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Introduce typeof_operation

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This adds class typeof_operation, which implements OP_TYPEOF.

gdb/ChangeLog
2021-03-08  Tom Tromey  <tom@tromey.com>

	* expop.h (class typeof_operation): New.
This commit is contained in:
Tom Tromey 2021-03-08 07:27:57 -07:00
parent 5b5f5140e1
commit 4efc574cb9
2 changed files with 29 additions and 0 deletions
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4
gdb/ChangeLog
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@ -1,3 +1,7 @@
2021-03-08 Tom Tromey <tom@tromey.com>
* expop.h (class typeof_operation): New.
2021-03-08 Tom Tromey <tom@tromey.com>
* expop.h (class type_operation): New.

25
gdb/expop.h
View File

@ -1445,6 +1445,31 @@ public:
{ return true; }
};
/* Implement the "typeof" operation. */
class typeof_operation
: public maybe_constant_operation<operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
if (noside == EVAL_SKIP)
return eval_skip_value (exp);
else if (noside == EVAL_AVOID_SIDE_EFFECTS)
return std::get<0> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
else
error (_("Attempt to use a type as an expression"));
}
enum exp_opcode opcode () const override
{ return OP_TYPEOF; }
};
} /* namespace expr */
#endif /* EXPOP_H */