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use crate::ast;
use crate::parsing::Opaque;
use crate::{Id, Spanned, ToTokens};

/// A function call `<expr>(<args>)`.
///
/// # Examples
///
/// ```rust
/// use rune::{testing, ast};
///
/// testing::roundtrip::<ast::ExprCall>("test()");
/// ```
#[derive(Debug, Clone, PartialEq, Eq, ToTokens, Spanned)]
pub struct ExprCall {
    /// Opaque identifier related with call.
    #[rune(id)]
    pub id: Option<Id>,
    /// Attributes associated with expression.
    #[rune(iter)]
    pub attributes: Vec<ast::Attribute>,
    /// The name of the function being called.
    pub expr: ast::Expr,
    /// The arguments of the function call.
    pub args: ast::Parenthesized<ast::Expr, T![,]>,
}

expr_parse!(Call, ExprCall, "call expression");

impl Opaque for ExprCall {
    fn id(&self) -> Option<Id> {
        self.id
    }
}