2010-01-13 Phil Muldoon <pmuldoon@redhat.com>

PR python/10705

	* python/python-internal.h: Add lazy_string_object_type
	definition.
	(create_lazy_string_object, gdbpy_initialize_lazy_string)
	(gdbpy_is_lazystring, gdbpy_extract_lazy_string): Define.
	* python/py-value.c (valpy_lazy_string): New function.
	(convert_value_from_python): Add lazy string conversion.
	* python/py-prettyprint.c (pretty_print_one_value): Check if
	return is also a lazy string.
	(print_string_repr): Add lazy string printing branch.
	(print_children): Likewise.
	* python/py-lazy-string.c: New file. Implement lazy strings.
	* python/python.c (_initialize_python): Call
	gdbpy_initialize_lazy_string.
	* varobj.c (value_get_print_value): Add lazy string printing
	branch.  Account for encoding.
	* c-lang.c (c_printstr): Account for new encoding argument.  If
	encoding is NULL, find encoding suited for type, otherwise use
	user encoding.
	* language.h (language_defn): Add encoding argument.
	(LA_PRINT_STRING): Likewise.
	* language.c (unk_lang_printstr): Update to reflect new encoding
	argument to language_defn.
	* ada-lang.h (ada_printstr): Likewise.
	* c-lang.h (c_printstr): Likewise.
	* p-lang.h (pascal_printstr);
	* f-lang.c (f_printstr): Likewise.
	* m2-lang.c (m2_printstr): Likewise.
	* objc-lang.c (objc_printstr): Likewise.
	* p-lang.c (pascal_printstr): Likewise.
	* scm-lang.c (scm_printstr): Likewise.
	* c-valprint.c (c_val_print): Update LA_PRINT_STRING call for
	encoding argument.
	* ada-valprint.c (ada_printstr): Likewise.
	* f-valprint.c (f_val_print): Likewise
	* m2-valprint.c (m2_val_print): Likewise.
	* p-valprint.c (pascal_val_print): Likewise.
	* expprint.c (print_subexp_standard): Likewise.
	* valprint.c (val_print_string): Likewise.
	* Makefile.in (SUBDIR_PYTHON_OBS): Add py-lazy-string.
	(SUBDIR_PYTHON_SRCS): Likewise.
	(py-lazy-string.o): New rule.

2010-01-13  Phil Muldoon  <pmuldoon@redhat.com>

	* gdb.texinfo (Values From Inferior): Document lazy_string value
	method.
	(Python API): Add Lazy strings menu item.
	(Lazy Strings In Python): New node.

2010-01-13  Phil Muldoon  <pmuldoon@redhat.com>

	* gdb.python/py-value.exp (test_lazy_strings): Add lazy string test.
	* gdb.python/py-prettyprint.py (pp_ls): New printer.
	* gdb.python/py-prettyprint.exp (run_lang_tests): Add lazy string
	test.
	* gdb.python/py-prettyprint.c: Define lazystring test structure.
	* gdb.python/py-mi.exp: Add lazy string test.

gdb/python/python-internal.h

@@ -71,6 +71,8 @@ PyObject *gdbpy_history (PyObject *self, PyObject *args);
 PyObject *gdbpy_frame_stop_reason_string (PyObject *, PyObject *);
 PyObject *gdbpy_selected_frame (PyObject *self, PyObject *args);
 PyObject *gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw);
+PyObject *gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
+					   const char *encoding, struct type *type);
 
 PyObject *value_to_value_object (struct value *v);
 PyObject *type_to_type_object (struct type *);
@@ -88,6 +90,7 @@ void gdbpy_initialize_commands (void);
 void gdbpy_initialize_types (void);
 void gdbpy_initialize_functions (void);
 void gdbpy_initialize_objfile (void);
+void gdbpy_initialize_lazy_string (void);
 
 struct cleanup *make_cleanup_py_decref (PyObject *py);
 
@@ -117,6 +120,10 @@ PyObject *python_string_to_target_python_string (PyObject *obj);
 char *python_string_to_host_string (PyObject *obj);
 PyObject *target_string_to_unicode (const gdb_byte *str, int length);
 int gdbpy_is_string (PyObject *obj);
+int gdbpy_is_lazy_string (PyObject *result);
+gdb_byte *gdbpy_extract_lazy_string (PyObject *string,
+				     struct type **str_type, 
+				     long *length, char **encoding);
 
 /* Note that these are declared here, and not in python.h with the
    other pretty-printer functions, because they refer to PyObject.  */