Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/mingw32/Python27/include/abstract.h @ 87:2a2c65a20a8b
Add Python libs and headers
| author | Chris Cannam |
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| date | Wed, 25 Feb 2015 14:05:22 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/mingw32/Python27/include/abstract.h Wed Feb 25 14:05:22 2015 +0000 @@ -0,0 +1,1396 @@ +#ifndef Py_ABSTRACTOBJECT_H +#define Py_ABSTRACTOBJECT_H +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef PY_SSIZE_T_CLEAN +#define PyObject_CallFunction _PyObject_CallFunction_SizeT +#define PyObject_CallMethod _PyObject_CallMethod_SizeT +#endif + +/* Abstract Object Interface (many thanks to Jim Fulton) */ + +/* + PROPOSAL: A Generic Python Object Interface for Python C Modules + +Problem + + Python modules written in C that must access Python objects must do + so through routines whose interfaces are described by a set of + include files. Unfortunately, these routines vary according to the + object accessed. To use these routines, the C programmer must check + the type of the object being used and must call a routine based on + the object type. For example, to access an element of a sequence, + the programmer must determine whether the sequence is a list or a + tuple: + + if(is_tupleobject(o)) + e=gettupleitem(o,i) + else if(is_listitem(o)) + e=getlistitem(o,i) + + If the programmer wants to get an item from another type of object + that provides sequence behavior, there is no clear way to do it + correctly. + + The persistent programmer may peruse object.h and find that the + _typeobject structure provides a means of invoking up to (currently + about) 41 special operators. So, for example, a routine can get an + item from any object that provides sequence behavior. However, to + use this mechanism, the programmer must make their code dependent on + the current Python implementation. + + Also, certain semantics, especially memory management semantics, may + differ by the type of object being used. Unfortunately, these + semantics are not clearly described in the current include files. + An abstract interface providing more consistent semantics is needed. + +Proposal + + I propose the creation of a standard interface (with an associated + library of routines and/or macros) for generically obtaining the + services of Python objects. This proposal can be viewed as one + components of a Python C interface consisting of several components. + + From the viewpoint of C access to Python services, we have (as + suggested by Guido in off-line discussions): + + - "Very high level layer": two or three functions that let you exec or + eval arbitrary Python code given as a string in a module whose name is + given, passing C values in and getting C values out using + mkvalue/getargs style format strings. This does not require the user + to declare any variables of type "PyObject *". This should be enough + to write a simple application that gets Python code from the user, + execs it, and returns the output or errors. (Error handling must also + be part of this API.) + + - "Abstract objects layer": which is the subject of this proposal. + It has many functions operating on objects, and lest you do many + things from C that you can also write in Python, without going + through the Python parser. + + - "Concrete objects layer": This is the public type-dependent + interface provided by the standard built-in types, such as floats, + strings, and lists. This interface exists and is currently + documented by the collection of include files provided with the + Python distributions. + + From the point of view of Python accessing services provided by C + modules: + + - "Python module interface": this interface consist of the basic + routines used to define modules and their members. Most of the + current extensions-writing guide deals with this interface. + + - "Built-in object interface": this is the interface that a new + built-in type must provide and the mechanisms and rules that a + developer of a new built-in type must use and follow. + + This proposal is a "first-cut" that is intended to spur + discussion. See especially the lists of notes. + + The Python C object interface will provide four protocols: object, + numeric, sequence, and mapping. Each protocol consists of a + collection of related operations. If an operation that is not + provided by a particular type is invoked, then a standard exception, + NotImplementedError is raised with a operation name as an argument. + In addition, for convenience this interface defines a set of + constructors for building objects of built-in types. This is needed + so new objects can be returned from C functions that otherwise treat + objects generically. + +Memory Management + + For all of the functions described in this proposal, if a function + retains a reference to a Python object passed as an argument, then the + function will increase the reference count of the object. It is + unnecessary for the caller to increase the reference count of an + argument in anticipation of the object's retention. + + All Python objects returned from functions should be treated