#![no_main]

use std::error::Error;

use libfuzzer_sys::fuzz_target;

use skrifa::{

    charmap::{Charmap, MappingIndex},

    MetadataProvider,

};

mod helpers;

use helpers::*;

const CJK_VARIATION_1: u32 = 0xFE00;

const CJK_VARIATION_2: u32 = 0xFE01;

fn do_charmap_things(charmap: Charmap<'_>) {

    let _ = charmap.has_map();

    let _ = charmap.is_symbol();

    let _ = charmap.has_variant_map();

    for (cp, _) in charmap.mappings() {

        let _ = charmap.map(cp);

        let _ = charmap.map_variant(cp, CJK_VARIATION_1);

        let _ = charmap.map_variant(cp, CJK_VARIATION_2);

    }

    let _ = charmap.variant_mappings().count();

}

fn do_skrifa_things(data: &[u8]) -> Result<(), Box<dyn Error>> {

    let font = select_font(data)?;

    // we don't care about the result, just that we don't panic, hang, etc

    do_charmap_things(font.charmap());

    do_charmap_things(MappingIndex::new(&font).charmap(&font));

    Ok(())

}

fuzz_target!(|data: &[u8]| {

    let _ = do_skrifa_things(data);

});