import type { GlyphInfo } from "../../types.ts";
/**
 * Indic syllable categories based on Unicode and OpenType spec
 */
export declare enum IndicCategory {
    X = 0,// Other/Unknown
    C = 1,// Consonant
    V = 2,// Independent vowel
    N = 3,// Nukta
    H = 4,// Halant/Virama
    ZWNJ = 5,// Zero Width Non-Joiner
    ZWJ = 6,// Zero Width Joiner
    M = 7,// Matra (dependent vowel)
    SM = 8,// Syllable modifier (anusvara, visarga)
    A = 9,// Accent mark
    VD = 10,// Vedic mark
    Placeholder = 11,// Placeholder (dotted circle)
    Dotted_Circle = 12,// Explicit dotted circle
    RS = 13,// Repha form
    Coeng = 14,// Coeng (Khmer virama)
    Ra = 15,// Ra consonant (for repha)
    CM = 16,// Consonant modifier
    Symbol = 17,// Symbol
    CS = 18
}
/**
 * Indic syllabic position
 */
export declare enum IndicPosition {
    Start = 0,
    RaToBecomeReph = 1,
    PreM = 2,
    PreC = 3,
    BaseC = 4,
    AfterMain = 5,
    AboveC = 6,
    BeforeSub = 7,
    BelowC = 8,
    AfterSub = 9,
    BeforePost = 10,
    PostC = 11,
    AfterPost = 12,
    FinalC = 13,
    SMVD = 14,
    End = 15
}
/**
 * Per-glyph Indic shaping data
 */
export interface IndicGlyphData {
    category: IndicCategory;
    position: IndicPosition;
    syllableIndex: number;
}
/**
 * Check if a codepoint is an Indic script
 */
export declare function isIndic(cp: number): boolean;
/**
 * Get the Indic category for a codepoint
 */
export declare function getIndicCategory(cp: number): IndicCategory;
/**
 * Syllable structure for Indic scripts
 */
interface Syllable {
    start: number;
    end: number;
    hasReph: boolean;
    baseConsonant: number;
}
/**
 * Find syllable boundaries in the glyph buffer
 */
export declare function findSyllables(infos: GlyphInfo[]): Syllable[];
/**
 * Indic feature masks for OpenType features
 */
export declare const IndicFeatureMask: {
    readonly nukt: 1;
    readonly akhn: 2;
    readonly rphf: 4;
    readonly rkrf: 8;
    readonly pref: 16;
    readonly blwf: 32;
    readonly abvf: 64;
    readonly half: 128;
    readonly pstf: 256;
    readonly vatu: 512;
    readonly cjct: 1024;
    readonly init: 2048;
    readonly pres: 4096;
    readonly abvs: 8192;
    readonly blws: 16384;
    readonly psts: 32768;
};
/**
 * Matra position in syllable
 */
export declare enum MatraPosition {
    PreBase = 0,
    AboveBase = 1,
    BelowBase = 2,
    PostBase = 3
}
/**
 * Get matra position based on codepoint
 */
export declare function getMatraPosition(cp: number): MatraPosition;
/**
 * Set up masks and syllable indices for Indic shaping
 */
export declare function setupIndicMasks(infos: GlyphInfo[]): void;
/**
 * Reorder glyphs within a syllable for correct visual display
 * This handles:
 * - Moving pre-base matras before the base consonant
 * - Moving reph to its final position
 */
export declare function reorderIndic(infos: GlyphInfo[]): void;
export {};