gdb/expprint.c

   1 /* Print in infix form a struct expression.
   2
   3    Copyright (C) 1986-2022 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "symtab.h"
  22 #include "gdbtypes.h"
  23 #include "expression.h"
  24 #include "value.h"
  25 #include "language.h"
  26 #include "parser-defs.h"
  27 #include "user-regs.h"          /* For user_reg_map_regnum_to_name.  */
  28 #include "target.h"
  29 #include "block.h"
  30 #include "objfiles.h"
  31 #include "valprint.h"
  32 #include "cli/cli-style.h"
  33 #include "c-lang.h"
  34 #include "expop.h"
  35 #include "ada-exp.h"
  36
  37 #include <ctype.h>
  38
  39 /* Default name for the standard operator OPCODE (i.e., one defined in
  40    the definition of enum exp_opcode).  */
  41
  42 const char *
  43 op_name (enum exp_opcode opcode)
  44 {
  45   switch (opcode)
  46     {
  47     default:
  48       {
  49         static char buf[30];
  50
  51         xsnprintf (buf, sizeof (buf), "<unknown %d>", opcode);
  52         return buf;
  53       }
  54 #define OP(name)        \
  55     case name:          \
  56       return #name ;
  57 #include "std-operator.def"
  58 #undef OP
  59     }
  60 }
  61
  62 void
  63 dump_prefix_expression (struct expression *exp, struct ui_file *stream)
  64 {
  65   exp->op->dump (stream, 0);
  66 }
  67
  68 /* Meant to be used in debug sessions, so don't export it in a header file.  */
  69 extern void ATTRIBUTE_USED debug_exp (struct expression *exp);
  70
  71 /* Print EXP.  */
  72
  73 void
  74 ATTRIBUTE_USED
  75 debug_exp (struct expression *exp)
  76 {
  77   exp->op->dump (gdb_stdlog, 0);
  78   gdb_flush (gdb_stdlog);
  79 }
  80
  81 namespace expr
  82 {
  83
  84 void
  85 dump_for_expression (struct ui_file *stream, int depth, enum exp_opcode op)
  86 {
  87   gdb_printf (stream, _("%*sOperation: %s\n"), depth, "", op_name (op));
  88 }
  89
  90 void
  91 dump_for_expression (struct ui_file *stream, int depth, const std::string &str)
  92 {
  93   gdb_printf (stream, _("%*sString: %s\n"), depth, "", str.c_str ());
  94 }
  95
  96 void
  97 dump_for_expression (struct ui_file *stream, int depth, struct type *type)
  98 {
  99   gdb_printf (stream, _("%*sType: "), depth, "");
 100   type_print (type, nullptr, stream, 0);
 101   gdb_printf (stream, "\n");
 102 }
 103
 104 void
 105 dump_for_expression (struct ui_file *stream, int depth, CORE_ADDR addr)
 106 {
 107   gdb_printf (stream, _("%*sConstant: %s\n"), depth, "",
 108               core_addr_to_string (addr));
 109 }
 110
 111 void
 112 dump_for_expression (struct ui_file *stream, int depth, internalvar *ivar)
 113 {
 114   gdb_printf (stream, _("%*sInternalvar: $%s\n"), depth, "",
 115               internalvar_name (ivar));
 116 }
 117
 118 void
 119 dump_for_expression (struct ui_file *stream, int depth, symbol *sym)
 120 {
 121   gdb_printf (stream, _("%*sSymbol: %s\n"), depth, "",
 122               sym->print_name ());
 123 }
 124
 125 void
 126 dump_for_expression (struct ui_file *stream, int depth,
 127                      bound_minimal_symbol msym)
 128 {
 129   gdb_printf (stream, _("%*sMinsym %s in objfile %s\n"), depth, "",
 130               msym.minsym->print_name (), objfile_name (msym.objfile));
 131 }
 132
 133 void
 134 dump_for_expression (struct ui_file *stream, int depth, const block *bl)
 135 {
 136   gdb_printf (stream, _("%*sBlock: %p\n"), depth, "", bl);
 137 }
 138
 139 void
 140 dump_for_expression (struct ui_file *stream, int depth,
 141                      const block_symbol &sym)
 142 {
 143   gdb_printf (stream, _("%*sBlock symbol:\n"), depth, "");
 144   dump_for_expression (stream, depth + 1, sym.symbol);
 145   dump_for_expression (stream, depth + 1, sym.block);
 146 }
 147
 148 void
 149 dump_for_expression (struct ui_file *stream, int depth,
 150                      type_instance_flags flags)
 151 {
 152   gdb_printf (stream, _("%*sType flags: "), depth, "");
 153   if (flags & TYPE_INSTANCE_FLAG_CONST)
 154     gdb_puts ("const ", stream);
 155   if (flags & TYPE_INSTANCE_FLAG_VOLATILE)
 156     gdb_puts ("volatile", stream);
 157   gdb_printf (stream, "\n");
 158 }
 159
 160 void
 161 dump_for_expression (struct ui_file *stream, int depth,
 162                      enum c_string_type_values flags)
 163 {
 164   gdb_printf (stream, _("%*sC string flags: "), depth, "");
 165   switch (flags & ~C_CHAR)
 166     {
 167     case C_WIDE_STRING:
 168       gdb_puts (_("wide "), stream);
 169       break;
 170     case C_STRING_16:
 171       gdb_puts (_("u16 "), stream);
 172       break;
 173     case C_STRING_32:
 174       gdb_puts (_("u32 "), stream);
 175       break;
 176     default:
 177       gdb_puts (_("ordinary "), stream);
 178       break;
 179     }
 180
 181   if ((flags & C_CHAR) != 0)
 182     gdb_puts (_("char"), stream);
 183   else
 184     gdb_puts (_("string"), stream);
 185   gdb_puts ("\n", stream);
 186 }
 187
 188 void
 189 dump_for_expression (struct ui_file *stream, int depth,
 190                      enum range_flag flags)
 191 {
 192   gdb_printf (stream, _("%*sRange:"), depth, "");
 193   if ((flags & RANGE_LOW_BOUND_DEFAULT) != 0)
 194     gdb_puts (_("low-default "), stream);
 195   if ((flags & RANGE_HIGH_BOUND_DEFAULT) != 0)
 196     gdb_puts (_("high-default "), stream);
 197   if ((flags & RANGE_HIGH_BOUND_EXCLUSIVE) != 0)
 198     gdb_puts (_("high-exclusive "), stream);
 199   if ((flags & RANGE_HAS_STRIDE) != 0)
 200     gdb_puts (_("has-stride"), stream);
 201   gdb_printf (stream, "\n");
 202 }
 203
 204 void
 205 dump_for_expression (struct ui_file *stream, int depth,
 206                      const std::unique_ptr<ada_component> &comp)
 207 {
 208   comp->dump (stream, depth);
 209 }
 210
 211 void
 212 float_const_operation::dump (struct ui_file *stream, int depth) const
 213 {
 214   gdb_printf (stream, _("%*sFloat: "), depth, "");
 215   print_floating (m_data.data (), m_type, stream);
 216   gdb_printf (stream, "\n");
 217 }
 218
 219 } /* namespace expr */