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feat: implement semantic check for a function declaration

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This commit is contained in:
Araozu 2024-08-27 10:15:04 -05:00
parent b481351597
commit 46758f1ddf
3 changed files with 16 additions and 6 deletions
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2
Cargo.lock generated
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@ -92,7 +92,7 @@ dependencies = [
[[package]]
name = "thp"
version = "0.1.0"
version = "0.1.1"
dependencies = [
"colored",
"serde",

2
Cargo.toml
View File

@ -1,6 +1,6 @@
[package]
name = "thp"
version = "0.1.0"
version = "0.1.1"
edition = "2021"

18
src/semantic/checks/function_declaration.rs
View File

@ -37,14 +37,24 @@ impl SemanticCheck for FunctionDeclaration<'_> {
return Err(err);
}
}
BlockMember::Stmt(Statement::FnDecl(_)) => {
todo!("Function declaration: semantic check not implemented")
BlockMember::Stmt(Statement::FnDecl(f)) => {
// TODO: (for now) a function cannot be declared inside another function.
let error = SemanticError {
error_start: f.identifier.position,
error_end: f.identifier.get_end_position(),
reason: format!(
"A function cannot be defined inside another function."
),
};
return Err(MistiError::Semantic(error));
}
_ => todo!("Expression: semantic check not implemented"),
BlockMember::Expr(e) => e.check_semantics(scope)?,
}
}
// TODO: Check the return type of the function
// TODO: Check that the return type of the function
// matches the return type of the last expression
scope.insert(function_name, Type::Function(vec![], "Unit".into()));