| #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 |
| #define _PyObject_CallMethodId _PyObject_CallMethodId_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) |
| |
| /* 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. |
| |
| */ |
| |
| /* 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() and print() built-in functions. |
| |
| */ |
| |
| /* 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: o(*args). |
| */ |
| |
| PyAPI_FUNC(PyObject *) PyObject_CallFunction(PyObject *callable_object, |
| const 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: o(*args). |
| */ |
| |
| |
| PyAPI_FUNC(PyObject *) PyObject_CallMethod(PyObject *o, |
| const char *method, |
| const 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_CallMethodId(PyObject *o, |
| _Py_Identifier *method, |
| const char *format, ...); |
| |
| /* |
| Like PyObject_CallMethod, but expect a _Py_Identifier* as the |
| method name. |
| */ |
| |
| PyAPI_FUNC(PyObject *) _PyObject_CallFunction_SizeT(PyObject *callable, |
| const char *format, |
| ...); |
| PyAPI_FUNC(PyObject *) _PyObject_CallMethod_SizeT(PyObject *o, |
| const char *name, |
| const char *format, |
| ...); |
| PyAPI_FUNC(PyObject *) _PyObject_CallMethodId_SizeT(PyObject *o, |
| _Py_Identifier *name, |
| const 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: o(*args). |
| */ |
| |
| |
| PyAPI_FUNC(PyObject *) PyObject_CallMethodObjArgs(PyObject *o, |
| PyObject *method, ...); |
| PyAPI_FUNC(PyObject *) _PyObject_CallMethodIdObjArgs(PyObject *o, |
| struct _Py_Identifier *method, |
| ...); |
| |
| /* |
| 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 |
| |
| #ifndef Py_LIMITED_API |
| PyAPI_FUNC(int) _PyObject_HasLen(PyObject *o); |
| #endif |
| 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]. |
| */ |
| |
| /* old buffer API |
| FIXME: usage of these should all be replaced in Python itself |
| but for backwards compatibility we will implement them. |
| Their usage without a corresponding "unlock" mechansim |
| may create issues (but they would already be there). */ |
| |
| 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 (writable, |
| single segment) buffer interface and returns a pointer to a |
| writable 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 */ |
| |
| #ifndef Py_LIMITED_API |
| #define PyObject_CheckBuffer(obj) \ |
| (((obj)->ob_type->tp_as_buffer != NULL) && \ |
| ((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 */ |
| |
| |
| |
| /* Implementation in memoryobject.c */ |
| PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, Py_buffer *view, |
| Py_ssize_t len, char order); |
| |
| PyAPI_FUNC(int) PyBuffer_FromContiguous(Py_buffer *view, void *buf, |
| Py_ssize_t len, char order); |
| |
| |
| /* 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', then if 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(const 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*. |
| */ |
| #endif /* Py_LIMITED_API */ |
| |
| 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) \ |
| ((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_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. |
| */ |
| |
| #define PyIndex_Check(obj) \ |
| ((obj)->ob_type->tp_as_number != NULL && \ |
| (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 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_Long(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_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_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); |
| /* |
| Returns 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(). |
| */ |
| |
| #ifndef Py_LIMITED_API |
| #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); |
| #endif |
| /* |
| 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: |
| key in o. |
| |
| 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: |
| key in o. |
| |
| This function always succeeds. |
| |
| */ |
| |
| PyAPI_FUNC(PyObject *) PyMapping_Keys(PyObject *o); |
| |
| /* |
| On success, return a list or tuple of the keys in object o. |
| On failure, return NULL. |
| */ |
| |
| PyAPI_FUNC(PyObject *) PyMapping_Values(PyObject *o); |
| |
| /* |
| On success, return a list or tuple of the values in object o. |
| On failure, return NULL. |
| */ |
| |
| PyAPI_FUNC(PyObject *) PyMapping_Items(PyObject *o); |
| |
| /* |
| On success, return a list or tuple of the items in object o, |
| where each item is a tuple containing a key-value pair. |
| On failure, return 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) */ |
| |
| |
| #ifndef Py_LIMITED_API |
| PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls); |
| |
| PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls); |
| |
| PyAPI_FUNC(char *const *) _PySequence_BytesToCharpArray(PyObject* self); |
| |
| PyAPI_FUNC(void) _Py_FreeCharPArray(char *const array[]); |
| #endif |
| |
| /* 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 */ |