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Add two simple Modula-2 operations

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This adds a couple of simple Modula-2 operations.

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

	* m2-lang.c (eval_op_m2_high, eval_op_m2_subscript): No longer
	static.
	* m2-exp.h: New file.
This commit is contained in:
Tom Tromey 2021-03-08 07:27:57 -07:00
parent 5947d337d6
commit 2bc9b40ce1
3 changed files with 93 additions and 2 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2021-03-08 Tom Tromey <tom@tromey.com>
* m2-lang.c (eval_op_m2_high, eval_op_m2_subscript): No longer
static.
* m2-exp.h: New file.
2021-03-08 Tom Tromey <tom@tromey.com>
* rust-lang.c (rust_aggregate_operation::evaluate): New method.

84
gdb/m2-exp.h Normal file
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@ -0,0 +1,84 @@
/* Definitions for Modula-2 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 M2_EXP_H
#define M2_EXP_H
#include "expop.h"
extern struct value *eval_op_m2_high (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1);
extern struct value *eval_op_m2_subscript (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1,
struct value *arg2);
namespace expr
{
/* The Modula-2 "HIGH" operation. */
class m2_unop_high_operation
: public tuple_holding_operation<operation_up>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *arg1 = std::get<0> (m_storage)->evaluate_with_coercion (exp,
noside);
return eval_op_m2_high (expect_type, exp, noside, arg1);
}
enum exp_opcode opcode () const override
{ return UNOP_HIGH; }
};
/* Subscripting for Modula-2. */
class m2_binop_subscript_operation
: public tuple_holding_operation<operation_up, operation_up>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *arg1 = std::get<0> (m_storage)->evaluate_with_coercion (exp,
noside);
value *arg2 = std::get<1> (m_storage)->evaluate_with_coercion (exp,
noside);
return eval_op_m2_subscript (expect_type, exp, noside, arg1, arg2);
}
enum exp_opcode opcode () const override
{ return BINOP_SUBSCRIPT; }
};
} /* namespace expr */
#endif /* M2_EXP_H */

5
gdb/m2-lang.c
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@ -28,10 +28,11 @@
#include "c-lang.h"
#include "valprint.h"
#include "gdbarch.h"
#include "m2-exp.h"
/* A helper function for UNOP_HIGH. */
static struct value *
struct value *
eval_op_m2_high (struct type *expect_type, struct expression *exp,
enum noside noside,
struct value *arg1)
@ -62,7 +63,7 @@ eval_op_m2_high (struct type *expect_type, struct expression *exp,
/* A helper function for BINOP_SUBSCRIPT. */
static struct value *
struct value *
eval_op_m2_subscript (struct type *expect_type, struct expression *exp,
enum noside noside,
struct value *arg1, struct value *arg2)