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Implement some Rust operations

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This implements some straightforward Rust operations, using existing
template classes.

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

	* rust-lang.c (eval_op_rust_complement, eval_op_rust_array): No
	longer static.  Add "opcode" parameter.
	(rust_evaluate_subexp): Update.
	* rust-exp.h: New file.
This commit is contained in:
Tom Tromey 2021-03-08 07:27:57 -07:00
parent 9dcd3e2957
commit 6fab435953
3 changed files with 63 additions and 5 deletions
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7
gdb/ChangeLog
View file

@ -1,3 +1,10 @@
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (eval_op_rust_complement, eval_op_rust_array): No
longer static. Add "opcode" parameter.
(rust_evaluate_subexp): Update.
* rust-exp.h: New file.
2021-03-08 Tom Tromey <tom@tromey.com>
* f-lang.c (eval_op_f_abs, eval_op_f_mod, eval_op_f_ceil)

47
gdb/rust-exp.h Normal file
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@ -0,0 +1,47 @@
/* Definitions for Rust expressions
Copyright (C) 2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef RUST_EXP_H
#define RUST_EXP_H
#include "expop.h"
extern struct value *eval_op_rust_complement (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode opcode,
struct value *value);
extern struct value *eval_op_rust_array (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode opcode,
struct value *ncopies,
struct value *elt);
namespace expr
{
using rust_unop_compl_operation = unop_operation<UNOP_COMPLEMENT,
eval_op_rust_complement>;
using rust_array_operation = binop_operation<OP_RUST_ARRAY,
eval_op_rust_array>;
} /* namespace expr */
#endif /* RUST_EXP_H */

14
gdb/rust-lang.c
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@ -39,6 +39,7 @@
#include <vector>
#include "cli/cli-style.h"
#include "parser-defs.h"
#include "rust-exp.h"
/* See rust-lang.h. */
@ -1339,9 +1340,10 @@ eval_op_rust_ind (struct type *expect_type, struct expression *exp,
/* A helper function for UNOP_COMPLEMENT. */
static struct value *
struct value *
eval_op_rust_complement (struct type *expect_type, struct expression *exp,
enum noside noside,
enum exp_opcode opcode,
struct value *value)
{
if (noside == EVAL_SKIP)
@ -1356,9 +1358,10 @@ eval_op_rust_complement (struct type *expect_type, struct expression *exp,
/* A helper function for OP_ARRAY. */
static struct value *
struct value *
eval_op_rust_array (struct type *expect_type, struct expression *exp,
enum noside noside,
enum exp_opcode opcode,
struct value *elt, struct value *ncopies)
{
int copies = value_as_long (ncopies);
@ -1505,8 +1508,9 @@ rust_evaluate_subexp (struct type *expect_type, struct expression *exp,
int *pos, enum noside noside)
{
struct value *result;
enum exp_opcode op = exp->elts[*pos].opcode;
switch (exp->elts[*pos].opcode)
switch (op)
{
case UNOP_IND:
{
@ -1528,7 +1532,7 @@ rust_evaluate_subexp (struct type *expect_type, struct expression *exp,
++*pos;
value = evaluate_subexp (nullptr, exp, pos, noside);
result = eval_op_rust_complement (expect_type, exp, noside, value);
result = eval_op_rust_complement (expect_type, exp, noside, op, value);
}
break;
@ -1621,7 +1625,7 @@ rust_evaluate_subexp (struct type *expect_type, struct expression *exp,
elt = rust_evaluate_subexp (NULL, exp, pos, noside);
ncopies = rust_evaluate_subexp (NULL, exp, pos, noside);
return eval_op_rust_array (expect_type, exp, noside, elt, ncopies);
return eval_op_rust_array (expect_type, exp, noside, op, elt, ncopies);
}
break;