pub fn variable_assign(
var_assgn: &VariableAssign,
plan: Plan,
symbols: SymbolTableRef,
functions: FunctionsRef,
) -> MResult<Value>
pub fn variable_assign(
var_assgn: &VariableAssign,
plan: Plan,
symbols: SymbolTableRef,
functions: FunctionsRef,
) -> MResult<Value>