/* Language independent support for printing types for GDB, the GNU debugger.
- Copyright (C) 1986-2013 Free Software Foundation, Inc.
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef TYPEPRINT_H
#define TYPEPRINT_H
+#include "gdb_obstack.h"
+
enum language;
struct ui_file;
struct typedef_hash_table;
+struct ext_lang_type_printers;
+
+struct print_offset_data
+{
+ /* The offset to be applied to bitpos when PRINT_OFFSETS is true.
+ This is needed for when we are printing nested structs and want
+ to make sure that the printed offset for each field carries over
+ the offset of the outter struct. */
+ unsigned int offset_bitpos = 0;
+
+ /* END_BITPOS is the one-past-the-end bit position of the previous
+ field (where we expect the current field to be if there is no
+ hole). */
+ unsigned int end_bitpos = 0;
+
+ /* Print information about field at index FIELD_IDX of the struct type
+ TYPE and update this object.
+
+ If the field is static, it simply prints the correct number of
+ spaces.
+
+ The output is strongly based on pahole(1). */
+ void update (struct type *type, unsigned int field_idx,
+ struct ui_file *stream);
+
+ /* Call when all fields have been printed. This will print
+ information about any padding that may exist. LEVEL is the
+ desired indentation level. */
+ void finish (struct type *type, int level, struct ui_file *stream);
+
+ /* When printing the offsets of a struct and its fields (i.e.,
+ 'ptype /o'; type_print_options::print_offsets), we use this many
+ characters when printing the offset information at the beginning
+ of the line. This is needed in order to generate the correct
+ amount of whitespaces when no offset info should be printed for a
+ certain field. */
+ static const int indentation;
+
+private:
+
+ /* Helper function for ptype/o implementation that prints
+ information about a hole, if necessary. STREAM is where to
+ print. BITPOS is the bitpos of the current field. FOR_WHAT is a
+ string describing the purpose of the hole. */
+
+ void maybe_print_hole (struct ui_file *stream, unsigned int bitpos,
+ const char *for_what);
+};
struct type_print_options
{
/* True means print typedefs in a class. */
unsigned int print_typedefs : 1;
+ /* True means to print offsets, a la 'pahole'. */
+ unsigned int print_offsets : 1;
+
+ /* The number of nested type definitions to print. -1 == all. */
+ int print_nested_type_limit;
+
/* If not NULL, a local typedef hash table used when printing a
type. */
- struct typedef_hash_table *local_typedefs;
+ typedef_hash_table *local_typedefs;
/* If not NULL, a global typedef hash table used when printing a
type. */
- struct typedef_hash_table *global_typedefs;
+ typedef_hash_table *global_typedefs;
/* The list of type printers associated with the global typedef
table. This is intentionally opaque. */
- void *global_printers;
+ struct ext_lang_type_printers *global_printers;
};
extern const struct type_print_options type_print_raw_options;
-void recursively_update_typedef_hash (struct typedef_hash_table *,
- struct type *);
+/* A hash table holding typedef_field objects. This is more
+ complicated than an ordinary hash because it must also track the
+ lifetime of some -- but not all -- of the contained objects. */
-void add_template_parameters (struct typedef_hash_table *, struct type *);
+class typedef_hash_table
+{
+public:
-struct typedef_hash_table *create_typedef_hash (void);
+ /* Create a new typedef-lookup hash table. */
+ typedef_hash_table ();
-void free_typedef_hash (struct typedef_hash_table *);
+ ~typedef_hash_table ();
-struct cleanup *make_cleanup_free_typedef_hash (struct typedef_hash_table *);
+ /* Copy a typedef hash. */
+ typedef_hash_table (const typedef_hash_table &);
-struct typedef_hash_table *copy_typedef_hash (struct typedef_hash_table *);
+ typedef_hash_table &operator= (const typedef_hash_table &) = delete;
-const char *find_typedef_in_hash (const struct type_print_options *,
- struct type *);
+ /* Add typedefs from T to the hash table TABLE. */
+ void recursively_update (struct type *);
-void print_type_scalar (struct type * type, LONGEST, struct ui_file *);
+ /* Add template parameters from T to the typedef hash TABLE. */
+ void add_template_parameters (struct type *t);
+
+ /* Look up the type T in the typedef hash tables contained in FLAGS.
+ The local table is searched first, then the global table (either
+ table can be NULL, in which case it is skipped). If T is in a
+ table, return its short (class-relative) typedef name. Otherwise
+ return NULL. */
+ static const char *find_typedef (const struct type_print_options *flags,
+ struct type *t);
+
+private:
+
+ static const char *find_global_typedef (const struct type_print_options *flags,
+ struct type *t);
-void c_type_print_varspec_suffix (struct type *, struct ui_file *, int,
- int, int, const struct type_print_options *);
+
+ /* The actual hash table. */
+ htab_t m_table;
+
+ /* Storage for typedef_field objects that must be synthesized. */
+ auto_obstack m_storage;
+};
+
+
+void print_type_scalar (struct type * type, LONGEST, struct ui_file *);
void c_type_print_args (struct type *, struct ui_file *, int, enum language,
const struct type_print_options *);
+/* Print <unknown return type> to stream STREAM. */
+
+void type_print_unknown_return_type (struct ui_file *stream);
+
+/* Throw an error indicating that the user tried to use a symbol that
+ has unknown type. SYM_PRINT_NAME is the name of the symbol, to be
+ included in the error message. */
+extern void error_unknown_type (const char *sym_print_name);
+
+extern void val_print_not_allocated (struct ui_file *stream);
+
+extern void val_print_not_associated (struct ui_file *stream);
+
#endif
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