Moving symbols around
This commit is contained in:
Henning Dieterichs
Родитель
449bfc4fd3
Коммит
d574ab9781
604
src/rule.ts
604
src/rule.ts
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@ -40,25 +40,6 @@ export interface IGrammarRegistry {
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export interface IRuleFactoryHelper extends IRuleRegistry, IGrammarRegistry {
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}
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export class CompiledRule<TRuleId = RuleId | typeof endRuleId> {
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public readonly debugRegExps: string[];
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public readonly rules: TRuleId[];
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public readonly scanner: OnigScanner;
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constructor(onigLib: IOnigLib, regExps: string[], rules: TRuleId[]) {
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this.debugRegExps = regExps;
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this.rules = rules;
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this.scanner = onigLib.createOnigScanner(regExps);
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}
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public dispose(): void {
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if (typeof this.scanner.dispose === 'function') {
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this.scanner.dispose();
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}
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}
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}
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export abstract class Rule {
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public readonly $location: ILocation | undefined;
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@ -138,289 +119,6 @@ export class CaptureRule extends Rule {
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}
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}
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interface IRegExpSourceAnchorCache {
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readonly A0_G0: string;
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readonly A0_G1: string;
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readonly A1_G0: string;
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readonly A1_G1: string;
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}
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export class RegExpSource<TRuleId = RuleId | typeof endRuleId> {
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public source: string;
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public readonly ruleId: TRuleId;
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public hasAnchor: boolean;
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public readonly hasBackReferences: boolean;
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private _anchorCache: IRegExpSourceAnchorCache | null;
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constructor(regExpSource: string, ruleId: TRuleId) {
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if (regExpSource) {
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const len = regExpSource.length;
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let lastPushedPos = 0;
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let output: string[] = [];
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let hasAnchor = false;
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for (let pos = 0; pos < len; pos++) {
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const ch = regExpSource.charAt(pos);
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if (ch === '\\') {
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if (pos + 1 < len) {
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const nextCh = regExpSource.charAt(pos + 1);
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if (nextCh === 'z') {
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output.push(regExpSource.substring(lastPushedPos, pos));
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output.push('$(?!\\n)(?<!\\n)');
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lastPushedPos = pos + 2;
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} else if (nextCh === 'A' || nextCh === 'G') {
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hasAnchor = true;
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}
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pos++;
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}
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}
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}
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this.hasAnchor = hasAnchor;
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if (lastPushedPos === 0) {
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// No \z hit
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this.source = regExpSource;
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} else {
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output.push(regExpSource.substring(lastPushedPos, len));
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this.source = output.join('');
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}
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} else {
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this.hasAnchor = false;
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this.source = regExpSource;
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}
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if (this.hasAnchor) {
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this._anchorCache = this._buildAnchorCache();
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} else {
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this._anchorCache = null;
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}
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this.ruleId = ruleId;
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this.hasBackReferences = HAS_BACK_REFERENCES.test(this.source);
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// console.log('input: ' + regExpSource + ' => ' + this.source + ', ' + this.hasAnchor);
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}
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public clone(): RegExpSource<TRuleId> {
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return new RegExpSource(this.source, this.ruleId);
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}
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public setSource(newSource: string): void {
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if (this.source === newSource) {
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return;
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}
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this.source = newSource;
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if (this.hasAnchor) {
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this._anchorCache = this._buildAnchorCache();
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}
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}
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public resolveBackReferences(lineText: string, captureIndices: IOnigCaptureIndex[]): string {
