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'Version_1_19_0'. [SVN r8447]
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334
objects.h
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334
objects.h
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// (C) Copyright David Abrahams 2000. Permission to copy, use, modify, sell and
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// distribute this software is granted provided this copyright notice appears
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// in all copies. This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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// The author gratefully acknowleges the support of Dragon Systems, Inc., in
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// producing this work.
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#ifndef OBJECTS_DWA051100_H_
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# define OBJECTS_DWA051100_H_
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# include "wrap_python.h"
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# include "pyconfig.h"
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# include "pyptr.h"
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# include "boost/operators.hpp"
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# include <utility>
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namespace python {
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class object
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{
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public:
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explicit object(ref p);
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// Return a reference to the held object
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ref reference() const;
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// Return a raw pointer to the held object
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PyObject* get() const;
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private:
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ref m_p;
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};
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class tuple : public object
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{
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public:
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explicit tuple(std::size_t n = 0);
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explicit tuple(ref p);
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template <class First, class Second>
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tuple(const std::pair<First,Second>& x)
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: object(ref(PyTuple_New(2)))
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{
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set_item(0, x.first);
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set_item(1, x.second);
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}
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template <class First, class Second>
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tuple(const First& first, const Second& second)
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: object(ref(PyTuple_New(2)))
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{
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set_item(0, first);
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set_item(1, second);
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}
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template <class First, class Second, class Third>
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tuple(const First& first, const Second& second, const Third& third)
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: object(ref(PyTuple_New(3)))
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{
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set_item(0, first);
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set_item(1, second);
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set_item(2, third);
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}
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template <class First, class Second, class Third, class Fourth>
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tuple(const First& first, const Second& second, const Third& third, const Fourth& fourth)
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: object(ref(PyTuple_New(4)))
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{
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set_item(0, first);
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set_item(1, second);
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set_item(2, third);
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set_item(3, fourth);
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}
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static PyTypeObject* type_obj();
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static bool accepts(ref p);
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std::size_t size() const;
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ref operator[](std::size_t pos) const;
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template <class T>
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void set_item(std::size_t pos, const T& rhs)
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{
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this->set_item(pos, make_ref(rhs));
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}
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void set_item(std::size_t pos, const ref& rhs);
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tuple slice(int low, int high) const;
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friend tuple operator+(const tuple&, const tuple&);
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tuple& operator+=(const tuple& rhs);
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};
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class list : public object
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{
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struct proxy;
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struct slice_proxy;
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public:
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explicit list(ref p);
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explicit list(std::size_t sz = 0);
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static PyTypeObject* type_obj();
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static bool accepts(ref p);
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std::size_t size();
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ref operator[](std::size_t pos) const;
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proxy operator[](std::size_t pos);
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ref get_item(std::size_t pos) const;
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template <class T>
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void set_item(std::size_t pos, const T& x)
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{ this->set_item(pos, make_ref(x)); }
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void set_item(std::size_t pos, const ref& );
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// void set_item(std::size_t pos, const object& );
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template <class T>
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void insert(std::size_t index, const T& x)
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{ this->insert(index, make_ref(x)); }
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void insert(std::size_t index, const ref& item);
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template <class T>
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void push_back(const T& item)
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{ this->push_back(make_ref(item)); }
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void push_back(const ref& item);
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template <class T>
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void append(const T& item)
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{ this->append(make_ref(item)); }
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void append(const ref& item);
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list slice(int low, int high) const;
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slice_proxy slice(int low, int high);
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void sort();
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void reverse();
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tuple as_tuple() const;
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};
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class string
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: public object, public boost::multipliable2<string, unsigned int>
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{
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public:
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// Construct from an owned PyObject*.
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// Precondition: p must point to a python string.
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explicit string(ref p);
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explicit string(const char* s);
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string(const char* s, std::size_t length);
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string(const string& rhs);
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enum interned_t { interned };
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string(const char* s, interned_t);
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// Get the type object for Strings
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static PyTypeObject* type_obj();
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// Return true if the given object is a python string
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static bool accepts(ref o);
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// Return the length of the string.
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std::size_t size() const;
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// Returns a null-terminated representation of the contents of string.
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// The pointer refers to the internal buffer of string, not a copy.
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// The data must not be modified in any way. It must not be de-allocated.
