Crate varing

Expand description

varing

Protobuf’s varint encoding/decoding for LEB128 friendly types with full const context operations supports.

LoC

§Installation

[dependencies]
varing = "0.5"

§Optional Features

arbitrary-int: Support encode/decode arbitrary-int types by using LEB128.
bnum: Support encode/decode bnum types by using LEB128.
chrono: Support encode/decode chrono types by using LEB128 (not fully compatible in const context).
chrono-tz: Support encode/decode chrono-tz types by using LEB128.
ethereum-types: Support encode/decode ethereum-types types by using LEB128.
half: Support encode/decode half types by using LEB128.
num-complex: Support encode/decode num-complex types by using LEB128.
num-rational: Support encode/decode num-rational types by using LEB128.
primitive-types: Support encode/decode primitive-types types by using LEB128.
ruint: Support encode/decode ruint types by using LEB128 (not compatible in const context).
time: Support encode/decode time types by using LEB128.

§Testing

This crate is tested with the quickcheck crate and cargo fuzz (including all optional features).

§License

varing is under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE, LICENSE-MIT for details.

Modules§

arbitrary_intarbitrary-int: LEB128 encoding/decoding for u1, u2 .. u127
bnumbnum_0_13: LEB128 encoding/decoding for bnum types.
chronochrono_0_4: LEB128 encoding/decoding for chrono types.
chrono_tzchrono-tz_0_10: LEB128 encoding/decoding for chrono-tz types.
ethereum_typesethereum-types_0_15: LEB128 encoding/decoding for ethereum-types types.
num_complexnum-complex_0_4: LEB128 encoding/decoding for num-complex types.
num_rationalnum-rational_0_4: LEB128 encoding/decoding for num-rational types.
packable: Packable trait for types that can be packed into a single value.
primitive_typesprimitive-types_0_13: LEB128 encoding/decoding for primitive-types types.
timetime_0_3: LEB128 encoding/decoding for time types.
utils: Utilities for encoding and decoding LEB128 variable length integers.

Structs§

MapDecoder: An iterator that decodes a sequence of varint values from a buffer.
SequenceDecoder: An iterator that decodes a sequence of varint values from a buffer.

Enums§

DecodeError: Decoding varint error.
EncodeError: Encode varint error

Traits§

Varint: A trait for types that can be encoded as variable-length integers (varints).

