browser_engine 0.1.0

#[derive(Debug, Clone, PartialEq)]
pub enum Literal {
    Number(f32),
    String(String),
    Boolean(bool),
    Null,
    Undefined,
}

#[derive(Debug, Clone, PartialEq)]
pub enum BinaryOp {
    Add,
    Sub,
    Mul,
    Div,
    Equal,        // ==
    StrictEqual,  // ===
    NotEqual,     // !=
    LessThan,     // <
    GreaterThan,  // >
    LessEqual,    // <=
    GreaterEqual, // >=
}

#[derive(Debug, Clone, PartialEq)]
pub enum Expr {
    Literal(Literal),
    Identifier(String),
    Binary {
        op: BinaryOp,
        left: Box<Expr>,
        right: Box<Expr>,
    },
    Assign {
        target: Box<Expr>,
        value: Box<Expr>,
    },
    Call {
        callee: Box<Expr>,
        args: Vec<Expr>,
    },
    Member {
        object: Box<Expr>,
        property: String,
    },
}

#[derive(Debug, Clone, PartialEq)]
pub enum Stmt {
    VarDecl {
        name: String,
        initializer: Option<Expr>,
    },
    Expr(Expr),
    Block(Vec<Stmt>),
    If {
        condition: Expr,
        then_branch: Box<Stmt>,
        else_branch: Option<Box<Stmt>>,
    },
    While {
        condition: Expr,
        body: Box<Stmt>,
    },
    FunctionDecl {
        name: String,
        params: Vec<String>,
        body: Vec<Stmt>,
    },
    Return(Option<Expr>),
}

#[derive(Debug, Clone, PartialEq)]
pub struct Program {
    pub body: Vec<Stmt>,
}