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More work on variables

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greg 2018-05-21 00:06:31 -07:00
parent 217ee73fc9
commit 4db3595d7c
1 changed files with 13 additions and 1 deletions
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14
schala-lang/src/typechecking.rs
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@ -129,6 +129,10 @@ impl TypeEnvironment {
fn lookup(&self, name: &TypeName) -> Option<PolyType> {
self.map.get(name).map(|x| x.clone())
}
fn insert(&mut self, name: &TypeName, ty: PolyType) {
self.map.insert(name.clone(), ty);
}
}
pub struct TypeContext {
@ -180,7 +184,15 @@ impl<'a> Infer<'a> {
Ok(ret)
}
fn declaration(&mut self, expr: &parsing::Declaration) -> InferResult<MonoType> {
fn declaration(&mut self, decl: &parsing::Declaration) -> InferResult<MonoType> {
use parsing::Declaration::*;
match decl {
Binding { name, expr, .. } => {
let ty = self.anno_expression(&expr)?;
return Err(InferError::Custom(format!("This decl not yet supported")))
},
_ => return Err(InferError::Custom(format!("This decl not yet supported")))
}
Ok(MonoType::Const(TypeConst::Unit))
}