| // Copyright 2020 The Wuffs Authors. | |
| // | |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
| // https://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
| // <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your | |
| // option. This file may not be copied, modified, or distributed | |
| // except according to those terms. | |
| // | |
| // SPDX-License-Identifier: Apache-2.0 OR MIT | |
| pub status "#bad C0 control code" | |
| pub status "#bad UTF-8" | |
| pub status "#bad backslash-escape" | |
| pub status "#bad input" | |
| pub status "#bad new-line in a string" | |
| pub status "#bad quirk combination" | |
| pub status "#unsupported number length" | |
| pub status "#unsupported recursion depth" | |
| pri status "#internal error: inconsistent I/O" | |
| // -------- | |
| // DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE is the largest workbuf length that a | |
| // decoder will request. | |
| pub const DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE : base.u64 = 0 | |
| // DECODER_DEPTH_MAX_INCL is the maximum supported recursion depth: how deeply | |
| // nested [] arrays and {} objects can be. | |
| // | |
| // The JSON spec itself does not define a limit, but allows implementations to | |
| // set their own limits. | |
| pub const DECODER_DEPTH_MAX_INCL : base.u64 = 1024 | |
| // DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL is the minimum length of the dst | |
| // wuffs_base__token_buffer passed to the decoder. | |
| pub const DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL : base.u64 = 1 | |
| // DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL is the minimum length of the src | |
| // wuffs_base__io_buffer passed to the decoder. | |
| // | |
| // This constrains the src.data.len field and it is the io_buffer capacity (the | |
| // maximum possible src.meta.ri and src.meta.wi values). It is a property of | |
| // the backing array's length, not the length of the JSON-formatted input per | |
| // se. It is perfectly valid to decode "[1,2]" (of length 5) as JSON, as long | |
| // as that content is placed in an io_buffer whose data.len is at least 100. | |
| pub const DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL : base.u64 = 100 | |
| // DECODER_NUMBER_LENGTH_MAX_INCL is the longest supported byte length for a | |
| // JSON number. Unlike JSON strings, this package's tokenizer never splits a | |
| // single JSON number into multiple tokens, as this simplifies the callers. | |
| // They can then call e.g. wuffs_base__parse_number_i64 without having to | |
| // reconstitute a contiguous string representation. | |
| // | |
| // The JSON spec itself does not define a limit, but allows implementations to | |
| // set their own limits. | |
| pri const DECODER_NUMBER_LENGTH_MAX_INCL : base.u64 = 99 | |
| // -------- | |
| // Look-Up Tables (LUTs). | |
| // LUT_BACKSLASHES[i] helps decode "\i", for various 'i's. | |
| // | |
| // If the element's 0x80 bit is set then "\i" is unconditionally a valid | |
| // single-output-byte backslash-escape. The low 7 bits are the unescaped value. | |
| // For example, LUT_BACKSLASHES['n'] is (0x80 | 0x0A), because "\n" is U+000A. | |
| // | |
| // If the element is non-zero (but the 0x80 bit is not set) then "\i"'s | |
| // validity depends on the relevant quirk. The element's value is an enum: | |
| // - 1: "\a", U+0007, QUIRK_ALLOW_BACKSLASH_A. | |
| // - 2: "\e", U+001B, QUIRK_ALLOW_BACKSLASH_E. | |
| // - 3: "backslash new_line(not_n)", U+000A, QUIRK_ALLOW_BACKSLASH_NEW_LINE. | |
| // - 4: "\?", U+003F, QUIRK_ALLOW_BACKSLASH_QUESTION_MARK. | |
| // - 5: "\'", U+0027, QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE. | |
| // - 6: "\v", U+000B, QUIRK_ALLOW_BACKSLASH_V. | |
| // - 7: "\0", U+0000, QUIRK_ALLOW_BACKSLASH_ZERO. | |
| // The quirk and U+1234 values are held in LUT_QUIRKY_BACKSLASHES_QUIRKS and | |
| // LUT_QUIRKY_BACKSLASHES_CHARS, below. | |
| // | |
