crafting-interpreters/rust/rox/src/statement.rs

use crate::{expression::Expression, token::Token};

/// Enumeration of all types of statements.
#[derive(Debug, Clone, PartialEq)]
pub enum Statement {
    Block(Vec<Statement>),
    Print(Expression),
    Expression(Expression),
    Var {
        name: Token,
        initializer: Box<Option<Expression>>,
    },
    If {
        condition: Expression,
        then_branch: Box<Statement>,
        else_branch: Option<Box<Statement>>,
    },
    While {
        condition: Expression,
        body: Box<Statement>,
    },
    Function {
        name: Token,
        params: Vec<Token>,
        body: Vec<Statement>,
    },
    Return {
        keyword: Token,
        value: Option<Expression>,
    },
    Class {
        name: Token,
        methods: Vec<Statement>,
    },
}