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android / platform / external / python / cpython3 / 032b6467fab / . / Modules / _decimal / _decimal.c
blob: 81e548f3b48245830babd95f0f94a1b004becb7a [file] [log] [blame]
/*
* Copyright (c) 2008-2012 Stefan Krah. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef Py_BUILD_CORE_BUILTIN
# define Py_BUILD_CORE_MODULE 1
#endif
#include <Python.h>
#include "pycore_long.h" // _PyLong_IsZero()
#include "pycore_pystate.h" // _PyThreadState_GET()
#include "pycore_typeobject.h"
#include "complexobject.h"
#include <mpdecimal.h>
// Reuse config from mpdecimal.h if present.
#if defined(MPD_CONFIG_64)
#ifndef CONFIG_64
#define CONFIG_64 MPD_CONFIG_64
#endif
#elif defined(MPD_CONFIG_32)
#ifndef CONFIG_32
#define CONFIG_32 MPD_CONFIG_32
#endif
#endif
#include <ctype.h> // isascii()
#include <stdlib.h>
#include "docstrings.h"
#ifdef EXTRA_FUNCTIONALITY
#define _PY_DEC_ROUND_GUARD MPD_ROUND_GUARD
#else
#define _PY_DEC_ROUND_GUARD (MPD_ROUND_GUARD-1)
#endif
struct PyDecContextObject;
struct DecCondMap;
typedef struct {
PyTypeObject *PyDecContextManager_Type;
PyTypeObject *PyDecContext_Type;
PyTypeObject *PyDecSignalDictMixin_Type;
PyTypeObject *PyDec_Type;
PyTypeObject *PyDecSignalDict_Type;
PyTypeObject *DecimalTuple;
/* Top level Exception; inherits from ArithmeticError */
PyObject *DecimalException;
#ifndef WITH_DECIMAL_CONTEXTVAR
/* Key for thread state dictionary */
PyObject *tls_context_key;
/* Invariant: NULL or the most recently accessed thread local context */
struct PyDecContextObject *cached_context;
#else
PyObject *current_context_var;
#endif
/* Template for creating new thread contexts, calling Context() without
* arguments and initializing the module_context on first access. */
PyObject *default_context_template;
/* Basic and extended context templates */
PyObject *basic_context_template;
PyObject *extended_context_template;
PyObject *round_map[_PY_DEC_ROUND_GUARD];
/* Convert rationals for comparison */
PyObject *Rational;
/* Invariant: NULL or pointer to _pydecimal.Decimal */
PyObject *PyDecimal;
PyObject *SignalTuple;
struct DecCondMap *signal_map;
struct DecCondMap *cond_map;
/* External C-API functions */
binaryfunc _py_long_multiply;
binaryfunc _py_long_floor_divide;
ternaryfunc _py_long_power;
unaryfunc _py_float_abs;
PyCFunction _py_long_bit_length;
PyCFunction _py_float_as_integer_ratio;
} decimal_state;
static inline decimal_state *
get_module_state(PyObject *mod)
{
decimal_state *state = _PyModule_GetState(mod);
assert(state != NULL);
return state;
}
static struct PyModuleDef _decimal_module;
static inline decimal_state *
get_module_state_by_def(PyTypeObject *tp)
{
PyObject *mod = PyType_GetModuleByDef(tp, &_decimal_module);
assert(mod != NULL);
return get_module_state(mod);
}
static inline decimal_state *
find_state_left_or_right(PyObject *left, PyObject *right)
{
PyObject *mod = _PyType_GetModuleByDef2(Py_TYPE(left), Py_TYPE(right),
&_decimal_module);
assert(mod != NULL);
return get_module_state(mod);
}
#if !defined(MPD_VERSION_HEX) || MPD_VERSION_HEX < 0x02050000
#error "libmpdec version >= 2.5.0 required"
#endif
/*
* Type sizes with assertions in mpdecimal.h and pyport.h:
* sizeof(size_t) == sizeof(Py_ssize_t)
* sizeof(size_t) == sizeof(mpd_uint_t) == sizeof(mpd_ssize_t)
*/
#ifdef TEST_COVERAGE
#undef Py_LOCAL_INLINE
#define Py_LOCAL_INLINE Py_LOCAL
#endif
#define MPD_Float_operation MPD_Not_implemented
#define BOUNDS_CHECK(x, MIN, MAX) x = (x < MIN || MAX < x) ? MAX : x
#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
/* _Py_DEC_MINALLOC >= MPD_MINALLOC */
#define _Py_DEC_MINALLOC 4
typedef struct {
PyObject_HEAD
Py_hash_t hash;
mpd_t dec;
mpd_uint_t data[_Py_DEC_MINALLOC];
} PyDecObject;
typedef struct {
PyObject_HEAD
uint32_t *flags;
} PyDecSignalDictObject;
typedef struct PyDecContextObject {
PyObject_HEAD
mpd_context_t ctx;
PyObject *traps;
PyObject *flags;
int capitals;
PyThreadState *tstate;
} PyDecContextObject;
typedef struct {
PyObject_HEAD
PyObject *local;
PyObject *global;
} PyDecContextManagerObject;
#undef MPD
#undef CTX
#define PyDec_CheckExact(st, v) Py_IS_TYPE(v, (st)->PyDec_Type)
#define PyDec_Check(st, v) PyObject_TypeCheck(v, (st)->PyDec_Type)
#define PyDecSignalDict_Check(st, v) Py_IS_TYPE(v, (st)->PyDecSignalDict_Type)
#define PyDecContext_Check(st, v) PyObject_TypeCheck(v, (st)->PyDecContext_Type)
#define MPD(v) (&((PyDecObject *)v)->dec)
#define SdFlagAddr(v) (((PyDecSignalDictObject *)v)->flags)
#define SdFlags(v) (*((PyDecSignalDictObject *)v)->flags)
#define CTX(v) (&((PyDecContextObject *)v)->ctx)
#define CtxCaps(v) (((PyDecContextObject *)v)->capitals)
Py_LOCAL_INLINE(PyObject *)
incr_true(void)
{
return Py_NewRef(Py_True);
}
Py_LOCAL_INLINE(PyObject *)
incr_false(void)
{
return Py_NewRef(Py_False);
}
/* Error codes for functions that return signals or conditions */
#define DEC_INVALID_SIGNALS (MPD_Max_status+1U)
#define DEC_ERR_OCCURRED (DEC_INVALID_SIGNALS<<1)
#define DEC_ERRORS (DEC_INVALID_SIGNALS|DEC_ERR_OCCURRED)
typedef struct DecCondMap {
const char *name; /* condition or signal name */
const char *fqname; /* fully qualified name */
uint32_t flag; /* libmpdec flag */
PyObject *ex; /* corresponding exception */
} DecCondMap;
/* Exceptions that correspond to IEEE signals */
#define SUBNORMAL 5
#define INEXACT 6
#define ROUNDED 7
#define SIGNAL_MAP_LEN 9
static DecCondMap signal_map_template[] = {
{"InvalidOperation", "decimal.InvalidOperation", MPD_IEEE_Invalid_operation, NULL},
{"FloatOperation", "decimal.FloatOperation", MPD_Float_operation, NULL},
{"DivisionByZero", "decimal.DivisionByZero", MPD_Division_by_zero, NULL},
{"Overflow", "decimal.Overflow", MPD_Overflow, NULL},
{"Underflow", "decimal.Underflow", MPD_Underflow, NULL},
{"Subnormal", "decimal.Subnormal", MPD_Subnormal, NULL},
{"Inexact", "decimal.Inexact", MPD_Inexact, NULL},
{"Rounded", "decimal.Rounded", MPD_Rounded, NULL},
{"Clamped", "decimal.Clamped", MPD_Clamped, NULL},
{NULL}
};
/* Exceptions that inherit from InvalidOperation */
static DecCondMap cond_map_template[] = {
{"InvalidOperation", "decimal.InvalidOperation", MPD_Invalid_operation, NULL},
{"ConversionSyntax", "decimal.ConversionSyntax", MPD_Conversion_syntax, NULL},
{"DivisionImpossible", "decimal.DivisionImpossible", MPD_Division_impossible, NULL},
{"DivisionUndefined", "decimal.DivisionUndefined", MPD_Division_undefined, NULL},
{"InvalidContext", "decimal.InvalidContext", MPD_Invalid_context, NULL},
#ifdef EXTRA_FUNCTIONALITY
{"MallocError", "decimal.MallocError", MPD_Malloc_error, NULL},
#endif
{NULL}
};
/* Return a duplicate of DecCondMap template */
static inline DecCondMap *
dec_cond_map_init(DecCondMap *template, Py_ssize_t size)
{
DecCondMap *cm;
cm = PyMem_Malloc(size);
if (cm == NULL) {
PyErr_NoMemory();
return NULL;
}
memcpy(cm, template, size);
return cm;
}
static const char *dec_signal_string[MPD_NUM_FLAGS] = {
"Clamped",
"InvalidOperation",
"DivisionByZero",
"InvalidOperation",
"InvalidOperation",
"InvalidOperation",
"Inexact",
"InvalidOperation",
"InvalidOperation",
"InvalidOperation",
"FloatOperation",
"Overflow",
"Rounded",
"Subnormal",
"Underflow",
};
static const char *invalid_rounding_err =
"valid values for rounding are:\n\
[ROUND_CEILING, ROUND_FLOOR, ROUND_UP, ROUND_DOWN,\n\
ROUND_HALF_UP, ROUND_HALF_DOWN, ROUND_HALF_EVEN,\n\
ROUND_05UP]";
static const char *invalid_signals_err =
"valid values for signals are:\n\
[InvalidOperation, FloatOperation, DivisionByZero,\n\
Overflow, Underflow, Subnormal, Inexact, Rounded,\n\
Clamped]";
#ifdef EXTRA_FUNCTIONALITY
static const char *invalid_flags_err =
"valid values for _flags or _traps are:\n\
signals:\n\
[DecIEEEInvalidOperation, DecFloatOperation, DecDivisionByZero,\n\
DecOverflow, DecUnderflow, DecSubnormal, DecInexact, DecRounded,\n\
DecClamped]\n\
conditions which trigger DecIEEEInvalidOperation:\n\
[DecInvalidOperation, DecConversionSyntax, DecDivisionImpossible,\n\
DecDivisionUndefined, DecFpuError, DecInvalidContext, DecMallocError]";
#endif
static int
value_error_int(const char *mesg)
{
PyErr_SetString(PyExc_ValueError, mesg);
return -1;
}
static PyObject *
value_error_ptr(const char *mesg)
{
PyErr_SetString(PyExc_ValueError, mesg);
return NULL;
}
static int
type_error_int(const char *mesg)
{
PyErr_SetString(PyExc_TypeError, mesg);
return -1;
}
static int
runtime_error_int(const char *mesg)
{
PyErr_SetString(PyExc_RuntimeError, mesg);
return -1;
}
#define INTERNAL_ERROR_INT(funcname) \
return runtime_error_int("internal error in " funcname)
static PyObject *
runtime_error_ptr(const char *mesg)
{
PyErr_SetString(PyExc_RuntimeError, mesg);
return NULL;
}
#define INTERNAL_ERROR_PTR(funcname) \
return runtime_error_ptr("internal error in " funcname)
static void
dec_traphandler(mpd_context_t *ctx UNUSED) /* GCOV_NOT_REACHED */
{ /* GCOV_NOT_REACHED */
return; /* GCOV_NOT_REACHED */
}
static PyObject *
flags_as_exception(decimal_state *state, uint32_t flags)
{
DecCondMap *cm;
for (cm = state->signal_map; cm->name != NULL; cm++) {
if (flags&cm->flag) {
return cm->ex;
}
}
INTERNAL_ERROR_PTR("flags_as_exception"); /* GCOV_NOT_REACHED */
}
Py_LOCAL_INLINE(uint32_t)
exception_as_flag(decimal_state *state, PyObject *ex)
{
DecCondMap *cm;
for (cm = state->signal_map; cm->name != NULL; cm++) {
if (cm->ex == ex) {
return cm->flag;
}
}
PyErr_SetString(PyExc_KeyError, invalid_signals_err);
return DEC_INVALID_SIGNALS;
}
static PyObject *
flags_as_list(decimal_state *state, uint32_t flags)
{
PyObject *list;
DecCondMap *cm;
list = PyList_New(0);
if (list == NULL) {
return NULL;
}
for (cm = state->cond_map; cm->name != NULL; cm++) {
if (flags&cm->flag) {
if (PyList_Append(list, cm->ex) < 0) {
goto error;
}
}
}
for (cm = state->signal_map+1; cm->name != NULL; cm++) {
if (flags&cm->flag) {
if (PyList_Append(list, cm->ex) < 0) {
goto error;
}
}
}
return list;
error:
Py_DECREF(list);
return NULL;
}
static PyObject *
signals_as_list(decimal_state *state, uint32_t flags)
{
PyObject *list;
DecCondMap *cm;
list = PyList_New(0);
if (list == NULL) {
return NULL;
}
for (cm = state->signal_map; cm->name != NULL; cm++) {
if (flags&cm->flag) {
if (PyList_Append(list, cm->ex) < 0) {
Py_DECREF(list);
return NULL;
}
}
}
return list;
}
static uint32_t
list_as_flags(decimal_state *state, PyObject *list)
{
PyObject *item;
uint32_t flags, x;
Py_ssize_t n, j;
assert(PyList_Check(list));
n = PyList_Size(list);
flags = 0;
for (j = 0; j < n; j++) {
item = PyList_GetItem(list, j);
x = exception_as_flag(state, item);
if (x & DEC_ERRORS) {
return x;
}
flags |= x;
}
return flags;
}
static PyObject *
flags_as_dict(decimal_state *state, uint32_t flags)
{
DecCondMap *cm;
PyObject *dict;
dict = PyDict_New();
if (dict == NULL) {
return NULL;
}
for (cm = state->signal_map; cm->name != NULL; cm++) {
PyObject *b = flags&cm->flag ? Py_True : Py_False;
if (PyDict_SetItem(dict, cm->ex, b) < 0) {
Py_DECREF(dict);
return NULL;
}
}
return dict;
}
static uint32_t
dict_as_flags(decimal_state *state, PyObject *val)
{
PyObject *b;
DecCondMap *cm;
uint32_t flags = 0;
int x;
if (!PyDict_Check(val)) {
PyErr_SetString(PyExc_TypeError,
"argument must be a signal dict");
return DEC_INVALID_SIGNALS;
}
if (PyDict_Size(val) != SIGNAL_MAP_LEN) {
PyErr_SetString(PyExc_KeyError,
"invalid signal dict");
return DEC_INVALID_SIGNALS;
}
for (cm = state->signal_map; cm->name != NULL; cm++) {
b = PyDict_GetItemWithError(val, cm->ex);
if (b == NULL) {
if (PyErr_Occurred()) {
return DEC_ERR_OCCURRED;
}
PyErr_SetString(PyExc_KeyError,
"invalid signal dict");
return DEC_INVALID_SIGNALS;
}
x = PyObject_IsTrue(b);
if (x < 0) {
return DEC_ERR_OCCURRED;
}
if (x == 1) {
flags |= cm->flag;
}
}
return flags;
}
#ifdef EXTRA_FUNCTIONALITY
static uint32_t
long_as_flags(PyObject *v)
{
long x;
x = PyLong_AsLong(v);
if (x == -1 && PyErr_Occurred()) {
return DEC_ERR_OCCURRED;
}
if (x < 0 || x > (long)MPD_Max_status) {
PyErr_SetString(PyExc_TypeError, invalid_flags_err);
return DEC_INVALID_SIGNALS;
}
return x;
}
#endif
static int
dec_addstatus(PyObject *context, uint32_t status)
{
mpd_context_t *ctx = CTX(context);
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
ctx->status |= status;
if (status & (ctx->traps|MPD_Malloc_error)) {
PyObject *ex, *siglist;
if (status & MPD_Malloc_error) {
PyErr_NoMemory();
return 1;
}
ex = flags_as_exception(state, ctx->traps&status);
if (ex == NULL) {
return 1; /* GCOV_NOT_REACHED */
}
siglist = flags_as_list(state, ctx->traps&status);
if (siglist == NULL) {
return 1;
}
PyErr_SetObject(ex, siglist);
Py_DECREF(siglist);
return 1;
}
return 0;
}
static int
getround(decimal_state *state, PyObject *v)
{
int i;
if (PyUnicode_Check(v)) {
for (i = 0; i < _PY_DEC_ROUND_GUARD; i++) {
if (v == state->round_map[i]) {
return i;
}
}
for (i = 0; i < _PY_DEC_ROUND_GUARD; i++) {
if (PyUnicode_Compare(v, state->round_map[i]) == 0) {
return i;
}
}
}
return type_error_int(invalid_rounding_err);
}
/******************************************************************************/
/* SignalDict Object */
/******************************************************************************/
/* The SignalDict is a MutableMapping that provides access to the
mpd_context_t flags, which reside in the context object. When a
new context is created, context.traps and context.flags are
initialized to new SignalDicts. Once a SignalDict is tied to
a context, it cannot be deleted. */
static const char *INVALID_SIGNALDICT_ERROR_MSG = "invalid signal dict";
static int
signaldict_init(PyObject *self, PyObject *args UNUSED, PyObject *kwds UNUSED)
{
SdFlagAddr(self) = NULL;
return 0;
}
static Py_ssize_t
signaldict_len(PyObject *self)
{
if (SdFlagAddr(self) == NULL) {
return value_error_int(INVALID_SIGNALDICT_ERROR_MSG);
}
return SIGNAL_MAP_LEN;
}
static PyObject *
signaldict_iter(PyObject *self)
{
if (SdFlagAddr(self) == NULL) {
return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
return PyTuple_Type.tp_iter(state->SignalTuple);
}
static PyObject *
signaldict_getitem(PyObject *self, PyObject *key)
{
uint32_t flag;
if (SdFlagAddr(self) == NULL) {
return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
flag = exception_as_flag(state, key);
if (flag & DEC_ERRORS) {
return NULL;
}
return SdFlags(self)&flag ? incr_true() : incr_false();
}
static int
signaldict_setitem(PyObject *self, PyObject *key, PyObject *value)
{
uint32_t flag;
int x;
if (SdFlagAddr(self) == NULL) {
return value_error_int(INVALID_SIGNALDICT_ERROR_MSG);
}
if (value == NULL) {
return value_error_int("signal keys cannot be deleted");
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
flag = exception_as_flag(state, key);
if (flag & DEC_ERRORS) {
return -1;
}
x = PyObject_IsTrue(value);
if (x < 0) {
return -1;
}
if (x == 1) {
SdFlags(self) |= flag;
}
else {
SdFlags(self) &= ~flag;
}
return 0;
}
static int
signaldict_traverse(PyObject *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
return 0;
}
static void
signaldict_dealloc(PyObject *self)
{
PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
tp->tp_free(self);
Py_DECREF(tp);
}
static PyObject *
signaldict_repr(PyObject *self)
{
DecCondMap *cm;
const char *n[SIGNAL_MAP_LEN]; /* name */
const char *b[SIGNAL_MAP_LEN]; /* bool */
int i;
if (SdFlagAddr(self) == NULL) {
return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
}
assert(SIGNAL_MAP_LEN == 9);
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
for (cm=state->signal_map, i=0; cm->name != NULL; cm++, i++) {
n[i] = cm->fqname;
b[i] = SdFlags(self)&cm->flag ? "True" : "False";
}
return PyUnicode_FromFormat(
"{<class '%s'>:%s, <class '%s'>:%s, <class '%s'>:%s, "
"<class '%s'>:%s, <class '%s'>:%s, <class '%s'>:%s, "
"<class '%s'>:%s, <class '%s'>:%s, <class '%s'>:%s}",
n[0], b[0], n[1], b[1], n[2], b[2],
n[3], b[3], n[4], b[4], n[5], b[5],
n[6], b[6], n[7], b[7], n[8], b[8]);
}
static PyObject *
signaldict_richcompare(PyObject *v, PyObject *w, int op)
{
PyObject *res = Py_NotImplemented;
decimal_state *state = find_state_left_or_right(v, w);
assert(PyDecSignalDict_Check(state, v));
if ((SdFlagAddr(v) == NULL) || (SdFlagAddr(w) == NULL)) {
return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
}
if (op == Py_EQ || op == Py_NE) {
if (PyDecSignalDict_Check(state, w)) {
res = (SdFlags(v)==SdFlags(w)) ^ (op==Py_NE) ? Py_True : Py_False;
}
else if (PyDict_Check(w)) {
uint32_t flags = dict_as_flags(state, w);
if (flags & DEC_ERRORS) {
if (flags & DEC_INVALID_SIGNALS) {
/* non-comparable: Py_NotImplemented */
PyErr_Clear();
}
else {
return NULL;
}
}
else {
res = (SdFlags(v)==flags) ^ (op==Py_NE) ? Py_True : Py_False;
}
}
}
return Py_NewRef(res);
}
static PyObject *
signaldict_copy(PyObject *self, PyObject *args UNUSED)
{
if (SdFlagAddr(self) == NULL) {
return value_error_ptr(INVALID_SIGNALDICT_ERROR_MSG);
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
return flags_as_dict(state, SdFlags(self));
}
static PyMethodDef signaldict_methods[] = {
{ "copy", (PyCFunction)signaldict_copy, METH_NOARGS, NULL},
{NULL, NULL}
};
static PyType_Slot signaldict_slots[] = {
{Py_tp_dealloc, signaldict_dealloc},
{Py_tp_traverse, signaldict_traverse},
{Py_tp_repr, signaldict_repr},
{Py_tp_hash, PyObject_HashNotImplemented},
{Py_tp_getattro, PyObject_GenericGetAttr},
{Py_tp_richcompare, signaldict_richcompare},
{Py_tp_iter, signaldict_iter},
{Py_tp_methods, signaldict_methods},
{Py_tp_init, signaldict_init},
// Mapping protocol
{Py_mp_length, signaldict_len},
{Py_mp_subscript, signaldict_getitem},
{Py_mp_ass_subscript, signaldict_setitem},
{0, NULL},
};
static PyType_Spec signaldict_spec = {
.name = "decimal.SignalDictMixin",
.basicsize = sizeof(PyDecSignalDictObject),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE),
.slots = signaldict_slots,
};
/******************************************************************************/
/* Context Object, Part 1 */
/******************************************************************************/
#define Dec_CONTEXT_GET_SSIZE(mem) \
static PyObject * \
context_get##mem(PyObject *self, void *closure UNUSED) \