as new + objects. Functions that return objects assume that the caller will + retain a reference and the reference count of the object has already + been incremented to account for this fact. A caller that does not + retain a reference to an object that is returned from a function + must decrement the reference count of the object (using + DECREF(object)) to prevent memory leaks. + + Note that the behavior mentioned here is different from the current + behavior for some objects (e.g. lists and tuples) when certain + type-specific routines are called directly (e.g. setlistitem). The + proposed abstraction layer will provide a consistent memory + management interface, correcting for inconsistent behavior for some + built-in types. + +Protocols + +xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx*/ + +/* Object Protocol: */ + + /* Implemented elsewhere: + + int PyObject_Print(PyObject *o, FILE *fp, int flags); + + Print an object, o, on file, fp. Returns -1 on + error. The flags argument is used to enable certain printing + options. The only option currently supported is Py_Print_RAW. + + (What should be said about Py_Print_RAW?) + + */ + + /* Implemented elsewhere: + + int PyObject_HasAttrString(PyObject *o, char *attr_name); + + Returns 1 if o has the attribute attr_name, and 0 otherwise. + This is equivalent to the Python expression: + hasattr(o,attr_name). + + This function always succeeds. + + */ + + /* Implemented elsewhere: + + PyObject* PyObject_GetAttrString(PyObject *o, char *attr_name); + + Retrieve an attributed named attr_name form object o. + Returns the attribute value on success, or NULL on failure. + This is the equivalent of the Python expression: o.attr_name. + + */ + + /* Implemented elsewhere: + + int PyObject_HasAttr(PyObject *o, PyObject *attr_name); + + Returns 1 if o has the attribute attr_name, and 0 otherwise. + This is equivalent to the Python expression: + hasattr(o,attr_name). + + This function always succeeds. + + */ + + /* Implemented elsewhere: + + PyObject* PyObject_GetAttr(PyObject *o, PyObject *attr_name); + + Retrieve an attributed named attr_name form object o. + Returns the attribute value on success, or NULL on failure. + This is the equivalent of the Python expression: o.attr_name. + + */ + + + /* Implemented elsewhere: + + int PyObject_SetAttrString(PyObject *o, char *attr_name, PyObject *v); + + Set the value of the attribute named attr_name, for object o, + to the value, v. Returns -1 on failure. This is + the equivalent of the Python statement: o.attr_name=v. + + */ + + /* Implemented elsewhere: + + int PyObject_SetAttr(PyObject *o, PyObject *attr_name, PyObject *v); + + Set the value of the attribute named attr_name, for object o, + to the value, v. Returns -1 on failure. This is + the equivalent of the Python statement: o.attr_name=v. + + */ + + /* implemented as a macro: + + int PyObject_DelAttrString(PyObject *o, char *attr_name); + + Delete attribute named attr_name, for object o. Returns + -1 on failure. This is the equivalent of the Python + statement: del o.attr_name. + + */ +#define PyObject_DelAttrString(O,A) PyObject_SetAttrString((O),(A),NULL) + + /* implemented as a macro: + + int PyObject_DelAttr(PyObject *o, PyObject *attr_name); + + Delete attribute named attr_name, for object o. Returns -1 + on failure. This is the equivalent of the Python + statement: del o.attr_name. + + */ +#define PyObject_DelAttr(O,A) PyObject_SetAttr((O),(A),NULL) + + PyAPI_FUNC(int) PyObject_Cmp(PyObject *o1, PyObject *o2, int *result); + + /* + Compare the values of o1 and o2 using a routine provided by + o1, if one exists, otherwise with a routine provided by o2. + The result of the comparison is returned in result. Returns + -1 on failure. This is the equivalent of the Python + statement: result=cmp(o1,o2). + + */ + + /* Implemented elsewhere: + + int PyObject_Compare(PyObject *o1, PyObject *o2); + + Compare the values of o1 and o2 using a routine provided by + o1, if one exists, otherwise with a routine provided by o2. + Returns the result of the comparison on success. On error, + the value returned is undefined. This is equivalent to the + Python expression: cmp(o1,o2). + + */ + + /* Implemented elsewhere: + + PyObject *PyObject_Repr(PyObject *o); + + Compute the string representation of object, o. Returns the + string representation on success, NULL on failure. This is + the equivalent of the Python expression: repr(o). + + Called by the repr() built-in function and by reverse quotes. + + */ + + /* Implemented elsewhere: + + PyObject *PyObject_Str(PyObject *o); + + Compute the string representation of object, o. Returns the + string representation on success, NULL on failure. This is + the equivalent of the Python expression: str(o).) + + Called by the str() built-in function and by the print + statement. + + */ + + /* Implemented elsewhere: + + PyObject *PyObject_Unicode(PyObject *o); + + Compute the unicode representation of object, o. Returns the + unicode representation on success, NULL on failure. This is + the equivalent of the Python expression: unistr(o).) + + Called by the unistr() built-in function. + + */ + + /* Declared elsewhere + + PyAPI_FUNC(int) PyCallable_Check(PyObject *o); + + Determine if the object, o, is callable. Return 1 if the + object is callable and 0 otherwise. + + This function always succeeds. + + */ + + + + PyAPI_FUNC(PyObject *) PyObject_Call(PyObject *callable_object, + PyObject *args, PyObject *kw); + + /* + Call a callable Python object, callable_object, with + arguments and keywords arguments. The 'args' argument can not be + NULL, but the 'kw' argument can be NULL. + + */ + + PyAPI_FUNC(PyObject *) PyObject_CallObject(PyObject *callable_object, + PyObject *args); + + /* + Call a callable Python object, callable_object, with + arguments given by the tuple, args. If no arguments are + needed, then args may be NULL. Returns the result of the + call on success, or NULL on failure. This is the equivalent + of the Python expression: apply(o,args). + + */ + + PyAPI_FUNC(PyObject *) PyObject_CallFunction(PyObject *callable_object, + char *format, ...); + + /* + Call a callable Python object, callable_object, with a + variable number of C arguments. The C arguments are described + using a mkvalue-style format string. The format may be NULL, + indicating that no arguments are provided. Returns the + result of the call on success, or NULL on failure. This is + the equivalent of the Python expression: apply(o,args). + + */ + + + PyAPI_FUNC(PyObject *) PyObject_CallMethod(PyObject *o, char *m, + char *format, ...); + + /* + Call the method named m of object o with a variable number of + C arguments. The C arguments are described by a mkvalue + format string. The format may be NULL, indicating that no + arguments are provided. Returns the result of the call on + success, or NULL on failure. This is the equivalent of the + Python expression: o.method(args). + */ + + PyAPI_FUNC(PyObject *) _PyObject_CallFunction_SizeT(PyObject *callable, + char *format, ...); + PyAPI_FUNC(PyObject *) _PyObject_CallMethod_SizeT(PyObject *o, + char *name, + char *format, ...); + + PyAPI_FUNC(PyObject *) PyObject_CallFunctionObjArgs(PyObject *callable, + ...); + + /* + Call a callable Python object, callable_object, with a + variable number of C arguments. The C arguments are provided + as PyObject * values, terminated by a NULL. Returns the + result of the call on success, or NULL on failure. This is + the equivalent of the Python expression: apply(o,args). + */ + + + PyAPI_FUNC(PyObject *) PyObject_CallMethodObjArgs(PyObject *o, + PyObject *m, ...); + + /* + Call the method named m of object o with a variable number of + C arguments. The C arguments are provided as PyObject * + values, terminated by NULL. Returns the result of the call + on success, or NULL on failure. This is the equivalent of + the Python expression: o.method(args). + */ + + + /* Implemented elsewhere: + + long PyObject_Hash(PyObject *o); + + Compute and return the hash, hash_value, of an object, o. On + failure, return -1. This is the equivalent of the Python + expression: hash(o). + + */ + + + /* Implemented elsewhere: + + int PyObject_IsTrue(PyObject *o); + + Returns 1 if the object, o, is considered to be true, 0 if o is + considered to be false and -1 on failure. This is equivalent to the + Python expression: not not o + + */ + + /* Implemented elsewhere: + + int PyObject_Not(PyObject *o); + + Returns 0 if the object, o, is considered to be true, 1 if o is + considered to be false and -1 on failure. This is equivalent to the + Python expression: not o + + */ + + PyAPI_FUNC(PyObject *) PyObject_Type(PyObject *o); + + /* + On success, returns a type object corresponding to the object + type of object o. On failure, returns NULL. This is + equivalent to the Python expression: type(o). + */ + + PyAPI_FUNC(Py_ssize_t) PyObject_Size(PyObject *o); + + /* + Return the size of object o. If the object, o, provides + both sequence and mapping protocols, the sequence size is + returned. On error, -1 is returned. This is the equivalent + to the Python expression: len(o). + + */ + + /* For DLL compatibility */ +#undef PyObject_Length + PyAPI_FUNC(Py_ssize_t) PyObject_Length(PyObject *o); +#define PyObject_Length PyObject_Size + + PyAPI_FUNC(Py_ssize_t) _PyObject_LengthHint(PyObject *o, Py_ssize_t); + + /* + Guess the size of object o using len(o) or o.__length_hint__(). + If neither of those return a non-negative value, then return the + default value. If one of the calls fails, this function returns -1. + */ + + PyAPI_FUNC(PyObject *) PyObject_GetItem(PyObject *o, PyObject *key); + + /* + Return element of o corresponding to the object, key, or NULL + on failure. This is the equivalent of the Python expression: + o[key]. + + */ + + PyAPI_FUNC(int) PyObject_SetItem(PyObject *o, PyObject *key, PyObject *v); + + /* + Map the object, key, to the value, v. Returns + -1 on failure. This is the equivalent of the Python + statement: o[key]=v. + */ + + PyAPI_FUNC(int) PyObject_DelItemString(PyObject *o, char *key); + + /* + Remove the mapping for object, key, from the object *o. + Returns -1 on failure. This is equivalent to + the Python statement: del o[key]. + */ + + PyAPI_FUNC(int) PyObject_DelItem(PyObject *o, PyObject *key); + + /* + Delete the mapping for