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Improve function Display implementation

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This commit is contained in:
Jeff 2023-12-30 10:23:00 -05:00
parent 9d94cb9af4
commit 02b30d3730
1 changed files with 29 additions and 8 deletions
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37
src/value/function.rs
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@ -37,13 +37,13 @@ impl Function {
&self.r#type
}
pub fn return_type(&self) -> Result<&Type> {
pub fn return_type(&self) -> &Type {
match &self.r#type {
Type::Function {
parameter_types: _,
return_type,
} => Ok(return_type.as_ref()),
_ => todo!(),
} => return_type.as_ref(),
_ => &Type::None,
}
}
@ -65,10 +65,31 @@ impl Function {
impl Display for Function {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
write!(
f,
"Function {{ parameters: {:?}, body: {:?} }}",
self.parameters, self.body
)
write!(f, "(")?;
let (parameter_types, return_type) = if let Type::Function {
parameter_types,
return_type,
} = &self.r#type
{
(parameter_types, return_type)
} else {
return Err(fmt::Error);
};
for (index, (parameter, r#type)) in self
.parameters
.iter()
.zip(parameter_types.iter())
.enumerate()
{
write!(f, "{} <{}>", parameter.inner(), r#type)?;
if index != self.parameters.len() - 1 {
write!(f, ", ")?;
}
}
write!(f, ") -> {}", return_type)
}
}