/******************************************** 
copyright 1999 McMillan Enterprises, Inc.
www.mcmillan-inc.com
 *********************************************/
#if !defined(PWOMAPPING_H_INCLUDED_)
#define PWOMAPPING_H_INCLUDED_

#include "PWOBase.h"
#include "PWOMSequence.h"

class PWOMapping;

class PWOMappingMmbr: public PWOBase {
    PWOMapping &_parent;
    PyObject *_key;
  public:
    PWOMappingMmbr(PyObject *obj, PWOMapping &parent, PyObject *key): PWOBase
      (obj), _parent(parent), _key(key) {
        Py_XINCREF(_key);
    };
    virtual ~PWOMappingMmbr() {
        Py_XDECREF(_key);
    };
    PWOMappingMmbr &operator = (const PWOBase &other);
};

class PWOMapping: public PWOBase {
  public:
    PWOMapping(): PWOBase(PyDict_New()) {
        LoseRef(_obj);
    }
    PWOMapping(const PWOMapping &other): PWOBase(other){}
    ;
    PWOMapping(PyObject *obj): PWOBase(obj) {
        _violentTypeCheck();
    };
    virtual ~PWOMapping(){}
    ;

    virtual PWOMapping &operator = (const PWOMapping &other) {
        GrabRef(other);
        return  *this;
    };
    PWOMapping &operator = (const PWOBase &other) {
        GrabRef(other);
        _violentTypeCheck();
        return  *this;
    };
    virtual void _violentTypeCheck() {
        if (!PyMapping_Check(_obj)) {
            GrabRef(0);
            Fail(PyExc_TypeError, "Not a mapping");
        }
    };

    //PyMapping_GetItemString
    //PyDict_GetItemString
    PWOMappingMmbr operator[](const char *key) {
        // note: this PyMapping call creates a new reference
        PyObject *rslt = PyMapping_GetItemString(_obj, (char*)key);
        if (rslt == NULL)
          PyErr_Clear();
        Py_XDECREF(rslt);
        PWOString _key(key);
        return PWOMappingMmbr(rslt,  *this, _key);
    };
    //PyDict_GetItem
    PWOMappingMmbr operator[](PyObject *key) {
        PyObject *rslt = PyDict_GetItem(_obj, key);
        //if (rslt == NULL)
        //  Fail(PyExc_KeyError, "Key not found");
        return PWOMappingMmbr(rslt,  *this, key);
    };
    //PyMapping_HasKey
    bool hasKey(PyObject *key)const {
        return PyMapping_HasKey(_obj, key) == 1;
    };
    //PyMapping_HasKeyString
    bool hasKey(const char *key)const {
        return PyMapping_HasKeyString(_obj, (char*)key) == 1;
    };
    //PyMapping_Length
    //PyDict_Size
    int len()const {
        return PyMapping_Length(_obj);
    };
    //PyMapping_SetItemString
    //PyDict_SetItemString
    void setItem(const char *key, PyObject *val) {
        int rslt = PyMapping_SetItemString(_obj, (char*)key, val);
        if (rslt ==  - 1)
          Fail(PyExc_RuntimeError, "Cannot add key / value");
    };
    //PyDict_SetItem
    void setItem(PyObject *key, PyObject *val)const {
        int rslt = PyDict_SetItem(_obj, key, val);
        if (rslt ==  - 1)
          Fail(PyExc_KeyError, "Key must be hashable");
    };
    //PyDict_Clear
    void clear() {
        PyDict_Clear(_obj);
    };
    //PyDict_DelItem
    void delItem(PyObject *key) {
        int rslt = PyMapping_DelItem(_obj, key);
        if (rslt ==  - 1)
          Fail(PyExc_KeyError, "Key not found");
    };
    //PyDict_DelItemString
    void delItem(const char *key) {
        int rslt = PyDict_DelItemString(_obj, (char*)key);
        if (rslt ==  - 1)
          Fail(PyExc_KeyError, "Key not found");
    };
    //PyDict_Items
    PWOList items()const {
        PyObject *rslt = PyMapping_Items(_obj);
        if (rslt == 0)
          Fail(PyExc_RuntimeError, "Failed to get items");
        return LoseRef(rslt);
    };
    //PyDict_Keys
    PWOList keys()const {
        PyObject *rslt = PyMapping_Keys(_obj);
        if (rslt == 0)
          Fail(PyExc_RuntimeError, "Failed to get keys");
        return LoseRef(rslt);
    };
    //PyDict_New - default constructor
    //PyDict_Next
    //PyDict_Values
    PWOList values()const {
        PyObject *rslt = PyMapping_Values(_obj);
        if (rslt == 0)
          Fail(PyExc_RuntimeError, "Failed to get values");
        return LoseRef(rslt);
    };
};

#endif // PWOMAPPING_H_INCLUDED_