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Commit aad3093a authored by WenmuZhou's avatar WenmuZhou
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/*
pybind11/pybind11.h: Main header file of the C++11 python
binding generator library
Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#pragma once
#if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable: 4100) // warning C4100: Unreferenced formal parameter
# pragma warning(disable: 4127) // warning C4127: Conditional expression is constant
# pragma warning(disable: 4512) // warning C4512: Assignment operator was implicitly defined as deleted
# pragma warning(disable: 4800) // warning C4800: 'int': forcing value to bool 'true' or 'false' (performance warning)
# pragma warning(disable: 4996) // warning C4996: The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name
# pragma warning(disable: 4702) // warning C4702: unreachable code
# pragma warning(disable: 4522) // warning C4522: multiple assignment operators specified
#elif defined(__INTEL_COMPILER)
# pragma warning(push)
# pragma warning(disable: 68) // integer conversion resulted in a change of sign
# pragma warning(disable: 186) // pointless comparison of unsigned integer with zero
# pragma warning(disable: 878) // incompatible exception specifications
# pragma warning(disable: 1334) // the "template" keyword used for syntactic disambiguation may only be used within a template
# pragma warning(disable: 1682) // implicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
# pragma warning(disable: 1875) // offsetof applied to non-POD (Plain Old Data) types is nonstandard
# pragma warning(disable: 2196) // warning #2196: routine is both "inline" and "noinline"
#elif defined(__GNUG__) && !defined(__clang__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wunused-but-set-parameter"
# pragma GCC diagnostic ignored "-Wunused-but-set-variable"
# pragma GCC diagnostic ignored "-Wmissing-field-initializers"
# pragma GCC diagnostic ignored "-Wstrict-aliasing"
# pragma GCC diagnostic ignored "-Wattributes"
# if __GNUC__ >= 7
# pragma GCC diagnostic ignored "-Wnoexcept-type"
# endif
#endif
#include "attr.h"
#include "options.h"
#include "class_support.h"
NAMESPACE_BEGIN(pybind11)
/// Wraps an arbitrary C++ function/method/lambda function/.. into a callable Python object
class cpp_function : public function {
public:
cpp_function() { }
/// Construct a cpp_function from a vanilla function pointer
template <typename Return, typename... Args, typename... Extra>
cpp_function(Return (*f)(Args...), const Extra&... extra) {
initialize(f, f, extra...);
}
/// Construct a cpp_function from a lambda function (possibly with internal state)
template <typename Func, typename... Extra, typename = detail::enable_if_t<
detail::satisfies_none_of<
detail::remove_reference_t<Func>,
std::is_function, std::is_pointer, std::is_member_pointer
>::value>
>
cpp_function(Func &&f, const Extra&... extra) {
using FuncType = typename detail::remove_class<decltype(&detail::remove_reference_t<Func>::operator())>::type;
initialize(std::forward<Func>(f),
(FuncType *) nullptr, extra...);
}
/// Construct a cpp_function from a class method (non-const)
template <typename Return, typename Class, typename... Arg, typename... Extra>
cpp_function(Return (Class::*f)(Arg...), const Extra&... extra) {
initialize([f](Class *c, Arg... args) -> Return { return (c->*f)(args...); },
(Return (*) (Class *, Arg...)) nullptr, extra...);
}
/// Construct a cpp_function from a class method (const)
template <typename Return, typename Class, typename... Arg, typename... Extra>
cpp_function(Return (Class::*f)(Arg...) const, const Extra&... extra) {
initialize([f](const Class *c, Arg... args) -> Return { return (c->*f)(args...); },
(Return (*)(const Class *, Arg ...)) nullptr, extra...);
}
/// Return the function name
object name() const { return attr("__name__"); }
protected:
/// Space optimization: don't inline this frequently instantiated fragment
PYBIND11_NOINLINE detail::function_record *make_function_record() {
return new detail::function_record();
}
/// Special internal constructor for functors, lambda functions, etc.
template <typename Func, typename Return, typename... Args, typename... Extra>
void initialize(Func &&f, Return (*)(Args...), const Extra&... extra) {
struct capture { detail::remove_reference_t<Func> f; };
/* Store the function including any extra state it might have (e.g. a lambda capture object) */
auto rec = make_function_record();
/* Store the capture object directly in the function record if there is enough space */
if (sizeof(capture) <= sizeof(rec->data)) {
/* Without these pragmas, GCC warns that there might not be
enough space to use the placement new operator. However, the
'if' statement above ensures that this is the case. */
#if defined(__GNUG__) && !defined(__clang__) && __GNUC__ >= 6
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wplacement-new"
#endif
new ((capture *) &rec->data) capture { std::forward<Func>(f) };
#if defined(__GNUG__) && !defined(__clang__) && __GNUC__ >= 6
# pragma GCC diagnostic pop
#endif
if (!std::is_trivially_destructible<Func>::value)
rec->free_data = [](detail::function_record *r) { ((capture *) &r->data)->~capture(); };
} else {
rec->data[0] = new capture { std::forward<Func>(f) };
rec->free_data = [](detail::function_record *r) { delete ((capture *) r->data[0]); };
}
/* Type casters for the function arguments and return value */
using cast_in = detail::argument_loader<Args...>;
using cast_out = detail::make_caster<
detail::conditional_t<std::is_void<Return>::value, detail::void_type, Return>
>;
static_assert(detail::expected_num_args<Extra...>(sizeof...(Args), cast_in::has_args, cast_in::has_kwargs),
"The number of argument annotations does not match the number of function arguments");
/* Dispatch code which converts function arguments and performs the actual function call */
rec->impl = [](detail::function_call &call) -> handle {
cast_in args_converter;
/* Try to cast the function arguments into the C++ domain */
if (!args_converter.load_args(call))
return PYBIND11_TRY_NEXT_OVERLOAD;
/* Invoke call policy pre-call hook */
detail::process_attributes<Extra...>::precall(call);
/* Get a pointer to the capture object */
auto data = (sizeof(capture) <= sizeof(call.func.data)
? &call.func.data : call.func.data[0]);
capture *cap = const_cast<capture *>(reinterpret_cast<const capture *>(data));
/* Override policy for rvalues -- usually to enforce rvp::move on an rvalue */
const auto policy = detail::return_value_policy_override<Return>::policy(call.func.policy);
/* Function scope guard -- defaults to the compile-to-nothing `void_type` */
using Guard = detail::extract_guard_t<Extra...>;
/* Perform the function call */
handle result = cast_out::cast(
std::move(args_converter).template call<Return, Guard>(cap->f), policy, call.parent);
/* Invoke call policy post-call hook */
detail::process_attributes<Extra...>::postcall(call, result);
return result;
};
/* Process any user-provided function attributes */
detail::process_attributes<Extra...>::init(extra..., rec);
/* Generate a readable signature describing the function's arguments and return value types */
using detail::descr; using detail::_;
PYBIND11_DESCR signature = _("(") + cast_in::arg_names() + _(") -> ") + cast_out::name();
/* Register the function with Python from generic (non-templated) code */
initialize_generic(rec, signature.text(), signature.types(), sizeof...(Args));
if (cast_in::has_args) rec->has_args = true;
if (cast_in::has_kwargs) rec->has_kwargs = true;
/* Stash some additional information used by an important optimization in 'functional.h' */
using FunctionType = Return (*)(Args...);
constexpr bool is_function_ptr =
std::is_convertible<Func, FunctionType>::value &&
sizeof(capture) == sizeof(void *);
if (is_function_ptr) {
rec->is_stateless = true;
rec->data[1] = const_cast<void *>(reinterpret_cast<const void *>(&typeid(FunctionType)));
}
}
/// Register a function call with Python (generic non-templated code goes here)
void initialize_generic(detail::function_record *rec, const char *text,
const std::type_info *const *types, size_t args) {
/* Create copies of all referenced C-style strings */
rec->name = strdup(rec->name ? rec->name : "");
if (rec->doc) rec->doc = strdup(rec->doc);
for (auto &a: rec->args) {
if (a.name)
a.name = strdup(a.name);
if (a.descr)
a.descr = strdup(a.descr);
else if (a.value)
a.descr = strdup(a.value.attr("__repr__")().cast<std::string>().c_str());
}
/* Generate a proper function signature */
std::string signature;
size_t type_depth = 0, char_index = 0, type_index = 0, arg_index = 0;
while (true) {
char c = text[char_index++];
if (c == '\0')
break;
if (c == '{') {
// Write arg name for everything except *args, **kwargs and return type.
if (type_depth == 0 && text[char_index] != '*' && arg_index < args) {
if (!rec->args.empty() && rec->args[arg_index].name) {
signature += rec->args[arg_index].name;
} else if (arg_index == 0 && rec->is_method) {
signature += "self";
} else {
signature += "arg" + std::to_string(arg_index - (rec->is_method ? 1 : 0));
}
signature += ": ";
}
++type_depth;
} else if (c == '}') {
--type_depth;
if (type_depth == 0) {
if (arg_index < rec->args.size() && rec->args[arg_index].descr) {
signature += "=";
signature += rec->args[arg_index].descr;
}
arg_index++;
}
} else if (c == '%') {
const std::type_info *t = types[type_index++];
if (!t)
pybind11_fail("Internal error while parsing type signature (1)");
if (auto tinfo = detail::get_type_info(*t)) {
#if defined(PYPY_VERSION)
signature += handle((PyObject *) tinfo->type)
.attr("__module__")
.cast<std::string>() + ".";
#endif
signature += tinfo->type->tp_name;
} else {
std::string tname(t->name());
detail::clean_type_id(tname);
signature += tname;
}
} else {
signature += c;
}
}
if (type_depth != 0 || types[type_index] != nullptr)
pybind11_fail("Internal error while parsing type signature (2)");
#if !defined(PYBIND11_CONSTEXPR_DESCR)
delete[] types;
delete[] text;
#endif
#if PY_MAJOR_VERSION < 3
if (strcmp(rec->name, "__next__") == 0) {
std::free(rec->name);
rec->name = strdup("next");
} else if (strcmp(rec->name, "__bool__") == 0) {
std::free(rec->name);
rec->name = strdup("__nonzero__");
}
#endif
rec->signature = strdup(signature.c_str());
rec->args.shrink_to_fit();
rec->is_constructor = !strcmp(rec->name, "__init__") || !strcmp(rec->name, "__setstate__");
rec->nargs = (std::uint16_t) args;
if (rec->sibling && PYBIND11_INSTANCE_METHOD_CHECK(rec->sibling.ptr()))
rec->sibling = PYBIND11_INSTANCE_METHOD_GET_FUNCTION(rec->sibling.ptr());
detail::function_record *chain = nullptr, *chain_start = rec;
if (rec->sibling) {
if (PyCFunction_Check(rec->sibling.ptr())) {
auto rec_capsule = reinterpret_borrow<capsule>(PyCFunction_GET_SELF(rec->sibling.ptr()));
chain = (detail::function_record *) rec_capsule;
/* Never append a method to an overload chain of a parent class;
instead, hide the parent's overloads in this case */
if (!chain->scope.is(rec->scope))
chain = nullptr;
}
// Don't trigger for things like the default __init__, which are wrapper_descriptors that we are intentionally replacing
else if (!rec->sibling.is_none() && rec->name[0] != '_')
pybind11_fail("Cannot overload existing non-function object \"" + std::string(rec->name) +
"\" with a function of the same name");
}
if (!chain) {
/* No existing overload was found, create a new function object */
rec->def = new PyMethodDef();
std::memset(rec->def, 0, sizeof(PyMethodDef));
rec->def->ml_name = rec->name;
rec->def->ml_meth = reinterpret_cast<PyCFunction>(*dispatcher);
rec->def->ml_flags = METH_VARARGS | METH_KEYWORDS;
capsule rec_capsule(rec, [](void *ptr) {
destruct((detail::function_record *) ptr);
});
object scope_module;
if (rec->scope) {
if (hasattr(rec->scope, "__module__")) {
scope_module = rec->scope.attr("__module__");
} else if (hasattr(rec->scope, "__name__")) {
scope_module = rec->scope.attr("__name__");
}
}
m_ptr = PyCFunction_NewEx(rec->def, rec_capsule.ptr(), scope_module.ptr());
if (!m_ptr)
pybind11_fail("cpp_function::cpp_function(): Could not allocate function object");
} else {
/* Append at the end of the overload chain */
m_ptr = rec->sibling.ptr();
inc_ref();
chain_start = chain;
if (chain->is_method != rec->is_method)
pybind11_fail("overloading a method with both static and instance methods is not supported; "
#if defined(NDEBUG)
"compile in debug mode for more details"
#else
"error while attempting to bind " + std::string(rec->is_method ? "instance" : "static") + " method " +
std::string(pybind11::str(rec->scope.attr("__name__"))) + "." + std::string(rec->name) + signature
#endif
);
while (chain->next)
chain = chain->next;
chain->next = rec;
}
std::string signatures;
int index = 0;
/* Create a nice pydoc rec including all signatures and
docstrings of the functions in the overload chain */
if (chain && options::show_function_signatures()) {
// First a generic signature
signatures += rec->name;
signatures += "(*args, **kwargs)\n";
signatures += "Overloaded function.\n\n";
}
// Then specific overload signatures
bool first_user_def = true;
for (auto it = chain_start; it != nullptr; it = it->next) {
if (options::show_function_signatures()) {
if (index > 0) signatures += "\n";
if (chain)
signatures += std::to_string(++index) + ". ";
signatures += rec->name;
signatures += it->signature;
signatures += "\n";
}
if (it->doc && strlen(it->doc) > 0 && options::show_user_defined_docstrings()) {
// If we're appending another docstring, and aren't printing function signatures, we
// need to append a newline first:
if (!options::show_function_signatures()) {
if (first_user_def) first_user_def = false;
else signatures += "\n";
}
if (options::show_function_signatures()) signatures += "\n";
signatures += it->doc;
if (options::show_function_signatures()) signatures += "\n";
}
}
/* Install docstring */
PyCFunctionObject *func = (PyCFunctionObject *) m_ptr;
if (func->m_ml->ml_doc)
std::free(const_cast<char *>(func->m_ml->ml_doc));
func->m_ml->ml_doc = strdup(signatures.c_str());
if (rec->is_method) {
m_ptr = PYBIND11_INSTANCE_METHOD_NEW(m_ptr, rec->scope.ptr());
if (!m_ptr)
pybind11_fail("cpp_function::cpp_function(): Could not allocate instance method object");
Py_DECREF(func);
}
}
/// When a cpp_function is GCed, release any memory allocated by pybind11
static void destruct(detail::function_record *rec) {
while (rec) {
detail::function_record *next = rec->next;
if (rec->free_data)
rec->free_data(rec);
std::free((char *) rec->name);
std::free((char *) rec->doc);
std::free((char *) rec->signature);
for (auto &arg: rec->args) {
std::free(const_cast<char *>(arg.name));
std::free(const_cast<char *>(arg.descr));
arg.value.dec_ref();
}
if (rec->def) {
std::free(const_cast<char *>(rec->def->ml_doc));
delete rec->def;
}
delete rec;
rec = next;
}
}
/// Main dispatch logic for calls to functions bound using pybind11
static PyObject *dispatcher(PyObject *self, PyObject *args_in, PyObject *kwargs_in) {
using namespace detail;
/* Iterator over the list of potentially admissible overloads */
function_record *overloads = (function_record *) PyCapsule_GetPointer(self, nullptr),
*it = overloads;
/* Need to know how many arguments + keyword arguments there are to pick the right overload */
const size_t n_args_in = (size_t) PyTuple_GET_SIZE(args_in);
handle parent = n_args_in > 0 ? PyTuple_GET_ITEM(args_in, 0) : nullptr,
result = PYBIND11_TRY_NEXT_OVERLOAD;
try {
// We do this in two passes: in the first pass, we load arguments with `convert=false`;
// in the second, we allow conversion (except for arguments with an explicit
// py::arg().noconvert()). This lets us prefer calls without conversion, with
// conversion as a fallback.
std::vector<function_call> second_pass;
// However, if there are no overloads, we can just skip the no-convert pass entirely
const bool overloaded = it != nullptr && it->next != nullptr;
for (; it != nullptr; it = it->next) {
/* For each overload:
1. Copy all positional arguments we were given, also checking to make sure that
named positional arguments weren't *also* specified via kwarg.
2. If we weren't given enough, try to make up the omitted ones by checking
whether they were provided by a kwarg matching the `py::arg("name")` name. If
so, use it (and remove it from kwargs; if not, see if the function binding
provided a default that we can use.
3. Ensure that either all keyword arguments were "consumed", or that the function
takes a kwargs argument to accept unconsumed kwargs.
4. Any positional arguments still left get put into a tuple (for args), and any
leftover kwargs get put into a dict.
5. Pack everything into a vector; if we have py::args or py::kwargs, they are an
extra tuple or dict at the end of the positional arguments.
