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use crate::nodes::InnerNode;
use crate::nodes::InspectVec;
use crate::source::Range;
use crate::Node;
/// Represents `until` loop
#[derive(Debug, Clone, PartialEq)]
pub struct Until {
    /// Condition of the loop
    pub cond: Node,
    /// Body of the loop.
    ///
    /// `None` if body is empty
    pub body: Option<Node>,
    /// Location of the `until` keyword
    ///
    /// ```text
    /// until cond do; foo; end
    /// ~~~~~
    /// ```
    pub keyword_l: Range,
    /// Location of the `do` keyword
    ///
    /// ```text
    /// until cond do; foo; end
    ///            ~~
    /// ```
    ///
    /// `do` is optional, and so `begin_l` can be `None`
    pub begin_l: Option<Range>,
    /// Location of the `end` keyword
    ///
    /// ```text
    /// until cond do; foo; end
    ///                     ~~~
    /// ```
    ///
    /// `None` if loop is a modifier (i.e. `foo until bar`)
    pub end_l: Option<Range>,
    /// Location of the full expression
    ///
    /// ```text
    /// until cond do; foo; end
    /// ~~~~~~~~~~~~~~~~~~~~~~~
    ///
    /// foo until bar
    /// ~~~~~~~~~~~~~
    /// ```
    pub expression_l: Range,
}


impl InnerNode for Until {
    fn expression(&self) -> &Range {
        &self.expression_l
    }

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

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

    fn print_with_locs(&self) {
        println!("{}", self.inspect(0));
        self.expression_l.print("expression");
        if let Some(range) = &self.end_l {
            range.print("end");
        }
        if let Some(range) = &self.begin_l {
            range.print("begin");
        }
        self.keyword_l.print("keyword");
        if let Some(node) = &self.body {
            node.inner_ref().print_with_locs();
        }
        self.cond.inner_ref().print_with_locs();
    }
}