtherwiseEdge | undefined;
+ private privSlots: ReadonlyArray<Slot> | undefined;
+
+ constructor(public readonly id: IUniqueName) {
+ }
+
+ public setOtherwise(node: IWrap<Node>, noAdvance: boolean, value?: number) {
+ this.privOtherwise = { node, noAdvance, value };
+ }
+
+ public get otherwise(): IReadonlyOtherwiseEdge | undefined {
+ return this.privOtherwise;
+ }
+
+ public *getSlots() {
+ if (this.privSlots === undefined) {
+ this.privSlots = Array.from(this.buildSlots());
+ }
+
+ yield* this.privSlots;
+ }
+
+ protected *buildSlots() {
+ const otherwise = this.privOtherwise;
+ if (otherwise !== undefined) {
+ yield new Slot(otherwise.node, (value) => otherwise.node = value);
+ }
+ }
+}
--- /dev/null
+import { IUniqueName } from '../utils';
+import { Node } from './base';
+
+export class Consume extends Node {
+ constructor(id: IUniqueName, readonly field: string) {
+ super(id);
+ }
+}
--- /dev/null
+import { Node } from './base';
+
+export class Empty extends Node {
+}
--- /dev/null
+import { IUniqueName } from '../utils';
+import { Node } from './base';
+
+export class Error extends Node {
+ constructor(id: IUniqueName, public readonly code: number,
+ public readonly reason: string) {
+ super(id);
+ }
+}
--- /dev/null
+export * from './base';
+export * from './consume';
+export * from './empty';
+export * from './error';
+export * from './invoke';
+export * from './match';
+export * from './pause';
+export * from './sequence';
+export * from './single';
+export * from './slot';
+export * from './span-end';
+export * from './span-start';
+export * from './table-lookup';
--- /dev/null
+import { Code } from '../code';
+import { IUniqueName } from '../utils';
+import { IWrap } from '../wrap';
+import { Node } from './base';
+import { Slot } from './slot';
+
+interface IInvokeEdge {
+ readonly code: number;
+ node: IWrap<Node>;
+}
+
+export interface IReadonlyInvokeEdge {
+ readonly code: number;
+ readonly node: IWrap<Node>;
+}
+
+export class Invoke extends Node {
+ private readonly privEdges: IInvokeEdge[] = [];
+
+ constructor(id: IUniqueName, public readonly code: IWrap<Code>) {
+ super(id);
+ }
+
+ public addEdge(code: number, node: IWrap<Node>): void {
+ this.privEdges.push({ code, node });
+ }
+
+ public get edges(): ReadonlyArray<IReadonlyInvokeEdge> {
+ return this.privEdges;
+ }
+
+ protected *buildSlots() {
+ for (const edge of this.privEdges) {
+ yield new Slot(edge.node, (value) => edge.node = value);
+ }
+
+ yield* super.buildSlots();
+ }
+}
--- /dev/null
+import { Transform } from '../transform';
+import { IWrap } from '../wrap';
+import { Node } from './base';
+
+export class Match extends Node {
+ public transform?: IWrap<Transform>;
+
+ public setTransform(transform: IWrap<Transform>): void {
+ this.transform = transform;
+ }
+}
--- /dev/null
+import { Error as ErrorNode } from './error';
+
+export class Pause extends ErrorNode {
+}
--- /dev/null
+import * as assert from 'assert';
+import { Buffer } from 'buffer';
+
+import { IUniqueName } from '../utils';
+import { IWrap } from '../wrap';
+import { Node } from './base';
+import { Match } from './match';
+import { Slot } from './slot';
+
+interface ISequenceEdge {
+ node: IWrap<Node>;
+ readonly value: number | undefined;
+}
+
+export interface IReadonlySequenceEdge {
+ readonly node: IWrap<Node>;
+ readonly value: number | undefined;
+}
+
+export class Sequence extends Match {
+ private privEdge?: ISequenceEdge;
+
+ constructor(id: IUniqueName, public readonly select: Buffer) {
+ super(id);
+ }
+
+ public setEdge(node: IWrap<Node>, value?: number | undefined) {
+ assert.strictEqual(this.privEdge, undefined);
+ this.privEdge = { node, value };
+ }
+
+ public get edge(): IReadonlySequenceEdge | undefined {
+ return this.privEdge;
+ }
+
+ protected *buildSlots() {
+ const edge = this.privEdge;
+ if (edge !== undefined) {
+ yield new Slot(edge.node, (value) => edge.node = value);
+ }
+
+ yield* super.buildSlots();
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+
