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greg 2018-04-29 19:45:04 -07:00
parent f22f089b9b
commit 12c7cebb38
1 changed files with 6 additions and 2 deletions
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8
schala-repl/src/language.rs
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@ -186,6 +186,12 @@ pub trait ProgrammingLanguageInterface {
} }
} }
/* a pass_chain function signature looks like:
* fn(&mut ProgrammingLanguageInterface, A, Option<&mut DebugHandler>) -> Result<B, String>
*
* TODO use some kind of failure-handling library to make this better
*/
#[macro_export] #[macro_export]
macro_rules! pass_chain { macro_rules! pass_chain {
($state:expr, $($pass:path), *) => { ($state:expr, $($pass:path), *) => {
@ -193,8 +199,6 @@ macro_rules! pass_chain {
}; };
} }
//generates a function resulting in (for now) the return type of the last one
//but should in the future return a FinishedComputation
#[macro_export] #[macro_export]
macro_rules! pass_chain_helper { macro_rules! pass_chain_helper {
($state:expr, $input:expr, $pass:path $(, $rest:path)*) => { ($state:expr, $input:expr, $pass:path $(, $rest:path)*) => {