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let capturedValues = captureIndices.map((capture) => {
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return lineText.substring(capture.start, capture.end);
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});
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BACK_REFERENCING_END.lastIndex = 0;
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return this.source.replace(BACK_REFERENCING_END, (match, g1) => {
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return escapeRegExpCharacters(capturedValues[parseInt(g1, 10)] || '');
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});
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}
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private _buildAnchorCache(): IRegExpSourceAnchorCache {
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let A0_G0_result: string[] = [];
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let A0_G1_result: string[] = [];
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let A1_G0_result: string[] = [];
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let A1_G1_result: string[] = [];
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let pos: number,
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len: number,
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ch: string,
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nextCh: string;
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for (pos = 0, len = this.source.length; pos < len; pos++) {
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ch = this.source.charAt(pos);
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A0_G0_result[pos] = ch;
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A0_G1_result[pos] = ch;
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A1_G0_result[pos] = ch;
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A1_G1_result[pos] = ch;
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if (ch === '\\') {
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if (pos + 1 < len) {
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nextCh = this.source.charAt(pos + 1);
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if (nextCh === 'A') {
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A0_G0_result[pos + 1] = '\uFFFF';
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A0_G1_result[pos + 1] = '\uFFFF';
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A1_G0_result[pos + 1] = 'A';
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A1_G1_result[pos + 1] = 'A';
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} else if (nextCh === 'G') {
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A0_G0_result[pos + 1] = '\uFFFF';
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A0_G1_result[pos + 1] = 'G';
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A1_G0_result[pos + 1] = '\uFFFF';
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A1_G1_result[pos + 1] = 'G';
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} else {
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A0_G0_result[pos + 1] = nextCh;
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A0_G1_result[pos + 1] = nextCh;
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A1_G0_result[pos + 1] = nextCh;
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A1_G1_result[pos + 1] = nextCh;
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}
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pos++;
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}
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}
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}
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return {
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A0_G0: A0_G0_result.join(''),
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A0_G1: A0_G1_result.join(''),
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A1_G0: A1_G0_result.join(''),
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A1_G1: A1_G1_result.join('')
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};
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}
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public resolveAnchors(allowA: boolean, allowG: boolean): string {
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if (!this.hasAnchor || !this._anchorCache) {
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return this.source;
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}
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if (allowA) {
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if (allowG) {
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return this._anchorCache.A1_G1;
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} else {
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return this._anchorCache.A1_G0;
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}
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} else {
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if (allowG) {
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return this._anchorCache.A0_G1;
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} else {
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return this._anchorCache.A0_G0;
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}
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}
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}
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}
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interface IRegExpSourceListAnchorCache<TRuleId> {
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A0_G0: CompiledRule<TRuleId> | null;
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A0_G1: CompiledRule<TRuleId> | null;
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A1_G0: CompiledRule<TRuleId> | null;
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A1_G1: CompiledRule<TRuleId> | null;
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}
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export class RegExpSourceList<TRuleId = RuleId | typeof endRuleId> {
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private readonly _items: RegExpSource<TRuleId>[];
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private _hasAnchors: boolean;
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private _cached: CompiledRule<TRuleId> | null;
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private _anchorCache: IRegExpSourceListAnchorCache<TRuleId>;
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constructor() {
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this._items = [];
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this._hasAnchors = false;
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this._cached = null;
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this._anchorCache = {
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A0_G0: null,
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A0_G1: null,
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A1_G0: null,
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A1_G1: null
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};
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}
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public dispose(): void {
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this._disposeCaches();
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}
