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Split out eval_op_rust_array

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This splits OP_ARRAY into a new function for future use.

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

	* rust-lang.c (eval_op_rust_array): New function.
	(rust_evaluate_subexp): Use it.
This commit is contained in:
Tom Tromey
2021-03-08 07:27:57 -07:00
parent 6fa9831f89
commit 051042333d
2 changed files with 34 additions and 20 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (eval_op_rust_array): New function.
(rust_evaluate_subexp): Use it.
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (eval_op_rust_complement): New function.

49
gdb/rust-lang.c
View File

@ -1354,6 +1354,34 @@ eval_op_rust_complement (struct type *expect_type, struct expression *exp,
return value_complement (value);
}
/* A helper function for OP_ARRAY. */
static struct value *
eval_op_rust_array (struct type *expect_type, struct expression *exp,
enum noside noside,
struct value *elt, struct value *ncopies)
{
int copies = value_as_long (ncopies);
if (copies < 0)
error (_("Array with negative number of elements"));
if (noside == EVAL_NORMAL)
{
int i;
std::vector<struct value *> eltvec (copies);
for (i = 0; i < copies; ++i)
eltvec[i] = elt;
return value_array (0, copies - 1, eltvec.data ());
}
else
{
struct type *arraytype
= lookup_array_range_type (value_type (elt), 0, copies - 1);
return allocate_value (arraytype);
}
}
/* evaluate_exp implementation for Rust. */
static struct value *
@ -1472,31 +1500,12 @@ rust_evaluate_subexp (struct type *expect_type, struct expression *exp,
case OP_RUST_ARRAY:
{
(*pos)++;
int copies;
struct value *elt;
struct value *ncopies;
elt = rust_evaluate_subexp (NULL, exp, pos, noside);
ncopies = rust_evaluate_subexp (NULL, exp, pos, noside);
copies = value_as_long (ncopies);
if (copies < 0)
error (_("Array with negative number of elements"));
if (noside == EVAL_NORMAL)
{
int i;
std::vector<struct value *> eltvec (copies);
for (i = 0; i < copies; ++i)
eltvec[i] = elt;
result = value_array (0, copies - 1, eltvec.data ());
}
else
{
struct type *arraytype
= lookup_array_range_type (value_type (elt), 0, copies - 1);
result = allocate_value (arraytype);
}
return eval_op_rust_array (expect_type, exp, noside, elt, ncopies);
}
break;