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use crate::nodes::InnerNode;
use crate::nodes::InspectVec;
use crate::Loc;
use crate::Node;

#[cfg(feature = "compile-with-external-structures")]
use crate::containers::ExternalList;
#[cfg(feature = "compile-with-external-structures")]
type List<T> = ExternalList<T>;
#[cfg(not(feature = "compile-with-external-structures"))]
type List<T> = Vec<T>;


/// Represents `next` keyword
///
#[derive(Debug, Clone, PartialEq)]
#[repr(C)]
pub struct Next {
    /// Arguments given to `next`
    ///
    pub args: List<Node>,
    /// Location of the `next` keyword
    ///
    /// ```text
    /// next 42
    /// ```
    ///
    pub keyword_l: Loc,
    /// Location of the full expression
    ///
    /// ```text
    /// next(42)
    /// ~~~~~~~~
    /// ```
    ///
    pub expression_l: Loc,
}

impl InnerNode for Next {
    fn expression(&self) -> &Loc {
        &self.expression_l
    }

    fn inspected_children(&self, indent: usize) -> Vec<String> {
        let mut result = InspectVec::new(indent);
        result.push_nodes(&self.args);
        result.strings()
    }

    fn str_type(&self) -> &'static str {
        "next"
    }

    fn print_with_locs(&self) {
        println!("{}", self.inspect(0));
        for node in self.args.iter() {
            node.inner_ref().print_with_locs();
        }
        self.keyword_l.print("keyword");
        self.expression_l.print("expression");
    }
}