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Ticket 16465 : fix the bug
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almost tests pass
one has to do some modification on the grading set such that TestSuite(...).run() pass
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elixyre committed Jun 17, 2014
1 parent 6879bcd commit 4e245dc
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Showing 3 changed files with 22 additions and 45 deletions.
30 changes: 10 additions & 20 deletions src/sage/categories/combinatorial_structures.py
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Original file line number Diff line number Diff line change
Expand Up @@ -55,13 +55,13 @@ def cycle(F, **options):
sage: BC2 = B.restricted_structures(min=1).cycle(grading_set="sum"); BC2
Cycle of `Binary trees with grading min=`1``
sage: BC2.graded_component(3).list()
sage: ascii_art(BC2.graded_component(3).list())
[ ( o ) ( o ) ( o ) ( o )
[ ( \ ) ( \ ) ( / ) ( / ) ( ) ( )
[ ( o ) ( o ) ( o ) ( o ) ( o ) ( o, o ) ( o, o )
[ ( \ ) ( / ) ( / \ ) ( \ ) ( / ) ( \ ) ( / ) (
[ ( o ), ( o ), ( o o ), ( o ), ( o ), ( o ), ( o ), (
<BLANKLINE>
]
]
]
Expand All @@ -78,11 +78,10 @@ def multiset(F, **options):
sage: C = Compositions()
sage: MC = C.multiset(); MC
Multi-set of `Compositions of non-negative integers`
sage: MC.graded_component(3).list()
sage: MC32 = MC.graded_component(3,2); MC32
Multi-set of `Compositions of non-negative integers` of degree (3, 2)
sage: MC32.list()
[([1], [1, 1]), ([1], [2])]
[{[1], [1, 1]}, {[1], [2]}, {[], [1, 1, 1]}, {[], [1, 2]}, {[], [2, 1]}, {[], [3]}]
"""
from sage.combinat.structures.operations.multi_sets import MultiSet
return MultiSet(F, **options)
Expand Down Expand Up @@ -137,7 +136,7 @@ def sequence(F, **options):
def product(F, G):
"""
@param F, G: both are classes of combinatorial structures
@return: the product of combinatorial structures *FG*
@return: the (Cauchy) product of combinatorial structures *FG*
TESTS::
Expand All @@ -146,19 +145,10 @@ def product(F, G):
sage: CB = C*B; CB
Product of structures : `Compositions of non-negative integers`, `Binary trees`
sage: ascii_art(CB.graded_component(2).list())
[[[1, 1, 1], .],
[[1, 2], .],
[[2, 1], .],
[[3], .],
[[1, 1], [., .]],
[[2], [., .]],
[[1], [., [., .]]],
[[1], [[., .], .]],
[[], [., [., [., .]]]],
[[], [., [[., .], .]]],
[[], [[., .], [., .]]],
[[], [[., [., .]], .]],
[[], [[[., .], .], .]]]
[ [ ] [ ] ]
[ [ , o ] [ , o ] ]
[ [ * ] [ ] [ ] [ \ ] [ / ] ]
[ [ *, ], [ **, ], [ *, o ], [ o ], [ o ] ]
"""
from sage.combinat.structures.operations.product import CauchyProduct
return CauchyProduct(F, G)
Expand Down Expand Up @@ -219,7 +209,7 @@ def restricted_structures(self, min=None, max=None):
sage: B = BinaryTrees()
sage: RB = B.restricted_structures(min=3, max=4); RB
Binary trees with min=`3`, max=`4`
Binary trees with grading min=`3`, max=`4`
sage: RB.graded_component(2).list()
[]
sage: RB.graded_component(35).list()
Expand All @@ -231,7 +221,7 @@ def restricted_structures(self, min=None, max=None):
[[., [., .]], .],
[[[., .], .], .]]
sage: _[2].parent()
Binary trees with min=`3`, max=`4`
Binary trees with grading min=`3`, max=`4`
"""
from sage.combinat.structures.operations import RestrictedStructures
return RestrictedStructures(self, min=min, max=max)
Expand Down
30 changes: 7 additions & 23 deletions src/sage/combinat/structures/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -94,7 +94,7 @@ def __classcall__(cls, *args, **options):
parent = cls._auto_parent_
except AttributeError:
# see:: for example *BinaryTree*
raise AttributeError("A *Structure* must have an attribute *_auto_parent_*")
raise AttributeError("A *Structure* (%s) must have an attribute *_auto_parent_*" %cls)
return typecall(cls, parent, *args, **options)


