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parse expect

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This commit is contained in:
Folkert 2021-04-22 23:00:44 +02:00
parent 50942325b9
commit 700e7d9686
12 changed files with 223 additions and 5 deletions
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2
compiler/can/src/def.rs
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@ -1489,6 +1489,8 @@ fn to_pending_def<'a>(
}
}
Expect(_condition) => todo!(),
SpaceBefore(sub_def, _) | SpaceAfter(sub_def, _) => {
to_pending_def(env, var_store, sub_def, scope, pattern_type)
}

1
compiler/can/src/expr.rs
View file

@ -649,6 +649,7 @@ pub fn canonicalize_expr<'a>(
Output::default(),
)
}
ast::Expr::Expect(_condition, _continuation) => todo!(),
ast::Expr::If(if_thens, final_else_branch) => {
let mut branches = Vec::with_capacity(1);
let mut output = Output::default();

12
compiler/can/src/operator.rs
View file

@ -107,6 +107,10 @@ pub fn desugar_def<'a>(arena: &'a Bump, def: &'a Def<'a>) -> Def<'a> {
body_pattern: *body_pattern,
body_expr: desugar_expr(arena, body_expr),
},
Expect(condition) => {
let desugared_condition = &*arena.alloc(desugar_expr(arena, condition));
Expect(desugared_condition)
}
NotYetImplemented(s) => todo!("{}", s),
}
}
@ -356,6 +360,14 @@ pub fn desugar_expr<'a>(arena: &'a Bump, loc_expr: &'a Located<Expr<'a>>) -> &'a
region: loc_expr.region,
})
}
Expect(condition, continuation) => {
let desugared_condition = &*arena.alloc(desugar_expr(arena, &condition));
let desugared_continuation = &*arena.alloc(desugar_expr(arena, &continuation));
arena.alloc(Located {
value: Expect(desugared_condition, desugared_continuation),
region: loc_expr.region,
})
}
}
}