mirror of
https://github.com/python/cpython.git
synced 2024-11-25 02:44:06 +08:00
Issue #23741: Slightly refactor the pprint module to make it a little more
extesible. No public API is added.
This commit is contained in:
Serhiy Storchaka
parent
72bd327db0
commit
8e2aa88a40
228
Lib/pprint.py
228
Lib/pprint.py
@ -152,130 +152,141 @@ class PrettyPrinter:
|
||||
return readable and not recursive
|
||||
|
||||
def _format(self, object, stream, indent, allowance, context, level):
|
||||
level = level + 1
|
||||
objid = id(object)
|
||||
if objid in context:
|
||||
stream.write(_recursion(object))
|
||||
self._recursive = True
|
||||
self._readable = False
|
||||
return
|
||||
rep = self._repr(object, context, level - 1)
|
||||
typ = type(object)
|
||||
rep = self._repr(object, context, level)
|
||||
max_width = self._width - indent - allowance
|
||||
sepLines = len(rep) > max_width
|
||||
if len(rep) > max_width:
|
||||
p = self._dispatch.get(type(object).__repr__, None)
|
||||
if p is not None:
|
||||
context[objid] = 1
|
||||
p(self, object, stream, indent, allowance, context, level + 1)
|
||||
del context[objid]
|
||||
return
|
||||
elif isinstance(object, dict):
|
||||
context[objid] = 1
|
||||
self._pprint_dict(object, stream, indent, allowance,
|
||||
context, level + 1)
|
||||
del context[objid]
|
||||
return
|
||||
stream.write(rep)
|
||||
|
||||
_dispatch = {}
|
||||
|
||||
def _pprint_dict(self, object, stream, indent, allowance, context, level):
|
||||
write = stream.write
|
||||
write('{')
|
||||
if self._indent_per_level > 1:
|
||||
write((self._indent_per_level - 1) * ' ')
|
||||
length = len(object)
|
||||
if length:
|
||||
if isinstance(object, _OrderedDict):
|
||||
items = list(object.items())
|
||||
else:
|
||||
items = sorted(object.items(), key=_safe_tuple)
|
||||
self._format_dict_items(items, stream, indent, allowance + 1,
|
||||
context, level)
|
||||
write('}')
|
||||
|
||||
if sepLines:
|
||||
r = getattr(typ, "__repr__", None)
|
||||
if issubclass(typ, dict):
|
||||
write('{')
|
||||
if self._indent_per_level > 1:
|
||||
write((self._indent_per_level - 1) * ' ')
|
||||
length = len(object)
|
||||
if length:
|
||||
context[objid] = 1
|
||||
if issubclass(typ, _OrderedDict):
|
||||
items = list(object.items())
|
||||
else:
|
||||
items = sorted(object.items(), key=_safe_tuple)
|
||||
self._format_dict_items(items, stream,
|
||||
indent + self._indent_per_level,
|
||||
allowance + 1,
|
||||
context, level)
|
||||
del context[objid]
|
||||
write('}')
|
||||
return
|
||||
_dispatch[dict.__repr__] = _pprint_dict
|
||||
_dispatch[_OrderedDict.__repr__] = _pprint_dict
|
||||
|
||||
if ((issubclass(typ, list) and r is list.__repr__) or
|
||||
(issubclass(typ, tuple) and r is tuple.__repr__) or
|
||||
(issubclass(typ, set) and r is set.__repr__) or
|
||||
(issubclass(typ, frozenset) and r is frozenset.__repr__)
|
||||
):
|
||||
length = len(object)
|
||||
if issubclass(typ, list):
|
||||
write('[')
|
||||
endchar = ']'
|
||||
elif issubclass(typ, tuple):
|
||||
write('(')
|
||||
if length == 1:
|
||||
endchar = ',)'
|
||||
else:
|
||||
endchar = ')'
|
||||
else:
|
||||
if not length:
|
||||
write(rep)
|
||||
return
|
||||
if typ is set:
|
||||
write('{')
|
||||
endchar = '}'
|
||||
else:
|
||||
write(typ.__name__)
|
||||
write('({')
|
||||
endchar = '})'
|
||||
indent += len(typ.__name__) + 1
|
||||
object = sorted(object, key=_safe_key)
|
||||
if self._indent_per_level > 1:
|
||||
write((self._indent_per_level - 1) * ' ')
|
||||
if length:
|
||||
context[objid] = 1
|
||||
self._format_items(object, stream,
|
||||
indent + self._indent_per_level,
|
||||
allowance + len(endchar),
|
||||
context, level)
|
||||
del context[objid]
|
||||
write(endchar)
|
||||
return
|
||||
def _pprint_list(self, object, stream, indent, allowance, context, level):
|
||||
stream.write('[')
|
||||
self._format_items(object, stream, indent, allowance + 1,
|
||||
context, level)
|
||||
stream.write(']')
|
||||
|
||||
if issubclass(typ, str) and len(object) > 0 and r is str.__repr__:
|
||||
chunks = []
|
||||
lines = object.splitlines(True)
|
||||
if level == 1:
|
||||
indent += 1
|
||||
allowance += 1
|
||||
max_width1 = max_width = self._width - indent
|
||||
for i, line in enumerate(lines):
|
||||
