import { SentenceBuilder } from './SentenceBuilder';
import { SeededRandom } from '../utils/random';
export interface GrammarRule {
    eventType: string;
    preferredPatterns: ('svo' | 'sv' | 'svc' | 'passive' | 'imperative')[];
    requiredComponents: {
        subject?: boolean;
        verb?: boolean;
        object?: boolean;
        complement?: boolean;
    };
    verbTense?: 'present' | 'past' | 'future';
    style?: 'formal' | 'casual' | 'dramatic' | 'neutral';
}
export interface EventTypeGrammarConfig {
    [eventType: string]: GrammarRule;
}
export declare class GrammarRulesEngine {
    private rules;
    private sentenceBuilder;
    private rng;
    constructor(sentenceBuilder: SentenceBuilder, rng?: SeededRandom);
    /**
     * Initialize default grammar rules for each event type
     */
    private initializeDefaultRules;
    /**
     * Get grammar rule for an event type
     */
    getRule(eventType: string): GrammarRule;
    /**
     * Validate a sentence structure against grammar rules
     */
    validateAgainstRules(sentence: string, eventType: string): boolean;
    /**
     * Suggest a sentence pattern based on event type
     */
    suggestPattern(eventType: string): 'svo' | 'sv' | 'svc' | 'passive' | 'imperative';
    /**
     * Get style-appropriate modifiers
     */
    getStyleModifiers(eventType: string): {
        adjectives?: string[];
        adverbs?: string[];
    };
    /**
     * Add custom grammar rule
     */
    addRule(eventType: string, rule: GrammarRule): void;
    /**
     * Get all rules
     */
    getAllRules(): EventTypeGrammarConfig;
}
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