| // If the element is zero then "\i" is invalid, or it is a special case, the | |
| // start of "\x12", "\u1234" or "\U12345678". | |
| pri const LUT_BACKSLASHES : roarray[256] base.u8 = [ | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. | |
| 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. '\n'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. | |
| 0x00, 0x00, 0xA2, 0x00, 0x00, 0x00, 0x00, 0x05, // 0x20 ..= 0x27. '"', '\''. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xAF, // 0x28 ..= 0x2F. '/'. | |
| 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x30 ..= 0x37. '0'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, // 0x38 ..= 0x3F. '?' | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. | |
| 0x00, 0x00, 0x00, 0x00, 0xDC, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. '\\'. | |
| 0x00, 0x01, 0x88, 0x00, 0x00, 0x02, 0x8C, 0x00, // 0x60 ..= 0x67. 'a', 'b', 'e', 'f'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8A, 0x00, // 0x68 ..= 0x6F. 'n'. | |
| 0x00, 0x00, 0x8D, 0x00, 0x89, 0x00, 0x06, 0x00, // 0x70 ..= 0x77. 'r', 't', 'v'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF. | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| ] | |
| // LUT_QUIRKY_BACKSLASHES_QUIRKS is discussed in the LUT_BACKSLASHES comment. | |
| // The first element (index 0) is not used, but 8 is a round power of 2, so | |
| // enforcing index-in-bounds is a simple "&7" operation. | |
| pri const LUT_QUIRKY_BACKSLASHES_QUIRKS : roarray[8] base.u8[..= 0x0A] = [ | |
| 0, | |
| // Uncommenting the following lines requires being able to define consts in | |
| // terms of other consts, which could be non-trivial to specify and | |
| // implement (to avoid infinite loops). | |
| 0x01, // (QUIRK_ALLOW_BACKSLASH_A - QUIRKS_BASE) as base.u8, | |
| 0x03, // (QUIRK_ALLOW_BACKSLASH_E - QUIRKS_BASE) as base.u8, | |
| 0x04, // (QUIRK_ALLOW_BACKSLASH_NEW_LINE - QUIRKS_BASE) as base.u8, | |
| 0x05, // (QUIRK_ALLOW_BACKSLASH_QUESTION_MARK - QUIRKS_BASE) as base.u8, | |
| 0x06, // (QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE - QUIRKS_BASE) as base.u8, | |
| 0x07, // (QUIRK_ALLOW_BACKSLASH_V - QUIRKS_BASE) as base.u8, | |
| 0x0A, // (QUIRK_ALLOW_BACKSLASH_ZERO - QUIRKS_BASE) as base.u8, | |
| ] | |
| // LUT_QUIRKY_BACKSLASHES_CHARS is discussed in the LUT_BACKSLASHES comment. | |
| // The first element (index 0) is not used, but 8 is a round power of 2, so | |
| // enforcing index-in-bounds is a simple "&7" operation. | |
| pri const LUT_QUIRKY_BACKSLASHES_CHARS : roarray[8] base.u8 = [ | |
| 0x00, 0x07, 0x1B, 0x0A, 0x3F, 0x27, 0x0B, 0x00, | |
| ] | |
| // LUT_CHARS helps decode bytes within a string: | |
| // - 0x00 is 1-byte UTF-8 (ASCII) but not '"', '\\' or a C0 control code. | |
| // - 0x01 is '"'. | |
| // - 0x02 is '\\'. | |
| // - 0x03 is the start of 2-byte UTF-8. | |
| // - 0x04 is the start of 3-byte UTF-8. | |
| // - 0x05 is the start of 4-byte UTF-8. | |
| // - 0x10 is a UTF-8 tail byte. | |
| // - 0x20 is invalid UTF-8. | |
| // - 0x80 and above is invalid JSON (C0 control codes). | |
| // | |
| // RFC 3629 (UTF-8) gives this grammar for valid UTF-8: | |
| // UTF8-1 = %x00-7F | |
| // UTF8-2 = %xC2-DF UTF8-tail | |
| // UTF8-3 = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) / | |
| // %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail ) | |
| // UTF8-4 = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) / | |
| // %xF4 %x80-8F 2( UTF8-tail ) | |
| // UTF8-tail = %x80-BF | |
| pri const LUT_CHARS : roarray[256] base.u8 = [ | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x00 ..= 0x07. C0 control codes. | |
| 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, // 0x08 ..= 0x0F. C0 control codes. | |
| 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, // 0x10 ..= 0x17. C0 control codes. | |
| 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, // 0x18 ..= 0x1F. C0 control codes. | |