6. Call the function call dispatcher (function_record::impl)
If one of these fail, move on to the next overload and keep trying until we get a
result other than PYBIND11_TRY_NEXT_OVERLOAD.
*/
function_record &func = *it;
size_t pos_args = func.nargs; // Number of positional arguments that we need
if (func.has_args) --pos_args; // (but don't count py::args
if (func.has_kwargs) --pos_args; // or py::kwargs)
if (!func.has_args && n_args_in > pos_args)
continue; // Too many arguments for this overload
if (n_args_in < pos_args && func.args.size() < pos_args)
continue; // Not enough arguments given, and not enough defaults to fill in the blanks
function_call call(func, parent);
size_t args_to_copy = std::min(pos_args, n_args_in);
size_t args_copied = 0;
// 1. Copy any position arguments given.
bool bad_arg = false;
for (; args_copied < args_to_copy; ++args_copied) {
argument_record *arg_rec = args_copied < func.args.size() ? &func.args[args_copied] : nullptr;
if (kwargs_in && arg_rec && arg_rec->name && PyDict_GetItemString(kwargs_in, arg_rec->name)) {
bad_arg = true;
break;
}
handle arg(PyTuple_GET_ITEM(args_in, args_copied));
if (arg_rec && !arg_rec->none && arg.is_none()) {
bad_arg = true;
break;
}
call.args.push_back(arg);
call.args_convert.push_back(arg_rec ? arg_rec->convert : true);
}
if (bad_arg)
continue; // Maybe it was meant for another overload (issue #688)
// We'll need to copy this if we steal some kwargs for defaults
dict kwargs = reinterpret_borrow<dict>(kwargs_in);
// 2. Check kwargs and, failing that, defaults that may help complete the list
if (args_copied < pos_args) {
bool copied_kwargs = false;
for (; args_copied < pos_args; ++args_copied) {
const auto &arg = func.args[args_copied];
handle value;
if (kwargs_in && arg.name)
value = PyDict_GetItemString(kwargs.ptr(), arg.name);
if (value) {
// Consume a kwargs value
if (!copied_kwargs) {
kwargs = reinterpret_steal<dict>(PyDict_Copy(kwargs.ptr()));
copied_kwargs = true;
}
PyDict_DelItemString(kwargs.ptr(), arg.name);
} else if (arg.value) {
value = arg.value;
}
if (value) {
call.args.push_back(value);
call.args_convert.push_back(arg.convert);
}
else
break;
}
if (args_copied < pos_args)
continue; // Not enough arguments, defaults, or kwargs to fill the positional arguments
}
// 3. Check everything was consumed (unless we have a kwargs arg)
if (kwargs && kwargs.size() > 0 && !func.has_kwargs)
continue; // Unconsumed kwargs, but no py::kwargs argument to accept them
// 4a. If we have a py::args argument, create a new tuple with leftovers
tuple extra_args;
if (func.has_args) {
if (args_to_copy == 0) {
// We didn't copy out any position arguments from the args_in tuple, so we
// can reuse it directly without copying:
extra_args = reinterpret_borrow<tuple>(args_in);
} else if (args_copied >= n_args_in) {
extra_args = tuple(0);
} else {
size_t args_size = n_args_in - args_copied;
extra_args = tuple(args_size);
for (size_t i = 0; i < args_size; ++i) {
handle item = PyTuple_GET_ITEM(args_in, args_copied + i);
extra_args[i] = item.inc_ref().ptr();
}
}
call.args.push_back(extra_args);
call.args_convert.push_back(false);
}
// 4b. If we have a py::kwargs, pass on any remaining kwargs
if (func.has_kwargs) {
if (!kwargs.ptr())
kwargs = dict(); // If we didn't get one, send an empty one
call.args.push_back(kwargs);
call.args_convert.push_back(false);
}
// 5. Put everything in a vector. Not technically step 5, we've been building it
// in `call.args` all along.
#if !defined(NDEBUG)
if (call.args.size() != func.nargs || call.args_convert.size() != func.nargs)
pybind11_fail("Internal error: function call dispatcher inserted wrong number of arguments!");
#endif
std::vector<bool> second_pass_convert;
if (overloaded) {
// We're in the first no-convert pass, so swap out the conversion flags for a
// set of all-false flags. If the call fails, we'll swap the flags back in for
// the conversion-allowed call below.
second_pass_convert.resize(func.nargs, false);
call.args_convert.swap(second_pass_convert);
}
// 6. Call the function.
try {
loader_life_support guard{};
result = func.impl(call);
} catch (reference_cast_error &) {
result = PYBIND11_TRY_NEXT_OVERLOAD;
}
if (result.ptr() != PYBIND11_TRY_NEXT_OVERLOAD)
break;
if (overloaded) {
// The (overloaded) call failed; if the call has at least one argument that
// permits conversion (i.e. it hasn't been explicitly specified `.noconvert()`)
// then add this call to the list of second pass overloads to try.
for (size_t i = func.is_method ? 1 : 0; i < pos_args; i++) {
if (second_pass_convert[i]) {
// Found one: swap the converting flags back in and store the call for
// the second pass.
call.args_convert.swap(second_pass_convert);
second_pass.push_back(std::move(call));
break;
}
}
}
}
if (overloaded && !second_pass.empty() && result.ptr() == PYBIND11_TRY_NEXT_OVERLOAD) {
// The no-conversion pass finished without success, try again with conversion allowed
for (auto &call : second_pass) {
try {
loader_life_support guard{};
result = call.func.impl(call);
} catch (reference_cast_error &) {
result = PYBIND11_TRY_NEXT_OVERLOAD;
}
if (result.ptr() != PYBIND11_TRY_NEXT_OVERLOAD)
break;
}
}
} catch (error_already_set &e) {
e.restore();
return nullptr;
} catch (...) {
/* When an exception is caught, give each registered exception
translator a chance to translate it to a Python exception
in reverse order of registration.
A translator may choose to do one of the following:
- catch the exception and call PyErr_SetString or PyErr_SetObject
to set a standard (or custom) Python exception, or
- do nothing and let the exception fall through to the next translator, or
- delegate translation to the next translator by throwing a new type of exception. */
auto last_exception = std::current_exception();
auto &registered_exception_translators = get_internals().registered_exception_translators;
for (auto& translator : registered_exception_translators) {
try {
translator(last_exception);
} catch (...) {
last_exception = std::current_exception();
continue;
}
return nullptr;
}
PyErr_SetString(PyExc_SystemError, "Exception escaped from default exception translator!");
return nullptr;
}
if (result.ptr() == PYBIND11_TRY_NEXT_OVERLOAD) {
if (overloads->is_operator)
return handle(Py_NotImplemented).inc_ref().ptr();
std::string msg = std::string(overloads->name) + "(): incompatible " +
std::string(overloads->is_constructor ? "constructor" : "function") +
" arguments. The following argument types are supported:\n";
int ctr = 0;
for (function_record *it2 = overloads; it2 != nullptr; it2 = it2->next) {
msg += " "+ std::to_string(++ctr) + ". ";
bool wrote_sig = false;
if (overloads->is_constructor) {
// For a constructor, rewrite `(self: Object, arg0, ...) -> NoneType` as `Object(arg0, ...)`
std::string sig = it2->signature;
size_t start = sig.find('(') + 7; // skip "(self: "
if (start < sig.size()) {
// End at the , for the next argument
size_t end = sig.find(", "), next = end + 2;
size_t ret = sig.rfind(" -> ");
// Or the ), if there is no comma:
if (end >= sig.size()) next = end = sig.find(')');
if (start < end && next < sig.size()) {
msg.append(sig, start, end - start);
msg += '(';
msg.append(sig, next, ret - next);
wrote_sig = true;
}
}
}
if (!wrote_sig) msg += it2->signature;
msg += "\n";
}
msg += "\nInvoked with: ";
auto args_ = reinterpret_borrow<tuple>(args_in);
bool some_args = false;
for (size_t ti = overloads->is_constructor ? 1 : 0; ti < args_.size(); ++ti) {
if (!some_args) some_args = true;
else msg += ", ";
msg += pybind11::repr(args_[ti]);
}
if (kwargs_in) {
auto kwargs = reinterpret_borrow<dict>(kwargs_in);
if (kwargs.size() > 0) {
if (some_args) msg += "; ";
msg += "kwargs: ";
bool first = true;
for (auto kwarg : kwargs) {
if (first) first = false;
else msg += ", ";
msg += pybind11::str("{}={!r}").format(kwarg.first, kwarg.second);
}
}
}
PyErr_SetString(PyExc_TypeError, msg.c_str());
return nullptr;
} else if (!result) {
std::string msg = "Unable to convert function return value to a "
"Python type! The signature was\n\t";
msg += it->signature;
PyErr_SetString(PyExc_TypeError, msg.c_str());
return nullptr;
} else {
if (overloads->is_constructor) {
auto tinfo = get_type_info((PyTypeObject *) overloads->scope.ptr());
tinfo->init_instance(reinterpret_cast<instance *>(parent.ptr()), nullptr);
}
return result.ptr();
}
}
};
/// Wrapper for Python extension modules
class module : public object {
public:
PYBIND11_OBJECT_DEFAULT(module, object, PyModule_Check)
/// Create a new top-level Python module with the given name and docstring
explicit module(const char *name, const char *doc = nullptr) {
if (!options::show_user_defined_docstrings()) doc = nullptr;
#if PY_MAJOR_VERSION >= 3
PyModuleDef *def = new PyModuleDef();
std::memset(def, 0, sizeof(PyModuleDef));
def->m_name = name;
def->m_doc = doc;
def->m_size = -1;
Py_INCREF(def);
m_ptr = PyModule_Create(def);
#else
m_ptr = Py_InitModule3(name, nullptr, doc);
#endif
if (m_ptr == nullptr)
pybind11_fail("Internal error in module::module()");
inc_ref();
}
/** \rst
Create Python binding for a new function within the module scope. ``Func``
can be a plain C++ function, a function pointer, or a lambda function. For
details on the ``Extra&& ... extra`` argument, see section :ref:`extras`.
\endrst */
template <typename Func, typename... Extra>
module &def(const char *name_, Func &&f, const Extra& ... extra) {
cpp_function func(std::forward<Func>(f), name(name_), scope(*this),
sibling(getattr(*this, name_, none())), extra...);
// NB: allow overwriting here because cpp_function sets up a chain with the intention of
// overwriting (and has already checked internally that it isn't overwriting non-functions).
add_object(name_, func, true /* overwrite */);
return *this;
}
/** \rst
Create and return a new Python submodule with the given name and docstring.
This also works recursively, i.e.
.. code-block:: cpp
py::module m("example", "pybind11 example plugin");
py::module m2 = m.def_submodule("sub", "A submodule of 'example'");
py::module m3 = m2.def_submodule("subsub", "A submodule of 'example.sub'");
\endrst */
module def_submodule(const char *name, const char *doc = nullptr) {
std::string full_name = std::string(PyModule_GetName(m_ptr))
+ std::string(".") + std::string(name);
auto result = reinterpret_borrow<module>(PyImport_AddModule(full_name.c_str()));
if (doc && options::show_user_defined_docstrings())
result.attr("__doc__") = pybind11::str(doc);
attr(name) = result;
return result;
}
/// Import and return a module or throws `error_already_set`.
static module import(const char *name) {
PyObject *obj = PyImport_ImportModule(name);
if (!obj)
throw error_already_set();
return reinterpret_steal<module>(obj);
}
// Adds an object to the module using the given name. Throws if an object with the given name
// already exists.
//
// overwrite should almost always be false: attempting to overwrite objects that pybind11 has
// established will, in most cases, break things.
PYBIND11_NOINLINE void add_object(const char *name, handle obj, bool overwrite = false) {
if (!overwrite && hasattr(*this, name))
pybind11_fail("Error during initialization: multiple incompatible definitions with name \"" +
std::string(name) + "\"");
PyModule_AddObject(ptr(), name, obj.inc_ref().ptr() /* steals a reference */);
}
};
/// \ingroup python_builtins
/// Return a dictionary representing the global variables in the current execution frame,
/// or ``__main__.__dict__`` if there is no frame (usually when the interpreter is embedded).
inline dict globals() {
PyObject *p = PyEval_GetGlobals();
return reinterpret_borrow<dict>(p ? p : module::import("__main__").attr("__dict__").ptr());
}
NAMESPACE_BEGIN(detail)
/// Generic support for creating new Python heap types
class generic_type : public object {
template <typename...> friend class class_;
public:
PYBIND11_OBJECT_DEFAULT(generic_type, object, PyType_Check)
protected:
void initialize(const type_record &rec) {
if (rec.scope && hasattr(rec.scope, rec.name))
pybind11_fail("generic_type: cannot initialize type \"" + std::string(rec.name) +
"\": an object with that name is already defined");
if (get_type_info(*rec.type))
pybind11_fail("generic_type: type \"" + std::string(rec.name) +
"\" is already registered!");
m_ptr = make_new_python_type(rec);
/* Register supplemental type information in C++ dict */
auto *tinfo = new detail::type_info();
tinfo->type = (PyTypeObject *) m_ptr;
tinfo->cpptype = rec.type;
tinfo->type_size = rec.type_size;
tinfo->operator_new = rec.operator_new;
tinfo->holder_size_in_ptrs = size_in_ptrs(rec.holder_size);
tinfo->init_instance = rec.init_instance;
tinfo->dealloc = rec.dealloc;
tinfo->simple_type = true;
tinfo->simple_ancestors = true;
auto &internals = get_internals();
auto tindex = std::type_index(*rec.type);
tinfo->direct_conversions = &internals.direct_conversions[tindex];
tinfo->default_holder = rec.default_holder;
internals.registered_types_cpp[tindex] = tinfo;
internals.registered_types_py[(PyTypeObject *) m_ptr] = { tinfo };
if (rec.bases.size() > 1 || rec.multiple_inheritance) {
mark_parents_nonsimple(tinfo->type);
tinfo->simple_ancestors = false;
}
else if (rec.bases.size() == 1) {
auto parent_tinfo = get_type_info((PyTypeObject *) rec.bases[0].ptr());
tinfo->simple_ancestors = parent_tinfo->simple_ancestors;
}
}
/// Helper function which tags all parents of a type using mult. inheritance
void mark_parents_nonsimple(PyTypeObject *value) {
auto t = reinterpret_borrow<tuple>(value->tp_bases);
for (handle h : t) {
auto tinfo2 = get_type_info((PyTypeObject *) h.ptr());
if (tinfo2)
tinfo2->simple_type = false;
mark_parents_nonsimple((PyTypeObject *) h.ptr());
}
}
void install_buffer_funcs(
buffer_info *(*get_buffer)(PyObject *, void *),
void *get_buffer_data) {
PyHeapTypeObject *type = (PyHeapTypeObject*) m_ptr;
auto tinfo = detail::get_type_info(&type->ht_type);
if (!type->ht_type.tp_as_buffer)
pybind11_fail(
"To be able to register buffer protocol support for the type '" +
std::string(tinfo->type->tp_name) +
"' the associated class<>(..) invocation must "
"include the pybind11::buffer_protocol() annotation!");
tinfo->get_buffer = get_buffer;
tinfo->get_buffer_data = get_buffer_data;
}
void def_property_static_impl(const char *name,
handle fget, handle fset,
detail::function_record *rec_fget) {
const auto is_static = !(rec_fget->is_method && rec_fget->scope);
const auto has_doc = rec_fget->doc && pybind11::options::show_user_defined_docstrings();
auto property = handle((PyObject *) (is_static ? get_internals().static_property_type
: &PyProperty_Type));
attr(name) = property(fget.ptr() ? fget : none(),
fset.ptr() ? fset : none(),
/*deleter*/none(),
pybind11::str(has_doc ? rec_fget->doc : ""));
}
};
/// Set the pointer to operator new if it exists. The cast is needed because it can be overloaded.
template <typename T, typename = void_t<decltype(static_cast<void *(*)(size_t)>(T::operator new))>>
void set_operator_new(type_record *r) { r->operator_new = &T::operator new; }
template <typename> void set_operator_new(...) { }
template <typename T, typename SFINAE = void> struct has_operator_delete : std::false_type { };
template <typename T> struct has_operator_delete<T, void_t<decltype(static_cast<void (*)(void *)>(T::operator delete))>>
: std::true_type { };
template <typename T, typename SFINAE = void> struct has_operator_delete_size : std::false_type { };
template <typename T> struct has_operator_delete_size<T, void_t<decltype(static_cast<void (*)(void *, size_t)>(T::operator delete))>>
: std::true_type { };
/// Call class-specific delete if it exists or global otherwise. Can also be an overload set.
template <typename T, enable_if_t<has_operator_delete<T>::value, int> = 0>
void call_operator_delete(T *p, size_t) { T::operator delete(p); }
template <typename T, enable_if_t<!has_operator_delete<T>::value && has_operator_delete_size<T>::value, int> = 0>
void call_operator_delete(T *p, size_t s) { T::operator delete(p, s); }
inline void call_operator_delete(void *p, size_t) { ::operator delete(p); }
NAMESPACE_END(detail)
/// Given a pointer to a member function, cast it to its `Derived` version.
