use crate::object::*;
use crate::pyport::Py_ssize_t;
use std::os::raw::{c_char, c_int};

#[repr(C)]
#[derive(Debug)]
pub struct PyBaseExceptionObject {
    pub ob_base: PyObject,
    pub dict: *mut PyObject,
    pub args: *mut PyObject,
    pub traceback: *mut PyObject,
    pub context: *mut PyObject,
    pub cause: *mut PyObject,
    pub suppress_context: char,
}

#[repr(C)]
#[derive(Debug)]
pub struct PySyntaxErrorObject {
    pub exception_base: PyBaseExceptionObject,
    pub msg: *mut PyObject,
    pub filename: *mut PyObject,
    pub lineno: *mut PyObject,
    pub offset: *mut PyObject,
    pub text: *mut PyObject,
    pub print_file_and_line: *mut PyObject,
}

#[repr(C)]
#[derive(Debug)]
pub struct PyImportErrorObject {
    pub exception_base: PyBaseExceptionObject,
    pub msg: *mut PyObject,
    pub name: *mut PyObject,
    pub path: *mut PyObject,
}

#[repr(C)]
#[derive(Debug)]
pub struct PyUnicodeErrorObject {
    pub exception_base: PyBaseExceptionObject,
    pub encoding: *mut PyObject,
    pub object: *mut PyObject,
    pub start: Py_ssize_t,
    pub end: Py_ssize_t,
    pub reason: *mut PyObject,
}

#[repr(C)]
#[derive(Debug)]
pub struct PySystemExitObject {
    pub exception_base: PyBaseExceptionObject,
    pub code: *mut PyObject,
}

#[repr(C)]
#[derive(Debug)]
pub struct PyOSErrorObject {
    pub exception_base: PyBaseExceptionObject,
    pub myerrno: *mut PyObject,
    pub strerror: *mut PyObject,
    pub filename: *mut PyObject,
    pub filename2: *mut PyObject,
    #[cfg(windows)]
    pub winerror: *mut PyObject,
    pub written: Py_ssize_t,
}

#[repr(C)]
#[derive(Debug)]
pub struct PyStopIterationObject {
    pub exception_base: PyBaseExceptionObject,
    pub value: *mut PyObject,
}

extern "C" {
    #[cfg_attr(PyPy, link_name = "PyPyErr_SetNone")]
    pub fn PyErr_SetNone(arg1: *mut PyObject);
    #[cfg_attr(PyPy, link_name = "PyPyErr_SetObject")]
    pub fn PyErr_SetObject(arg1: *mut PyObject, arg2: *mut PyObject);
    #[cfg_attr(PyPy, link_name = "PyPyErr_SetString")]
    pub fn PyErr_SetString(exception: *mut PyObject, string: *const c_char);
    #[cfg_attr(PyPy, link_name = "PyPyErr_Occurred")]
    pub fn PyErr_Occurred() -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyErr_Clear")]
    pub fn PyErr_Clear();
    #[cfg_attr(PyPy, link_name = "PyPyErr_Fetch")]
    pub fn PyErr_Fetch(
        arg1: *mut *mut PyObject,
        arg2: *mut *mut PyObject,
        arg3: *mut *mut PyObject,
    );
    #[cfg_attr(PyPy, link_name = "PyPyErr_Restore")]
    pub fn PyErr_Restore(arg1: *mut PyObject, arg2: *mut PyObject, arg3: *mut PyObject);
    #[cfg_attr(PyPy, link_name = "PyPyErr_GetExcInfo")]
    pub fn PyErr_GetExcInfo(
        arg1: *mut *mut PyObject,
        arg2: *mut *mut PyObject,
        arg3: *mut *mut PyObject,
    );
    #[cfg_attr(PyPy, link_name = "PyPyErr_SetExcInfo")]
    pub fn PyErr_SetExcInfo(arg1: *mut PyObject, arg2: *mut PyObject, arg3: *mut PyObject);
    #[cfg_attr(PyPy, link_name = "PyPy_FatalError")]
    pub fn Py_FatalError(message: *const c_char) -> !;
    #[cfg_attr(PyPy, link_name = "PyPyErr_GivenExceptionMatches")]
    pub fn PyErr_GivenExceptionMatches(arg1: *mut PyObject, arg2: *mut PyObject) -> c_int;
    #[cfg_attr(PyPy, link_name = "PyPyErr_ExceptionMatches")]
    pub fn PyErr_ExceptionMatches(arg1: *mut PyObject) -> c_int;
    #[cfg_attr(PyPy, link_name = "PyPyErr_NormalizeException")]
    pub fn PyErr_NormalizeException(
        arg1: *mut *mut PyObject,
        arg2: *mut *mut PyObject,
        arg3: *mut *mut PyObject,
    );
    #[cfg_attr(PyPy, link_name = "PyPyException_SetTraceback")]
    pub fn PyException_SetTraceback(arg1: *mut PyObject, arg2: *mut PyObject) -> c_int;
    #[cfg_attr(PyPy, link_name = "PyPyException_GetTraceback")]
    pub fn PyException_GetTraceback(arg1: *mut PyObject) -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyException_GetCause")]
    pub fn PyException_GetCause(arg1: *mut PyObject) -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyException_SetCause")]
    pub fn PyException_SetCause(arg1: *mut PyObject, arg2: *mut PyObject);
    #[cfg_attr(PyPy, link_name = "PyPyException_GetContext")]
    pub fn PyException_GetContext(arg1: *mut PyObject) -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyException_SetContext")]
    pub fn PyException_SetContext(arg1: *mut PyObject, arg2: *mut PyObject);

