/* Definitions for expressions in GDB
Copyright (C) 2020-2022 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 EXPOP_H
#define EXPOP_H
#include "block.h"
#include "c-lang.h"
#include "cp-abi.h"
#include "expression.h"
#include "objfiles.h"
#include "gdbsupport/traits.h"
#include "gdbsupport/enum-flags.h"
struct agent_expr;
struct axs_value;
extern void gen_expr_binop (struct expression *exp,
enum exp_opcode op,
expr::operation *lhs, expr::operation *rhs,
struct agent_expr *ax, struct axs_value *value);
extern void gen_expr_structop (struct expression *exp,
enum exp_opcode op,
expr::operation *lhs,
const char *name,
struct agent_expr *ax, struct axs_value *value);
extern void gen_expr_unop (struct expression *exp,
enum exp_opcode op,
expr::operation *lhs,
struct agent_expr *ax, struct axs_value *value);
extern struct value *eval_op_scope (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct type *type, const char *string);
extern struct value *eval_op_var_msym_value (struct type *expect_type,
struct expression *exp,
enum noside noside,
bool outermost_p,
bound_minimal_symbol msymbol);
extern struct value *eval_op_var_entry_value (struct type *expect_type,
struct expression *exp,
enum noside noside, symbol *sym);
extern struct value *eval_op_func_static_var (struct type *expect_type,
struct expression *exp,
enum noside noside,
value *func, const char *var);
extern struct value *eval_op_register (struct type *expect_type,
struct expression *exp,
enum noside noside, const char *name);
extern struct value *eval_op_ternop (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *array, struct value *low,
struct value *upper);
extern struct value *eval_op_structop_struct (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1,
const char *string);
extern struct value *eval_op_structop_ptr (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1,
const char *string);
extern struct value *eval_op_member (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1, struct value *arg2);
extern struct value *eval_op_add (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1, struct value *arg2);
extern struct value *eval_op_sub (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1, struct value *arg2);
extern struct value *eval_op_binary (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1, struct value *arg2);
extern struct value *eval_op_subscript (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_equal (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_notequal (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_less (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_gtr (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_geq (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_leq (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_repeat (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1,
struct value *arg2);
extern struct value *eval_op_plus (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_neg (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_complement (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_lognot (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_preinc (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_predec (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_postinc (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_postdec (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode op,
struct value *arg1);
extern struct value *eval_op_ind (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1);
extern struct value *eval_op_type (struct type *expect_type,
struct expression *exp,
enum noside noside, struct type *type);
extern struct value *eval_op_alignof (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1);
extern struct value *eval_op_memval (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct value *arg1, struct type *type);
extern struct value *eval_binop_assign_modify (struct type *expect_type,
struct expression *exp,
enum noside noside,
enum exp_opcode op,
struct value *arg1,
struct value *arg2);
namespace expr
{
class ada_component;
/* The check_objfile overloads are used to check whether a particular
component of some operation references an objfile. The passed-in
objfile will never be a debug objfile. */
/* See if EXP_OBJFILE matches OBJFILE. */
static inline bool
check_objfile (struct objfile *exp_objfile, struct objfile *objfile)
{
if (exp_objfile->separate_debug_objfile_backlink)
exp_objfile = exp_objfile->separate_debug_objfile_backlink;
return exp_objfile == objfile;
}
static inline bool
check_objfile (struct type *type, struct objfile *objfile)
{
struct objfile *ty_objfile = type->objfile_owner ();
if (ty_objfile != nullptr)
return check_objfile (ty_objfile, objfile);
return false;
}
static inline bool
check_objfile (struct symbol *sym, struct objfile *objfile)
{
return check_objfile (sym->objfile (), objfile);
}
static inline bool
check_objfile (const struct block *block, struct objfile *objfile)
{
return check_objfile (block_objfile (block), objfile);
}
static inline bool
check_objfile (const block_symbol &sym, struct objfile *objfile)
{
