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Implement the "&&" and "||" operators

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This implements the "&&" and "||" operators.

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

	* expop.h (class logical_and_operation)
	(class logical_or_operation): New.
	* eval.c (logical_and_operation::evaluate)
	(logical_or_operation::evaluate): New methods.
	* ax-gdb.c (logical_and_operation::do_generate_ax)
	(logical_or_operation::do_generate_ax): New methods.
This commit is contained in:
Tom Tromey
2021-03-08 07:27:57 -07:00
parent 2bc9b40ce1
commit 5019124b1d
4 changed files with 176 additions and 0 deletions
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63
gdb/eval.c
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@@ -2486,6 +2486,69 @@ multi_subscript_operation::evaluate (struct type *expect_type,
gdb::make_array_view (argvec, values.size ()));
}
value *
logical_and_operation::evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside)
{
value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
if (noside == EVAL_SKIP)
return eval_skip_value (exp);
value *arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
if (binop_user_defined_p (BINOP_LOGICAL_AND, arg1, arg2))
{
arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
return value_x_binop (arg1, arg2, BINOP_LOGICAL_AND, OP_NULL, noside);
}
else
{
int tem = value_logical_not (arg1);
if (!tem)
{
arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
tem = value_logical_not (arg2);
}
struct type *type = language_bool_type (exp->language_defn,
exp->gdbarch);
return value_from_longest (type, !tem);
}
}
value *
logical_or_operation::evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside)
{
value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
if (noside == EVAL_SKIP)
return eval_skip_value (exp);
value *arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
if (binop_user_defined_p (BINOP_LOGICAL_OR, arg1, arg2))
{
arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
return value_x_binop (arg1, arg2, BINOP_LOGICAL_OR, OP_NULL, noside);
}
else
{
int tem = value_logical_not (arg1);
if (tem)
{
arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
tem = value_logical_not (arg2);
}
struct type *type = language_bool_type (exp->language_defn,
exp->gdbarch);
return value_from_longest (type, !tem);
}
}
}
struct value *