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Handle variable lookups

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greg 2018-02-26 18:23:10 -08:00
parent e0cc12276c
commit 51cf8a4824
1 changed files with 8 additions and 4 deletions
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12
src/schala_lang/typechecking.rs
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@ -107,7 +107,7 @@ impl TypeContext {
self.unify(t2, rhs_ty)?;
Ok(t3)
},
other => return Err(format!("{:?} is not a binary function type", other))
other => Err(format!("{:?} is not a binary function type", other))
}
},
&PrefixExp(ref op, ref expr) => match op.get_type()? {
@ -116,12 +116,16 @@ impl TypeContext {
self.unify(t1, expr_ty)?;
Ok(t2)
},
other => return Err(format!("{:?} is not a prefix op function type", other))
other => Err(format!("{:?} is not a prefix op function type", other))
},
&Value(ref name) => {
match self.bindings.get(name) {
Some(ty) => Ok(ty.clone()),
None => Err(format!("No binding found for variable: {}", name)),
}
},
/*
PrefixExp(Operation, Box<Expression>),
TupleLiteral(Vec<Expression>),
Value(Rc<String>, Vec<(Rc<String>, Expression)>),
Call {
f: Box<Expression>,
arguments: Vec<Expression>,