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Diffstat (limited to 'share/swig/2.0.11/octave/octiterators.swg')
| -rw-r--r-- | share/swig/2.0.11/octave/octiterators.swg | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/share/swig/2.0.11/octave/octiterators.swg b/share/swig/2.0.11/octave/octiterators.swg new file mode 100644 index 0000000..79a20f8 --- /dev/null +++ b/share/swig/2.0.11/octave/octiterators.swg @@ -0,0 +1,357 @@ +/* ----------------------------------------------------------------------------- + * octiterators.swg + * + * Users can derive form the OctSwigIterator to implemet their + * own iterators. As an example (real one since we use it for STL/STD + * containers), the template OctSwigIterator_T does the + * implementation for generic C++ iterators. + * ----------------------------------------------------------------------------- */ + +%include <std_common.i> + +%fragment("OctSwigIterator","header",fragment="<stddef.h>") { +namespace swig { + struct stop_iteration { + }; + + struct OctSwigIterator { + private: + octave_value _seq; + + protected: + OctSwigIterator(octave_value seq) : _seq(seq) + { + } + + public: + virtual ~OctSwigIterator() {} + + virtual octave_value value() const = 0; + + virtual OctSwigIterator *incr(size_t n = 1) = 0; + + virtual OctSwigIterator *decr(size_t n = 1) + { + throw stop_iteration(); + } + + virtual ptrdiff_t distance(const OctSwigIterator &x) const + { + throw std::invalid_argument("operation not supported"); + } + + virtual bool equal (const OctSwigIterator &x) const + { + throw std::invalid_argument("operation not supported"); + } + + virtual OctSwigIterator *copy() const = 0; + + octave_value next() + { + octave_value obj = value(); + incr(); + return obj; + } + + octave_value previous() + { + decr(); + return value(); + } + + OctSwigIterator *advance(ptrdiff_t n) + { + return (n > 0) ? incr(n) : decr(-n); + } + + bool operator == (const OctSwigIterator& x) const + { + return equal(x); + } + + bool operator != (const OctSwigIterator& x) const + { + return ! operator==(x); + } + + OctSwigIterator* operator ++ () { + incr(); + return this; + } + + OctSwigIterator* operator -- () { + decr(); + return this; + } + + OctSwigIterator* operator + (ptrdiff_t n) const + { + return copy()->advance(n); + } + + OctSwigIterator* operator - (ptrdiff_t n) const + { + return copy()->advance(-n); + } + + ptrdiff_t operator - (const OctSwigIterator& x) const + { + return x.distance(*this); + } + + static swig_type_info* descriptor() { + static int init = 0; + static swig_type_info* desc = 0; + if (!init) { + desc = SWIG_TypeQuery("swig::OctSwigIterator *"); + init = 1; + } + return desc; + } + }; +} +} + +%fragment("OctSwigIterator_T","header",fragment="<stddef.h>",fragment="OctSwigIterator",fragment="StdTraits",fragment="StdIteratorTraits") { +namespace swig { + template<typename OutIterator> + class OctSwigIterator_T : public OctSwigIterator + { + public: + typedef OutIterator out_iterator; + typedef typename std::iterator_traits<out_iterator>::value_type value_type; + typedef OctSwigIterator_T<out_iterator> self_type; + + OctSwigIterator_T(out_iterator curr, octave_value seq) + : OctSwigIterator(seq), current(curr) + { + } + + const out_iterator& get_current() const + { + return current; + } + + + bool equal (const OctSwigIterator &iter) const + { + const self_type *iters = dynamic_cast<const self_type *>(&iter); + if (iters) { + return (current == iters->get_current()); + } else { + throw std::invalid_argument("bad iterator type"); + } + } + + ptrdiff_t distance(const OctSwigIterator &iter) const + { + const self_type *iters = dynamic_cast<const self_type *>(&iter); + if (iters) { + return std::distance(current, iters->get_current()); + } else { + throw std::invalid_argument("bad iterator type"); + } + } + + protected: + out_iterator current; + }; + + template <class ValueType> + struct from_oper + { + typedef const ValueType& argument_type; + typedef octave_value result_type; + result_type operator()(argument_type v) const + { + return swig::from(v); + } + }; + + template<typename OutIterator, + typename ValueType = typename std::iterator_traits<OutIterator>::value_type, + typename FromOper = from_oper<ValueType> > + class OctSwigIteratorOpen_T : public OctSwigIterator_T<OutIterator> + { + public: + FromOper from; + typedef OutIterator out_iterator; + typedef ValueType value_type; + typedef OctSwigIterator_T<out_iterator> base; + typedef OctSwigIteratorOpen_T<OutIterator, ValueType, FromOper> self_type; + + OctSwigIteratorOpen_T(out_iterator