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use {*};

#[derive(Clone, Copy, Debug, PartialEq)]
pub struct FunctionDefinition<'ast> {
    pub name: Option<IdentifierNode<'ast>>,
    pub params: ParameterList<'ast>,
    pub visibility: Option<Node<'ast, FunctionVisibility>>,
    pub mutability: Option<Node<'ast, StateMutability>>,
    pub modifiers: ModifierInvocationList<'ast>,
    pub returns: ParameterList<'ast>,
    pub block: Option<BlockNode<'ast>>,
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub enum FunctionVisibility {
    External,
    Public,
    Internal,
    Private,
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub enum StateMutability {
    Pure,
    Constant,
    View,
    Payable,
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub struct ModifierInvocation<'ast> {
    pub id: IdentifierNode<'ast>,
    pub arguments: ExpressionList<'ast>,
}

#[derive(Clone, Copy, Debug, PartialEq)]
pub struct Parameter<'ast> {
    pub type_name: TypeNameNode<'ast>,
    pub name: Option<IdentifierNode<'ast>>,
}

pub type ParameterList<'ast> = NodeList<'ast, Parameter<'ast>>;
pub type ModifierInvocationList<'ast> = NodeList<'ast, ModifierInvocation<'ast>>;