pub(crate) struct TranslationUnit {

    pub(crate) external_decls: Vec<Decl>,

}

pub(crate) enum Decl {

    Var(VarDecl),

    Func(FuncDecl),

}

pub(crate) struct VarDecl {

    pub(crate) type_specifier: Type,

    // TODO(feroldi): This cannot be a string for long, it has to be a Symbol thing.

    pub(crate) identifier: String,

    pub(crate) initializer: Option<IntegerLiteral>,

}

pub(crate) struct FuncDecl {

    pub(crate) ret_type_specifier: Type,

    // TODO(feroldi): This cannot be a string for long, it has to be a Symbol thing.

    pub(crate) identifier: String,

    pub(crate) parameters: Vec<Param>,

}

pub(crate) struct Param {

    pub(crate) type_specifier: Type,

    // TODO(feroldi): This cannot be a string for long, it has to be a Symbol thing.

    pub(crate) identifier: Option<String>,

}

pub(crate) struct IntegerLiteral {

    pub(crate) value: u64,

    pub(crate) ty: Type,

}

pub(crate) enum Type {

    BuiltinType(BuiltinTypeKind),

}

pub(crate) enum BuiltinTypeKind {

    Int,

    Long,

}