return (check_objfile (sym.symbol, objfile)
|| check_objfile (sym.block, objfile));
}
static inline bool
check_objfile (bound_minimal_symbol minsym, struct objfile *objfile)
{
return check_objfile (minsym.objfile, objfile);
}
static inline bool
check_objfile (internalvar *ivar, struct objfile *objfile)
{
return false;
}
static inline bool
check_objfile (const std::string &str, struct objfile *objfile)
{
return false;
}
static inline bool
check_objfile (const operation_up &op, struct objfile *objfile)
{
return op->uses_objfile (objfile);
}
static inline bool
check_objfile (enum exp_opcode val, struct objfile *objfile)
{
return false;
}
static inline bool
check_objfile (ULONGEST val, struct objfile *objfile)
{
return false;
}
template<typename T>
static inline bool
check_objfile (enum_flags<T> val, struct objfile *objfile)
{
return false;
}
template<typename T>
static inline bool
check_objfile (const std::vector<T> &collection, struct objfile *objfile)
{
for (const auto &item : collection)
{
if (check_objfile (item, objfile))
return true;
}
return false;
}
template<typename S, typename T>
static inline bool
check_objfile (const std::pair<S, T> &item, struct objfile *objfile)
{
return (check_objfile (item.first, objfile)
|| check_objfile (item.second, objfile));
}
extern bool check_objfile (const std::unique_ptr<ada_component> &comp,
struct objfile *objfile);
static inline void
dump_for_expression (struct ui_file *stream, int depth,
const operation_up &op)
{
op->dump (stream, depth);
}
extern void dump_for_expression (struct ui_file *stream, int depth,
enum exp_opcode op);
extern void dump_for_expression (struct ui_file *stream, int depth,
const std::string &str);
extern void dump_for_expression (struct ui_file *stream, int depth,
struct type *type);
extern void dump_for_expression (struct ui_file *stream, int depth,
CORE_ADDR addr);
extern void dump_for_expression (struct ui_file *stream, int depth,
internalvar *ivar);
extern void dump_for_expression (struct ui_file *stream, int depth,
symbol *sym);
extern void dump_for_expression (struct ui_file *stream, int depth,
const block_symbol &sym);
extern void dump_for_expression (struct ui_file *stream, int depth,
bound_minimal_symbol msym);
extern void dump_for_expression (struct ui_file *stream, int depth,
const block *bl);
extern void dump_for_expression (struct ui_file *stream, int depth,
type_instance_flags flags);
extern void dump_for_expression (struct ui_file *stream, int depth,
enum c_string_type_values flags);
extern void dump_for_expression (struct ui_file *stream, int depth,
enum range_flag flags);
extern void dump_for_expression (struct ui_file *stream, int depth,
const std::unique_ptr<ada_component> &comp);
template<typename T>
void
dump_for_expression (struct ui_file *stream, int depth,
const std::vector<T> &vals)
{
gdb_printf (stream, _("%*sVector:\n"), depth, "");
for (auto &item : vals)
dump_for_expression (stream, depth + 1, item);
}
template<typename X, typename Y>
void
dump_for_expression (struct ui_file *stream, int depth,
const std::pair<X, Y> &vals)
{
dump_for_expression (stream, depth, vals.first);
dump_for_expression (stream, depth, vals.second);
}
/* Base class for most concrete operations. This class holds data,
specified via template parameters, and supplies generic
implementations of the 'dump' and 'uses_objfile' methods. */
template<typename... Arg>
class tuple_holding_operation : public operation
{
public:
explicit tuple_holding_operation (Arg... args)
: m_storage (std::forward<Arg> (args)...)
{
}
DISABLE_COPY_AND_ASSIGN (tuple_holding_operation);
bool uses_objfile (struct objfile *objfile) const override
{
return do_check_objfile<0, Arg...> (objfile, m_storage);
}
void dump (struct ui_file *stream, int depth) const override
{
dump_for_expression (stream, depth, opcode ());
do_dump<0, Arg...> (stream, depth + 1, m_storage);
}
protected:
/* Storage for the data. */
std::tuple<Arg...> m_storage;
private:
/* do_dump does the work of dumping the data. */
template<int I, typename... T>
typename std::enable_if<I == sizeof... (T), void>::type
do_dump (struct ui_file *stream, int depth, const std::tuple<T...> &value)
const
{
}
template<int I, typename... T>
typename std::enable_if<I < sizeof... (T), void>::type
do_dump (struct ui_file *stream, int depth, const std::tuple<T...> &value)
const
{
dump_for_expression (stream, depth, std::get<I> (value));
do_dump<I + 1, T...> (stream, depth, value);
}
/* do_check_objfile does the work of checking whether this object
refers to OBJFILE. */
template<int I, typename... T>
typename std::enable_if<I == sizeof... (T), bool>::type
do_check_objfile (struct objfile *objfile, const std::tuple<T...> &value)
const
{
return false;
}
template<int I, typename... T>
typename std::enable_if<I < sizeof... (T), bool>::type
do_check_objfile (struct objfile *objfile, const std::tuple<T...> &value)
const
{
if (check_objfile (std::get<I> (value), objfile))
return true;
return do_check_objfile<I + 1, T...> (objfile, value);
}
};
/* The check_constant overloads are used to decide whether a given
concrete operation is a constant. This is done by checking the
operands. */
