Computer algebra system for field theory problems
Public Member Functions | Private Types | Private Member Functions | Private Attributes | List of all members
cadabra::collect_factors Class Reference


Collect symbolically equal factors in a product.

#include <collect_factors.hh>

Inheritance diagram for cadabra::collect_factors:
cadabra::Algorithm cadabra::IndexClassifier

Public Member Functions

 collect_factors (const Kernel &, Ex &)
virtual bool can_apply (iterator)
virtual result_t apply (iterator &)
- Public Member Functions inherited from cadabra::Algorithm
 Algorithm (const Kernel &, Ex &)
 Initialise the algorithm with a reference to the expression tree, but do not yet do anything with this tree. More...
virtual ~Algorithm ()
void set_progress_monitor (ProgressMonitor *)
 Provide the algorithm with a ProgressMonitor object on which to register (nested) progress information, to be reported out-of-band to a client. More...
result_t apply_generic (bool deep=true, bool repeat=false, unsigned int depth=0)
 The main entry points for running algorithms, which traverse the tree post-order ('child before parent'). More...
result_t apply_generic (iterator &, bool deep, bool repeat, unsigned int depth)
result_t apply_pre_order (bool repeat=false)
 Apply algorithm with alternative traversal: starting from the top node, traverse the tree pre-order ('parent before child') and once the algorithm acts at a given node, do not traverse the subtree below anymore. More...
bool check_consistency (iterator) const
 Given an expression top node, check index consistency. More...
bool check_index_consistency (iterator) const
bool check_degree_consistency (iterator) const
 Given an expression top node, check differential form degree consistency. More...
void report_progress (const std::string &, int todo, int done, int count=2)
index_iterator begin_index (iterator it) const
index_iterator end_index (iterator it) const
unsigned int number_of_indices (iterator it)
std::string get_index_set_name (iterator it) const
bool rename_replacement_dummies (iterator, bool still_inside_algo=false)
 Rename the dummies in the sub-tree starting with head at the given iterator. More...
- Public Member Functions inherited from cadabra::IndexClassifier
 IndexClassifier (const Kernel &)
void fill_index_position_map (Ex::iterator, const index_map_t &, index_position_map_t &) const
 Routines to find and classify all indices in an expression, taking into account sums and products. More...
void fill_map (index_map_t &, Ex::sibling_iterator, Ex::sibling_iterator) const
void print_classify_indices (std::ostream &, Ex::iterator) const
void determine_intersection (index_map_t &one, index_map_t &two, index_map_t &target, bool move_out=false) const
 Determine those indices in 'two' which have a name which is identical to an index name occurring in 'one'. More...
void classify_add_index (Ex::iterator it, index_map_t &ind_free, index_map_t &ind_dummy) const
void classify_indices_up (Ex::iterator, index_map_t &ind_free, index_map_t &ind_dummy) const
 Classify indices bottom-up, that is, given a node, it goes up the tree to find. More...
void classify_indices (Ex::iterator, index_map_t &ind_free, index_map_t &ind_dummy) const
 Classify indices top-down, that is, finds the free indices and all dummy index pairs used in the full subtree below a given node. More...
int max_numbered_name_one (const std::string &nm, const index_map_t *one) const
int max_numbered_name (const std::string &, const index_map_t *m1, const index_map_t *m2=0, const index_map_t *m3=0, const index_map_t *m4=0, const index_map_t *m5=0) const
Ex get_dummy (const list_property *, const index_map_t *m1, const index_map_t *m2=0, const index_map_t *m3=0, const index_map_t *m4=0, const index_map_t *m5=0) const
Ex get_dummy (const list_property *, Ex::iterator) const
Ex get_dummy (const list_property *, Ex::iterator, Ex::iterator) const
bool index_in_set (Ex, const index_map_t *) const
void dumpmap (std::ostream &, const index_map_t &) const
index_map_t::iterator find_modulo_parent_rel (Ex::iterator it, index_map_t &imap) const
 Find an index in the set, not taking into account index position. More...

