// AUTOGENERATED FROM index-iso-8859-16.txt, ORIGINAL COMMENT FOLLOWS:
//
// For details on index index-iso-8859-16.txt see the Encoding Standard
// https://encoding.spec.whatwg.org/
//
// Identifier: 55676320d2d1b6e6909f5b3d741a7cf0cefc84e920aa4474afc091459111c2e3
// 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, 260, 261, 321, 8364,
    8222, 352, 167, 353, 169, 536, 171, 377, 173, 378, 379, 176, 177, 268, 322, 381, 8221, 182,
    183, 382, 269, 537, 187, 338, 339, 376, 380, 192, 193, 194, 258, 196, 262, 198, 199, 200, 201,
    202, 203, 204, 205, 206, 207, 272, 323, 210, 211, 212, 336, 214, 346, 368, 217, 218, 219, 220,
    280, 538, 223, 224, 225, 226, 259, 228, 263, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
    273, 324, 242, 243, 244, 337, 246, 347, 369, 249, 250, 251, 252, 281, 539, 255,
]; // 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, 0, 0, 0, 0, 0, 167, 0,
    169, 0, 171, 0, 173, 0, 0, 176, 177, 0, 0, 0, 0, 182, 183, 0, 0, 0, 187, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 170, 186, 222, 254, 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, 181, 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, 195, 227, 161, 162, 197, 229, 0, 0, 0, 0, 178, 185, 0, 0, 208, 240, 0, 0, 0, 0, 0, 0, 221,
    253, 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, 164, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 163, 179, 209, 241, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 213, 245, 188, 189, 0, 0, 0, 0,
    0, 0, 215, 247, 0, 0, 0, 0, 166, 168, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 216, 248, 0, 0,
    0, 0, 0, 0, 190, 172, 174, 175, 191, 180, 184, 0, 192, 193, 194, 0, 196, 0, 198, 199, 200, 201,
    202, 203, 204, 205, 206, 207, 0, 0, 210, 211, 212, 0, 214, 0, 0, 217, 218, 219, 220, 0, 0, 223,
    224, 225, 226, 0, 228, 0, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 0, 0, 242, 243,
    244, 0, 246, 0, 0, 249, 250, 251, 252, 0, 0, 255,
]; // 438 entries

#[cfg(not(feature = "no-optimized-legacy-encoding"))]
const BACKWARD_TABLE_UPPER: &[u16] = &[
    0, 0, 64, 374, 221, 310, 0, 0, 124, 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, 159, 0, 247,
]; // 131 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 < 131 {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 > 8364 || ((0x10003u32 >> (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! {
}