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const char* c_str() const;
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string& operator*=(unsigned int repeat_count);
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string& operator+=(const string& rhs);
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friend string operator+(string x, string y);
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string& operator+=(const char* rhs);
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friend string operator+(string x, const char* y);
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friend string operator+(const char* x, string y);
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void intern();
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friend string operator%(const string& format, const tuple& args);
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};
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class dictionary : public object
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{
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private:
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struct proxy;
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public:
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explicit dictionary(ref p);
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dictionary();
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void clear();
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static PyTypeObject* type_obj();
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static bool accepts(ref p);
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public:
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template <class Key>
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proxy operator[](const Key& key)
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{ return this->operator[](make_ref(key)); }
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proxy operator[](ref key);
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template <class Key>
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ref operator[](const Key& key) const
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{ return this->operator[](make_ref(key)); }
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ref operator[](ref key) const;
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template <class Key>
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ref get_item(const Key& key) const
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{ return this->get_item(make_ref(key)); }
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ref get_item(const ref& key) const;
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template <class Key, class Default>
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ref get_item(const Key& key, const Default& default_) const
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{ return this->get_item(make_ref(key), make_ref(default_)); }
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ref get_item(const ref& key, const ref& default_) const;
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template <class Key, class Value>
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void set_item(const Key& key, const Value& value)
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{ this->set_item(make_ref(key), make_ref(value)); }
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void set_item(const ref& key, const ref& value);
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template <class Key>
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void erase(const Key& key)
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{ this->erase(make_ref(key)); }
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void erase(ref key);
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// proxy operator[](const object& key);
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// ref operator[](const object& key) const;
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// ref get_item(const object& key, ref default_ = ref()) const;
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// void set_item(const object& key, const ref& value);
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// void erase(const object& key);
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list items() const;
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list keys() const;
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list values() const;
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std::size_t size() const;
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// TODO: iterator support
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};
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struct dictionary::proxy
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{
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template <class T>
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const ref& operator=(const T& rhs)
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{ return (*this) = make_ref(rhs); }
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const ref& operator=(const ref& rhs);
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operator ref() const;
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private:
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friend class dictionary;
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proxy(const ref& dict, const ref& key);
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// This is needed to work around the very strange MSVC error report that the
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// return type of the built-in operator= differs from that of the ones
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// defined above. Couldn't hurt to make these un-assignable anyway, though.
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const ref& operator=(const proxy&); // Not actually implemented
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private:
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ref m_dict;
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ref m_key;
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};
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struct list::proxy
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{
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template <class T>
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const ref& operator=(const T& rhs)
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{ return (*this) = make_ref(rhs); }
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const ref& operator=(const ref& rhs);
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operator ref() const;
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private:
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friend class list;
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proxy(const ref& list, std::size_t index);
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// This is needed to work around the very strange MSVC error report that the
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// return type of the built-in operator= differs from that of the ones
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// defined above. Couldn't hurt to make these un-assignable anyway, though.
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const ref& operator=(const proxy&); // Not actually implemented
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private:
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list m_list;
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std::size_t m_index;
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};
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struct list::slice_proxy
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{
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const list& operator=(const list& rhs);
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operator ref() const;
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operator list() const;
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std::size_t size();
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ref operator[](std::size_t pos) const;
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private:
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friend class list;
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slice_proxy(const ref& list, int low, int high);
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private:
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ref m_list;
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int m_low, m_high;
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};
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} // namespace python
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BOOST_PYTHON_BEGIN_CONVERSION_NAMESPACE
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PyObject* to_python(const python::tuple&);
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python::tuple from_python(PyObject* p, python::type<python::tuple>);
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inline python::tuple from_python(PyObject* p, python::type<const python::tuple&>)
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{
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return from_python(p, python::type<python::tuple>());
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}
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PyObject* to_python(const python::list&);
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python::list from_python(PyObject* p, python::type<python::list>);
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inline python::list from_python(PyObject* p, python::type<const python::list&>)
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{
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return from_python(p, python::type<python::list>());
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}
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PyObject* to_python(const python::string&);
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python::string from_python(PyObject* p, python::type<python::string>);
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inline python::string from_python(PyObject* p, python::type<const python::string&>)
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{
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return from_python(p, python::type<python::string>());
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}
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PyObject* to_python(const python::dictionary&);
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python::dictionary from_python(PyObject* p, python::type<python::dictionary>);
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inline python::dictionary from_python(PyObject* p, python::type<const python::dictionary&>)
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{
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return from_python(p, python::type<python::dictionary>());
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}
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BOOST_PYTHON_END_CONVERSION_NAMESPACE
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#endif // OBJECTS_DWA051100_H_
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