{ \
return PyLong_FromSsize_t(mpd_get##mem(CTX(self))); \
}
#define Dec_CONTEXT_GET_ULONG(mem) \
static PyObject * \
context_get##mem(PyObject *self, void *closure UNUSED) \
{ \
return PyLong_FromUnsignedLong(mpd_get##mem(CTX(self))); \
}
Dec_CONTEXT_GET_SSIZE(prec)
Dec_CONTEXT_GET_SSIZE(emax)
Dec_CONTEXT_GET_SSIZE(emin)
Dec_CONTEXT_GET_SSIZE(clamp)
#ifdef EXTRA_FUNCTIONALITY
Dec_CONTEXT_GET_ULONG(traps)
Dec_CONTEXT_GET_ULONG(status)
#endif
static PyObject *
context_getround(PyObject *self, void *closure UNUSED)
{
int i = mpd_getround(CTX(self));
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
return Py_NewRef(state->round_map[i]);
}
static PyObject *
context_getcapitals(PyObject *self, void *closure UNUSED)
{
return PyLong_FromLong(CtxCaps(self));
}
#ifdef EXTRA_FUNCTIONALITY
static PyObject *
context_getallcr(PyObject *self, void *closure UNUSED)
{
return PyLong_FromLong(mpd_getcr(CTX(self)));
}
#endif
static PyObject *
context_getetiny(PyObject *self, PyObject *dummy UNUSED)
{
return PyLong_FromSsize_t(mpd_etiny(CTX(self)));
}
static PyObject *
context_getetop(PyObject *self, PyObject *dummy UNUSED)
{
return PyLong_FromSsize_t(mpd_etop(CTX(self)));
}
static int
context_setprec(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsetprec(ctx, x)) {
return value_error_int(
"valid range for prec is [1, MAX_PREC]");
}
return 0;
}
static int
context_setemin(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsetemin(ctx, x)) {
return value_error_int(
"valid range for Emin is [MIN_EMIN, 0]");
}
return 0;
}
static int
context_setemax(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsetemax(ctx, x)) {
return value_error_int(
"valid range for Emax is [0, MAX_EMAX]");
}
return 0;
}
#ifdef CONFIG_32
static PyObject *
context_unsafe_setprec(PyObject *self, PyObject *value)
{
mpd_context_t *ctx = CTX(self);
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return NULL;
}
if (x < 1 || x > 1070000000L) {
return value_error_ptr(
"valid range for unsafe prec is [1, 1070000000]");
}
ctx->prec = x;
Py_RETURN_NONE;
}
static PyObject *
context_unsafe_setemin(PyObject *self, PyObject *value)
{
mpd_context_t *ctx = CTX(self);
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return NULL;
}
if (x < -1070000000L || x > 0) {
return value_error_ptr(
"valid range for unsafe emin is [-1070000000, 0]");
}
ctx->emin = x;
Py_RETURN_NONE;
}
static PyObject *
context_unsafe_setemax(PyObject *self, PyObject *value)
{
mpd_context_t *ctx = CTX(self);
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return NULL;
}
if (x < 0 || x > 1070000000L) {
return value_error_ptr(
"valid range for unsafe emax is [0, 1070000000]");
}
ctx->emax = x;
Py_RETURN_NONE;
}
#endif
static int
context_setround(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
int x;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
x = getround(state, value);
if (x == -1) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsetround(ctx, x)) {
INTERNAL_ERROR_INT("context_setround"); /* GCOV_NOT_REACHED */
}
return 0;
}
static int
context_setcapitals(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return -1;
}
if (x != 0 && x != 1) {
return value_error_int(
"valid values for capitals are 0 or 1");
}
CtxCaps(self) = (int)x;
return 0;
}
#ifdef EXTRA_FUNCTIONALITY
static int
context_settraps(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
uint32_t flags;
flags = long_as_flags(value);
if (flags & DEC_ERRORS) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsettraps(ctx, flags)) {
INTERNAL_ERROR_INT("context_settraps");
}
return 0;
}
#endif
static int
context_settraps_list(PyObject *self, PyObject *value)
{
mpd_context_t *ctx;
uint32_t flags;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
flags = list_as_flags(state, value);
if (flags & DEC_ERRORS) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsettraps(ctx, flags)) {
INTERNAL_ERROR_INT("context_settraps_list");
}
return 0;
}
static int
context_settraps_dict(PyObject *self, PyObject *value)
{
mpd_context_t *ctx;
uint32_t flags;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
if (PyDecSignalDict_Check(state, value)) {
flags = SdFlags(value);
}
else {
flags = dict_as_flags(state, value);
if (flags & DEC_ERRORS) {
return -1;
}
}
ctx = CTX(self);
if (!mpd_qsettraps(ctx, flags)) {
INTERNAL_ERROR_INT("context_settraps_dict");
}
return 0;
}
#ifdef EXTRA_FUNCTIONALITY
static int
context_setstatus(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
uint32_t flags;
flags = long_as_flags(value);
if (flags & DEC_ERRORS) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsetstatus(ctx, flags)) {
INTERNAL_ERROR_INT("context_setstatus");
}
return 0;
}
#endif
static int
context_setstatus_list(PyObject *self, PyObject *value)
{
mpd_context_t *ctx;
uint32_t flags;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
flags = list_as_flags(state, value);
if (flags & DEC_ERRORS) {
return -1;
}
ctx = CTX(self);
if (!mpd_qsetstatus(ctx, flags)) {
INTERNAL_ERROR_INT("context_setstatus_list");
}
return 0;
}
static int
context_setstatus_dict(PyObject *self, PyObject *value)
{
mpd_context_t *ctx;
uint32_t flags;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
if (PyDecSignalDict_Check(state, value)) {
flags = SdFlags(value);
}
else {
flags = dict_as_flags(state, value);
if (flags & DEC_ERRORS) {
return -1;
}
}
ctx = CTX(self);
if (!mpd_qsetstatus(ctx, flags)) {
INTERNAL_ERROR_INT("context_setstatus_dict");
}
return 0;
}
static int
context_setclamp(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return -1;
}
BOUNDS_CHECK(x, INT_MIN, INT_MAX);
ctx = CTX(self);
if (!mpd_qsetclamp(ctx, (int)x)) {
return value_error_int("valid values for clamp are 0 or 1");
}
return 0;
}
#ifdef EXTRA_FUNCTIONALITY
static int
context_setallcr(PyObject *self, PyObject *value, void *closure UNUSED)
{
mpd_context_t *ctx;
mpd_ssize_t x;
x = PyLong_AsSsize_t(value);
if (x == -1 && PyErr_Occurred()) {
return -1;
}
BOUNDS_CHECK(x, INT_MIN, INT_MAX);
ctx = CTX(self);
if (!mpd_qsetcr(ctx, (int)x)) {
return value_error_int("valid values for _allcr are 0 or 1");
}
return 0;
}
#endif
static PyObject *
context_getattr(PyObject *self, PyObject *name)
{
PyObject *retval;
if (PyUnicode_Check(name)) {
if (PyUnicode_CompareWithASCIIString(name, "traps") == 0) {
retval = ((PyDecContextObject *)self)->traps;
return Py_NewRef(retval);
}
if (PyUnicode_CompareWithASCIIString(name, "flags") == 0) {
retval = ((PyDecContextObject *)self)->flags;
return Py_NewRef(retval);
}
}
return PyObject_GenericGetAttr(self, name);
}
static int
context_setattr(PyObject *self, PyObject *name, PyObject *value)
{
if (value == NULL) {
PyErr_SetString(PyExc_AttributeError,
"context attributes cannot be deleted");
return -1;
}
if (PyUnicode_Check(name)) {
if (PyUnicode_CompareWithASCIIString(name, "traps") == 0) {
return context_settraps_dict(self, value);
}
if (PyUnicode_CompareWithASCIIString(name, "flags") == 0) {
return context_setstatus_dict(self, value);
}
}
return PyObject_GenericSetAttr(self, name, value);
}
static int
context_setattrs(PyObject *self, PyObject *prec, PyObject *rounding,
PyObject *emin, PyObject *emax, PyObject *capitals,
PyObject *clamp, PyObject *status, PyObject *traps) {
int ret;
if (prec != Py_None && context_setprec(self, prec, NULL) < 0) {
return -1;
}
if (rounding != Py_None && context_setround(self, rounding, NULL) < 0) {
return -1;
}
if (emin != Py_None && context_setemin(self, emin, NULL) < 0) {
return -1;
}
if (emax != Py_None && context_setemax(self, emax, NULL) < 0) {
return -1;
}
if (capitals != Py_None && context_setcapitals(self, capitals, NULL) < 0) {
return -1;
}
if (clamp != Py_None && context_setclamp(self, clamp, NULL) < 0) {
return -1;
}
if (traps != Py_None) {
if (PyList_Check(traps)) {
ret = context_settraps_list(self, traps);
}
#ifdef EXTRA_FUNCTIONALITY
else if (PyLong_Check(traps)) {
ret = context_settraps(self, traps, NULL);
}
#endif
else {
ret = context_settraps_dict(self, traps);
}
if (ret < 0) {
return ret;
}
}
if (status != Py_None) {
if (PyList_Check(status)) {
ret = context_setstatus_list(self, status);
}
#ifdef EXTRA_FUNCTIONALITY
else if (PyLong_Check(status)) {
ret = context_setstatus(self, status, NULL);
}
#endif
else {
ret = context_setstatus_dict(self, status);
}
if (ret < 0) {
return ret;
}
}
return 0;
}
static PyObject *
context_clear_traps(PyObject *self, PyObject *dummy UNUSED)
{
CTX(self)->traps = 0;
Py_RETURN_NONE;
}
static PyObject *
context_clear_flags(PyObject *self, PyObject *dummy UNUSED)
{
CTX(self)->status = 0;
Py_RETURN_NONE;
}
#define DEC_DFLT_EMAX 999999
#define DEC_DFLT_EMIN -999999
static mpd_context_t dflt_ctx = {
28, DEC_DFLT_EMAX, DEC_DFLT_EMIN,
MPD_IEEE_Invalid_operation|MPD_Division_by_zero|MPD_Overflow,
0, 0, MPD_ROUND_HALF_EVEN, 0, 1
};
static PyObject *
context_new(PyTypeObject *type, PyObject *args UNUSED, PyObject *kwds UNUSED)
{
PyDecContextObject *self = NULL;
mpd_context_t *ctx;
decimal_state *state = get_module_state_by_def(type);
if (type == state->PyDecContext_Type) {
self = PyObject_GC_New(PyDecContextObject, state->PyDecContext_Type);
}
else {
self = (PyDecContextObject *)type->tp_alloc(type, 0);
}
if (self == NULL) {
return NULL;
}
self->traps = PyObject_CallObject((PyObject *)state->PyDecSignalDict_Type, NULL);
if (self->traps == NULL) {
self->flags = NULL;
Py_DECREF(self);
return NULL;
}
self->flags = PyObject_CallObject((PyObject *)state->PyDecSignalDict_Type, NULL);
if (self->flags == NULL) {
Py_DECREF(self);
return NULL;
}
ctx = CTX(self);
if (state->default_context_template) {
*ctx = *CTX(state->default_context_template);
}
else {
*ctx = dflt_ctx;
}
SdFlagAddr(self->traps) = &ctx->traps;
SdFlagAddr(self->flags) = &ctx->status;
CtxCaps(self) = 1;
self->tstate = NULL;
return (PyObject *)self;
}
static int
context_traverse(PyDecContextObject *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
Py_VISIT(self->traps);
Py_VISIT(self->flags);
return 0;
}
static int
context_clear(PyDecContextObject *self)
{
Py_CLEAR(self->traps);
Py_CLEAR(self->flags);
return 0;
}
static void
context_dealloc(PyDecContextObject *self)
{
PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
#ifndef WITH_DECIMAL_CONTEXTVAR
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
if (self == state->cached_context) {
state->cached_context = NULL;
}
#endif
(void)context_clear(self);
tp->tp_free(self);
Py_DECREF(tp);
}
static int
context_init(PyObject *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {
"prec", "rounding", "Emin", "Emax", "capitals", "clamp",
"flags", "traps", NULL
};
PyObject *prec = Py_None;
PyObject *rounding = Py_None;
PyObject *emin = Py_None;
PyObject *emax = Py_None;
PyObject *capitals = Py_None;
PyObject *clamp = Py_None;
PyObject *status = Py_None;
PyObject *traps = Py_None;
assert(PyTuple_Check(args));
if (!PyArg_ParseTupleAndKeywords(
args, kwds,
"|OOOOOOOO", kwlist,
&prec, &rounding, &emin, &emax, &capitals, &clamp, &status, &traps
)) {
return -1;
}
return context_setattrs(
self, prec, rounding,
emin, emax, capitals,
clamp, status, traps
);
}
static PyObject *
context_repr(PyDecContextObject *self)
{
mpd_context_t *ctx;
char flags[MPD_MAX_SIGNAL_LIST];
char traps[MPD_MAX_SIGNAL_LIST];
int n, mem;
#ifdef Py_DEBUG
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
assert(PyDecContext_Check(state, self));
#endif
ctx = CTX(self);
mem = MPD_MAX_SIGNAL_LIST;
n = mpd_lsnprint_signals(flags, mem, ctx->status, dec_signal_string);
if (n < 0 || n >= mem) {
INTERNAL_ERROR_PTR("context_repr");
}
n = mpd_lsnprint_signals(traps, mem, ctx->traps, dec_signal_string);
if (n < 0 || n >= mem) {
INTERNAL_ERROR_PTR("context_repr");
}
return PyUnicode_FromFormat(
"Context(prec=%zd, rounding=%s, Emin=%zd, Emax=%zd, "
"capitals=%d, clamp=%d, flags=%s, traps=%s)",
ctx->prec, mpd_round_string[ctx->round], ctx->emin, ctx->emax,
self->capitals, ctx->clamp, flags, traps);
}
static void
init_basic_context(PyObject *v)
{
mpd_context_t ctx = dflt_ctx;
ctx.prec = 9;
ctx.traps |= (MPD_Underflow|MPD_Clamped);
ctx.round = MPD_ROUND_HALF_UP;
*CTX(v) = ctx;
CtxCaps(v) = 1;
}
static void
init_extended_context(PyObject *v)
{
mpd_context_t ctx = dflt_ctx;
ctx.prec = 9;
ctx.traps = 0;
*CTX(v) = ctx;
CtxCaps(v) = 1;
}
#ifdef EXTRA_FUNCTIONALITY
/* Factory function for creating IEEE interchange format contexts */
static PyObject *
ieee_context(PyObject *module, PyObject *v)
{
PyObject *context;
mpd_ssize_t bits;
mpd_context_t ctx;
bits = PyLong_AsSsize_t(v);
if (bits == -1 && PyErr_Occurred()) {
return NULL;
}
if (bits <= 0 || bits > INT_MAX) {
goto error;
}
if (mpd_ieee_context(&ctx, (int)bits) < 0) {
goto error;
}
decimal_state *state = get_module_state(module);
context = PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL);
if (context == NULL) {
return NULL;
}
*CTX(context) = ctx;
return context;
error:
PyErr_Format(PyExc_ValueError,
"argument must be a multiple of 32, with a maximum of %d",
MPD_IEEE_CONTEXT_MAX_BITS);
return NULL;
}
#endif
static PyObject *
context_copy(PyObject *self, PyObject *args UNUSED)
{
PyObject *copy;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
copy = PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL);
if (copy == NULL) {
return NULL;
}
*CTX(copy) = *CTX(self);
CTX(copy)->newtrap = 0;
CtxCaps(copy) = CtxCaps(self);
return copy;
}
static PyObject *
context_reduce(PyObject *self, PyObject *args UNUSED)
{
PyObject *flags;
PyObject *traps;
PyObject *ret;
mpd_context_t *ctx;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
ctx = CTX(self);
flags = signals_as_list(state, ctx->status);
if (flags == NULL) {
return NULL;
}
traps = signals_as_list(state, ctx->traps);
if (traps == NULL) {
Py_DECREF(flags);
return NULL;
}
ret = Py_BuildValue(
"O(nsnniiOO)",
Py_TYPE(self),
ctx->prec, mpd_round_string[ctx->round], ctx->emin, ctx->emax,
CtxCaps(self), ctx->clamp, flags, traps
);
Py_DECREF(flags);
Py_DECREF(traps);
return ret;
}
static PyGetSetDef context_getsets [] =
{
{ "prec", (getter)context_getprec, (setter)context_setprec, NULL, NULL},
{ "Emax", (getter)context_getemax, (setter)context_setemax, NULL, NULL},
{ "Emin", (getter)context_getemin, (setter)context_setemin, NULL, NULL},
{ "rounding", (getter)context_getround, (setter)context_setround, NULL, NULL},
{ "capitals", (getter)context_getcapitals, (setter)context_setcapitals, NULL, NULL},
{ "clamp", (getter)context_getclamp, (setter)context_setclamp, NULL, NULL},
#ifdef EXTRA_FUNCTIONALITY
{ "_allcr", (getter)context_getallcr, (setter)context_setallcr, NULL, NULL},
{ "_traps", (getter)context_gettraps, (setter)context_settraps, NULL, NULL},
{ "_flags", (getter)context_getstatus, (setter)context_setstatus, NULL, NULL},
#endif
{NULL}
};
#define CONTEXT_CHECK(state, obj) \
if (!PyDecContext_Check(state, obj)) { \
PyErr_SetString(PyExc_TypeError, \
"argument must be a context"); \
return NULL; \
}
#define CONTEXT_CHECK_VA(state, obj) \
if (obj == Py_None) { \
CURRENT_CONTEXT(state, obj); \
} \
else if (!PyDecContext_Check(state, obj)) { \
PyErr_SetString(PyExc_TypeError, \
"optional argument must be a context"); \
return NULL; \
}
/******************************************************************************/
/* Global, thread local and temporary contexts */
/******************************************************************************/
/*
* Thread local storage currently has a speed penalty of about 4%.
* All functions that map Python's arithmetic operators to mpdecimal
* functions have to look up the current context for each and every
* operation.
*/
#ifndef WITH_DECIMAL_CONTEXTVAR
/* Get the context from the thread state dictionary. */
static PyObject *
current_context_from_dict(decimal_state *modstate)
{
PyThreadState *tstate = _PyThreadState_GET();
#ifdef Py_DEBUG
// The caller must hold the GIL
_Py_EnsureTstateNotNULL(tstate);
#endif
PyObject *dict = _PyThreadState_GetDict(tstate);
if (dict == NULL) {
PyErr_SetString(PyExc_RuntimeError,
"cannot get thread state");
return NULL;
}
PyObject *tl_context;
tl_context = PyDict_GetItemWithError(dict, modstate->tls_context_key);
if (tl_context != NULL) {
/* We already have a thread local context. */
CONTEXT_CHECK(modstate, tl_context);
}
else {
if (PyErr_Occurred()) {
return NULL;
}
/* Set up a new thread local context. */
tl_context = context_copy(modstate->default_context_template, NULL);
if (tl_context == NULL) {
return NULL;
}
CTX(tl_context)->status = 0;
if (PyDict_SetItem(dict, modstate->tls_context_key, tl_context) < 0) {
Py_DECREF(tl_context);
return NULL;
}
Py_DECREF(tl_context);
}
/* Cache the context of the current thread, assuming that it
* will be accessed several times before a thread switch. */
modstate->cached_context = (PyDecContextObject *)tl_context;
modstate->cached_context->tstate = tstate;
/* Borrowed reference with refcount==1 */
return tl_context;
}
/* Return borrowed reference to thread local context. */
static PyObject *
current_context(decimal_state *modstate)
{
PyThreadState *tstate = _PyThreadState_GET();
if (modstate->cached_context && modstate->cached_context->tstate == tstate) {
return (PyObject *)(modstate->cached_context);
}
return current_context_from_dict(modstate);
}
/* ctxobj := borrowed reference to the current context */
#define CURRENT_CONTEXT(state, ctxobj) \
ctxobj = current_context(state); \
if (ctxobj == NULL) { \
return NULL; \
}
/* Return a new reference to the current context */
static PyObject *
PyDec_GetCurrentContext(PyObject *self, PyObject *args UNUSED)
{
PyObject *context;
decimal_state *state = get_module_state(self);
CURRENT_CONTEXT(state, context);
return Py_NewRef(context);
}
/* Set the thread local context to a new context, decrement old reference */
static PyObject *
PyDec_SetCurrentContext(PyObject *self, PyObject *v)
{
PyObject *dict;
decimal_state *state = get_module_state(self);
CONTEXT_CHECK(state, v);
dict = PyThreadState_GetDict();
if (dict == NULL) {
PyErr_SetString(PyExc_RuntimeError,
"cannot get thread state");
return NULL;
}
/* If the new context is one of the templates, make a copy.
