import type { GlyphInfo } from "../../types.ts";
/**
 * Ethiopic shaper
 * Handles Ethiopic/Ge'ez script
 *
 * Ethiopic is an abugida (alphasyllabary) where:
 * - Base consonants have inherent vowel 'a'
 * - Vowels modify the base consonant shape
 * - No joining behavior (unlike Arabic)
 * - Left-to-right direction
 *
 * Key features:
 * - Syllable-based writing (CV or CVC)
 * - Labialization marks (W modifier)
 * - Extended character sets for various languages
 */
/**
 * Ethiopic character categories
 */
export declare enum EthiopicCategory {
    Other = 0,
    Syllable = 1,// Main syllabic characters (consonant + vowel)
    Digit = 2,// Ethiopic digits
    Punctuation = 3,// Ethiopic punctuation
    Modifier = 4,// Combining marks
    ToneMark = 5
}
/**
 * Get Ethiopic category for codepoint
 */
export declare function getEthiopicCategory(cp: number): EthiopicCategory;
/**
 * Check if codepoint is an Ethiopic syllable
 */
export declare function isEthiopicSyllable(cp: number): boolean;
/**
 * Get the vowel form of an Ethiopic syllable (0-7)
 * 0 = First form (inherent ä or a)
 * 1 = Second form (u)
 * 2 = Third form (i)
 * 3 = Fourth form (a)
 * 4 = Fifth form (e)
 * 5 = Sixth form (ə or no vowel)
 * 6 = Seventh form (o)
 * 7 = Eighth form (wa) - labialized
 */
export declare function getEthiopicVowelForm(cp: number): number;
/**
 * Ethiopic feature masks
 */
export declare const EthiopicFeatureMask: {
    readonly ccmp: 1;
    readonly locl: 2;
    readonly calt: 4;
    readonly liga: 8;
    readonly ss01: 16;
    readonly ss02: 32;
};
/**
 * Set up masks for Ethiopic shaping
 */
export declare function setupEthiopicMasks(infos: GlyphInfo[]): void;
/**
 * Get default Ethiopic features in order
 */
export declare function getEthiopicFeatures(): string[];
/**
 * Check if script uses Ethiopic shaper
 */
export declare function usesEthiopic(script: string): boolean;