static inline bool
check_constant (const operation_up &item)
{
return item->constant_p ();
}
static inline bool
check_constant (bound_minimal_symbol msym)
{
return false;
}
static inline bool
check_constant (struct type *type)
{
return true;
}
static inline bool
check_constant (const struct block *block)
{
return true;
}
static inline bool
check_constant (const std::string &str)
{
return true;
}
static inline bool
check_constant (ULONGEST cst)
{
return true;
}
static inline bool
check_constant (struct symbol *sym)
{
enum address_class sc = sym->aclass ();
return (sc == LOC_BLOCK
|| sc == LOC_CONST
|| sc == LOC_CONST_BYTES
|| sc == LOC_LABEL);
}
static inline bool
check_constant (const block_symbol &sym)
{
/* We know the block is constant, so we only need to check the
symbol. */
return check_constant (sym.symbol);
}
template<typename T>
static inline bool
check_constant (const std::vector<T> &collection)
{
for (const auto &item : collection)
if (!check_constant (item))
return false;
return true;
}
template<typename S, typename T>
static inline bool
check_constant (const std::pair<S, T> &item)
{
return check_constant (item.first) && check_constant (item.second);
}
/* Base class for concrete operations. This class supplies an
implementation of 'constant_p' that works by checking the
operands. */
template<typename... Arg>
class maybe_constant_operation
: public tuple_holding_operation<Arg...>
{
public:
using tuple_holding_operation<Arg...>::tuple_holding_operation;
bool constant_p () const override
{
return do_check_constant<0, Arg...> (this->m_storage);
}
private:
template<int I, typename... T>
typename std::enable_if<I == sizeof... (T), bool>::type
do_check_constant (const std::tuple<T...> &value) const
{
return true;
}
template<int I, typename... T>
typename std::enable_if<I < sizeof... (T), bool>::type
do_check_constant (const std::tuple<T...> &value) const
{
if (!check_constant (std::get<I> (value)))
return false;
return do_check_constant<I + 1, T...> (value);
}
};
/* A floating-point constant. The constant is encoded in the target
format. */
typedef std::array<gdb_byte, 16> float_data;
/* An operation that holds a floating-point constant of a given
type.
This does not need the facilities provided by
tuple_holding_operation, so it does not use it. */
class float_const_operation
: public operation
{
public:
float_const_operation (struct type *type, float_data data)
: m_type (type),
m_data (data)
{
}
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return value_from_contents (m_type, m_data.data ());
}
enum exp_opcode opcode () const override
{ return OP_FLOAT; }
bool constant_p () const override
{ return true; }
void dump (struct ui_file *stream, int depth) const override;
private:
struct type *m_type;
float_data m_data;
};
class scope_operation
: public maybe_constant_operation<struct type *, std::string>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return eval_op_scope (expect_type, exp, noside,
std::get<0> (m_storage),
std::get<1> (m_storage).c_str ());
}
value *evaluate_for_address (struct expression *exp,
enum noside noside) override;
value *evaluate_funcall (struct type *expect_type,
struct expression *exp,
enum noside noside,
const std::vector<operation_up> &args) override;
enum exp_opcode opcode () const override
{ return OP_SCOPE; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* Compute the value of a variable. */
class var_value_operation
: public maybe_constant_operation<block_symbol>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override;
value *evaluate_with_coercion (struct expression *exp,
enum noside noside) override;
value *evaluate_for_sizeof (struct expression *exp, enum noside noside)
override;
value *evaluate_for_cast (struct type *expect_type,
struct expression *exp,
enum noside noside) override;
value *evaluate_for_address (struct expression *exp, enum noside noside)
override;
value *evaluate_funcall (struct type *expect_type,
struct expression *exp,
enum noside noside,
const std::vector<operation_up> &args) override;
enum exp_opcode opcode () const override
{ return OP_VAR_VALUE; }
/* Return the symbol referenced by this object. */
symbol *get_symbol () const
{
return std::get<0> (m_storage).symbol;
}
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
class long_const_operation
: public tuple_holding_operation<struct type *, LONGEST>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return value_from_longest (std::get<0> (m_storage),
std::get<1> (m_storage));
}
enum exp_opcode opcode () const override
{ return OP_LONG; }
bool constant_p () const override
{ return true; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
class var_msym_value_operation
: public maybe_constant_operation<bound_minimal_symbol>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return eval_op_var_msym_value (expect_type, exp, noside, m_outermost,
std::get<0> (m_storage));
}
value *evaluate_for_sizeof (struct expression *exp, enum noside noside)
override;
value *evaluate_for_address (struct expression *exp, enum noside noside)
override;
value *evaluate_for_cast (struct type *expect_type,
struct expression *exp,
