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use bytes::{BufMut, BytesMut};
use crate::reader::{BufferMutReader, BufferReader};
use crate::writer::BufferWriter;
pub mod types {
pub const BOOL: u8 = 0b0000_0000;
pub const I8: u8 = 0b0001_0000;
pub const U8: u8 = 0b0010_0000;
pub const I16: u8 = 0b0011_0001;
pub const U16: u8 = 0b0100_0001;
pub const I32: u8 = 0b0101_0010;
pub const U32: u8 = 0b0111_0010;
pub const I64: u8 = 0b1000_0011;
pub const U64: u8 = 0b1001_0011;
pub const F32: u8 = 0b1010_0010;
pub const F64: u8 = 0b1011_0011;
pub const BINARY: u8 = 0b1100_0000;
pub const STRING: u8 = 0b1100_0001;
#[inline]
pub fn len(data_type_id: u8) -> u8 {
let length_mod = data_type_id & 0b0000_1111;
if length_mod == 0 {
1
} else {
2 << (length_mod - 1)
}
}
}
#[derive(Clone, Debug)]
pub struct Buffer {
pub(crate) buf: BytesMut,
pub(crate) buf_len: usize,
}
impl Buffer {
pub fn new() -> Self {
Buffer {
buf: BytesMut::with_capacity(256),
buf_len: 0,
}
}
pub fn with_capacity(capacity: usize) -> Self {
Buffer {
buf: BytesMut::with_capacity(capacity),
buf_len: 0,
}
}
pub fn from(bytes: BytesMut) -> Self {
let buffer_len = bytes.len();
Buffer {
buf: bytes,
buf_len: buffer_len,
}
}
pub fn len(&self) -> usize {
self.buf_len
}
pub fn as_slice(&self) -> &[u8] {
self.buf.as_ref()
}
pub fn extend(&mut self, other: &Buffer) -> Result<(), std::io::Error> {
self.buf_len += other.buf_len;
self.buf.put_slice(other.as_slice());
Ok(())
}
pub fn as_reader<'a, 'b>(&'a mut self, data_types: &'b [u8]) -> BufferReader<'a, 'b> {
BufferReader::new(self, data_types)
}
pub fn as_reader_mut<'a, 'b>(&'a mut self, data_types: &'b [u8]) -> BufferMutReader<'a, 'b> {
BufferMutReader::new(self, data_types)
}
pub fn as_writer<'a, 'b>(&'a mut self, data_types: &'b [u8]) -> BufferWriter<'a, 'b> {
BufferWriter::new(self, data_types)
}
}
impl std::cmp::PartialEq for Buffer {
fn eq(&self, other: &Self) -> bool {
if self.buf_len != self.buf_len {
return false;
}
self.as_slice().eq(other.as_slice())
}
}
impl std::cmp::Eq for Buffer {}
impl std::hash::Hash for Buffer {
fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
self.as_slice().hash(state)
}
}