rep = repr(line)
|
||||
if i == len(lines) - 1:
|
||||
max_width1 -= allowance
|
||||
if len(rep) <= max_width1:
|
||||
chunks.append(rep)
|
||||
else:
|
||||
# A list of alternating (non-space, space) strings
|
||||
parts = re.findall(r'\S*\s*', line)
|
||||
assert parts
|
||||
assert not parts[-1]
|
||||
parts.pop() # drop empty last part
|
||||
max_width2 = max_width
|
||||
current = ''
|
||||
for j, part in enumerate(parts):
|
||||
candidate = current + part
|
||||
if j == len(parts) - 1 and i == len(lines) - 1:
|
||||
max_width2 -= allowance
|
||||
if len(repr(candidate)) > max_width2:
|
||||
if current:
|
||||
chunks.append(repr(current))
|
||||
current = part
|
||||
else:
|
||||
current = candidate
|
||||
_dispatch[list.__repr__] = _pprint_list
|
||||
|
||||
def _pprint_tuple(self, object, stream, indent, allowance, context, level):
|
||||
stream.write('(')
|
||||
endchar = ',)' if len(object) == 1 else ')'
|
||||
self._format_items(object, stream, indent, allowance + len(endchar),
|
||||
context, level)
|
||||
stream.write(endchar)
|
||||
|
||||
_dispatch[tuple.__repr__] = _pprint_tuple
|
||||
|
||||
def _pprint_set(self, object, stream, indent, allowance, context, level):
|
||||
if not len(object):
|
||||
stream.write(repr(object))
|
||||
return
|
||||
typ = object.__class__
|
||||
if typ is set:
|
||||
stream.write('{')
|
||||
endchar = '}'
|
||||
else:
|
||||
stream.write(typ.__name__ + '({')
|
||||
endchar = '})'
|
||||
indent += len(typ.__name__) + 1
|
||||
object = sorted(object, key=_safe_key)
|
||||
self._format_items(object, stream, indent, allowance + len(endchar),
|
||||
context, level)
|
||||
stream.write(endchar)
|
||||
|
||||
_dispatch[set.__repr__] = _pprint_set
|
||||
_dispatch[frozenset.__repr__] = _pprint_set
|
||||
|
||||
def _pprint_str(self, object, stream, indent, allowance, context, level):
|
||||
write = stream.write
|
||||
if not len(object):
|
||||
write(repr(object))
|
||||
return
|
||||
chunks = []
|
||||
lines = object.splitlines(True)
|
||||
if level == 1:
|
||||
indent += 1
|
||||
allowance += 1
|
||||
max_width1 = max_width = self._width - indent
|
||||
for i, line in enumerate(lines):
|
||||
rep = repr(line)
|
||||
if i == len(lines) - 1:
|
||||
max_width1 -= allowance
|
||||
if len(rep) <= max_width1:
|
||||
chunks.append(rep)
|
||||
else:
|
||||
# A list of alternating (non-space, space) strings
|
||||
parts = re.findall(r'\S*\s*', line)
|
||||
assert parts
|
||||
assert not parts[-1]
|
||||
parts.pop() # drop empty last part
|
||||
max_width2 = max_width
|
||||
current = ''
|
||||
for j, part in enumerate(parts):
|
||||
candidate = current + part
|
||||
if j == len(parts) - 1 and i == len(lines) - 1:
|
||||
max_width2 -= allowance
|
||||
if len(repr(candidate)) > max_width2:
|
||||
if current:
|
||||
chunks.append(repr(current))
|
||||
if len(chunks) == 1:
|
||||
write(rep)
|
||||
return
|
||||
if level == 1:
|
||||
write('(')
|
||||
for i, rep in enumerate(chunks):
|
||||
if i > 0:
|
||||
write('\n' + ' '*indent)
|
||||
write(rep)
|
||||
if level == 1:
|
||||
write(')')
|
||||
return
|
||||
write(rep)
|
||||
current = part
|
||||
else:
|
||||
current = candidate
|
||||
if current:
|
||||
chunks.append(repr(current))
|
||||
if len(chunks) == 1:
|
||||
write(rep)
|
||||
return
|
||||
if level == 1:
|
||||
write('(')
|
||||
for i, rep in enumerate(chunks):
|
||||
if i > 0:
|
||||
write('\n' + ' '*indent)
|
||||
write(rep)
|
||||
if level == 1:
|
||||
write(')')
|
||||
|
||||
_dispatch[str.__repr__] = _pprint_str
|
||||
|
||||
def _format_dict_items(self, items, stream, indent, allowance, context,
|
||||
level):
|
||||
write = stream.write
|
||||
indent += self._indent_per_level
|
||||
delimnl = ',\n' + ' ' * indent
|
||||
last_index = len(items) - 1
|
||||
for i, (key, ent) in enumerate(items):
|
||||
@ -291,6 +302,9 @@ class PrettyPrinter:
|
||||
|
||||
def _format_items(self, items, stream, indent, allowance, context, level):
|
||||
write = stream.write
|
||||
indent += self._indent_per_level
|
||||
if self._indent_per_level > 1:
|
||||
write((self._indent_per_level - 1) * ' ')
|
||||
delimnl = ',\n' + ' ' * indent
|
||||
delim = ''
|
||||
width = max_width = self._width - indent + 1
|
||||
|
||||
Loading…
Reference in New Issue
Block a user