/// Forward everything else unchanged.
template <typename /*Derived*/, typename F>
auto method_adaptor(F &&f) -> decltype(std::forward<F>(f)) { return std::forward<F>(f); }
template <typename Derived, typename Return, typename Class, typename... Args>
auto method_adaptor(Return (Class::*pmf)(Args...)) -> Return (Derived::*)(Args...) { return pmf; }
template <typename Derived, typename Return, typename Class, typename... Args>
auto method_adaptor(Return (Class::*pmf)(Args...) const) -> Return (Derived::*)(Args...) const { return pmf; }
template <typename type_, typename... options>
class class_ : public detail::generic_type {
template <typename T> using is_holder = detail::is_holder_type<type_, T>;
template <typename T> using is_subtype = detail::is_strict_base_of<type_, T>;
template <typename T> using is_base = detail::is_strict_base_of<T, type_>;
// struct instead of using here to help MSVC:
template <typename T> struct is_valid_class_option :
detail::any_of<is_holder<T>, is_subtype<T>, is_base<T>> {};
public:
using type = type_;
using type_alias = detail::exactly_one_t<is_subtype, void, options...>;
constexpr static bool has_alias = !std::is_void<type_alias>::value;
using holder_type = detail::exactly_one_t<is_holder, std::unique_ptr<type>, options...>;
static_assert(detail::all_of<is_valid_class_option<options>...>::value,
"Unknown/invalid class_ template parameters provided");
PYBIND11_OBJECT(class_, generic_type, PyType_Check)
template <typename... Extra>
class_(handle scope, const char *name, const Extra &... extra) {
using namespace detail;
// MI can only be specified via class_ template options, not constructor parameters
static_assert(
none_of<is_pyobject<Extra>...>::value || // no base class arguments, or:
( constexpr_sum(is_pyobject<Extra>::value...) == 1 && // Exactly one base
constexpr_sum(is_base<options>::value...) == 0 && // no template option bases
none_of<std::is_same<multiple_inheritance, Extra>...>::value), // no multiple_inheritance attr
"Error: multiple inheritance bases must be specified via class_ template options");
type_record record;
record.scope = scope;
record.name = name;
record.type = &typeid(type);
record.type_size = sizeof(conditional_t<has_alias, type_alias, type>);
record.holder_size = sizeof(holder_type);
record.init_instance = init_instance;
record.dealloc = dealloc;
record.default_holder = std::is_same<holder_type, std::unique_ptr<type>>::value;
set_operator_new<type>(&record);
/* Register base classes specified via template arguments to class_, if any */
PYBIND11_EXPAND_SIDE_EFFECTS(add_base<options>(record));
/* Process optional arguments, if any */
process_attributes<Extra...>::init(extra..., &record);
generic_type::initialize(record);
if (has_alias) {
auto &instances = get_internals().registered_types_cpp;
instances[std::type_index(typeid(type_alias))] = instances[std::type_index(typeid(type))];
}
}
template <typename Base, detail::enable_if_t<is_base<Base>::value, int> = 0>
static void add_base(detail::type_record &rec) {
rec.add_base(typeid(Base), [](void *src) -> void * {
return static_cast<Base *>(reinterpret_cast<type *>(src));
});
}
template <typename Base, detail::enable_if_t<!is_base<Base>::value, int> = 0>
static void add_base(detail::type_record &) { }
template <typename Func, typename... Extra>
class_ &def(const char *name_, Func&& f, const Extra&... extra) {
cpp_function cf(method_adaptor<type>(std::forward<Func>(f)), name(name_), is_method(*this),
sibling(getattr(*this, name_, none())), extra...);
attr(cf.name()) = cf;
return *this;
}
template <typename Func, typename... Extra> class_ &
def_static(const char *name_, Func &&f, const Extra&... extra) {
static_assert(!std::is_member_function_pointer<Func>::value,
"def_static(...) called with a non-static member function pointer");
cpp_function cf(std::forward<Func>(f), name(name_), scope(*this),
sibling(getattr(*this, name_, none())), extra...);
attr(cf.name()) = cf;
return *this;
}
template <detail::op_id id, detail::op_type ot, typename L, typename R, typename... Extra>
class_ &def(const detail::op_<id, ot, L, R> &op, const Extra&... extra) {
op.execute(*this, extra...);
return *this;
}
template <detail::op_id id, detail::op_type ot, typename L, typename R, typename... Extra>
class_ & def_cast(const detail::op_<id, ot, L, R> &op, const Extra&... extra) {
op.execute_cast(*this, extra...);
return *this;
}
template <typename... Args, typename... Extra>
class_ &def(const detail::init<Args...> &init, const Extra&... extra) {
init.execute(*this, extra...);
return *this;
}
template <typename... Args, typename... Extra>
class_ &def(const detail::init_alias<Args...> &init, const Extra&... extra) {
init.execute(*this, extra...);
return *this;
}
template <typename Func> class_& def_buffer(Func &&func) {
struct capture { Func func; };
capture *ptr = new capture { std::forward<Func>(func) };
install_buffer_funcs([](PyObject *obj, void *ptr) -> buffer_info* {
detail::make_caster<type> caster;
if (!caster.load(obj, false))
return nullptr;
return new buffer_info(((capture *) ptr)->func(caster));
}, ptr);
return *this;
}
template <typename Return, typename Class, typename... Args>
class_ &def_buffer(Return (Class::*func)(Args...)) {
return def_buffer([func] (type &obj) { return (obj.*func)(); });
}
template <typename Return, typename Class, typename... Args>
class_ &def_buffer(Return (Class::*func)(Args...) const) {
return def_buffer([func] (const type &obj) { return (obj.*func)(); });
}
template <typename C, typename D, typename... Extra>
class_ &def_readwrite(const char *name, D C::*pm, const Extra&... extra) {
static_assert(std::is_base_of<C, type>::value, "def_readwrite() requires a class member (or base class member)");
cpp_function fget([pm](const type &c) -> const D &{ return c.*pm; }, is_method(*this)),
fset([pm](type &c, const D &value) { c.*pm = value; }, is_method(*this));
def_property(name, fget, fset, return_value_policy::reference_internal, extra...);
return *this;
}
template <typename C, typename D, typename... Extra>
class_ &def_readonly(const char *name, const D C::*pm, const Extra& ...extra) {
static_assert(std::is_base_of<C, type>::value, "def_readonly() requires a class member (or base class member)");
cpp_function fget([pm](const type &c) -> const D &{ return c.*pm; }, is_method(*this));
def_property_readonly(name, fget, return_value_policy::reference_internal, extra...);
return *this;
}
template <typename D, typename... Extra>
class_ &def_readwrite_static(const char *name, D *pm, const Extra& ...extra) {
cpp_function fget([pm](object) -> const D &{ return *pm; }, scope(*this)),
fset([pm](object, const D &value) { *pm = value; }, scope(*this));
def_property_static(name, fget, fset, return_value_policy::reference, extra...);
return *this;
}
template <typename D, typename... Extra>
class_ &def_readonly_static(const char *name, const D *pm, const Extra& ...extra) {
cpp_function fget([pm](object) -> const D &{ return *pm; }, scope(*this));
def_property_readonly_static(name, fget, return_value_policy::reference, extra...);
return *this;
}
/// Uses return_value_policy::reference_internal by default
template <typename Getter, typename... Extra>
class_ &def_property_readonly(const char *name, const Getter &fget, const Extra& ...extra) {
return def_property_readonly(name, cpp_function(method_adaptor<type>(fget)),
return_value_policy::reference_internal, extra...);
}
/// Uses cpp_function's return_value_policy by default
template <typename... Extra>
class_ &def_property_readonly(const char *name, const cpp_function &fget, const Extra& ...extra) {
return def_property(name, fget, cpp_function(), extra...);
}
/// Uses return_value_policy::reference by default
template <typename Getter, typename... Extra>
class_ &def_property_readonly_static(const char *name, const Getter &fget, const Extra& ...extra) {
return def_property_readonly_static(name, cpp_function(fget), return_value_policy::reference, extra...);
}
/// Uses cpp_function's return_value_policy by default
template <typename... Extra>
class_ &def_property_readonly_static(const char *name, const cpp_function &fget, const Extra& ...extra) {
return def_property_static(name, fget, cpp_function(), extra...);
}
/// Uses return_value_policy::reference_internal by default
template <typename Getter, typename Setter, typename... Extra>
class_ &def_property(const char *name, const Getter &fget, const Setter &fset, const Extra& ...extra) {
return def_property(name, fget, cpp_function(method_adaptor<type>(fset)), extra...);
}
template <typename Getter, typename... Extra>
class_ &def_property(const char *name, const Getter &fget, const cpp_function &fset, const Extra& ...extra) {
return def_property(name, cpp_function(method_adaptor<type>(fget)), fset,
return_value_policy::reference_internal, extra...);
}
/// Uses cpp_function's return_value_policy by default
template <typename... Extra>
class_ &def_property(const char *name, const cpp_function &fget, const cpp_function &fset, const Extra& ...extra) {
return def_property_static(name, fget, fset, is_method(*this), extra...);
}
/// Uses return_value_policy::reference by default
template <typename Getter, typename... Extra>
class_ &def_property_static(const char *name, const Getter &fget, const cpp_function &fset, const Extra& ...extra) {
return def_property_static(name, cpp_function(fget), fset, return_value_policy::reference, extra...);
}
/// Uses cpp_function's return_value_policy by default
template <typename... Extra>
class_ &def_property_static(const char *name, const cpp_function &fget, const cpp_function &fset, const Extra& ...extra) {
auto rec_fget = get_function_record(fget), rec_fset = get_function_record(fset);
char *doc_prev = rec_fget->doc; /* 'extra' field may include a property-specific documentation string */
detail::process_attributes<Extra...>::init(extra..., rec_fget);
if (rec_fget->doc && rec_fget->doc != doc_prev) {
free(doc_prev);
rec_fget->doc = strdup(rec_fget->doc);
}
if (rec_fset) {
doc_prev = rec_fset->doc;
detail::process_attributes<Extra...>::init(extra..., rec_fset);
if (rec_fset->doc && rec_fset->doc != doc_prev) {
free(doc_prev);
rec_fset->doc = strdup(rec_fset->doc);
}
}
def_property_static_impl(name, fget, fset, rec_fget);
return *this;
}
private:
/// Initialize holder object, variant 1: object derives from enable_shared_from_this
template <typename T>
static void init_holder(detail::instance *inst, detail::value_and_holder &v_h,
const holder_type * /* unused */, const std::enable_shared_from_this<T> * /* dummy */) {
try {
auto sh = std::dynamic_pointer_cast<typename holder_type::element_type>(
v_h.value_ptr<type>()->shared_from_this());
if (sh) {
new (&v_h.holder<holder_type>()) holder_type(std::move(sh));
v_h.set_holder_constructed();
}
} catch (const std::bad_weak_ptr &) {}
if (!v_h.holder_constructed() && inst->owned) {
new (&v_h.holder<holder_type>()) holder_type(v_h.value_ptr<type>());
v_h.set_holder_constructed();
}
}
static void init_holder_from_existing(const detail::value_and_holder &v_h,
const holder_type *holder_ptr, std::true_type /*is_copy_constructible*/) {
new (&v_h.holder<holder_type>()) holder_type(*reinterpret_cast<const holder_type *>(holder_ptr));
}
static void init_holder_from_existing(const detail::value_and_holder &v_h,
const holder_type *holder_ptr, std::false_type /*is_copy_constructible*/) {
new (&v_h.holder<holder_type>()) holder_type(std::move(*const_cast<holder_type *>(holder_ptr)));
}
/// Initialize holder object, variant 2: try to construct from existing holder object, if possible
static void init_holder(detail::instance *inst, detail::value_and_holder &v_h,
const holder_type *holder_ptr, const void * /* dummy -- not enable_shared_from_this<T>) */) {
if (holder_ptr) {
init_holder_from_existing(v_h, holder_ptr, std::is_copy_constructible<holder_type>());
v_h.set_holder_constructed();
} else if (inst->owned || detail::always_construct_holder<holder_type>::value) {
new (&v_h.holder<holder_type>()) holder_type(v_h.value_ptr<type>());
v_h.set_holder_constructed();
}
}
/// Performs instance initialization including constructing a holder and registering the known
/// instance. Should be called as soon as the `type` value_ptr is set for an instance. Takes an
/// optional pointer to an existing holder to use; if not specified and the instance is
/// `.owned`, a new holder will be constructed to manage the value pointer.
static void init_instance(detail::instance *inst, const void *holder_ptr) {
auto v_h = inst->get_value_and_holder(detail::get_type_info(typeid(type)));
if (!v_h.instance_registered()) {
register_instance(inst, v_h.value_ptr(), v_h.type);
v_h.set_instance_registered();
}
init_holder(inst, v_h, (const holder_type *) holder_ptr, v_h.value_ptr<type>());
}
/// Deallocates an instance; via holder, if constructed; otherwise via operator delete.
static void dealloc(const detail::value_and_holder &v_h) {
if (v_h.holder_constructed())
v_h.holder<holder_type>().~holder_type();
else
detail::call_operator_delete(v_h.value_ptr<type>(), v_h.type->type_size);
}
static detail::function_record *get_function_record(handle h) {
h = detail::get_function(h);
return h ? (detail::function_record *) reinterpret_borrow<capsule>(PyCFunction_GET_SELF(h.ptr()))
: nullptr;
}
};
/// Binds C++ enumerations and enumeration classes to Python
template <typename Type> class enum_ : public class_<Type> {
public:
using class_<Type>::def;
using class_<Type>::def_property_readonly_static;
using Scalar = typename std::underlying_type<Type>::type;
template <typename... Extra>
enum_(const handle &scope, const char *name, const Extra&... extra)
: class_<Type>(scope, name, extra...), m_entries(), m_parent(scope) {
constexpr bool is_arithmetic = detail::any_of<std::is_same<arithmetic, Extra>...>::value;
auto m_entries_ptr = m_entries.inc_ref().ptr();
def("__repr__", [name, m_entries_ptr](Type value) -> pybind11::str {
for (const auto &kv : reinterpret_borrow<dict>(m_entries_ptr)) {
if (pybind11::cast<Type>(kv.second) == value)
return pybind11::str("{}.{}").format(name, kv.first);
}
return pybind11::str("{}.???").format(name);
});
def_property_readonly_static("__members__", [m_entries_ptr](object /* self */) {
dict m;
for (const auto &kv : reinterpret_borrow<dict>(m_entries_ptr))
m[kv.first] = kv.second;
return m;
}, return_value_policy::copy);
def("__init__", [](Type& value, Scalar i) { value = (Type)i; });
def("__int__", [](Type value) { return (Scalar) value; });
#if PY_MAJOR_VERSION < 3
def("__long__", [](Type value) { return (Scalar) value; });
#endif
def("__eq__", [](const Type &value, Type *value2) { return value2 && value == *value2; });
def("__ne__", [](const Type &value, Type *value2) { return !value2 || value != *value2; });
if (is_arithmetic) {
def("__lt__", [](const Type &value, Type *value2) { return value2 && value < *value2; });
def("__gt__", [](const Type &value, Type *value2) { return value2 && value > *value2; });
def("__le__", [](const Type &value, Type *value2) { return value2 && value <= *value2; });
def("__ge__", [](const Type &value, Type *value2) { return value2 && value >= *value2; });
}
if (std::is_convertible<Type, Scalar>::value) {
// Don't provide comparison with the underlying type if the enum isn't convertible,
// i.e. if Type is a scoped enum, mirroring the C++ behaviour. (NB: we explicitly
// convert Type to Scalar below anyway because this needs to compile).