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private _disposeCaches(): void {
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if (this._cached) {
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this._cached.dispose();
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this._cached = null;
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}
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if (this._anchorCache.A0_G0) {
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this._anchorCache.A0_G0.dispose();
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this._anchorCache.A0_G0 = null;
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}
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if (this._anchorCache.A0_G1) {
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this._anchorCache.A0_G1.dispose();
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this._anchorCache.A0_G1 = null;
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}
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if (this._anchorCache.A1_G0) {
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this._anchorCache.A1_G0.dispose();
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this._anchorCache.A1_G0 = null;
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}
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if (this._anchorCache.A1_G1) {
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this._anchorCache.A1_G1.dispose();
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this._anchorCache.A1_G1 = null;
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}
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}
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public push(item: RegExpSource<TRuleId>): void {
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this._items.push(item);
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this._hasAnchors = this._hasAnchors || item.hasAnchor;
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}
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public unshift(item: RegExpSource<TRuleId>): void {
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this._items.unshift(item);
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this._hasAnchors = this._hasAnchors || item.hasAnchor;
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}
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public length(): number {
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return this._items.length;
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}
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public setSource(index: number, newSource: string): void {
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if (this._items[index].source !== newSource) {
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// bust the cache
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this._disposeCaches();
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this._items[index].setSource(newSource);
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}
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}
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public compile(onigLib: IOnigLib): CompiledRule<TRuleId> {
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if (!this._cached) {
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let regExps = this._items.map(e => e.source);
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this._cached = new CompiledRule<TRuleId>(onigLib, regExps, this._items.map(e => e.ruleId));
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}
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return this._cached;
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}
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public compileAG(onigLib: IOnigLib, allowA: boolean, allowG: boolean): CompiledRule<TRuleId> {
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if (!this._hasAnchors) {
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return this.compile(onigLib);
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} else {
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if (allowA) {
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if (allowG) {
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if (!this._anchorCache.A1_G1) {
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this._anchorCache.A1_G1 = this._resolveAnchors(onigLib, allowA, allowG);
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}
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return this._anchorCache.A1_G1;
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} else {
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if (!this._anchorCache.A1_G0) {
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this._anchorCache.A1_G0 = this._resolveAnchors(onigLib, allowA, allowG);
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}
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return this._anchorCache.A1_G0;
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}
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} else {
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if (allowG) {
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if (!this._anchorCache.A0_G1) {
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this._anchorCache.A0_G1 = this._resolveAnchors(onigLib, allowA, allowG);
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}
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return this._anchorCache.A0_G1;
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} else {
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if (!this._anchorCache.A0_G0) {
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this._anchorCache.A0_G0 = this._resolveAnchors(onigLib, allowA, allowG);
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}
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return this._anchorCache.A0_G0;
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}
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}
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}
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}
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private _resolveAnchors(onigLib: IOnigLib, allowA: boolean, allowG: boolean): CompiledRule<TRuleId> {
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let regExps = this._items.map(e => e.resolveAnchors(allowA, allowG));
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return new CompiledRule(onigLib, regExps, this._items.map(e => e.ruleId));
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}
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}
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export class MatchRule extends Rule {
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private readonly _match: RegExpSource;
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public readonly captures: (CaptureRule | null)[];
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@ -873,3 +571,305 @@ export class RuleFactory {
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};
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}
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}
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interface IRegExpSourceAnchorCache {
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readonly A0_G0: string;
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readonly A0_G1: string;
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readonly A1_G0: string;