    #[cfg(PyPy)]
    #[link_name = "PyPyExceptionInstance_Class"]
    pub fn PyExceptionInstance_Class(x: *mut PyObject) -> *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(Py_TYPE(x), Py_TPFLAGS_BASE_EXC_SUBCLASS)
}

#[inline]
#[cfg(not(PyPy))]
pub unsafe fn PyExceptionInstance_Class(x: *mut PyObject) -> *mut PyObject {
    Py_TYPE(x) as *mut PyObject
}

// ported from cpython exception.c (line 2096)
#[cfg(PyPy)]
pub unsafe 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 {
    crate::PyObject_CallFunction(
        PyExc_UnicodeDecodeError,
        std::ffi::CStr::from_bytes_with_nul(b"sy#nns\0")
            .unwrap()
            .as_ptr(),
        encoding,
        object,
        length,
        start,
        end,
    )
}

#[cfg_attr(windows, link(name = "pythonXY"))]
extern "C" {
    #[cfg_attr(PyPy, link_name = "PyPyExc_BaseException")]
    pub static mut PyExc_BaseException: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_Exception")]
    pub static mut PyExc_Exception: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_StopAsyncIteration")]
    pub static mut PyExc_StopAsyncIteration: *mut PyObject;

    #[cfg_attr(PyPy, link_name = "PyPyExc_StopIteration")]
    pub static mut PyExc_StopIteration: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_GeneratorExit")]
    pub static mut PyExc_GeneratorExit: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ArithmeticError")]
    pub static mut PyExc_ArithmeticError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_LookupError")]
    pub static mut PyExc_LookupError: *mut PyObject;

    #[cfg_attr(PyPy, link_name = "PyPyExc_AssertionError")]
    pub static mut PyExc_AssertionError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_AttributeError")]
    pub static mut PyExc_AttributeError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_BufferError")]
    pub static mut PyExc_BufferError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_EOFError")]
    pub static mut PyExc_EOFError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_FloatingPointError")]
    pub static mut PyExc_FloatingPointError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_OSError")]
    pub static mut PyExc_OSError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ImportError")]
    pub static mut PyExc_ImportError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ModuleNotFoundError")]
    pub static mut PyExc_ModuleNotFoundError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_IndexError")]
    pub static mut PyExc_IndexError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_KeyError")]
    pub static mut PyExc_KeyError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_KeyboardInterrupt")]
    pub static mut PyExc_KeyboardInterrupt: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_MemoryError")]
    pub static mut PyExc_MemoryError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_NameError")]
    pub static mut PyExc_NameError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_OverflowError")]
    pub static mut PyExc_OverflowError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_RuntimeError")]
    pub static mut PyExc_RuntimeError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_RecursionError")]
    pub static mut PyExc_RecursionError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_NotImplementedError")]
    pub static mut PyExc_NotImplementedError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_SyntaxError")]
    pub static mut PyExc_SyntaxError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_IndentationError")]
    pub static mut PyExc_IndentationError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_TabError")]
    pub static mut PyExc_TabError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ReferenceError")]
    pub static mut PyExc_ReferenceError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_SystemError")]
    pub static mut PyExc_SystemError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_SystemExit")]
    pub static mut PyExc_SystemExit: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_TypeError")]
    pub static mut PyExc_TypeError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_UnboundLocalError")]
    pub static mut PyExc_UnboundLocalError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_UnicodeError")]
    pub static mut PyExc_UnicodeError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_UnicodeEncodeError")]
    pub static mut PyExc_UnicodeEncodeError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_UnicodeDecodeError")]
    pub static mut PyExc_UnicodeDecodeError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_UnicodeTranslateError")]
    pub static mut PyExc_UnicodeTranslateError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ValueError")]
    pub static mut PyExc_ValueError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ZeroDivisionError")]
    pub static mut PyExc_ZeroDivisionError: *mut PyObject;

