<commit_before>import { Rule, RuleOptions } from './Rule';
import { RawRuleFrom } from './RawRule';
import {
  Abilities,
  Normalize,
  SubjectType,
  AbilityParameters,
  AbilityTuple,
  ExtractSubjectType
} from './types';
import { wrapArray, detectSubjectType, mergePrioritized, getOrDefault, identity, isSubjectType } from './utils';
import { LinkedItem, linkedItem, unlinkItem } from './structures/LinkedItem';

export interface RuleIndexOptions<A extends Abilities, C> extends Partial<RuleOptions<A, C>> {
  detectSubjectType?(subject?: Exclude<Normalize<A>[1], SubjectType>): string
}

declare const $abilities: unique symbol;
declare const $conditions: unique symbol;
interface WithGenerics {
  [$abilities]: any
  [$conditions]: any
}
export type Public<T extends WithGenerics> = { [K in keyof T]: T[K] };
export type Generics<T extends WithGenerics> = {
  abilities: T[typeof $abilities],
  conditions: T[typeof $conditions]
};

export type RuleOf<T extends WithGenerics> =
  Rule<Generics<T>['abilities'], Generics<T>['conditions']>;
export type RawRuleOf<T extends WithGenerics> =
  RawRuleFrom<Generics<T>['abilities'], Generics<T>['conditions']>;

export type RuleIndexOptionsOf<T extends WithGenerics> =
  RuleIndexOptions<Generics<T>['abilities'], Generics<T>['conditions']>;

interface AbilityEvent<T extends WithGenerics> {
  target: T
  /** @deprecated use "target" property instead */
  ability: T
}

export interface UpdateEvent<T extends WithGenerics> extends AbilityEvent<T> {
  rules: RawRuleOf<T>[]
}
export type EventHandler<Event> = (event: Event) => void;

export type Events<
  T extends WithGenerics,
  K extends keyof EventsMap<T> = keyof EventsMap<T>
> = Map<K, LinkedItem<EventHandler<EventsMap<T>[K]>> | null>;

interface EventsMap<T extends WithGenerics> {
  update: UpdateEvent<T>
  updated: UpdateEvent<T>
}

type IndexTree<A extends Abilities, C> = Map<SubjectType, Map<string, {
  rules: Rule<A, C>[],
  merged: boolean
}>>;

export type Unsubscribe = () => void;

const defaultActionEntry = () => ({
  rules: [] as unknown as Rule<any, any>[],
  merged: false
});
const defaultSubjectEntry = () => new Map<string, ReturnType<typeof defaultActionEntry>>();
const analyze = (index: any, rule: Rule<any, any>) => {
  if (!index._hasPerFieldRules && rule.fields) {
    index._hasPerFieldRules = true;
  }
};

type AbilitySubjectTypeParameters<T extends Abilities, IncludeField extends boolean = true> =
  AbilityParameters<
  T,
  T extends AbilityTuple
    ? IncludeField extends true
      ? (action: T[0], subject: ExtractSubjectType<T[1]>, field?: string) => 0
      : (action: T[0], subject: ExtractSubjectType<T[1]>) => 0
    : never,
  (action: Extract<T, string>) => 0
  >;

export class RuleIndex<A extends Abilities, Conditions> {
  private _hasPerFieldRules: boolean = false;
  private _events: Events<this> = new Map();
  private _indexedRules!: IndexTree<A, Conditions>;
  private _rules!: RawRuleFrom<A, Conditions>[];
  private readonly _ruleOptions!: RuleOptions<A, Conditions>;
  private readonly _detectSubjectType!: Required<RuleIndexOptions<A, Conditions>>['detectSubjectType'];
  readonly [$abilities]!: A;
  readonly [$conditions]!: Conditions;

  constructor(
    rules: RawRuleFrom<A, Conditions>[] = [],
    options: RuleIndexOptions<A, Conditions> = {}
  ) {
    this._ruleOptions = {
      conditionsMatcher: options.conditionsMatcher,
      fieldMatcher: options.fieldMatcher,
      resolveAction: options.resolveAction || identity,
    };
    this._detectSubjectType = options.detectSubjectType || detectSubjectType;
    this._rules = rules;
    this._indexedRules = this._buildIndexFor(rules);
  }

  get rules() {
    return this._rules;
  }

  detectSubjectType(object?: Normalize<A>[1]) {
    return isSubjectType(object)
      ? object
      : this._detectSubjectType(object as Exclude<Normalize<A>[1], SubjectType>);
  }

  update(rules: RawRuleFrom<A, Conditions>[]): Public<this> {
    const event = {
      rules,
      ability: this,
      target: this
    } as unknown as UpdateEvent<this>;

    this._emit('update', event);
    this._rules = rules;
    this._indexedRules = this._buildIndexFor(rules);
    this._emit('updated', event);

    return this;
  }

  private _buildIndexFor(rawRules: RawRuleFrom<A, Conditions>[]) {
    const indexedRules: IndexTree<A, Conditions> = new Map();

    for (let i = rawRules.length - 1; i >= 0; i--) {<commit_msg>fix(types): adds return type annotation to `detectSubjectType` method<commit_after>import { Rule, RuleOptions } from './Rule';
import { RawRuleFrom } from './RawRule';
import {
  Abilities,
  Normalize,
  SubjectType,
  AbilityParameters,
  AbilityTuple,
  ExtractSubjectType
} from './types';
import { wrapArray, detectSubjectType, mergePrioritized, getOrDefault, identity, isSubjectType } from './utils';
import { LinkedItem, linkedItem, unlinkItem } from './structures/LinkedItem';

