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-rw-r--r--Doc/tutorial/errors.rst4
-rw-r--r--Include/unicodeobject.h9
-rw-r--r--Lib/_abcoll.py12
-rw-r--r--Objects/unicodeobject.c99
4 files changed, 103 insertions, 21 deletions
diff --git a/Doc/tutorial/errors.rst b/Doc/tutorial/errors.rst
index fa2d422..5c652a9 100644
--- a/Doc/tutorial/errors.rst
+++ b/Doc/tutorial/errors.rst
@@ -131,8 +131,8 @@ the exception (allowing a caller to handle the exception as well)::
f = open('myfile.txt')
s = f.readline()
i = int(s.strip())
- except IOError as e:
- print("I/O error(%s): %s" % (e.errno, e.strerror))
+ except IOError as (errno, strerror):
+ print "I/O error(%s): %s" % (errno, strerror)
except ValueError:
print("Could not convert data to an integer.")
except:
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index d7808a4..3954289 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -358,7 +358,14 @@ typedef PY_UNICODE_TYPE Py_UNICODE;
#else
-#define Py_UNICODE_ISSPACE(ch) _PyUnicode_IsWhitespace(ch)
+/* Since splitting on whitespace is an important use case, and whitespace
+ in most situations is solely ASCII whitespace, we optimize for the common
+ case by using a quick look-up table with an inlined check.
+ */
+extern const unsigned char _Py_ascii_whitespace[];
+
+#define Py_UNICODE_ISSPACE(ch) \
+ ((ch) < 128U ? _Py_ascii_whitespace[(ch)] : _PyUnicode_IsWhitespace(ch))
#define Py_UNICODE_ISLOWER(ch) _PyUnicode_IsLowercase(ch)
#define Py_UNICODE_ISUPPER(ch) _PyUnicode_IsUppercase(ch)
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index 36d39cf..4ce3df4 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -211,6 +211,12 @@ class Set(metaclass=ABCMeta):
return NotImplemented
return self._from_iterable(value for value in other if value in self)
+ def isdisjoint(self, other):
+ for value in other:
+ if value in self:
+ return False
+ return True
+
def __or__(self, other):
if not isinstance(other, Iterable):
return NotImplemented
@@ -278,6 +284,12 @@ class MutableSet(Set):
"""Return True if it was deleted, False if not there."""
raise NotImplementedError
+ def remove(self, value):
+ """Remove an element. If not a member, raise a KeyError."""
+ if value not in self:
+ raise KeyError(value)
+ self.discard(value)
+
def pop(self):
"""Return the popped value. Raise KeyError if empty."""
it = iter(self)
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 694f3b0..1b35d4e 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -125,6 +125,64 @@ static PyUnicodeObject *unicode_latin1[256];
*/
static const char unicode_default_encoding[] = "utf-8";
+/* Fast detection of the most frequent whitespace characters */
+const unsigned char _Py_ascii_whitespace[] = {
+ 0, 0, 0, 0, 0, 0, 0, 0,
+// case 0x0009: /* HORIZONTAL TABULATION */
+// case 0x000A: /* LINE FEED */
+// case 0x000B: /* VERTICAL TABULATION */
+// case 0x000C: /* FORM FEED */
+// case 0x000D: /* CARRIAGE RETURN */
+ 0, 1, 1, 1, 1, 1, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+// case 0x001C: /* FILE SEPARATOR */
+// case 0x001D: /* GROUP SEPARATOR */
+// case 0x001E: /* RECORD SEPARATOR */
+// case 0x001F: /* UNIT SEPARATOR */
+ 0, 0, 0, 0, 1, 1, 1, 1,
+// case 0x0020: /* SPACE */
+ 1, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* Same for linebreaks */
+static unsigned char ascii_linebreak[] = {
+ 0, 0, 0, 0, 0, 0, 0, 0,
+// 0x000A, /* LINE FEED */