key from *o. Returns -1 on failure. + This is the equivalent of the Python statement: del o[key]. + */ + + PyAPI_FUNC(int) PyObject_AsCharBuffer(PyObject *obj, + const char **buffer, + Py_ssize_t *buffer_len); + + /* + Takes an arbitrary object which must support the (character, + single segment) buffer interface and returns a pointer to a + read-only memory location useable as character based input + for subsequent processing. + + 0 is returned on success. buffer and buffer_len are only + set in case no error occurs. Otherwise, -1 is returned and + an exception set. + + */ + + PyAPI_FUNC(int) PyObject_CheckReadBuffer(PyObject *obj); + + /* + Checks whether an arbitrary object supports the (character, + single segment) buffer interface. Returns 1 on success, 0 + on failure. + + */ + + PyAPI_FUNC(int) PyObject_AsReadBuffer(PyObject *obj, + const void **buffer, + Py_ssize_t *buffer_len); + + /* + Same as PyObject_AsCharBuffer() except that this API expects + (readable, single segment) buffer interface and returns a + pointer to a read-only memory location which can contain + arbitrary data. + + 0 is returned on success. buffer and buffer_len are only + set in case no error occurs. Otherwise, -1 is returned and + an exception set. + + */ + + PyAPI_FUNC(int) PyObject_AsWriteBuffer(PyObject *obj, + void **buffer, + Py_ssize_t *buffer_len); + + /* + Takes an arbitrary object which must support the (writeable, + single segment) buffer interface and returns a pointer to a + writeable memory location in buffer of size buffer_len. + + 0 is returned on success. buffer and buffer_len are only + set in case no error occurs. Otherwise, -1 is returned and + an exception set. + + */ + + /* new buffer API */ + +#define PyObject_CheckBuffer(obj) \ + (((obj)->ob_type->tp_as_buffer != NULL) && \ + (PyType_HasFeature((obj)->ob_type, Py_TPFLAGS_HAVE_NEWBUFFER)) && \ + ((obj)->ob_type->tp_as_buffer->bf_getbuffer != NULL)) + + /* Return 1 if the getbuffer function is available, otherwise + return 0 */ + + PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view, + int flags); + + /* This is a C-API version of the getbuffer function call. It checks + to make sure object has the required function pointer and issues the + call. Returns -1 and raises an error on failure and returns 0 on + success + */ + + + PyAPI_FUNC(void *) PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices); + + /* Get the memory area pointed to by the indices for the buffer given. + Note that view->ndim is the assumed size of indices + */ + + PyAPI_FUNC(int) PyBuffer_SizeFromFormat(const char *); + + /* Return the implied itemsize of the data-format area from a + struct-style description */ + + + + PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, Py_buffer *view, + Py_ssize_t len, char fort); + + PyAPI_FUNC(int) PyBuffer_FromContiguous(Py_buffer *view, void *buf, + Py_ssize_t len, char fort); + + + /* Copy len bytes of data from the contiguous chunk of memory + pointed to by buf into the buffer exported by obj. Return + 0 on success and return -1 and raise a PyBuffer_Error on + error (i.e. the object does not have a buffer interface or + it is not working). + + If fort is 'F' and the object is multi-dimensional, + then the data will be copied into the array in + Fortran-style (first dimension varies the fastest). If + fort is 'C', then the data will be copied into the array + in C-style (last dimension varies the fastest). If fort + is 'A', then it does not matter and the copy will be made + in whatever way is more efficient. + + */ + + PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src); + + /* Copy the data from the src buffer to the buffer of destination + */ + + PyAPI_FUNC(int) PyBuffer_IsContiguous(Py_buffer *view, char fort); + + + PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims, + Py_ssize_t *shape, + Py_ssize_t *strides, + int itemsize, + char fort); + + /* Fill the strides array with byte-strides of a contiguous + (Fortran-style if fort is 'F' or C-style otherwise) + array of the given shape with the given number of bytes + per element. + */ + + PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf, + Py_ssize_t len, int readonly, + int flags); + + /* Fills in a buffer-info structure correctly for an exporter + that can only share a contiguous chunk of memory of + "unsigned bytes" of the given length. Returns 0 on success + and -1 (with raising an error) on error. + */ + + PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view); + + /* Releases a Py_buffer obtained from getbuffer ParseTuple's s*. + */ + + PyAPI_FUNC(PyObject *) PyObject_Format(PyObject* obj, + PyObject *format_spec); + /* + Takes an arbitrary object and returns the result of + calling obj.