| 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. UTF-8-1; '"'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x30 ..= 0x37. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. UTF-8-1; '\\'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. UTF-8-1. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. UTF-8-1. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0x80 ..= 0x87. UTF-8 tail. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0x88 ..= 0x8F. UTF-8 tail. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0x90 ..= 0x97. UTF-8 tail. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0x98 ..= 0x9F. UTF-8 tail. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0xA0 ..= 0xA7. UTF-8 tail. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0xA8 ..= 0xAF. UTF-8 tail. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0xB0 ..= 0xB7. UTF-8 tail. | |
| 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, // 0xB8 ..= 0xBF. UTF-8 tail. | |
| 0x20, 0x20, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, // 0xC0 ..= 0xC7. Invalid UTF-8; UTF-8-2. | |
| 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, // 0xC8 ..= 0xCF. UTF-8-2. | |
| 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, // 0xD0 ..= 0xD7. UTF-8-2. | |
| 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, // 0xD8 ..= 0xDF. UTF-8-2. | |
| 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, // 0xE0 ..= 0xE7. UTF-8-3. | |
| 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, // 0xE8 ..= 0xEF. UTF-8-3. | |
| 0x05, 0x05, 0x05, 0x05, 0x05, 0x20, 0x20, 0x20, // 0xF0 ..= 0xF7. UTF-8-4; Invalid UTF-8. | |
| 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, // 0xF8 ..= 0xFF. Invalid UTF-8. | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| ] | |
| pri const CLASS_WHITESPACE : base.u8 = 0x00 | |
| pri const CLASS_STRING : base.u8 = 0x01 | |
| pri const CLASS_COMMA : base.u8 = 0x02 | |
| pri const CLASS_COLON : base.u8 = 0x03 | |
| pri const CLASS_NUMBER : base.u8 = 0x04 | |
| pri const CLASS_OPEN_CURLY_BRACE : base.u8 = 0x05 | |
| pri const CLASS_CLOSE_CURLY_BRACE : base.u8 = 0x06 | |
| pri const CLASS_OPEN_SQUARE_BRACKET : base.u8 = 0x07 | |
| pri const CLASS_CLOSE_SQUARE_BRACKET : base.u8 = 0x08 | |
| pri const CLASS_FALSE : base.u8 = 0x09 | |
| pri const CLASS_TRUE : base.u8 = 0x0A | |
| pri const CLASS_NULL_NAN_INF : base.u8 = 0x0B | |
| pri const CLASS_COMMENT : base.u8 = 0x0C | |
| // EXPECT_ETC are unions of LUT_CLASSES bitmasks. See LUT_CLASSES below. | |
| // | |
| // Bitwise or'ing these together gives 0x1FFE. Whitespace is never expected, as | |
| // it is handled separately. | |
| // | |
| // EXPECT_VALUE is also defined to be 0x1EB2, equivalent to (EXPECT_STRING | | |
| // EXPECT_NON_STRING_VALUE). | |
| // | |
| // "Non-string value" includes literals (false, true, null), numbers, arrays | |
| // and objects. | |
| // | |
| // "String value" includes "this" and "th\u0061t". | |
| // | |
| // Comments are always expected. Whether the relevant quirks are enabled are | |
| // checked elsewhere. | |
| pri const EXPECT_VALUE : base.u32 = 0x1EB2 | |
| pri const EXPECT_NON_STRING_VALUE : base.u32 = 0x1EB0 | |
| pri const EXPECT_STRING : base.u32 = 0x1002 | |
| pri const EXPECT_COMMA : base.u32 = 0x1004 | |
| pri const EXPECT_COLON : base.u32 = 0x1008 | |
| pri const EXPECT_NUMBER : base.u32 = 0x1010 | |
| pri const EXPECT_CLOSE_CURLY_BRACE : base.u32 = 0x1040 | |
| pri const EXPECT_CLOSE_SQUARE_BRACKET : base.u32 = 0x1100 | |
| // LUT_CLASSES is: | |
| // - 0x00 (bitmask 0x0001) is CLASS_WHITESPACE. | |
| // - 0x01 (bitmask 0x0002) is CLASS_STRING. | |
| // - 0x02 (bitmask 0x0004) is CLASS_COMMA. | |
| // - 0x03 (bitmask 0x0008) is CLASS_COLON. | |
| // - 0x04 (bitmask 0x0010) is CLASS_NUMBER. | |
| // - 0x05 (bitmask 0x0020) is CLASS_OPEN_CURLY_BRACE. | |
| // - 0x06 (bitmask 0x0040) is CLASS_CLOSE_CURLY_BRACE. | |
| // - 0x07 (bitmask 0x0080) is CLASS_OPEN_SQUARE_BRACKET. | |
| // - 0x08 (bitmask 0x0100) is CLASS_CLOSE_SQUARE_BRACKET. | |
