binutils-gdb/gdb/c-lang.h

/* C language support definitions for GDB, the GNU debugger.

   Copyright (C) 1992-2021 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */


#if !defined (C_LANG_H)
#define C_LANG_H 1

struct ui_file;
struct language_arch_info;
struct type_print_options;
struct parser_state;

#include "value.h"
#include "macroexp.h"
#include "gdbsupport/enum-flags.h"


/* The various kinds of C string and character.  Note that these
   values are chosen so that they may be or'd together in certain
   ways.  */
enum c_string_type_values : unsigned
  {
    /* An ordinary string: "value".  */
    C_STRING = 0,
    /* A wide string: L"value".  */
    C_WIDE_STRING = 1,
    /* A 16-bit Unicode string: u"value".  */
    C_STRING_16 = 2,
    /* A 32-bit Unicode string: U"value".  */
    C_STRING_32 = 3,
    /* An ordinary char: 'v'.  This can also be or'd with one of the
       above to form the corresponding CHAR value from a STRING
       value.  */
    C_CHAR = 4,
    /* A wide char: L'v'.  */
    C_WIDE_CHAR = 5,
    /* A 16-bit Unicode char: u'v'.  */
    C_CHAR_16 = 6,
    /* A 32-bit Unicode char: U'v'.  */
    C_CHAR_32 = 7
  };

DEF_ENUM_FLAGS_TYPE (enum c_string_type_values, c_string_type);

/* Defined in c-exp.y.  */

extern int c_parse (struct parser_state *);

extern int c_parse_escape (const char **, struct obstack *);

/* Defined in c-typeprint.c */
extern void c_print_type (struct type *, const char *,
			  struct ui_file *, int, int,
			  const struct type_print_options *);

/* Print a type but allow the precise language to be specified.  */

extern void c_print_type (struct type *, const char *,
			  struct ui_file *, int, int,
			  enum language,
			  const struct type_print_options *);

extern void c_print_typedef (struct type *,
			     struct symbol *,
			     struct ui_file *);

/* Implement la_value_print_inner for the C family of languages.  */

extern void c_value_print_inner (struct value *, struct ui_file *, int,
				 const struct value_print_options *);

extern void c_value_print (struct value *, struct ui_file *,
			   const struct value_print_options *);

/* These are in c-lang.c: */

extern struct value *evaluate_subexp_c (struct type *expect_type,
					struct expression *exp,
					int *pos,
					enum noside noside);

extern void c_printstr (struct ui_file * stream,
			struct type *elttype,
			const gdb_byte *string,
			unsigned int length,
			const char *user_encoding,
			int force_ellipses,
			const struct value_print_options *options);

extern void c_language_arch_info (struct gdbarch *gdbarch,
				  struct language_arch_info *lai);

extern const struct exp_descriptor exp_descriptor_c;

extern void c_emit_char (int c, struct type *type,
			 struct ui_file *stream, int quoter);

extern const struct op_print c_op_print_tab[];

/* These are in c-typeprint.c: */

extern void c_type_print_base (struct type *, struct ui_file *,
			       int, int, const struct type_print_options *);

/* These are in cp-valprint.c */

extern void cp_print_class_member (const gdb_byte *, struct type *,
				   struct ui_file *, const char *);

extern void cp_print_value_fields (struct value *,
				   struct ui_file *, int,
				   const struct value_print_options *,
				   struct type **, int);

/* gcc-2.6 or later (when using -fvtable-thunks)
   emits a unique named type for a vtable entry.
   Some gdb code depends on that specific name.  */

extern const char vtbl_ptr_name[];

extern int cp_is_vtbl_ptr_type (struct type *);

extern int cp_is_vtbl_member (struct type *);

/* Return true if TYPE is a string type.  Unlike DEFAULT_IS_STRING_TYPE_P
   this will detect arrays of characters not just TYPE_CODE_STRING.  */

extern bool c_is_string_type_p (struct type *type);

/* These are in c-valprint.c.  */

extern int c_textual_element_type (struct type *, char);

/* Create a new instance of the C compiler and return it.  This
   function never returns NULL, but rather throws an exception on
   failure.  This is suitable for use as the
   language_defn::get_compile_instance method.  */

extern std::unique_ptr<compile_instance> c_get_compile_context ();

/* Create a new instance of the C++ compiler and return it.  This
   function never returns NULL, but rather throws an exception on
   failure.  This is suitable for use as the
   language_defn::get_compile_instance method.  */

extern std::unique_ptr<compile_instance> cplus_get_compile_context ();

/* This takes the user-supplied text and returns a new bit of code to
   compile.

   This is used as the compute_program language method; see that
   for a description of the arguments.  */

extern std::string c_compute_program (compile_instance *inst,
				      const char *input,
				      struct gdbarch *gdbarch,
				      const struct block *expr_block,
				      CORE_ADDR expr_pc);

/* This takes the user-supplied text and returns a new bit of code to compile.

   This is used as the compute_program language method; see that
   for a description of the arguments.  */

extern std::string cplus_compute_program (compile_instance *inst,
					  const char *input,
					  struct gdbarch *gdbarch,
					  const struct block *expr_block,
					  CORE_ADDR expr_pc);

#endif /* !defined (C_LANG_H) */