gdb/c-lang.h

   1 /* C language support definitions for GDB, the GNU debugger.
   2
   3    Copyright (C) 1992-2018 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
  21 #if !defined (C_LANG_H)
  22 #define C_LANG_H 1
  23
  24 struct ui_file;
  25 struct language_arch_info;
  26 struct type_print_options;
  27 struct parser_state;
  28
  29 #include "value.h"
  30 #include "macroexp.h"
  31 #include "parser-defs.h"
  32 #include "common/enum-flags.h"
  33
  34
  35 /* The various kinds of C string and character.  Note that these
  36    values are chosen so that they may be or'd together in certain
  37    ways.  */
  38 enum c_string_type_values
  39   {
  40     /* An ordinary string: "value".  */
  41     C_STRING = 0,
  42     /* A wide string: L"value".  */
  43     C_WIDE_STRING = 1,
  44     /* A 16-bit Unicode string: u"value".  */
  45     C_STRING_16 = 2,
  46     /* A 32-bit Unicode string: U"value".  */
  47     C_STRING_32 = 3,
  48     /* An ordinary char: 'v'.  This can also be or'd with one of the
  49        above to form the corresponding CHAR value from a STRING
  50        value.  */
  51     C_CHAR = 4,
  52     /* A wide char: L'v'.  */
  53     C_WIDE_CHAR = 5,
  54     /* A 16-bit Unicode char: u'v'.  */
  55     C_CHAR_16 = 6,
  56     /* A 32-bit Unicode char: U'v'.  */
  57     C_CHAR_32 = 7
  58   };
  59
  60 DEF_ENUM_FLAGS_TYPE (enum c_string_type_values, c_string_type);
  61
  62 /* Defined in c-exp.y.  */
  63
  64 extern int c_parse (struct parser_state *);
  65
  66 extern void c_yyerror (const char *);
  67
  68 extern int c_parse_escape (const char **, struct obstack *);
  69
  70 /* Defined in c-typeprint.c */
  71 extern void c_print_type (struct type *, const char *,
  72                           struct ui_file *, int, int,
  73                           const struct type_print_options *);
  74
  75 /* Print a type but allow the precise language to be specified.  */
  76
  77 extern void c_print_type (struct type *, const char *,
  78                           struct ui_file *, int, int,
  79                           enum language,
  80                           const struct type_print_options *);
  81
  82 extern void c_print_typedef (struct type *,
  83                              struct symbol *,
  84                              struct ui_file *);
  85
  86 extern void c_val_print (struct type *,
  87                          int, CORE_ADDR,
  88                          struct ui_file *, int,
  89                          struct value *,
  90                          const struct value_print_options *);
  91
  92 extern void c_value_print (struct value *, struct ui_file *,
  93                            const struct value_print_options *);
  94
  95 /* These are in c-lang.c: */
  96
  97 extern struct value *evaluate_subexp_c (struct type *expect_type,
  98                                         struct expression *exp,
  99                                         int *pos,
 100                                         enum noside noside);
 101
 102 extern void c_printchar (int, struct type *, struct ui_file *);
 103
 104 extern void c_printstr (struct ui_file * stream,
 105                         struct type *elttype,
 106                         const gdb_byte *string,
 107                         unsigned int length,
 108                         const char *user_encoding,
 109                         int force_ellipses,
 110                         const struct value_print_options *options);
 111
 112 extern void c_language_arch_info (struct gdbarch *gdbarch,
 113                                   struct language_arch_info *lai);
 114
 115 extern const struct exp_descriptor exp_descriptor_c;
 116
 117 extern void c_emit_char (int c, struct type *type,
 118                          struct ui_file *stream, int quoter);
 119
 120 extern const struct op_print c_op_print_tab[];
 121
 122 extern gdb::unique_xmalloc_ptr<char> c_watch_location_expression
 123      (struct type *type, CORE_ADDR addr);
 124
 125 /* These are in c-typeprint.c: */
 126
 127 extern void c_type_print_base (struct type *, struct ui_file *,
 128                                int, int, const struct type_print_options *);
 129
 130 /* These are in cp-valprint.c */
 131
 132 extern void cp_print_class_member (const gdb_byte *, struct type *,
 133                                    struct ui_file *, const char *);
 134
 135 extern void cp_print_value_fields (struct type *, struct type *,
 136                                    LONGEST, CORE_ADDR,
 137                                    struct ui_file *, int,
 138                                    struct value *,
 139                                    const struct value_print_options *,
 140                                    struct type **, int);
 141
 142 extern void cp_print_value_fields_rtti (struct type *,
 143                                         const gdb_byte *, LONGEST, CORE_ADDR,
 144                                         struct ui_file *, int,
 145                                         struct value *,
 146                                         const struct value_print_options *,
 147                                         struct type **, int);
 148
 149 extern int cp_is_vtbl_ptr_type (struct type *);
 150
 151 extern int cp_is_vtbl_member (struct type *);
 152
 153 /* These are in c-valprint.c.  */
 154
 155 extern int c_textual_element_type (struct type *, char);
 156
 157 /* Create a new instance of the C compiler and return it.  The new
 158    compiler is owned by the caller and must be freed using the destroy
 159    method.  This function never returns NULL, but rather throws an
 160    exception on failure.  This is suitable for use as the
 161    la_get_compile_instance language method.  */
 162
 163 extern struct compile_instance *c_get_compile_context (void);
 164
 165 /* This takes the user-supplied text and returns a new bit of code to
 166    compile.
 167
 168    This is used as the la_compute_program language method; see that
 169    for a description of the arguments.  */
 170
 171 extern std::string c_compute_program (struct compile_instance *inst,
 172                                       const char *input,
 173                                       struct gdbarch *gdbarch,
 174                                       const struct block *expr_block,
 175                                       CORE_ADDR expr_pc);
 176
 177 #endif /* !defined (C_LANG_H) */