mirror of
https://sourceware.org/git/binutils-gdb.git
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2213 lines
58 KiB
C++
2213 lines
58 KiB
C++
/* Definitions for expressions in GDB
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Copyright (C) 2020-2022 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef EXPOP_H
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#define EXPOP_H
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#include "block.h"
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#include "c-lang.h"
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#include "cp-abi.h"
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#include "expression.h"
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#include "objfiles.h"
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#include "gdbsupport/traits.h"
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#include "gdbsupport/enum-flags.h"
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struct agent_expr;
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struct axs_value;
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extern void gen_expr_binop (struct expression *exp,
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enum exp_opcode op,
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expr::operation *lhs, expr::operation *rhs,
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struct agent_expr *ax, struct axs_value *value);
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extern void gen_expr_structop (struct expression *exp,
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enum exp_opcode op,
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expr::operation *lhs,
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const char *name,
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struct agent_expr *ax, struct axs_value *value);
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extern void gen_expr_unop (struct expression *exp,
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enum exp_opcode op,
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expr::operation *lhs,
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struct agent_expr *ax, struct axs_value *value);
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extern struct value *eval_op_scope (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct type *type, const char *string);
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extern struct value *eval_op_var_msym_value (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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bool outermost_p,
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bound_minimal_symbol msymbol);
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extern struct value *eval_op_var_entry_value (struct type *expect_type,
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struct expression *exp,
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enum noside noside, symbol *sym);
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extern struct value *eval_op_func_static_var (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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value *func, const char *var);
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extern struct value *eval_op_register (struct type *expect_type,
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struct expression *exp,
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enum noside noside, const char *name);
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extern struct value *eval_op_ternop (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *array, struct value *low,
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struct value *upper);
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extern struct value *eval_op_structop_struct (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1,
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const char *string);
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extern struct value *eval_op_structop_ptr (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1,
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const char *string);
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extern struct value *eval_op_member (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1, struct value *arg2);
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extern struct value *eval_op_add (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1, struct value *arg2);
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extern struct value *eval_op_sub (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1, struct value *arg2);
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extern struct value *eval_op_binary (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1, struct value *arg2);
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extern struct value *eval_op_subscript (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_equal (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_notequal (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_less (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_gtr (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_geq (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_leq (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_repeat (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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extern struct value *eval_op_plus (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_neg (struct type *expect_type,
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struct expression *exp,
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enum noside noside, enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_complement (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_lognot (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_preinc (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_predec (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_postinc (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_postdec (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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enum exp_opcode op,
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struct value *arg1);
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extern struct value *eval_op_ind (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1);
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extern struct value *eval_op_type (struct type *expect_type,
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struct expression *exp,
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enum noside noside, struct type *type);
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extern struct value *eval_op_alignof (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1);
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extern struct value *eval_op_memval (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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struct value *arg1, struct type *type);
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extern struct value *eval_binop_assign_modify (struct type *expect_type,
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struct expression *exp,
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enum noside noside,
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enum exp_opcode op,
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struct value *arg1,
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struct value *arg2);
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namespace expr
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{
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class ada_component;
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/* The check_objfile overloads are used to check whether a particular
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component of some operation references an objfile. The passed-in
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objfile will never be a debug objfile. */
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/* See if EXP_OBJFILE matches OBJFILE. */
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static inline bool
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check_objfile (struct objfile *exp_objfile, struct objfile *objfile)
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{
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if (exp_objfile->separate_debug_objfile_backlink)
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exp_objfile = exp_objfile->separate_debug_objfile_backlink;
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return exp_objfile == objfile;
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}
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static inline bool
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check_objfile (struct type *type, struct objfile *objfile)
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{
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struct objfile *ty_objfile = type->objfile_owner ();
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if (ty_objfile != nullptr)
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return check_objfile (ty_objfile, objfile);
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return false;
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}
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static inline bool
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check_objfile (struct symbol *sym, struct objfile *objfile)
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{
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return check_objfile (sym->objfile (), objfile);
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}
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static inline bool
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check_objfile (const struct block *block, struct objfile *objfile)
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{
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return check_objfile (block_objfile (block), objfile);
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}
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static inline bool
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check_objfile (const block_symbol &sym, struct objfile *objfile)
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{
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return (check_objfile (sym.symbol, objfile)
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|| check_objfile (sym.block, objfile));
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}
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static inline bool
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check_objfile (bound_minimal_symbol minsym, struct objfile *objfile)
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{
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return check_objfile (minsym.objfile, objfile);
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}
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static inline bool
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check_objfile (internalvar *ivar, struct objfile *objfile)
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{
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return false;
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}
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static inline bool
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check_objfile (const std::string &str, struct objfile *objfile)
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{
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return false;
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}
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static inline bool
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check_objfile (const operation_up &op, struct objfile *objfile)
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{
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return op->uses_objfile (objfile);
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}
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static inline bool
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check_objfile (enum exp_opcode val, struct objfile *objfile)
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{
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return false;
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}
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static inline bool
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check_objfile (ULONGEST val, struct objfile *objfile)
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{
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return false;
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}
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template<typename T>
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static inline bool
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check_objfile (enum_flags<T> val, struct objfile *objfile)
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{
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return false;
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}
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template<typename T>
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static inline bool
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check_objfile (const std::vector<T> &collection, struct objfile *objfile)
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{
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for (const auto &item : collection)
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{
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if (check_objfile (item, objfile))
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return true;
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}
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return false;
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}
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template<typename S, typename T>
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static inline bool
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check_objfile (const std::pair<S, T> &item, struct objfile *objfile)
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{
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return (check_objfile (item.first, objfile)
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|| check_objfile (item.second, objfile));
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}
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extern bool check_objfile (const std::unique_ptr<ada_component> &comp,