+import { IUniqueName } from '../utils';
+import { IWrap } from '../wrap';
+import { Node } from './base';
+import { Match } from './match';
+import { Slot } from './slot';
+
+interface ISingleEdge {
+ readonly key: number;
+ node: IWrap<Node>;
+ readonly noAdvance: boolean;
+ readonly value: number | undefined;
+}
+
+export interface IReadonlySingleEdge {
+ readonly key: number;
+ node: IWrap<Node>;
+ readonly noAdvance: boolean;
+ readonly value: number | undefined;
+}
+
+export class Single extends Match {
+ private readonly privEdges: ISingleEdge[] = [];
+
+ public addEdge(edge: IReadonlySingleEdge): void {
+ this.privEdges.push({
+ key: edge.key,
+ noAdvance: edge.noAdvance,
+ node: edge.node,
+ value: edge.value,
+ });
+ }
+
+ public get edges(): ReadonlyArray<IReadonlySingleEdge> {
+ return this.privEdges;
+ }
+
+ protected *buildSlots() {
+ for (const edge of this.privEdges) {
+ yield new Slot(edge.node, (value) => edge.node = value);
+ }
+
+ yield* super.buildSlots();
+ }
+}
--- /dev/null
+import { IWrap } from '../wrap';
+import { Node } from './base';
+
+export class Slot {
+ private privNode: IWrap<Node>;
+
+ constructor(node: IWrap<Node>,
+ private readonly privUpdate: (value: IWrap<Node>) => void) {
+ this.privNode = node;
+ }
+
+ public get node(): IWrap<Node> {
+ return this.privNode;
+ }
+
+ public set node(value: IWrap<Node>) {
+ this.privNode = value;
+ this.privUpdate(value);
+ }
+}
--- /dev/null
+import { Span } from '../code';
+import { SpanField } from '../span-field';
+import { IUniqueName } from '../utils';
+import { IWrap } from '../wrap';
+import { Node } from './base';
+
+export class SpanEnd extends Node {
+ constructor(id: IUniqueName, public readonly field: SpanField,
+ public readonly callback: IWrap<Span>) {
+ super(id);
+ }
+}
--- /dev/null
+import { Span } from '../code';
+import { SpanField } from '../span-field';
+import { IUniqueName } from '../utils';
+import { IWrap } from '../wrap';
+import { Node } from './base';
+
+export class SpanStart extends Node {
+ constructor(id: IUniqueName, public readonly field: SpanField,
+ public readonly callback: IWrap<Span>) {
+ super(id);
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+
+import { IUniqueName } from '../utils';
+import { IWrap } from '../wrap';
+import { Node } from './base';
+import { Match } from './match';
+import { Slot } from './slot';
+
+interface ITableEdge {
+ readonly keys: ReadonlyArray<number>;
+ node: IWrap<Node>;
+ readonly noAdvance: boolean;
+}
+
+export interface IReadonlyTableEdge {
+ readonly keys: ReadonlyArray<number>;
+ readonly node: IWrap<Node>;
+ readonly noAdvance: boolean;
+}
+
+export class TableLookup extends Match {
+ private readonly privEdges: ITableEdge[] = [];
+
+ public addEdge(edge: IReadonlyTableEdge): void {
+ this.privEdges.push({
+ keys: edge.keys,
+ noAdvance: edge.noAdvance,
+ node: edge.node,
+ });
+ }
+
+ public get edges(): ReadonlyArray<IReadonlyTableEdge> {
+ return this.privEdges;
+ }
+
+ protected *buildSlots() {
+ for (const edge of this.privEdges) {
+ yield new Slot(edge.node, (value) => edge.node = value);
+ }
+
+ yield* super.buildSlots();
+ }
+}
--- /dev/null
+import { Node, Empty } from './node';
+import { IWrap } from './wrap';
+
+type WrapNode = IWrap<Node>;
+type WrapList = ReadonlyArray<WrapNode>;
+
+export class Peephole {
+ public optimize(root: WrapNode, nodes: WrapList): WrapNode {
+ let changed = new Set(nodes);
+
+ while (changed.size !== 0) {
+ const previous = changed;
+ changed = new Set();
+
+ for (const node of previous) {
+ if (this.optimizeNode(node)) {
+ changed.add(node);
+ }
+ }
+ }
+
+ while (root.ref instanceof Empty) {
+ if (!root.ref.otherwise!.noAdvance) {
+ break;
+ }
+
+ root = root.ref.otherwise!.node;
+ }
+
+ return root;
+ }
+
+ public optimizeNode(node: WrapNode): boolean {
+ let changed = false;
+ for (const slot of node.ref.getSlots()) {
+ if (!(slot.node.ref instanceof Empty)) {
+ continue;
+ }
+
+ const otherwise = slot.node.ref.otherwise!;
+
+ // Node actively skips, can't optimize!