def("__eq__", [](const Type &value, Scalar value2) { return (Scalar) value == value2; });
def("__ne__", [](const Type &value, Scalar value2) { return (Scalar) value != value2; });
if (is_arithmetic) {
def("__lt__", [](const Type &value, Scalar value2) { return (Scalar) value < value2; });
def("__gt__", [](const Type &value, Scalar value2) { return (Scalar) value > value2; });
def("__le__", [](const Type &value, Scalar value2) { return (Scalar) value <= value2; });
def("__ge__", [](const Type &value, Scalar value2) { return (Scalar) value >= value2; });
def("__invert__", [](const Type &value) { return ~((Scalar) value); });
def("__and__", [](const Type &value, Scalar value2) { return (Scalar) value & value2; });
def("__or__", [](const Type &value, Scalar value2) { return (Scalar) value | value2; });
def("__xor__", [](const Type &value, Scalar value2) { return (Scalar) value ^ value2; });
def("__rand__", [](const Type &value, Scalar value2) { return (Scalar) value & value2; });
def("__ror__", [](const Type &value, Scalar value2) { return (Scalar) value | value2; });
def("__rxor__", [](const Type &value, Scalar value2) { return (Scalar) value ^ value2; });
def("__and__", [](const Type &value, const Type &value2) { return (Scalar) value & (Scalar) value2; });
def("__or__", [](const Type &value, const Type &value2) { return (Scalar) value | (Scalar) value2; });
def("__xor__", [](const Type &value, const Type &value2) { return (Scalar) value ^ (Scalar) value2; });
}
}
def("__hash__", [](const Type &value) { return (Scalar) value; });
// Pickling and unpickling -- needed for use with the 'multiprocessing' module
def("__getstate__", [](const Type &value) { return pybind11::make_tuple((Scalar) value); });
def("__setstate__", [](Type &p, tuple t) { new (&p) Type((Type) t[0].cast<Scalar>()); });
}
/// Export enumeration entries into the parent scope
enum_& export_values() {
for (const auto &kv : m_entries)
m_parent.attr(kv.first) = kv.second;
return *this;
}
/// Add an enumeration entry
enum_& value(char const* name, Type value) {
auto v = pybind11::cast(value, return_value_policy::copy);
this->attr(name) = v;
m_entries[pybind11::str(name)] = v;
return *this;
}
private:
dict m_entries;
handle m_parent;
};
NAMESPACE_BEGIN(detail)
template <typename... Args> struct init {
template <typename Class, typename... Extra, enable_if_t<!Class::has_alias, int> = 0>
static void execute(Class &cl, const Extra&... extra) {
using Base = typename Class::type;
/// Function which calls a specific C++ in-place constructor
cl.def("__init__", [](Base *self_, Args... args) { new (self_) Base(args...); }, extra...);
}
template <typename Class, typename... Extra,
enable_if_t<Class::has_alias &&
std::is_constructible<typename Class::type, Args...>::value, int> = 0>
static void execute(Class &cl, const Extra&... extra) {
using Base = typename Class::type;
using Alias = typename Class::type_alias;
handle cl_type = cl;
cl.def("__init__", [cl_type](handle self_, Args... args) {
if (self_.get_type().is(cl_type))
new (self_.cast<Base *>()) Base(args...);
else
new (self_.cast<Alias *>()) Alias(args...);
}, extra...);
}
template <typename Class, typename... Extra,
enable_if_t<Class::has_alias &&
!std::is_constructible<typename Class::type, Args...>::value, int> = 0>
static void execute(Class &cl, const Extra&... extra) {
init_alias<Args...>::execute(cl, extra...);
}
};
template <typename... Args> struct init_alias {
template <typename Class, typename... Extra,
enable_if_t<Class::has_alias && std::is_constructible<typename Class::type_alias, Args...>::value, int> = 0>
static void execute(Class &cl, const Extra&... extra) {
using Alias = typename Class::type_alias;
cl.def("__init__", [](Alias *self_, Args... args) { new (self_) Alias(args...); }, extra...);
}
};
inline void keep_alive_impl(handle nurse, handle patient) {
if (!nurse || !patient)
pybind11_fail("Could not activate keep_alive!");
if (patient.is_none() || nurse.is_none())
return; /* Nothing to keep alive or nothing to be kept alive by */
auto tinfo = all_type_info(Py_TYPE(nurse.ptr()));
if (!tinfo.empty()) {
/* It's a pybind-registered type, so we can store the patient in the
* internal list. */
add_patient(nurse.ptr(), patient.ptr());
}
else {
/* Fall back to clever approach based on weak references taken from
* Boost.Python. This is not used for pybind-registered types because
* the objects can be destroyed out-of-order in a GC pass. */
cpp_function disable_lifesupport(
[patient](handle weakref) { patient.dec_ref(); weakref.dec_ref(); });
weakref wr(nurse, disable_lifesupport);
patient.inc_ref(); /* reference patient and leak the weak reference */
(void) wr.release();
}
}
PYBIND11_NOINLINE inline void keep_alive_impl(size_t Nurse, size_t Patient, function_call &call, handle ret) {
keep_alive_impl(
Nurse == 0 ? ret : Nurse <= call.args.size() ? call.args[Nurse - 1] : handle(),
Patient == 0 ? ret : Patient <= call.args.size() ? call.args[Patient - 1] : handle()
);
}
inline std::pair<decltype(internals::registered_types_py)::iterator, bool> all_type_info_get_cache(PyTypeObject *type) {
auto res = get_internals().registered_types_py
#ifdef __cpp_lib_unordered_map_try_emplace
.try_emplace(type);
#else
.emplace(type, std::vector<detail::type_info *>());
#endif
if (res.second) {
// New cache entry created; set up a weak reference to automatically remove it if the type
// gets destroyed:
weakref((PyObject *) type, cpp_function([type](handle wr) {
get_internals().registered_types_py.erase(type);
wr.dec_ref();
})).release();
}
return res;
}
template <typename Iterator, typename Sentinel, bool KeyIterator, return_value_policy Policy>
struct iterator_state {
Iterator it;
Sentinel end;
bool first_or_done;
};
NAMESPACE_END(detail)
template <typename... Args> detail::init<Args...> init() { return detail::init<Args...>(); }
template <typename... Args> detail::init_alias<Args...> init_alias() { return detail::init_alias<Args...>(); }
/// Makes a python iterator from a first and past-the-end C++ InputIterator.
template <return_value_policy Policy = return_value_policy::reference_internal,
typename Iterator,
typename Sentinel,
typename ValueType = decltype(*std::declval<Iterator>()),
typename... Extra>
iterator make_iterator(Iterator first, Sentinel last, Extra &&... extra) {
typedef detail::iterator_state<Iterator, Sentinel, false, Policy> state;
if (!detail::get_type_info(typeid(state), false)) {
class_<state>(handle(), "iterator")
.def("__iter__", [](state &s) -> state& { return s; })
.def("__next__", [](state &s) -> ValueType {
if (!s.first_or_done)
++s.it;
else
s.first_or_done = false;
if (s.it == s.end) {
s.first_or_done = true;
throw stop_iteration();
}
return *s.it;
}, std::forward<Extra>(extra)..., Policy);
}
return cast(state{first, last, true});
}
/// Makes an python iterator over the keys (`.first`) of a iterator over pairs from a
/// first and past-the-end InputIterator.
template <return_value_policy Policy = return_value_policy::reference_internal,
typename Iterator,
typename Sentinel,
typename KeyType = decltype((*std::declval<Iterator>()).first),
typename... Extra>
iterator make_key_iterator(Iterator first, Sentinel last, Extra &&... extra) {
typedef detail::iterator_state<Iterator, Sentinel, true, Policy> state;
if (!detail::get_type_info(typeid(state), false)) {
class_<state>(handle(), "iterator")
.def("__iter__", [](state &s) -> state& { return s; })
.def("__next__", [](state &s) -> KeyType {
if (!s.first_or_done)
++s.it;
else
s.first_or_done = false;
if (s.it == s.end) {
s.first_or_done = true;
throw stop_iteration();
}
return (*s.it).first;
}, std::forward<Extra>(extra)..., Policy);
}
return cast(state{first, last, true});
}
/// Makes an iterator over values of an stl container or other container supporting
/// `std::begin()`/`std::end()`
template <return_value_policy Policy = return_value_policy::reference_internal,
typename Type, typename... Extra> iterator make_iterator(Type &value, Extra&&... extra) {
return make_iterator<Policy>(std::begin(value), std::end(value), extra...);
}
/// Makes an iterator over the keys (`.first`) of a stl map-like container supporting
/// `std::begin()`/`std::end()`
template <return_value_policy Policy = return_value_policy::reference_internal,
typename Type, typename... Extra> iterator make_key_iterator(Type &value, Extra&&... extra) {
return make_key_iterator<Policy>(std::begin(value), std::end(value), extra...);
}
template <typename InputType, typename OutputType> void implicitly_convertible() {
auto implicit_caster = [](PyObject *obj, PyTypeObject *type) -> PyObject * {
if (!detail::make_caster<InputType>().load(obj, false))
return nullptr;
tuple args(1);
args[0] = obj;
PyObject *result = PyObject_Call((PyObject *) type, args.ptr(), nullptr);
if (result == nullptr)
PyErr_Clear();
return result;
};
if (auto tinfo = detail::get_type_info(typeid(OutputType)))
tinfo->implicit_conversions.push_back(implicit_caster);
else
pybind11_fail("implicitly_convertible: Unable to find type " + type_id<OutputType>());
}
template <typename ExceptionTranslator>
void register_exception_translator(ExceptionTranslator&& translator) {
detail::get_internals().registered_exception_translators.push_front(
std::forward<ExceptionTranslator>(translator));
}
/**
* Wrapper to generate a new Python exception type.
*
* This should only be used with PyErr_SetString for now.
* It is not (yet) possible to use as a py::base.
* Template type argument is reserved for future use.
*/
template <typename type>
class exception : public object {
public:
exception(handle scope, const char *name, PyObject *base = PyExc_Exception) {
std::string full_name = scope.attr("__name__").cast<std::string>() +
std::string(".") + name;
m_ptr = PyErr_NewException(const_cast<char *>(full_name.c_str()), base, NULL);
if (hasattr(scope, name))
pybind11_fail("Error during initialization: multiple incompatible "
"definitions with name \"" + std::string(name) + "\"");
scope.attr(name) = *this;
}
// Sets the current python exception to this exception object with the given message
void operator()(const char *message) {
PyErr_SetString(m_ptr, message);
}
};
/**
* Registers a Python exception in `m` of the given `name` and installs an exception translator to
* translate the C++ exception to the created Python exception using the exceptions what() method.
* This is intended for simple exception translations; for more complex translation, register the
* exception object and translator directly.
*/
template <typename CppException>
exception<CppException> &register_exception(handle scope,
const char *name,
PyObject *base = PyExc_Exception) {
static exception<CppException> ex(scope, name, base);
register_exception_translator([](std::exception_ptr p) {
if (!p) return;
try {
std::rethrow_exception(p);
} catch (const CppException &e) {
ex(e.what());
}
});
return ex;
}
NAMESPACE_BEGIN(detail)
PYBIND11_NOINLINE inline void print(tuple args, dict kwargs) {
auto strings = tuple(args.size());
for (size_t i = 0; i < args.size(); ++i) {
strings[i] = str(args[i]);
}
auto sep = kwargs.contains("sep") ? kwargs["sep"] : cast(" ");
auto line = sep.attr("join")(strings);
object file;
if (kwargs.contains("file")) {
file = kwargs["file"].cast<object>();
} else {
try {
file = module::import("sys").attr("stdout");
} catch (const error_already_set &) {
/* If print() is called from code that is executed as
part of garbage collection during interpreter shutdown,
importing 'sys' can fail. Give up rather than crashing the
interpreter in this case. */
return;
}
}
auto write = file.attr("write");
write(line);
write(kwargs.contains("end") ? kwargs["end"] : cast("\n"));
if (kwargs.contains("flush") && kwargs["flush"].cast<bool>())
file.attr("flush")();
}
NAMESPACE_END(detail)
template <return_value_policy policy = return_value_policy::automatic_reference, typename... Args>
void print(Args &&...args) {
auto c = detail::collect_arguments<policy>(std::forward<Args>(args)...);
detail::print(c.args(), c.kwargs());
}
#if defined(WITH_THREAD) && !defined(PYPY_VERSION)
/* The functions below essentially reproduce the PyGILState_* API using a RAII
* pattern, but there are a few important differences:
*
* 1. When acquiring the GIL from an non-main thread during the finalization
* phase, the GILState API blindly terminates the calling thread, which
* is often not what is wanted. This API does not do this.
*
* 2. The gil_scoped_release function can optionally cut the relationship
* of a PyThreadState and its associated thread, which allows moving it to
* another thread (this is a fairly rare/advanced use case).
*
* 3. The reference count of an acquired thread state can be controlled. This
* can be handy to prevent cases where callbacks issued from an external
* thread would otherwise constantly construct and destroy thread state data
* structures.
*
* See the Python bindings of NanoGUI (http://github.com/wjakob/nanogui) for an
* example which uses features 2 and 3 to migrate the Python thread of
* execution to another thread (to run the event loop on the original thread,
* in this case).
*/
class gil_scoped_acquire {
public:
PYBIND11_NOINLINE gil_scoped_acquire() {
auto const &internals = detail::get_internals();
tstate = (PyThreadState *) PyThread_get_key_value(internals.tstate);
if (!tstate) {
tstate = PyThreadState_New(internals.istate);
#if !defined(NDEBUG)
if (!tstate)
pybind11_fail("scoped_acquire: could not create thread state!");
#endif
tstate->gilstate_counter = 0;
#if PY_MAJOR_VERSION < 3
PyThread_delete_key_value(internals.tstate);
#endif
PyThread_set_key_value(internals.tstate, tstate);
} else {
release = detail::get_thread_state_unchecked() != tstate;
}
if (release) {
/* Work around an annoying assertion in PyThreadState_Swap */
#if defined(Py_DEBUG)
PyInterpreterState *interp = tstate->interp;
tstate->interp = nullptr;
#endif
PyEval_AcquireThread(tstate);
#if defined(Py_DEBUG)
tstate->interp = interp;
#endif
}
inc_ref();
}
void inc_ref() {
++tstate->gilstate_counter;
}
PYBIND11_NOINLINE void dec_ref() {
--tstate->gilstate_counter;
#if !defined(NDEBUG)
if (detail::get_thread_state_unchecked() != tstate)
pybind11_fail("scoped_acquire::dec_ref(): thread state must be current!");
if (tstate->gilstate_counter < 0)
pybind11_fail("scoped_acquire::dec_ref(): reference count underflow!");
#endif
if (tstate->gilstate_counter == 0) {
#if !defined(NDEBUG)
if (!release)
pybind11_fail("scoped_acquire::dec_ref(): internal error!");
#endif
PyThreadState_Clear(tstate);
PyThreadState_DeleteCurrent();
PyThread_delete_key_value(detail::get_internals().tstate);
release = false;
}
}
PYBIND11_NOINLINE ~gil_scoped_acquire() {
dec_ref();
if (release)
PyEval_SaveThread();
}
private:
PyThreadState *tstate = nullptr;
bool release = true;
};
class gil_scoped_release {
public:
explicit gil_scoped_release(bool disassoc = false) : disassoc(disassoc) {
// `get_internals()` must be called here unconditionally in order to initialize
// `internals.tstate` for subsequent `gil_scoped_acquire` calls. Otherwise, an
// initialization race could occur as multiple threads try `gil_scoped_acquire`.
const auto &internals = detail::get_internals();
tstate = PyEval_SaveThread();
if (disassoc) {
auto key = internals.tstate;
#if PY_MAJOR_VERSION < 3
PyThread_delete_key_value(key);
#else
PyThread_set_key_value(key, nullptr);
#endif
}
}
~gil_scoped_release() {
if (!tstate)
return;
PyEval_RestoreThread(tstate);
if (disassoc) {
auto key = detail::get_internals().tstate;
#if PY_MAJOR_VERSION < 3
PyThread_delete_key_value(key);
#endif
PyThread_set_key_value(key, tstate);
}
}
private:
PyThreadState *tstate;
bool disassoc;
};
#elif defined(PYPY_VERSION)
class gil_scoped_acquire {
PyGILState_STATE state;
public:
gil_scoped_acquire() { state = PyGILState_Ensure(); }
~gil_scoped_acquire() { PyGILState_Release(state); }
};
class gil_scoped_release {
PyThreadState *state;
public:
gil_scoped_release() { state = PyEval_SaveThread(); }
~gil_scoped_release() { PyEval_RestoreThread(state); }
};
#else
class gil_scoped_acquire { };
class gil_scoped_release { };
#endif
error_already_set::~error_already_set() {
if (type) {
gil_scoped_acquire gil;
type.release().dec_ref();
value.release().dec_ref();
trace.release().dec_ref();
}
}
inline function get_type_overload(const void *this_ptr, const detail::type_info *this_type, const char *name) {
handle self = detail::get_object_handle(this_ptr, this_type);
if (!self)
return function();
handle type = self.get_type();
auto key = std::make_pair(type.ptr(), name);
/* Cache functions that aren't overloaded in Python to avoid
many costly Python dictionary lookups below */
auto &cache = detail::get_internals().inactive_overload_cache;
if (cache.find(key) != cache.end())
return function();
function overload = getattr(self, name, function());
if (overload.is_cpp_function()) {
cache.insert(key);
return function();
}
/* Don't call dispatch code if invoked from overridden function.
