gdb/ada-exp.h

   1 /* Definitions for Ada 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 ADA_EXP_H
  21 #define ADA_EXP_H
  22
  23 #include "expop.h"
  24
  25 extern struct value *ada_unop_neg (struct type *expect_type,
  26                                    struct expression *exp,
  27                                    enum noside noside, enum exp_opcode op,
  28                                    struct value *arg1);
  29 extern struct value *ada_atr_tag (struct type *expect_type,
  30                                   struct expression *exp,
  31                                   enum noside noside, enum exp_opcode op,
  32                                   struct value *arg1);
  33 extern struct value *ada_atr_size (struct type *expect_type,
  34                                    struct expression *exp,
  35                                    enum noside noside, enum exp_opcode op,
  36                                    struct value *arg1);
  37 extern struct value *ada_abs (struct type *expect_type,
  38                               struct expression *exp,
  39                               enum noside noside, enum exp_opcode op,
  40                               struct value *arg1);
  41 extern struct value *ada_unop_in_range (struct type *expect_type,
  42                                         struct expression *exp,
  43                                         enum noside noside, enum exp_opcode op,
  44                                         struct value *arg1, struct type *type);
  45 extern struct value *ada_mult_binop (struct type *expect_type,
  46                                      struct expression *exp,
  47                                      enum noside noside, enum exp_opcode op,
  48                                      struct value *arg1, struct value *arg2);
  49 extern struct value *ada_equal_binop (struct type *expect_type,
  50                                       struct expression *exp,
  51                                       enum noside noside, enum exp_opcode op,
  52                                       struct value *arg1, struct value *arg2);
  53
  54 namespace expr
  55 {
  56
  57 /* In Ada, some generic operations must be wrapped with a handler that
  58    handles some Ada-specific type conversions.  */
  59 class ada_wrapped_operation
  60   : public tuple_holding_operation<operation_up>
  61 {
  62 public:
  63
  64   using tuple_holding_operation::tuple_holding_operation;
  65
  66   value *evaluate (struct type *expect_type,
  67                    struct expression *exp,
  68                    enum noside noside) override;
  69
  70   enum exp_opcode opcode () const override
  71   { return std::get<0> (m_storage)->opcode (); }
  72 };
  73
  74 /* An Ada string constant.  */
  75 class ada_string_operation
  76   : public string_operation
  77 {
  78 public:
  79
  80   using string_operation::string_operation;
  81
  82   value *evaluate (struct type *expect_type,
  83                    struct expression *exp,
  84                    enum noside noside) override;
  85 };
  86
  87 /* The Ada TYPE'(EXP) construct.  */
  88 class ada_qual_operation
  89   : public tuple_holding_operation<operation_up, struct type *>
  90 {
  91 public:
  92
  93   using tuple_holding_operation::tuple_holding_operation;
  94
  95   value *evaluate (struct type *expect_type,
  96                    struct expression *exp,
  97                    enum noside noside) override;
  98
  99   enum exp_opcode opcode () const override
 100   { return UNOP_QUAL; }
 101 };
 102
 103 /* Ternary in-range operator.  */
 104 class ada_ternop_range_operation
 105   : public tuple_holding_operation<operation_up, operation_up, operation_up>
 106 {
 107 public:
 108
 109   using tuple_holding_operation::tuple_holding_operation;
 110
 111   value *evaluate (struct type *expect_type,
 112                    struct expression *exp,
 113                    enum noside noside) override;
 114
 115   enum exp_opcode opcode () const override
 116   { return TERNOP_IN_RANGE; }
 117 };
 118
 119 using ada_neg_operation = unop_operation<UNOP_NEG, ada_unop_neg>;
 120 using ada_atr_tag_operation = unop_operation<OP_ATR_TAG, ada_atr_tag>;
 121 using ada_atr_size_operation = unop_operation<OP_ATR_SIZE, ada_atr_size>;
 122 using ada_abs_operation = unop_operation<UNOP_ABS, ada_abs>;
 123
 124 /* The in-range operation, given a type.  */
 125 class ada_unop_range_operation
 126   : public tuple_holding_operation<operation_up, struct type *>
 127 {
 128 public:
 129
 130   using tuple_holding_operation::tuple_holding_operation;
 131
 132   value *evaluate (struct type *expect_type,
 133                    struct expression *exp,
 134                    enum noside noside) override
 135   {
 136     value *val = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
 137     return ada_unop_in_range (expect_type, exp, noside, UNOP_IN_RANGE,
 138                               val, std::get<1> (m_storage));
 139   }
 140
 141   enum exp_opcode opcode () const override
 142   { return UNOP_IN_RANGE; }
 143 };
 144
 145 /* The Ada + and - operators.  */
 146 class ada_binop_addsub_operation
 147   : public tuple_holding_operation<enum exp_opcode, operation_up, operation_up>
 148 {
 149 public:
 150
 151   using tuple_holding_operation::tuple_holding_operation;
 152
 153   value *evaluate (struct type *expect_type,
 154                    struct expression *exp,
 155                    enum noside noside) override;
 156
 157   enum exp_opcode opcode () const override
 158   { return std::get<0> (m_storage); }
 159 };
 160
 161 using ada_binop_mul_operation = binop_operation<BINOP_MUL, ada_mult_binop>;
 162 using ada_binop_div_operation = binop_operation<BINOP_DIV, ada_mult_binop>;
 163 using ada_binop_rem_operation = binop_operation<BINOP_REM, ada_mult_binop>;
 164 using ada_binop_mod_operation = binop_operation<BINOP_MOD, ada_mult_binop>;
 165
 166 /* Implement the equal and not-equal operations for Ada.  */
 167 class ada_binop_equal_operation
 168   : public tuple_holding_operation<enum exp_opcode, operation_up, operation_up>
 169 {
 170 public:
 171
 172   using tuple_holding_operation::tuple_holding_operation;
 173
 174   value *evaluate (struct type *expect_type,
 175                    struct expression *exp,
 176                    enum noside noside) override
 177   {
 178     value *arg1 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
 179     value *arg2 = std::get<2> (m_storage)->evaluate (value_type (arg1),
 180                                                      exp, noside);
 181     return ada_equal_binop (expect_type, exp, noside, std::get<0> (m_storage),
 182                             arg1, arg2);
 183   }
 184
 185   enum exp_opcode opcode () const override
 186   { return std::get<0> (m_storage); }
 187 };
 188
 189 } /* namespace expr */
 190
 191 #endif /* ADA_EXP_H */