* This is the current behavior of decimal.py. */
if (v == state->default_context_template ||
v == state->basic_context_template ||
v == state->extended_context_template) {
v = context_copy(v, NULL);
if (v == NULL) {
return NULL;
}
CTX(v)->status = 0;
}
else {
Py_INCREF(v);
}
state->cached_context = NULL;
if (PyDict_SetItem(dict, state->tls_context_key, v) < 0) {
Py_DECREF(v);
return NULL;
}
Py_DECREF(v);
Py_RETURN_NONE;
}
#else
static PyObject *
init_current_context(decimal_state *state)
{
PyObject *tl_context = context_copy(state->default_context_template, NULL);
if (tl_context == NULL) {
return NULL;
}
CTX(tl_context)->status = 0;
PyObject *tok = PyContextVar_Set(state->current_context_var, tl_context);
if (tok == NULL) {
Py_DECREF(tl_context);
return NULL;
}
Py_DECREF(tok);
return tl_context;
}
static inline PyObject *
current_context(decimal_state *state)
{
PyObject *tl_context;
if (PyContextVar_Get(state->current_context_var, NULL, &tl_context) < 0) {
return NULL;
}
if (tl_context != NULL) {
return tl_context;
}
return init_current_context(state);
}
/* ctxobj := borrowed reference to the current context */
#define CURRENT_CONTEXT(state, ctxobj) \
ctxobj = current_context(state); \
if (ctxobj == NULL) { \
return NULL; \
} \
Py_DECREF(ctxobj);
/* Return a new reference to the current context */
static PyObject *
PyDec_GetCurrentContext(PyObject *self, PyObject *args UNUSED)
{
decimal_state *state = get_module_state(self);
return current_context(state);
}
/* Set the thread local context to a new context, decrement old reference */
static PyObject *
PyDec_SetCurrentContext(PyObject *self, PyObject *v)
{
decimal_state *state = get_module_state(self);
CONTEXT_CHECK(state, v);
/* If the new context is one of the templates, make a copy.
* This is the current behavior of decimal.py. */
if (v == state->default_context_template ||
v == state->basic_context_template ||
v == state->extended_context_template) {
v = context_copy(v, NULL);
if (v == NULL) {
return NULL;
}
CTX(v)->status = 0;
}
else {
Py_INCREF(v);
}
PyObject *tok = PyContextVar_Set(state->current_context_var, v);
Py_DECREF(v);
if (tok == NULL) {
return NULL;
}
Py_DECREF(tok);
Py_RETURN_NONE;
}
#endif
/* Context manager object for the 'with' statement. The manager
* owns one reference to the global (outer) context and one
* to the local (inner) context. */
static PyObject *
ctxmanager_new(PyObject *m, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {
"ctx", "prec", "rounding",
"Emin", "Emax", "capitals",
"clamp", "flags", "traps",
NULL
};
PyObject *local = Py_None;
PyObject *global;
PyObject *prec = Py_None;
PyObject *rounding = Py_None;
PyObject *Emin = Py_None;
PyObject *Emax = Py_None;
PyObject *capitals = Py_None;
PyObject *clamp = Py_None;
PyObject *flags = Py_None;
PyObject *traps = Py_None;
decimal_state *state = get_module_state(m);
CURRENT_CONTEXT(state, global);
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOOOOOOOO", kwlist, &local,
&prec, &rounding, &Emin, &Emax, &capitals, &clamp, &flags, &traps)) {
return NULL;
}
if (local == Py_None) {
local = global;
}
else if (!PyDecContext_Check(state, local)) {
PyErr_SetString(PyExc_TypeError,
"optional argument must be a context");
return NULL;
}
PyObject *local_copy = context_copy(local, NULL);
if (local_copy == NULL) {
return NULL;
}
int ret = context_setattrs(
local_copy, prec, rounding,
Emin, Emax, capitals,
clamp, flags, traps
);
if (ret < 0) {
Py_DECREF(local_copy);
return NULL;
}
PyDecContextManagerObject *self;
self = PyObject_GC_New(PyDecContextManagerObject,
state->PyDecContextManager_Type);
if (self == NULL) {
Py_DECREF(local_copy);
return NULL;
}
self->local = local_copy;
self->global = Py_NewRef(global);
PyObject_GC_Track(self);
return (PyObject *)self;
}
static int
ctxmanager_traverse(PyDecContextManagerObject *self, visitproc visit,
void *arg)
{
Py_VISIT(Py_TYPE(self));
Py_VISIT(self->local);
Py_VISIT(self->global);
return 0;
}
static int
ctxmanager_clear(PyDecContextManagerObject *self)
{
Py_CLEAR(self->local);
Py_CLEAR(self->global);
return 0;
}
static void
ctxmanager_dealloc(PyDecContextManagerObject *self)
{
PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
(void)ctxmanager_clear(self);
tp->tp_free((PyObject *)self);
Py_DECREF(tp);
}
static PyObject *
ctxmanager_set_local(PyDecContextManagerObject *self, PyObject *args UNUSED)
{
PyObject *ret;
ret = PyDec_SetCurrentContext(PyType_GetModule(Py_TYPE(self)), self->local);
if (ret == NULL) {
return NULL;
}
Py_DECREF(ret);
return Py_NewRef(self->local);
}
static PyObject *
ctxmanager_restore_global(PyDecContextManagerObject *self,
PyObject *args UNUSED)
{
PyObject *ret;
ret = PyDec_SetCurrentContext(PyType_GetModule(Py_TYPE(self)), self->global);
if (ret == NULL) {
return NULL;
}
Py_DECREF(ret);
Py_RETURN_NONE;
}
static PyMethodDef ctxmanager_methods[] = {
{"__enter__", (PyCFunction)ctxmanager_set_local, METH_NOARGS, NULL},
{"__exit__", (PyCFunction)ctxmanager_restore_global, METH_VARARGS, NULL},
{NULL, NULL}
};
static PyType_Slot ctxmanager_slots[] = {
{Py_tp_dealloc, ctxmanager_dealloc},
{Py_tp_getattro, PyObject_GenericGetAttr},
{Py_tp_traverse, ctxmanager_traverse},
{Py_tp_clear, ctxmanager_clear},
{Py_tp_methods, ctxmanager_methods},
{0, NULL},
};
static PyType_Spec ctxmanager_spec = {
.name = "decimal.ContextManager",
.basicsize = sizeof(PyDecContextManagerObject),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_DISALLOW_INSTANTIATION),
.slots = ctxmanager_slots,
};
/******************************************************************************/
/* New Decimal Object */
/******************************************************************************/
static PyObject *
PyDecType_New(PyTypeObject *type)
{
PyDecObject *dec;
decimal_state *state = get_module_state_by_def(type);
if (type == state->PyDec_Type) {
dec = PyObject_GC_New(PyDecObject, state->PyDec_Type);
}
else {
dec = (PyDecObject *)type->tp_alloc(type, 0);
}
if (dec == NULL) {
return NULL;
}
dec->hash = -1;
MPD(dec)->flags = MPD_STATIC|MPD_STATIC_DATA;
MPD(dec)->exp = 0;
MPD(dec)->digits = 0;
MPD(dec)->len = 0;
MPD(dec)->alloc = _Py_DEC_MINALLOC;
MPD(dec)->data = dec->data;
return (PyObject *)dec;
}
#define dec_alloc(st) PyDecType_New((st)->PyDec_Type)
static int
dec_traverse(PyObject *dec, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(dec));
return 0;
}
static void
dec_dealloc(PyObject *dec)
{
PyTypeObject *tp = Py_TYPE(dec);
PyObject_GC_UnTrack(dec);
mpd_del(MPD(dec));
tp->tp_free(dec);
Py_DECREF(tp);
}
/******************************************************************************/
/* Conversions to Decimal */
/******************************************************************************/
Py_LOCAL_INLINE(int)
is_space(int kind, const void *data, Py_ssize_t pos)
{
Py_UCS4 ch = PyUnicode_READ(kind, data, pos);
return Py_UNICODE_ISSPACE(ch);
}
/* Return the ASCII representation of a numeric Unicode string. The numeric
string may contain ascii characters in the range [1, 127], any Unicode
space and any unicode digit. If strip_ws is true, leading and trailing
whitespace is stripped. If ignore_underscores is true, underscores are
ignored.
Return NULL if malloc fails and an empty string if invalid characters
are found. */
static char *
numeric_as_ascii(PyObject *u, int strip_ws, int ignore_underscores)
{
int kind;
const void *data;
Py_UCS4 ch;
char *res, *cp;
Py_ssize_t j, len;
int d;
kind = PyUnicode_KIND(u);
data = PyUnicode_DATA(u);
len = PyUnicode_GET_LENGTH(u);
cp = res = PyMem_Malloc(len+1);
if (res == NULL) {
PyErr_NoMemory();
return NULL;
}
j = 0;
if (strip_ws) {
while (len > 0 && is_space(kind, data, len-1)) {
len--;
}
while (j < len && is_space(kind, data, j)) {
j++;
}
}
for (; j < len; j++) {
ch = PyUnicode_READ(kind, data, j);
if (ignore_underscores && ch == '_') {
continue;
}
if (0 < ch && ch <= 127) {
*cp++ = ch;
continue;
}
if (Py_UNICODE_ISSPACE(ch)) {
*cp++ = ' ';
continue;
}
d = Py_UNICODE_TODECIMAL(ch);
if (d < 0) {
/* empty string triggers ConversionSyntax */
*res = '\0';
return res;
}
*cp++ = '0' + d;
}
*cp = '\0';
return res;
}
/* Return a new PyDecObject or a subtype from a C string. Use the context
during conversion. */
static PyObject *
PyDecType_FromCString(PyTypeObject *type, const char *s,
PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
dec = PyDecType_New(type);
if (dec == NULL) {
return NULL;
}
mpd_qset_string(MPD(dec), s, CTX(context), &status);
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
/* Return a new PyDecObject or a subtype from a C string. Attempt exact
conversion. If the operand cannot be converted exactly, set
InvalidOperation. */
static PyObject *
PyDecType_FromCStringExact(PyTypeObject *type, const char *s,
PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
mpd_context_t maxctx;
dec = PyDecType_New(type);
if (dec == NULL) {
return NULL;
}
mpd_maxcontext(&maxctx);
mpd_qset_string(MPD(dec), s, &maxctx, &status);
if (status & (MPD_Inexact|MPD_Rounded|MPD_Clamped)) {
/* we want exact results */
mpd_seterror(MPD(dec), MPD_Invalid_operation, &status);
}
status &= MPD_Errors;
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
/* Return a new PyDecObject or a subtype from a PyUnicodeObject. */
static PyObject *
PyDecType_FromUnicode(PyTypeObject *type, PyObject *u,
PyObject *context)
{
PyObject *dec;
char *s;
s = numeric_as_ascii(u, 0, 0);
if (s == NULL) {
return NULL;
}
dec = PyDecType_FromCString(type, s, context);
PyMem_Free(s);
return dec;
}
/* Return a new PyDecObject or a subtype from a PyUnicodeObject. Attempt exact
* conversion. If the conversion is not exact, fail with InvalidOperation.
* Allow leading and trailing whitespace in the input operand. */
static PyObject *
PyDecType_FromUnicodeExactWS(PyTypeObject *type, PyObject *u,
PyObject *context)
{
PyObject *dec;
char *s;
s = numeric_as_ascii(u, 1, 1);
if (s == NULL) {
return NULL;
}
dec = PyDecType_FromCStringExact(type, s, context);
PyMem_Free(s);
return dec;
}
/* Set PyDecObject from triple without any error checking. */
Py_LOCAL_INLINE(void)
_dec_settriple(PyObject *dec, uint8_t sign, uint32_t v, mpd_ssize_t exp)
{
#ifdef CONFIG_64
MPD(dec)->data[0] = v;
MPD(dec)->len = 1;
#else
uint32_t q, r;
q = v / MPD_RADIX;
r = v - q * MPD_RADIX;
MPD(dec)->data[1] = q;
MPD(dec)->data[0] = r;
MPD(dec)->len = q ? 2 : 1;
#endif
mpd_set_flags(MPD(dec), sign);
MPD(dec)->exp = exp;
mpd_setdigits(MPD(dec));
}
/* Return a new PyDecObject from an mpd_ssize_t. */
static PyObject *
PyDecType_FromSsize(PyTypeObject *type, mpd_ssize_t v, PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
dec = PyDecType_New(type);
if (dec == NULL) {
return NULL;
}
mpd_qset_ssize(MPD(dec), v, CTX(context), &status);
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
/* Return a new PyDecObject from an mpd_ssize_t. Conversion is exact. */
static PyObject *
PyDecType_FromSsizeExact(PyTypeObject *type, mpd_ssize_t v, PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
mpd_context_t maxctx;
dec = PyDecType_New(type);
if (dec == NULL) {
return NULL;
}
mpd_maxcontext(&maxctx);
mpd_qset_ssize(MPD(dec), v, &maxctx, &status);
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
/* Convert from a PyLongObject. The context is not modified; flags set
during conversion are accumulated in the status parameter. */
static PyObject *
dec_from_long(PyTypeObject *type, PyObject *v,
const mpd_context_t *ctx, uint32_t *status)
{
PyObject *dec;
PyLongObject *l = (PyLongObject *)v;
dec = PyDecType_New(type);
if (dec == NULL) {
return NULL;
}
if (_PyLong_IsZero(l)) {
_dec_settriple(dec, MPD_POS, 0, 0);
return dec;
}
uint8_t sign = _PyLong_IsNegative(l) ? MPD_NEG : MPD_POS;
if (_PyLong_IsCompact(l)) {
_dec_settriple(dec, sign, l->long_value.ob_digit[0], 0);
mpd_qfinalize(MPD(dec), ctx, status);
return dec;
}
size_t len = _PyLong_DigitCount(l);
#if PYLONG_BITS_IN_DIGIT == 30
mpd_qimport_u32(MPD(dec), l->long_value.ob_digit, len, sign, PyLong_BASE,
ctx, status);
#elif PYLONG_BITS_IN_DIGIT == 15
mpd_qimport_u16(MPD(dec), l->long_value.ob_digit, len, sign, PyLong_BASE,
ctx, status);
#else
#error "PYLONG_BITS_IN_DIGIT should be 15 or 30"
#endif
return dec;
}
/* Return a new PyDecObject from a PyLongObject. Use the context for
conversion. */
static PyObject *
PyDecType_FromLong(PyTypeObject *type, PyObject *v, PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
if (!PyLong_Check(v)) {
PyErr_SetString(PyExc_TypeError, "argument must be an integer");
return NULL;
}
dec = dec_from_long(type, v, CTX(context), &status);
if (dec == NULL) {
return NULL;
}
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
/* Return a new PyDecObject from a PyLongObject. Use a maximum context
for conversion. If the conversion is not exact, set InvalidOperation. */
static PyObject *
PyDecType_FromLongExact(PyTypeObject *type, PyObject *v,
PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
mpd_context_t maxctx;
if (!PyLong_Check(v)) {
PyErr_SetString(PyExc_TypeError, "argument must be an integer");
return NULL;
}
mpd_maxcontext(&maxctx);
dec = dec_from_long(type, v, &maxctx, &status);
if (dec == NULL) {
return NULL;
}
if (status & (MPD_Inexact|MPD_Rounded|MPD_Clamped)) {
/* we want exact results */
mpd_seterror(MPD(dec), MPD_Invalid_operation, &status);
}
status &= MPD_Errors;
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
/* Return a PyDecObject or a subtype from a PyFloatObject.