Unfortunately this doesn't work on PyPy. */
#if !defined(PYPY_VERSION)
PyFrameObject *frame = PyThreadState_Get()->frame;
if (frame && (std::string) str(frame->f_code->co_name) == name &&
frame->f_code->co_argcount > 0) {
PyFrame_FastToLocals(frame);
PyObject *self_caller = PyDict_GetItem(
frame->f_locals, PyTuple_GET_ITEM(frame->f_code->co_varnames, 0));
if (self_caller == self.ptr())
return function();
}
#else
/* PyPy currently doesn't provide a detailed cpyext emulation of
frame objects, so we have to emulate this using Python. This
is going to be slow..*/
dict d; d["self"] = self; d["name"] = pybind11::str(name);
PyObject *result = PyRun_String(
"import inspect\n"
"frame = inspect.currentframe()\n"
"if frame is not None:\n"
" frame = frame.f_back\n"
" if frame is not None and str(frame.f_code.co_name) == name and "
"frame.f_code.co_argcount > 0:\n"
" self_caller = frame.f_locals[frame.f_code.co_varnames[0]]\n"
" if self_caller == self:\n"
" self = None\n",
Py_file_input, d.ptr(), d.ptr());
if (result == nullptr)
throw error_already_set();
if (d["self"].is_none())
return function();
Py_DECREF(result);
#endif
return overload;
}
template <class T> function get_overload(const T *this_ptr, const char *name) {
auto tinfo = detail::get_type_info(typeid(T));
return tinfo ? get_type_overload(this_ptr, tinfo, name) : function();
}
#define PYBIND11_OVERLOAD_INT(ret_type, cname, name, ...) { \
pybind11::gil_scoped_acquire gil; \
pybind11::function overload = pybind11::get_overload(static_cast<const cname *>(this), name); \
if (overload) { \
auto o = overload(__VA_ARGS__); \
if (pybind11::detail::cast_is_temporary_value_reference<ret_type>::value) { \
static pybind11::detail::overload_caster_t<ret_type> caster; \
return pybind11::detail::cast_ref<ret_type>(std::move(o), caster); \
} \
else return pybind11::detail::cast_safe<ret_type>(std::move(o)); \
} \
}
#define PYBIND11_OVERLOAD_NAME(ret_type, cname, name, fn, ...) \
PYBIND11_OVERLOAD_INT(ret_type, cname, name, __VA_ARGS__) \
return cname::fn(__VA_ARGS__)
#define PYBIND11_OVERLOAD_PURE_NAME(ret_type, cname, name, fn, ...) \
PYBIND11_OVERLOAD_INT(ret_type, cname, name, __VA_ARGS__) \
pybind11::pybind11_fail("Tried to call pure virtual function \"" #cname "::" name "\"");
#define PYBIND11_OVERLOAD(ret_type, cname, fn, ...) \
PYBIND11_OVERLOAD_NAME(ret_type, cname, #fn, fn, __VA_ARGS__)
#define PYBIND11_OVERLOAD_PURE(ret_type, cname, fn, ...) \
PYBIND11_OVERLOAD_PURE_NAME(ret_type, cname, #fn, fn, __VA_ARGS__)
NAMESPACE_END(pybind11)
#if defined(_MSC_VER)
# pragma warning(pop)
#elif defined(__INTEL_COMPILER)
/* Leave ignored warnings on */
#elif defined(__GNUG__) && !defined(__clang__)
# pragma GCC diagnostic pop
#endif
ppocr/postprocess/lanms/include/pybind11/pytypes.h deleted 100644 → 0
View file @ 10f7e519
/*
pybind11/typeid.h: Convenience wrapper classes for basic Python types
Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#pragma once
#include "common.h"
#include "buffer_info.h"
#include <utility>
#include <type_traits>
NAMESPACE_BEGIN(pybind11)
/* A few forward declarations */
class handle; class object;
class str; class iterator;
struct arg; struct arg_v;
NAMESPACE_BEGIN(detail)
class args_proxy;
inline bool isinstance_generic(handle obj, const std::type_info &tp);
// Accessor forward declarations
template <typename Policy> class accessor;
namespace accessor_policies {
struct obj_attr;
struct str_attr;
struct generic_item;
struct sequence_item;
struct list_item;
struct tuple_item;
}
using obj_attr_accessor = accessor<accessor_policies::obj_attr>;
using str_attr_accessor = accessor<accessor_policies::str_attr>;
using item_accessor = accessor<accessor_policies::generic_item>;
using sequence_accessor = accessor<accessor_policies::sequence_item>;
using list_accessor = accessor<accessor_policies::list_item>;
using tuple_accessor = accessor<accessor_policies::tuple_item>;
/// Tag and check to identify a class which implements the Python object API
class pyobject_tag { };
template <typename T> using is_pyobject = std::is_base_of<pyobject_tag, remove_reference_t<T>>;
/** \rst
A mixin class which adds common functions to `handle`, `object` and various accessors.
The only requirement for `Derived` is to implement ``PyObject *Derived::ptr() const``.
\endrst */
template <typename Derived>
class object_api : public pyobject_tag {
const Derived &derived() const { return static_cast<const Derived &>(*this); }
public:
/** \rst
Return an iterator equivalent to calling ``iter()`` in Python. The object
must be a collection which supports the iteration protocol.
\endrst */
iterator begin() const;
/// Return a sentinel which ends iteration.
iterator end() const;
/** \rst
Return an internal functor to invoke the object's sequence protocol. Casting
the returned ``detail::item_accessor`` instance to a `handle` or `object`
subclass causes a corresponding call to ``__getitem__``. Assigning a `handle`
or `object` subclass causes a call to ``__setitem__``.
\endrst */
item_accessor operator[](handle key) const;
/// See above (the only difference is that they key is provided as a string literal)
item_accessor operator[](const char *key) const;
/** \rst
Return an internal functor to access the object's attributes. Casting the
returned ``detail::obj_attr_accessor`` instance to a `handle` or `object`
subclass causes a corresponding call to ``getattr``. Assigning a `handle`
or `object` subclass causes a call to ``setattr``.
\endrst */
obj_attr_accessor attr(handle key) const;
/// See above (the only difference is that they key is provided as a string literal)
str_attr_accessor attr(const char *key) const;
/** \rst
Matches * unpacking in Python, e.g. to unpack arguments out of a ``tuple``
or ``list`` for a function call. Applying another * to the result yields
** unpacking, e.g. to unpack a dict as function keyword arguments.
See :ref:`calling_python_functions`.
\endrst */
args_proxy operator*() const;
/// Check if the given item is contained within this object, i.e. ``item in obj``.
template <typename T> bool contains(T &&item) const;
/** \rst
Assuming the Python object is a function or implements the ``__call__``
protocol, ``operator()`` invokes the underlying function, passing an
arbitrary set of parameters. The result is returned as a `object` and
may need to be converted back into a Python object using `handle::cast()`.
When some of the arguments cannot be converted to Python objects, the
function will throw a `cast_error` exception. When the Python function
call fails, a `error_already_set` exception is thrown.
\endrst */
template <return_value_policy policy = return_value_policy::automatic_reference, typename... Args>
object operator()(Args &&...args) const;
template <return_value_policy policy = return_value_policy::automatic_reference, typename... Args>
PYBIND11_DEPRECATED("call(...) was deprecated in favor of operator()(...)")
object call(Args&&... args) const;
/// Equivalent to ``obj is other`` in Python.
bool is(object_api const& other) const { return derived().ptr() == other.derived().ptr(); }
/// Equivalent to ``obj is None`` in Python.
bool is_none() const { return derived().ptr() == Py_None; }
PYBIND11_DEPRECATED("Use py::str(obj) instead")
pybind11::str str() const;
/// Get or set the object's docstring, i.e. ``obj.__doc__``.
str_attr_accessor doc() const;
/// Return the object's current reference count
int ref_count() const { return static_cast<int>(Py_REFCNT(derived().ptr())); }
/// Return a handle to the Python type object underlying the instance
handle get_type() const;
};
NAMESPACE_END(detail)
/** \rst
Holds a reference to a Python object (no reference counting)
The `handle` class is a thin wrapper around an arbitrary Python object (i.e. a
``PyObject *`` in Python's C API). It does not perform any automatic reference
counting and merely provides a basic C++ interface to various Python API functions.
.. seealso::
The `object` class inherits from `handle` and adds automatic reference
counting features.
\endrst */
class handle : public detail::object_api<handle> {
public:
/// The default constructor creates a handle with a ``nullptr``-valued pointer
handle() = default;
/// Creates a ``handle`` from the given raw Python object pointer
handle(PyObject *ptr) : m_ptr(ptr) { } // Allow implicit conversion from PyObject*
/// Return the underlying ``PyObject *`` pointer
PyObject *ptr() const { return m_ptr; }
PyObject *&ptr() { return m_ptr; }
/** \rst
Manually increase the reference count of the Python object. Usually, it is
preferable to use the `object` class which derives from `handle` and calls
this function automatically. Returns a reference to itself.
\endrst */
const handle& inc_ref() const & { Py_XINCREF(m_ptr); return *this; }
/** \rst
Manually decrease the reference count of the Python object. Usually, it is
preferable to use the `object` class which derives from `handle` and calls
this function automatically. Returns a reference to itself.
\endrst */
const handle& dec_ref() const & { Py_XDECREF(m_ptr); return *this; }
/** \rst
Attempt to cast the Python object into the given C++ type. A `cast_error`
will be throw upon failure.
\endrst */
template <typename T> T cast() const;
/// Return ``true`` when the `handle` wraps a valid Python object
explicit operator bool() const { return m_ptr != nullptr; }
/** \rst
Deprecated: Check that the underlying pointers are the same.
Equivalent to ``obj1 is obj2`` in Python.
\endrst */
PYBIND11_DEPRECATED("Use obj1.is(obj2) instead")
bool operator==(const handle &h) const { return m_ptr == h.m_ptr; }
PYBIND11_DEPRECATED("Use !obj1.is(obj2) instead")
bool operator!=(const handle &h) const { return m_ptr != h.m_ptr; }
PYBIND11_DEPRECATED("Use handle::operator bool() instead")
bool check() const { return m_ptr != nullptr; }
protected:
PyObject *m_ptr = nullptr;
};
/** \rst
Holds a reference to a Python object (with reference counting)
Like `handle`, the `object` class is a thin wrapper around an arbitrary Python
object (i.e. a ``PyObject *`` in Python's C API). In contrast to `handle`, it
optionally increases the object's reference count upon construction, and it
*always* decreases the reference count when the `object` instance goes out of
scope and is destructed. When using `object` instances consistently, it is much
easier to get reference counting right at the first attempt.
\endrst */
class object : public handle {
public:
object() = default;
PYBIND11_DEPRECATED("Use reinterpret_borrow<object>() or reinterpret_steal<object>()")
object(handle h, bool is_borrowed) : handle(h) { if (is_borrowed) inc_ref(); }
/// Copy constructor; always increases the reference count
object(const object &o) : handle(o) { inc_ref(); }
/// Move constructor; steals the object from ``other`` and preserves its reference count
object(object &&other) noexcept { m_ptr = other.m_ptr; other.m_ptr = nullptr; }
/// Destructor; automatically calls `handle::dec_ref()`
~object() { dec_ref(); }
/** \rst
Resets the internal pointer to ``nullptr`` without without decreasing the
object's reference count. The function returns a raw handle to the original
Python object.
\endrst */
handle release() {
PyObject *tmp = m_ptr;
m_ptr = nullptr;
return handle(tmp);
}
object& operator=(const object &other) {
other.inc_ref();
dec_ref();
m_ptr = other.m_ptr;
return *this;
}
object& operator=(object &&other) noexcept {
if (this != &other) {
handle temp(m_ptr);
m_ptr = other.m_ptr;
other.m_ptr = nullptr;
temp.dec_ref();
}
return *this;
}
// Calling cast() on an object lvalue just copies (via handle::cast)
template <typename T> T cast() const &;
// Calling on an object rvalue does a move, if needed and/or possible
template <typename T> T cast() &&;
protected:
// Tags for choosing constructors from raw PyObject *
struct borrowed_t { };
struct stolen_t { };
template <typename T> friend T reinterpret_borrow(handle);
template <typename T> friend T reinterpret_steal(handle);
public:
// Only accessible from derived classes and the reinterpret_* functions
object(handle h, borrowed_t) : handle(h) { inc_ref(); }
object(handle h, stolen_t) : handle(h) { }
};
/** \rst
Declare that a `handle` or ``PyObject *`` is a certain type and borrow the reference.
The target type ``T`` must be `object` or one of its derived classes. The function
doesn't do any conversions or checks. It's up to the user to make sure that the
target type is correct.
.. code-block:: cpp
PyObject *p = PyList_GetItem(obj, index);
py::object o = reinterpret_borrow<py::object>(p);
// or
py::tuple t = reinterpret_borrow<py::tuple>(p); // <-- `p` must be already be a `tuple`
\endrst */
template <typename T> T reinterpret_borrow(handle h) { return {h, object::borrowed_t{}}; }
/** \rst
Like `reinterpret_borrow`, but steals the reference.
.. code-block:: cpp
PyObject *p = PyObject_Str(obj);
py::str s = reinterpret_steal<py::str>(p); // <-- `p` must be already be a `str`
\endrst */
template <typename T> T reinterpret_steal(handle h) { return {h, object::stolen_t{}}; }
NAMESPACE_BEGIN(detail)
inline std::string error_string();
NAMESPACE_END(detail)
/// Fetch and hold an error which was already set in Python. An instance of this is typically
/// thrown to propagate python-side errors back through C++ which can either be caught manually or
/// else falls back to the function dispatcher (which then raises the captured error back to
/// python).
class error_already_set : public std::runtime_error {
public:
/// Constructs a new exception from the current Python error indicator, if any. The current
/// Python error indicator will be cleared.
error_already_set() : std::runtime_error(detail::error_string()) {
PyErr_Fetch(&type.ptr(), &value.ptr(), &trace.ptr());
}
inline ~error_already_set();
/// Give the currently-held error back to Python, if any. If there is currently a Python error
/// already set it is cleared first. After this call, the current object no longer stores the
/// error variables (but the `.what()` string is still available).
void restore() { PyErr_Restore(type.release().ptr(), value.release().ptr(), trace.release().ptr()); }
// Does nothing; provided for backwards compatibility.
PYBIND11_DEPRECATED("Use of error_already_set.clear() is deprecated")
void clear() {}
/// Check if the currently trapped error type matches the given Python exception class (or a
/// subclass thereof). May also be passed a tuple to search for any exception class matches in
/// the given tuple.
bool matches(handle ex) const { return PyErr_GivenExceptionMatches(ex.ptr(), type.ptr()); }
private:
object type, value, trace;
};
/** \defgroup python_builtins _
Unless stated otherwise, the following C++ functions behave the same
as their Python counterparts.
*/
/** \ingroup python_builtins
\rst
Return true if ``obj`` is an instance of ``T``. Type ``T`` must be a subclass of
`object` or a class which was exposed to Python as ``py::class_<T>``.
\endrst */
template <typename T, detail::enable_if_t<std::is_base_of<object, T>::value, int> = 0>
bool isinstance(handle obj) { return T::check_(obj); }
template <typename T, detail::enable_if_t<!std::is_base_of<object, T>::value, int> = 0>
bool isinstance(handle obj) { return detail::isinstance_generic(obj, typeid(T)); }
template <> inline bool isinstance<handle>(handle obj) = delete;
template <> inline bool isinstance<object>(handle obj) { return obj.ptr() != nullptr; }
/// \ingroup python_builtins
/// Return true if ``obj`` is an instance of the ``type``.
inline bool isinstance(handle obj, handle type) {
const auto result = PyObject_IsInstance(obj.ptr(), type.ptr());
if (result == -1)
throw error_already_set();
return result != 0;
}
/// \addtogroup python_builtins
/// @{
inline bool hasattr(handle obj, handle name) {
return PyObject_HasAttr(obj.ptr(), name.ptr()) == 1;
}
inline bool hasattr(handle obj, const char *name) {
return PyObject_HasAttrString(obj.ptr(), name) == 1;
}
inline object getattr(handle obj, handle name) {
PyObject *result = PyObject_GetAttr(obj.ptr(), name.ptr());
if (!result) { throw error_already_set(); }
return reinterpret_steal<object>(result);
}
inline object getattr(handle obj, const char *name) {
PyObject *result = PyObject_GetAttrString(obj.ptr(), name);
if (!result) { throw error_already_set(); }
return reinterpret_steal<object>(result);
}
inline object getattr(handle obj, handle name, handle default_) {
if (PyObject *result = PyObject_GetAttr(obj.ptr(), name.ptr())) {
return reinterpret_steal<object>(result);
} else {
PyErr_Clear();
return reinterpret_borrow<object>(default_);
}
}
inline object getattr(handle obj, const char *name, handle default_) {
if (PyObject *result = PyObject_GetAttrString(obj.ptr(), name)) {
return reinterpret_steal<object>(result);
} else {
PyErr_Clear();
return reinterpret_borrow<object>(default_);
}
}
inline void setattr(handle obj, handle name, handle value) {
if (PyObject_SetAttr(obj.ptr(), name.ptr(), value.ptr()) != 0) { throw error_already_set(); }
}
inline void setattr(handle obj, const char *name, handle value) {
if (PyObject_SetAttrString(obj.ptr(), name, value.ptr()) != 0) { throw error_already_set(); }
}
/// @} python_builtins
NAMESPACE_BEGIN(detail)
inline handle get_function(handle value) {
if (value) {
#if PY_MAJOR_VERSION >= 3
if (PyInstanceMethod_Check(value.ptr()))
value = PyInstanceMethod_GET_FUNCTION(value.ptr());
else
#endif
if (PyMethod_Check(value.ptr()))
value = PyMethod_GET_FUNCTION(value.ptr());
}
return value;
}
// Helper aliases/functions to support implicit casting of values given to python accessors/methods.