+// 0x000D, /* CARRIAGE RETURN */
+ 0, 0, 1, 0, 0, 1, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+// 0x001C, /* FILE SEPARATOR */
+// 0x001D, /* GROUP SEPARATOR */
+// 0x001E, /* RECORD SEPARATOR */
+ 0, 0, 0, 0, 1, 1, 1, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+
Py_UNICODE
PyUnicode_GetMax(void)
{
@@ -151,8 +209,9 @@ static BLOOM_MASK bloom_linebreak;
#define BLOOM(mask, ch) ((mask & (1 << ((ch) & 0x1F))))
-#define BLOOM_LINEBREAK(ch)\
- (BLOOM(bloom_linebreak, (ch)) && Py_UNICODE_ISLINEBREAK((ch)))
+#define BLOOM_LINEBREAK(ch) \
+ ((ch) < 128U ? ascii_linebreak[(ch)] : \
+ (BLOOM(bloom_linebreak, (ch)) && Py_UNICODE_ISLINEBREAK(ch)))
Py_LOCAL_INLINE(BLOOM_MASK) make_bloom_mask(Py_UNICODE* ptr, Py_ssize_t len)
{
@@ -5602,25 +5661,26 @@ PyObject *split_whitespace(PyUnicodeObject *self,
register Py_ssize_t j;
Py_ssize_t len = self->length;
PyObject *str;
+ register const Py_UNICODE *buf = self->str;
for (i = j = 0; i < len; ) {
/* find a token */
- while (i < len && Py_UNICODE_ISSPACE(self->str[i]))
+ while (i < len && Py_UNICODE_ISSPACE(buf[i]))
i++;
j = i;
- while (i < len && !Py_UNICODE_ISSPACE(self->str[i]))
+ while (i < len && !Py_UNICODE_ISSPACE(buf[i]))
i++;
if (j < i) {
if (maxcount-- <= 0)
break;
- SPLIT_APPEND(self->str, j, i);
- while (i < len && Py_UNICODE_ISSPACE(self->str[i]))
+ SPLIT_APPEND(buf, j, i);
+ while (i < len && Py_UNICODE_ISSPACE(buf[i]))
i++;
j = i;
}
}
if (j < len) {
- SPLIT_APPEND(self->str, j, len);
+ SPLIT_APPEND(buf, j, len);
}
return list;
@@ -5693,18 +5753,19 @@ PyObject *split_char(PyUnicodeObject *self,
register Py_ssize_t j;
Py_ssize_t len = self->length;
PyObject *str;
+ register const Py_UNICODE *buf = self->str;
for (i = j = 0; i < len; ) {
- if (self->str[i] == ch) {
+ if (buf[i] == ch) {
if (maxcount-- <= 0)
break;
- SPLIT_APPEND(self->str, j, i);
+ SPLIT_APPEND(buf, j, i);
i = j = i + 1;
} else
i++;
}
if (j <= len) {
- SPLIT_APPEND(self->str, j, len);
+ SPLIT_APPEND(buf, j, len);
}
return list;
@@ -5753,25 +5814,26 @@ PyObject *rsplit_whitespace(PyUnicodeObject *self,
register Py_ssize_t j;
Py_ssize_t len = self->length;
PyObject *str;
+ register const Py_UNICODE *buf = self->str;
for (i = j = len - 1; i >= 0; ) {
/* find a token */
- while (i >= 0 && Py_UNICODE_ISSPACE(self->str[i]))
+ while (i >= 0 && Py_UNICODE_ISSPACE(buf[i]))
i--;
j = i;
- while (i >= 0 && !Py_UNICODE_ISSPACE(self->str[i]))
+ while (i >= 0 && !Py_UNICODE_ISSPACE(buf[i]))
i--;
if (j > i) {
if (maxcount-- <= 0)
break;
- SPLIT_APPEND(self->str, i + 1, j + 1);
- while (i >= 0 && Py_UNICODE_ISSPACE(self->str[i]))
+ SPLIT_APPEND(buf, i + 1, j + 1);
+ while (i >= 0 && Py_UNICODE_ISSPACE(buf[i]))
i--;
j = i;
}
}
if (j >= 0) {
- SPLIT_APPEND(self->str, 0, j + 1);
+ SPLIT_APPEND(buf, 0, j + 1);
}
if (PyList_Reverse(list) < 0)
goto onError;
@@ -5792,18 +5854,19 @@ PyObject *rsplit_char(PyUnicodeObject *self,
register Py_ssize_t j;
Py_ssize_t len = self->length;
PyObject *str;
+ register const Py_UNICODE *buf = self->str;
for (i = j = len - 1; i >= 0; ) {
- if (self->str[i] == ch) {
+ if (buf[i] == ch) {
if (maxcount-- <= 0)
break;
- SPLIT_APPEND(self->str, i + 1, j + 1);
+ SPLIT_APPEND(buf, i + 1, j + 1);
j = i = i - 1;
} else
i--;
}
if (j >= -1) {
- SPLIT_APPEND(self->str, 0, j + 1);
+ SPLIT_APPEND(buf, 0, j + 1);
}
if (PyList_Reverse(list) < 0)
goto onError;
generated by cgit v0.12 at 2024-09-21 10:57:15 (GMT)