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Tweak formatting and docs for pretty printers

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* python/libstdcxx/v6/printers.py (UniquePointerPrinter.to_string):
	Remove redundant parentheses.
	(RbtreeIterator, StdRbtreeIteratorPrinter): Add docstrings.
	(StdForwardListPrinter.to_string): Remove redundant parentheses.
	(StdExpOptionalPrinter.to_string): Use string formatting instead of
	concatenation.
	(StdVariantPrinter.to_string, StdNodeHandlePrinter.to_string)
	(TemplateTypePrinter): Adjust whitespace.

From-SVN: r243689
This commit is contained in:
Jonathan Wakely 2016-12-15 12:45:47 +00:00 committed by Jonathan Wakely
parent 0376e86bfc
commit 7224c6a997
2 changed files with 26 additions and 10 deletions
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9
libstdc++-v3/ChangeLog
View File

@ -1,5 +1,14 @@
2016-12-15 Jonathan Wakely <jwakely@redhat.com>
* python/libstdcxx/v6/printers.py (UniquePointerPrinter.to_string):
Remove redundant parentheses.
(RbtreeIterator, StdRbtreeIteratorPrinter): Add docstrings.
(StdForwardListPrinter.to_string): Remove redundant parentheses.
(StdExpOptionalPrinter.to_string): Use string formatting instead of
concatenation.
(StdVariantPrinter.to_string, StdNodeHandlePrinter.to_string)
(TemplateTypePrinter): Adjust whitespace.
* python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__init__): Use
correct element type for unique_ptr<T[]>.
(UniquePtrGetWorker._supports, UniquePtrDerefWorker._supports): New

27
libstdc++-v3/python/libstdcxx/v6/printers.py
View File

@ -133,8 +133,8 @@ class UniquePointerPrinter:
v = self.val['_M_t']['_M_head_impl']
else:
raise ValueError("Unsupported implementation for unique_ptr: %s" % self.val.type.fields()[0].type.tag)
return ('std::unique_ptr<%s> containing %s' % (str(v.type.target()),
str(v)))
return 'std::unique_ptr<%s> containing %s' % (str(v.type.target()),
str(v))
def get_value_from_aligned_membuf(buf, valtype):
"""Returns the value held in a __gnu_cxx::__aligned_membuf."""
@ -428,6 +428,11 @@ class StdStackOrQueuePrinter:
return None
class RbtreeIterator(Iterator):
"""
Turn an RB-tree-based container (std::map, std::set etc.) into
a Python iterable object.
"""
def __init__(self, rbtree):
self.size = rbtree['_M_t']['_M_impl']['_M_node_count']
self.node = rbtree['_M_t']['_M_impl']['_M_header']['_M_left']
@ -480,7 +485,7 @@ def get_value_from_Rb_tree_node(node):
# std::map::iterator), and has nothing to do with the RbtreeIterator
# class above.
class StdRbtreeIteratorPrinter:
"Print std::map::iterator"
"Print std::map::iterator, std::set::iterator, etc."
def __init__ (self, typename, val):
self.val = val
@ -891,8 +896,8 @@ class StdForwardListPrinter:
def to_string(self):
if self.val['_M_impl']['_M_head']['_M_next'] == 0:
return 'empty %s' % (self.typename)
return '%s' % (self.typename)
return 'empty %s' % self.typename
return '%s' % self.typename
class SingleObjContainerPrinter(object):
"Base class for printers of containers of single objects"
@ -994,9 +999,10 @@ class StdExpOptionalPrinter(SingleObjContainerPrinter):
def to_string (self):
if self.contained_value is None:
return self.typename + " [no contained value]"
return "%s [no contained value]" % self.typename
if hasattr (self.visualizer, 'children'):
return self.typename + " containing " + self.visualizer.to_string ()
return "%s containing %s" % (self.typename,
self.visualizer.to_string())
return self.typename
class StdVariantPrinter(SingleObjContainerPrinter):
@ -1032,7 +1038,8 @@ class StdVariantPrinter(SingleObjContainerPrinter):
if self.contained_value is None:
return "%s [no contained value]" % self.typename
if hasattr(self.visualizer, 'children'):
return "%s [index %d] containing %s" % (self.typename, self.index, self.visualizer.to_string())
return "%s [index %d] containing %s" % (self.typename, self.index,
self.visualizer.to_string())
return "%s [index %d]" % (self.typename, self.index)
class StdNodeHandlePrinter(SingleObjContainerPrinter):
@ -1060,7 +1067,6 @@ class StdNodeHandlePrinter(SingleObjContainerPrinter):
'array')
def to_string(self):
desc = 'node handle for '
if not self.is_rb_tree_node:
desc += 'unordered '
@ -1230,7 +1236,8 @@ class Printer(object):
libstdcxx_printer = None
class TemplateTypePrinter(object):
r"""A type printer for class templates.
r"""
A type printer for class templates.
Recognizes type names that match a regular expression.
Replaces them with a formatted string which can use replacement field