__format__(format_spec). + */ + +/* Iterators */ + + PyAPI_FUNC(PyObject *) PyObject_GetIter(PyObject *); + /* Takes an object and returns an iterator for it. + This is typically a new iterator but if the argument + is an iterator, this returns itself. */ + +#define PyIter_Check(obj) \ + (PyType_HasFeature((obj)->ob_type, Py_TPFLAGS_HAVE_ITER) && \ + (obj)->ob_type->tp_iternext != NULL && \ + (obj)->ob_type->tp_iternext != &_PyObject_NextNotImplemented) + + PyAPI_FUNC(PyObject *) PyIter_Next(PyObject *); + /* Takes an iterator object and calls its tp_iternext slot, + returning the next value. If the iterator is exhausted, + this returns NULL without setting an exception. + NULL with an exception means an error occurred. */ + +/* Number Protocol:*/ + + PyAPI_FUNC(int) PyNumber_Check(PyObject *o); + + /* + Returns 1 if the object, o, provides numeric protocols, and + false otherwise. + + This function always succeeds. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Add(PyObject *o1, PyObject *o2); + + /* + Returns the result of adding o1 and o2, or null on failure. + This is the equivalent of the Python expression: o1+o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Subtract(PyObject *o1, PyObject *o2); + + /* + Returns the result of subtracting o2 from o1, or null on + failure. This is the equivalent of the Python expression: + o1-o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Multiply(PyObject *o1, PyObject *o2); + + /* + Returns the result of multiplying o1 and o2, or null on + failure. This is the equivalent of the Python expression: + o1*o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Divide(PyObject *o1, PyObject *o2); + + /* + Returns the result of dividing o1 by o2, or null on failure. + This is the equivalent of the Python expression: o1/o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_FloorDivide(PyObject *o1, PyObject *o2); + + /* + Returns the result of dividing o1 by o2 giving an integral result, + or null on failure. + This is the equivalent of the Python expression: o1//o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_TrueDivide(PyObject *o1, PyObject *o2); + + /* + Returns the result of dividing o1 by o2 giving a float result, + or null on failure. + This is the equivalent of the Python expression: o1/o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Remainder(PyObject *o1, PyObject *o2); + + /* + Returns the remainder of dividing o1 by o2, or null on + failure. This is the equivalent of the Python expression: + o1%o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Divmod(PyObject *o1, PyObject *o2); + + /* + See the built-in function divmod. Returns NULL on failure. + This is the equivalent of the Python expression: + divmod(o1,o2). + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Power(PyObject *o1, PyObject *o2, + PyObject *o3); + + /* + See the built-in function pow. Returns NULL on failure. + This is the equivalent of the Python expression: + pow(o1,o2,o3), where o3 is optional. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Negative(PyObject *o); + + /* + Returns the negation of o on success, or null on failure. + This is the equivalent of the Python expression: -o. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Positive(PyObject *o); + + /* + Returns the (what?) of o on success, or NULL on failure. + This is the equivalent of the Python expression: +o. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Absolute(PyObject *o); + + /* + Returns the absolute value of o, or null on failure. This is + the equivalent of the Python expression: abs(o). + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Invert(PyObject *o); + + /* + Returns the bitwise negation of o on success, or NULL on + failure. This is the equivalent of the Python expression: + ~o. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Lshift(PyObject *o1, PyObject *o2); + + /* + Returns the result of left shifting o1 by o2 on success, or + NULL on failure. This is the equivalent of the Python + expression: o1 << o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Rshift(PyObject *o1, PyObject *o2); + + /* + Returns the result of right shifting o1 by o2 on success, or + NULL on failure. This is the equivalent of the Python + expression: o1 >> o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_And(PyObject *o1, PyObject *o2); + + /* + Returns the result of bitwise and of o1 and o2 on success, or + NULL on failure. This is the equivalent of the Python + expression: o1&o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Xor(PyObject *o1, PyObject *o2); + + /* + Returns the bitwise exclusive or of o1 by o2 on success, or + NULL on failure. This is the equivalent of the Python + expression: o1^o2. + + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Or(PyObject *o1, PyObject *o2); + + /* + Returns the result of bitwise or on o1 and o2 on success, or + NULL on failure. This is the equivalent of the Python + expression: o1|o2. + + */ + + /* Implemented elsewhere: + + int PyNumber_Coerce(PyObject **p1, PyObject **p2); + + This function takes the addresses of two variables of type + PyObject*. + + If the objects pointed to by *p1 and *p2 have the same type, + increment their reference count and return 0 (success). + If the objects can be converted to a common numeric type, + replace *p1 and *p2 by their converted value (with 'new' + reference counts), and return 0. + If no conversion is possible, or if some other error occurs, + return -1 (failure) and don't increment the reference counts. + The call PyNumber_Coerce(&o1, &o2) is equivalent to the Python + statement o1, o2 = coerce(o1, o2). + + */ + +#define PyIndex_Check(obj) \ + ((obj)->ob_type->tp_as_number != NULL && \ + PyType_HasFeature((obj)->ob_type, Py_TPFLAGS_HAVE_INDEX) && \ + (obj)->ob_type->tp_as_number->nb_index != NULL) + + PyAPI_FUNC(PyObject *) PyNumber_Index(PyObject *o); + + /* + Returns the object converted to a Python long or int + or NULL with an error raised on failure. + */ + + PyAPI_FUNC(Py_ssize_t) PyNumber_AsSsize_t(PyObject *o, PyObject *exc); + + /* + Returns the Integral instance converted to an int. The + instance is expected to be int or long or have an __int__ + method. Steals integral's reference. error_format will be + used to create the TypeError if integral isn't actually an + Integral instance. error_format should be a format string + that can accept a char* naming integral's type. + */ + + PyAPI_FUNC(PyObject *) _PyNumber_ConvertIntegralToInt( + PyObject *integral, + const char* error_format); + + /* + Returns the object converted to Py_ssize_t by going through + PyNumber_Index first. If an overflow error occurs while + converting the int-or-long to Py_ssize_t, then the second argument + is the error-type to return. If it is NULL, then the overflow error + is cleared and the value is clipped. + */ + + PyAPI_FUNC(PyObject *) PyNumber_Int(PyObject *o); + + /* + Returns the o converted to an integer object on success, or + NULL on failure. This is the equivalent of the Python + expression: int(o). + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Long(PyObject *o); + + /* + Returns the o converted to a long integer object on success, + or NULL on failure. This is the equivalent of the Python + expression: long(o). + + */ + + PyAPI_FUNC(PyObject *) PyNumber_Float(PyObject *o); + + /* + Returns the o converted to a float object on success, or NULL + on failure. This is the equivalent of the Python expression: + float(o). + */ + +/* In-place variants of (some of) the above number protocol functions */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceAdd(PyObject *o1, PyObject *o2); + + /* + Returns the result of adding o2 to o1, possibly in-place, or null + on failure. This is the equivalent of the Python expression: + o1 += o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceSubtract(PyObject *o1, PyObject *o2); + + /* + Returns the result of subtracting o2 from o1, possibly in-place or + null on failure. This is the equivalent of the Python expression: + o1 -= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceMultiply(PyObject *o1, PyObject *o2); + + /* + Returns the result of multiplying o1 by o2, possibly in-place, or + null on failure. This is the equivalent of the Python expression: + o1 *= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceDivide(PyObject *o1, PyObject *o2); + + /* + Returns the result of dividing o1 by o2, possibly in-place, or null + on failure. This is the equivalent of the Python expression: + o1 /= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceFloorDivide(PyObject *o1, + PyObject *o2); + + /* + Returns the result of dividing o1 by o2 giving an integral result, + possibly in-place, or null on failure. + This is the equivalent of the Python expression: + o1 /= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceTrueDivide(PyObject *o1, + PyObject *o2); + + /* + Returns the result of dividing o1 by o2 giving a float result, + possibly in-place, or null on failure. + This is the equivalent of the Python expression: + o1 /= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceRemainder(PyObject *o1, PyObject *o2); + + /* + Returns the remainder of dividing o1 by o2, possibly in-place, or + null on failure. This is the equivalent of the Python expression: + o1 %= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlacePower(PyObject *o1, PyObject *o2, + PyObject *o3); + + /* + Returns the result of raising o1 to the power of o2, possibly + in-place, or null on failure. This is the equivalent of the Python + expression: o1 **= o2, or pow(o1, o2, o3) if o3 is present. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceLshift(PyObject *o1, PyObject *o2); + + /* + Returns the result of left shifting o1 by o2, possibly in-place, or + null on failure. This is the equivalent of the Python expression: + o1 <<= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceRshift(PyObject *o1, PyObject *o2); + + /* + Returns the result of right shifting o1 by o2, possibly in-place or + null on failure. This is the equivalent of the Python expression: + o1 >>= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceAnd(PyObject *o1, PyObject *o2); + + /* + Returns the result of bitwise and of o1 and o2, possibly in-place, + or null on failure. This is the equivalent of the Python + expression: o1 &= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceXor(PyObject *o1, PyObject *o2); + + /* + Returns the bitwise exclusive or of o1 by o2, possibly in-place, or + null on failure. This is the equivalent of the Python expression: + o1 ^= o2. + + */ + + PyAPI_FUNC(PyObject *) PyNumber_InPlaceOr(PyObject *o1, PyObject *o2); + + /* + Returns the result of bitwise or of o1 and o2, possibly in-place, + or null on failure. This is the equivalent