use super::*;

pub struct Module {
    items: Vec<Id<Item>>,
}

impl Parsable for Module {
    fn parse(ctx: &mut ParseCtx) -> Result<Self, CompilerMsg> {
        let mut items = Vec::new();
        if ctx.peek().is_none() {
            return Ok(Self { items });
        }
        items.push(ctx.parse()?);
        while *ctx.expect_peek()? == Token::Semicolon {
            ctx.next();
            items.push(ctx.parse()?);
        }
        Ok(Self { items })
    }
}

impl FmtNode for Module {
    fn fmt(&self, f: &mut std::fmt::Formatter, mut ctx: DisplayCtx) -> std::fmt::Result {
        ctx.indent += 3;
        write!(f, "{{")?;
        if !self.items.is_empty() {
            writeln!(f)?;
        }
        for &i in &self.items {
            writeln!(f, "{}{};", " ".repeat(ctx.indent), i.dsp(ctx))?;
        }
        write!(f, "}}")?;
        Ok(())
    }
}