valkyrie-ast 0.1.4

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

/// `guard ... else { ... }`
///
/// The else block must use control.
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct GuardStatement {
    pub condition: GuardPattern,
    pub body: StatementBlock,
    /// The range of the node
    pub span: Range<u32>,
}

/// `guard case ...`
#[derive(Clone, Debug, PartialEq, Eq, Hash, From)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub enum GuardPattern {
    Case(Box<ImplicitCaseNode>),
    Inline(Box<ExpressionNode>),
}

impl GuardStatement {
    /// Get the last statement in the block
    pub fn last(&self) -> Option<&StatementBody> {
        Some(&self.body.terms.last()?.r#type)
    }
}