gdb/m2-exp.h

   1 /* Definitions for Modula-2 expressions
   2
   3    Copyright (C) 2020 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef M2_EXP_H
  21 #define M2_EXP_H
  22
  23 #include "expop.h"
  24
  25 extern struct value *eval_op_m2_high (struct type *expect_type,
  26                                       struct expression *exp,
  27                                       enum noside noside,
  28                                       struct value *arg1);
  29 extern struct value *eval_op_m2_subscript (struct type *expect_type,
  30                                            struct expression *exp,
  31                                            enum noside noside,
  32                                            struct value *arg1,
  33                                            struct value *arg2);
  34
  35 namespace expr
  36 {
  37
  38 /* The Modula-2 "HIGH" operation.  */
  39 class m2_unop_high_operation
  40   : public tuple_holding_operation<operation_up>
  41 {
  42 public:
  43
  44   using tuple_holding_operation::tuple_holding_operation;
  45
  46   value *evaluate (struct type *expect_type,
  47                    struct expression *exp,
  48                    enum noside noside) override
  49   {
  50     value *arg1 = std::get<0> (m_storage)->evaluate_with_coercion (exp,
  51                                                                    noside);
  52     return eval_op_m2_high (expect_type, exp, noside, arg1);
  53   }
  54
  55   enum exp_opcode opcode () const override
  56   { return UNOP_HIGH; }
  57 };
  58
  59 /* Subscripting for Modula-2.  */
  60 class m2_binop_subscript_operation
  61   : public tuple_holding_operation<operation_up, operation_up>
  62 {
  63 public:
  64
  65   using tuple_holding_operation::tuple_holding_operation;
  66
  67   value *evaluate (struct type *expect_type,
  68                    struct expression *exp,
  69                    enum noside noside) override
  70   {
  71     value *arg1 = std::get<0> (m_storage)->evaluate_with_coercion (exp,
  72                                                                    noside);
  73     value *arg2 = std::get<1> (m_storage)->evaluate_with_coercion (exp,
  74                                                                    noside);
  75     return eval_op_m2_subscript (expect_type, exp, noside, arg1, arg2);
  76   }
  77
  78   enum exp_opcode opcode () const override
  79   { return BINOP_SUBSCRIPT; }
  80 };
  81
  82 } /* namespace expr */
  83
  84 #endif /* M2_EXP_H */