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PyUnicode_Ready() now sets ascii=1 if maxchar < 128 

ascii=1 is no more reserved to PyASCIIObject. Use
PyUnicode_IS_COMPACT_ASCII(obj) to check if obj is a PyASCIIObject (as before).
This commit is contained in:
Victor Stinner 2011-10-03 13:53:37 +02:00
parent 1b4f9ceca7
commit a3b334da6d
3 changed files with 42 additions and 33 deletions
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41
Include/unicodeobject.h
View File

@ -224,7 +224,7 @@ typedef struct {
PyUnicode_4BYTE_KIND
* compact = 1
* ready = 1
* (ascii = 0)
* ascii = 0
- string created by the legacy API (not ready):
@ -236,7 +236,7 @@ typedef struct {
* data.any is NULL
* utf8 is NULL
* interned = SSTATE_NOT_INTERNED
* (ascii = 0)
* ascii = 0
- string created by the legacy API, ready:
@ -246,7 +246,6 @@ typedef struct {
* compact = 0
* ready = 1
* data.any is not NULL
* (ascii = 0)
String created by the legacy API becomes ready when calling
PyUnicode_READY().
@ -278,8 +277,9 @@ typedef struct {
one block for the PyUnicodeObject struct and another for its data
buffer. */
unsigned int compact:1;
/* Compact objects which are ASCII-only also have the state.compact
flag set, and use the PyASCIIObject struct. */
/* kind is PyUnicode_1BYTE_KIND but data contains only ASCII
characters. If ascii is 1 and compact is 1, use the PyASCIIObject
structure. */
unsigned int ascii:1;
/* The ready flag indicates whether the object layout is initialized
completely. This means that this is either a compact object, or
@ -304,7 +304,7 @@ typedef struct {
/* Strings allocated through PyUnicode_FromUnicode(NULL, len) use the
PyUnicodeObject structure. The actual string data is initially in the wstr
block, and copied into the data block using PyUnicode_Ready. */
block, and copied into the data block using _PyUnicode_Ready. */
typedef struct {
PyCompactUnicodeObject _base;
union {
@ -327,7 +327,7 @@ PyAPI_DATA(PyTypeObject) PyUnicodeIter_Type;
#ifndef Py_LIMITED_API
#define PyUnicode_WSTR_LENGTH(op) \
(((PyASCIIObject*)op)->state.ascii ? \
(PyUnicode_IS_COMPACT_ASCII(op) ? \
((PyASCIIObject*)op)->length : \
((PyCompactUnicodeObject*)op)->wstr_length)
@ -369,10 +369,24 @@ PyAPI_DATA(PyTypeObject) PyUnicodeIter_Type;
#define SSTATE_INTERNED_MORTAL 1
#define SSTATE_INTERNED_IMMORTAL 2
#define PyUnicode_IS_COMPACT_ASCII(op) (((PyASCIIObject*)op)->state.ascii)
/* Return true if the string contains only ASCII characters, or 0 if not. The
string may be compact (PyUnicode_IS_COMPACT_ASCII) or not. No type checks
or Ready calls are performed. */
#define PyUnicode_IS_ASCII(op) \
(((PyASCIIObject*)op)->state.ascii)
/* Return true if the string is compact or 0 if not.
No type checks or Ready calls are performed. */
#define PyUnicode_IS_COMPACT(op) \
(((PyASCIIObject*)(op))->state.compact)
/* Return true if the string is a compact ASCII string (use PyASCIIObject
structure), or 0 if not. No type checks or Ready calls are performed. */
#define PyUnicode_IS_COMPACT_ASCII(op) \
(PyUnicode_IS_ASCII(op) && PyUnicode_IS_COMPACT(op))
/* String contains only wstr byte characters. This is only possible
when the string was created with a legacy API and PyUnicode_Ready()
when the string was created with a legacy API and _PyUnicode_Ready()
has not been called yet. */
#define PyUnicode_WCHAR_KIND 0
@ -399,11 +413,6 @@ PyAPI_DATA(PyTypeObject) PyUnicodeIter_Type;
#define PyUnicode_2BYTE_DATA(op) ((Py_UCS2*)PyUnicode_DATA(op))
#define PyUnicode_4BYTE_DATA(op) ((Py_UCS4*)PyUnicode_DATA(op))
/* Return true if the string is compact or 0 if not.
No type checks or Ready calls are performed. */
#define PyUnicode_IS_COMPACT(op) \
(((PyASCIIObject*)(op))->state.compact)
/* Return one of the PyUnicode_*_KIND values defined above. */
#define PyUnicode_KIND(op) \
(assert(PyUnicode_Check(op)), \
@ -500,9 +509,9 @@ PyAPI_DATA(PyTypeObject) PyUnicodeIter_Type;
#define PyUnicode_IS_READY(op) (((PyASCIIObject*)op)->state.ready)
/* PyUnicode_READY() does less work than PyUnicode_Ready() in the best
/* PyUnicode_READY() does less work than _PyUnicode_Ready() in the best
case. If the canonical representation is not yet set, it will still call
PyUnicode_Ready().
_PyUnicode_Ready().
Returns 0 on success and -1 on errors. */
#define PyUnicode_READY(op) \
(assert(PyUnicode_Check(op)), \