curr, octave_value seq) + : OctSwigIterator_T<OutIterator>(curr, seq) + { + } + + octave_value value() const { + return from(static_cast<const value_type&>(*(base::current))); + } + + OctSwigIterator *copy() const + { + return new self_type(*this); + } + + OctSwigIterator *incr(size_t n = 1) + { + while (n--) { + ++base::current; + } + return this; + } + + OctSwigIterator *decr(size_t n = 1) + { + while (n--) { + --base::current; + } + return this; + } + }; + + template<typename OutIterator, + typename ValueType = typename std::iterator_traits<OutIterator>::value_type, + typename FromOper = from_oper<ValueType> > + class OctSwigIteratorClosed_T : public OctSwigIterator_T<OutIterator> + { + public: + FromOper from; + typedef OutIterator out_iterator; + typedef ValueType value_type; + typedef OctSwigIterator_T<out_iterator> base; + typedef OctSwigIteratorClosed_T<OutIterator, ValueType, FromOper> self_type; + + OctSwigIteratorClosed_T(out_iterator curr, out_iterator first, out_iterator last, octave_value seq) + : OctSwigIterator_T<OutIterator>(curr, seq), begin(first), end(last) + { + } + + octave_value value() const { + if (base::current == end) { + throw stop_iteration(); + } else { + return from(static_cast<const value_type&>(*(base::current))); + } + } + + OctSwigIterator *copy() const + { + return new self_type(*this); + } + + OctSwigIterator *incr(size_t n = 1) + { + while (n--) { + if (base::current == end) { + throw stop_iteration(); + } else { + ++base::current; + } + } + return this; + } + + OctSwigIterator *decr(size_t n = 1) + { + while (n--) { + if (base::current == begin) { + throw stop_iteration(); + } else { + --base::current; + } + } + return this; + } + + private: + out_iterator begin; + out_iterator end; + }; + + template<typename OutIter> + inline OctSwigIterator* + make_output_iterator(const OutIter& current, const OutIter& begin,const OutIter& end, octave_value seq = octave_value()) + { + return new OctSwigIteratorClosed_T<OutIter>(current, begin, end, seq); + } + + template<typename OutIter> + inline OctSwigIterator* + make_output_iterator(const OutIter& current, octave_value seq = octave_value()) + { + return new OctSwigIteratorOpen_T<OutIter>(current, seq); + } +} +} + + +%fragment("OctSwigIterator"); +namespace swig +{ +// Throw a StopIteration exception + %ignore stop_iteration; + struct stop_iteration {}; + + %typemap(throws) stop_iteration { + error("stop_iteration exception"); + SWIG_fail; + } + +// Mark methods that return new objects + %newobject OctSwigIterator::copy; + %newobject OctSwigIterator::operator + (ptrdiff_t n) const; + %newobject OctSwigIterator::operator - (ptrdiff_t n) const; + + %nodirector OctSwigIterator; + + %catches(swig::stop_iteration) OctSwigIterator::value() const; + %catches(swig::stop_iteration) OctSwigIterator::incr(size_t n = 1); + %catches(swig::stop_iteration) OctSwigIterator::decr(size_t n = 1); + %catches(std::invalid_argument) OctSwigIterator::distance(const OctSwigIterator &x) const; + %catches(std::invalid_argument) OctSwigIterator::equal (const OctSwigIterator &x) const; + %catches(swig::stop_iteration) OctSwigIterator::next(); + %catches(swig::stop_iteration) OctSwigIterator::previous(); + %catches(swig::stop_iteration) OctSwigIterator::advance(ptrdiff_t n); + %catches(swig::stop_iteration) OctSwigIterator::operator += (ptrdiff_t n); + %catches(swig::stop_iteration) OctSwigIterator::operator -= (ptrdiff_t n); + %catches(swig::stop_iteration) OctSwigIterator::operator + (ptrdiff_t n) const; + %catches(swig::stop_iteration) OctSwigIterator::operator - (ptrdiff_t n) const; + + + struct OctSwigIterator + { + protected: + OctSwigIterator(octave_value seq); + + public: + virtual ~OctSwigIterator(); + + virtual octave_value value() const = 0; + + virtual OctSwigIterator *incr(size_t n = 1) = 0; + + virtual OctSwigIterator *decr(size_t n = 1); + + virtual ptrdiff_t distance(const OctSwigIterator &x) const; + + virtual bool equal (const OctSwigIterator &x) const; + + virtual OctSwigIterator *copy() const = 0; + + octave_value next(); + octave_value previous(); + OctSwigIterator *advance(ptrdiff_t n); + + bool operator == (const OctSwigIterator& x) const; + bool operator != (const OctSwigIterator& x) const; + OctSwigIterator* operator ++ (); + OctSwigIterator* operator -- (); + OctSwigIterator* operator + (ptrdiff_t n) const; + OctSwigIterator* operator - (ptrdiff_t n) const; + ptrdiff_t operator - (const OctSwigIterator& x) const; + }; +} + |