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struct objfile *objfile);
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static inline void
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dump_for_expression (struct ui_file *stream, int depth,
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const operation_up &op)
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{
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op->dump (stream, depth);
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}
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extern void dump_for_expression (struct ui_file *stream, int depth,
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enum exp_opcode op);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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const std::string &str);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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struct type *type);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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CORE_ADDR addr);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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internalvar *ivar);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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symbol *sym);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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const block_symbol &sym);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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bound_minimal_symbol msym);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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const block *bl);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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type_instance_flags flags);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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enum c_string_type_values flags);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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enum range_flag flags);
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extern void dump_for_expression (struct ui_file *stream, int depth,
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const std::unique_ptr<ada_component> &comp);
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template<typename T>
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void
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dump_for_expression (struct ui_file *stream, int depth,
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const std::vector<T> &vals)
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{
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gdb_printf (stream, _("%*sVector:\n"), depth, "");
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for (auto &item : vals)
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dump_for_expression (stream, depth + 1, item);
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}
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template<typename X, typename Y>
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void
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dump_for_expression (struct ui_file *stream, int depth,
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const std::pair<X, Y> &vals)
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{
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dump_for_expression (stream, depth, vals.first);
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dump_for_expression (stream, depth, vals.second);
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}
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/* Base class for most concrete operations. This class holds data,
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specified via template parameters, and supplies generic
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implementations of the 'dump' and 'uses_objfile' methods. */
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template<typename... Arg>
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class tuple_holding_operation : public operation
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{
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public:
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explicit tuple_holding_operation (Arg... args)
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: m_storage (std::forward<Arg> (args)...)
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{
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}
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DISABLE_COPY_AND_ASSIGN (tuple_holding_operation);
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bool uses_objfile (struct objfile *objfile) const override
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{
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return do_check_objfile<0, Arg...> (objfile, m_storage);
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}
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void dump (struct ui_file *stream, int depth) const override
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{
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dump_for_expression (stream, depth, opcode ());
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do_dump<0, Arg...> (stream, depth + 1, m_storage);
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}
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protected:
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/* Storage for the data. */
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std::tuple<Arg...> m_storage;
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private:
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/* do_dump does the work of dumping the data. */
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template<int I, typename... T>
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typename std::enable_if<I == sizeof... (T), void>::type
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do_dump (struct ui_file *stream, int depth, const std::tuple<T...> &value)
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const
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{
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}
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template<int I, typename... T>
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typename std::enable_if<I < sizeof... (T), void>::type
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do_dump (struct ui_file *stream, int depth, const std::tuple<T...> &value)
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const
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{
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dump_for_expression (stream, depth, std::get<I> (value));
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do_dump<I + 1, T...> (stream, depth, value);
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}
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/* do_check_objfile does the work of checking whether this object
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refers to OBJFILE. */
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template<int I, typename... T>
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typename std::enable_if<I == sizeof... (T), bool>::type
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do_check_objfile (struct objfile *objfile, const std::tuple<T...> &value)
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const
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{
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return false;
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}
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template<int I, typename... T>
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typename std::enable_if<I < sizeof... (T), bool>::type
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do_check_objfile (struct objfile *objfile, const std::tuple<T...> &value)
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const
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{
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if (check_objfile (std::get<I> (value), objfile))
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return true;
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return do_check_objfile<I + 1, T...> (objfile, value);
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}
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};
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/* The check_constant overloads are used to decide whether a given
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concrete operation is a constant. This is done by checking the
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operands. */
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static inline bool
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check_constant (const operation_up &item)
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{
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return item->constant_p ();
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}
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static inline bool
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check_constant (bound_minimal_symbol msym)
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{
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return false;
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}
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static inline bool
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check_constant (struct type *type)
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{
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return true;
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}
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static inline bool
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check_constant (const struct block *block)
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{
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return true;
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}
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static inline bool
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check_constant (const std::string &str)
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{
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return true;
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}
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static inline bool
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check_constant (ULONGEST cst)
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{
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return true;
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}
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static inline bool
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check_constant (struct symbol *sym)
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{
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enum address_class sc = sym->aclass ();
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return (sc == LOC_BLOCK
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|| sc == LOC_CONST
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|| sc == LOC_CONST_BYTES
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|| sc == LOC_LABEL);
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}
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static inline bool
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check_constant (const block_symbol &sym)
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{
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/* We know the block is constant, so we only need to check the
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symbol. */
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return check_constant (sym.symbol);
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}
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template<typename T>
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static inline bool
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check_constant (const std::vector<T> &collection)
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{
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for (const auto &item : collection)
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if (!check_constant (item))
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return false;
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return true;
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}
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template<typename S, typename T>
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static inline bool
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check_constant (const std::pair<S, T> &item)
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{
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return check_constant (item.first) && check_constant (item.second);
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}
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/* Base class for concrete operations. This class supplies an
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implementation of 'constant_p' that works by checking the
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operands. */
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template<typename... Arg>
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class maybe_constant_operation
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: public tuple_holding_operation<Arg...>
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{
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public:
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using tuple_holding_operation<Arg...>::tuple_holding_operation;
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bool constant_p () const override
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{
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return do_check_constant<0, Arg...> (this->m_storage);
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}
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private:
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template<int I, typename... T>
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typename std::enable_if<I == sizeof... (T), bool>::type
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|
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 = TYPE_TARGET_TYPE (check_typedef (expect_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 */
|