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hacky implementation of literal_length

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This commit is contained in:
Dennis Ranke
2022-10-15 17:30:12 +02:00
parent 39c95598f2
commit dd5b0043dd
3 changed files with 116 additions and 70 deletions
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23
src/parsing_packer.rs
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@@ -15,7 +15,7 @@ pub fn pack(
let mut parse = parse(data, Config::from_level(level), config, progress_cb);
let mut ops = vec![];
while let Some(link) = parse {
ops.push(link.op);
ops.push(link.op.clone());
parse = link.prev.clone();
}
let mut state = lz::CoderState::new(config);
@@ -32,9 +32,15 @@ struct Parse {
op: lz::Op,
}
struct LiteralPrefix {
arrival: Arrival,
prefix: Vec<u8>,
}
struct Arrival {
parse: Option<Rc<Parse>>,
state: lz::CoderState,
literal_prefix: Option<Box<LiteralPrefix>>,
cost: f64,
}
@@ -130,6 +136,7 @@ fn parse(
op,
})),
state,
literal_prefix: None,
cost: arrival.cost + cost_counter.cost(),
},
max_arrivals,
@@ -141,6 +148,7 @@ fn parse(
Arrival {
parse: None,
state: lz::CoderState::new(encoding_config),
literal_prefix: None,
cost: 0.0,
},
max_arrivals,
@@ -252,19 +260,26 @@ fn parse(
}
cost_counter.reset();
let mut state = arrival.state;
let op = lz::Op::Literal(data[pos]);
let (arrival, mut prefix) = if let Some(prefix) = arrival.literal_prefix {
(prefix.arrival, prefix.prefix)
} else {
(arrival, vec![])
};
let mut state = arrival.state.clone();
prefix.push(data[pos]);
let op = lz::Op::Literal(prefix.clone());
op.encode(cost_counter, &mut state, encoding_config);
add_arrival(
&mut arrivals,
pos + 1,
Arrival {
parse: Some(Rc::new(Parse {
prev: arrival.parse,
prev: arrival.parse.clone(),
op,
})),
state,
cost: arrival.cost + cost_counter.cost(),
literal_prefix: Some(Box::new(LiteralPrefix { arrival, prefix })),
},
max_arrivals,
);