// When given a pyobject, this simply returns the pyobject as-is; for other C++ type, the value goes
// through pybind11::cast(obj) to convert it to an `object`.
template <typename T, enable_if_t<is_pyobject<T>::value, int> = 0>
auto object_or_cast(T &&o) -> decltype(std::forward<T>(o)) { return std::forward<T>(o); }
// The following casting version is implemented in cast.h:
template <typename T, enable_if_t<!is_pyobject<T>::value, int> = 0>
object object_or_cast(T &&o);
// Match a PyObject*, which we want to convert directly to handle via its converting constructor
inline handle object_or_cast(PyObject *ptr) { return ptr; }
template <typename Policy>
class accessor : public object_api<accessor<Policy>> {
using key_type = typename Policy::key_type;
public:
accessor(handle obj, key_type key) : obj(obj), key(std::move(key)) { }
accessor(const accessor &a) = default;
accessor(accessor &&a) = default;
// accessor overload required to override default assignment operator (templates are not allowed
// to replace default compiler-generated assignments).
void operator=(const accessor &a) && { std::move(*this).operator=(handle(a)); }
void operator=(const accessor &a) & { operator=(handle(a)); }
template <typename T> void operator=(T &&value) && {
Policy::set(obj, key, object_or_cast(std::forward<T>(value)));
}
template <typename T> void operator=(T &&value) & {
get_cache() = reinterpret_borrow<object>(object_or_cast(std::forward<T>(value)));
}
template <typename T = Policy>
PYBIND11_DEPRECATED("Use of obj.attr(...) as bool is deprecated in favor of pybind11::hasattr(obj, ...)")
explicit operator enable_if_t<std::is_same<T, accessor_policies::str_attr>::value ||
std::is_same<T, accessor_policies::obj_attr>::value, bool>() const {
return hasattr(obj, key);
}
template <typename T = Policy>
PYBIND11_DEPRECATED("Use of obj[key] as bool is deprecated in favor of obj.contains(key)")
explicit operator enable_if_t<std::is_same<T, accessor_policies::generic_item>::value, bool>() const {
return obj.contains(key);
}
operator object() const { return get_cache(); }
PyObject *ptr() const { return get_cache().ptr(); }
template <typename T> T cast() const { return get_cache().template cast<T>(); }
private:
object &get_cache() const {
if (!cache) { cache = Policy::get(obj, key); }
return cache;
}
private:
handle obj;
key_type key;
mutable object cache;
};
NAMESPACE_BEGIN(accessor_policies)
struct obj_attr {
using key_type = object;
static object get(handle obj, handle key) { return getattr(obj, key); }
static void set(handle obj, handle key, handle val) { setattr(obj, key, val); }
};
struct str_attr {
using key_type = const char *;
static object get(handle obj, const char *key) { return getattr(obj, key); }
static void set(handle obj, const char *key, handle val) { setattr(obj, key, val); }
};
struct generic_item {
using key_type = object;
static object get(handle obj, handle key) {
PyObject *result = PyObject_GetItem(obj.ptr(), key.ptr());
if (!result) { throw error_already_set(); }
return reinterpret_steal<object>(result);
}
static void set(handle obj, handle key, handle val) {
if (PyObject_SetItem(obj.ptr(), key.ptr(), val.ptr()) != 0) { throw error_already_set(); }
}
};
struct sequence_item {
using key_type = size_t;
static object get(handle obj, size_t index) {
PyObject *result = PySequence_GetItem(obj.ptr(), static_cast<ssize_t>(index));
if (!result) { throw error_already_set(); }
return reinterpret_steal<object>(result);
}
static void set(handle obj, size_t index, handle val) {
// PySequence_SetItem does not steal a reference to 'val'
if (PySequence_SetItem(obj.ptr(), static_cast<ssize_t>(index), val.ptr()) != 0) {
throw error_already_set();
}
}
};
struct list_item {
using key_type = size_t;
static object get(handle obj, size_t index) {
PyObject *result = PyList_GetItem(obj.ptr(), static_cast<ssize_t>(index));
if (!result) { throw error_already_set(); }
return reinterpret_borrow<object>(result);
}
static void set(handle obj, size_t index, handle val) {
// PyList_SetItem steals a reference to 'val'
if (PyList_SetItem(obj.ptr(), static_cast<ssize_t>(index), val.inc_ref().ptr()) != 0) {
throw error_already_set();
}
}
};
struct tuple_item {
using key_type = size_t;
static object get(handle obj, size_t index) {
PyObject *result = PyTuple_GetItem(obj.ptr(), static_cast<ssize_t>(index));
if (!result) { throw error_already_set(); }
return reinterpret_borrow<object>(result);
}
static void set(handle obj, size_t index, handle val) {
// PyTuple_SetItem steals a reference to 'val'
if (PyTuple_SetItem(obj.ptr(), static_cast<ssize_t>(index), val.inc_ref().ptr()) != 0) {
throw error_already_set();
}
}
};
NAMESPACE_END(accessor_policies)
/// STL iterator template used for tuple, list, sequence and dict
template <typename Policy>
class generic_iterator : public Policy {
using It = generic_iterator;
public:
using difference_type = ssize_t;
using iterator_category = typename Policy::iterator_category;
using value_type = typename Policy::value_type;
using reference = typename Policy::reference;
using pointer = typename Policy::pointer;
generic_iterator() = default;
generic_iterator(handle seq, ssize_t index) : Policy(seq, index) { }
reference operator*() const { return Policy::dereference(); }
reference operator[](difference_type n) const { return *(*this + n); }
pointer operator->() const { return **this; }
It &operator++() { Policy::increment(); return *this; }
It operator++(int) { auto copy = *this; Policy::increment(); return copy; }
It &operator--() { Policy::decrement(); return *this; }
It operator--(int) { auto copy = *this; Policy::decrement(); return copy; }
It &operator+=(difference_type n) { Policy::advance(n); return *this; }
It &operator-=(difference_type n) { Policy::advance(-n); return *this; }
friend It operator+(const It &a, difference_type n) { auto copy = a; return copy += n; }
friend It operator+(difference_type n, const It &b) { return b + n; }
friend It operator-(const It &a, difference_type n) { auto copy = a; return copy -= n; }
friend difference_type operator-(const It &a, const It &b) { return a.distance_to(b); }
friend bool operator==(const It &a, const It &b) { return a.equal(b); }
friend bool operator!=(const It &a, const It &b) { return !(a == b); }
friend bool operator< (const It &a, const It &b) { return b - a > 0; }
friend bool operator> (const It &a, const It &b) { return b < a; }
friend bool operator>=(const It &a, const It &b) { return !(a < b); }
friend bool operator<=(const It &a, const It &b) { return !(a > b); }
};
NAMESPACE_BEGIN(iterator_policies)
/// Quick proxy class needed to implement ``operator->`` for iterators which can't return pointers
template <typename T>
struct arrow_proxy {
T value;
arrow_proxy(T &&value) : value(std::move(value)) { }
T *operator->() const { return &value; }
};
/// Lightweight iterator policy using just a simple pointer: see ``PySequence_Fast_ITEMS``
class sequence_fast_readonly {
protected:
using iterator_category = std::random_access_iterator_tag;
using value_type = handle;
using reference = const handle;
using pointer = arrow_proxy<const handle>;
sequence_fast_readonly(handle obj, ssize_t n) : ptr(PySequence_Fast_ITEMS(obj.ptr()) + n) { }
reference dereference() const { return *ptr; }
void increment() { ++ptr; }
void decrement() { --ptr; }
void advance(ssize_t n) { ptr += n; }
bool equal(const sequence_fast_readonly &b) const { return ptr == b.ptr; }
ssize_t distance_to(const sequence_fast_readonly &b) const { return ptr - b.ptr; }
private:
PyObject **ptr;
};
/// Full read and write access using the sequence protocol: see ``detail::sequence_accessor``
class sequence_slow_readwrite {
protected:
using iterator_category = std::random_access_iterator_tag;
using value_type = object;
using reference = sequence_accessor;
using pointer = arrow_proxy<const sequence_accessor>;
sequence_slow_readwrite(handle obj, ssize_t index) : obj(obj), index(index) { }
reference dereference() const { return {obj, static_cast<size_t>(index)}; }
void increment() { ++index; }
void decrement() { --index; }
void advance(ssize_t n) { index += n; }
bool equal(const sequence_slow_readwrite &b) const { return index == b.index; }
ssize_t distance_to(const sequence_slow_readwrite &b) const { return index - b.index; }
private:
handle obj;
ssize_t index;
};
/// Python's dictionary protocol permits this to be a forward iterator
class dict_readonly {
protected:
using iterator_category = std::forward_iterator_tag;
using value_type = std::pair<handle, handle>;
using reference = const value_type;
using pointer = arrow_proxy<const value_type>;
dict_readonly() = default;
dict_readonly(handle obj, ssize_t pos) : obj(obj), pos(pos) { increment(); }
reference dereference() const { return {key, value}; }
void increment() { if (!PyDict_Next(obj.ptr(), &pos, &key, &value)) { pos = -1; } }
bool equal(const dict_readonly &b) const { return pos == b.pos; }
private:
handle obj;
PyObject *key, *value;
ssize_t pos = -1;
};
NAMESPACE_END(iterator_policies)
#if !defined(PYPY_VERSION)
using tuple_iterator = generic_iterator<iterator_policies::sequence_fast_readonly>;
using list_iterator = generic_iterator<iterator_policies::sequence_fast_readonly>;
#else
using tuple_iterator = generic_iterator<iterator_policies::sequence_slow_readwrite>;
using list_iterator = generic_iterator<iterator_policies::sequence_slow_readwrite>;
#endif
using sequence_iterator = generic_iterator<iterator_policies::sequence_slow_readwrite>;
using dict_iterator = generic_iterator<iterator_policies::dict_readonly>;
inline bool PyIterable_Check(PyObject *obj) {
PyObject *iter = PyObject_GetIter(obj);
if (iter) {
Py_DECREF(iter);
return true;
} else {
PyErr_Clear();
return false;
}
}
inline bool PyNone_Check(PyObject *o) { return o == Py_None; }
inline bool PyUnicode_Check_Permissive(PyObject *o) { return PyUnicode_Check(o) || PYBIND11_BYTES_CHECK(o); }
class kwargs_proxy : public handle {
public:
explicit kwargs_proxy(handle h) : handle(h) { }
};
class args_proxy : public handle {
public:
explicit args_proxy(handle h) : handle(h) { }
kwargs_proxy operator*() const { return kwargs_proxy(*this); }
};
/// Python argument categories (using PEP 448 terms)
template <typename T> using is_keyword = std::is_base_of<arg, T>;
template <typename T> using is_s_unpacking = std::is_same<args_proxy, T>; // * unpacking
template <typename T> using is_ds_unpacking = std::is_same<kwargs_proxy, T>; // ** unpacking
template <typename T> using is_positional = satisfies_none_of<T,
is_keyword, is_s_unpacking, is_ds_unpacking
>;
template <typename T> using is_keyword_or_ds = satisfies_any_of<T, is_keyword, is_ds_unpacking>;
// Call argument collector forward declarations
template <return_value_policy policy = return_value_policy::automatic_reference>
class simple_collector;
template <return_value_policy policy = return_value_policy::automatic_reference>
class unpacking_collector;
NAMESPACE_END(detail)
// TODO: After the deprecated constructors are removed, this macro can be simplified by
// inheriting ctors: `using Parent::Parent`. It's not an option right now because
// the `using` statement triggers the parent deprecation warning even if the ctor
// isn't even used.
#define PYBIND11_OBJECT_COMMON(Name, Parent, CheckFun) \
public: \
PYBIND11_DEPRECATED("Use reinterpret_borrow<"#Name">() or reinterpret_steal<"#Name">()") \
Name(handle h, bool is_borrowed) : Parent(is_borrowed ? Parent(h, borrowed_t{}) : Parent(h, stolen_t{})) { } \
Name(handle h, borrowed_t) : Parent(h, borrowed_t{}) { } \
Name(handle h, stolen_t) : Parent(h, stolen_t{}) { } \
PYBIND11_DEPRECATED("Use py::isinstance<py::python_type>(obj) instead") \
bool check() const { return m_ptr != nullptr && (bool) CheckFun(m_ptr); } \
static bool check_(handle h) { return h.ptr() != nullptr && CheckFun(h.ptr()); }
#define PYBIND11_OBJECT_CVT(Name, Parent, CheckFun, ConvertFun) \
PYBIND11_OBJECT_COMMON(Name, Parent, CheckFun) \
/* This is deliberately not 'explicit' to allow implicit conversion from object: */ \
Name(const object &o) : Parent(ConvertFun(o.ptr()), stolen_t{}) { if (!m_ptr) throw error_already_set(); }
#define PYBIND11_OBJECT(Name, Parent, CheckFun) \
PYBIND11_OBJECT_COMMON(Name, Parent, CheckFun) \
/* This is deliberately not 'explicit' to allow implicit conversion from object: */ \
Name(const object &o) : Parent(o) { } \
Name(object &&o) : Parent(std::move(o)) { }
#define PYBIND11_OBJECT_DEFAULT(Name, Parent, CheckFun) \
PYBIND11_OBJECT(Name, Parent, CheckFun) \
Name() : Parent() { }
/// \addtogroup pytypes
/// @{
/** \rst
Wraps a Python iterator so that it can also be used as a C++ input iterator
Caveat: copying an iterator does not (and cannot) clone the internal
state of the Python iterable. This also applies to the post-increment
operator. This iterator should only be used to retrieve the current
value using ``operator*()``.
\endrst */
class iterator : public object {
public:
using iterator_category = std::input_iterator_tag;
using difference_type = ssize_t;
using value_type = handle;
using reference = const handle;
using pointer = const handle *;
PYBIND11_OBJECT_DEFAULT(iterator, object, PyIter_Check)
iterator& operator++() {
advance();
return *this;
}
iterator operator++(int) {
auto rv = *this;
advance();
return rv;
}
reference operator*() const {
if (m_ptr && !value.ptr()) {
auto& self = const_cast<iterator &>(*this);
self.advance();
}
return value;
}
pointer operator->() const { operator*(); return &value; }
/** \rst
The value which marks the end of the iteration. ``it == iterator::sentinel()``
is equivalent to catching ``StopIteration`` in Python.
.. code-block:: cpp
void foo(py::iterator it) {
while (it != py::iterator::sentinel()) {
// use `*it`
++it;
}
}
\endrst */
static iterator sentinel() { return {}; }
friend bool operator==(const iterator &a, const iterator &b) { return a->ptr() == b->ptr(); }
friend bool operator!=(const iterator &a, const iterator &b) { return a->ptr() != b->ptr(); }
private:
void advance() {
value = reinterpret_steal<object>(PyIter_Next(m_ptr));
if (PyErr_Occurred()) { throw error_already_set(); }
}
private:
object value = {};
};
class iterable : public object {
public:
PYBIND11_OBJECT_DEFAULT(iterable, object, detail::PyIterable_Check)
};
class bytes;
class str : public object {
public:
PYBIND11_OBJECT_CVT(str, object, detail::PyUnicode_Check_Permissive, raw_str)
str(const char *c, size_t n)
: object(PyUnicode_FromStringAndSize(c, (ssize_t) n), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate string object!");
}
// 'explicit' is explicitly omitted from the following constructors to allow implicit conversion to py::str from C++ string-like objects
str(const char *c = "")
: object(PyUnicode_FromString(c), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate string object!");
}
str(const std::string &s) : str(s.data(), s.size()) { }
explicit str(const bytes &b);
/** \rst
Return a string representation of the object. This is analogous to
the ``str()`` function in Python.