+ if (!otherwise.noAdvance) {
+ continue;
+ }
+
+ slot.node = otherwise.node;
+ changed = true;
+ }
+ return changed;
+ }
+}
--- /dev/null
+import { Span } from './code';
+import { IWrap } from './wrap';
+
+export class SpanField {
+ constructor(public readonly index: number,
+ public readonly callbacks: ReadonlyArray<IWrap<Span>>) {
+ }
+}
--- /dev/null
+export abstract class Transform {
+ constructor(public readonly name: string) {
+ }
+}
--- /dev/null
+import { Transform } from './base';
+
+export class ID extends Transform {
+ constructor() {
+ super('id');
+ }
+}
--- /dev/null
+export * from './base';
+export * from './id';
+export * from './to-lower';
+export * from './to-lower-unsafe';
--- /dev/null
+import { Transform } from './base';
+
+export class ToLowerUnsafe extends Transform {
+ constructor() {
+ super('to_lower_unsafe');
+ }
+}
--- /dev/null
+import { Transform } from './base';
+
+export class ToLower extends Transform {
+ constructor() {
+ super('to_lower');
+ }
+}
--- /dev/null
+import { node as api } from 'llparse-builder';
+import { TrieNode } from './node';
+
+export class TrieEmpty extends TrieNode {
+ constructor(public readonly node: api.Node,
+ public readonly value: number | undefined) {
+ super();
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+import { Buffer } from 'buffer';
+import { Edge, node as api } from 'llparse-builder';
+
+import { TrieEmpty } from './empty';
+import { TrieNode } from './node';
+import { TrieSequence } from './sequence';
+import { ITrieSingleChild, TrieSingle } from './single';
+
+export { TrieEmpty, TrieNode, TrieSequence, TrieSingle };
+
+interface IEdge {
+ readonly key: Buffer;
+ readonly node: api.Node;
+ readonly noAdvance: boolean;
+ readonly value: number | undefined;
+}
+
+type Path = ReadonlyArray<Buffer>;
+type EdgeArray = ReadonlyArray<IEdge>;
+
+export class Trie {
+ constructor(private readonly name: string) {
+ }
+
+ public build(edges: ReadonlyArray<Edge>): undefined | TrieNode {
+ if (edges.length === 0) {
+ return undefined;
+ }
+
+ const internalEdges: IEdge[] = [];
+ for (const edge of edges) {
+ internalEdges.push({
+ key: edge.key as Buffer,
+ noAdvance: edge.noAdvance,
+ node: edge.node,
+ value: edge.value,
+ });
+ }
+
+ return this.level(internalEdges, []);
+ }
+
+ private level(edges: EdgeArray, path: Path): TrieNode {
+ const first = edges[0].key;
+ const last = edges[edges.length - 1].key;
+
+ // Leaf
+ if (edges.length === 1 && edges[0].key.length === 0) {
+ return new TrieEmpty(edges[0].node, edges[0].value);
+ }
+
+ // Find the longest common sub-string
+ let common = 0;
+ for (; common < first.length; common++) {
+ if (first[common] !== last[common]) {
+ break;
+ }
+ }
+
+ // Sequence
+ if (common > 1) {
+ return this.sequence(edges, first.slice(0, common), path);
+ }
+
+ // Single
+ return this.single(edges, path);
+ }
+
+ private slice(edges: EdgeArray, off: number): EdgeArray {
+ return edges.map((edge) => {
+ return {
+ key: edge.key.slice(off),
+ noAdvance: edge.noAdvance,
+ node: edge.node,
+ value: edge.value,
+ };
+ }).sort((a, b) => {
+ return a.key.compare(b.key);
+ });
+ }
+
+ private sequence(edges: EdgeArray, prefix: Buffer, path: Path): TrieNode {
+ const sliced = this.slice(edges, prefix.length);
+ const noAdvance = sliced.some((edge) => edge.noAdvance);
+ assert(!noAdvance);
+ const child = this.level(sliced, path.concat(prefix));
+
+ return new TrieSequence(prefix, child);
+ }
+
+ private single(edges: EdgeArray, path: Path): TrieNode {
+ // Check for duplicates
+ if (edges[0].key.length === 0) {
+ assert(path.length !== 0, `Empty root entry at "${this.name}"`);
+ assert(edges.length === 1 || edges[1].key.length !== 0,
+ `Duplicate entries in "${this.name}" at [ ${path.join(', ')} ]`);
+ }
+
+ let otherwise: TrieEmpty | undefined;
+ const keys: Map<number, IEdge[]> = new Map();
+ for (const edge of edges) {
+ if (edge.key.length === 0) {
+ otherwise = new TrieEmpty(edge.node, edge.value);
+ continue;
+ }
+ const key = edge.key[0];
+
+ if (keys.has(key)) {
+ keys.get(key)!.push(edge);
+ } else {
+ keys.set(key, [ edge ]);
+ }
+ }
+
+ const children: ITrieSingleChild[] = [];
+ keys.forEach((subEdges, key) => {
+ const sliced = this.slice(subEdges, 1);
+ const subpath = path.concat(Buffer.from([ key ]));
+
+ const noAdvance = subEdges.some((edge) => edge.noAdvance);
+ const allSame = subEdges.every((edge) => edge.noAdvance === noAdvance);
+