Conversion is exact. */
static PyObject *
PyDecType_FromFloatExact(PyTypeObject *type, PyObject *v,
PyObject *context)
{
PyObject *dec, *tmp;
PyObject *n, *d, *n_d;
mpd_ssize_t k;
double x;
int sign;
mpd_t *d1, *d2;
uint32_t status = 0;
mpd_context_t maxctx;
decimal_state *state = get_module_state_by_def(type);
#ifdef Py_DEBUG
assert(PyType_IsSubtype(type, state->PyDec_Type));
#endif
if (PyLong_Check(v)) {
return PyDecType_FromLongExact(type, v, context);
}
if (!PyFloat_Check(v)) {
PyErr_SetString(PyExc_TypeError,
"argument must be int or float");
return NULL;
}
x = PyFloat_AsDouble(v);
if (x == -1.0 && PyErr_Occurred()) {
return NULL;
}
sign = (copysign(1.0, x) == 1.0) ? 0 : 1;
if (Py_IS_NAN(x) || Py_IS_INFINITY(x)) {
dec = PyDecType_New(type);
if (dec == NULL) {
return NULL;
}
if (Py_IS_NAN(x)) {
/* decimal.py calls repr(float(+-nan)),
* which always gives a positive result. */
mpd_setspecial(MPD(dec), MPD_POS, MPD_NAN);
}
else {
mpd_setspecial(MPD(dec), sign, MPD_INF);
}
return dec;
}
/* absolute value of the float */
tmp = state->_py_float_abs(v);
if (tmp == NULL) {
return NULL;
}
/* float as integer ratio: numerator/denominator */
n_d = state->_py_float_as_integer_ratio(tmp, NULL);
Py_DECREF(tmp);
if (n_d == NULL) {
return NULL;
}
n = PyTuple_GET_ITEM(n_d, 0);
d = PyTuple_GET_ITEM(n_d, 1);
tmp = state->_py_long_bit_length(d, NULL);
if (tmp == NULL) {
Py_DECREF(n_d);
return NULL;
}
k = PyLong_AsSsize_t(tmp);
Py_DECREF(tmp);
if (k == -1 && PyErr_Occurred()) {
Py_DECREF(n_d);
return NULL;
}
k--;
dec = PyDecType_FromLongExact(type, n, context);
Py_DECREF(n_d);
if (dec == NULL) {
return NULL;
}
d1 = mpd_qnew();
if (d1 == NULL) {
Py_DECREF(dec);
PyErr_NoMemory();
return NULL;
}
d2 = mpd_qnew();
if (d2 == NULL) {
mpd_del(d1);
Py_DECREF(dec);
PyErr_NoMemory();
return NULL;
}
mpd_maxcontext(&maxctx);
mpd_qset_uint(d1, 5, &maxctx, &status);
mpd_qset_ssize(d2, k, &maxctx, &status);
mpd_qpow(d1, d1, d2, &maxctx, &status);
if (dec_addstatus(context, status)) {
mpd_del(d1);
mpd_del(d2);
Py_DECREF(dec);
return NULL;
}
/* result = n * 5**k */
mpd_qmul(MPD(dec), MPD(dec), d1, &maxctx, &status);
mpd_del(d1);
mpd_del(d2);
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
/* result = +- n * 5**k * 10**-k */
mpd_set_sign(MPD(dec), sign);
MPD(dec)->exp = -k;
return dec;
}
static PyObject *
PyDecType_FromFloat(PyTypeObject *type, PyObject *v,
PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
dec = PyDecType_FromFloatExact(type, v, context);
if (dec == NULL) {
return NULL;
}
mpd_qfinalize(MPD(dec), CTX(context), &status);
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
/* Return a new PyDecObject or a subtype from a Decimal. */
static PyObject *
PyDecType_FromDecimalExact(PyTypeObject *type, PyObject *v, PyObject *context)
{
PyObject *dec;
uint32_t status = 0;
decimal_state *state = get_module_state_by_def(type);
if (type == state->PyDec_Type && PyDec_CheckExact(state, v)) {
return Py_NewRef(v);
}
dec = PyDecType_New(type);
if (dec == NULL) {
return NULL;
}
mpd_qcopy(MPD(dec), MPD(v), &status);
if (dec_addstatus(context, status)) {
Py_DECREF(dec);
return NULL;
}
return dec;
}
static PyObject *
sequence_as_tuple(PyObject *v, PyObject *ex, const char *mesg)
{
if (PyTuple_Check(v)) {
return Py_NewRef(v);
}
if (PyList_Check(v)) {
return PyList_AsTuple(v);
}
PyErr_SetString(ex, mesg);
return NULL;
}
/* Return a new C string representation of a DecimalTuple. */
static char *
dectuple_as_str(PyObject *dectuple)
{
PyObject *digits = NULL, *tmp;
char *decstring = NULL;
char sign_special[6];
char *cp;
long sign, l;
mpd_ssize_t exp = 0;
Py_ssize_t i, mem, tsize;
int is_infinite = 0;
int n;
assert(PyTuple_Check(dectuple));
if (PyTuple_Size(dectuple) != 3) {
PyErr_SetString(PyExc_ValueError,
"argument must be a sequence of length 3");
goto error;
}
/* sign */
tmp = PyTuple_GET_ITEM(dectuple, 0);
if (!PyLong_Check(tmp)) {
PyErr_SetString(PyExc_ValueError,
"sign must be an integer with the value 0 or 1");
goto error;
}
sign = PyLong_AsLong(tmp);
if (sign == -1 && PyErr_Occurred()) {
goto error;
}
if (sign != 0 && sign != 1) {
PyErr_SetString(PyExc_ValueError,
"sign must be an integer with the value 0 or 1");
goto error;
}
sign_special[0] = sign ? '-' : '+';
sign_special[1] = '\0';
/* exponent or encoding for a special number */
tmp = PyTuple_GET_ITEM(dectuple, 2);
if (PyUnicode_Check(tmp)) {
/* special */
if (PyUnicode_CompareWithASCIIString(tmp, "F") == 0) {
strcat(sign_special, "Inf");
is_infinite = 1;
}
else if (PyUnicode_CompareWithASCIIString(tmp, "n") == 0) {
strcat(sign_special, "NaN");
}
else if (PyUnicode_CompareWithASCIIString(tmp, "N") == 0) {
strcat(sign_special, "sNaN");
}
else {
PyErr_SetString(PyExc_ValueError,
"string argument in the third position "
"must be 'F', 'n' or 'N'");
goto error;
}
}
else {
/* exponent */
if (!PyLong_Check(tmp)) {
PyErr_SetString(PyExc_ValueError,
"exponent must be an integer");
goto error;
}
exp = PyLong_AsSsize_t(tmp);
if (exp == -1 && PyErr_Occurred()) {
goto error;
}
}
/* coefficient */
digits = sequence_as_tuple(PyTuple_GET_ITEM(dectuple, 1), PyExc_ValueError,
"coefficient must be a tuple of digits");
if (digits == NULL) {
goto error;
}
tsize = PyTuple_Size(digits);
/* [sign][coeffdigits+1][E][-][expdigits+1]['\0'] */
mem = 1 + tsize + 3 + MPD_EXPDIGITS + 2;
cp = decstring = PyMem_Malloc(mem);
if (decstring == NULL) {
PyErr_NoMemory();
goto error;
}
n = snprintf(cp, mem, "%s", sign_special);
if (n < 0 || n >= mem) {
PyErr_SetString(PyExc_RuntimeError,
"internal error in dec_sequence_as_str");
goto error;
}
cp += n;
if (tsize == 0 && sign_special[1] == '\0') {
/* empty tuple: zero coefficient, except for special numbers */
*cp++ = '0';
}
for (i = 0; i < tsize; i++) {
tmp = PyTuple_GET_ITEM(digits, i);
if (!PyLong_Check(tmp)) {
PyErr_SetString(PyExc_ValueError,
"coefficient must be a tuple of digits");
goto error;
}
l = PyLong_AsLong(tmp);
if (l == -1 && PyErr_Occurred()) {
goto error;
}
if (l < 0 || l > 9) {
PyErr_SetString(PyExc_ValueError,
"coefficient must be a tuple of digits");
goto error;
}
if (is_infinite) {
/* accept but ignore any well-formed coefficient for compatibility
with decimal.py */
continue;
}
*cp++ = (char)l + '0';
}
*cp = '\0';
if (sign_special[1] == '\0') {
/* not a special number */
*cp++ = 'E';
n = snprintf(cp, MPD_EXPDIGITS+2, "%" PRI_mpd_ssize_t, exp);
if (n < 0 || n >= MPD_EXPDIGITS+2) {
PyErr_SetString(PyExc_RuntimeError,
"internal error in dec_sequence_as_str");
goto error;
}
}
Py_XDECREF(digits);
return decstring;
error:
Py_XDECREF(digits);
if (decstring) PyMem_Free(decstring);
return NULL;
}
/* Currently accepts tuples and lists. */
static PyObject *
PyDecType_FromSequence(PyTypeObject *type, PyObject *v,
PyObject *context)
{
PyObject *dectuple;
PyObject *dec;
char *s;
dectuple = sequence_as_tuple(v, PyExc_TypeError,
"argument must be a tuple or list");
if (dectuple == NULL) {
return NULL;
}
s = dectuple_as_str(dectuple);
Py_DECREF(dectuple);
if (s == NULL) {
return NULL;
}
dec = PyDecType_FromCString(type, s, context);
PyMem_Free(s);
return dec;
}
/* Currently accepts tuples and lists. */
static PyObject *
PyDecType_FromSequenceExact(PyTypeObject *type, PyObject *v,
PyObject *context)
{
PyObject *dectuple;
PyObject *dec;
char *s;
dectuple = sequence_as_tuple(v, PyExc_TypeError,
"argument must be a tuple or list");
if (dectuple == NULL) {
return NULL;
}
s = dectuple_as_str(dectuple);
Py_DECREF(dectuple);
if (s == NULL) {
return NULL;
}
dec = PyDecType_FromCStringExact(type, s, context);
PyMem_Free(s);
return dec;
}
#define PyDec_FromCString(st, str, context) \
PyDecType_FromCString((st)->PyDec_Type, str, context)
#define PyDec_FromCStringExact(st, str, context) \
PyDecType_FromCStringExact((st)->PyDec_Type, str, context)
#define PyDec_FromUnicode(st, unicode, context) \
PyDecType_FromUnicode((st)->PyDec_Type, unicode, context)
#define PyDec_FromUnicodeExact(st, unicode, context) \
PyDecType_FromUnicodeExact((st)->PyDec_Type, unicode, context)
#define PyDec_FromUnicodeExactWS(st, unicode, context) \
PyDecType_FromUnicodeExactWS((st)->PyDec_Type, unicode, context)
#define PyDec_FromSsize(st, v, context) \
PyDecType_FromSsize((st)->PyDec_Type, v, context)
#define PyDec_FromSsizeExact(st, v, context) \
PyDecType_FromSsizeExact((st)->PyDec_Type, v, context)
#define PyDec_FromLong(st, pylong, context) \
PyDecType_FromLong((st)->PyDec_Type, pylong, context)
#define PyDec_FromLongExact(st, pylong, context) \
PyDecType_FromLongExact((st)->PyDec_Type, pylong, context)
#define PyDec_FromFloat(st, pyfloat, context) \
PyDecType_FromFloat((st)->PyDec_Type, pyfloat, context)
#define PyDec_FromFloatExact(st, pyfloat, context) \
PyDecType_FromFloatExact((st)->PyDec_Type, pyfloat, context)
#define PyDec_FromSequence(st, sequence, context) \
PyDecType_FromSequence((st)->PyDec_Type, sequence, context)
#define PyDec_FromSequenceExact(st, sequence, context) \
PyDecType_FromSequenceExact((st)->PyDec_Type, sequence, context)
/* class method */
static PyObject *
dec_from_float(PyObject *type, PyObject *pyfloat)
{
PyObject *context;
PyObject *result;
decimal_state *state = get_module_state_by_def((PyTypeObject *)type);
CURRENT_CONTEXT(state, context);
result = PyDecType_FromFloatExact(state->PyDec_Type, pyfloat, context);
if (type != (PyObject *)state->PyDec_Type && result != NULL) {
Py_SETREF(result, PyObject_CallFunctionObjArgs(type, result, NULL));
}
return result;
}
/* create_decimal_from_float */
static PyObject *
ctx_from_float(PyObject *context, PyObject *v)
{
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
return PyDec_FromFloat(state, v, context);
}
/* Apply the context to the input operand. Return a new PyDecObject. */
static PyObject *
dec_apply(PyObject *v, PyObject *context)
{
PyObject *result;
uint32_t status = 0;
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
result = dec_alloc(state);
if (result == NULL) {
return NULL;
}
mpd_qcopy(MPD(result), MPD(v), &status);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
mpd_qfinalize(MPD(result), CTX(context), &status);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
/* 'v' can have any type accepted by the Decimal constructor. Attempt
an exact conversion. If the result does not meet the restrictions
for an mpd_t, fail with InvalidOperation. */
static PyObject *
PyDecType_FromObjectExact(PyTypeObject *type, PyObject *v, PyObject *context)
{
decimal_state *state = get_module_state_by_def(type);
if (v == NULL) {
return PyDecType_FromSsizeExact(type, 0, context);
}
else if (PyDec_Check(state, v)) {
return PyDecType_FromDecimalExact(type, v, context);
}
else if (PyUnicode_Check(v)) {
return PyDecType_FromUnicodeExactWS(type, v, context);
}
else if (PyLong_Check(v)) {
return PyDecType_FromLongExact(type, v, context);
}
else if (PyTuple_Check(v) || PyList_Check(v)) {
return PyDecType_FromSequenceExact(type, v, context);
}
else if (PyFloat_Check(v)) {
if (dec_addstatus(context, MPD_Float_operation)) {
return NULL;
}
return PyDecType_FromFloatExact(type, v, context);
}
else {
PyErr_Format(PyExc_TypeError,
"conversion from %s to Decimal is not supported",
Py_TYPE(v)->tp_name);
return NULL;
}
}
/* The context is used during conversion. This function is the
equivalent of context.create_decimal(). */
static PyObject *
PyDec_FromObject(PyObject *v, PyObject *context)
{
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
if (v == NULL) {
return PyDec_FromSsize(state, 0, context);
}
else if (PyDec_Check(state, v)) {
mpd_context_t *ctx = CTX(context);
if (mpd_isnan(MPD(v)) &&
MPD(v)->digits > ctx->prec - ctx->clamp) {
/* Special case: too many NaN payload digits */
PyObject *result;
if (dec_addstatus(context, MPD_Conversion_syntax)) {
return NULL;
}
result = dec_alloc(state);
if (result == NULL) {
return NULL;
}
mpd_setspecial(MPD(result), MPD_POS, MPD_NAN);
return result;
}
return dec_apply(v, context);
}
else if (PyUnicode_Check(v)) {
return PyDec_FromUnicode(state, v, context);
}
else if (PyLong_Check(v)) {
return PyDec_FromLong(state, v, context);
}
else if (PyTuple_Check(v) || PyList_Check(v)) {
return PyDec_FromSequence(state, v, context);
}
else if (PyFloat_Check(v)) {
if (dec_addstatus(context, MPD_Float_operation)) {
return NULL;
}
return PyDec_FromFloat(state, v, context);
}
else {
PyErr_Format(PyExc_TypeError,
"conversion from %s to Decimal is not supported",
Py_TYPE(v)->tp_name);
return NULL;
}
}
static PyObject *
dec_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"value", "context", NULL};
PyObject *v = NULL;
PyObject *context = Py_None;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OO", kwlist,
&v, &context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(type);
CONTEXT_CHECK_VA(state, context);
return PyDecType_FromObjectExact(type, v, context);
}
static PyObject *
ctx_create_decimal(PyObject *context, PyObject *args)
{
PyObject *v = NULL;
if (!PyArg_ParseTuple(args, "|O", &v)) {
return NULL;
}
return PyDec_FromObject(v, context);
}
/******************************************************************************/
/* Implicit conversions to Decimal */
/******************************************************************************/
/* Try to convert PyObject v to a new PyDecObject conv. If the conversion
fails, set conv to NULL (exception is set). If the conversion is not
implemented, set conv to Py_NotImplemented. */
#define NOT_IMPL 0
#define TYPE_ERR 1
Py_LOCAL_INLINE(int)
convert_op(int type_err, PyObject **conv, PyObject *v, PyObject *context)
{
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
if (PyDec_Check(state, v)) {
*conv = Py_NewRef(v);
return 1;
}
if (PyLong_Check(v)) {
*conv = PyDec_FromLongExact(state, v, context);
if (*conv == NULL) {
return 0;
}
return 1;
}
if (type_err) {
PyErr_Format(PyExc_TypeError,
"conversion from %s to Decimal is not supported",
Py_TYPE(v)->tp_name);
}
else {
*conv = Py_NewRef(Py_NotImplemented);
}
return 0;
}
/* Return NotImplemented for unsupported types. */
#define CONVERT_OP(a, v, context) \
if (!convert_op(NOT_IMPL, a, v, context)) { \
return *(a); \
}
#define CONVERT_BINOP(a, b, v, w, context) \
if (!convert_op(NOT_IMPL, a, v, context)) { \
return *(a); \
} \
if (!convert_op(NOT_IMPL, b, w, context)) { \
Py_DECREF(*(a)); \
return *(b); \
}
#define CONVERT_TERNOP(a, b, c, v, w, x, context) \
if (!convert_op(NOT_IMPL, a, v, context)) { \
return *(a); \
} \
if (!convert_op(NOT_IMPL, b, w, context)) { \
Py_DECREF(*(a)); \
return *(b); \
} \
if (!convert_op(NOT_IMPL, c, x, context)) { \
Py_DECREF(*(a)); \
Py_DECREF(*(b)); \
return *(c); \
}
/* Raise TypeError for unsupported types. */
#define CONVERT_OP_RAISE(a, v, context) \
if (!convert_op(TYPE_ERR, a, v, context)) { \
return NULL; \
}
#define CONVERT_BINOP_RAISE(a, b, v, w, context) \
if (!convert_op(TYPE_ERR, a, v, context)) { \
return NULL; \
} \
if (!convert_op(TYPE_ERR, b, w, context)) { \
Py_DECREF(*(a)); \
return NULL; \
}
#define CONVERT_TERNOP_RAISE(a, b, c, v, w, x, context) \
if (!convert_op(TYPE_ERR, a, v, context)) { \
return NULL; \
} \
if (!convert_op(TYPE_ERR, b, w, context)) { \
Py_DECREF(*(a)); \
return NULL; \
} \
if (!convert_op(TYPE_ERR, c, x, context)) { \
Py_DECREF(*(a)); \
Py_DECREF(*(b)); \
return NULL; \
}
/******************************************************************************/
/* Implicit conversions to Decimal for comparison */
/******************************************************************************/
static PyObject *
multiply_by_denominator(PyObject *v, PyObject *r, PyObject *context)
{
PyObject *result;
PyObject *tmp = NULL;
PyObject *denom = NULL;
uint32_t status = 0;
mpd_context_t maxctx;
mpd_ssize_t exp;
mpd_t *vv;
/* v is not special, r is a rational */
tmp = PyObject_GetAttrString(r, "denominator");
if (tmp == NULL) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
denom = PyDec_FromLongExact(state, tmp, context);
Py_DECREF(tmp);
if (denom == NULL) {
return NULL;
}
vv = mpd_qncopy(MPD(v));
if (vv == NULL) {
Py_DECREF(denom);
PyErr_NoMemory();
return NULL;
}
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(denom);
mpd_del(vv);
return NULL;
}
mpd_maxcontext(&maxctx);
/* Prevent Overflow in the following multiplication. The result of
the multiplication is only used in mpd_qcmp, which can handle
values that are technically out of bounds, like (for 32-bit)
99999999999999999999...99999999e+425000000. */
exp = vv->exp;
vv->exp = 0;
mpd_qmul(MPD(result), vv, MPD(denom), &maxctx, &status);
MPD(result)->exp = exp;
Py_DECREF(denom);
mpd_del(vv);
/* If any status has been accumulated during the multiplication,
the result is invalid. This is very unlikely, since even the
32-bit version supports 425000000 digits. */
if (status) {
PyErr_SetString(PyExc_ValueError,
"exact conversion for comparison failed");
Py_DECREF(result);
return NULL;
}
return result;
}
static PyObject *
numerator_as_decimal(PyObject *r, PyObject *context)
{
PyObject *tmp, *num;
tmp = PyObject_GetAttrString(r, "numerator");
if (tmp == NULL) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
num = PyDec_FromLongExact(state, tmp, context);
Py_DECREF(tmp);
return num;
}
/* Convert v and w for comparison. v is a Decimal. If w is a Rational, both
v and w have to be transformed. Return 1 for success, with new references
to the converted objects in vcmp and wcmp. Return 0 for failure. In that
case wcmp is either NULL or Py_NotImplemented (new reference) and vcmp
is undefined. */
static int
convert_op_cmp(PyObject **vcmp, PyObject **wcmp, PyObject *v, PyObject *w,
int op, PyObject *context)
{
mpd_context_t *ctx = CTX(context);
*vcmp = v;
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
if (PyDec_Check(state, w)) {
*wcmp = Py_NewRef(w);
}
else if (PyLong_Check(w)) {
*wcmp = PyDec_FromLongExact(state, w, context);
}
else if (PyFloat_Check(w)) {
if (op != Py_EQ && op != Py_NE &&
dec_addstatus(context, MPD_Float_operation)) {
*wcmp = NULL;
}
else {
ctx->status |= MPD_Float_operation;
*wcmp = PyDec_FromFloatExact(state, w, context);
}
}