of the Python + expression: o1 |= o2. + + */ + + + PyAPI_FUNC(PyObject *) PyNumber_ToBase(PyObject *n, int base); + + /* + Returns the integer n converted to a string with a base, with a base + marker of 0b, 0o or 0x prefixed if applicable. + If n is not an int object, it is converted with PyNumber_Index first. + */ + + +/* Sequence protocol:*/ + + PyAPI_FUNC(int) PySequence_Check(PyObject *o); + + /* + Return 1 if the object provides sequence protocol, and zero + otherwise. + + This function always succeeds. + + */ + + PyAPI_FUNC(Py_ssize_t) PySequence_Size(PyObject *o); + + /* + Return the size of sequence object o, or -1 on failure. + + */ + + /* For DLL compatibility */ +#undef PySequence_Length + PyAPI_FUNC(Py_ssize_t) PySequence_Length(PyObject *o); +#define PySequence_Length PySequence_Size + + + PyAPI_FUNC(PyObject *) PySequence_Concat(PyObject *o1, PyObject *o2); + + /* + Return the concatenation of o1 and o2 on success, and NULL on + failure. This is the equivalent of the Python + expression: o1+o2. + + */ + + PyAPI_FUNC(PyObject *) PySequence_Repeat(PyObject *o, Py_ssize_t count); + + /* + Return the result of repeating sequence object o count times, + or NULL on failure. This is the equivalent of the Python + expression: o1*count. + + */ + + PyAPI_FUNC(PyObject *) PySequence_GetItem(PyObject *o, Py_ssize_t i); + + /* + Return the ith element of o, or NULL on failure. This is the + equivalent of the Python expression: o[i]. + */ + + PyAPI_FUNC(PyObject *) PySequence_GetSlice(PyObject *o, Py_ssize_t i1, Py_ssize_t i2); + + /* + Return the slice of sequence object o between i1 and i2, or + NULL on failure. This is the equivalent of the Python + expression: o[i1:i2]. + + */ + + PyAPI_FUNC(int) PySequence_SetItem(PyObject *o, Py_ssize_t i, PyObject *v); + + /* + Assign object v to the ith element of o. Returns + -1 on failure. This is the equivalent of the Python + statement: o[i]=v. + + */ + + PyAPI_FUNC(int) PySequence_DelItem(PyObject *o, Py_ssize_t i); + + /* + Delete the ith element of object v. Returns + -1 on failure. This is the equivalent of the Python + statement: del o[i]. + */ + + PyAPI_FUNC(int) PySequence_SetSlice(PyObject *o, Py_ssize_t i1, Py_ssize_t i2, + PyObject *v); + + /* + Assign the sequence object, v, to the slice in sequence + object, o, from i1 to i2. Returns -1 on failure. This is the + equivalent of the Python statement: o[i1:i2]=v. + */ + + PyAPI_FUNC(int) PySequence_DelSlice(PyObject *o, Py_ssize_t i1, Py_ssize_t i2); + + /* + Delete the slice in sequence object, o, from i1 to i2. + Returns -1 on failure. This is the equivalent of the Python + statement: del o[i1:i2]. + */ + + PyAPI_FUNC(PyObject *) PySequence_Tuple(PyObject *o); + + /* + Returns the sequence, o, as a tuple on success, and NULL on failure. + This is equivalent to the Python expression: tuple(o) + */ + + + PyAPI_FUNC(PyObject *) PySequence_List(PyObject *o); + /* + Returns the sequence, o, as a list on success, and NULL on failure. + This is equivalent to the Python expression: list(o) + */ + + PyAPI_FUNC(PyObject *) PySequence_Fast(PyObject *o, const char* m); + /* + Return the sequence, o, as a list, unless it's already a + tuple or list. Use PySequence_Fast_GET_ITEM to access the + members of this list, and PySequence_Fast_GET_SIZE to get its length. + + Returns NULL on failure. If the object does not support iteration, + raises a TypeError exception with m as the message text. + */ + +#define PySequence_Fast_GET_SIZE(o) \ + (PyList_Check(o) ? PyList_GET_SIZE(o) : PyTuple_GET_SIZE(o)) + /* + Return the size of o, assuming that o was returned by + PySequence_Fast and is not NULL. + */ + +#define PySequence_Fast_GET_ITEM(o, i)\ + (PyList_Check(o) ? PyList_GET_ITEM(o, i) : PyTuple_GET_ITEM(o, i)) + /* + Return the ith element of o, assuming that o was returned by + PySequence_Fast, and that i is within bounds. + */ + +#define PySequence_ITEM(o, i)\ + ( Py_TYPE(o)->tp_as_sequence->sq_item(o, i) ) + /* Assume tp_as_sequence and sq_item exist and that i does not + need to be corrected for a negative index + */ + +#define PySequence_Fast_ITEMS(sf) \ + (PyList_Check(sf) ? ((PyListObject *)(sf))->ob_item \ + : ((PyTupleObject *)(sf))->ob_item) + /* Return a pointer to the underlying item array for + an object retured by PySequence_Fast */ + + PyAPI_FUNC(Py_ssize_t) PySequence_Count(PyObject *o, PyObject *value); + + /* + Return the number of occurrences on value on o, that is, + return the number of keys for which o[key]==value. On + failure, return -1. This is equivalent to the Python + expression: o.count(value). + */ + + PyAPI_FUNC(int) PySequence_Contains(PyObject *seq, PyObject *ob); + /* + Return -1 if error; 1 if ob in seq; 0 if ob not in seq. + Use __contains__ if possible, else _PySequence_IterSearch(). + */ + +#define PY_ITERSEARCH_COUNT 1 +#define PY_ITERSEARCH_INDEX 2 +#define PY_ITERSEARCH_CONTAINS 3 + PyAPI_FUNC(Py_ssize_t) _PySequence_IterSearch(PyObject *seq, + PyObject *obj, int operation); + /* + Iterate over seq. Result depends on the operation: + PY_ITERSEARCH_COUNT: return # of times obj appears in seq; -1 if + error. + PY_ITERSEARCH_INDEX: return 0-based index