+ assert(allSame || subEdges.length === 0,
+ 'Conflicting `.peek()` and `.match()` entries in ' +
+ `"${this.name}" at [ ${subpath.join(', ')} ]`);
+
+ children.push({
+ key,
+ noAdvance,
+ node: this.level(sliced, subpath),
+ });
+ });
+ return new TrieSingle(children, otherwise);
+ }
+}
--- /dev/null
+export abstract class TrieNode {
+}
--- /dev/null
+import { node as api } from 'llparse-builder';
+import { TrieNode } from './node';
+
+export class TrieSequence extends TrieNode {
+ constructor(public readonly select: Buffer,
+ public readonly child: TrieNode) {
+ super();
+ }
+}
--- /dev/null
+import { node as api } from 'llparse-builder';
+import { TrieEmpty } from './empty';
+import { TrieNode } from './node';
+
+export interface ITrieSingleChild {
+ readonly key: number;
+ readonly noAdvance: boolean;
+ readonly node: TrieNode;
+}
+
+export class TrieSingle extends TrieNode {
+ constructor(public readonly children: ReadonlyArray<ITrieSingleChild>,
+ public readonly otherwise: TrieEmpty | undefined) {
+ super();
+ }
+}
--- /dev/null
+export interface IUniqueName {
+ readonly name: string;
+ readonly originalName: string;
+}
+
+export class Identifier {
+ private readonly ns: Set<string> = new Set();
+
+ constructor(private readonly prefix: string = '',
+ private readonly postfix: string = '') {
+ }
+
+ public id(name: string): IUniqueName {
+ let target = this.prefix + name + this.postfix;
+ if (this.ns.has(target)) {
+ let i = 1;
+ for (; i < this.ns.size; i++) {
+ if (!this.ns.has(target + '_' + i)) {
+ break;
+ }
+ }
+
+ target += '_' + i;
+ }
+
+ this.ns.add(target);
+ return {
+ name: target,
+ originalName: name,
+ };
+ }
+}
--- /dev/null
+export { Identifier, IUniqueName } from './identifier';
+
+export function toCacheKey(value: number | boolean): string {
+ if (typeof value === 'number') {
+ if (value < 0) {
+ return 'm' + (-value);
+ } else {
+ return value.toString();
+ }
+ } else if (typeof value === 'boolean') {
+ if (value === true) {
+ return 'true';
+ } else {
+ return 'false';
+ }
+ } else {
+ throw new Error(`Unsupported value: "${value}"`);
+ }
+}
--- /dev/null
+export interface IWrap<T> {
+ readonly ref: T;
+}
--- /dev/null
+import * as assert from 'assert';
+
+import { Builder } from 'llparse-builder';
+
+import { Container, ContainerWrap, Frontend, node } from '../src/frontend';
+import implementation from './fixtures/a-implementation';
+import { Node } from './fixtures/implementation/node/base';
+
+describe('llparse-frontend/Container', () => {
+ let b: Builder;
+ beforeEach(() => {
+ b = new Builder();
+ });
+
+ it('should translate nodes to implementation', () => {
+ const comb = new Container();
+ comb.add('a', implementation);
+ comb.add('b', implementation);
+
+ const f = new Frontend('llparse', comb.build());
+
+ const root = b.node('root');
+
+ root.match('ab', root);
+ root.match('acd', root);
+ root.match('efg', root);
+ root.otherwise(b.error(123, 'hello'));
+
+ const fRoot = f.compile(root, []).root as ContainerWrap<node.Node>;
+
+ const out: string[] = [];
+ (fRoot.get('a') as Node<node.Node>).build(out);
+
+ assert.deepStrictEqual(out, [
+ '<Single name=llparse__n_root k97=llparse__n_root_1 ' +
+ 'k101=llparse__n_root_3 otherwise-no_adv=llparse__n_error/>',
+ '<Single name=llparse__n_root_1 k98=llparse__n_root ' +
+ 'k99=llparse__n_root_2 otherwise-no_adv=llparse__n_error/>',
+ '<Single name=llparse__n_root_2 k100=llparse__n_root ' +
+ 'otherwise-no_adv=llparse__n_error/>',
+ '<ErrorNode name=llparse__n_error code=123 reason="hello"/>',
+ '<Sequence name=llparse__n_root_3 select="6667" ' +
+ 'otherwise-no_adv=llparse__n_error/>',
+ ]);
+ });
+});
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class And extends Code<code.And> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+export abstract class Code<T> {
+ constructor(public readonly ref: T) {
+ }
+
+ public abstract build(): string;
+}
--- /dev/null
+import { And } from './and';
+import { IsEqual } from './is-equal';
+import { Load } from './load';
+import { Match } from './match';
+import { MulAdd } from './mul-add';
+import { Or } from './or';
+import { Span } from './span';
+import { Store } from './store';
+import { Test } from './test';
+import { Update } from './update';
+import { Value } from './value';
+
+export default {
+ And, IsEqual, Load, Match, MulAdd, Or, Span, Store, Test, Update, Value,
+};
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class IsEqual extends Code<code.IsEqual> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Load extends Code<code.Load> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Match extends Code<code.Match> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class MulAdd extends Code<code.MulAdd> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Or extends Code<code.Or> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Span extends Code<code.Span> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Store extends Code<code.Store> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Test extends Code<code.Test> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Update extends Code<code.Update> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Value extends Code<code.Value> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import code from './code';
+import node from './node';
+import transform from './transform';
+
+export default { code, node, transform };
--- /dev/null
+import { ContainerWrap, node } from '../../../../src/frontend';
+
+export abstract class Node<T extends node.Node> {
+ private built: boolean = false;
+
+ constructor(public readonly ref: T) {
+ }
+
+ public build(out: string[]): void {
+ if (this.built) {
+ return;
+ }
+
+ this.built = true;
+ this.doBuild(out);
+
+ if (this.ref.otherwise !== undefined) {
+ const cwrap = this.ref.otherwise.node as ContainerWrap<T>;
+ const otherwise = cwrap.get<Node<T>>('a');
+ otherwise.build(out);
+ }
+ }
+
+ protected format(value: string): string {
+ let otherwise: string = '';
+ if (this.ref.otherwise !== undefined) {
+ const otherwiseRef = this.ref.otherwise.node.ref;
+ otherwise = ' otherwise' +
+ `${this.ref.otherwise.noAdvance ? '-no_adv' : ''}=` +
+ `${otherwiseRef.id.name}`;
+ }
+
+ return `<${this.constructor.name} name=${this.ref.id.name} ` +
+ `${value}${otherwise}/>`;
+ }
+
+ protected abstract doBuild(out: string[]): void;
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Consume extends Node<node.Consume> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(`field=${this.ref.field}`));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Empty extends Node<node.Empty> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+class ErrorNode extends Node<node.Error> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(`code=${this.ref.code} reason="${this.ref.reason}"`));
+ }
+}
+
+export { ErrorNode as Error };
--- /dev/null
+import { Consume } from './consume';
+import { Empty } from './empty';
+import { Error } from './error';
+import { Invoke } from './invoke';
+import { Pause } from './pause';
+import { Sequence } from './sequence';
+import { Single } from './single';
+import { SpanEnd } from './span-end';
+import { SpanStart } from './span-start';
+import { TableLookup } from './table-lookup';
+
+export default {
+ Consume, Empty, Error, Invoke, Pause, Sequence, Single, SpanEnd,
+ SpanStart, TableLookup,
+};
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Invoke extends Node<node.Invoke> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Pause extends Node<node.Pause> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Sequence extends Node<node.Sequence> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(`select="${this.ref.select.toString('hex')}"`));
+ }
+}
--- /dev/null
+import { ContainerWrap, node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Single extends Node<node.Single> {
+ protected doBuild(out: string[]): void {
+ const edges: string[] = [];
+ for (const edge of this.ref.edges) {
+ edges.push(`k${edge.key}${edge.noAdvance ? '-no_adv-' : ''}=` +
+ `${edge.node.ref.id.name}`);
+ }
+ out.push(this.format(edges.join(' ')));
+
+ for (const edge of this.ref.edges) {
+ const edgeNode = edge.node as ContainerWrap<node.Node>;
+ edgeNode.get<Node<node.Node>>('a').build(out);
+ }
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class SpanEnd extends Node<node.SpanEnd> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class SpanStart extends Node<node.SpanStart> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class TableLookup extends Node<node.TableLookup> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+export abstract class Transform<T> {
+ constructor(public readonly ref: T) {
+ }
+
+ public abstract build(): string;
+}
--- /dev/null
+import { transform } from '../../../../src/frontend';
+import { Transform } from './base';
+
+export class ID extends Transform<transform.ID> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { ID } from './id';
+import { ToLower } from './to-lower';
+import { ToLowerUnsafe } from './to-lower-unsafe';
+
+export default { ID, ToLower, ToLowerUnsafe };
--- /dev/null
+import { transform } from '../../../../src/frontend';
+import { Transform } from './base';
+
+export class ToLowerUnsafe extends Transform<transform.ToLowerUnsafe> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { transform } from '../../../../src/frontend';
+import { Transform } from './base';
+
+export class ToLower extends Transform<transform.ToLower> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class And extends Code<code.And> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+export abstract class Code<T> {
+ constructor(public readonly ref: T) {
+ }
+
+ public abstract build(): string;
+}
--- /dev/null
+import { And } from './and';
+import { IsEqual } from './is-equal';
+import { Load } from './load';
+import { Match } from './match';
+import { MulAdd } from './mul-add';
+import { Or } from './or';
+import { Span } from './span';
+import { Store } from './store';
+import { Test } from './test';
+import { Update } from './update';
+import { Value } from './value';
+
+export default {
+ And, IsEqual, Load, Match, MulAdd, Or, Span, Store, Test, Update, Value,
+};
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class IsEqual extends Code<code.IsEqual> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Load extends Code<code.Load> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Match extends Code<code.Match> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class MulAdd extends Code<code.MulAdd> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Or extends Code<code.Or> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Span extends Code<code.Span> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Store extends Code<code.Store> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Test extends Code<code.Test> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Update extends Code<code.Update> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { code } from '../../../../src/frontend';
+import { Code } from './base';
+
+export class Value extends Code<code.Value> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import code from './code';
+import node from './node';
+import transform from './transform';
+
+export default { code, node, transform };
--- /dev/null
+import { node } from '../../../../src/frontend';
+
+export abstract class Node<T extends node.Node> {
+ private built: boolean = false;
+
+ constructor(public readonly ref: T) {
+ }
+
+ public build(out: string[]): void {
+ if (this.built) {
+ return;
+ }
+
+ this.built = true;
+ this.doBuild(out);
+
+ if (this.ref.otherwise !== undefined) {
+ (this.ref.otherwise.node as Node<T>).build(out);
+ }
+ }
+
+ protected format(value: string): string {
+ let otherwise: string = '';
+ if (this.ref.otherwise !== undefined) {
+ const otherwiseRef = this.ref.otherwise.node.ref;
+ otherwise = ' otherwise' +
+ `${this.ref.otherwise.noAdvance ? '-no_adv' : ''}=` +
+ `${otherwiseRef.id.name}`;
+ if (this.ref.otherwise.value !== undefined) {
+ otherwise += `:${this.ref.otherwise.value}`;
+ }
+ }
+
+ return `<${this.constructor.name} name=${this.ref.id.name} ` +
+ `${value}${otherwise}/>`;
+ }
+
+ protected abstract doBuild(out: string[]): void;
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Consume extends Node<node.Consume> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(`field=${this.ref.field}`));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Empty extends Node<node.Empty> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+class ErrorNode extends Node<node.Error> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(`code=${this.ref.code} reason="${this.ref.reason}"`));
+ }
+}
+
+export { ErrorNode as Error };
--- /dev/null
+import { Consume } from './consume';
+import { Empty } from './empty';
+import { Error } from './error';
+import { Invoke } from './invoke';
+import { Pause } from './pause';
+import { Sequence } from './sequence';
+import { Single } from './single';
+import { SpanEnd } from './span-end';
+import { SpanStart } from './span-start';
+import { TableLookup } from './table-lookup';
+
+export default {
+ Consume, Empty, Error, Invoke, Pause, Sequence, Single, SpanEnd,