else if (PyComplex_Check(w) && (op == Py_EQ || op == Py_NE)) {
Py_complex c = PyComplex_AsCComplex(w);
if (c.real == -1.0 && PyErr_Occurred()) {
*wcmp = NULL;
}
else if (c.imag == 0.0) {
PyObject *tmp = PyFloat_FromDouble(c.real);
if (tmp == NULL) {
*wcmp = NULL;
}
else {
ctx->status |= MPD_Float_operation;
*wcmp = PyDec_FromFloatExact(state, tmp, context);
Py_DECREF(tmp);
}
}
else {
*wcmp = Py_NewRef(Py_NotImplemented);
}
}
else {
int is_rational = PyObject_IsInstance(w, state->Rational);
if (is_rational < 0) {
*wcmp = NULL;
}
else if (is_rational > 0) {
*wcmp = numerator_as_decimal(w, context);
if (*wcmp && !mpd_isspecial(MPD(v))) {
*vcmp = multiply_by_denominator(v, w, context);
if (*vcmp == NULL) {
Py_CLEAR(*wcmp);
}
}
}
else {
*wcmp = Py_NewRef(Py_NotImplemented);
}
}
if (*wcmp == NULL || *wcmp == Py_NotImplemented) {
return 0;
}
if (*vcmp == v) {
Py_INCREF(v);
}
return 1;
}
#define CONVERT_BINOP_CMP(vcmp, wcmp, v, w, op, ctx) \
if (!convert_op_cmp(vcmp, wcmp, v, w, op, ctx)) { \
return *(wcmp); \
} \
/******************************************************************************/
/* Conversions from decimal */
/******************************************************************************/
static PyObject *
unicode_fromascii(const char *s, Py_ssize_t size)
{
PyObject *res;
res = PyUnicode_New(size, 127);
if (res == NULL) {
return NULL;
}
memcpy(PyUnicode_1BYTE_DATA(res), s, size);
return res;
}
/* PyDecObject as a string. The default module context is only used for
the value of 'capitals'. */
static PyObject *
dec_str(PyObject *dec)
{
PyObject *res, *context;
mpd_ssize_t size;
char *cp;
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
CURRENT_CONTEXT(state, context);
size = mpd_to_sci_size(&cp, MPD(dec), CtxCaps(context));
if (size < 0) {
PyErr_NoMemory();
return NULL;
}
res = unicode_fromascii(cp, size);
mpd_free(cp);
return res;
}
/* Representation of a PyDecObject. */
static PyObject *
dec_repr(PyObject *dec)
{
PyObject *res, *context;
char *cp;
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
CURRENT_CONTEXT(state, context);
cp = mpd_to_sci(MPD(dec), CtxCaps(context));
if (cp == NULL) {
PyErr_NoMemory();
return NULL;
}
res = PyUnicode_FromFormat("Decimal('%s')", cp);
mpd_free(cp);
return res;
}
/* Return a duplicate of src, copy embedded null characters. */
static char *
dec_strdup(const char *src, Py_ssize_t size)
{
char *dest = PyMem_Malloc(size+1);
if (dest == NULL) {
PyErr_NoMemory();
return NULL;
}
memcpy(dest, src, size);
dest[size] = '\0';
return dest;
}
static void
dec_replace_fillchar(char *dest)
{
while (*dest != '\0') {
if (*dest == '\xff') *dest = '\0';
dest++;
}
}
/* Convert decimal_point or thousands_sep, which may be multibyte or in
the range [128, 255], to a UTF8 string. */
static PyObject *
dotsep_as_utf8(const char *s)
{
PyObject *utf8;
PyObject *tmp;
wchar_t buf[2];
size_t n;
n = mbstowcs(buf, s, 2);
if (n != 1) { /* Issue #7442 */
PyErr_SetString(PyExc_ValueError,
"invalid decimal point or unsupported "
"combination of LC_CTYPE and LC_NUMERIC");
return NULL;
}
tmp = PyUnicode_FromWideChar(buf, n);
if (tmp == NULL) {
return NULL;
}
utf8 = PyUnicode_AsUTF8String(tmp);
Py_DECREF(tmp);
return utf8;
}
static int
dict_get_item_string(PyObject *dict, const char *key, PyObject **valueobj, const char **valuestr)
{
*valueobj = NULL;
PyObject *keyobj = PyUnicode_FromString(key);
if (keyobj == NULL) {
return -1;
}
PyObject *value = PyDict_GetItemWithError(dict, keyobj);
Py_DECREF(keyobj);
if (value == NULL) {
if (PyErr_Occurred()) {
return -1;
}
return 0;
}
value = PyUnicode_AsUTF8String(value);
if (value == NULL) {
return -1;
}
*valueobj = value;
*valuestr = PyBytes_AS_STRING(value);
return 0;
}
/*
* Fallback _pydecimal formatting for new format specifiers that mpdecimal does
* not yet support. As documented, libmpdec follows the PEP-3101 format language:
* https://www.bytereef.org/mpdecimal/doc/libmpdec/assign-convert.html#to-string
*/
static PyObject *
pydec_format(PyObject *dec, PyObject *context, PyObject *fmt, decimal_state *state)
{
PyObject *result;
PyObject *pydec;
PyObject *u;
if (state->PyDecimal == NULL) {
state->PyDecimal = _PyImport_GetModuleAttrString("_pydecimal", "Decimal");
if (state->PyDecimal == NULL) {
return NULL;
}
}
u = dec_str(dec);
if (u == NULL) {
return NULL;
}
pydec = PyObject_CallOneArg(state->PyDecimal, u);
Py_DECREF(u);
if (pydec == NULL) {
return NULL;
}
result = PyObject_CallMethod(pydec, "__format__", "(OO)", fmt, context);
Py_DECREF(pydec);
if (result == NULL && PyErr_ExceptionMatches(PyExc_ValueError)) {
/* Do not confuse users with the _pydecimal exception */
PyErr_Clear();
PyErr_SetString(PyExc_ValueError, "invalid format string");
}
return result;
}
/* Formatted representation of a PyDecObject. */
static PyObject *
dec_format(PyObject *dec, PyObject *args)
{
PyObject *result = NULL;
PyObject *override = NULL;
PyObject *dot = NULL;
PyObject *sep = NULL;
PyObject *grouping = NULL;
PyObject *fmtarg;
PyObject *context;
mpd_spec_t spec;
char *fmt;
char *decstring = NULL;
uint32_t status = 0;
int replace_fillchar = 0;
Py_ssize_t size;
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
CURRENT_CONTEXT(state, context);
if (!PyArg_ParseTuple(args, "O|O", &fmtarg, &override)) {
return NULL;
}
if (PyUnicode_Check(fmtarg)) {
fmt = (char *)PyUnicode_AsUTF8AndSize(fmtarg, &size);
if (fmt == NULL) {
return NULL;
}
if (size > 0 && fmt[size-1] == 'N') {
if (PyErr_WarnEx(PyExc_DeprecationWarning,
"Format specifier 'N' is deprecated", 1) < 0) {
return NULL;
}
}
if (size > 0 && fmt[0] == '\0') {
/* NUL fill character: must be replaced with a valid UTF-8 char
before calling mpd_parse_fmt_str(). */
replace_fillchar = 1;
fmt = dec_strdup(fmt, size);
if (fmt == NULL) {
return NULL;
}
fmt[0] = '_';
}
}
else {
PyErr_SetString(PyExc_TypeError,
"format arg must be str");
return NULL;
}
if (!mpd_parse_fmt_str(&spec, fmt, CtxCaps(context))) {
if (replace_fillchar) {
PyMem_Free(fmt);
}
return pydec_format(dec, context, fmtarg, state);
}
if (replace_fillchar) {
/* In order to avoid clobbering parts of UTF-8 thousands separators or
decimal points when the substitution is reversed later, the actual
placeholder must be an invalid UTF-8 byte. */
spec.fill[0] = '\xff';
spec.fill[1] = '\0';
}
if (override) {
/* Values for decimal_point, thousands_sep and grouping can
be explicitly specified in the override dict. These values
take precedence over the values obtained from localeconv()
in mpd_parse_fmt_str(). The feature is not documented and
is only used in test_decimal. */
if (!PyDict_Check(override)) {
PyErr_SetString(PyExc_TypeError,
"optional argument must be a dict");
goto finish;
}
if (dict_get_item_string(override, "decimal_point", &dot, &spec.dot) ||
dict_get_item_string(override, "thousands_sep", &sep, &spec.sep) ||
dict_get_item_string(override, "grouping", &grouping, &spec.grouping))
{
goto finish;
}
if (mpd_validate_lconv(&spec) < 0) {
PyErr_SetString(PyExc_ValueError,
"invalid override dict");
goto finish;
}
}
else {
size_t n = strlen(spec.dot);
if (n > 1 || (n == 1 && !isascii((unsigned char)spec.dot[0]))) {
/* fix locale dependent non-ascii characters */
dot = dotsep_as_utf8(spec.dot);
if (dot == NULL) {
goto finish;
}
spec.dot = PyBytes_AS_STRING(dot);
}
n = strlen(spec.sep);
if (n > 1 || (n == 1 && !isascii((unsigned char)spec.sep[0]))) {
/* fix locale dependent non-ascii characters */
sep = dotsep_as_utf8(spec.sep);
if (sep == NULL) {
goto finish;
}
spec.sep = PyBytes_AS_STRING(sep);
}
}
decstring = mpd_qformat_spec(MPD(dec), &spec, CTX(context), &status);
if (decstring == NULL) {
if (status & MPD_Malloc_error) {
PyErr_NoMemory();
}
else {
PyErr_SetString(PyExc_ValueError,
"format specification exceeds internal limits of _decimal");
}
goto finish;
}
size = strlen(decstring);
if (replace_fillchar) {
dec_replace_fillchar(decstring);
}
result = PyUnicode_DecodeUTF8(decstring, size, NULL);
finish:
Py_XDECREF(grouping);
Py_XDECREF(sep);
Py_XDECREF(dot);
if (replace_fillchar) PyMem_Free(fmt);
if (decstring) mpd_free(decstring);
return result;
}
/* Return a PyLongObject from a PyDecObject, using the specified rounding
* mode. The context precision is not observed. */
static PyObject *
dec_as_long(PyObject *dec, PyObject *context, int round)
{
PyLongObject *pylong;
digit *ob_digit;
size_t n;
mpd_t *x;
mpd_context_t workctx;
uint32_t status = 0;
if (mpd_isspecial(MPD(dec))) {
if (mpd_isnan(MPD(dec))) {
PyErr_SetString(PyExc_ValueError,
"cannot convert NaN to integer");
}
else {
PyErr_SetString(PyExc_OverflowError,
"cannot convert Infinity to integer");
}
return NULL;
}
x = mpd_qnew();
if (x == NULL) {
PyErr_NoMemory();
return NULL;
}
workctx = *CTX(context);
workctx.round = round;
mpd_qround_to_int(x, MPD(dec), &workctx, &status);
if (dec_addstatus(context, status)) {
mpd_del(x);
return NULL;
}
status = 0;
ob_digit = NULL;
#if PYLONG_BITS_IN_DIGIT == 30
n = mpd_qexport_u32(&ob_digit, 0, PyLong_BASE, x, &status);
#elif PYLONG_BITS_IN_DIGIT == 15
n = mpd_qexport_u16(&ob_digit, 0, PyLong_BASE, x, &status);
#else
#error "PYLONG_BITS_IN_DIGIT should be 15 or 30"
#endif
if (n == SIZE_MAX) {
PyErr_NoMemory();
mpd_del(x);
return NULL;
}
if (n == 1) {
sdigit val = mpd_arith_sign(x) * ob_digit[0];
mpd_free(ob_digit);
mpd_del(x);
return PyLong_FromLong(val);
}
assert(n > 0);
assert(!mpd_iszero(x));
pylong = _PyLong_FromDigits(mpd_isnegative(x), n, ob_digit);
mpd_free(ob_digit);
mpd_del(x);
return (PyObject *) pylong;
}
/* Convert a Decimal to its exact integer ratio representation. */
static PyObject *
dec_as_integer_ratio(PyObject *self, PyObject *args UNUSED)
{
PyObject *numerator = NULL;
PyObject *denominator = NULL;
PyObject *exponent = NULL;
PyObject *result = NULL;
PyObject *tmp;
mpd_ssize_t exp;
PyObject *context;
uint32_t status = 0;
if (mpd_isspecial(MPD(self))) {
if (mpd_isnan(MPD(self))) {
PyErr_SetString(PyExc_ValueError,
"cannot convert NaN to integer ratio");
}
else {
PyErr_SetString(PyExc_OverflowError,
"cannot convert Infinity to integer ratio");
}
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CURRENT_CONTEXT(state, context);
tmp = dec_alloc(state);
if (tmp == NULL) {
return NULL;
}
if (!mpd_qcopy(MPD(tmp), MPD(self), &status)) {
Py_DECREF(tmp);
PyErr_NoMemory();
return NULL;
}
exp = mpd_iszero(MPD(tmp)) ? 0 : MPD(tmp)->exp;
MPD(tmp)->exp = 0;
/* context and rounding are unused here: the conversion is exact */
numerator = dec_as_long(tmp, context, MPD_ROUND_FLOOR);
Py_DECREF(tmp);
if (numerator == NULL) {
goto error;
}
exponent = PyLong_FromSsize_t(exp < 0 ? -exp : exp);
if (exponent == NULL) {
goto error;
}
tmp = PyLong_FromLong(10);
if (tmp == NULL) {
goto error;
}
Py_SETREF(exponent, state->_py_long_power(tmp, exponent, Py_None));
Py_DECREF(tmp);
if (exponent == NULL) {
goto error;
}
if (exp >= 0) {
Py_SETREF(numerator, state->_py_long_multiply(numerator, exponent));
if (numerator == NULL) {
goto error;
}
denominator = PyLong_FromLong(1);
if (denominator == NULL) {
goto error;
}
}
else {
denominator = exponent;
exponent = NULL;
tmp = _PyLong_GCD(numerator, denominator);
if (tmp == NULL) {
goto error;
}
Py_SETREF(numerator, state->_py_long_floor_divide(numerator, tmp));
if (numerator == NULL) {
Py_DECREF(tmp);
goto error;
}
Py_SETREF(denominator, state->_py_long_floor_divide(denominator, tmp));
Py_DECREF(tmp);
if (denominator == NULL) {
goto error;
}
}
result = PyTuple_Pack(2, numerator, denominator);
error:
Py_XDECREF(exponent);
Py_XDECREF(denominator);
Py_XDECREF(numerator);
return result;
}
static PyObject *
PyDec_ToIntegralValue(PyObject *dec, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"rounding", "context", NULL};
PyObject *result;
PyObject *rounding = Py_None;
PyObject *context = Py_None;
uint32_t status = 0;
mpd_context_t workctx;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OO", kwlist,
&rounding, &context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
CONTEXT_CHECK_VA(state, context);
workctx = *CTX(context);
if (rounding != Py_None) {
int round = getround(state, rounding);
if (round < 0) {
return NULL;
}
if (!mpd_qsetround(&workctx, round)) {
INTERNAL_ERROR_PTR("PyDec_ToIntegralValue"); /* GCOV_NOT_REACHED */
}
}
result = dec_alloc(state);
if (result == NULL) {
return NULL;
}
mpd_qround_to_int(MPD(result), MPD(dec), &workctx, &status);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
static PyObject *
PyDec_ToIntegralExact(PyObject *dec, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"rounding", "context", NULL};
PyObject *result;
PyObject *rounding = Py_None;
PyObject *context = Py_None;
uint32_t status = 0;
mpd_context_t workctx;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OO", kwlist,
&rounding, &context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
CONTEXT_CHECK_VA(state, context);
workctx = *CTX(context);
if (rounding != Py_None) {
int round = getround(state, rounding);
if (round < 0) {
return NULL;
}
if (!mpd_qsetround(&workctx, round)) {
INTERNAL_ERROR_PTR("PyDec_ToIntegralExact"); /* GCOV_NOT_REACHED */
}
}
result = dec_alloc(state);
if (result == NULL) {
return NULL;
}
mpd_qround_to_intx(MPD(result), MPD(dec), &workctx, &status);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
static PyObject *
PyDec_AsFloat(PyObject *dec)
{
PyObject *f, *s;
if (mpd_isnan(MPD(dec))) {
if (mpd_issnan(MPD(dec))) {
PyErr_SetString(PyExc_ValueError,
"cannot convert signaling NaN to float");
return NULL;
}
if (mpd_isnegative(MPD(dec))) {
s = PyUnicode_FromString("-nan");
}
else {
s = PyUnicode_FromString("nan");
}
}
else {
s = dec_str(dec);
}
if (s == NULL) {
return NULL;
}
f = PyFloat_FromString(s);
Py_DECREF(s);
return f;
}
static PyObject *
PyDec_Round(PyObject *dec, PyObject *args)
{
PyObject *result;
PyObject *x = NULL;
uint32_t status = 0;
PyObject *context;
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
CURRENT_CONTEXT(state, context);
if (!PyArg_ParseTuple(args, "|O", &x)) {
return NULL;
}
if (x) {
mpd_uint_t dq[1] = {1};
mpd_t q = {MPD_STATIC|MPD_CONST_DATA,0,1,1,1,dq};
mpd_ssize_t y;
if (!PyLong_Check(x)) {
PyErr_SetString(PyExc_TypeError,
"optional arg must be an integer");
return NULL;
}
y = PyLong_AsSsize_t(x);
if (y == -1 && PyErr_Occurred()) {
return NULL;
}
result = dec_alloc(state);
if (result == NULL) {
return NULL;
}
q.exp = (y == MPD_SSIZE_MIN) ? MPD_SSIZE_MAX : -y;
mpd_qquantize(MPD(result), MPD(dec), &q, CTX(context), &status);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
else {
return dec_as_long(dec, context, MPD_ROUND_HALF_EVEN);
}
}
/* Return the DecimalTuple representation of a PyDecObject. */
static PyObject *
PyDec_AsTuple(PyObject *dec, PyObject *dummy UNUSED)
{
PyObject *result = NULL;
PyObject *sign = NULL;
PyObject *coeff = NULL;
PyObject *expt = NULL;
PyObject *tmp = NULL;
mpd_t *x = NULL;
char *intstring = NULL;
Py_ssize_t intlen, i;
x = mpd_qncopy(MPD(dec));
if (x == NULL) {
PyErr_NoMemory();
goto out;
}
sign = PyLong_FromUnsignedLong(mpd_sign(MPD(dec)));
if (sign == NULL) {
goto out;
}
if (mpd_isinfinite(x)) {
expt = PyUnicode_FromString("F");
if (expt == NULL) {
goto out;
}
/* decimal.py has non-compliant infinity payloads. */
coeff = Py_BuildValue("(i)", 0);
if (coeff == NULL) {
goto out;
}
}
else {
if (mpd_isnan(x)) {
expt = PyUnicode_FromString(mpd_isqnan(x)?"n":"N");
}
else {
expt = PyLong_FromSsize_t(MPD(dec)->exp);
}
if (expt == NULL) {
goto out;
}
/* coefficient is defined */
if (x->len > 0) {
/* make an integer */
x->exp = 0;
/* clear NaN and sign */
mpd_clear_flags(x);
intstring = mpd_to_sci(x, 1);
if (intstring == NULL) {
PyErr_NoMemory();
goto out;
}
intlen = strlen(intstring);
coeff = PyTuple_New(intlen);
if (coeff == NULL) {
goto out;
}
for (i = 0; i < intlen; i++) {
tmp = PyLong_FromLong(intstring[i]-'0');
if (tmp == NULL) {
goto out;
}
PyTuple_SET_ITEM(coeff, i, tmp);
}
}
else {
coeff = PyTuple_New(0);
if (coeff == NULL) {
goto out;
}
}
}
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
result = PyObject_CallFunctionObjArgs((PyObject *)state->DecimalTuple,
sign, coeff, expt, NULL);
out:
if (x) mpd_del(x);
if (intstring) mpd_free(intstring);
Py_XDECREF(sign);
Py_XDECREF(coeff);
Py_XDECREF(expt);
return result;
}
/******************************************************************************/
/* Macros for converting mpdecimal functions to Decimal methods */
/******************************************************************************/
/* Unary number method that uses the default module context. */
#define Dec_UnaryNumberMethod(MPDFUNC) \
static PyObject * \
nm_##MPDFUNC(PyObject *self) \
{ \
PyObject *result; \
PyObject *context; \
uint32_t status = 0; \
\
decimal_state *state = get_module_state_by_def(Py_TYPE(self)); \
CURRENT_CONTEXT(state, context); \
if ((result = dec_alloc(state)) == NULL) { \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(self), CTX(context), &status); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/* Binary number method that uses default module context. */
#define Dec_BinaryNumberMethod(MPDFUNC) \
static PyObject * \
nm_##MPDFUNC(PyObject *self, PyObject *other) \
{ \
PyObject *a, *b; \
PyObject *result; \
PyObject *context; \
uint32_t status = 0; \
\
decimal_state *state = find_state_left_or_right(self, other); \
CURRENT_CONTEXT(state, context) ; \
CONVERT_BINOP(&a, &b, self, other, context); \
\
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
Py_DECREF(b); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), MPD(b), CTX(context), &status); \
Py_DECREF(a); \
Py_DECREF(b); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/* Boolean function without a context arg. */
#define Dec_BoolFunc(MPDFUNC) \
static PyObject * \
dec_##MPDFUNC(PyObject *self, PyObject *dummy UNUSED) \
{ \
return MPDFUNC(MPD(self)) ? incr_true() : incr_false(); \
}
/* Boolean function with an optional context arg. */
#define Dec_BoolFuncVA(MPDFUNC) \
static PyObject * \
dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds) \
{ \
static char *kwlist[] = {"context", NULL}; \
PyObject *context = Py_None; \
