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Add xmethod interface to the extension language API.

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* defs.h (enum lval_type): New enumerator "lval_xcallable".
	* extension-priv.h (struct extension_language_ops): Add the
	xmethod interface.
	* extension.c (new_xmethod_worker, clone_xmethod_worker,
	get_matching_xmethod_workers, get_xmethod_argtypes,
	invoke_xmethod, free_xmethod_worker,
	free_xmethod_worker_vec): New functions.
	* extension.h: #include "common/vec.h".
	New function declarations.
	(struct xmethod_worker): New struct.
	(VEC (xmethod_worker_ptr)): New vector type.
	(xmethod_worker_ptr): New typedef.
	(xmethod_worker_vec): Likewise.
	* gdbtypes.c (gdbtypes_post_init): Initialize "xmethod" field of
	builtin_type.
	* gdbtypes.h (enum type_code): New enumerator TYPE_CODE_XMETHOD.
	(struct builtin_type): New field "xmethod".
	* valarith.c (value_ptradd): Assert that the value argument is not
	lval_xcallable.
	* valops.c (value_must_coerce_to_target): Return 0 for
	lval_xcallable values.
	* value.c (struct value): New field XM_WORKER in the field
	LOCATION.
	(value_address, value_raw_address): Return 0 for lval_xcallable
	values.
	(set_value_address): Assert that the value is not an
	lval_xcallable.
	(value_free): Free the associated xmethod worker when freeing
	lval_xcallable values.
	(set_value_component_location): Assert that the WHOLE value is not
	lval_xcallable.
	(value_of_xmethod, call_xmethod): New functions.
	* value.h: Declare "struct xmethod_worker".
	Declare new functions value_of_xmethod, call_xmethod.
This commit is contained in:
Siva Chandra 2014-05-20 06:30:29 -07:00
parent ef370185fc
commit e81e7f5e38
10 changed files with 341 additions and 5 deletions
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39
gdb/extension.h
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@ -21,6 +21,7 @@
#define EXTENSION_H
#include "mi/mi-cmds.h" /* For PRINT_NO_VALUES, etc. */
#include "common/vec.h"
struct breakpoint;
struct command_line;
@ -138,6 +139,26 @@ struct ext_lang_type_printers
/* Type-printers from Python. */
void *py_type_printers;
};
/* A type which holds its extension language specific xmethod worker data. */
struct xmethod_worker
{
/* The language the xmethod worker is implemented in. */
const struct extension_language_defn *extlang;
/* The extension language specific data for this xmethod worker. */
void *data;
/* The TYPE_CODE_XMETHOD value corresponding to this worker.
Always use value_of_xmethod to access it. */
struct value *value;
};
typedef struct xmethod_worker *xmethod_worker_ptr;
DEF_VEC_P (xmethod_worker_ptr);
typedef VEC (xmethod_worker_ptr) xmethod_worker_vec;
/* The interface for gdb's own extension(/scripting) language. */
extern const struct extension_language_defn extension_language_gdb;
@ -212,4 +233,22 @@ extern const struct extension_language_defn *get_breakpoint_cond_ext_lang
extern int breakpoint_ext_lang_cond_says_stop (struct breakpoint *);
extern struct value *invoke_xmethod (struct xmethod_worker *,
struct value *,
struct value **, int nargs);
extern struct xmethod_worker *clone_xmethod_worker (struct xmethod_worker *);
extern struct xmethod_worker *new_xmethod_worker
(const struct extension_language_defn *extlang, void *data);
extern void free_xmethod_worker (struct xmethod_worker *);
extern void free_xmethod_worker_vec (void *vec);
extern xmethod_worker_vec *get_matching_xmethod_workers
(struct type *, const char *);
extern struct type **get_xmethod_arg_types (struct xmethod_worker *, int *);
#endif /* EXTENSION_H */