// AUTOGENERATED FROM index-iso-8859-13.txt, ORIGINAL COMMENT FOLLOWS:
//
// For details on index index-iso-8859-13.txt see the Encoding Standard
// https://encoding.spec.whatwg.org/
//
// Identifier: 40736338e964ab520407cebcb01329f8d450abf6ce12bf88b74b655b60e43300
// Date: 2018-01-06

#[allow(dead_code)] const X: u16 = 0xffff;

const FORWARD_TABLE: &[u16] = &[
    128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146,
    147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 8221, 162, 163, 164,
    8222, 166, 167, 216, 169, 342, 171, 172, 173, 174, 198, 176, 177, 178, 179, 8220, 181, 182,
    183, 248, 185, 343, 187, 188, 189, 190, 230, 260, 302, 256, 262, 196, 197, 280, 274, 268, 201,
    377, 278, 290, 310, 298, 315, 352, 323, 325, 211, 332, 213, 214, 215, 370, 321, 346, 362, 220,
    379, 381, 223, 261, 303, 257, 263, 228, 229, 281, 275, 269, 233, 378, 279, 291, 311, 299, 316,
    353, 324, 326, 243, 333, 245, 246, 247, 371, 322, 347, 363, 252, 380, 382, 8217,
]; // 128 entries

/// Returns the index code point for pointer `code` in this index.
#[inline]
pub fn forward(code: u8) -> u16 {
    FORWARD_TABLE[(code - 0x80) as usize]
}

#[cfg(not(feature = "no-optimized-legacy-encoding"))]
const BACKWARD_TABLE_LOWER: &[u8] = &[
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146,
    147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 0, 162, 163, 164, 0, 166,
    167, 0, 169, 0, 171, 172, 173, 174, 0, 176, 177, 178, 179, 0, 181, 182, 183, 0, 185, 0, 187,
    188, 189, 190, 0, 194, 226, 0, 0, 192, 224, 195, 227, 0, 0, 0, 0, 200, 232, 0, 0, 0, 0, 199,
    231, 0, 0, 203, 235, 198, 230, 0, 0, 0, 0, 0, 0, 0, 0, 204, 236, 0, 0, 0, 0, 0, 0, 206, 238, 0,
    0, 193, 225, 0, 0, 0, 0, 0, 0, 205, 237, 0, 0, 0, 207, 239, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 0, 0, 180, 161, 165, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 196, 197, 175, 0, 0, 201,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 211, 0, 213, 214, 215, 168, 0, 0, 0, 220, 0, 0, 223, 0, 0, 0, 0,
    228, 229, 191, 0, 0, 233, 0, 0, 0, 0, 0, 0, 0, 0, 0, 243, 0, 245, 246, 247, 184, 0, 0, 0, 252,
    0, 0, 0, 217, 249, 209, 241, 210, 242, 0, 0, 0, 0, 0, 212, 244, 0, 0, 0, 0, 0, 0, 0, 0, 170,
    186, 0, 0, 218, 250, 0, 0, 0, 0, 208, 240, 0, 0, 0, 0, 0, 0, 0, 0, 219, 251, 0, 0, 0, 0, 0, 0,
    216, 248, 0, 0, 0, 0, 0, 202, 234, 221, 253, 222, 254, 0,
]; // 376 entries

#[cfg(not(feature = "no-optimized-legacy-encoding"))]
const BACKWARD_TABLE_UPPER: &[u16] = &[
    0, 0, 64, 249, 128, 312, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 189,
]; // 129 entries

/// Returns the index pointer for code point `code` in this index.
#[inline]
#[cfg(not(feature = "no-optimized-legacy-encoding"))]
pub fn backward(code: u32) -> u8 {
    let offset = (code >> 6) as usize;
    let offset = if offset < 129 {BACKWARD_TABLE_UPPER[offset] as usize} else {0};
    BACKWARD_TABLE_LOWER[offset + ((code & 63) as usize)]
}

/// Returns the index pointer for code point `code` in this index.
#[cfg(feature = "no-optimized-legacy-encoding")]
pub fn backward(code: u32) -> u8 {
    if code > 8222 || ((0x10001u32 >> (code >> 9)) & 1) == 0 { return 0; }
    let code = code as u16;
    for i in 0..0x80 {
        if FORWARD_TABLE[i as usize] == code { return 0x80 + i; }
    }
    0
}

#[cfg(test)]
encoding_index_tests::single_byte_tests! {
}