\
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O", kwlist, \
&context)) { \
return NULL; \
} \
decimal_state *state = get_module_state_by_def(Py_TYPE(self)); \
CONTEXT_CHECK_VA(state, context); \
\
return MPDFUNC(MPD(self), CTX(context)) ? incr_true() : incr_false(); \
}
/* Unary function with an optional context arg. */
#define Dec_UnaryFuncVA(MPDFUNC) \
static PyObject * \
dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds) \
{ \
static char *kwlist[] = {"context", NULL}; \
PyObject *result; \
PyObject *context = Py_None; \
uint32_t status = 0; \
\
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O", kwlist, \
&context)) { \
return NULL; \
} \
decimal_state *state = \
get_module_state_by_def(Py_TYPE(self)); \
CONTEXT_CHECK_VA(state, context); \
\
if ((result = dec_alloc(state)) == NULL) { \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(self), CTX(context), &status); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/* Binary function with an optional context arg. */
#define Dec_BinaryFuncVA(MPDFUNC) \
static PyObject * \
dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds) \
{ \
static char *kwlist[] = {"other", "context", NULL}; \
PyObject *other; \
PyObject *a, *b; \
PyObject *result; \
PyObject *context = Py_None; \
uint32_t status = 0; \
\
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O", kwlist, \
&other, &context)) { \
return NULL; \
} \
decimal_state *state = \
get_module_state_by_def(Py_TYPE(self)); \
CONTEXT_CHECK_VA(state, context); \
CONVERT_BINOP_RAISE(&a, &b, self, other, context); \
\
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
Py_DECREF(b); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), MPD(b), CTX(context), &status); \
Py_DECREF(a); \
Py_DECREF(b); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/* Binary function with an optional context arg. Actual MPDFUNC does
NOT take a context. The context is used to record InvalidOperation
if the second operand cannot be converted exactly. */
#define Dec_BinaryFuncVA_NO_CTX(MPDFUNC) \
static PyObject * \
dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds) \
{ \
static char *kwlist[] = {"other", "context", NULL}; \
PyObject *context = Py_None; \
PyObject *other; \
PyObject *a, *b; \
PyObject *result; \
\
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O", kwlist, \
&other, &context)) { \
return NULL; \
} \
decimal_state *state = \
get_module_state_by_def(Py_TYPE(self)); \
CONTEXT_CHECK_VA(state, context); \
CONVERT_BINOP_RAISE(&a, &b, self, other, context); \
\
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
Py_DECREF(b); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), MPD(b)); \
Py_DECREF(a); \
Py_DECREF(b); \
\
return result; \
}
/* Ternary function with an optional context arg. */
#define Dec_TernaryFuncVA(MPDFUNC) \
static PyObject * \
dec_##MPDFUNC(PyObject *self, PyObject *args, PyObject *kwds) \
{ \
static char *kwlist[] = {"other", "third", "context", NULL}; \
PyObject *other, *third; \
PyObject *a, *b, *c; \
PyObject *result; \
PyObject *context = Py_None; \
uint32_t status = 0; \
\
if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO|O", kwlist, \
&other, &third, &context)) { \
return NULL; \
} \
decimal_state *state = get_module_state_by_def(Py_TYPE(self)); \
CONTEXT_CHECK_VA(state, context); \
CONVERT_TERNOP_RAISE(&a, &b, &c, self, other, third, context); \
\
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
Py_DECREF(b); \
Py_DECREF(c); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), MPD(b), MPD(c), CTX(context), &status); \
Py_DECREF(a); \
Py_DECREF(b); \
Py_DECREF(c); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/**********************************************/
/* Number methods */
/**********************************************/
Dec_UnaryNumberMethod(mpd_qminus)
Dec_UnaryNumberMethod(mpd_qplus)
Dec_UnaryNumberMethod(mpd_qabs)
Dec_BinaryNumberMethod(mpd_qadd)
Dec_BinaryNumberMethod(mpd_qsub)
Dec_BinaryNumberMethod(mpd_qmul)
Dec_BinaryNumberMethod(mpd_qdiv)
Dec_BinaryNumberMethod(mpd_qrem)
Dec_BinaryNumberMethod(mpd_qdivint)
static PyObject *
nm_dec_as_long(PyObject *dec)
{
PyObject *context;
decimal_state *state = get_module_state_by_def(Py_TYPE(dec));
CURRENT_CONTEXT(state, context);
return dec_as_long(dec, context, MPD_ROUND_DOWN);
}
static int
nm_nonzero(PyObject *v)
{
return !mpd_iszero(MPD(v));
}
static PyObject *
nm_mpd_qdivmod(PyObject *v, PyObject *w)
{
PyObject *a, *b;
PyObject *q, *r;
PyObject *context;
uint32_t status = 0;
PyObject *ret;
decimal_state *state = find_state_left_or_right(v, w);
CURRENT_CONTEXT(state, context);
CONVERT_BINOP(&a, &b, v, w, context);
q = dec_alloc(state);
if (q == NULL) {
Py_DECREF(a);
Py_DECREF(b);
return NULL;
}
r = dec_alloc(state);
if (r == NULL) {
Py_DECREF(a);
Py_DECREF(b);
Py_DECREF(q);
return NULL;
}
mpd_qdivmod(MPD(q), MPD(r), MPD(a), MPD(b), CTX(context), &status);
Py_DECREF(a);
Py_DECREF(b);
if (dec_addstatus(context, status)) {
Py_DECREF(r);
Py_DECREF(q);
return NULL;
}
ret = PyTuple_Pack(2, q, r);
Py_DECREF(r);
Py_DECREF(q);
return ret;
}
static PyObject *
nm_mpd_qpow(PyObject *base, PyObject *exp, PyObject *mod)
{
PyObject *a, *b, *c = NULL;
PyObject *result;
PyObject *context;
uint32_t status = 0;
decimal_state *state = find_state_left_or_right(base, exp);
CURRENT_CONTEXT(state, context);
CONVERT_BINOP(&a, &b, base, exp, context);
if (mod != Py_None) {
if (!convert_op(NOT_IMPL, &c, mod, context)) {
Py_DECREF(a);
Py_DECREF(b);
return c;
}
}
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(a);
Py_DECREF(b);
Py_XDECREF(c);
return NULL;
}
if (c == NULL) {
mpd_qpow(MPD(result), MPD(a), MPD(b),
CTX(context), &status);
}
else {
mpd_qpowmod(MPD(result), MPD(a), MPD(b), MPD(c),
CTX(context), &status);
Py_DECREF(c);
}
Py_DECREF(a);
Py_DECREF(b);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
/******************************************************************************/
/* Decimal Methods */
/******************************************************************************/
/* Unary arithmetic functions, optional context arg */
Dec_UnaryFuncVA(mpd_qexp)
Dec_UnaryFuncVA(mpd_qln)
Dec_UnaryFuncVA(mpd_qlog10)
Dec_UnaryFuncVA(mpd_qnext_minus)
Dec_UnaryFuncVA(mpd_qnext_plus)
Dec_UnaryFuncVA(mpd_qreduce)
Dec_UnaryFuncVA(mpd_qsqrt)
/* Binary arithmetic functions, optional context arg */
Dec_BinaryFuncVA(mpd_qcompare)
Dec_BinaryFuncVA(mpd_qcompare_signal)
Dec_BinaryFuncVA(mpd_qmax)
Dec_BinaryFuncVA(mpd_qmax_mag)
Dec_BinaryFuncVA(mpd_qmin)
Dec_BinaryFuncVA(mpd_qmin_mag)
Dec_BinaryFuncVA(mpd_qnext_toward)
Dec_BinaryFuncVA(mpd_qrem_near)
/* Ternary arithmetic functions, optional context arg */
Dec_TernaryFuncVA(mpd_qfma)
/* Boolean functions, no context arg */
Dec_BoolFunc(mpd_iscanonical)
Dec_BoolFunc(mpd_isfinite)
Dec_BoolFunc(mpd_isinfinite)
Dec_BoolFunc(mpd_isnan)
Dec_BoolFunc(mpd_isqnan)
Dec_BoolFunc(mpd_issnan)
Dec_BoolFunc(mpd_issigned)
Dec_BoolFunc(mpd_iszero)
/* Boolean functions, optional context arg */
Dec_BoolFuncVA(mpd_isnormal)
Dec_BoolFuncVA(mpd_issubnormal)
/* Unary functions, no context arg */
static PyObject *
dec_mpd_adjexp(PyObject *self, PyObject *dummy UNUSED)
{
mpd_ssize_t retval;
if (mpd_isspecial(MPD(self))) {
retval = 0;
}
else {
retval = mpd_adjexp(MPD(self));
}
return PyLong_FromSsize_t(retval);
}
static PyObject *
dec_canonical(PyObject *self, PyObject *dummy UNUSED)
{
return Py_NewRef(self);
}
static PyObject *
dec_conjugate(PyObject *self, PyObject *dummy UNUSED)
{
return Py_NewRef(self);
}
static PyObject *
dec_mpd_radix(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *result;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
result = dec_alloc(state);
if (result == NULL) {
return NULL;
}
_dec_settriple(result, MPD_POS, 10, 0);
return result;
}
static PyObject *
dec_mpd_qcopy_abs(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *result;
uint32_t status = 0;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
if ((result = dec_alloc(state)) == NULL) {
return NULL;
}
mpd_qcopy_abs(MPD(result), MPD(self), &status);
if (status & MPD_Malloc_error) {
Py_DECREF(result);
PyErr_NoMemory();
return NULL;
}
return result;
}
static PyObject *
dec_mpd_qcopy_negate(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *result;
uint32_t status = 0;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
if ((result = dec_alloc(state)) == NULL) {
return NULL;
}
mpd_qcopy_negate(MPD(result), MPD(self), &status);
if (status & MPD_Malloc_error) {
Py_DECREF(result);
PyErr_NoMemory();
return NULL;
}
return result;
}
/* Unary functions, optional context arg */
Dec_UnaryFuncVA(mpd_qinvert)
Dec_UnaryFuncVA(mpd_qlogb)
static PyObject *
dec_mpd_class(PyObject *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"context", NULL};
PyObject *context = Py_None;
const char *cp;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O", kwlist,
&context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CONTEXT_CHECK_VA(state, context);
cp = mpd_class(MPD(self), CTX(context));
return PyUnicode_FromString(cp);
}
static PyObject *
dec_mpd_to_eng(PyObject *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"context", NULL};
PyObject *result;
PyObject *context = Py_None;
mpd_ssize_t size;
char *s;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O", kwlist,
&context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CONTEXT_CHECK_VA(state, context);
size = mpd_to_eng_size(&s, MPD(self), CtxCaps(context));
if (size < 0) {
PyErr_NoMemory();
return NULL;
}
result = unicode_fromascii(s, size);
mpd_free(s);
return result;
}
/* Binary functions, optional context arg for conversion errors */
Dec_BinaryFuncVA_NO_CTX(mpd_compare_total)
Dec_BinaryFuncVA_NO_CTX(mpd_compare_total_mag)
static PyObject *
dec_mpd_qcopy_sign(PyObject *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"other", "context", NULL};
PyObject *other;
PyObject *a, *b;
PyObject *result;
PyObject *context = Py_None;
uint32_t status = 0;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O", kwlist,
&other, &context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CONTEXT_CHECK_VA(state, context);
CONVERT_BINOP_RAISE(&a, &b, self, other, context);
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(a);
Py_DECREF(b);
return NULL;
}
mpd_qcopy_sign(MPD(result), MPD(a), MPD(b), &status);
Py_DECREF(a);
Py_DECREF(b);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
static PyObject *
dec_mpd_same_quantum(PyObject *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"other", "context", NULL};
PyObject *other;
PyObject *a, *b;
PyObject *result;
PyObject *context = Py_None;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O", kwlist,
&other, &context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CONTEXT_CHECK_VA(state, context);
CONVERT_BINOP_RAISE(&a, &b, self, other, context);
result = mpd_same_quantum(MPD(a), MPD(b)) ? incr_true() : incr_false();
Py_DECREF(a);
Py_DECREF(b);
return result;
}
/* Binary functions, optional context arg */
Dec_BinaryFuncVA(mpd_qand)
Dec_BinaryFuncVA(mpd_qor)
Dec_BinaryFuncVA(mpd_qxor)
Dec_BinaryFuncVA(mpd_qrotate)
Dec_BinaryFuncVA(mpd_qscaleb)
Dec_BinaryFuncVA(mpd_qshift)
static PyObject *
dec_mpd_qquantize(PyObject *v, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"exp", "rounding", "context", NULL};
PyObject *rounding = Py_None;
PyObject *context = Py_None;
PyObject *w, *a, *b;
PyObject *result;
uint32_t status = 0;
mpd_context_t workctx;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|OO", kwlist,
&w, &rounding, &context)) {
return NULL;
}
decimal_state *state = get_module_state_by_def(Py_TYPE(v));
CONTEXT_CHECK_VA(state, context);
workctx = *CTX(context);
if (rounding != Py_None) {
int round = getround(state, rounding);
if (round < 0) {
return NULL;
}
if (!mpd_qsetround(&workctx, round)) {
INTERNAL_ERROR_PTR("dec_mpd_qquantize"); /* GCOV_NOT_REACHED */
}
}
CONVERT_BINOP_RAISE(&a, &b, v, w, context);
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(a);
Py_DECREF(b);
return NULL;
}
mpd_qquantize(MPD(result), MPD(a), MPD(b), &workctx, &status);
Py_DECREF(a);
Py_DECREF(b);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
/* Special methods */
static PyObject *
dec_richcompare(PyObject *v, PyObject *w, int op)
{
PyObject *a;
PyObject *b;
PyObject *context;
uint32_t status = 0;
int a_issnan, b_issnan;
int r;
decimal_state *state = find_state_left_or_right(v, w);
#ifdef Py_DEBUG
assert(PyDec_Check(state, v));
#endif
CURRENT_CONTEXT(state, context);
CONVERT_BINOP_CMP(&a, &b, v, w, op, context);
a_issnan = mpd_issnan(MPD(a));
b_issnan = mpd_issnan(MPD(b));
r = mpd_qcmp(MPD(a), MPD(b), &status);
Py_DECREF(a);
Py_DECREF(b);
if (r == INT_MAX) {
/* sNaNs or op={le,ge,lt,gt} always signal. */
if (a_issnan || b_issnan || (op != Py_EQ && op != Py_NE)) {
if (dec_addstatus(context, status)) {
return NULL;
}
}
/* qNaN comparison with op={eq,ne} or comparison
* with InvalidOperation disabled. */
return (op == Py_NE) ? incr_true() : incr_false();
}
switch (op) {
case Py_EQ:
r = (r == 0);
break;
case Py_NE:
r = (r != 0);
break;
case Py_LE:
r = (r <= 0);
break;
case Py_GE:
r = (r >= 0);
break;
case Py_LT:
r = (r == -1);
break;
case Py_GT:
r = (r == 1);
break;
}
return PyBool_FromLong(r);
}
/* __ceil__ */
static PyObject *
dec_ceil(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *context;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CURRENT_CONTEXT(state, context);
return dec_as_long(self, context, MPD_ROUND_CEILING);
}
/* __complex__ */
static PyObject *
dec_complex(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *f;
double x;
f = PyDec_AsFloat(self);
if (f == NULL) {
return NULL;
}
x = PyFloat_AsDouble(f);
Py_DECREF(f);
if (x == -1.0 && PyErr_Occurred()) {
return NULL;
}
return PyComplex_FromDoubles(x, 0);
}
/* __copy__ and __deepcopy__ */
static PyObject *
dec_copy(PyObject *self, PyObject *dummy UNUSED)
{
return Py_NewRef(self);
}
/* __floor__ */
static PyObject *
dec_floor(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *context;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CURRENT_CONTEXT(state, context);
return dec_as_long(self, context, MPD_ROUND_FLOOR);
}
/* Always uses the module context */
static Py_hash_t
_dec_hash(PyDecObject *v)
{
#if defined(CONFIG_64) && _PyHASH_BITS == 61
/* 2**61 - 1 */
mpd_uint_t p_data[1] = {2305843009213693951ULL};
mpd_t p = {MPD_POS|MPD_STATIC|MPD_CONST_DATA, 0, 19, 1, 1, p_data};
/* Inverse of 10 modulo p */
mpd_uint_t inv10_p_data[1] = {2075258708292324556ULL};
mpd_t inv10_p = {MPD_POS|MPD_STATIC|MPD_CONST_DATA,
0, 19, 1, 1, inv10_p_data};
#elif defined(CONFIG_32) && _PyHASH_BITS == 31
/* 2**31 - 1 */
mpd_uint_t p_data[2] = {147483647UL, 2};
mpd_t p = {MPD_POS|MPD_STATIC|MPD_CONST_DATA, 0, 10, 2, 2, p_data};
/* Inverse of 10 modulo p */
mpd_uint_t inv10_p_data[2] = {503238553UL, 1};
mpd_t inv10_p = {MPD_POS|MPD_STATIC|MPD_CONST_DATA,
0, 10, 2, 2, inv10_p_data};
#else
#error "No valid combination of CONFIG_64, CONFIG_32 and _PyHASH_BITS"
#endif
const Py_hash_t py_hash_inf = 314159;
mpd_uint_t ten_data[1] = {10};
mpd_t ten = {MPD_POS|MPD_STATIC|MPD_CONST_DATA,
0, 2, 1, 1, ten_data};
Py_hash_t result;
mpd_t *exp_hash = NULL;
mpd_t *tmp = NULL;
mpd_ssize_t exp;
uint32_t status = 0;
mpd_context_t maxctx;
if (mpd_isspecial(MPD(v))) {
if (mpd_issnan(MPD(v))) {
PyErr_SetString(PyExc_TypeError,
"Cannot hash a signaling NaN value");
return -1;
}
else if (mpd_isnan(MPD(v))) {
return PyObject_GenericHash((PyObject *)v);
}
else {
return py_hash_inf * mpd_arith_sign(MPD(v));
}
}
mpd_maxcontext(&maxctx);
exp_hash = mpd_qnew();
if (exp_hash == NULL) {
goto malloc_error;
}
tmp = mpd_qnew();
if (tmp == NULL) {
goto malloc_error;
}
/*
* exp(v): exponent of v
* int(v): coefficient of v
*/
exp = MPD(v)->exp;
if (exp >= 0) {
/* 10**exp(v) % p */
mpd_qsset_ssize(tmp, exp, &maxctx, &status);
mpd_qpowmod(exp_hash, &ten, tmp, &p, &maxctx, &status);
}
else {
/* inv10_p**(-exp(v)) % p */
mpd_qsset_ssize(tmp, -exp, &maxctx, &status);
mpd_qpowmod(exp_hash, &inv10_p, tmp, &p, &maxctx, &status);
}
/* hash = (int(v) * exp_hash) % p */
if (!mpd_qcopy(tmp, MPD(v), &status)) {
goto malloc_error;
}
tmp->exp = 0;
mpd_set_positive(tmp);
maxctx.prec = MPD_MAX_PREC + 21;
maxctx.emax = MPD_MAX_EMAX + 21;
maxctx.emin = MPD_MIN_EMIN - 21;
mpd_qmul(tmp, tmp, exp_hash, &maxctx, &status);
mpd_qrem(tmp, tmp, &p, &maxctx, &status);
result = mpd_qget_ssize(tmp, &status);
result = mpd_ispositive(MPD(v)) ? result : -result;
result = (result == -1) ? -2 : result;
if (status != 0) {
if (status & MPD_Malloc_error) {
goto malloc_error;
}
else {
PyErr_SetString(PyExc_RuntimeError, /* GCOV_NOT_REACHED */
"dec_hash: internal error: please report"); /* GCOV_NOT_REACHED */
}
result = -1; /* GCOV_NOT_REACHED */
}
finish:
if (exp_hash) mpd_del(exp_hash);
if (tmp) mpd_del(tmp);
return result;
malloc_error:
PyErr_NoMemory();
result = -1;
goto finish;
}
static Py_hash_t
dec_hash(PyDecObject *self)
{
if (self->hash == -1) {
self->hash = _dec_hash(self);
}
return self->hash;
}
/* __reduce__ */
static PyObject *
dec_reduce(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *result, *str;
str = dec_str(self);
if (str == NULL) {
return NULL;
}
result = Py_BuildValue("O(O)", Py_TYPE(self), str);
Py_DECREF(str);
return result;
}
/* __sizeof__ */
static PyObject *
dec_sizeof(PyObject *v, PyObject *dummy UNUSED)
{
size_t res = _PyObject_SIZE(Py_TYPE(v));
if (mpd_isdynamic_data(MPD(v))) {
res += (size_t)MPD(v)->alloc * sizeof(mpd_uint_t);
}
return PyLong_FromSize_t(res);
}
/* __trunc__ */
static PyObject *
dec_trunc(PyObject *self, PyObject *dummy UNUSED)
{
PyObject *context;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
CURRENT_CONTEXT(state, context);
return dec_as_long(self, context, MPD_ROUND_DOWN);
}
/* real and imag */
static PyObject *
dec_real(PyObject *self, void *closure UNUSED)
{
return Py_NewRef(self);
}
static PyObject *
dec_imag(PyObject *self UNUSED, void *closure UNUSED)
{
PyObject *result;