+ SpanStart, TableLookup,
+};
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Invoke extends Node<node.Invoke> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Pause extends Node<node.Pause> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Sequence extends Node<node.Sequence> {
+ protected doBuild(out: string[]): void {
+ let str = `select="${this.ref.select.toString('hex')}" ` +
+ `edge="${this.ref.edge!.node.ref.id.name}"`;
+ if (this.ref.edge!.value !== undefined) {
+ str += `:${this.ref.edge!.value}`;
+ }
+ out.push(this.format(str));
+ const edgeNode = this.ref.edge!.node as Node<node.Node>;
+ edgeNode.build(out);
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class Single extends Node<node.Single> {
+ protected doBuild(out: string[]): void {
+ const edges: string[] = [];
+ for (const edge of this.ref.edges) {
+ let str = `k${edge.key}${edge.noAdvance ? '-no_adv-' : ''}=` +
+ `${edge.node.ref.id.name}`;
+ if (edge.value !== undefined) {
+ str += `:${edge.value}`;
+ }
+ edges.push(str);
+ }
+ out.push(this.format(edges.join(' ')));
+
+ for (const edge of this.ref.edges) {
+ const edgeNode = edge.node as Node<node.Node>;
+ edgeNode.build(out);
+ }
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class SpanEnd extends Node<node.SpanEnd> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class SpanStart extends Node<node.SpanStart> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+import { node } from '../../../../src/frontend';
+import { Node } from './base';
+
+export class TableLookup extends Node<node.TableLookup> {
+ protected doBuild(out: string[]): void {
+ out.push(this.format(''));
+ }
+}
--- /dev/null
+export abstract class Transform<T> {
+ constructor(public readonly ref: T) {
+ }
+
+ public abstract build(): string;
+}
--- /dev/null
+import { transform } from '../../../../src/frontend';
+import { Transform } from './base';
+
+export class ID extends Transform<transform.ID> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { ID } from './id';
+import { ToLower } from './to-lower';
+import { ToLowerUnsafe } from './to-lower-unsafe';
+
+export default { ID, ToLower, ToLowerUnsafe };
--- /dev/null
+import { transform } from '../../../../src/frontend';
+import { Transform } from './base';
+
+export class ToLowerUnsafe extends Transform<transform.ToLowerUnsafe> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import { transform } from '../../../../src/frontend';
+import { Transform } from './base';
+
+export class ToLower extends Transform<transform.ToLower> {
+ public build(): string {
+ return '';
+ }
+}
--- /dev/null
+import * as assert from 'assert';
+
+import * as source from 'llparse-builder';
+
+import { Frontend, node } from '../src/frontend';
+import implementation from './fixtures/implementation';
+import { Node } from './fixtures/implementation/node/base';
+
+function checkNodes(f: Frontend, root: source.node.Node,
+ expected: ReadonlyArray<string>) {
+ const fRoot = f.compile(root, []).root as Node<node.Node>;
+
+ const out: string[] = [];
+ fRoot.build(out);
+
+ assert.deepStrictEqual(out, expected);
+
+ return fRoot;
+}
+
+function checkResumptionTargets(f: Frontend, expected: ReadonlyArray<string>) {
+ const targets = Array.from(f.getResumptionTargets()).map((t) => {
+ return t.ref.id.name;
+ });
+
+ assert.deepStrictEqual(targets, expected);
+}
+
+describe('llparse-frontend', () => {
+ let b: source.Builder;
+ let f: Frontend;
+ beforeEach(() => {
+ b = new source.Builder();
+ f = new Frontend('llparse', implementation);
+ });
+
+ it('should translate nodes to implementation', () => {
+ const root = b.node('root');
+
+ root.match('ab', root);
+ root.match('acd', root);
+ root.match('efg', root);
+ root.otherwise(b.error(123, 'hello'));
+
+ checkNodes(f, root, [
+ '<Single name=llparse__n_root k97=llparse__n_root_1 ' +
+ 'k101=llparse__n_root_3 otherwise-no_adv=llparse__n_error/>',
+ '<Single name=llparse__n_root_1 k98=llparse__n_root ' +
+ 'k99=llparse__n_root_2 otherwise-no_adv=llparse__n_error/>',
+ '<Single name=llparse__n_root_2 k100=llparse__n_root ' +
+ 'otherwise-no_adv=llparse__n_error/>',
+ '<ErrorNode name=llparse__n_error code=123 reason="hello"/>',
+ '<Sequence name=llparse__n_root_3 select="6667" ' +
+ 'edge=\"llparse__n_root\" ' +
+ 'otherwise-no_adv=llparse__n_error/>',
+ ]);
+
+ checkResumptionTargets(f, [
+ 'llparse__n_root',
+ 'llparse__n_root_1',
+ 'llparse__n_root_3',
+ 'llparse__n_root_2',
+ ]);
+ });
+
+ it('should do peephole optimization', () => {
+ const root = b.node('root');
+ const root1 = b.node('a');
+ const root2 = b.node('b');
+ const node1 = b.node('c');
+ const node2 = b.node('d');
+
+ root.otherwise(root1);
+ root1.otherwise(root2);
+ root2.skipTo(node1);
+ node1.otherwise(node2);
+ node2.otherwise(root);
+
+ checkNodes(f, root, [
+ '<Empty name=llparse__n_b otherwise=llparse__n_b/>',
+ ]);
+
+ checkResumptionTargets(f, [
+ 'llparse__n_b',
+ ]);
+ });
+
+ it('should generate proper resumption targets', () => {
+ b.property('i64', 'counter');
+
+ const root = b.node('root');
+ const end = b.node('end');
+ const store = b.invoke(b.code.store('counter'));
+
+ root.select({ a: 1, b: 2 }, store);
+ root.otherwise(b.error(1, 'okay'));
+
+ store.otherwise(end);
+
+ end.match('ohai', root);
+ end.match('paus', b.pause(1, 'paused').otherwise(
+ b.pause(2, 'paused').otherwise(root)));
+ end.otherwise(b.error(2, 'ohai'));
+
+ checkNodes(f, root, [
+ '<Single name=llparse__n_root k97=llparse__n_invoke_store_counter:1 ' +
+ 'k98=llparse__n_invoke_store_counter:2 ' +
+ 'otherwise-no_adv=llparse__n_error_1/>',
+ '<Invoke name=llparse__n_invoke_store_counter ' +
+ 'otherwise-no_adv=llparse__n_end/>',
+ '<Single name=llparse__n_end k111=llparse__n_end_1 ' +
+ 'k112=llparse__n_end_2 otherwise-no_adv=llparse__n_error/>',
+ '<Sequence name=llparse__n_end_1 select="686169" ' +
+ 'edge="llparse__n_root" otherwise-no_adv=llparse__n_error/>',
+ '<ErrorNode name=llparse__n_error code=2 reason="ohai"/>',
+ '<Sequence name=llparse__n_end_2 select="617573" ' +
+ 'edge="llparse__n_pause" otherwise-no_adv=llparse__n_error/>',
+ '<Pause name=llparse__n_pause otherwise-no_adv=llparse__n_pause_1/>',
+ '<Pause name=llparse__n_pause_1 otherwise-no_adv=llparse__n_root/>',
+ '<ErrorNode name=llparse__n_error_1 code=1 reason="okay"/>',
+ ]);
+
+ checkResumptionTargets(f, [
+ 'llparse__n_root',
+ 'llparse__n_end',
+ 'llparse__n_end_1',
+ 'llparse__n_end_2',
+ 'llparse__n_pause_1',
+ ]);
+ });
+
+ it('should translate Span code into Span', () => {
+ const root = b.invoke(b.code.span('my_span'));
+ root.otherwise(b.error(1, 'okay'));
+
+ const fRoot = checkNodes(f, root, [
+ '<Invoke name=llparse__n_invoke_my_span ' +
+ 'otherwise-no_adv=llparse__n_error/>',
+ '<ErrorNode name=llparse__n_error code=1 reason="okay"/>',
+ ]);
+
+ assert((fRoot.ref as any).code instanceof implementation.code.Span);
+ });
+
+ it('should translate overlapping matches', () => {
+ const root = b.node('root');
+
+ root.match('ab', root);
+ root.match('abc', root);
+ root.otherwise(b.error(123, 'hello'));
+
+ checkNodes(f, root, [
+ '<Sequence name=llparse__n_root select="6162" edge="llparse__n_root_1" otherwise-no_adv=llparse__n_error/>',
+ '<Single name=llparse__n_root_1 k99=llparse__n_root otherwise-no_adv=llparse__n_root/>',
+ '<ErrorNode name=llparse__n_error code=123 reason="hello"/>',
+ ]);
+
+ checkResumptionTargets(f, [
+ 'llparse__n_root',
+ 'llparse__n_root_1',
+ ]);
+ });
+
+ it('should translate overlapping matches with values', () => {
+ const root = b.node('root');
+ const store = b.invoke(b.code.store('counter'));
+
+ root.select({
+ ab: 1,
+ abc: 2,
+ }, store);
+ store.otherwise(root);
+ root.otherwise(b.error(123, 'hello'));
+
+ checkNodes(f, root, [
+ '<Sequence name=llparse__n_root select="6162" edge="llparse__n_root_1" otherwise-no_adv=llparse__n_error/>',
+ '<Single name=llparse__n_root_1 k99=llparse__n_invoke_store_counter:2 otherwise-no_adv=llparse__n_invoke_store_counter:1/>',
+ '<Invoke name=llparse__n_invoke_store_counter otherwise-no_adv=llparse__n_root/>',
+ '<ErrorNode name=llparse__n_error code=123 reason="hello"/>',
+ ]);
+
+ checkResumptionTargets(f, [
+ 'llparse__n_root',
+ 'llparse__n_root_1',
+ ]);
+ });
+});
--- /dev/null
+{
+ "compilerOptions": {
+ "strict": true,
+ "target": "es2017",
+ "module": "commonjs",
+ "moduleResolution": "node",
+ "outDir": "./lib",
+ "declaration": true,
+ "pretty": true,
+ "sourceMap": true
+ },
+ "include": [
+ "src/**/*.ts"
+ ]
+}
--- /dev/null
+{
+ "defaultSeverity": "error",
+ "extends": [
+ "tslint:recommended"
+ ],
+ "jsRules": {},
+ "rules": {
+ "no-bitwise": null,
+ "max-line-length": [true, 80],
+ "max-classes-per-file": [true, 1, "exclude-class-expressions"],
+ "quotemark": [
+ true, "single", "avoid-escape", "avoid-template"
+ ]
+ },
+ "rulesDirectory": []
+}
projects / node-undici.git / commitdiff