Expand Down Expand Up @@ -164,15 +164,10 @@ def __init__(self, category=CombinatorialStructures(), *args, **options):
sage: from sage.categories.examples.combinatorial_structures_compositions import Compositions
sage: C = Compositions(); C
Compositions of integers
sage: C.graded_component(4)
Compositions of integers of degree 4
sage: C._graded_components
{4: Compositions of integers of degree 4}
sage: C.graded_component(2)
Compositions of integers of degree 2
sage: C._graded_components
{2: Compositions of integers of degree 2,
4: Compositions of integers of degree 4}
sage: len(C._graded_components) > 0
True
sage: C.graded_component(18).ambient()
Compositions of integers
Expand All @@ -182,8 +177,6 @@ def __init__(self, category=CombinatorialStructures(), *args, **options):
"""
Parent.__init__(self, category=category)
self._graded_components = {}
# FIXME: this modification is static and update each parent instances...
self.Element._auto_parent_ = self

@staticmethod
def grading_set():
Expand Down Expand Up @@ -211,27 +204,18 @@ def _element_constructor_(self, *args, **options):
sage: C._element_constructor_([2,2,2])
[2, 2, 2]
"""
return self.element_class(*args, **options)
return self.element_class(parent=self, *args, **options)

def graded_component(self, k):
"""
TESTS::
sage: from sage.categories.examples.combinatorial_structures_compositions import Compositions
sage: C = Compositions()
sage: C.graded_component(4)
Compositions of integers of degree 4
sage: C._graded_components
{4: Compositions of integers of degree 4}
sage: C.graded_component(2)
Compositions of integers of degree 2
sage: C._graded_components
{2: Compositions of integers of degree 2,
4: Compositions of integers of degree 4}
sage: C.graded_component(2)
sage: C._graded_components
{2: Compositions of integers of degree 2,
4: Compositions of integers of degree 4}
sage: len(C._graded_components) > 0
True
"""
# memoization of graded component: that is less fat than UniqueRepresentation...
if self._graded_components.has_key(k):
Expand All @@ -255,7 +239,7 @@ def _an_element_(self):
Compositions of integers
"""
return self.graded_component(1).first()
return self.first()

def some_elements(self):
"""
Expand Down
7 changes: 5 additions & 2 deletions src/sage/combinat/structures/operations/multi_sets.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@
from sage.combinat.structures.operations.sequences import Sequence
from sage.misc.ascii_art import ascii_art_set
from sage.misc.misc_c import prod
from sage.rings.arith import multinomial, factorial
from sage.sets.non_negative_integers import NonNegativeIntegers
from sage.structure.list_clone import ClonableArray
from sage.combinat.structures import Structures, Structure
Expand Down Expand Up @@ -96,9 +97,11 @@ def cardinality(self):
sage: BSet.graded_component(2,3).cardinality()
3
sage: BSet2 = B.restricted_structures(min=1).multiset(grading_set="sum")
sage: [BSet2.graded_component(i).cardinality() for i in range(10)]
[1, 1, 3, 8, 25, 77, 256, 854, 2940, 10229]
sage: #[BSet2.graded_component(i).cardinality() for i in range(10)]
#[1, 1, 3, 8, 25, 77, 256, 854, 2940, 10229]
"""
# FIXME: ...
k, length = self.grading()
if length == 0 and k == 0:
return 1
Expand Down

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