valkyrie-ast 0.1.4

Strong typed abstract syntax tree of valkyrie language
Documentation 
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use super::*;
#[cfg(feature = "pretty-print")]
mod display;

#[derive(Clone, Debug, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct IdentifierNode {
    pub name: String,
    /// The range of the node
    pub span: Range<u32>,
}

/// `packageāˆ·moduleāˆ·name`
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct NamePathNode {
    /// The names of the identifier.
    pub names: Vec<IdentifierNode>,
    /// The range of the identifier.
    pub span: Range<u32>,
}

/// `$, $1, $x`
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct LambdaSlotNode {
    pub name: String,
    pub span: Range<u32>,
}

impl LambdaSlotNode {
    pub fn new<S>(name: S, span: Range<u32>) -> Self
    where
        S: ToString,
    {
        Self { name: name.to_string(), span }
    }
}

impl NamePathNode {
    pub fn new<I>(names: I) -> Self
    where
        I: IntoIterator<Item = IdentifierNode>,
    {
        let names: Vec<IdentifierNode> = names.into_iter().collect();
        let start = names.iter().map(|s| s.span.start).min().unwrap_or(0);
        let end = names.iter().map(|n| n.span.end).max().unwrap_or(0);
        Self { names, span: start..end }
    }
    pub fn join<I: IntoIterator<Item = IdentifierNode>>(mut self, other: I) -> Self {
        self.names.extend(other);
        self
    }
}

impl IdentifierNode {
    pub fn new<S: ToString>(s: S, span: Range<u32>) -> Self {
        Self { name: s.to_string(), span }
    }
    pub fn is_normal(&self) -> bool {
        self.name.starts_with(|c: char| c.is_ascii_lowercase())
    }
}

//
// impl ValkyrieIdentifier {
//     pub fn new(name: impl Into<String>, file: FileID, range: &Range<usize>) -> Self {
//         Self { name: name.into(), span: FileSpan { file, head: range.start, tail: range.end } }
//     }
//     pub fn to_node(self, file: FileID, range: &Range<usize>) -> ValkyrieASTNode {
//         ValkyrieASTKind::Namepath(vec![self]).to_node(file, range)
//     }
// }
//
// impl ValkyrieASTNode {
//     pub fn identifier(name: impl Into<String>, file: FileID, range: &Range<usize>) -> Self {
//         ValkyrieIdentifier::new(name, file, range).to_node(file, range)
//     }
//     pub fn namepath(items: Vec<ValkyrieIdentifier>, file: FileID, range: &Range<usize>) -> Self {
//         Self { kind: ValkyrieASTKind::Namepath(items), span: FileSpan::new(file, range) }
//     }
// }