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Making use of UnfinishedComputation

This commit is contained in:
greg 2018-04-29 20:58:08 -07:00
parent 18c86c26f0
commit fb4de6f2d6
1 changed files with 6 additions and 8 deletions
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14
schala-repl/src/language.rs
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@ -197,32 +197,30 @@ macro_rules! pass_chain {
($state:expr, $($pass:path), *) => {
|text_input| {
let mut comp = UnfinishedComputation::default();
pass_chain_helper! { $state; text_input $(, $pass)* }
pass_chain_helper! { $state, comp; text_input $(, $pass)* }
}
};
}
#[macro_export]
macro_rules! pass_chain_helper {
($state:expr; $input:expr, $pass:path $(, $rest:path)*) => {
($state:expr, $comp:expr; $input:expr, $pass:path $(, $rest:path)*) => {
{
let pass_name = stringify!($pass);
println!("Running pass {}", pass_name);
let output = $pass($state, $input);
match output {
Ok(result) => pass_chain_helper! { $state; result $(, $rest)* },
Ok(result) => pass_chain_helper! { $state, $comp; result $(, $rest)* },
Err(err) => {
let comp = UnfinishedComputation::default();
comp.output(Err(format!("Pass {} failed with {:?}", pass_name, err)))
$comp.output(Err(format!("Pass {} failed with {:?}", pass_name, err)))
}
}
}
};
// Done
($state:expr; $final_output:expr) => {
($state:expr, $comp:expr; $final_output:expr) => {
{
let comp = UnfinishedComputation::default();
let final_output: FinishedComputation = comp.finish(Ok($final_output));
let final_output: FinishedComputation = $comp.finish(Ok($final_output));
final_output
}
};