| // - 0x09 (bitmask 0x0200) is CLASS_FALSE. | |
| // - 0x0A (bitmask 0x0400) is CLASS_TRUE. | |
| // - 0x0B (bitmask 0x0800) is CLASS_NULL_NAN_INF. | |
| // - 0x0C (bitmask 0x1000) is CLASS_COMMENT. | |
| // - 0x0D (bitmask 0x2000) is reserved. | |
| // - 0x0E (bitmask 0x4000) is reserved. | |
| // - 0x0F (bitmask 0x8000) is CLASS_BAD_INPUT. | |
| // | |
| // The bitmasks are used by the "expect" variable: what the next character | |
| // class can be. See EXPECT_ETC above. | |
| pri const LUT_CLASSES : roarray[256] base.u8[..= 0x0F] = [ | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x00 ..= 0x07. | |
| 0x0F, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x0F, 0x0F, // 0x08 ..= 0x0F. '\t', '\n', '\r'. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x10 ..= 0x17. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x18 ..= 0x1F. | |
| 0x00, 0x0F, 0x01, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x20 ..= 0x27. ' ', '"'. | |
| 0x0F, 0x0F, 0x0F, 0x0B, 0x02, 0x04, 0x0F, 0x0C, // 0x28 ..= 0x2F. '+', ',', '-', '/'. | |
| 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, // 0x30 ..= 0x37. '0'-'7'. | |
| 0x04, 0x04, 0x03, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x38 ..= 0x3F. '8'-'9', ':'. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x40 ..= 0x47. | |
| 0x0F, 0x0B, 0x0F, 0x0F, 0x0F, 0x0F, 0x0B, 0x0F, // 0x48 ..= 0x4F. 'I', 'N'. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x50 ..= 0x57. | |
| 0x0F, 0x0F, 0x0F, 0x07, 0x0F, 0x08, 0x0F, 0x0F, // 0x58 ..= 0x5F. '[', ']'. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x09, 0x0F, // 0x60 ..= 0x67. 'f'. | |
| 0x0F, 0x0B, 0x0F, 0x0F, 0x0F, 0x0F, 0x0B, 0x0F, // 0x68 ..= 0x6F. 'i', 'n'. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0A, 0x0F, 0x0F, 0x0F, // 0x70 ..= 0x77. 't'. | |
| 0x0F, 0x0F, 0x0F, 0x05, 0x0F, 0x06, 0x0F, 0x0F, // 0x78 ..= 0x7F. '{', '}'. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x80 ..= 0x87. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x88 ..= 0x8F. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x90 ..= 0x97. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0x98 ..= 0x9F. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xA0 ..= 0xA7. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xA8 ..= 0xAF. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xB0 ..= 0xB7. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xB8 ..= 0xBF. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xC0 ..= 0xC7. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xC8 ..= 0xCF. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xD0 ..= 0xD7. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xD8 ..= 0xDF. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xE0 ..= 0xE7. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xE8 ..= 0xEF. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xF0 ..= 0xF7. | |
| 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, // 0xF8 ..= 0xFF. | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| ] | |
| pri const LUT_DECIMAL_DIGITS : roarray[256] base.u8 = [ | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. | |
| 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'. | |
| 0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF. | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| ] | |
| pri const LUT_HEXADECIMAL_DIGITS : roarray[256] base.u8 = [ | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. | |
| 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'. | |
| 0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'. | |
| 0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x40 ..= 0x47. 'A'-'F'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. | |
| 0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x60 ..= 0x67. 'a'-'f'. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7. | |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF. | |
| // 0 1 2 3 4 5 6 7 | |
| // 8 9 A B C D E F | |
| ] |