decimal_state *state = get_module_state_by_def(Py_TYPE(self));
result = dec_alloc(state);
if (result == NULL) {
return NULL;
}
_dec_settriple(result, MPD_POS, 0, 0);
return result;
}
static PyGetSetDef dec_getsets [] =
{
{ "real", (getter)dec_real, NULL, NULL, NULL},
{ "imag", (getter)dec_imag, NULL, NULL, NULL},
{NULL}
};
static PyMethodDef dec_methods [] =
{
/* Unary arithmetic functions, optional context arg */
{ "exp", _PyCFunction_CAST(dec_mpd_qexp), METH_VARARGS|METH_KEYWORDS, doc_exp },
{ "ln", _PyCFunction_CAST(dec_mpd_qln), METH_VARARGS|METH_KEYWORDS, doc_ln },
{ "log10", _PyCFunction_CAST(dec_mpd_qlog10), METH_VARARGS|METH_KEYWORDS, doc_log10 },
{ "next_minus", _PyCFunction_CAST(dec_mpd_qnext_minus), METH_VARARGS|METH_KEYWORDS, doc_next_minus },
{ "next_plus", _PyCFunction_CAST(dec_mpd_qnext_plus), METH_VARARGS|METH_KEYWORDS, doc_next_plus },
{ "normalize", _PyCFunction_CAST(dec_mpd_qreduce), METH_VARARGS|METH_KEYWORDS, doc_normalize },
{ "to_integral", _PyCFunction_CAST(PyDec_ToIntegralValue), METH_VARARGS|METH_KEYWORDS, doc_to_integral },
{ "to_integral_exact", _PyCFunction_CAST(PyDec_ToIntegralExact), METH_VARARGS|METH_KEYWORDS, doc_to_integral_exact },
{ "to_integral_value", _PyCFunction_CAST(PyDec_ToIntegralValue), METH_VARARGS|METH_KEYWORDS, doc_to_integral_value },
{ "sqrt", _PyCFunction_CAST(dec_mpd_qsqrt), METH_VARARGS|METH_KEYWORDS, doc_sqrt },
/* Binary arithmetic functions, optional context arg */
{ "compare", _PyCFunction_CAST(dec_mpd_qcompare), METH_VARARGS|METH_KEYWORDS, doc_compare },
{ "compare_signal", _PyCFunction_CAST(dec_mpd_qcompare_signal), METH_VARARGS|METH_KEYWORDS, doc_compare_signal },
{ "max", _PyCFunction_CAST(dec_mpd_qmax), METH_VARARGS|METH_KEYWORDS, doc_max },
{ "max_mag", _PyCFunction_CAST(dec_mpd_qmax_mag), METH_VARARGS|METH_KEYWORDS, doc_max_mag },
{ "min", _PyCFunction_CAST(dec_mpd_qmin), METH_VARARGS|METH_KEYWORDS, doc_min },
{ "min_mag", _PyCFunction_CAST(dec_mpd_qmin_mag), METH_VARARGS|METH_KEYWORDS, doc_min_mag },
{ "next_toward", _PyCFunction_CAST(dec_mpd_qnext_toward), METH_VARARGS|METH_KEYWORDS, doc_next_toward },
{ "quantize", _PyCFunction_CAST(dec_mpd_qquantize), METH_VARARGS|METH_KEYWORDS, doc_quantize },
{ "remainder_near", _PyCFunction_CAST(dec_mpd_qrem_near), METH_VARARGS|METH_KEYWORDS, doc_remainder_near },
/* Ternary arithmetic functions, optional context arg */
{ "fma", _PyCFunction_CAST(dec_mpd_qfma), METH_VARARGS|METH_KEYWORDS, doc_fma },
/* Boolean functions, no context arg */
{ "is_canonical", dec_mpd_iscanonical, METH_NOARGS, doc_is_canonical },
{ "is_finite", dec_mpd_isfinite, METH_NOARGS, doc_is_finite },
{ "is_infinite", dec_mpd_isinfinite, METH_NOARGS, doc_is_infinite },
{ "is_nan", dec_mpd_isnan, METH_NOARGS, doc_is_nan },
{ "is_qnan", dec_mpd_isqnan, METH_NOARGS, doc_is_qnan },
{ "is_snan", dec_mpd_issnan, METH_NOARGS, doc_is_snan },
{ "is_signed", dec_mpd_issigned, METH_NOARGS, doc_is_signed },
{ "is_zero", dec_mpd_iszero, METH_NOARGS, doc_is_zero },
/* Boolean functions, optional context arg */
{ "is_normal", _PyCFunction_CAST(dec_mpd_isnormal), METH_VARARGS|METH_KEYWORDS, doc_is_normal },
{ "is_subnormal", _PyCFunction_CAST(dec_mpd_issubnormal), METH_VARARGS|METH_KEYWORDS, doc_is_subnormal },
/* Unary functions, no context arg */
{ "adjusted", dec_mpd_adjexp, METH_NOARGS, doc_adjusted },
{ "canonical", dec_canonical, METH_NOARGS, doc_canonical },
{ "conjugate", dec_conjugate, METH_NOARGS, doc_conjugate },
{ "radix", dec_mpd_radix, METH_NOARGS, doc_radix },
/* Unary functions, optional context arg for conversion errors */
{ "copy_abs", dec_mpd_qcopy_abs, METH_NOARGS, doc_copy_abs },
{ "copy_negate", dec_mpd_qcopy_negate, METH_NOARGS, doc_copy_negate },
/* Unary functions, optional context arg */
{ "logb", _PyCFunction_CAST(dec_mpd_qlogb), METH_VARARGS|METH_KEYWORDS, doc_logb },
{ "logical_invert", _PyCFunction_CAST(dec_mpd_qinvert), METH_VARARGS|METH_KEYWORDS, doc_logical_invert },
{ "number_class", _PyCFunction_CAST(dec_mpd_class), METH_VARARGS|METH_KEYWORDS, doc_number_class },
{ "to_eng_string", _PyCFunction_CAST(dec_mpd_to_eng), METH_VARARGS|METH_KEYWORDS, doc_to_eng_string },
/* Binary functions, optional context arg for conversion errors */
{ "compare_total", _PyCFunction_CAST(dec_mpd_compare_total), METH_VARARGS|METH_KEYWORDS, doc_compare_total },
{ "compare_total_mag", _PyCFunction_CAST(dec_mpd_compare_total_mag), METH_VARARGS|METH_KEYWORDS, doc_compare_total_mag },
{ "copy_sign", _PyCFunction_CAST(dec_mpd_qcopy_sign), METH_VARARGS|METH_KEYWORDS, doc_copy_sign },
{ "same_quantum", _PyCFunction_CAST(dec_mpd_same_quantum), METH_VARARGS|METH_KEYWORDS, doc_same_quantum },
/* Binary functions, optional context arg */
{ "logical_and", _PyCFunction_CAST(dec_mpd_qand), METH_VARARGS|METH_KEYWORDS, doc_logical_and },
{ "logical_or", _PyCFunction_CAST(dec_mpd_qor), METH_VARARGS|METH_KEYWORDS, doc_logical_or },
{ "logical_xor", _PyCFunction_CAST(dec_mpd_qxor), METH_VARARGS|METH_KEYWORDS, doc_logical_xor },
{ "rotate", _PyCFunction_CAST(dec_mpd_qrotate), METH_VARARGS|METH_KEYWORDS, doc_rotate },
{ "scaleb", _PyCFunction_CAST(dec_mpd_qscaleb), METH_VARARGS|METH_KEYWORDS, doc_scaleb },
{ "shift", _PyCFunction_CAST(dec_mpd_qshift), METH_VARARGS|METH_KEYWORDS, doc_shift },
/* Miscellaneous */
{ "from_float", dec_from_float, METH_O|METH_CLASS, doc_from_float },
{ "as_tuple", PyDec_AsTuple, METH_NOARGS, doc_as_tuple },
{ "as_integer_ratio", dec_as_integer_ratio, METH_NOARGS, doc_as_integer_ratio },
/* Special methods */
{ "__copy__", dec_copy, METH_NOARGS, NULL },
{ "__deepcopy__", dec_copy, METH_O, NULL },
{ "__format__", dec_format, METH_VARARGS, NULL },
{ "__reduce__", dec_reduce, METH_NOARGS, NULL },
{ "__round__", PyDec_Round, METH_VARARGS, NULL },
{ "__ceil__", dec_ceil, METH_NOARGS, NULL },
{ "__floor__", dec_floor, METH_NOARGS, NULL },
{ "__trunc__", dec_trunc, METH_NOARGS, NULL },
{ "__complex__", dec_complex, METH_NOARGS, NULL },
{ "__sizeof__", dec_sizeof, METH_NOARGS, NULL },
{ NULL, NULL, 1 }
};
static PyType_Slot dec_slots[] = {
{Py_tp_dealloc, dec_dealloc},
{Py_tp_getattro, PyObject_GenericGetAttr},
{Py_tp_traverse, dec_traverse},
{Py_tp_repr, dec_repr},
{Py_tp_hash, dec_hash},
{Py_tp_str, dec_str},
{Py_tp_doc, (void *)doc_decimal},
{Py_tp_richcompare, dec_richcompare},
{Py_tp_methods, dec_methods},
{Py_tp_getset, dec_getsets},
{Py_tp_new, dec_new},
// Number protocol
{Py_nb_add, nm_mpd_qadd},
{Py_nb_subtract, nm_mpd_qsub},
{Py_nb_multiply, nm_mpd_qmul},
{Py_nb_remainder, nm_mpd_qrem},
{Py_nb_divmod, nm_mpd_qdivmod},
{Py_nb_power, nm_mpd_qpow},
{Py_nb_negative, nm_mpd_qminus},
{Py_nb_positive, nm_mpd_qplus},
{Py_nb_absolute, nm_mpd_qabs},
{Py_nb_bool, nm_nonzero},
{Py_nb_int, nm_dec_as_long},
{Py_nb_float, PyDec_AsFloat},
{Py_nb_floor_divide, nm_mpd_qdivint},
{Py_nb_true_divide, nm_mpd_qdiv},
{0, NULL},
};
static PyType_Spec dec_spec = {
.name = "decimal.Decimal",
.basicsize = sizeof(PyDecObject),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE),
.slots = dec_slots,
};
/******************************************************************************/
/* Context Object, Part 2 */
/******************************************************************************/
/************************************************************************/
/* Macros for converting mpdecimal functions to Context methods */
/************************************************************************/
/* Boolean context method. */
#define DecCtx_BoolFunc(MPDFUNC) \
static PyObject * \
ctx_##MPDFUNC(PyObject *context, PyObject *v) \
{ \
PyObject *ret; \
PyObject *a; \
\
CONVERT_OP_RAISE(&a, v, context); \
\
ret = MPDFUNC(MPD(a), CTX(context)) ? incr_true() : incr_false(); \
Py_DECREF(a); \
return ret; \
}
/* Boolean context method. MPDFUNC does NOT use a context. */
#define DecCtx_BoolFunc_NO_CTX(MPDFUNC) \
static PyObject * \
ctx_##MPDFUNC(PyObject *context, PyObject *v) \
{ \
PyObject *ret; \
PyObject *a; \
\
CONVERT_OP_RAISE(&a, v, context); \
\
ret = MPDFUNC(MPD(a)) ? incr_true() : incr_false(); \
Py_DECREF(a); \
return ret; \
}
/* Unary context method. */
#define DecCtx_UnaryFunc(MPDFUNC) \
static PyObject * \
ctx_##MPDFUNC(PyObject *context, PyObject *v) \
{ \
PyObject *result, *a; \
uint32_t status = 0; \
\
CONVERT_OP_RAISE(&a, v, context); \
decimal_state *state = \
get_module_state_by_def(Py_TYPE(context)); \
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), CTX(context), &status); \
Py_DECREF(a); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/* Binary context method. */
#define DecCtx_BinaryFunc(MPDFUNC) \
static PyObject * \
ctx_##MPDFUNC(PyObject *context, PyObject *args) \
{ \
PyObject *v, *w; \
PyObject *a, *b; \
PyObject *result; \
uint32_t status = 0; \
\
if (!PyArg_ParseTuple(args, "OO", &v, &w)) { \
return NULL; \
} \
\
CONVERT_BINOP_RAISE(&a, &b, v, w, context); \
decimal_state *state = \
get_module_state_by_def(Py_TYPE(context)); \
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
Py_DECREF(b); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), MPD(b), CTX(context), &status); \
Py_DECREF(a); \
Py_DECREF(b); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/*
* Binary context method. The context is only used for conversion.
* The actual MPDFUNC does NOT take a context arg.
*/
#define DecCtx_BinaryFunc_NO_CTX(MPDFUNC) \
static PyObject * \
ctx_##MPDFUNC(PyObject *context, PyObject *args) \
{ \
PyObject *v, *w; \
PyObject *a, *b; \
PyObject *result; \
\
if (!PyArg_ParseTuple(args, "OO", &v, &w)) { \
return NULL; \
} \
\
CONVERT_BINOP_RAISE(&a, &b, v, w, context); \
decimal_state *state = \
get_module_state_by_def(Py_TYPE(context)); \
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
Py_DECREF(b); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), MPD(b)); \
Py_DECREF(a); \
Py_DECREF(b); \
\
return result; \
}
/* Ternary context method. */
#define DecCtx_TernaryFunc(MPDFUNC) \
static PyObject * \
ctx_##MPDFUNC(PyObject *context, PyObject *args) \
{ \
PyObject *v, *w, *x; \
PyObject *a, *b, *c; \
PyObject *result; \
uint32_t status = 0; \
\
if (!PyArg_ParseTuple(args, "OOO", &v, &w, &x)) { \
return NULL; \
} \
\
CONVERT_TERNOP_RAISE(&a, &b, &c, v, w, x, context); \
decimal_state *state = get_module_state_by_def(Py_TYPE(context)); \
if ((result = dec_alloc(state)) == NULL) { \
Py_DECREF(a); \
Py_DECREF(b); \
Py_DECREF(c); \
return NULL; \
} \
\
MPDFUNC(MPD(result), MPD(a), MPD(b), MPD(c), CTX(context), &status); \
Py_DECREF(a); \
Py_DECREF(b); \
Py_DECREF(c); \
if (dec_addstatus(context, status)) { \
Py_DECREF(result); \
return NULL; \
} \
\
return result; \
}
/* Unary arithmetic functions */
DecCtx_UnaryFunc(mpd_qabs)
DecCtx_UnaryFunc(mpd_qexp)
DecCtx_UnaryFunc(mpd_qln)
DecCtx_UnaryFunc(mpd_qlog10)
DecCtx_UnaryFunc(mpd_qminus)
DecCtx_UnaryFunc(mpd_qnext_minus)
DecCtx_UnaryFunc(mpd_qnext_plus)
DecCtx_UnaryFunc(mpd_qplus)
DecCtx_UnaryFunc(mpd_qreduce)
DecCtx_UnaryFunc(mpd_qround_to_int)
DecCtx_UnaryFunc(mpd_qround_to_intx)
DecCtx_UnaryFunc(mpd_qsqrt)
/* Binary arithmetic functions */
DecCtx_BinaryFunc(mpd_qadd)
DecCtx_BinaryFunc(mpd_qcompare)
DecCtx_BinaryFunc(mpd_qcompare_signal)
DecCtx_BinaryFunc(mpd_qdiv)
DecCtx_BinaryFunc(mpd_qdivint)
DecCtx_BinaryFunc(mpd_qmax)
DecCtx_BinaryFunc(mpd_qmax_mag)
DecCtx_BinaryFunc(mpd_qmin)
DecCtx_BinaryFunc(mpd_qmin_mag)
DecCtx_BinaryFunc(mpd_qmul)
DecCtx_BinaryFunc(mpd_qnext_toward)
DecCtx_BinaryFunc(mpd_qquantize)
DecCtx_BinaryFunc(mpd_qrem)
DecCtx_BinaryFunc(mpd_qrem_near)
DecCtx_BinaryFunc(mpd_qsub)
static PyObject *
ctx_mpd_qdivmod(PyObject *context, PyObject *args)
{
PyObject *v, *w;
PyObject *a, *b;
PyObject *q, *r;
uint32_t status = 0;
PyObject *ret;
if (!PyArg_ParseTuple(args, "OO", &v, &w)) {
return NULL;
}
CONVERT_BINOP_RAISE(&a, &b, v, w, context);
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
q = dec_alloc(state);
if (q == NULL) {
Py_DECREF(a);
Py_DECREF(b);
return NULL;
}
r = dec_alloc(state);
if (r == NULL) {
Py_DECREF(a);
Py_DECREF(b);
Py_DECREF(q);
return NULL;
}
mpd_qdivmod(MPD(q), MPD(r), MPD(a), MPD(b), CTX(context), &status);
Py_DECREF(a);
Py_DECREF(b);
if (dec_addstatus(context, status)) {
Py_DECREF(r);
Py_DECREF(q);
return NULL;
}
ret = PyTuple_Pack(2, q, r);
Py_DECREF(r);
Py_DECREF(q);
return ret;
}
/* Binary or ternary arithmetic functions */
static PyObject *
ctx_mpd_qpow(PyObject *context, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"a", "b", "modulo", NULL};
PyObject *base, *exp, *mod = Py_None;
PyObject *a, *b, *c = NULL;
PyObject *result;
uint32_t status = 0;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO|O", kwlist,
&base, &exp, &mod)) {
return NULL;
}
CONVERT_BINOP_RAISE(&a, &b, base, exp, context);
if (mod != Py_None) {
if (!convert_op(TYPE_ERR, &c, mod, context)) {
Py_DECREF(a);
Py_DECREF(b);
return c;
}
}
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(a);
Py_DECREF(b);
Py_XDECREF(c);
return NULL;
}
if (c == NULL) {
mpd_qpow(MPD(result), MPD(a), MPD(b),
CTX(context), &status);
}
else {
mpd_qpowmod(MPD(result), MPD(a), MPD(b), MPD(c),
CTX(context), &status);
Py_DECREF(c);
}
Py_DECREF(a);
Py_DECREF(b);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
/* Ternary arithmetic functions */
DecCtx_TernaryFunc(mpd_qfma)
/* No argument */
static PyObject *
ctx_mpd_radix(PyObject *context, PyObject *dummy)
{
return dec_mpd_radix(context, dummy);
}
/* Boolean functions: single decimal argument */
DecCtx_BoolFunc(mpd_isnormal)
DecCtx_BoolFunc(mpd_issubnormal)
DecCtx_BoolFunc_NO_CTX(mpd_isfinite)
DecCtx_BoolFunc_NO_CTX(mpd_isinfinite)
DecCtx_BoolFunc_NO_CTX(mpd_isnan)
DecCtx_BoolFunc_NO_CTX(mpd_isqnan)
DecCtx_BoolFunc_NO_CTX(mpd_issigned)
DecCtx_BoolFunc_NO_CTX(mpd_issnan)
DecCtx_BoolFunc_NO_CTX(mpd_iszero)
static PyObject *
ctx_iscanonical(PyObject *context, PyObject *v)
{
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
if (!PyDec_Check(state, v)) {
PyErr_SetString(PyExc_TypeError,
"argument must be a Decimal");
return NULL;
}
return mpd_iscanonical(MPD(v)) ? incr_true() : incr_false();
}
/* Functions with a single decimal argument */
static PyObject *
PyDecContext_Apply(PyObject *context, PyObject *v)
{
PyObject *result, *a;
CONVERT_OP_RAISE(&a, v, context);
result = dec_apply(a, context);
Py_DECREF(a);
return result;
}
static PyObject *
ctx_canonical(PyObject *context, PyObject *v)
{
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
if (!PyDec_Check(state, v)) {
PyErr_SetString(PyExc_TypeError,
"argument must be a Decimal");
return NULL;
}
return Py_NewRef(v);
}
static PyObject *
ctx_mpd_qcopy_abs(PyObject *context, PyObject *v)
{
PyObject *result, *a;
uint32_t status = 0;
CONVERT_OP_RAISE(&a, v, context);
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(a);
return NULL;
}
mpd_qcopy_abs(MPD(result), MPD(a), &status);
Py_DECREF(a);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
static PyObject *
ctx_copy_decimal(PyObject *context, PyObject *v)
{
PyObject *result;
CONVERT_OP_RAISE(&result, v, context);
return result;
}
static PyObject *
ctx_mpd_qcopy_negate(PyObject *context, PyObject *v)
{
PyObject *result, *a;
uint32_t status = 0;
CONVERT_OP_RAISE(&a, v, context);
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(a);
return NULL;
}
mpd_qcopy_negate(MPD(result), MPD(a), &status);
Py_DECREF(a);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
DecCtx_UnaryFunc(mpd_qlogb)
DecCtx_UnaryFunc(mpd_qinvert)
static PyObject *
ctx_mpd_class(PyObject *context, PyObject *v)
{
PyObject *a;
const char *cp;
CONVERT_OP_RAISE(&a, v, context);
cp = mpd_class(MPD(a), CTX(context));
Py_DECREF(a);
return PyUnicode_FromString(cp);
}
static PyObject *
ctx_mpd_to_sci(PyObject *context, PyObject *v)
{
PyObject *result;
PyObject *a;
mpd_ssize_t size;
char *s;
CONVERT_OP_RAISE(&a, v, context);
size = mpd_to_sci_size(&s, MPD(a), CtxCaps(context));
Py_DECREF(a);
if (size < 0) {
PyErr_NoMemory();
return NULL;
}
result = unicode_fromascii(s, size);
mpd_free(s);
return result;
}
static PyObject *
ctx_mpd_to_eng(PyObject *context, PyObject *v)
{
PyObject *result;
PyObject *a;
mpd_ssize_t size;
char *s;
CONVERT_OP_RAISE(&a, v, context);
size = mpd_to_eng_size(&s, MPD(a), CtxCaps(context));
Py_DECREF(a);
if (size < 0) {
PyErr_NoMemory();
return NULL;
}
result = unicode_fromascii(s, size);
mpd_free(s);
return result;
}
/* Functions with two decimal arguments */
DecCtx_BinaryFunc_NO_CTX(mpd_compare_total)
DecCtx_BinaryFunc_NO_CTX(mpd_compare_total_mag)
static PyObject *
ctx_mpd_qcopy_sign(PyObject *context, PyObject *args)
{
PyObject *v, *w;
PyObject *a, *b;
PyObject *result;
uint32_t status = 0;
if (!PyArg_ParseTuple(args, "OO", &v, &w)) {
return NULL;
}
CONVERT_BINOP_RAISE(&a, &b, v, w, context);
decimal_state *state = get_module_state_by_def(Py_TYPE(context));
result = dec_alloc(state);
if (result == NULL) {
Py_DECREF(a);
Py_DECREF(b);
return NULL;
}
mpd_qcopy_sign(MPD(result), MPD(a), MPD(b), &status);
Py_DECREF(a);
Py_DECREF(b);
if (dec_addstatus(context, status)) {
Py_DECREF(result);
return NULL;
}
return result;
}
DecCtx_BinaryFunc(mpd_qand)
DecCtx_BinaryFunc(mpd_qor)
DecCtx_BinaryFunc(mpd_qxor)
DecCtx_BinaryFunc(mpd_qrotate)
DecCtx_BinaryFunc(mpd_qscaleb)
DecCtx_BinaryFunc(mpd_qshift)
static PyObject *
ctx_mpd_same_quantum(PyObject *context, PyObject *args)
{
PyObject *v, *w;
PyObject *a, *b;
PyObject *result;
if (!PyArg_ParseTuple(args, "OO", &v, &w)) {
return NULL;
}
CONVERT_BINOP_RAISE(&a, &b, v, w, context);
result = mpd_same_quantum(MPD(a), MPD(b)) ? incr_true() : incr_false();
Py_DECREF(a);
Py_DECREF(b);
return result;
}
static PyMethodDef context_methods [] =
{
/* Unary arithmetic functions */
{ "abs", ctx_mpd_qabs, METH_O, doc_ctx_abs },
{ "exp", ctx_mpd_qexp, METH_O, doc_ctx_exp },
{ "ln", ctx_mpd_qln, METH_O, doc_ctx_ln },
{ "log10", ctx_mpd_qlog10, METH_O, doc_ctx_log10 },
{ "minus", ctx_mpd_qminus, METH_O, doc_ctx_minus },
{ "next_minus", ctx_mpd_qnext_minus, METH_O, doc_ctx_next_minus },
{ "next_plus", ctx_mpd_qnext_plus, METH_O, doc_ctx_next_plus },
{ "normalize", ctx_mpd_qreduce, METH_O, doc_ctx_normalize },