of first occurrence of + obj in seq; set ValueError and return -1 if none found; + also return -1 on error. + PY_ITERSEARCH_CONTAINS: return 1 if obj in seq, else 0; -1 on + error. + */ + +/* For DLL-level backwards compatibility */ +#undef PySequence_In + PyAPI_FUNC(int) PySequence_In(PyObject *o, PyObject *value); + +/* For source-level backwards compatibility */ +#define PySequence_In PySequence_Contains + + /* + Determine if o contains value. If an item in o is equal to + X, return 1, otherwise return 0. On error, return -1. This + is equivalent to the Python expression: value in o. + */ + + PyAPI_FUNC(Py_ssize_t) PySequence_Index(PyObject *o, PyObject *value); + + /* + Return the first index for which o[i]=value. On error, + return -1. This is equivalent to the Python + expression: o.index(value). + */ + +/* In-place versions of some of the above Sequence functions. */ + + PyAPI_FUNC(PyObject *) PySequence_InPlaceConcat(PyObject *o1, PyObject *o2); + + /* + Append o2 to o1, in-place when possible. Return the resulting + object, which could be o1, or NULL on failure. This is the + equivalent of the Python expression: o1 += o2. + + */ + + PyAPI_FUNC(PyObject *) PySequence_InPlaceRepeat(PyObject *o, Py_ssize_t count); + + /* + Repeat o1 by count, in-place when possible. Return the resulting + object, which could be o1, or NULL on failure. This is the + equivalent of the Python expression: o1 *= count. + + */ + +/* Mapping protocol:*/ + + PyAPI_FUNC(int) PyMapping_Check(PyObject *o); + + /* + Return 1 if the object provides mapping protocol, and zero + otherwise. + + This function always succeeds. + */ + + PyAPI_FUNC(Py_ssize_t) PyMapping_Size(PyObject *o); + + /* + Returns the number of keys in object o on success, and -1 on + failure. For objects that do not provide sequence protocol, + this is equivalent to the Python expression: len(o). + */ + + /* For DLL compatibility */ +#undef PyMapping_Length + PyAPI_FUNC(Py_ssize_t) PyMapping_Length(PyObject *o); +#define PyMapping_Length PyMapping_Size + + + /* implemented as a macro: + + int PyMapping_DelItemString(PyObject *o, char *key); + + Remove the mapping for object, key, from the object *o. + Returns -1 on failure. This is equivalent to + the Python statement: del o[key]. + */ +#define PyMapping_DelItemString(O,K) PyObject_DelItemString((O),(K)) + + /* implemented as a macro: + + int PyMapping_DelItem(PyObject *o, PyObject *key); + + Remove the mapping for object, key, from the object *o. + Returns -1 on failure. This is equivalent to + the Python statement: del o[key]. + */ +#define PyMapping_DelItem(O,K) PyObject_DelItem((O),(K)) + + PyAPI_FUNC(int) PyMapping_HasKeyString(PyObject *o, char *key); + + /* + On success, return 1 if the mapping object has the key, key, + and 0 otherwise. This is equivalent to the Python expression: + o.has_key(key). + + This function always succeeds. + */ + + PyAPI_FUNC(int) PyMapping_HasKey(PyObject *o, PyObject *key); + + /* + Return 1 if the mapping object has the key, key, + and 0 otherwise. This is equivalent to the Python expression: + o.has_key(key). + + This function always succeeds. + + */ + + /* Implemented as macro: + + PyObject *PyMapping_Keys(PyObject *o); + + On success, return a list of the keys in object o. On + failure, return NULL. This is equivalent to the Python + expression: o.keys(). + */ +#define PyMapping_Keys(O) PyObject_CallMethod(O,"keys",NULL) + + /* Implemented as macro: + + PyObject *PyMapping_Values(PyObject *o); + + On success, return a list of the values in object o. On + failure, return NULL. This is equivalent to the Python + expression: o.values(). + */ +#define PyMapping_Values(O) PyObject_CallMethod(O,"values",NULL) + + /* Implemented as macro: + + PyObject *PyMapping_Items(PyObject *o); + + On success, return a list of the items in object o, where + each item is a tuple containing a key-value pair. On + failure, return NULL. This is equivalent to the Python + expression: o.items(). + + */ +#define PyMapping_Items(O) PyObject_CallMethod(O,"items",NULL) + + PyAPI_FUNC(PyObject *) PyMapping_GetItemString(PyObject *o, char *key); + + /* + Return element of o corresponding to the object, key, or NULL + on failure. This is the equivalent of the Python expression: + o[key]. + */ + + PyAPI_FUNC(int) PyMapping_SetItemString(PyObject *o, char *key, + PyObject *value); + + /* + Map the object, key, to the value, v. Returns + -1 on failure. This is the equivalent of the Python + statement: o[key]=v. + */ + + +PyAPI_FUNC(int) PyObject_IsInstance(PyObject *object, PyObject *typeorclass); + /* isinstance(object, typeorclass) */ + +PyAPI_FUNC(int) PyObject_IsSubclass(PyObject *object, PyObject *typeorclass); + /* issubclass(object, typeorclass) */ + + +PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls); + +PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls); + + +/* For internal use by buffer API functions */ +PyAPI_FUNC(void) _Py_add_one_to_index_F(int nd, Py_ssize_t *index, + const Py_ssize_t *shape); +PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index, + const Py_ssize_t *shape); + + +#ifdef __cplusplus +} +#endif +#endif /* Py_ABSTRACTOBJECT_H */