stmt.py 文件源码

def aug_assign(self):
        target = self.get_target(self.stmt.target)
        sub = Expr.parse_value_expr(self.stmt.value, self.context)
        if not isinstance(self.stmt.op, (ast.Add, ast.Sub, ast.Mult, ast.Div, ast.Mod)):
            raise Exception("Unsupported operator for augassign")
        if not isinstance(target.typ, BaseType):
            raise TypeMismatchException("Can only use aug-assign operators with simple types!", self.stmt.target)
        if target.location == 'storage':
            o = Expr.parse_value_expr(ast.BinOp(left=LLLnode.from_list(['sload', '_stloc'], typ=target.typ, pos=target.pos),
                                    right=sub, op=self.stmt.op, lineno=self.stmt.lineno, col_offset=self.stmt.col_offset), self.context)
            return LLLnode.from_list(['with', '_stloc', target, ['sstore', '_stloc', base_type_conversion(o, o.typ, target.typ)]], typ=None, pos=getpos(self.stmt))
        elif target.location == 'memory':
            o = Expr.parse_value_expr(ast.BinOp(left=LLLnode.from_list(['mload', '_mloc'], typ=target.typ, pos=target.pos),
                                    right=sub, op=self.stmt.op, lineno=self.stmt.lineno, col_offset=self.stmt.col_offset), self.context)
            return LLLnode.from_list(['with', '_mloc', target, ['mstore', '_mloc', base_type_conversion(o, o.typ, target.typ)]], typ=None, pos=getpos(self.stmt))