# Parse a full expression given as a string
	# Fatal error if the `string` is not a syntactically correct expression
	fun parse_expr(string: String): AExpr
	do
		var mod_string = "var dummy = \n{string}"
		var nmodule = parse_module(mod_string)
		var nexpr = nmodule.n_classdefs.first.n_propdefs.first.as(AMethPropdef).n_block.as(ABlockExpr).n_expr.first.as(AVardeclExpr).n_expr.as(not null)
		return nexpr
	end