From ae64ba58b3bc5a9a023974f37515aee9862548fd Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Mon, 8 Mar 2021 07:27:57 -0700 Subject: Introduce comma_operation This adds class comma_operation, which implements BINOP_COMMA. gdb/ChangeLog 2021-03-08 Tom Tromey * ax-gdb.c (comma_operation::do_generate_ax): New method. --- gdb/expop.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'gdb/expop.h') diff --git a/gdb/expop.h b/gdb/expop.h index 4bf32f5..2fa5b2f 100644 --- a/gdb/expop.h +++ b/gdb/expop.h @@ -1208,6 +1208,37 @@ protected: override; }; +/* C-style comma operator. */ +class comma_operation + : public maybe_constant_operation +{ +public: + + using maybe_constant_operation::maybe_constant_operation; + + value *evaluate (struct type *expect_type, + struct expression *exp, + enum noside noside) override + { + /* The left-hand-side is only evaluated for side effects, so don't + bother in other modes. */ + if (noside == EVAL_NORMAL) + std::get<0> (m_storage)->evaluate (nullptr, exp, noside); + return std::get<1> (m_storage)->evaluate (nullptr, exp, noside); + } + + enum exp_opcode opcode () const override + { return BINOP_COMMA; } + +protected: + + void do_generate_ax (struct expression *exp, + struct agent_expr *ax, + struct axs_value *value, + struct type *cast_type) + override; +}; + } /* namespace expr */ #endif /* EXPOP_H */ -- cgit v1.1