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require_relative "expr"
module Lox
module Stmt
def self.stmt(name, *children)
klass = Struct.new(name.to_s, *children) do
def accept(visitor)
klass = self.class.to_s.split("::").last.downcase
visitor.send("visit_#{klass}", self)
end
end
const_set(name, klass)
end
stmt :Block, :stmts
stmt :Fun, :name, :params, :body
stmt :Expr, :expr
stmt :If, :cond, :then, :else
stmt :Print, :expr
stmt :Var, :name, :initializer
stmt :While, :cond, :body
end
end