enum noside noside) override;
value *evaluate_funcall (struct type *expect_type,
struct expression *exp,
enum noside noside,
const std::vector<operation_up> &args) override
{
const char *name = std::get<0> (m_storage).minsym->print_name ();
return operation::evaluate_funcall (expect_type, exp, noside, name, args);
}
enum exp_opcode opcode () const override
{ return OP_VAR_MSYM_VALUE; }
void set_outermost () override
{
m_outermost = true;
}
protected:
/* True if this is the outermost operation in the expression. */
bool m_outermost = false;
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
class var_entry_value_operation
: public tuple_holding_operation<symbol *>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return eval_op_var_entry_value (expect_type, exp, noside,
std::get<0> (m_storage));
}
enum exp_opcode opcode () const override
{ return OP_VAR_ENTRY_VALUE; }
};
class func_static_var_operation
: public maybe_constant_operation<operation_up, std::string>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *func = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
return eval_op_func_static_var (expect_type, exp, noside, func,
std::get<1> (m_storage).c_str ());
}
enum exp_opcode opcode () const override
{ return OP_FUNC_STATIC_VAR; }
};
class last_operation
: public tuple_holding_operation<int>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return access_value_history (std::get<0> (m_storage));
}
enum exp_opcode opcode () const override
{ return OP_LAST; }
};
class register_operation
: public tuple_holding_operation<std::string>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return eval_op_register (expect_type, exp, noside,
std::get<0> (m_storage).c_str ());
}
enum exp_opcode opcode () const override
{ return OP_REGISTER; }
/* Return the name of the register. */
const char *get_name () const
{
return std::get<0> (m_storage).c_str ();
}
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
class bool_operation
: public tuple_holding_operation<bool>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
struct type *type = language_bool_type (exp->language_defn, exp->gdbarch);
return value_from_longest (type, std::get<0> (m_storage));
}
enum exp_opcode opcode () const override
{ return OP_BOOL; }
bool constant_p () const override
{ return true; }
};
class internalvar_operation
: public tuple_holding_operation<internalvar *>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return value_of_internalvar (exp->gdbarch,
std::get<0> (m_storage));
}
internalvar *get_internalvar () const
{
return std::get<0> (m_storage);
}
enum exp_opcode opcode () const override
{ return OP_INTERNALVAR; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
class string_operation
: public tuple_holding_operation<std::string>
{
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 OP_STRING; }
};
class 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
{
struct value *array
= std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
struct value *low
= std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
struct value *upper
= std::get<2> (m_storage)->evaluate (nullptr, exp, noside);
return eval_op_ternop (expect_type, exp, noside, array, low, upper);
}
enum exp_opcode opcode () const override
{ return TERNOP_SLICE; }
};
class ternop_cond_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
{
struct value *val
= std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
if (value_logical_not (val))
return std::get<2> (m_storage)->evaluate (nullptr, exp, noside);
return std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
}
enum exp_opcode opcode () const override
{ return TERNOP_COND; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
class complex_operation
: public maybe_constant_operation<operation_up, operation_up, struct type *>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *real = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
value *imag = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
return value_literal_complex (real, imag,
std::get<2> (m_storage));
}
enum exp_opcode opcode () const override
{ return OP_COMPLEX; }
};
class structop_base_operation
: public tuple_holding_operation<operation_up, std::string>
{
public:
/* Used for completion. Return the field name. */
const std::string &get_string () const
{
return std::get<1> (m_storage);
}
value *evaluate_funcall (struct type *expect_type,
struct expression *exp,
enum noside noside,
const std::vector<operation_up> &args) override;
/* Try to complete this operation in the context of EXP. TRACKER is
the completion tracker to update. Return true if completion was
possible, false otherwise. */
virtual bool complete (struct expression *exp, completion_tracker &tracker)
{
return complete (exp, tracker, "");
}
protected:
/* Do the work of the public 'complete' method. PREFIX is prepended
to each result. */
bool complete (struct expression *exp, completion_tracker &tracker,
const char *prefix);
using tuple_holding_operation::tuple_holding_operation;
};
class structop_operation
: public structop_base_operation
{
public:
