67 lines
1.9 KiB
Rust
67 lines
1.9 KiB
Rust
// Copyright 2015 Matthew Collins
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use nbt;
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use protocol::Serializable;
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use std::io;
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use std::io::{Read, Write};
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use byteorder::{BigEndian, WriteBytesExt, ReadBytesExt};
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#[derive(Debug)]
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pub struct Stack {
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id: isize,
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count: isize,
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damage: isize,
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tag: Option<nbt::NamedTag>,
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}
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impl Default for Stack {
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fn default() -> Stack {
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Stack {
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id: -1,
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count: 0,
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damage: 0,
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tag: None,
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}
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}
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}
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impl Serializable for Option<Stack> {
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fn read_from(buf: &mut io::Read) -> Result<Option<Stack>, io::Error> {
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let id = try!(buf.read_i16::<BigEndian>());
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if id == -1 {
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return Ok(None);
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}
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Ok(Some(Stack {
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id: id as isize,
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count: try!(buf.read_u8()) as isize,
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damage: try!(buf.read_i16::<BigEndian>()) as isize,
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tag: try!(Serializable::read_from(buf)),
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}))
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}
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fn write_to(&self, buf: &mut io::Write) -> Result<(), io::Error> {
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match *self {
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Some(ref val) => {
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try!(buf.write_i16::<BigEndian>(val.id as i16));
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try!(buf.write_u8(val.count as u8));
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try!(buf.write_i16::<BigEndian>(val.damage as i16));
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try!(val.tag.write_to(buf));
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}
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None => try!(buf.write_i16::<BigEndian>(-1)),
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}
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Result::Ok(())
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}
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}
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