Functions§

consume_varint: Calculates the number of bytes occupied by a varint encoded value in the buffer.
decode_char: Decodes a char in LEB128 encoded format from the buffer.
decode_duration: Decodes a Duration in LEB128 encoded format from the buffer.
decode_f16_varint: Decodes an f16 in LEB128 encoded format from the buffer.
decode_f32_varint: Decodes an f32 in LEB128 encoded format from the buffer.
decode_f64_varint: Decodes an f64 in LEB128 encoded format from the buffer.
decode_i8_varint: Decodes an u8 in LEB128 encoded format from the buffer.
decode_i16_varint: Decodes an u16 in LEB128 encoded format from the buffer.
decode_i32_varint: Decodes an u32 in LEB128 encoded format from the buffer.
decode_i64_varint: Decodes an u64 in LEB128 encoded format from the buffer.
decode_i128_varint: Decodes an u128 in LEB128 encoded format from the buffer.
decode_map: Decodes a collection of entries from the buffer.
decode_sequence: Decodes a sequence of values from the buffer.
decode_u8_varint: Decodes an i8 in LEB128 encoded format from the buffer.
decode_u16_varint: Decodes an i16 in LEB128 encoded format from the buffer.
decode_u32_varint: Decodes an i32 in LEB128 encoded format from the buffer.
decode_u64_varint: Decodes an i64 in LEB128 encoded format from the buffer.
decode_u128_varint: Decodes an i128 in LEB128 encoded format from the buffer.
encode_char: Encodes a char value into LEB128 variable length format, and writes it to the buffer.
encode_char_to: Encodes a char value into LEB128 variable length format, and writes it to the buffer.
encode_duration: Encodes a Duration value into LEB128 variable length format, and writes it to the buffer.
encode_duration_to: Encodes a Duration value into LEB128 variable length format, and writes it to the buffer.
encode_f16_sequence_to: Encodes a sequence of f16 to the buffer.
encode_f16_varint: Encodes an f16 value into LEB128 variable length format, and writes it to the buffer.
encode_f16_varint_to: Encodes an f16 value into LEB128 variable length format, and writes it to the buffer.
encode_f32_sequence_to: Encodes a sequence of f32 to the buffer.
encode_f32_varint: Encodes an f32 value into LEB128 variable length format, and writes it to the buffer.
encode_f32_varint_to: Encodes an f32 value into LEB128 variable length format, and writes it to the buffer.
encode_f64_sequence_to: Encodes a sequence of f64 to the buffer.
encode_f64_varint: Encodes an f64 value into LEB128 variable length format, and writes it to the buffer.
encode_f64_varint_to: Encodes an f64 value into LEB128 variable length format, and writes it to the buffer.
encode_i8_sequence_to: Encodes a sequence of i8 to the buffer.
encode_i8_varint: Encodes an i8 value into LEB128 variable length format, and writes it to the buffer.
encode_i8_varint_to: Encodes an i8 value into LEB128 variable length format, and writes it to the buffer.
encode_i16_sequence_to: Encodes a sequence of i16 to the buffer.
encode_i16_varint: Encodes an i16 value into LEB128 variable length format, and writes it to the buffer.
encode_i16_varint_to: Encodes an i16 value into LEB128 variable length format, and writes it to the buffer.
encode_i32_sequence_to: Encodes a sequence of i32 to the buffer.
encode_i32_varint: Encodes an i32 value into LEB128 variable length format, and writes it to the buffer.
encode_i32_varint_to: Encodes an i32 value into LEB128 variable length format, and writes it to the buffer.
encode_i64_sequence_to: Encodes a sequence of i64 to the buffer.
encode_i64_varint: Encodes an i64 value into LEB128 variable length format, and writes it to the buffer.
encode_i64_varint_to: Encodes an i64 value into LEB128 variable length format, and writes it to the buffer.
encode_i128_sequence_to: Encodes a sequence of i128 to the buffer.
encode_i128_varint: Encodes an i128 value into LEB128 variable length format, and writes it to the buffer.
encode_i128_varint_to: Encodes an i128 value into LEB128 variable length format, and writes it to the buffer.
encode_map: Encodes a map of entries as varints and writes them to the buffer.
encode_sequence: Encodes a sequence of values as varints and writes them to the buffer.
encode_u8_sequence_to: Encodes a sequence of u8 to the buffer.
encode_u8_varint: Encodes an u8 value into LEB128 variable length format, and writes it to the buffer.
encode_u8_varint_to: Encodes an u8 value into LEB128 variable length format, and writes it to the buffer.
encode_u16_sequence_to: Encodes a sequence of u16 to the buffer.
encode_u16_varint: Encodes an u16 value into LEB128 variable length format, and writes it to the buffer.
encode_u16_varint_to: Encodes an u16 value into LEB128 variable length format, and writes it to the buffer.
encode_u32_sequence_to: Encodes a sequence of u32 to the buffer.
encode_u32_varint: Encodes an u32 value into LEB128 variable length format, and writes it to the buffer.
encode_u32_varint_to: Encodes an u32 value into LEB128 variable length format, and writes it to the buffer.
encode_u64_sequence_to: Encodes a sequence of u64 to the buffer.
encode_u64_varint: Encodes an u64 value into LEB128 variable length format, and writes it to the buffer.
encode_u64_varint_to: Encodes an u64 value into LEB128 variable length format, and writes it to the buffer.
encode_u128_sequence_to: Encodes a sequence of u128 to the buffer.
encode_u128_varint: Encodes an u128 value into LEB128 variable length format, and writes it to the buffer.
encode_u128_varint_to: Encodes an u128 value into LEB128 variable length format, and writes it to the buffer.
encoded_char_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range char::ENCODED_LEN_RANGE.
encoded_duration_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range Duration::ENCODED_LEN_RANGE.
encoded_f16_sequence_len: Returns the encoded length of a sequence of f16 values
encoded_f16_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of [f16::ENCODED_LEN_RANGE].
encoded_f32_sequence_len: Returns the encoded length of a sequence of f32 values
encoded_f32_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of f32::ENCODED_LEN_RANGE.
encoded_f64_sequence_len: Returns the encoded length of a sequence of f64 values
encoded_f64_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of f64::ENCODED_LEN_RANGE.
encoded_i8_sequence_len: Returns the encoded length of a sequence of i8 values
encoded_i8_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of i8::ENCODED_LEN_RANGE.
encoded_i16_sequence_len: Returns the encoded length of a sequence of i16 values
encoded_i16_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of i16::ENCODED_LEN_RANGE.
encoded_i32_sequence_len: Returns the encoded length of a sequence of i32 values
encoded_i32_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of i32::ENCODED_LEN_RANGE.
encoded_i64_sequence_len: Returns the encoded length of a sequence of i64 values
encoded_i64_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range i64::ENCODED_LEN_RANGE.
encoded_i128_sequence_len: Returns the encoded length of a sequence of i128 values
encoded_i128_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range i128::ENCODED_LEN_RANGE.
encoded_map_len: Returns the total length of a map of entries.
encoded_sequence_len: Returns the total number of bytes needed to encode a sequence of values.
encoded_u8_sequence_len: Returns the encoded length of a sequence of u8 values
encoded_u8_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of u8::ENCODED_LEN_RANGE.
encoded_u16_sequence_len: Returns the encoded length of a sequence of u16 values
encoded_u16_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of u16::ENCODED_LEN_RANGE.
encoded_u32_sequence_len: Returns the encoded length of a sequence of u32 values
encoded_u32_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range of u32::ENCODED_LEN_RANGE.
encoded_u64_sequence_len: Returns the encoded length of a sequence of u64 values
encoded_u64_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range u64::ENCODED_LEN_RANGE.
encoded_u128_sequence_len: Returns the encoded length of a sequence of u128 values
encoded_u128_varint_len: Returns the encoded length of the value in LEB128 variable length format. The returned value will be in range u128::ENCODED_LEN_RANGE.
map_decoder: Returns a sequence decoder for the given buffer.
sequence_decoder: Returns a sequence decoder for the given buffer.

Type Aliases§

CharBuffer: A buffer for storing LEB128 encoded char value.

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