    #[cfg_attr(PyPy, link_name = "PyPyExc_BlockingIOError")]
    pub static mut PyExc_BlockingIOError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_BrokenPipeError")]
    pub static mut PyExc_BrokenPipeError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ChildProcessError")]
    pub static mut PyExc_ChildProcessError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ConnectionError")]
    pub static mut PyExc_ConnectionError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ConnectionAbortedError")]
    pub static mut PyExc_ConnectionAbortedError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ConnectionRefusedError")]
    pub static mut PyExc_ConnectionRefusedError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ConnectionResetError")]
    pub static mut PyExc_ConnectionResetError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_FileExistsError")]
    pub static mut PyExc_FileExistsError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_FileNotFoundError")]
    pub static mut PyExc_FileNotFoundError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_InterruptedError")]
    pub static mut PyExc_InterruptedError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_IsADirectoryError")]
    pub static mut PyExc_IsADirectoryError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_NotADirectoryError")]
    pub static mut PyExc_NotADirectoryError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_PermissionError")]
    pub static mut PyExc_PermissionError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ProcessLookupError")]
    pub static mut PyExc_ProcessLookupError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_TimeoutError")]
    pub static mut PyExc_TimeoutError: *mut PyObject;

    #[cfg_attr(PyPy, link_name = "PyPyExc_OSError")]
    pub static mut PyExc_EnvironmentError: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_OSError")]
    pub static mut PyExc_IOError: *mut PyObject;
    #[cfg(windows)]
    #[cfg_attr(PyPy, link_name = "PyPyExc_OSError")]
    pub static mut PyExc_WindowsError: *mut PyObject;

    pub static mut PyExc_RecursionErrorInst: *mut PyObject;

    /* Predefined warning categories */
    #[cfg_attr(PyPy, link_name = "PyPyExc_Warning")]
    pub static mut PyExc_Warning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_UserWarning")]
    pub static mut PyExc_UserWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_DeprecationWarning")]
    pub static mut PyExc_DeprecationWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_PendingDeprecationWarning")]
    pub static mut PyExc_PendingDeprecationWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_SyntaxWarning")]
    pub static mut PyExc_SyntaxWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_RuntimeWarning")]
    pub static mut PyExc_RuntimeWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_FutureWarning")]
    pub static mut PyExc_FutureWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ImportWarning")]
    pub static mut PyExc_ImportWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_UnicodeWarning")]
    pub static mut PyExc_UnicodeWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_BytesWarning")]
    pub static mut PyExc_BytesWarning: *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyExc_ResourceWarning")]
    pub static mut PyExc_ResourceWarning: *mut PyObject;
}

extern "C" {
    #[cfg_attr(PyPy, link_name = "PyPyErr_BadArgument")]
    pub fn PyErr_BadArgument() -> c_int;
    #[cfg_attr(PyPy, link_name = "PyPyErr_NoMemory")]
    pub fn PyErr_NoMemory() -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyErr_SetFromErrno")]
    pub fn PyErr_SetFromErrno(arg1: *mut PyObject) -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyErr_SetFromErrnoWithFilenameObject")]
    pub fn PyErr_SetFromErrnoWithFilenameObject(
        arg1: *mut PyObject,
        arg2: *mut PyObject,
    ) -> *mut PyObject;
    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;
    #[cfg_attr(PyPy, link_name = "PyPyErr_Format")]
    pub fn PyErr_Format(exception: *mut PyObject, format: *const c_char, ...) -> *mut PyObject;
    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;
    #[cfg_attr(PyPy, link_name = "PyPyErr_BadInternalCall")]
    pub fn PyErr_BadInternalCall();
    pub fn _PyErr_BadInternalCall(filename: *const c_char, lineno: c_int);
    #[cfg_attr(PyPy, link_name = "PyPyErr_NewException")]
    pub fn PyErr_NewException(
        name: *const c_char,
        base: *mut PyObject,
        dict: *mut PyObject,
    ) -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyErr_NewExceptionWithDoc")]
    pub fn PyErr_NewExceptionWithDoc(
        name: *const c_char,
        doc: *const c_char,
        base: *mut PyObject,
        dict: *mut PyObject,
    ) -> *mut PyObject;
    #[cfg_attr(PyPy, link_name = "PyPyErr_WriteUnraisable")]
    pub fn PyErr_WriteUnraisable(arg1: *mut PyObject);
    #[cfg_attr(PyPy, link_name = "PyPyErr_CheckSignals")]
    pub fn PyErr_CheckSignals() -> c_int;
    #[cfg_attr(PyPy, link_name = "PyPyErr_SetInterrupt")]
    pub fn PyErr_SetInterrupt();
    #[cfg(Py_3_10)]
    pub fn PyErr_SetInterruptEx(signum: 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;
    #[cfg(not(PyPy))]
    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;
}