\endrst */
explicit str(handle h) : object(raw_str(h.ptr()), stolen_t{}) { }
operator std::string() const {
object temp = *this;
if (PyUnicode_Check(m_ptr)) {
temp = reinterpret_steal<object>(PyUnicode_AsUTF8String(m_ptr));
if (!temp)
pybind11_fail("Unable to extract string contents! (encoding issue)");
}
char *buffer;
ssize_t length;
if (PYBIND11_BYTES_AS_STRING_AND_SIZE(temp.ptr(), &buffer, &length))
pybind11_fail("Unable to extract string contents! (invalid type)");
return std::string(buffer, (size_t) length);
}
template <typename... Args>
str format(Args &&...args) const {
return attr("format")(std::forward<Args>(args)...);
}
private:
/// Return string representation -- always returns a new reference, even if already a str
static PyObject *raw_str(PyObject *op) {
PyObject *str_value = PyObject_Str(op);
#if PY_MAJOR_VERSION < 3
if (!str_value) throw error_already_set();
PyObject *unicode = PyUnicode_FromEncodedObject(str_value, "utf-8", nullptr);
Py_XDECREF(str_value); str_value = unicode;
#endif
return str_value;
}
};
/// @} pytypes
inline namespace literals {
/** \rst
String literal version of `str`
\endrst */
inline str operator"" _s(const char *s, size_t size) { return {s, size}; }
}
/// \addtogroup pytypes
/// @{
class bytes : public object {
public:
PYBIND11_OBJECT(bytes, object, PYBIND11_BYTES_CHECK)
// Allow implicit conversion:
bytes(const char *c = "")
: object(PYBIND11_BYTES_FROM_STRING(c), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate bytes object!");
}
bytes(const char *c, size_t n)
: object(PYBIND11_BYTES_FROM_STRING_AND_SIZE(c, (ssize_t) n), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate bytes object!");
}
// Allow implicit conversion:
bytes(const std::string &s) : bytes(s.data(), s.size()) { }
explicit bytes(const pybind11::str &s);
operator std::string() const {
char *buffer;
ssize_t length;
if (PYBIND11_BYTES_AS_STRING_AND_SIZE(m_ptr, &buffer, &length))
pybind11_fail("Unable to extract bytes contents!");
return std::string(buffer, (size_t) length);
}
};
inline bytes::bytes(const pybind11::str &s) {
object temp = s;
if (PyUnicode_Check(s.ptr())) {
temp = reinterpret_steal<object>(PyUnicode_AsUTF8String(s.ptr()));
if (!temp)
pybind11_fail("Unable to extract string contents! (encoding issue)");
}
char *buffer;
ssize_t length;
if (PYBIND11_BYTES_AS_STRING_AND_SIZE(temp.ptr(), &buffer, &length))
pybind11_fail("Unable to extract string contents! (invalid type)");
auto obj = reinterpret_steal<object>(PYBIND11_BYTES_FROM_STRING_AND_SIZE(buffer, length));
if (!obj)
pybind11_fail("Could not allocate bytes object!");
m_ptr = obj.release().ptr();
}
inline str::str(const bytes& b) {
char *buffer;
ssize_t length;
if (PYBIND11_BYTES_AS_STRING_AND_SIZE(b.ptr(), &buffer, &length))
pybind11_fail("Unable to extract bytes contents!");
auto obj = reinterpret_steal<object>(PyUnicode_FromStringAndSize(buffer, (ssize_t) length));
if (!obj)
pybind11_fail("Could not allocate string object!");
m_ptr = obj.release().ptr();
}
class none : public object {
public:
PYBIND11_OBJECT(none, object, detail::PyNone_Check)
none() : object(Py_None, borrowed_t{}) { }
};
class bool_ : public object {
public:
PYBIND11_OBJECT_CVT(bool_, object, PyBool_Check, raw_bool)
bool_() : object(Py_False, borrowed_t{}) { }
// Allow implicit conversion from and to `bool`:
bool_(bool value) : object(value ? Py_True : Py_False, borrowed_t{}) { }
operator bool() const { return m_ptr && PyLong_AsLong(m_ptr) != 0; }
private:
/// Return the truth value of an object -- always returns a new reference
static PyObject *raw_bool(PyObject *op) {
const auto value = PyObject_IsTrue(op);
if (value == -1) return nullptr;
return handle(value ? Py_True : Py_False).inc_ref().ptr();
}
};
NAMESPACE_BEGIN(detail)
// Converts a value to the given unsigned type. If an error occurs, you get back (Unsigned) -1;
// otherwise you get back the unsigned long or unsigned long long value cast to (Unsigned).
// (The distinction is critically important when casting a returned -1 error value to some other
// unsigned type: (A)-1 != (B)-1 when A and B are unsigned types of different sizes).
template <typename Unsigned>
Unsigned as_unsigned(PyObject *o) {
if (sizeof(Unsigned) <= sizeof(unsigned long)
#if PY_VERSION_HEX < 0x03000000
|| PyInt_Check(o)
#endif
) {
unsigned long v = PyLong_AsUnsignedLong(o);
return v == (unsigned long) -1 && PyErr_Occurred() ? (Unsigned) -1 : (Unsigned) v;
}
else {
unsigned long long v = PyLong_AsUnsignedLongLong(o);
return v == (unsigned long long) -1 && PyErr_Occurred() ? (Unsigned) -1 : (Unsigned) v;
}
}
NAMESPACE_END(detail)
class int_ : public object {
public:
PYBIND11_OBJECT_CVT(int_, object, PYBIND11_LONG_CHECK, PyNumber_Long)
int_() : object(PyLong_FromLong(0), stolen_t{}) { }
// Allow implicit conversion from C++ integral types:
template <typename T,
detail::enable_if_t<std::is_integral<T>::value, int> = 0>
int_(T value) {
if (sizeof(T) <= sizeof(long)) {
if (std::is_signed<T>::value)
m_ptr = PyLong_FromLong((long) value);
else
m_ptr = PyLong_FromUnsignedLong((unsigned long) value);
} else {
if (std::is_signed<T>::value)
m_ptr = PyLong_FromLongLong((long long) value);
else
m_ptr = PyLong_FromUnsignedLongLong((unsigned long long) value);
}
if (!m_ptr) pybind11_fail("Could not allocate int object!");
}
template <typename T,
detail::enable_if_t<std::is_integral<T>::value, int> = 0>
operator T() const {
return std::is_unsigned<T>::value
? detail::as_unsigned<T>(m_ptr)
: sizeof(T) <= sizeof(long)
? (T) PyLong_AsLong(m_ptr)
: (T) PYBIND11_LONG_AS_LONGLONG(m_ptr);
}
};
class float_ : public object {
public:
PYBIND11_OBJECT_CVT(float_, object, PyFloat_Check, PyNumber_Float)
// Allow implicit conversion from float/double:
float_(float value) : object(PyFloat_FromDouble((double) value), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate float object!");
}
float_(double value = .0) : object(PyFloat_FromDouble((double) value), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate float object!");
}
operator float() const { return (float) PyFloat_AsDouble(m_ptr); }
operator double() const { return (double) PyFloat_AsDouble(m_ptr); }
};
class weakref : public object {
public:
PYBIND11_OBJECT_DEFAULT(weakref, object, PyWeakref_Check)
explicit weakref(handle obj, handle callback = {})
: object(PyWeakref_NewRef(obj.ptr(), callback.ptr()), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate weak reference!");
}
};
class slice : public object {
public:
PYBIND11_OBJECT_DEFAULT(slice, object, PySlice_Check)
slice(ssize_t start_, ssize_t stop_, ssize_t step_) {
int_ start(start_), stop(stop_), step(step_);
m_ptr = PySlice_New(start.ptr(), stop.ptr(), step.ptr());
if (!m_ptr) pybind11_fail("Could not allocate slice object!");
}
bool compute(size_t length, size_t *start, size_t *stop, size_t *step,
size_t *slicelength) const {
return PySlice_GetIndicesEx((PYBIND11_SLICE_OBJECT *) m_ptr,
(ssize_t) length, (ssize_t *) start,
(ssize_t *) stop, (ssize_t *) step,
(ssize_t *) slicelength) == 0;
}
};
class capsule : public object {
public:
PYBIND11_OBJECT_DEFAULT(capsule, object, PyCapsule_CheckExact)
PYBIND11_DEPRECATED("Use reinterpret_borrow<capsule>() or reinterpret_steal<capsule>()")
capsule(PyObject *ptr, bool is_borrowed) : object(is_borrowed ? object(ptr, borrowed_t{}) : object(ptr, stolen_t{})) { }
explicit capsule(const void *value, const char *name = nullptr, void (*destructor)(PyObject *) = nullptr)
: object(PyCapsule_New(const_cast<void *>(value), name, destructor), stolen_t{}) {
if (!m_ptr)
pybind11_fail("Could not allocate capsule object!");
}
PYBIND11_DEPRECATED("Please pass a destructor that takes a void pointer as input")
capsule(const void *value, void (*destruct)(PyObject *))
: object(PyCapsule_New(const_cast<void*>(value), nullptr, destruct), stolen_t{}) {
if (!m_ptr)
pybind11_fail("Could not allocate capsule object!");
}
capsule(const void *value, void (*destructor)(void *)) {
m_ptr = PyCapsule_New(const_cast<void *>(value), nullptr, [](PyObject *o) {
auto destructor = reinterpret_cast<void (*)(void *)>(PyCapsule_GetContext(o));
void *ptr = PyCapsule_GetPointer(o, nullptr);
destructor(ptr);
});
if (!m_ptr)
pybind11_fail("Could not allocate capsule object!");
if (PyCapsule_SetContext(m_ptr, (void *) destructor) != 0)
pybind11_fail("Could not set capsule context!");
}
capsule(void (*destructor)()) {
m_ptr = PyCapsule_New(reinterpret_cast<void *>(destructor), nullptr, [](PyObject *o) {
auto destructor = reinterpret_cast<void (*)()>(PyCapsule_GetPointer(o, nullptr));
destructor();
});
if (!m_ptr)
pybind11_fail("Could not allocate capsule object!");
}
template <typename T> operator T *() const {
auto name = this->name();
T * result = static_cast<T *>(PyCapsule_GetPointer(m_ptr, name));
if (!result) pybind11_fail("Unable to extract capsule contents!");
return result;
}
const char *name() const { return PyCapsule_GetName(m_ptr); }
};
class tuple : public object {
public:
PYBIND11_OBJECT_CVT(tuple, object, PyTuple_Check, PySequence_Tuple)
explicit tuple(size_t size = 0) : object(PyTuple_New((ssize_t) size), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate tuple object!");
}
size_t size() const { return (size_t) PyTuple_Size(m_ptr); }
detail::tuple_accessor operator[](size_t index) const { return {*this, index}; }
detail::tuple_iterator begin() const { return {*this, 0}; }
detail::tuple_iterator end() const { return {*this, PyTuple_GET_SIZE(m_ptr)}; }
};
class dict : public object {
public:
PYBIND11_OBJECT_CVT(dict, object, PyDict_Check, raw_dict)
dict() : object(PyDict_New(), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate dict object!");
}
template <typename... Args,
typename = detail::enable_if_t<detail::all_of<detail::is_keyword_or_ds<Args>...>::value>,
// MSVC workaround: it can't compile an out-of-line definition, so defer the collector
typename collector = detail::deferred_t<detail::unpacking_collector<>, Args...>>
explicit dict(Args &&...args) : dict(collector(std::forward<Args>(args)...).kwargs()) { }
size_t size() const { return (size_t) PyDict_Size(m_ptr); }
detail::dict_iterator begin() const { return {*this, 0}; }
detail::dict_iterator end() const { return {}; }
void clear() const { PyDict_Clear(ptr()); }
bool contains(handle key) const { return PyDict_Contains(ptr(), key.ptr()) == 1; }
bool contains(const char *key) const { return PyDict_Contains(ptr(), pybind11::str(key).ptr()) == 1; }
private:
/// Call the `dict` Python type -- always returns a new reference
static PyObject *raw_dict(PyObject *op) {
if (PyDict_Check(op))
return handle(op).inc_ref().ptr();
return PyObject_CallFunctionObjArgs((PyObject *) &PyDict_Type, op, nullptr);
}
};
class sequence : public object {
public:
PYBIND11_OBJECT_DEFAULT(sequence, object, PySequence_Check)
size_t size() const { return (size_t) PySequence_Size(m_ptr); }
detail::sequence_accessor operator[](size_t index) const { return {*this, index}; }
detail::sequence_iterator begin() const { return {*this, 0}; }
detail::sequence_iterator end() const { return {*this, PySequence_Size(m_ptr)}; }
};
class list : public object {
public:
PYBIND11_OBJECT_CVT(list, object, PyList_Check, PySequence_List)
explicit list(size_t size = 0) : object(PyList_New((ssize_t) size), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate list object!");
}
size_t size() const { return (size_t) PyList_Size(m_ptr); }
detail::list_accessor operator[](size_t index) const { return {*this, index}; }
detail::list_iterator begin() const { return {*this, 0}; }
detail::list_iterator end() const { return {*this, PyList_GET_SIZE(m_ptr)}; }
template <typename T> void append(T &&val) const {
PyList_Append(m_ptr, detail::object_or_cast(std::forward<T>(val)).ptr());
}
};
class args : public tuple { PYBIND11_OBJECT_DEFAULT(args, tuple, PyTuple_Check) };
class kwargs : public dict { PYBIND11_OBJECT_DEFAULT(kwargs, dict, PyDict_Check) };
class set : public object {
public:
PYBIND11_OBJECT_CVT(set, object, PySet_Check, PySet_New)
set() : object(PySet_New(nullptr), stolen_t{}) {
if (!m_ptr) pybind11_fail("Could not allocate set object!");
}
size_t size() const { return (size_t) PySet_Size(m_ptr); }
template <typename T> bool add(T &&val) const {
return PySet_Add(m_ptr, detail::object_or_cast(std::forward<T>(val)).ptr()) == 0;
}
void clear() const { PySet_Clear(m_ptr); }
};
class function : public object {
public:
PYBIND11_OBJECT_DEFAULT(function, object, PyCallable_Check)
handle cpp_function() const {
handle fun = detail::get_function(m_ptr);
if (fun && PyCFunction_Check(fun.ptr()))
return fun;
return handle();
}
bool is_cpp_function() const { return (bool) cpp_function(); }
};
class buffer : public object {
public:
PYBIND11_OBJECT_DEFAULT(buffer, object, PyObject_CheckBuffer)
buffer_info request(bool writable = false) {
int flags = PyBUF_STRIDES | PyBUF_FORMAT;
if (writable) flags |= PyBUF_WRITABLE;
Py_buffer *view = new Py_buffer();
if (PyObject_GetBuffer(m_ptr, view, flags) != 0) {
delete view;
throw error_already_set();
}
return buffer_info(view);
}
};
class memoryview : public object {
public:
explicit memoryview(const buffer_info& info) {
static Py_buffer buf { };
// Py_buffer uses signed sizes, strides and shape!..
static std::vector<Py_ssize_t> py_strides { };
static std::vector<Py_ssize_t> py_shape { };
buf.buf = info.ptr;
buf.itemsize = info.itemsize;
buf.format = const_cast<char *>(info.format.c_str());
buf.ndim = (int) info.ndim;
buf.len = info.size;
py_strides.clear();
py_shape.clear();
for (size_t i = 0; i < (size_t) info.ndim; ++i) {
py_strides.push_back(info.strides[i]);
py_shape.push_back(info.shape[i]);
}
buf.strides = py_strides.data();
buf.shape = py_shape.data();
buf.suboffsets = nullptr;
buf.readonly = false;
buf.internal = nullptr;
m_ptr = PyMemoryView_FromBuffer(&buf);
if (!m_ptr)
pybind11_fail("Unable to create memoryview from buffer descriptor");
}
PYBIND11_OBJECT_CVT(memoryview, object, PyMemoryView_Check, PyMemoryView_FromObject)
};
/// @} pytypes
/// \addtogroup python_builtins
/// @{
inline size_t len(handle h) {
ssize_t result = PyObject_Length(h.ptr());
if (result < 0)
pybind11_fail("Unable to compute length of object");
return (size_t) result;
}
inline str repr(handle h) {
PyObject *str_value = PyObject_Repr(h.ptr());
if (!str_value) throw error_already_set();
#if PY_MAJOR_VERSION < 3
PyObject *unicode = PyUnicode_FromEncodedObject(str_value, "utf-8", nullptr);
Py_XDECREF(str_value); str_value = unicode;
if (!str_value) throw error_already_set();
#endif
return reinterpret_steal<str>(str_value);
}
inline iterator iter(handle obj) {
PyObject *result = PyObject_GetIter(obj.ptr());
if (!result) { throw error_already_set(); }
return reinterpret_steal<iterator>(result);
}
/// @} python_builtins
NAMESPACE_BEGIN(detail)
template <typename D> iterator object_api<D>::begin() const { return iter(derived()); }
template <typename D> iterator object_api<D>::end() const { return iterator::sentinel(); }
template <typename D> item_accessor object_api<D>::operator[](handle key) const {
return {derived(), reinterpret_borrow<object>(key)};
}
template <typename D> item_accessor object_api<D>::operator[](const char *key) const {
return {derived(), pybind11::str(key)};
}
template <typename D> obj_attr_accessor object_api<D>::attr(handle key) const {
return {derived(), reinterpret_borrow<object>(key)};
}
template <typename D> str_attr_accessor object_api<D>::attr(const char *key) const {
return {derived(), key};
}
template <typename D> args_proxy object_api<D>::operator*() const {
return args_proxy(derived().ptr());
}
template <typename D> template <typename T> bool object_api<D>::contains(T &&item) const {
return attr("__contains__")(std::forward<T>(item)).template cast<bool>();
}
template <typename D>
pybind11::str object_api<D>::str() const { return pybind11::str(derived()); }
template <typename D>
str_attr_accessor object_api<D>::doc() const { return attr("__doc__"); }
template <typename D>
handle object_api<D>::get_type() const { return (PyObject *) Py_TYPE(derived().ptr()); }
NAMESPACE_END(detail)
NAMESPACE_END(pybind11)
ppocr/postprocess/lanms/include/pybind11/stl.h deleted 100644 → 0
View file @ 10f7e519
/*
pybind11/stl.h: Transparent conversion for STL data types
Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#pragma once
#include "pybind11.h"
#include <set>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <iostream>
#include <list>
#include <valarray>
#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable: 4127) // warning C4127: Conditional expression is constant
#endif
#ifdef __has_include
// std::optional (but including it in c++14 mode isn't allowed)
# if defined(PYBIND11_CPP17) && __has_include(<optional>)
# include <optional>
# define PYBIND11_HAS_OPTIONAL 1
# endif
// std::experimental::optional (but not allowed in c++11 mode)
# if defined(PYBIND11_CPP14) && __has_include(<experimental/optional>)
# include <experimental/optional>
# define PYBIND11_HAS_EXP_OPTIONAL 1
# endif
// std::variant
# if defined(PYBIND11_CPP17) && __has_include(<variant>)
# include <variant>
# define PYBIND11_HAS_VARIANT 1
# endif
#elif defined(_MSC_VER) && defined(PYBIND11_CPP17)
# include <optional>
# include <variant>
# define PYBIND11_HAS_OPTIONAL 1
# define PYBIND11_HAS_VARIANT 1
#endif
NAMESPACE_BEGIN(pybind11)
NAMESPACE_BEGIN(detail)
/// Extracts an const lvalue reference or rvalue reference for U based on the type of T (e.g. for
/// forwarding a container element). Typically used indirect via forwarded_type(), below.