using structop_base_operation::structop_base_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 eval_op_structop_struct (expect_type, exp, noside, val,
std::get<1> (m_storage).c_str ());
}
enum exp_opcode opcode () const override
{ return STRUCTOP_STRUCT; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_structop (exp, STRUCTOP_STRUCT,
std::get<0> (this->m_storage).get (),
std::get<1> (this->m_storage).c_str (),
ax, value);
}
};
class structop_ptr_operation
: public structop_base_operation
{
public:
using structop_base_operation::structop_base_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 eval_op_structop_ptr (expect_type, exp, noside, val,
std::get<1> (m_storage).c_str ());
}
enum exp_opcode opcode () const override
{ return STRUCTOP_PTR; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_structop (exp, STRUCTOP_PTR,
std::get<0> (this->m_storage).get (),
std::get<1> (this->m_storage).c_str (),
ax, value);
}
};
class structop_member_base
: public tuple_holding_operation<operation_up, operation_up>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate_funcall (struct type *expect_type,
struct expression *exp,
enum noside noside,
const std::vector<operation_up> &args) override;
};
class structop_member_operation
: public structop_member_base
{
public:
using structop_member_base::structop_member_base;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *lhs
= std::get<0> (m_storage)->evaluate_for_address (exp, noside);
value *rhs
= std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
return eval_op_member (expect_type, exp, noside, lhs, rhs);
}
enum exp_opcode opcode () const override
{ return STRUCTOP_MEMBER; }
};
class structop_mptr_operation
: public structop_member_base
{
public:
using structop_member_base::structop_member_base;
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);
return eval_op_member (expect_type, exp, noside, lhs, rhs);
}
enum exp_opcode opcode () const override
{ return STRUCTOP_MPTR; }
};
class concat_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_with_coercion (exp, noside);
value *rhs
= std::get<1> (m_storage)->evaluate_with_coercion (exp, noside);
return value_concat (lhs, rhs);
}
enum exp_opcode opcode () const override
{ return BINOP_CONCAT; }
};
class add_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_with_coercion (exp, noside);
value *rhs
= std::get<1> (m_storage)->evaluate_with_coercion (exp, noside);
return eval_op_add (expect_type, exp, noside, lhs, rhs);
}
enum exp_opcode opcode () const override
{ return BINOP_ADD; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_binop (exp, BINOP_ADD,
std::get<0> (this->m_storage).get (),
std::get<1> (this->m_storage).get (),
ax, value);
}
};
class sub_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_with_coercion (exp, noside);
value *rhs
= std::get<1> (m_storage)->evaluate_with_coercion (exp, noside);
return eval_op_sub (expect_type, exp, noside, lhs, rhs);
}
enum exp_opcode opcode () const override
{ return BINOP_SUB; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_binop (exp, BINOP_SUB,
std::get<0> (this->m_storage).get (),
std::get<1> (this->m_storage).get (),
ax, value);
}
};
typedef struct value *binary_ftype (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1, struct value *arg2);
template<enum exp_opcode OP, binary_ftype FUNC>
class binop_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);
return FUNC (expect_type, exp, noside, OP, lhs, rhs);
}
enum exp_opcode opcode () const override
{ return OP; }
};
template<enum exp_opcode OP, binary_ftype FUNC>
class usual_ax_binop_operation
: public binop_operation<OP, FUNC>
{
public:
using binop_operation<OP, FUNC>::binop_operation;
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_binop (exp, OP,
std::get<0> (this->m_storage).get (),
std::get<1> (this->m_storage).get (),
ax, value);
}
};
using exp_operation = binop_operation<BINOP_EXP, eval_op_binary>;
using intdiv_operation = binop_operation<BINOP_INTDIV, eval_op_binary>;
using mod_operation = binop_operation<BINOP_MOD, eval_op_binary>;
using mul_operation = usual_ax_binop_operation<BINOP_MUL, eval_op_binary>;
using div_operation = usual_ax_binop_operation<BINOP_DIV, eval_op_binary>;
using rem_operation = usual_ax_binop_operation<BINOP_REM, eval_op_binary>;
using lsh_operation = usual_ax_binop_operation<BINOP_LSH, eval_op_binary>;
using rsh_operation = usual_ax_binop_operation<BINOP_RSH, eval_op_binary>;
using bitwise_and_operation
= usual_ax_binop_operation<BINOP_BITWISE_AND, eval_op_binary>;
using bitwise_ior_operation
= usual_ax_binop_operation<BINOP_BITWISE_IOR, eval_op_binary>;
using bitwise_xor_operation
= usual_ax_binop_operation<BINOP_BITWISE_XOR, eval_op_binary>;
class subscript_operation
: public usual_ax_binop_operation<BINOP_SUBSCRIPT, eval_op_subscript>
{
public:
using usual_ax_binop_operation<BINOP_SUBSCRIPT,
eval_op_subscript>::usual_ax_binop_operation;
value *evaluate_for_sizeof (struct expression *exp,
enum noside noside) override;
};
/* Implementation of comparison operations. */
template<enum exp_opcode OP, binary_ftype FUNC>
class comparison_operation
: public usual_ax_binop_operation<OP, FUNC>
{
public:
using usual_ax_binop_operation<OP, FUNC>::usual_ax_binop_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *lhs
= std::get<0> (this->m_storage)->evaluate (nullptr, exp, noside);
value *rhs
= std::get<1> (this->m_storage)->evaluate (value_type (lhs), exp,
noside);
return FUNC (expect_type, exp, noside, OP, lhs, rhs);
}
};
class equal_operation
: public comparison_operation<BINOP_EQUAL, eval_op_equal>
{
public:
using comparison_operation::comparison_operation;
operation *get_lhs () const
{
return std::get<0> (m_storage).get ();
}
operation *get_rhs () const
{
return std::get<1> (m_storage).get ();
}
};
using notequal_operation
= comparison_operation<BINOP_NOTEQUAL, eval_op_notequal>;
using less_operation = comparison_operation<BINOP_LESS, eval_op_less>;
using gtr_operation = comparison_operation<BINOP_GTR, eval_op_gtr>;
using geq_operation = comparison_operation<BINOP_GEQ, eval_op_geq>;
using leq_operation = comparison_operation<BINOP_LEQ, eval_op_leq>;
/* Implement the GDB '@' repeat operator. */
class repeat_operation
: public binop_operation<BINOP_REPEAT, eval_op_repeat>
{
using binop_operation<BINOP_REPEAT, eval_op_repeat>::binop_operation;
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* C-style comma operator. */
class comma_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
{
/* The left-hand-side is only evaluated for side effects, so don't
bother in other modes. */
if (noside == EVAL_NORMAL)
std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
return std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
}
enum exp_opcode opcode () const override
{ return BINOP_COMMA; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
typedef struct value *unary_ftype (struct type *expect_type,
struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1);
/* Base class for unary operations. */
template<enum exp_opcode OP, unary_ftype FUNC>
class unop_operation
: public maybe_constant_operation<operation_up>
{
public:
using maybe_constant_operation::maybe_constant_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 FUNC (expect_type, exp, noside, OP, val);
}
enum exp_opcode opcode () const override
{ return OP; }
};
/* Unary operations that can also be turned into agent expressions in
the "usual" way. */
template<enum exp_opcode OP, unary_ftype FUNC>
class usual_ax_unop_operation
: public unop_operation<OP, FUNC>
{
using unop_operation<OP, FUNC>::unop_operation;
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_unop (exp, OP,
std::get<0> (this->m_storage).get (),
ax, value);
}
};
using unary_plus_operation = usual_ax_unop_operation<UNOP_PLUS, eval_op_plus>;
using unary_neg_operation = usual_ax_unop_operation<UNOP_NEG, eval_op_neg>;
using unary_complement_operation
= usual_ax_unop_operation<UNOP_COMPLEMENT, eval_op_complement>;
using unary_logical_not_operation
= usual_ax_unop_operation<UNOP_LOGICAL_NOT, eval_op_lognot>;
/* Handle pre- and post- increment and -decrement. */
template<enum exp_opcode OP, unary_ftype FUNC>
class unop_incr_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 *val = std::get<0> (m_storage)->evaluate (expect_type, exp, noside);
return FUNC (expect_type, exp, noside, OP, val);
}
enum exp_opcode opcode () const override
{ return OP; }
};
using preinc_operation
= unop_incr_operation<UNOP_PREINCREMENT, eval_op_preinc>;
using predec_operation
= unop_incr_operation<UNOP_PREDECREMENT, eval_op_predec>;
using postinc_operation
= unop_incr_operation<UNOP_POSTINCREMENT, eval_op_postinc>;
using postdec_operation
= unop_incr_operation<UNOP_POSTDECREMENT, eval_op_postdec>;
/* Base class for implementations of UNOP_IND. */
class unop_ind_base_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
{
if (expect_type != nullptr && expect_type->code () == TYPE_CODE_PTR)
expect_type = check_typedef (expect_type)->target_type ();
value *val = std::get<0> (m_storage)->evaluate (expect_type, exp, noside);
return eval_op_ind (expect_type, exp, noside, val);
}
value *evaluate_for_address (struct expression *exp,
enum noside noside) override;
value *evaluate_for_sizeof (struct expression *exp,
enum noside noside) override;
enum exp_opcode opcode () const override
{ return UNOP_IND; }
};
/* Ordinary UNOP_IND implementation. */
class unop_ind_operation
: public unop_ind_base_operation
{
public:
using unop_ind_base_operation::unop_ind_base_operation;
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_unop (exp, UNOP_IND,
std::get<0> (this->m_storage).get (),
ax, value);
}
};
/* Implement OP_TYPE. */
class type_operation
: public tuple_holding_operation<struct type *>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return eval_op_type (expect_type, exp, noside, std::get<0> (m_storage));
}
enum exp_opcode opcode () const override
{ return OP_TYPE; }
bool constant_p () const override
{ return true; }
};
/* Implement the "typeof" operation. */
class typeof_operation
: public maybe_constant_operation<operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
if (noside == EVAL_AVOID_SIDE_EFFECTS)
return std::get<0> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
else
error (_("Attempt to use a type as an expression"));
}
enum exp_opcode opcode () const override
{ return OP_TYPEOF; }