Private Types

typedef std::multimap< hashval_t, sibling_iteratorfactor_hash_t
typedef factor_hash_t::iterator factor_hash_iterator_t

Private Member Functions

void fill_hash_map (iterator)

Private Attributes

factor_hash_t factor_hash

Additional Inherited Members

- Public Types inherited from cadabra::Algorithm
typedef Ex::iterator iterator
typedef Ex::post_order_iterator post_order_iterator
typedef Ex::sibling_iterator sibling_iterator
typedef Ex::result_t result_t
- Public Types inherited from cadabra::IndexClassifier
typedef std::multimap< Ex, Ex::iterator, tree_exact_less_for_indexmap_objindex_map_t
 A map from a pattern to the position where it occurs in the tree. More...
typedef std::map< Ex::iterator, int, Ex::iterator_base_less > index_position_map_t
 A map from the position of each index to the sequential index. More...
- Static Public Member Functions inherited from cadabra::Algorithm
static unsigned int number_of_indices (const Properties &, iterator it)
static unsigned int number_of_direct_indices (iterator it)
static bool is_termlike (iterator)
 Determines whether the indicated node is 'like a term in a sum'. More...
static bool is_factorlike (iterator)
 Determines whether the indicated node is 'like a factor in a product'. More...
- Public Attributes inherited from cadabra::Algorithm
bool interrupted
unsigned int number_of_calls
unsigned int number_of_modifications
bool suppress_normal_output
bool discard_command_node
Stopwatch index_sw
Stopwatch get_dummy_sw
Stopwatch report_progress_stopwatch
- Protected Types inherited from cadabra::Algorithm
typedef std::pair< sibling_iterator, sibling_iteratorrange_t
 Finding objects in sets. More...
typedef std::vector< range_trange_vector_t
- Protected Member Functions inherited from cadabra::Algorithm
int index_parity (iterator) const
bool contains (sibling_iterator from, sibling_iterator to, sibling_iterator arg)
void find_argument_lists (range_vector_t &, bool only_comma_lists=true) const
template<class Iter >
range_vector_t::iterator find_arg_superset (range_vector_t &, Iter st, Iter nd)
range_vector_t::iterator find_arg_superset (range_vector_t &, sibling_iterator it)
unsigned int locate_single_object (Ex::iterator obj_to_find, Ex::iterator st, Ex::iterator nd, std::vector< unsigned int > &store)
bool locate_object_set (const Ex &objs, Ex::iterator st, Ex::iterator nd, std::vector< unsigned int > &store)
bool is_single_term (iterator)
 Take a single non-product node in a sum and wrap it in a product node, so it can be handled on the same footing as a proper product. More...
bool is_nonprod_factor_in_prod (iterator)
bool prod_wrap_single_term (iterator &)
bool prod_unwrap_single_term (iterator &)
bool sum_wrap_single_term (iterator &)
bool sum_unwrap_single_term (iterator &)
void force_node_wrap (iterator &, std::string)
 Wrap a term in a product or sum in a node with indicated name, irrespective of its parent (it usually makes more sense to call the safer prod_wrap_single_term or sum_wrap_single_term above). More...
bool separated_by_derivative (iterator, iterator, iterator check_dependence) const
 Figure out whether two objects (commonly indices) are separated by a derivative operator, as in. More...
void pushup_multiplier (iterator)
template<class BinaryPredicate >
unsigned int intersection_number (sibling_iterator, sibling_iterator, sibling_iterator, sibling_iterator, BinaryPredicate) const
 Determine the number of elements in the first range which also occur in the second range. More...
void node_zero (iterator)
void node_one (iterator)
void node_integer (iterator, int)
- Static Protected Member Functions inherited from cadabra::Algorithm
static bool less_without_numbers (nset_t::iterator, nset_t::iterator)
static bool equal_without_numbers (nset_t::iterator, nset_t::iterator)
static bool compare_ (const str_node &, const str_node &)
- Protected Attributes inherited from cadabra::Algorithm
bool traverse_ldots
- Protected Attributes inherited from cadabra::IndexClassifier
const Kernelkernel

Member Typedef Documentation

◆ factor_hash_iterator_t

typedef factor_hash_t::iterator cadabra::collect_factors::factor_hash_iterator_t

◆ factor_hash_t

Constructor & Destructor Documentation

◆ collect_factors()

collect_factors::collect_factors ( const Kernel k,
Ex e 

Member Function Documentation

◆ apply()

Algorithm::result_t collect_factors::apply ( iterator st)

Implements cadabra::Algorithm.

◆ can_apply()

bool collect_factors::can_apply ( iterator  it)

Implements cadabra::Algorithm.

◆ fill_hash_map()

void collect_factors::fill_hash_map ( iterator  it)

Member Data Documentation

◆ factor_hash

factor_hash_t cadabra::collect_factors::factor_hash

The documentation for this class was generated from the following files: