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use libc::{c_char, c_int};

use crate::object::*;
use crate::pyport::Py_ssize_t;

#[cfg_attr(windows, link(name = "pythonXY"))]
extern "C" {
    pub fn PyErr_SetNone(arg1: *mut PyObject) -> ();
    pub fn PyErr_SetObject(arg1: *mut PyObject, arg2: *mut PyObject) -> ();
    pub fn PyErr_SetString(exception: *mut PyObject, string: *const c_char) -> ();
    pub fn PyErr_Occurred() -> *mut PyObject;
    pub fn PyErr_Clear() -> ();
    pub fn PyErr_Fetch(
        arg1: *mut *mut PyObject,
        arg2: *mut *mut PyObject,
        arg3: *mut *mut PyObject,
    ) -> ();
    pub fn PyErr_Restore(arg1: *mut PyObject, arg2: *mut PyObject, arg3: *mut PyObject) -> ();
    pub fn PyErr_GetExcInfo(
        arg1: *mut *mut PyObject,
        arg2: *mut *mut PyObject,
        arg3: *mut *mut PyObject,
    ) -> ();
    #[cfg(Py_3_11)]
    pub fn PyErr_GetHandledException() -> *mut PyObject;
    #[cfg(Py_3_11)]
    pub fn PyErr_SetHandledException(exc: *mut PyObject);
    pub fn PyErr_SetExcInfo(arg1: *mut PyObject, arg2: *mut PyObject, arg3: *mut PyObject) -> ();
    pub fn Py_FatalError(message: *const c_char) -> !;
    pub fn PyErr_GivenExceptionMatches(arg1: *mut PyObject, arg2: *mut PyObject) -> c_int;
    pub fn PyErr_ExceptionMatches(arg1: *mut PyObject) -> c_int;
    pub fn PyErr_NormalizeException(
        arg1: *mut *mut PyObject,
        arg2: *mut *mut PyObject,
        arg3: *mut *mut PyObject,
    ) -> ();
    pub fn PyException_SetTraceback(arg1: *mut PyObject, arg2: *mut PyObject) -> c_int;
    pub fn PyException_GetTraceback(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyException_GetCause(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyException_SetCause(arg1: *mut PyObject, arg2: *mut PyObject) -> ();
    pub fn PyException_GetContext(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyException_SetContext(arg1: *mut PyObject, arg2: *mut PyObject) -> ();
}

#[inline]
pub unsafe fn PyExceptionClass_Check(x: *mut PyObject) -> c_int {
    (PyType_Check(x) != 0
        && PyType_FastSubclass(x as *mut PyTypeObject, Py_TPFLAGS_BASE_EXC_SUBCLASS) != 0)
        as c_int
}

#[inline]
pub unsafe fn PyExceptionInstance_Check(x: *mut PyObject) -> c_int {
    PyType_FastSubclass((*x).ob_type, Py_TPFLAGS_BASE_EXC_SUBCLASS)
}

#[inline]
pub unsafe fn PyExceptionInstance_Class(x: *mut PyObject) -> *mut PyObject {
    (*x).ob_type as *mut PyObject
}

#[cfg(all(not(Py_3_8), not(Py_LIMITED_API)))]
#[inline]
pub unsafe fn PyExceptionClass_Name(x: *mut PyObject) -> *const c_char {
    (*(*x).ob_type).tp_name
}

#[cfg_attr(windows, link(name = "pythonXY"))]
extern "C" {
    #[cfg(Py_3_8)]
    pub fn PyExceptionClass_Name(o: *mut PyObject) -> *const c_char;

    pub static mut PyExc_BaseException: *mut PyObject;
    pub static mut PyExc_Exception: *mut PyObject;
    #[cfg(Py_3_11)]
    pub static mut PyExc_BaseExceptionGroup: *mut PyObject;
    #[cfg(Py_3_5)]
    pub static mut PyExc_StopAsyncIteration: *mut PyObject;
    pub static mut PyExc_StopIteration: *mut PyObject;
    pub static mut PyExc_GeneratorExit: *mut PyObject;
    pub static mut PyExc_ArithmeticError: *mut PyObject;
    pub static mut PyExc_LookupError: *mut PyObject;
    pub static mut PyExc_AssertionError: *mut PyObject;
    pub static mut PyExc_AttributeError: *mut PyObject;
    pub static mut PyExc_BufferError: *mut PyObject;
    pub static mut PyExc_EOFError: *mut PyObject;
    pub static mut PyExc_FloatingPointError: *mut PyObject;
    pub static mut PyExc_OSError: *mut PyObject;
    pub static mut PyExc_ImportError: *mut PyObject;
    #[cfg(Py_3_6)]
    pub static mut PyExc_ModuleNotFoundError: *mut PyObject;
    pub static mut PyExc_IndexError: *mut PyObject;
    pub static mut PyExc_KeyError: *mut PyObject;
    pub static mut PyExc_KeyboardInterrupt: *mut PyObject;
    pub static mut PyExc_MemoryError: *mut PyObject;
    pub static mut PyExc_NameError: *mut PyObject;
    pub static mut PyExc_OverflowError: *mut PyObject;
    pub static mut PyExc_RuntimeError: *mut PyObject;
    #[cfg(Py_3_5)]
    pub static mut PyExc_RecursionError: *mut PyObject;
    pub static mut PyExc_NotImplementedError: *mut PyObject;
    pub static mut PyExc_SyntaxError: *mut PyObject;
    pub static mut PyExc_IndentationError: *mut PyObject;
    pub static mut PyExc_TabError: *mut PyObject;
    pub static mut PyExc_ReferenceError: *mut PyObject;
    pub static mut PyExc_SystemError: *mut PyObject;
    pub static mut PyExc_SystemExit: *mut PyObject;
    pub static mut PyExc_TypeError: *mut PyObject;
    pub static mut PyExc_UnboundLocalError: *mut PyObject;
    pub static mut PyExc_UnicodeError: *mut PyObject;
    pub static mut PyExc_UnicodeEncodeError: *mut PyObject;
    pub static mut PyExc_UnicodeDecodeError: *mut PyObject;
    pub static mut PyExc_UnicodeTranslateError: *mut PyObject;
    pub static mut PyExc_ValueError: *mut PyObject;
    pub static mut PyExc_ZeroDivisionError: *mut PyObject;
    pub static mut PyExc_BlockingIOError: *mut PyObject;
    pub static mut PyExc_BrokenPipeError: *mut PyObject;
    pub static mut PyExc_ChildProcessError: *mut PyObject;
    pub static mut PyExc_ConnectionError: *mut PyObject;
    pub static mut PyExc_ConnectionAbortedError: *mut PyObject;
    pub static mut PyExc_ConnectionRefusedError: *mut PyObject;
    pub static mut PyExc_ConnectionResetError: *mut PyObject;
    pub static mut PyExc_FileExistsError: *mut PyObject;
    pub static mut PyExc_FileNotFoundError: *mut PyObject;
    pub static mut PyExc_InterruptedError: *mut PyObject;
    pub static mut PyExc_IsADirectoryError: *mut PyObject;
    pub static mut PyExc_NotADirectoryError: *mut PyObject;
    pub static mut PyExc_PermissionError: *mut PyObject;
    pub static mut PyExc_ProcessLookupError: *mut PyObject;

    // Compatibility aliases
    pub static mut PyExc_TimeoutError: *mut PyObject;
    pub static mut PyExc_EnvironmentError: *mut PyObject;
    pub static mut PyExc_IOError: *mut PyObject;
    #[cfg(windows)]
    pub static mut PyExc_WindowsError: *mut PyObject;
    #[cfg(not(Py_3_6))]
    pub static mut PyExc_RecursionErrorInst: *mut PyObject;

    // Predefined warning categories
    pub static mut PyExc_Warning: *mut PyObject;
    pub static mut PyExc_UserWarning: *mut PyObject;
    pub static mut PyExc_DeprecationWarning: *mut PyObject;
    pub static mut PyExc_PendingDeprecationWarning: *mut PyObject;
    pub static mut PyExc_SyntaxWarning: *mut PyObject;
    pub static mut PyExc_RuntimeWarning: *mut PyObject;
    pub static mut PyExc_FutureWarning: *mut PyObject;
    pub static mut PyExc_ImportWarning: *mut PyObject;
    pub static mut PyExc_UnicodeWarning: *mut PyObject;
    pub static mut PyExc_BytesWarning: *mut PyObject;
    #[cfg(Py_3_10)]
    pub static mut PyExc_EncodingWarning: *mut PyObject;
    pub static mut PyExc_ResourceWarning: *mut PyObject;