29
Objects/unicodeobject.c
View File

@ -288,16 +288,14 @@ _PyUnicode_CheckConsistency(void *op)
ascii = (PyASCIIObject *)op;
kind = ascii->state.kind;
if (ascii->state.ascii == 1) {
if (ascii->state.ascii == 1 && ascii->state.compact == 1) {
assert(kind == PyUnicode_1BYTE_KIND);
assert(ascii->state.compact == 1);
assert(ascii->state.ready == 1);
}
else if (ascii->state.compact == 1) {
assert(kind == PyUnicode_1BYTE_KIND
|| kind == PyUnicode_2BYTE_KIND
|| kind == PyUnicode_4BYTE_KIND);
assert(ascii->state.compact == 1);
assert(ascii->state.ascii == 0);
assert(ascii->state.ready == 1);
} else {
@ -305,9 +303,9 @@ _PyUnicode_CheckConsistency(void *op)
PyUnicodeObject *unicode = (PyUnicodeObject *)op;
if (kind == PyUnicode_WCHAR_KIND) {
assert(!ascii->state.compact == 1);
assert(ascii->state.compact == 0);
assert(ascii->state.ascii == 0);
assert(!ascii->state.ready == 1);
assert(ascii->state.ready == 0);
assert(ascii->wstr != NULL);
assert(unicode->data.any == NULL);
assert(compact->utf8 == NULL);
@ -317,10 +315,9 @@ _PyUnicode_CheckConsistency(void *op)
assert(kind == PyUnicode_1BYTE_KIND
|| kind == PyUnicode_2BYTE_KIND
|| kind == PyUnicode_4BYTE_KIND);
assert(!ascii->state.compact == 1);
assert(ascii->state.compact == 0);
assert(ascii->state.ready == 1);
assert(unicode->data.any != NULL);
assert(ascii->state.ascii == 0);
}
}
return 1;
@ -638,7 +635,7 @@ unicode_kind_name(PyObject *unicode)
switch(PyUnicode_KIND(unicode))
{
case PyUnicode_1BYTE_KIND:
if (PyUnicode_IS_COMPACT_ASCII(unicode))
if (PyUnicode_IS_ASCII(unicode))
return "legacy ascii";
else
return "legacy latin1";
@ -654,14 +651,14 @@ unicode_kind_name(PyObject *unicode)
switch(PyUnicode_KIND(unicode))
{
case PyUnicode_1BYTE_KIND:
if (PyUnicode_IS_COMPACT_ASCII(unicode))
if (PyUnicode_IS_ASCII(unicode))
return "ascii";
else
return "compact latin1";
return "latin1";
case PyUnicode_2BYTE_KIND:
return "compact UCS2";
return "UCS2";
case PyUnicode_4BYTE_KIND:
return "compact UCS4";
return "UCS4";
default:
return "<invalid compact kind>";
}
@ -703,7 +700,7 @@ _PyUnicode_Dump(PyObject *op)
if (ascii->wstr == data)
printf("shared ");
printf("wstr=%p", ascii->wstr);
if (!ascii->state.ascii) {
if (!(ascii->state.ascii == 1 && ascii->state.compact == 1)) {
printf(" (%zu), ", compact->wstr_length);
if (!ascii->state.compact && compact->utf8 == unicode->data.any)
printf("shared ");
@ -954,9 +951,9 @@ PyUnicode_CopyCharacters(PyObject *to, Py_ssize_t to_start,
/* check if max_char(from substring) <= max_char(to) */
if (from_kind > to_kind
/* latin1 => ascii */
|| (PyUnicode_IS_COMPACT_ASCII(to)
|| (PyUnicode_IS_ASCII(to)
&& to_kind == PyUnicode_1BYTE_KIND
&& !PyUnicode_IS_COMPACT_ASCII(from)))
&& !PyUnicode_IS_ASCII(from)))
{
/* slow path to check for character overflow */
const Py_UCS4 to_maxchar = PyUnicode_MAX_CHAR_VALUE(to);
@ -1115,10 +1112,12 @@ unicode_ready(PyObject **p_obj, int replace)
_PyUnicode_LENGTH(unicode) = _PyUnicode_WSTR_LENGTH(unicode);
_PyUnicode_STATE(unicode).kind = PyUnicode_1BYTE_KIND;
if (maxchar < 128) {
_PyUnicode_STATE(unicode).ascii = 1;
_PyUnicode_UTF8(unicode) = _PyUnicode_DATA_ANY(unicode);
_PyUnicode_UTF8_LENGTH(unicode) = _PyUnicode_WSTR_LENGTH(unicode);
}
else {
_PyUnicode_STATE(unicode).ascii = 0;
_PyUnicode_UTF8(unicode) = NULL;
_PyUnicode_UTF8_LENGTH(unicode) = 0;
}

5
Tools/gdb/libpython.py
View File

@ -1132,15 +1132,16 @@ class PyUnicodeObjectPtr(PyObjectPtr):
compact = self.field('_base')
ascii = compact['_base']
state = ascii['state']
is_compact_ascii = (int(state['ascii']) and int(state['compact']))
field_length = long(ascii['length'])
if not int(state['ready']):
# string is not ready
may_have_surrogates = True
field_str = ascii['wstr']
if not int(state['ascii']):
if not is_compact_ascii:
field_length = compact('wstr_length')
else:
if int(state['ascii']):
if is_compact_ascii:
field_str = ascii.address + 1
elif int(state['compact']):
field_str = compact.address + 1