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use crate::{AsgConvertError, Expression, FromAst, Node, PartialType, Scope, Span, Statement, Type};
use std::cell::Cell;
#[derive(Clone)]
pub struct ReturnStatement<'a> {
pub parent: Cell<Option<&'a Statement<'a>>>,
pub span: Option<Span>,
pub expression: Cell<&'a Expression<'a>>,
}
impl<'a> Node for ReturnStatement<'a> {
fn span(&self) -> Option<&Span> {
self.span.as_ref()
}
}
impl<'a> FromAst<'a, leo_ast::ReturnStatement> for ReturnStatement<'a> {
fn from_ast(
scope: &'a Scope<'a>,
statement: &leo_ast::ReturnStatement,
_expected_type: Option<PartialType<'a>>,
) -> Result<Self, AsgConvertError> {
let return_type: Option<Type> = scope
.resolve_current_function()
.map(|x| x.output.clone())
.map(Into::into);
Ok(ReturnStatement {
parent: Cell::new(None),
span: Some(statement.span.clone()),
expression: Cell::new(<&Expression<'a>>::from_ast(
scope,
&statement.expression,
return_type.map(Into::into),
)?),
})
}
}
impl<'a> Into<leo_ast::ReturnStatement> for &ReturnStatement<'a> {
fn into(self) -> leo_ast::ReturnStatement {
leo_ast::ReturnStatement {
expression: self.expression.get().into(),
span: self.span.clone().unwrap_or_default(),
}
}
}