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

use crate::token::{self, Token};

/// Enumeration of all types of expressions.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Expression {
    Assign {
        name: Token,
        value: Box<Expression>,
    },
    Binary {
        left: Box<Expression>,
        operator: Token,
        right: Box<Expression>,
    },
    Call {
        callee: Box<Expression>,
        paren: Token,
        args: Vec<Expression>,
    },
    Get {
        object: Box<Expression>,
        name: Token,
    },
    Set {
        object: Box<Expression>,
        name: Token,
        value: Box<Expression>,
    },
    This {
        keyword: Token,
    },
    Grouping {
        expression: Box<Expression>,
    },
    Literal {
        value: token::Literal,
    },
    Logical {
        left: Box<Expression>,
        operator: Token,
        right: Box<Expression>,
    },
    Unary {
        operator: Token,
        right: Box<Expression>,
    },
    Variable {
        name: Token,
    },
}