};
/* Implement 'decltype'. */
class decltype_operation
: public maybe_constant_operation<operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
if (noside == EVAL_AVOID_SIDE_EFFECTS)
{
value *result
= std::get<0> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
enum exp_opcode sub_op = std::get<0> (m_storage)->opcode ();
if (sub_op == BINOP_SUBSCRIPT
|| sub_op == STRUCTOP_MEMBER
|| sub_op == STRUCTOP_MPTR
|| sub_op == UNOP_IND
|| sub_op == STRUCTOP_STRUCT
|| sub_op == STRUCTOP_PTR
|| sub_op == OP_SCOPE)
{
struct type *type = value_type (result);
if (!TYPE_IS_REFERENCE (type))
{
type = lookup_lvalue_reference_type (type);
result = allocate_value (type);
}
}
return result;
}
else
error (_("Attempt to use a type as an expression"));
}
enum exp_opcode opcode () const override
{ return OP_DECLTYPE; }
};
/* Implement 'typeid'. */
class typeid_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 sub_op = std::get<0> (m_storage)->opcode ();
enum noside sub_noside
= ((sub_op == OP_TYPE || sub_op == OP_DECLTYPE || sub_op == OP_TYPEOF)
? EVAL_AVOID_SIDE_EFFECTS
: noside);
value *result = std::get<0> (m_storage)->evaluate (nullptr, exp,
sub_noside);
if (noside != EVAL_NORMAL)
return allocate_value (cplus_typeid_type (exp->gdbarch));
return cplus_typeid (result);
}
enum exp_opcode opcode () const override
{ return OP_TYPEID; }
};
/* Implement the address-of operation. */
class unop_addr_operation
: public maybe_constant_operation<operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
/* C++: check for and handle pointer to members. */
return std::get<0> (m_storage)->evaluate_for_address (exp, noside);
}
enum exp_opcode opcode () const override
{ return UNOP_ADDR; }
/* Return the subexpression. */
const operation_up &get_expression () const
{
return std::get<0> (m_storage);
}
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override
{
gen_expr_unop (exp, UNOP_ADDR,
std::get<0> (this->m_storage).get (),
ax, value);
}
};
/* Implement 'sizeof'. */
class unop_sizeof_operation
: public maybe_constant_operation<operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return std::get<0> (m_storage)->evaluate_for_sizeof (exp, noside);
}
enum exp_opcode opcode () const override
{ return UNOP_SIZEOF; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* Implement 'alignof'. */
class unop_alignof_operation
: public maybe_constant_operation<operation_up>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
value *val = std::get<0> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
return eval_op_alignof (expect_type, exp, noside, val);
}
enum exp_opcode opcode () const override
{ return UNOP_ALIGNOF; }
};
/* Implement UNOP_MEMVAL. */
class unop_memval_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 (expect_type, exp, noside);
return eval_op_memval (expect_type, exp, noside, val,
std::get<1> (m_storage));
}
value *evaluate_for_sizeof (struct expression *exp,
enum noside noside) override;
value *evaluate_for_address (struct expression *exp,
enum noside noside) override;
enum exp_opcode opcode () const override
{ return UNOP_MEMVAL; }
/* Return the type referenced by this object. */
struct type *get_type () const
{
return std::get<1> (m_storage);
}
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* Implement UNOP_MEMVAL_TYPE. */
class unop_memval_type_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 *typeval
= std::get<0> (m_storage)->evaluate (expect_type, exp,
EVAL_AVOID_SIDE_EFFECTS);
struct type *type = value_type (typeval);
value *val = std::get<1> (m_storage)->evaluate (expect_type, exp, noside);
return eval_op_memval (expect_type, exp, noside, val, type);
}
value *evaluate_for_sizeof (struct expression *exp,
enum noside noside) override;
value *evaluate_for_address (struct expression *exp,
enum noside noside) override;
enum exp_opcode opcode () const override
{ return UNOP_MEMVAL_TYPE; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* Implement the 'this' expression. */
class op_this_operation
: public tuple_holding_operation<>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return value_of_this (exp->language_defn);
}
enum exp_opcode opcode () const override
{ return OP_THIS; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* Implement the "type instance" operation. */
class type_instance_operation
: public tuple_holding_operation<type_instance_flags, std::vector<type *>,
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 TYPE_INSTANCE; }
};
/* The assignment operator. */
class assign_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 *lhs = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
/* Special-case assignments where the left-hand-side is a
convenience variable -- in these, don't bother setting an
expected type. This avoids a weird case where re-assigning a
string or array to an internal variable could error with "Too
many array elements". */
struct type *xtype = (VALUE_LVAL (lhs) == lval_internalvar
? nullptr
: value_type (lhs));
value *rhs = std::get<1> (m_storage)->evaluate (xtype, exp, noside);
if (noside == EVAL_AVOID_SIDE_EFFECTS)
return lhs;
if (binop_user_defined_p (BINOP_ASSIGN, lhs, rhs))
