Cadabra
Computer algebra system for field theory problems
Loading...
Searching...
No Matches
IndexIterator.hh
Go to the documentation of this file.
1
2#pragma once
3
4#include "Storage.hh"
5#include "Props.hh"
6
7namespace cadabra {
8
15
16 class index_iterator : public Ex::iterator_base {
17 public:
20
21 static index_iterator create(const Properties&, const iterator_base&);
22
23 static index_iterator begin(const Properties&, const iterator_base&, int offset=0);
24 static index_iterator end(const Properties&, const iterator_base&);
25
27 bool operator==(const index_iterator&) const;
28 bool operator!=(const index_iterator&) const;
31 index_iterator& operator+=(unsigned int);
32
33 Ex::iterator halt, walk, roof;
34 private:
36
37 bool is_index(Ex::iterator) const;
38 };
39
41 {
42 struct iterator {
48 using const_pointer = const value_type*;
49 using iterator_category = std::input_iterator_tag;
50
52
53 bool operator == (const iterator& other) { return it == other.it; }
54 bool operator != (const iterator& other) { return !(*this == other); }
55 reference operator* () { return it; }
56 pointer operator-> () { return ⁢ }
57 reference operator ++ () { return ++it; }
58 value_type operator ++ (int) { return it++; }
59
60
62 };
63
64 iter_indices(const Properties& properties, Ex::iterator it)
65 : it(it)
67
69 iterator begin(int offset) { return index_iterator::begin(properties, it, offset); }
71 size_t size() { return std::distance(begin(), end()); }
72
73 private:
74 Ex::iterator it;
76 };
77 //size_t number_of_indices(const Properties&, Ex::iterator);
78 }
Class holding a collection of properties attached to expressions.
Definition Props.hh:237
An iterator which iterates over indices even if they are at lower levels, i.e.
Definition IndexIterator.hh:16
bool is_index(Ex::iterator) const
bool operator!=(const index_iterator &) const
Definition IndexIterator.cc:31
index_iterator operator++(int)
bool operator==(const index_iterator &) const
Definition IndexIterator.cc:37
index_iterator & operator+=(unsigned int)
Definition IndexIterator.cc:74
Ex::iterator walk
Definition IndexIterator.hh:33
static index_iterator end(const Properties &, const iterator_base &)
Definition IndexIterator.cc:130
static index_iterator create(const Properties &, const iterator_base &)
Definition IndexIterator.cc:12
static index_iterator begin(const Properties &, const iterator_base &, int offset=0)
Definition IndexIterator.cc:122
Ex::iterator halt
Definition IndexIterator.hh:33
const Properties * properties
Definition IndexIterator.hh:35
Ex::iterator roof
Definition IndexIterator.hh:33
index_iterator & operator++()
Definition IndexIterator.cc:84
index_iterator & operator=(const index_iterator &)
Definition IndexIterator.cc:138
Functions to handle the exchange properties of two or more symbols in a product.
Definition Adjform.cc:83
void set(rset_t::iterator &num, multiplier_t fac)
Definition Storage.cc:1063
Definition IndexIterator.hh:42
reference operator*()
Definition IndexIterator.hh:55
pointer operator->()
Definition IndexIterator.hh:56
ptrdiff_t difference_type
Definition IndexIterator.hh:44
std::input_iterator_tag iterator_category
Definition IndexIterator.hh:49
iterator(index_iterator it)
Definition IndexIterator.hh:51
bool operator==(const iterator &other)
Definition IndexIterator.hh:53
reference operator++()
Definition IndexIterator.hh:57
index_iterator it
Definition IndexIterator.hh:61
bool operator!=(const iterator &other)
Definition IndexIterator.hh:54
Definition IndexIterator.hh:41
iterator end()
Definition IndexIterator.hh:70
Ex::iterator it
Definition IndexIterator.hh:74
iterator begin()
Definition IndexIterator.hh:68
iter_indices(const Properties &properties, Ex::iterator it)
Definition IndexIterator.hh:64
size_t size()
Definition IndexIterator.hh:71
iterator begin(int offset)
Definition IndexIterator.hh:69
const Properties & properties
Definition IndexIterator.hh:75