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readonly A1_G1: string;
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}
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export class RegExpSource<TRuleId = RuleId | typeof endRuleId> {
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public source: string;
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public readonly ruleId: TRuleId;
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public hasAnchor: boolean;
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public readonly hasBackReferences: boolean;
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private _anchorCache: IRegExpSourceAnchorCache | null;
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constructor(regExpSource: string, ruleId: TRuleId) {
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if (regExpSource) {
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const len = regExpSource.length;
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let lastPushedPos = 0;
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let output: string[] = [];
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let hasAnchor = false;
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for (let pos = 0; pos < len; pos++) {
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const ch = regExpSource.charAt(pos);
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if (ch === '\\') {
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if (pos + 1 < len) {
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const nextCh = regExpSource.charAt(pos + 1);
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if (nextCh === 'z') {
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output.push(regExpSource.substring(lastPushedPos, pos));
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output.push('$(?!\\n)(?<!\\n)');
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lastPushedPos = pos + 2;
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} else if (nextCh === 'A' || nextCh === 'G') {
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hasAnchor = true;
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}
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pos++;
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}
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}
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}
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this.hasAnchor = hasAnchor;
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if (lastPushedPos === 0) {
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// No \z hit
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this.source = regExpSource;
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} else {
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output.push(regExpSource.substring(lastPushedPos, len));
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this.source = output.join('');
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}
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} else {
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this.hasAnchor = false;
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this.source = regExpSource;
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}
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if (this.hasAnchor) {
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this._anchorCache = this._buildAnchorCache();
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} else {
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this._anchorCache = null;
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}
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this.ruleId = ruleId;
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this.hasBackReferences = HAS_BACK_REFERENCES.test(this.source);
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// console.log('input: ' + regExpSource + ' => ' + this.source + ', ' + this.hasAnchor);
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}
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public clone(): RegExpSource<TRuleId> {
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return new RegExpSource(this.source, this.ruleId);
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}
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public setSource(newSource: string): void {
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if (this.source === newSource) {
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return;
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}
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this.source = newSource;
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if (this.hasAnchor) {
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this._anchorCache = this._buildAnchorCache();
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}
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}
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public resolveBackReferences(lineText: string, captureIndices: IOnigCaptureIndex[]): string {
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let capturedValues = captureIndices.map((capture) => {
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return lineText.substring(capture.start, capture.end);
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});
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BACK_REFERENCING_END.lastIndex = 0;
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return this.source.replace(BACK_REFERENCING_END, (match, g1) => {
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return escapeRegExpCharacters(capturedValues[parseInt(g1, 10)] || '');
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});
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}
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private _buildAnchorCache(): IRegExpSourceAnchorCache {
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let A0_G0_result: string[] = [];
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let A0_G1_result: string[] = [];
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let A1_G0_result: string[] = [];
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let A1_G1_result: string[] = [];
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let pos: number,
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len: number,
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ch: string,
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nextCh: string;
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for (pos = 0, len = this.source.length; pos < len; pos++) {
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ch = this.source.charAt(pos);
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A0_G0_result[pos] = ch;
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||||
A0_G1_result[pos] = ch;
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A1_G0_result[pos] = ch;
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A1_G1_result[pos] = ch;
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if (ch === '\\') {
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if (pos + 1 < len) {
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nextCh = this.source.charAt(pos + 1);
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if (nextCh === 'A') {
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A0_G0_result[pos + 1] = '\uFFFF';
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A0_G1_result[pos + 1] = '\uFFFF';
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A1_G0_result[pos + 1] = 'A';
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A1_G1_result[pos + 1] = 'A';
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} else if (nextCh === 'G') {
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A0_G0_result[pos + 1] = '\uFFFF';
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A0_G1_result[pos + 1] = 'G';
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A1_G0_result[pos + 1] = '\uFFFF';
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A1_G1_result[pos + 1] = 'G';
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} else {
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A0_G0_result[pos + 1] = nextCh;
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A0_G1_result[pos + 1] = nextCh;
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A1_G0_result[pos + 1] = nextCh;
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A1_G1_result[pos + 1] = nextCh;
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}
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pos++;
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}
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}
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}
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return {
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A0_G0: A0_G0_result.join(''),
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A0_G1: A0_G1_result.join(''),
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A1_G0: A1_G0_result.join(''),
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A1_G1: A1_G1_result.join('')
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};
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}
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public resolveAnchors(allowA: boolean, allowG: boolean): string {
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||||
if (!this.hasAnchor || !this._anchorCache) {
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return this.source;
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||||
}
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||||
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||||
if (allowA) {
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||||
if (allowG) {
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||||
return this._anchorCache.A1_G1;
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||||
} else {
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||||
return this._anchorCache.A1_G0;
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||||
}
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||||
} else {
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||||
if (allowG) {
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||||
return this._anchorCache.A0_G1;
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||||
} else {
|
||||
return this._anchorCache.A0_G0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
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interface IRegExpSourceListAnchorCache<TRuleId> {
|
||||
A0_G0: CompiledRule<TRuleId> | null;
|
||||
A0_G1: CompiledRule<TRuleId> | null;
|
||||
A1_G0: CompiledRule<TRuleId> | null;
|
||||
A1_G1: CompiledRule<TRuleId> | null;
|
||||
}
|
||||
|
||||
export class RegExpSourceList<TRuleId = RuleId | typeof endRuleId> {
|
||||
|
||||
private readonly _items: RegExpSource<TRuleId>[];
|
||||
private _hasAnchors: boolean;
|
||||
private _cached: CompiledRule<TRuleId> | null;
|
||||
private _anchorCache: IRegExpSourceListAnchorCache<TRuleId>;
|
||||
|
||||
constructor() {
|
||||
this._items = [];
|
||||
this._hasAnchors = false;
|
||||
this._cached = null;
|
||||
this._anchorCache = {
|
||||
A0_G0: null,
|
||||
A0_G1: null,
|
||||
A1_G0: null,
|
||||
A1_G1: null
|
||||
};
|
||||
}
|
||||
|
||||
public dispose(): void {
|
||||
this._disposeCaches();
|
||||
}
|
||||
|
||||
private _disposeCaches(): void {
|
||||
if (this._cached) {
|
||||
this._cached.dispose();
|
||||
this._cached = null;
|
||||
}
|
||||
if (this._anchorCache.A0_G0) {
|
||||
this._anchorCache.A0_G0.dispose();
|
||||
this._anchorCache.A0_G0 = null;
|
||||
}
|
||||
if (this._anchorCache.A0_G1) {
|
||||
this._anchorCache.A0_G1.dispose();
|
||||
this._anchorCache.A0_G1 = null;
|
||||
}
|
||||
if (this._anchorCache.A1_G0) {
|
||||
this._anchorCache.A1_G0.dispose();
|
||||
this._anchorCache.A1_G0 = null;
|
||||
}
|
||||
if (this._anchorCache.A1_G1) {
|
||||
this._anchorCache.A1_G1.dispose();
|
||||
this._anchorCache.A1_G1 = null;
|
||||
}
|
||||
}
|
||||
|
||||
public push(item: RegExpSource<TRuleId>): void {
|
||||
this._items.push(item);
|
||||
this._hasAnchors = this._hasAnchors || item.hasAnchor;
|
||||
}
|
||||
|
||||
public unshift(item: RegExpSource<TRuleId>): void {
|
||||
this._items.unshift(item);
|
||||
this._hasAnchors = this._hasAnchors || item.hasAnchor;
|
||||
}
|
||||
|
||||
public length(): number {
|
||||
return this._items.length;
|
||||
}
|
||||
|
||||
public setSource(index: number, newSource: string): void {
|
||||
if (this._items[index].source !== newSource) {
|
||||
// bust the cache
|
||||
this._disposeCaches();
|
||||
this._items[index].setSource(newSource);
|
||||
}
|
||||
}
|
||||
|
||||
public compile(onigLib: IOnigLib): CompiledRule<TRuleId> {
|
||||
if (!this._cached) {
|
||||
let regExps = this._items.map(e => e.source);
|
||||
this._cached = new CompiledRule<TRuleId>(onigLib, regExps, this._items.map(e => e.ruleId));
|
||||
}
|
||||
return this._cached;
|
||||
}
|
||||
|
||||
public compileAG(onigLib: IOnigLib, allowA: boolean, allowG: boolean): CompiledRule<TRuleId> {
|
||||
if (!this._hasAnchors) {
|
||||
return this.compile(onigLib);
|
||||
} else {
|
||||
if (allowA) {
|
||||
if (allowG) {
|
||||
if (!this._anchorCache.A1_G1) {
|
||||
this._anchorCache.A1_G1 = this._resolveAnchors(onigLib, allowA, allowG);
|
||||
}
|
||||
return this._anchorCache.A1_G1;
|
||||
} else {
|
||||
if (!this._anchorCache.A1_G0) {
|
||||
this._anchorCache.A1_G0 = this._resolveAnchors(onigLib, allowA, allowG);
|
||||
}
|
||||
return this._anchorCache.A1_G0;
|
||||
}
|
||||
} else {
|
||||
if (allowG) {
|
||||
if (!this._anchorCache.A0_G1) {
|
||||
this._anchorCache.A0_G1 = this._resolveAnchors(onigLib, allowA, allowG);
|
||||
}
|
||||
return this._anchorCache.A0_G1;
|
||||
} else {
|
||||
if (!this._anchorCache.A0_G0) {
|
||||
this._anchorCache.A0_G0 = this._resolveAnchors(onigLib, allowA, allowG);
|
||||
}
|
||||
return this._anchorCache.A0_G0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private _resolveAnchors(onigLib: IOnigLib, allowA: boolean, allowG: boolean): CompiledRule<TRuleId> {
|
||||
let regExps = this._items.map(e => e.resolveAnchors(allowA, allowG));
|
||||
return new CompiledRule(onigLib, regExps, this._items.map(e => e.ruleId));
|
||||
}
|
||||
}
|
||||
|
||||
export class CompiledRule<TRuleId = RuleId | typeof endRuleId> {
|
||||
|
||||
public readonly debugRegExps: string[];
|
||||
public readonly rules: TRuleId[];
|
||||
public readonly scanner: OnigScanner;
|
||||
|
||||
constructor(onigLib: IOnigLib, regExps: string[], rules: TRuleId[]) {
|
||||
this.debugRegExps = regExps;
|
||||
this.rules = rules;
|
||||
this.scanner = onigLib.createOnigScanner(regExps);
|
||||
}
|
||||
|
||||
public dispose(): void {
|
||||
if (typeof this.scanner.dispose === 'function') {
|
||||
this.scanner.dispose();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
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