return value_x_binop (lhs, rhs, BINOP_ASSIGN, OP_NULL, noside);
else
return value_assign (lhs, rhs);
}
enum exp_opcode opcode () const override
{ return BINOP_ASSIGN; }
/* Return the left-hand-side of the assignment. */
operation *get_lhs () const
{
return std::get<0> (m_storage).get ();
}
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* Assignment with modification, like "+=". */
class assign_modify_operation
: public tuple_holding_operation<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 *lhs = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
value *rhs = std::get<2> (m_storage)->evaluate (expect_type, exp, noside);
return eval_binop_assign_modify (expect_type, exp, noside,
std::get<0> (m_storage), lhs, rhs);
}
enum exp_opcode opcode () const override
{ return BINOP_ASSIGN_MODIFY; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* Not a cast! Extract a value of a given type from the contents of a
value. The new value is extracted from the least significant bytes
of the old value. The new value's type must be no bigger than the
old values type. */
class unop_extract_operation
: public maybe_constant_operation<operation_up, struct type *>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type, struct expression *exp,
enum noside noside) override;
enum exp_opcode opcode () const override
{ return UNOP_EXTRACT; }
/* Return the type referenced by this object. */
struct type *get_type () const
{
return std::get<1> (m_storage);
}
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type) override;
};
/* A type cast. */
class unop_cast_operation
: public maybe_constant_operation<operation_up, struct type *>
{
public:
using maybe_constant_operation::maybe_constant_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return std::get<0> (m_storage)->evaluate_for_cast (std::get<1> (m_storage),
exp, noside);
}
enum exp_opcode opcode () const override
{ return UNOP_CAST; }
/* Return the type referenced by this object. */
struct type *get_type () const
{
return std::get<1> (m_storage);
}
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* A cast, but the type comes from an expression, not a "struct
type". */
class unop_cast_type_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 *val = std::get<0> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
return std::get<1> (m_storage)->evaluate_for_cast (value_type (val),
exp, noside);
}
enum exp_opcode opcode () const override
{ return UNOP_CAST_TYPE; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
typedef value *cxx_cast_ftype (struct type *, value *);
/* This implements dynamic_cast and reinterpret_cast. static_cast and
const_cast are handled by the ordinary case operations. */
template<exp_opcode OP, cxx_cast_ftype FUNC>
class cxx_cast_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 *val = std::get<0> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
struct type *type = value_type (val);
value *rhs = std::get<1> (m_storage)->evaluate (type, exp, noside);
return FUNC (type, rhs);
}
enum exp_opcode opcode () const override
{ return OP; }
};
using dynamic_cast_operation = cxx_cast_operation<UNOP_DYNAMIC_CAST,
value_dynamic_cast>;
using reinterpret_cast_operation = cxx_cast_operation<UNOP_REINTERPRET_CAST,
value_reinterpret_cast>;
/* Multi-dimensional subscripting. */
class multi_subscript_operation
: public tuple_holding_operation<operation_up, std::vector<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 MULTI_SUBSCRIPT; }
};
/* The "&&" operator. */
class logical_and_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;
enum exp_opcode opcode () const override
{ return BINOP_LOGICAL_AND; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* The "||" operator. */
class logical_or_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;
enum exp_opcode opcode () const override
{ return BINOP_LOGICAL_OR; }
protected:
void do_generate_ax (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
struct type *cast_type)
override;
};
/* This class implements ADL (aka Koenig) function calls for C++. It
holds the name of the function to call, the block in which the
lookup should be done, and a vector of arguments. */
class adl_func_operation
: public tuple_holding_operation<std::string, const block *,
std::vector<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 OP_ADL_FUNC; }
};
/* The OP_ARRAY operation. */
class array_operation
: public tuple_holding_operation<int, int, std::vector<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 OP_ARRAY; }
private:
struct value *evaluate_struct_tuple (struct value *struct_val,
struct expression *exp,
enum noside noside, int nargs);
};
/* A function call. This holds the callee operation and the
arguments. */
class funcall_operation
: public tuple_holding_operation<operation_up, std::vector<operation_up>>
{
public:
using tuple_holding_operation::tuple_holding_operation;
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
{
return std::get<0> (m_storage)->evaluate_funcall (expect_type, exp, noside,
std::get<1> (m_storage));
}
enum exp_opcode opcode () const override
{ return OP_FUNCALL; }
};
} /* namespace expr */
#endif /* EXPOP_H */