{ "plus", ctx_mpd_qplus, METH_O, doc_ctx_plus },
{ "to_integral", ctx_mpd_qround_to_int, METH_O, doc_ctx_to_integral },
{ "to_integral_exact", ctx_mpd_qround_to_intx, METH_O, doc_ctx_to_integral_exact },
{ "to_integral_value", ctx_mpd_qround_to_int, METH_O, doc_ctx_to_integral_value },
{ "sqrt", ctx_mpd_qsqrt, METH_O, doc_ctx_sqrt },
/* Binary arithmetic functions */
{ "add", ctx_mpd_qadd, METH_VARARGS, doc_ctx_add },
{ "compare", ctx_mpd_qcompare, METH_VARARGS, doc_ctx_compare },
{ "compare_signal", ctx_mpd_qcompare_signal, METH_VARARGS, doc_ctx_compare_signal },
{ "divide", ctx_mpd_qdiv, METH_VARARGS, doc_ctx_divide },
{ "divide_int", ctx_mpd_qdivint, METH_VARARGS, doc_ctx_divide_int },
{ "divmod", ctx_mpd_qdivmod, METH_VARARGS, doc_ctx_divmod },
{ "max", ctx_mpd_qmax, METH_VARARGS, doc_ctx_max },
{ "max_mag", ctx_mpd_qmax_mag, METH_VARARGS, doc_ctx_max_mag },
{ "min", ctx_mpd_qmin, METH_VARARGS, doc_ctx_min },
{ "min_mag", ctx_mpd_qmin_mag, METH_VARARGS, doc_ctx_min_mag },
{ "multiply", ctx_mpd_qmul, METH_VARARGS, doc_ctx_multiply },
{ "next_toward", ctx_mpd_qnext_toward, METH_VARARGS, doc_ctx_next_toward },
{ "quantize", ctx_mpd_qquantize, METH_VARARGS, doc_ctx_quantize },
{ "remainder", ctx_mpd_qrem, METH_VARARGS, doc_ctx_remainder },
{ "remainder_near", ctx_mpd_qrem_near, METH_VARARGS, doc_ctx_remainder_near },
{ "subtract", ctx_mpd_qsub, METH_VARARGS, doc_ctx_subtract },
/* Binary or ternary arithmetic functions */
{ "power", _PyCFunction_CAST(ctx_mpd_qpow), METH_VARARGS|METH_KEYWORDS, doc_ctx_power },
/* Ternary arithmetic functions */
{ "fma", ctx_mpd_qfma, METH_VARARGS, doc_ctx_fma },
/* No argument */
{ "Etiny", context_getetiny, METH_NOARGS, doc_ctx_Etiny },
{ "Etop", context_getetop, METH_NOARGS, doc_ctx_Etop },
{ "radix", ctx_mpd_radix, METH_NOARGS, doc_ctx_radix },
/* Boolean functions */
{ "is_canonical", ctx_iscanonical, METH_O, doc_ctx_is_canonical },
{ "is_finite", ctx_mpd_isfinite, METH_O, doc_ctx_is_finite },
{ "is_infinite", ctx_mpd_isinfinite, METH_O, doc_ctx_is_infinite },
{ "is_nan", ctx_mpd_isnan, METH_O, doc_ctx_is_nan },
{ "is_normal", ctx_mpd_isnormal, METH_O, doc_ctx_is_normal },
{ "is_qnan", ctx_mpd_isqnan, METH_O, doc_ctx_is_qnan },
{ "is_signed", ctx_mpd_issigned, METH_O, doc_ctx_is_signed },
{ "is_snan", ctx_mpd_issnan, METH_O, doc_ctx_is_snan },
{ "is_subnormal", ctx_mpd_issubnormal, METH_O, doc_ctx_is_subnormal },
{ "is_zero", ctx_mpd_iszero, METH_O, doc_ctx_is_zero },
/* Functions with a single decimal argument */
{ "_apply", PyDecContext_Apply, METH_O, NULL }, /* alias for apply */
#ifdef EXTRA_FUNCTIONALITY
{ "apply", PyDecContext_Apply, METH_O, doc_ctx_apply },
#endif
{ "canonical", ctx_canonical, METH_O, doc_ctx_canonical },
{ "copy_abs", ctx_mpd_qcopy_abs, METH_O, doc_ctx_copy_abs },
{ "copy_decimal", ctx_copy_decimal, METH_O, doc_ctx_copy_decimal },
{ "copy_negate", ctx_mpd_qcopy_negate, METH_O, doc_ctx_copy_negate },
{ "logb", ctx_mpd_qlogb, METH_O, doc_ctx_logb },
{ "logical_invert", ctx_mpd_qinvert, METH_O, doc_ctx_logical_invert },
{ "number_class", ctx_mpd_class, METH_O, doc_ctx_number_class },
{ "to_sci_string", ctx_mpd_to_sci, METH_O, doc_ctx_to_sci_string },
{ "to_eng_string", ctx_mpd_to_eng, METH_O, doc_ctx_to_eng_string },
/* Functions with two decimal arguments */
{ "compare_total", ctx_mpd_compare_total, METH_VARARGS, doc_ctx_compare_total },
{ "compare_total_mag", ctx_mpd_compare_total_mag, METH_VARARGS, doc_ctx_compare_total_mag },
{ "copy_sign", ctx_mpd_qcopy_sign, METH_VARARGS, doc_ctx_copy_sign },
{ "logical_and", ctx_mpd_qand, METH_VARARGS, doc_ctx_logical_and },
{ "logical_or", ctx_mpd_qor, METH_VARARGS, doc_ctx_logical_or },
{ "logical_xor", ctx_mpd_qxor, METH_VARARGS, doc_ctx_logical_xor },
{ "rotate", ctx_mpd_qrotate, METH_VARARGS, doc_ctx_rotate },
{ "same_quantum", ctx_mpd_same_quantum, METH_VARARGS, doc_ctx_same_quantum },
{ "scaleb", ctx_mpd_qscaleb, METH_VARARGS, doc_ctx_scaleb },
{ "shift", ctx_mpd_qshift, METH_VARARGS, doc_ctx_shift },
/* Set context values */
{ "clear_flags", context_clear_flags, METH_NOARGS, doc_ctx_clear_flags },
{ "clear_traps", context_clear_traps, METH_NOARGS, doc_ctx_clear_traps },
#ifdef CONFIG_32
/* Unsafe set functions with relaxed range checks */
{ "_unsafe_setprec", context_unsafe_setprec, METH_O, NULL },
{ "_unsafe_setemin", context_unsafe_setemin, METH_O, NULL },
{ "_unsafe_setemax", context_unsafe_setemax, METH_O, NULL },
#endif
/* Miscellaneous */
{ "__copy__", (PyCFunction)context_copy, METH_NOARGS, NULL },
{ "__reduce__", context_reduce, METH_NOARGS, NULL },
{ "copy", (PyCFunction)context_copy, METH_NOARGS, doc_ctx_copy },
{ "create_decimal", ctx_create_decimal, METH_VARARGS, doc_ctx_create_decimal },
{ "create_decimal_from_float", ctx_from_float, METH_O, doc_ctx_create_decimal_from_float },
{ NULL, NULL, 1 }
};
static PyType_Slot context_slots[] = {
{Py_tp_dealloc, context_dealloc},
{Py_tp_traverse, context_traverse},
{Py_tp_clear, context_clear},
{Py_tp_repr, context_repr},
{Py_tp_getattro, context_getattr},
{Py_tp_setattro, context_setattr},
{Py_tp_doc, (void *)doc_context},
{Py_tp_methods, context_methods},
{Py_tp_getset, context_getsets},
{Py_tp_init, context_init},
{Py_tp_new, context_new},
{0, NULL},
};
static PyType_Spec context_spec = {
.name = "decimal.Context",
.basicsize = sizeof(PyDecContextObject),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_IMMUTABLETYPE),
.slots = context_slots,
};
static PyMethodDef _decimal_methods [] =
{
{ "getcontext", (PyCFunction)PyDec_GetCurrentContext, METH_NOARGS, doc_getcontext},
{ "setcontext", (PyCFunction)PyDec_SetCurrentContext, METH_O, doc_setcontext},
{ "localcontext", _PyCFunction_CAST(ctxmanager_new), METH_VARARGS|METH_KEYWORDS, doc_localcontext},
#ifdef EXTRA_FUNCTIONALITY
{ "IEEEContext", (PyCFunction)ieee_context, METH_O, doc_ieee_context},
#endif
{ NULL, NULL, 1, NULL }
};
struct ssize_constmap { const char *name; mpd_ssize_t val; };
static struct ssize_constmap ssize_constants [] = {
{"MAX_PREC", MPD_MAX_PREC},
{"MAX_EMAX", MPD_MAX_EMAX},
{"MIN_EMIN", MPD_MIN_EMIN},
{"MIN_ETINY", MPD_MIN_ETINY},
{NULL}
};
struct int_constmap { const char *name; int val; };
static struct int_constmap int_constants [] = {
/* int constants */
#ifdef EXTRA_FUNCTIONALITY
{"DECIMAL32", MPD_DECIMAL32},
{"DECIMAL64", MPD_DECIMAL64},
{"DECIMAL128", MPD_DECIMAL128},
{"IEEE_CONTEXT_MAX_BITS", MPD_IEEE_CONTEXT_MAX_BITS},
/* int condition flags */
{"DecClamped", MPD_Clamped},
{"DecConversionSyntax", MPD_Conversion_syntax},
{"DecDivisionByZero", MPD_Division_by_zero},
{"DecDivisionImpossible", MPD_Division_impossible},
{"DecDivisionUndefined", MPD_Division_undefined},
{"DecFpuError", MPD_Fpu_error},
{"DecInexact", MPD_Inexact},
{"DecInvalidContext", MPD_Invalid_context},
{"DecInvalidOperation", MPD_Invalid_operation},
{"DecIEEEInvalidOperation", MPD_IEEE_Invalid_operation},
{"DecMallocError", MPD_Malloc_error},
{"DecFloatOperation", MPD_Float_operation},
{"DecOverflow", MPD_Overflow},
{"DecRounded", MPD_Rounded},
{"DecSubnormal", MPD_Subnormal},
{"DecUnderflow", MPD_Underflow},
{"DecErrors", MPD_Errors},
{"DecTraps", MPD_Traps},
#endif
{NULL}
};
#define CHECK_INT(expr) \
do { if ((expr) < 0) goto error; } while (0)
#define ASSIGN_PTR(result, expr) \
do { result = (expr); if (result == NULL) goto error; } while (0)
#define CHECK_PTR(expr) \
do { if ((expr) == NULL) goto error; } while (0)
static PyCFunction
cfunc_noargs(PyTypeObject *t, const char *name)
{
struct PyMethodDef *m;
if (t->tp_methods == NULL) {
goto error;
}
for (m = t->tp_methods; m->ml_name != NULL; m++) {
if (strcmp(name, m->ml_name) == 0) {
if (!(m->ml_flags & METH_NOARGS)) {
goto error;
}
return m->ml_meth;
}
}
error:
PyErr_Format(PyExc_RuntimeError,
"internal error: could not find method %s", name);
return NULL;
}
static int minalloc_is_set = 0;
static int
_decimal_exec(PyObject *m)
{
PyObject *numbers = NULL;
PyObject *Number = NULL;
PyObject *collections = NULL;
PyObject *collections_abc = NULL;
PyObject *MutableMapping = NULL;
PyObject *obj = NULL;
DecCondMap *cm;
struct ssize_constmap *ssize_cm;
struct int_constmap *int_cm;
int i;
/* Init libmpdec */
mpd_traphandler = dec_traphandler;
mpd_mallocfunc = PyMem_Malloc;
mpd_reallocfunc = PyMem_Realloc;
mpd_callocfunc = mpd_callocfunc_em;
mpd_free = PyMem_Free;
/* Suppress the warning caused by multi-phase initialization */
if (!minalloc_is_set) {
mpd_setminalloc(_Py_DEC_MINALLOC);
minalloc_is_set = 1;
}
decimal_state *state = get_module_state(m);
/* Init external C-API functions */
state->_py_long_multiply = PyLong_Type.tp_as_number->nb_multiply;
state->_py_long_floor_divide = PyLong_Type.tp_as_number->nb_floor_divide;
state->_py_long_power = PyLong_Type.tp_as_number->nb_power;
state->_py_float_abs = PyFloat_Type.tp_as_number->nb_absolute;
ASSIGN_PTR(state->_py_float_as_integer_ratio,
cfunc_noargs(&PyFloat_Type, "as_integer_ratio"));
ASSIGN_PTR(state->_py_long_bit_length,
cfunc_noargs(&PyLong_Type, "bit_length"));
/* Init types */
#define CREATE_TYPE(mod, tp, spec) do { \
tp = (PyTypeObject *)PyType_FromMetaclass(NULL, mod, spec, NULL); \
CHECK_PTR(tp); \
} while (0)
CREATE_TYPE(m, state->PyDec_Type, &dec_spec);
CREATE_TYPE(m, state->PyDecContext_Type, &context_spec);
CREATE_TYPE(m, state->PyDecContextManager_Type, &ctxmanager_spec);
CREATE_TYPE(m, state->PyDecSignalDictMixin_Type, &signaldict_spec);
#undef CREATE_TYPE
ASSIGN_PTR(obj, PyUnicode_FromString("decimal"));
CHECK_INT(PyDict_SetItemString(state->PyDec_Type->tp_dict, "__module__", obj));
CHECK_INT(PyDict_SetItemString(state->PyDecContext_Type->tp_dict,
"__module__", obj));
Py_CLEAR(obj);
/* Numeric abstract base classes */
ASSIGN_PTR(numbers, PyImport_ImportModule("numbers"));
ASSIGN_PTR(Number, PyObject_GetAttrString(numbers, "Number"));
/* Register Decimal with the Number abstract base class */
ASSIGN_PTR(obj, PyObject_CallMethod(Number, "register", "(O)",
(PyObject *)state->PyDec_Type));
Py_CLEAR(obj);
/* Rational is a global variable used for fraction comparisons. */
ASSIGN_PTR(state->Rational, PyObject_GetAttrString(numbers, "Rational"));
/* Done with numbers, Number */
Py_CLEAR(numbers);
Py_CLEAR(Number);
/* DecimalTuple */
ASSIGN_PTR(collections, PyImport_ImportModule("collections"));
ASSIGN_PTR(state->DecimalTuple, (PyTypeObject *)PyObject_CallMethod(collections,
"namedtuple", "(ss)", "DecimalTuple",
"sign digits exponent"));
ASSIGN_PTR(obj, PyUnicode_FromString("decimal"));
CHECK_INT(PyDict_SetItemString(state->DecimalTuple->tp_dict, "__module__", obj));
Py_CLEAR(obj);
/* MutableMapping */
ASSIGN_PTR(collections_abc, PyImport_ImportModule("collections.abc"));
ASSIGN_PTR(MutableMapping, PyObject_GetAttrString(collections_abc,
"MutableMapping"));
/* Create SignalDict type */
ASSIGN_PTR(state->PyDecSignalDict_Type,
(PyTypeObject *)PyObject_CallFunction(
(PyObject *)&PyType_Type, "s(OO){}",
"SignalDict", state->PyDecSignalDictMixin_Type,
MutableMapping));
/* Done with collections, MutableMapping */
Py_CLEAR(collections);
Py_CLEAR(collections_abc);
Py_CLEAR(MutableMapping);
/* For format specifiers not yet supported by libmpdec */
state->PyDecimal = NULL;
/* Add types to the module */
CHECK_INT(PyModule_AddType(m, state->PyDec_Type));
CHECK_INT(PyModule_AddType(m, state->PyDecContext_Type));
CHECK_INT(PyModule_AddType(m, state->DecimalTuple));
/* Create top level exception */
ASSIGN_PTR(state->DecimalException, PyErr_NewException(
"decimal.DecimalException",
PyExc_ArithmeticError, NULL));
CHECK_INT(PyModule_AddType(m, (PyTypeObject *)state->DecimalException));
/* Create signal tuple */
ASSIGN_PTR(state->SignalTuple, PyTuple_New(SIGNAL_MAP_LEN));
/* Add exceptions that correspond to IEEE signals */
ASSIGN_PTR(state->signal_map, dec_cond_map_init(signal_map_template,
sizeof(signal_map_template)));
for (i = SIGNAL_MAP_LEN-1; i >= 0; i--) {
PyObject *base;
cm = state->signal_map + i;
switch (cm->flag) {
case MPD_Float_operation:
base = PyTuple_Pack(2, state->DecimalException, PyExc_TypeError);
break;
case MPD_Division_by_zero:
base = PyTuple_Pack(2, state->DecimalException,
PyExc_ZeroDivisionError);
break;
case MPD_Overflow:
base = PyTuple_Pack(2, state->signal_map[INEXACT].ex,
state->signal_map[ROUNDED].ex);
break;
case MPD_Underflow:
base = PyTuple_Pack(3, state->signal_map[INEXACT].ex,
state->signal_map[ROUNDED].ex,
state->signal_map[SUBNORMAL].ex);
break;
default:
base = PyTuple_Pack(1, state->DecimalException);
break;
}
if (base == NULL) {
goto error; /* GCOV_NOT_REACHED */
}
ASSIGN_PTR(cm->ex, PyErr_NewException(cm->fqname, base, NULL));
Py_DECREF(base);
/* add to module */
CHECK_INT(PyModule_AddObjectRef(m, cm->name, cm->ex));
/* add to signal tuple */
PyTuple_SET_ITEM(state->SignalTuple, i, Py_NewRef(cm->ex));
}
/*
* Unfortunately, InvalidOperation is a signal that comprises
* several conditions, including InvalidOperation! Naming the
* signal IEEEInvalidOperation would prevent the confusion.
*/
ASSIGN_PTR(state->cond_map, dec_cond_map_init(cond_map_template,
sizeof(cond_map_template)));
state->cond_map[0].ex = state->signal_map[0].ex;
/* Add remaining exceptions, inherit from InvalidOperation */
for (cm = state->cond_map+1; cm->name != NULL; cm++) {
PyObject *base;
if (cm->flag == MPD_Division_undefined) {
base = PyTuple_Pack(2, state->signal_map[0].ex, PyExc_ZeroDivisionError);
}
else {
base = PyTuple_Pack(1, state->signal_map[0].ex);
}
if (base == NULL) {
goto error; /* GCOV_NOT_REACHED */
}
ASSIGN_PTR(cm->ex, PyErr_NewException(cm->fqname, base, NULL));
Py_DECREF(base);
CHECK_INT(PyModule_AddObjectRef(m, cm->name, cm->ex));
}
/* Init default context template first */
ASSIGN_PTR(state->default_context_template,
PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL));
CHECK_INT(PyModule_AddObjectRef(m, "DefaultContext",
state->default_context_template));
#ifndef WITH_DECIMAL_CONTEXTVAR
ASSIGN_PTR(state->tls_context_key,
PyUnicode_FromString("___DECIMAL_CTX__"));
CHECK_INT(PyModule_AddObjectRef(m, "HAVE_CONTEXTVAR", Py_False));
#else
ASSIGN_PTR(state->current_context_var, PyContextVar_New("decimal_context", NULL));
CHECK_INT(PyModule_AddObjectRef(m, "HAVE_CONTEXTVAR", Py_True));
#endif
CHECK_INT(PyModule_AddObjectRef(m, "HAVE_THREADS", Py_True));
/* Init basic context template */
ASSIGN_PTR(state->basic_context_template,
PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL));
init_basic_context(state->basic_context_template);
CHECK_INT(PyModule_AddObjectRef(m, "BasicContext",
state->basic_context_template));
/* Init extended context template */
ASSIGN_PTR(state->extended_context_template,
PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL));
init_extended_context(state->extended_context_template);
CHECK_INT(PyModule_AddObjectRef(m, "ExtendedContext",
state->extended_context_template));
/* Init mpd_ssize_t constants */
for (ssize_cm = ssize_constants; ssize_cm->name != NULL; ssize_cm++) {
CHECK_INT(PyModule_Add(m, ssize_cm->name,
PyLong_FromSsize_t(ssize_cm->val)));
}
/* Init int constants */
for (int_cm = int_constants; int_cm->name != NULL; int_cm++) {
CHECK_INT(PyModule_AddIntConstant(m, int_cm->name,
int_cm->val));
}
/* Init string constants */
for (i = 0; i < _PY_DEC_ROUND_GUARD; i++) {
ASSIGN_PTR(state->round_map[i], PyUnicode_InternFromString(mpd_round_string[i]));
CHECK_INT(PyModule_AddObjectRef(m, mpd_round_string[i], state->round_map[i]));
}
/* Add specification version number */
CHECK_INT(PyModule_AddStringConstant(m, "__version__", "1.70"));
CHECK_INT(PyModule_AddStringConstant(m, "__libmpdec_version__", mpd_version()));
return 0;
error:
Py_CLEAR(obj); /* GCOV_NOT_REACHED */
Py_CLEAR(numbers); /* GCOV_NOT_REACHED */
Py_CLEAR(Number); /* GCOV_NOT_REACHED */
Py_CLEAR(collections); /* GCOV_NOT_REACHED */
Py_CLEAR(collections_abc); /* GCOV_NOT_REACHED */
Py_CLEAR(MutableMapping); /* GCOV_NOT_REACHED */
return -1;
}
static int
decimal_traverse(PyObject *module, visitproc visit, void *arg)
{
decimal_state *state = get_module_state(module);
Py_VISIT(state->PyDecContextManager_Type);
Py_VISIT(state->PyDecContext_Type);
Py_VISIT(state->PyDecSignalDictMixin_Type);
Py_VISIT(state->PyDec_Type);
Py_VISIT(state->PyDecSignalDict_Type);
Py_VISIT(state->DecimalTuple);
Py_VISIT(state->DecimalException);
#ifndef WITH_DECIMAL_CONTEXTVAR
Py_VISIT(state->tls_context_key);
Py_VISIT(state->cached_context);
#else
Py_VISIT(state->current_context_var);
#endif
Py_VISIT(state->default_context_template);
Py_VISIT(state->basic_context_template);
Py_VISIT(state->extended_context_template);
Py_VISIT(state->Rational);
Py_VISIT(state->SignalTuple);
return 0;
}
static int
decimal_clear(PyObject *module)
{
decimal_state *state = get_module_state(module);
Py_CLEAR(state->PyDecContextManager_Type);
Py_CLEAR(state->PyDecContext_Type);
Py_CLEAR(state->PyDecSignalDictMixin_Type);
Py_CLEAR(state->PyDec_Type);
Py_CLEAR(state->PyDecSignalDict_Type);
Py_CLEAR(state->DecimalTuple);
Py_CLEAR(state->DecimalException);
#ifndef WITH_DECIMAL_CONTEXTVAR
Py_CLEAR(state->tls_context_key);
Py_CLEAR(state->cached_context);
#else
Py_CLEAR(state->current_context_var);
#endif
Py_CLEAR(state->default_context_template);
Py_CLEAR(state->basic_context_template);
Py_CLEAR(state->extended_context_template);
Py_CLEAR(state->Rational);
Py_CLEAR(state->SignalTuple);
Py_CLEAR(state->PyDecimal);
PyMem_Free(state->signal_map);
PyMem_Free(state->cond_map);
return 0;
}
static void
decimal_free(void *module)
{
(void)decimal_clear((PyObject *)module);
}
static struct PyModuleDef_Slot _decimal_slots[] = {
{Py_mod_exec, _decimal_exec},
{Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
{Py_mod_gil, Py_MOD_GIL_NOT_USED},
{0, NULL},
};
static struct PyModuleDef _decimal_module = {
PyModuleDef_HEAD_INIT,
.m_name = "decimal",
.m_doc = doc__decimal,
.m_size = sizeof(decimal_state),
.m_methods = _decimal_methods,
.m_slots = _decimal_slots,
.m_traverse = decimal_traverse,
.m_clear = decimal_clear,
.m_free = decimal_free,
};
PyMODINIT_FUNC
PyInit__decimal(void)
{
return PyModuleDef_Init(&_decimal_module);
}