    pub fn PyErr_BadArgument() -> c_int;
    pub fn PyErr_NoMemory() -> *mut PyObject;
    pub fn PyErr_SetFromErrno(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyErr_SetFromErrnoWithFilenameObject(
        arg1: *mut PyObject,
        arg2: *mut PyObject,
    ) -> *mut PyObject;
    #[cfg(Py_3_4)]
    pub fn PyErr_SetFromErrnoWithFilenameObjects(
        arg1: *mut PyObject,
        arg2: *mut PyObject,
        arg3: *mut PyObject,
    ) -> *mut PyObject;
    pub fn PyErr_SetFromErrnoWithFilename(
        exc: *mut PyObject,
        filename: *const c_char,
    ) -> *mut PyObject;
    pub fn PyErr_Format(exception: *mut PyObject, format: *const c_char, ...) -> *mut PyObject;
    #[cfg(Py_3_6)]
    pub fn PyErr_SetImportErrorSubclass(
        arg1: *mut PyObject,
        arg2: *mut PyObject,
        arg3: *mut PyObject,
        arg4: *mut PyObject,
    ) -> *mut PyObject;
    pub fn PyErr_SetImportError(
        arg1: *mut PyObject,
        arg2: *mut PyObject,
        arg3: *mut PyObject,
    ) -> *mut PyObject;
    pub fn PyErr_BadInternalCall() -> ();
    pub fn _PyErr_BadInternalCall(filename: *const c_char, lineno: c_int) -> ();
    pub fn PyErr_NewException(
        name: *const c_char,
        base: *mut PyObject,
        dict: *mut PyObject,
    ) -> *mut PyObject;
    pub fn PyErr_NewExceptionWithDoc(
        name: *const c_char,
        doc: *const c_char,
        base: *mut PyObject,
        dict: *mut PyObject,
    ) -> *mut PyObject;
    pub fn PyErr_WriteUnraisable(arg1: *mut PyObject) -> ();
    pub fn PyErr_CheckSignals() -> c_int;
    pub fn PyErr_SetInterrupt() -> ();
    #[cfg(Py_3_10)]
    pub fn PyErr_SetInterruptEx(signum: c_int) -> c_int;
    pub fn PyErr_SyntaxLocation(filename: *const c_char, lineno: c_int) -> ();
    pub fn PyErr_SyntaxLocationEx(filename: *const c_char, lineno: c_int, col_offset: c_int) -> ();
    pub fn PyErr_ProgramText(filename: *const c_char, lineno: c_int) -> *mut PyObject;
    pub fn PyUnicodeDecodeError_Create(
        encoding: *const c_char,
        object: *const c_char,
        length: Py_ssize_t,
        start: Py_ssize_t,
        end: Py_ssize_t,
        reason: *const c_char,
    ) -> *mut PyObject;
    pub fn PyUnicodeEncodeError_GetEncoding(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeDecodeError_GetEncoding(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeEncodeError_GetObject(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeDecodeError_GetObject(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeTranslateError_GetObject(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeEncodeError_GetStart(arg1: *mut PyObject, arg2: *mut Py_ssize_t) -> c_int;
    pub fn PyUnicodeDecodeError_GetStart(arg1: *mut PyObject, arg2: *mut Py_ssize_t) -> c_int;
    pub fn PyUnicodeTranslateError_GetStart(arg1: *mut PyObject, arg2: *mut Py_ssize_t) -> c_int;
    pub fn PyUnicodeEncodeError_SetStart(arg1: *mut PyObject, arg2: Py_ssize_t) -> c_int;
    pub fn PyUnicodeDecodeError_SetStart(arg1: *mut PyObject, arg2: Py_ssize_t) -> c_int;
    pub fn PyUnicodeTranslateError_SetStart(arg1: *mut PyObject, arg2: Py_ssize_t) -> c_int;
    pub fn PyUnicodeEncodeError_GetEnd(arg1: *mut PyObject, arg2: *mut Py_ssize_t) -> c_int;
    pub fn PyUnicodeDecodeError_GetEnd(arg1: *mut PyObject, arg2: *mut Py_ssize_t) -> c_int;
    pub fn PyUnicodeTranslateError_GetEnd(arg1: *mut PyObject, arg2: *mut Py_ssize_t) -> c_int;
    pub fn PyUnicodeEncodeError_SetEnd(arg1: *mut PyObject, arg2: Py_ssize_t) -> c_int;
    pub fn PyUnicodeDecodeError_SetEnd(arg1: *mut PyObject, arg2: Py_ssize_t) -> c_int;
    pub fn PyUnicodeTranslateError_SetEnd(arg1: *mut PyObject, arg2: Py_ssize_t) -> c_int;
    pub fn PyUnicodeEncodeError_GetReason(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeDecodeError_GetReason(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeTranslateError_GetReason(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyUnicodeEncodeError_SetReason(exc: *mut PyObject, reason: *const c_char) -> c_int;
    pub fn PyUnicodeDecodeError_SetReason(exc: *mut PyObject, reason: *const c_char) -> c_int;
    pub fn PyUnicodeTranslateError_SetReason(exc: *mut PyObject, reason: *const c_char) -> c_int;
}