export interface RuleIndexOptions<A extends Abilities, C> extends Partial<RuleOptions<A, C>> {
  detectSubjectType?(subject?: Exclude<Normalize<A>[1], SubjectType>): string
}

declare const $abilities: unique symbol;
declare const $conditions: unique symbol;
interface WithGenerics {
  [$abilities]: any
  [$conditions]: any
}
export type Public<T extends WithGenerics> = { [K in keyof T]: T[K] };
export type Generics<T extends WithGenerics> = {
  abilities: T[typeof $abilities],
  conditions: T[typeof $conditions]
};

export type RuleOf<T extends WithGenerics> =
  Rule<Generics<T>['abilities'], Generics<T>['conditions']>;
export type RawRuleOf<T extends WithGenerics> =
  RawRuleFrom<Generics<T>['abilities'], Generics<T>['conditions']>;

export type RuleIndexOptionsOf<T extends WithGenerics> =
  RuleIndexOptions<Generics<T>['abilities'], Generics<T>['conditions']>;

interface AbilityEvent<T extends WithGenerics> {
  target: T
  /** @deprecated use "target" property instead */
  ability: T
}

export interface UpdateEvent<T extends WithGenerics> extends AbilityEvent<T> {
  rules: RawRuleOf<T>[]
}
export type EventHandler<Event> = (event: Event) => void;

export type Events<
  T extends WithGenerics,
  K extends keyof EventsMap<T> = keyof EventsMap<T>
> = Map<K, LinkedItem<EventHandler<EventsMap<T>[K]>> | null>;

interface EventsMap<T extends WithGenerics> {
  update: UpdateEvent<T>
  updated: UpdateEvent<T>
}

type IndexTree<A extends Abilities, C> = Map<SubjectType, Map<string, {
  rules: Rule<A, C>[],
  merged: boolean
}>>;

export type Unsubscribe = () => void;

const defaultActionEntry = () => ({
  rules: [] as unknown as Rule<any, any>[],
  merged: false
});
const defaultSubjectEntry = () => new Map<string, ReturnType<typeof defaultActionEntry>>();
const analyze = (index: any, rule: Rule<any, any>) => {
  if (!index._hasPerFieldRules && rule.fields) {
    index._hasPerFieldRules = true;
  }
};

type AbilitySubjectTypeParameters<T extends Abilities, IncludeField extends boolean = true> =
  AbilityParameters<
  T,
  T extends AbilityTuple
    ? IncludeField extends true
      ? (action: T[0], subject: ExtractSubjectType<T[1]>, field?: string) => 0
      : (action: T[0], subject: ExtractSubjectType<T[1]>) => 0
    : never,
  (action: Extract<T, string>) => 0
  >;

export class RuleIndex<A extends Abilities, Conditions> {
  private _hasPerFieldRules: boolean = false;
  private _events: Events<this> = new Map();
  private _indexedRules!: IndexTree<A, Conditions>;
  private _rules!: RawRuleFrom<A, Conditions>[];
  private readonly _ruleOptions!: RuleOptions<A, Conditions>;
  private readonly _detectSubjectType!: Required<RuleIndexOptions<A, Conditions>>['detectSubjectType'];
  readonly [$abilities]!: A;
  readonly [$conditions]!: Conditions;

  constructor(
    rules: RawRuleFrom<A, Conditions>[] = [],
    options: RuleIndexOptions<A, Conditions> = {}
  ) {
    this._ruleOptions = {
      conditionsMatcher: options.conditionsMatcher,
      fieldMatcher: options.fieldMatcher,
      resolveAction: options.resolveAction || identity,
    };
    this._detectSubjectType = options.detectSubjectType || detectSubjectType;
    this._rules = rules;
    this._indexedRules = this._buildIndexFor(rules);
  }

  get rules() {
    return this._rules;
  }

  detectSubjectType(object?: Normalize<A>[1]): ExtractSubjectType<Normalize<A>[1]> {
    return isSubjectType(object)
      ? object
      : this._detectSubjectType(object as Exclude<Normalize<A>[1], SubjectType>);
  }

  update(rules: RawRuleFrom<A, Conditions>[]): Public<this> {
    const event = {
      rules,
      ability: this,
      target: this
    } as unknown as UpdateEvent<this>;

    this._emit('update', event);
    this._rules = rules;
    this._indexedRules = this._buildIndexFor(rules);
    this._emit('updated', event);

    return this;
  }

  private _buildIndexFor(rawRules: RawRuleFrom<A, Conditions>[]) {
    const indexedRules: IndexTree<A, Conditions> = new Map();

    for (let i = rawRules.length - 1; i >= 0; i--) {
{'fraction_non_alphanumeric': 0.13400335008375208, 'fraction_numerical': 0.0027917364600781687, 'mean_word_length': 4.872786885245902, 'pattern_counts': {'":': 0, '<': 133, '<?xml version=': 0, '>': 151, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '352557', 'n_tokens_mistral': 2789, 'n_tokens_neox': 2705, 'n_words': 706}