multimap.sa
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-- Copyright (C) 1994 by International Computer Science Institute --
-- This file is part of the GNU Sather library. It is free software; you may --
-- redistribute and/or modify it under the terms of the GNU Library General --
-- Public License (LGPL) as published by the Free Software Foundation; --
-- either version 2 of the license, or (at your option) any later version. --
-- This library is distributed in the hope that it will be useful, but --
-- WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See Doc/LGPL for more details. --
-- The license text is also available from: Free Software Foundation, Inc., --
-- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA --
--------------> Please email comments to <bug-sather@gnu.org> <--------------
abstract class $RO_MULTIMAP{ITP,TTP} < $RO_BAG{TUP{ITP,TTP}}
abstract class $RO_MULTIMAP{ITP,TTP} < $RO_BAG{TUP{ITP,TTP}}
-- An unordered container of tuples of {index:ITP,target:TTP}.
-- It may be viewed as a mapping from indices of type ITP to
-- targets fo type TTP, where each index may have multiple targets
-- It is essentially a one-to-many mapping, that allows for
-- repetitions.
--
-- Definition: A multimap is simply a bag of tuples. It imposes
-- no additional constraints, but does provide some extra accessing
-- mechanisms
--
-- This is a read-only abstraction in which no modifying operations
-- are available. However, subtypes may provide modifying operations
-- For documentation see:
-- The overall organization of container classes
-- The organization and usage of multimaps and related classes
--
-- In the comments that follow, underscores are used to indicate
-- a value that takes on all possible bindings.
is
add(k:ITP,e:TTP):$RO_MULTIMAP{ITP,TTP};
-- Shortcut for for add(#TUP{ITP,TTP}(k,e))
delete(k:ITP,e:TTP):$RO_MULTIMAP{ITP,TTP};
-- Shortcut for for delete(e:TUP{ITP,TTP})
delete_ind(k:ITP):$RO_MULTIMAP{ITP,TTP};
-- Returns a new multimap in which all occurences of the tuple
-- (k,_) have been deleted
has_ind(k:ITP): BOOL;
-- Returns true if this map has an index equal to 'k'
--
-- return true iff self contains a tuple (k,_)
n_targets(k:ITP): INT;
-- Returns the number of targets associated with the index 'k'
n_ind:INT;
-- Return the number of unique indices in 'self'
--
-- return size of {i s.t. self.has((i,_))}
ind!:ITP;
-- Yields all the indices of self i.e. first elements of every
-- tuple in self - but without repetitions, in an unspecified order
--
-- yield all i s.t. self.has((i,_))
target!(once k:ITP):TTP;
-- Yields all the target associated with index 'k'
--
-- yield all t s.t. self.has((k,t))
pair!: TUP{ITP,TTP};
-- Yields all elements of self in an unspecified order. An alias for
-- "elt!"
add(e:TUP{ITP,TTP}):$RO_MULTIMAP{ITP,TTP};
-- Result is a new multimap containing all the elements of self and 'e'
delete(e:TUP{ITP,TTP}):$RO_MULTIMAP{ITP,TTP};
-- Result is a new multimap containing all the elements of self except for
-- an element equal to 'e', if one exists. If more than one element
-- is equal to 'e', delete only one of them
delete_all(e:TUP{ITP,TTP}):$RO_MULTIMAP{ITP,TTP};
-- Result is a new multimap ontaining all the elements of self except for
-- any elements equal to 'e'
count(e:TUP{ITP,TTP}):INT;
-- Return the number of occurences of 'e' in self
unique!:TUP{ITP,TTP};
-- Yield the unique elements of self. Equivalent to self.as_set.elt!
n_unique: INT;
-- Returns the number of unique elements in the bag
is_subset_of(arg: $RO_BAG{TUP{ITP,TTP}}): BOOL;
-- Returns true if 'self' is a subset of 'arg'. For elements that occur
-- multiple times, the number of occurences of the element in 'arg'
-- must be greater than or equal to the number of occurences in self
--
-- return true iff for all e in self: count(e) <= arg.count(e)
concat(arg:$ELT{TUP{ITP,TTP}}):$RO_MULTIMAP{ITP,TTP};
-- Returns a multimap containing all the elements of self and 'arg'.
-- For elements that occur multiple times, the result contains
-- the sum of the number of occurences in self and 'arg'
--
-- result=mmap of all e s.t. result.count(e)=self.count(e)+arg.count(e)
union(arg: $RO_BAG{TUP{ITP,TTP}}): $RO_MULTIMAP{ITP,TTP};
-- Returns a multimap containing the elements of 'self' and 'arg'.
-- For elements that occur multiple times, the result contains
-- the maximum number of occurences in either self or 'arg'
--
-- result=mmap of all e s.t. result.count(e)=max(self.count(e),arg.count(e))
intersection(arg: $RO_BAG{TUP{ITP,TTP}}):$RO_MULTIMAP{ITP,TTP};
-- Returns a multimap containing the elements common to self and 'arg'
-- For elements that occur multiple times, the result contains
-- the minimum number of occurrences in either self or 'arg'.
--
-- result=mmap of all e s.t. result.count(e)=min(self.count(e),arg.count(e))
is_empty:BOOL;
-- Returns true if the size of the container = 0
size: INT;
-- Number of elements contained
copy: SAME;
-- Return a copy of the current container
has(e: TUP{ITP,TTP}): BOOL;
-- True if the container contains the element "e"
equals(c:$RO_BAG{TUP{ITP,TTP}}):BOOL;
-- Return true if both containers contain the same elements with
-- the same number of repetitions, irrespective of the order of the
-- elements
as_array:ARRAY{TUP{ITP,TTP}};
-- Return the elements of the container in an array
elt!:TUP{ITP,TTP};
-- Yield all the elements of self. The order is not defined.
str:STR;
-- Yield a string version of self
end;
abstract class $VMULTIMAP{ITP,TTP}<$RO_MULTIMAP{ITP,TTP},$VBAG{TUP{ITP,TTP}}
abstract class $VMULTIMAP{ITP,TTP}<$RO_MULTIMAP{ITP,TTP},$VBAG{TUP{ITP,TTP}}
-- An unordered container of tuples of {index:ITP,target:TTP} such
-- that the indices of all tuples are unique. Indices may be used
-- to retrieve targets
--
-- IMPORTANT: This is a value abstraction and is stricter than the
-- read-only abstraction. Subtypes must not support *any*
-- operations that modify self. The language cannot enforce this
-- restriction.
--
-- For pointers to other documentation please see the class comment in
-- the read-only abstraction
is
add(k:ITP,e:TTP):$VMULTIMAP{ITP,TTP};
-- Shortcut for for add(#TUP{ITP,TTP}(k,e))
delete(k:ITP,e:TTP):$VMULTIMAP{ITP,TTP};
-- Shortcut for for delete(e:TUP{ITP,TTP})
delete_ind(k:ITP):$VMULTIMAP{ITP,TTP};
-- Returns a new multimap in which all occurences of the tuple
-- (k,_) have been deleted
has_ind(k:ITP): BOOL;
-- Returns true if this map has an index equal to 'k'
-- result is true iff self contains a tuple (k,_)
n_targets(k:ITP): INT;
-- Returns the number of targets associated with the index 'k'
ind!:ITP;
-- Yields all the indices of self i.e. first elements of every
-- tuple in self without repetitions, in an unspecified order
-- yield all i s.t. self.has((i,_))
target!(once k:ITP):TTP;
-- Yields all the target associated with index 'k'
--
-- yield all t s.t. self.has((k,t))
pair!: TUP{ITP,TTP};
-- Yields all elements of self in an unspecified order. An alias for
-- "elt!"
add(e:TUP{ITP,TTP}):$VMULTIMAP{ITP,TTP};
-- Result is a new multimap containing all the elements of self and 'e'
delete(e:TUP{ITP,TTP}):$VMULTIMAP{ITP,TTP};
-- Result is a new multimap containing all the elements of self except for
-- an element equal to 'e', if one exists. If more than one element
-- is equal to 'e', delete only one of them
delete_all(e:TUP{ITP,TTP}):$VMULTIMAP{ITP,TTP};
-- Result is a new multimap containing all the elements of self except for
-- all elements equal to 'e'
count(e:TUP{ITP,TTP}):INT;
-- Return the number of occurences of 'e' in self
unique!:TUP{ITP,TTP};
-- Yield the unique elements of self. Equivalent to self.as_set.elt!
n_unique: INT;
-- Returns the number of unique elements in the bag
--
-- result = number of unique elements
is_subset_of(arg: $RO_BAG{TUP{ITP,TTP}}): BOOL;
-- Returns true if 'self' is a subset of 'arg'. For elements that occur
-- multiple times, the number of occurences of the element in 'arg'
-- must be greater than or equal to the number of occurences in self
--
-- result=true iff for all e in self: count(e) <= arg.count(e)
concat(arg:$ELT{TUP{ITP,TTP}}):$VMULTIMAP{ITP,TTP};
-- Returns a bag containing all the elements of self and 'arg'.
-- For elements that occur multiple times, the result contains
-- the sum of the number of occurences in self and 'arg'
--
-- result=mmap of all e s.t. result.count(e)=self.count(e)+arg.count(e)
union(arg: $RO_BAG{TUP{ITP,TTP}}): $VMULTIMAP{ITP,TTP};
-- Returns a multimap containing the elements of 'self' and 'arg'.
-- For elements that occur multiple times, the result contains
-- the maximum number of occurences in either self or 'arg'
--
-- result=mmap of all e s.t. result.count(e)=max(self.count(e),arg.count(e))
intersection(arg: $RO_BAG{TUP{ITP,TTP}}):$VMULTIMAP{ITP,TTP};
-- Returns a multimap containing the elements common to self and 'arg'
-- For elements that occur multiple times, the result contains
-- the minimum number of occurrences in either self or 'arg'.
--
-- result=mmap of all e s.t. result.count(e)=min(self.count(e),arg.count(e))
is_empty:BOOL;
-- Returns true if the size of the container = 0
size: INT;
-- Number of elements contained
copy: SAME;
-- Return a copy of the current container
has(e: TUP{ITP,TTP}): BOOL;
-- True if the container contains the element "e"
equals(c:$RO_BAG{TUP{ITP,TTP}}):BOOL;
-- Return true if both containers contain the same elements with
-- the same number of repetitions, irrespective of the order of the
-- elements
as_array:ARRAY{TUP{ITP,TTP}};
-- Return the elements of the container in an array
elt!:TUP{ITP,TTP};
-- Yield all the elements of self. The order is not defined.
str:STR;
-- Yield a string version of self
end;
abstract class $MULTIMAP{ITP,TTP}<$RO_MULTIMAP{ITP,TTP}, $VAR
abstract class $MULTIMAP{ITP,TTP}<$RO_MULTIMAP{ITP,TTP}, $VAR
-- An unordered container of tuples of {index:ITP,target:TTP}.
-- It may be viewed as a mapping from indices of type ITP to
-- targets fo type TTP, where each index may have multiple targets
-- It is essentially a one-to-many mapping, that allows for
-- repetitions.
--
-- This is a reference abstraction and supports operations that modify
-- self. Instances of subtypes may be viewed as variables with a value
-- of $VMULTIMAP{ITP,TTP}
--
-- For pointers to other documentation please see the class comment in
-- the read-only abstraction of $RO_MULTIMAP{ITP,TTP}
--
is
as_value:$VMULTIMAP{ITP,TTP};
-- Return the current value associated with self
aset(k:ITP,e:TTP);
-- Adds the tuple (k,e) to self, if it does not already exist
-- self<-initial(self).insert({k,e})
delete(k:ITP,e:TTP);
-- Removes the tuple (k,e) from self if it exists
-- self<-initial(self).delete({k,e})
delete(k:ITP);
-- Removes any tuple (k,_) from self if it exists
-- self<-initial(self).delete(k)
clear;
-- Delete all elements from the multimap
to_union(arg: $RO_MULTIMAP{ITP,TTP});
-- Turn this bag into the union of self and 'arg'
-- self <- initial(self).union(arg)
to_intersection(arg:$RO_MULTIMAP{ITP,TTP});
-- Turn this bag into the intersection of self and 'arg'
-- self <- initial(self).intersection(arg)
add(k:ITP,e:TTP):$MULTIMAP{ITP,TTP};
-- Shortcut for for add(#TUP{ITP,TTP}(k,e))
delete(k:ITP,e:TTP):$MULTIMAP{ITP,TTP};
-- Shortcut for for delete(e:TUP{ITP,TTP})
delete_ind(k:ITP):$MULTIMAP{ITP,TTP};
-- Returns a new multimap in which all occurences of the tuple
-- (k,_) have been deleted
has_ind(k:ITP): BOOL;
-- Returns true if this map has an index equal to 'k'
--
-- result is true iff self contains a tuple (k,_)
n_targets(k:ITP): INT;
-- Returns the number of targets associated with the index 'k'
--
-- result is targets.as_set.size
ind!:ITP;
-- Yields all the indices of self i.e. first elements of every
-- tuple in self without repetitions
--
-- yield all i s.t. self.has((i,_))
target!(once k:ITP):TTP;
-- Yields all the targets associated with index 'k', with repetitions
--
-- yield all t s.t. self.has((k,t))
pair!: TUP{ITP,TTP};
-- Yields all elements of self in an unspecified order. An alias for
-- "elt!"
add(e:TUP{ITP,TTP}):$MULTIMAP{ITP,TTP};
-- Result is a new bag containing all the elements of self and 'e'
delete(e:TUP{ITP,TTP}):$MULTIMAP{ITP,TTP};
-- Result is a new multimap containing all the elements of self except for
-- an element equal to 'e', if one exists. If more than one element
-- is equal to 'e', delete only one of them
delete_all(e:TUP{ITP,TTP}):$MULTIMAP{ITP,TTP};
-- Result is a new multimap containing all the elements of self except for
-- all elements equal to 'e'
count(e:TUP{ITP,TTP}):INT;
-- Return the number of occurences of 'e' in self
unique!:TUP{ITP,TTP};
-- Yield the unique elements of self. Equivalent to self.as_set.elt!
n_unique: INT;
-- Returns the number of unique elements in the bag
--
-- result = number of unique elements
is_subset_of(arg: $RO_BAG{TUP{ITP,TTP}}): BOOL;
-- Returns true if 'self' is a subset of 'arg'. For elements that occur
-- multiple times, the number of occurences of the element in 'arg'
-- must be greater than or equal to the number of occurences in self
--
-- result=true iff for all e in self: count(e) <= arg.count(e)
concat(arg:$RO_BAG{TUP{ITP,TTP}}):$MULTIMAP{ITP,TTP};
-- Returns a multimap containing all the elements of self and 'arg'.
-- For elements that occur multiple times, the result contains
-- the sum of the number of occurences in self and 'arg'
--
-- result=mmap of all e s.t. result.count(e)=self.count(e)+arg.count(e)
union(arg: $RO_BAG{TUP{ITP,TTP}}):$MULTIMAP{ITP,TTP};
-- Returns a multimap containing the elements of 'self' and 'arg'.
-- For elements that occur multiple times, the result contains
-- the maximum number of occurences in either self or 'arg'
--
-- result=map of all e s.t. result.count(e)=max(self.count(e),arg.count(e))
intersection(arg: $RO_BAG{TUP{ITP,TTP}}):$MULTIMAP{ITP,TTP};
-- Returns a bag containing the elements common to self and 'arg'
-- For elements that occur multiple times, the result contains
-- the minimum number of occurrences in either self or 'arg'.
--
-- result=map of all e s.t. result.count(e)=min(self.count(e),arg.count(e))
is_empty:BOOL;
-- Returns true if the size of the container = 0
size: INT;
-- Number of elements contained
copy: SAME;
-- Return a copy of the current container
has(e: TUP{ITP,TTP}): BOOL;
-- True if the container contains the element "e"
equals(c:$RO_BAG{TUP{ITP,TTP}}):BOOL;
-- Return true if both containers contain the same elements with
-- the same number of repetitions, irrespective of the order of the
-- elements
as_array:ARRAY{TUP{ITP,TTP}};
-- Return the elements of the container in an array
elt!:TUP{ITP,TTP};
-- Yield all the elements of self. The order is not defined.
str:STR;
-- Yield a string version of self
end; -- $MULTIMAP{ITP,TTP}