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/* Definitions for Ada 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 ADA_EXP_H
#define ADA_EXP_H
#include "expop.h"
extern struct value *ada_unop_neg (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1);
extern struct value *ada_atr_tag (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1);
extern struct value *ada_atr_size (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1);
extern struct value *ada_abs (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1);
extern struct value *ada_unop_in_range (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1, struct type *type);
extern struct value *ada_mult_binop (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1, struct value *arg2);
extern struct value *ada_equal_binop (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1, struct value *arg2);
extern struct value *ada_ternop_slice (struct expression *exp,
enum noside noside,
struct value *array,
struct value *low_bound_val,
struct value *high_bound_val);
extern struct value *ada_binop_in_bounds (struct expression *exp,
enum noside noside,
struct value *arg1,
struct value *arg2,
int n);
namespace expr
{
/* In Ada, some generic operations must be wrapped with a handler that
handles some Ada-specific type conversions. */
class ada_wrapped_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;
enum exp_opcode opcode () const override
{ return std::get<0> (m_storage)->opcode (); }
};
/* An Ada string constant. */
class ada_string_operation
: public string_operation
{
public:
using string_operation::string_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override;
};
/* The Ada TYPE'(EXP) construct. */
class ada_qual_operation
: public tuple_holding_operation<operation_up, struct type *>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override;
enum exp_opcode opcode () const override
{ return UNOP_QUAL; }
};
/* Ternary in-range operator. */
class ada_ternop_range_operation
: public tuple_holding_operation<operation_up, 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;
enum exp_opcode opcode () const override
{ return TERNOP_IN_RANGE; }
};
using ada_neg_operation = unop_operation<UNOP_NEG, ada_unop_neg>;
using ada_atr_tag_operation = unop_operation<OP_ATR_TAG, ada_atr_tag>;
using ada_atr_size_operation = unop_operation<OP_ATR_SIZE, ada_atr_size>;
using ada_abs_operation = unop_operation<UNOP_ABS, ada_abs>;
/* The in-range operation, given a type. */
class ada_unop_range_operation
: public tuple_holding_operation<operation_up, struct type *>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *val = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
return ada_unop_in_range (expect_type, exp, noside, UNOP_IN_RANGE,
val, std::get<1> (m_storage));
}
enum exp_opcode opcode () const override
{ return UNOP_IN_RANGE; }
};
/* The Ada + and - operators. */
class ada_binop_addsub_operation
: public tuple_holding_operation<enum exp_opcode, 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;
enum exp_opcode opcode () const override
{ return std::get<0> (m_storage); }
};
using ada_binop_mul_operation = binop_operation<BINOP_MUL, ada_mult_binop>;
using ada_binop_div_operation = binop_operation<BINOP_DIV, ada_mult_binop>;
using ada_binop_rem_operation = binop_operation<BINOP_REM, ada_mult_binop>;
using ada_binop_mod_operation = binop_operation<BINOP_MOD, ada_mult_binop>;
/* Implement the equal and not-equal operations for Ada. */
class ada_binop_equal_operation
: public tuple_holding_operation<enum exp_opcode, 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<1> (m_storage)->evaluate (nullptr, exp, noside);
value *arg2 = std::get<2> (m_storage)->evaluate (value_type (arg1),
exp, noside);
return ada_equal_binop (expect_type, exp, noside, std::get<0> (m_storage),
arg1, arg2);
}
enum exp_opcode opcode () const override
{ return std::get<0> (m_storage); }
};
/* Bitwise operators for Ada. */
template<enum exp_opcode OP>
class ada_bitwise_operation
: public maybe_constant_operation<operation_up, operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *lhs = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
value *rhs = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
value *result = eval_op_binary (expect_type, exp, noside, OP, lhs, rhs);
return value_cast (value_type (lhs), result);
}
enum exp_opcode opcode () const override
{ return OP; }
};
using ada_bitwise_and_operation = ada_bitwise_operation<BINOP_BITWISE_AND>;
using ada_bitwise_ior_operation = ada_bitwise_operation<BINOP_BITWISE_IOR>;
using ada_bitwise_xor_operation = ada_bitwise_operation<BINOP_BITWISE_XOR>;
/* Ada array- or string-slice operation. */
class ada_ternop_slice_operation
: public maybe_constant_operation<operation_up, operation_up, operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *array = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
value *low = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
value *high = std::get<2> (m_storage)->evaluate (nullptr, exp, noside);
return ada_ternop_slice (exp, noside, array, low, high);
}
enum exp_opcode opcode () const override
{ return TERNOP_SLICE; }
};
/* Implement BINOP_IN_BOUNDS for Ada. */
class ada_binop_in_bounds_operation
: public maybe_constant_operation<operation_up, operation_up, int>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
value *arg2 = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
return ada_binop_in_bounds (exp, noside, arg1, arg2,
std::get<2> (m_storage));
}
enum exp_opcode opcode () const override
{ return BINOP_IN_BOUNDS; }
};
} /* namespace expr */
#endif /* ADA_EXP_H */
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