template <typename T, typename U>
using forwarded_type = conditional_t<
std::is_lvalue_reference<T>::value, remove_reference_t<U> &, remove_reference_t<U> &&>;
/// Forwards a value U as rvalue or lvalue according to whether T is rvalue or lvalue; typically
/// used for forwarding a container's elements.
template <typename T, typename U>
forwarded_type<T, U> forward_like(U &&u) {
return std::forward<detail::forwarded_type<T, U>>(std::forward<U>(u));
}
template <typename Type, typename Key> struct set_caster {
using type = Type;
using key_conv = make_caster<Key>;
bool load(handle src, bool convert) {
if (!isinstance<pybind11::set>(src))
return false;
auto s = reinterpret_borrow<pybind11::set>(src);
value.clear();
for (auto entry : s) {
key_conv conv;
if (!conv.load(entry, convert))
return false;
value.insert(cast_op<Key &&>(std::move(conv)));
}
return true;
}
template <typename T>
static handle cast(T &&src, return_value_policy policy, handle parent) {
pybind11::set s;
for (auto &value: src) {
auto value_ = reinterpret_steal<object>(key_conv::cast(forward_like<T>(value), policy, parent));
if (!value_ || !s.add(value_))
return handle();
}
return s.release();
}
PYBIND11_TYPE_CASTER(type, _("Set[") + key_conv::name() + _("]"));
};
template <typename Type, typename Key, typename Value> struct map_caster {
using key_conv = make_caster<Key>;
using value_conv = make_caster<Value>;
bool load(handle src, bool convert) {
if (!isinstance<dict>(src))
return false;
auto d = reinterpret_borrow<dict>(src);
value.clear();
for (auto it : d) {
key_conv kconv;
value_conv vconv;
if (!kconv.load(it.first.ptr(), convert) ||
!vconv.load(it.second.ptr(), convert))
return false;
value.emplace(cast_op<Key &&>(std::move(kconv)), cast_op<Value &&>(std::move(vconv)));
}
return true;
}
template <typename T>
static handle cast(T &&src, return_value_policy policy, handle parent) {
dict d;
for (auto &kv: src) {
auto key = reinterpret_steal<object>(key_conv::cast(forward_like<T>(kv.first), policy, parent));
auto value = reinterpret_steal<object>(value_conv::cast(forward_like<T>(kv.second), policy, parent));
if (!key || !value)
return handle();
d[key] = value;
}
return d.release();
}
PYBIND11_TYPE_CASTER(Type, _("Dict[") + key_conv::name() + _(", ") + value_conv::name() + _("]"));
};
template <typename Type, typename Value> struct list_caster {
using value_conv = make_caster<Value>;
bool load(handle src, bool convert) {
if (!isinstance<sequence>(src))
return false;
auto s = reinterpret_borrow<sequence>(src);
value.clear();
reserve_maybe(s, &value);
for (auto it : s) {
value_conv conv;
if (!conv.load(it, convert))
return false;
value.push_back(cast_op<Value &&>(std::move(conv)));
}
return true;
}
private:
template <typename T = Type,
enable_if_t<std::is_same<decltype(std::declval<T>().reserve(0)), void>::value, int> = 0>
void reserve_maybe(sequence s, Type *) { value.reserve(s.size()); }
void reserve_maybe(sequence, void *) { }
public:
template <typename T>
static handle cast(T &&src, return_value_policy policy, handle parent) {
list l(src.size());
size_t index = 0;
for (auto &value: src) {
auto value_ = reinterpret_steal<object>(value_conv::cast(forward_like<T>(value), policy, parent));
if (!value_)
return handle();
PyList_SET_ITEM(l.ptr(), (ssize_t) index++, value_.release().ptr()); // steals a reference
}
return l.release();
}
PYBIND11_TYPE_CASTER(Type, _("List[") + value_conv::name() + _("]"));
};
template <typename Type, typename Alloc> struct type_caster<std::vector<Type, Alloc>>
: list_caster<std::vector<Type, Alloc>, Type> { };
template <typename Type, typename Alloc> struct type_caster<std::list<Type, Alloc>>
: list_caster<std::list<Type, Alloc>, Type> { };
template <typename ArrayType, typename Value, bool Resizable, size_t Size = 0> struct array_caster {
using value_conv = make_caster<Value>;
private:
template <bool R = Resizable>
bool require_size(enable_if_t<R, size_t> size) {
if (value.size() != size)
value.resize(size);
return true;
}
template <bool R = Resizable>
bool require_size(enable_if_t<!R, size_t> size) {
return size == Size;
}
public:
bool load(handle src, bool convert) {
if (!isinstance<list>(src))
return false;
auto l = reinterpret_borrow<list>(src);
if (!require_size(l.size()))
return false;
size_t ctr = 0;
for (auto it : l) {
value_conv conv;
if (!conv.load(it, convert))
return false;
value[ctr++] = cast_op<Value &&>(std::move(conv));
}
return true;
}
template <typename T>
static handle cast(T &&src, return_value_policy policy, handle parent) {
list l(src.size());
size_t index = 0;
for (auto &value: src) {
auto value_ = reinterpret_steal<object>(value_conv::cast(forward_like<T>(value), policy, parent));
if (!value_)
return handle();
PyList_SET_ITEM(l.ptr(), (ssize_t) index++, value_.release().ptr()); // steals a reference
}
return l.release();
}
PYBIND11_TYPE_CASTER(ArrayType, _("List[") + value_conv::name() + _<Resizable>(_(""), _("[") + _<Size>() + _("]")) + _("]"));
};
template <typename Type, size_t Size> struct type_caster<std::array<Type, Size>>
: array_caster<std::array<Type, Size>, Type, false, Size> { };
template <typename Type> struct type_caster<std::valarray<Type>>
: array_caster<std::valarray<Type>, Type, true> { };
template <typename Key, typename Compare, typename Alloc> struct type_caster<std::set<Key, Compare, Alloc>>
: set_caster<std::set<Key, Compare, Alloc>, Key> { };
template <typename Key, typename Hash, typename Equal, typename Alloc> struct type_caster<std::unordered_set<Key, Hash, Equal, Alloc>>
: set_caster<std::unordered_set<Key, Hash, Equal, Alloc>, Key> { };
template <typename Key, typename Value, typename Compare, typename Alloc> struct type_caster<std::map<Key, Value, Compare, Alloc>>
: map_caster<std::map<Key, Value, Compare, Alloc>, Key, Value> { };
template <typename Key, typename Value, typename Hash, typename Equal, typename Alloc> struct type_caster<std::unordered_map<Key, Value, Hash, Equal, Alloc>>
: map_caster<std::unordered_map<Key, Value, Hash, Equal, Alloc>, Key, Value> { };
// This type caster is intended to be used for std::optional and std::experimental::optional
template<typename T> struct optional_caster {
using value_conv = make_caster<typename T::value_type>;
template <typename T_>
static handle cast(T_ &&src, return_value_policy policy, handle parent) {
if (!src)
return none().inc_ref();
return value_conv::cast(*std::forward<T_>(src), policy, parent);
}
bool load(handle src, bool convert) {
if (!src) {
return false;
} else if (src.is_none()) {
return true; // default-constructed value is already empty
}
value_conv inner_caster;
if (!inner_caster.load(src, convert))
return false;
value.emplace(cast_op<typename T::value_type &&>(std::move(inner_caster)));
return true;
}
PYBIND11_TYPE_CASTER(T, _("Optional[") + value_conv::name() + _("]"));
};
#if PYBIND11_HAS_OPTIONAL
template<typename T> struct type_caster<std::optional<T>>
: public optional_caster<std::optional<T>> {};
template<> struct type_caster<std::nullopt_t>
: public void_caster<std::nullopt_t> {};
#endif
#if PYBIND11_HAS_EXP_OPTIONAL
template<typename T> struct type_caster<std::experimental::optional<T>>
: public optional_caster<std::experimental::optional<T>> {};
template<> struct type_caster<std::experimental::nullopt_t>
: public void_caster<std::experimental::nullopt_t> {};
#endif
/// Visit a variant and cast any found type to Python
struct variant_caster_visitor {
return_value_policy policy;
handle parent;
template <typename T>
handle operator()(T &&src) const {
return make_caster<T>::cast(std::forward<T>(src), policy, parent);
}
};
/// Helper class which abstracts away variant's `visit` function. `std::variant` and similar
/// `namespace::variant` types which provide a `namespace::visit()` function are handled here
/// automatically using argument-dependent lookup. Users can provide specializations for other
/// variant-like classes, e.g. `boost::variant` and `boost::apply_visitor`.
template <template<typename...> class Variant>
struct visit_helper {
template <typename... Args>
static auto call(Args &&...args) -> decltype(visit(std::forward<Args>(args)...)) {
return visit(std::forward<Args>(args)...);
}
};
/// Generic variant caster
template <typename Variant> struct variant_caster;
template <template<typename...> class V, typename... Ts>
struct variant_caster<V<Ts...>> {
static_assert(sizeof...(Ts) > 0, "Variant must consist of at least one alternative.");
template <typename U, typename... Us>
bool load_alternative(handle src, bool convert, type_list<U, Us...>) {
auto caster = make_caster<U>();
if (caster.load(src, convert)) {
value = cast_op<U>(caster);
return true;
}
return load_alternative(src, convert, type_list<Us...>{});
}
bool load_alternative(handle, bool, type_list<>) { return false; }
bool load(handle src, bool convert) {
// Do a first pass without conversions to improve constructor resolution.
// E.g. `py::int_(1).cast<variant<double, int>>()` needs to fill the `int`
// slot of the variant. Without two-pass loading `double` would be filled
// because it appears first and a conversion is possible.
if (convert && load_alternative(src, false, type_list<Ts...>{}))
return true;
return load_alternative(src, convert, type_list<Ts...>{});
}
template <typename Variant>
static handle cast(Variant &&src, return_value_policy policy, handle parent) {
return visit_helper<V>::call(variant_caster_visitor{policy, parent},
std::forward<Variant>(src));
}
using Type = V<Ts...>;
PYBIND11_TYPE_CASTER(Type, _("Union[") + detail::concat(make_caster<Ts>::name()...) + _("]"));
};
#if PYBIND11_HAS_VARIANT
template <typename... Ts>
struct type_caster<std::variant<Ts...>> : variant_caster<std::variant<Ts...>> { };
#endif
NAMESPACE_END(detail)
inline std::ostream &operator<<(std::ostream &os, const handle &obj) {
os << (std::string) str(obj);
return os;
}
NAMESPACE_END(pybind11)
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
ppocr/postprocess/lanms/include/pybind11/stl_bind.h deleted 100644 → 0
View file @ 10f7e519
/*
pybind11/std_bind.h: Binding generators for STL data types
Copyright (c) 2016 Sergey Lyskov and Wenzel Jakob
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#pragma once
#include "common.h"
#include "operators.h"
#include <algorithm>
#include <sstream>
NAMESPACE_BEGIN(pybind11)
NAMESPACE_BEGIN(detail)
/* SFINAE helper class used by 'is_comparable */
template <typename T> struct container_traits {
template <typename T2> static std::true_type test_comparable(decltype(std::declval<const T2 &>() == std::declval<const T2 &>())*);
template <typename T2> static std::false_type test_comparable(...);
template <typename T2> static std::true_type test_value(typename T2::value_type *);
template <typename T2> static std::false_type test_value(...);
template <typename T2> static std::true_type test_pair(typename T2::first_type *, typename T2::second_type *);
template <typename T2> static std::false_type test_pair(...);
static constexpr const bool is_comparable = std::is_same<std::true_type, decltype(test_comparable<T>(nullptr))>::value;
static constexpr const bool is_pair = std::is_same<std::true_type, decltype(test_pair<T>(nullptr, nullptr))>::value;
static constexpr const bool is_vector = std::is_same<std::true_type, decltype(test_value<T>(nullptr))>::value;
static constexpr const bool is_element = !is_pair && !is_vector;
};
/* Default: is_comparable -> std::false_type */
template <typename T, typename SFINAE = void>
struct is_comparable : std::false_type { };
/* For non-map data structures, check whether operator== can be instantiated */
template <typename T>
struct is_comparable<
T, enable_if_t<container_traits<T>::is_element &&
container_traits<T>::is_comparable>>
: std::true_type { };
/* For a vector/map data structure, recursively check the value type (which is std::pair for maps) */
template <typename T>
struct is_comparable<T, enable_if_t<container_traits<T>::is_vector>> {
static constexpr const bool value =
is_comparable<typename T::value_type>::value;
};
/* For pairs, recursively check the two data types */
template <typename T>
struct is_comparable<T, enable_if_t<container_traits<T>::is_pair>> {
static constexpr const bool value =
is_comparable<typename T::first_type>::value &&
is_comparable<typename T::second_type>::value;
};
/* Fallback functions */
template <typename, typename, typename... Args> void vector_if_copy_constructible(const Args &...) { }
template <typename, typename, typename... Args> void vector_if_equal_operator(const Args &...) { }
template <typename, typename, typename... Args> void vector_if_insertion_operator(const Args &...) { }
template <typename, typename, typename... Args> void vector_modifiers(const Args &...) { }
template<typename Vector, typename Class_>
void vector_if_copy_constructible(enable_if_t<is_copy_constructible<Vector>::value, Class_> &cl) {
cl.def(init<const Vector &>(), "Copy constructor");
}
template<typename Vector, typename Class_>
void vector_if_equal_operator(enable_if_t<is_comparable<Vector>::value, Class_> &cl) {
using T = typename Vector::value_type;
cl.def(self == self);
cl.def(self != self);
cl.def("count",
[](const Vector &v, const T &x) {
return std::count(v.begin(), v.end(), x);
},
arg("x"),
"Return the number of times ``x`` appears in the list"
);
cl.def("remove", [](Vector &v, const T &x) {
auto p = std::find(v.begin(), v.end(), x);
if (p != v.end())
v.erase(p);
else
throw value_error();
},
arg("x"),
"Remove the first item from the list whose value is x. "
"It is an error if there is no such item."
);
cl.def("__contains__",
[](const Vector &v, const T &x) {
return std::find(v.begin(), v.end(), x) != v.end();
},
arg("x"),
"Return true the container contains ``x``"
);
}
// Vector modifiers -- requires a copyable vector_type:
// (Technically, some of these (pop and __delitem__) don't actually require copyability, but it seems
// silly to allow deletion but not insertion, so include them here too.)
template <typename Vector, typename Class_>
void vector_modifiers(enable_if_t<is_copy_constructible<typename Vector::value_type>::value, Class_> &cl) {
using T = typename Vector::value_type;
using SizeType = typename Vector::size_type;
using DiffType = typename Vector::difference_type;
cl.def("append",
[](Vector &v, const T &value) { v.push_back(value); },
arg("x"),
"Add an item to the end of the list");
cl.def("__init__", [](Vector &v, iterable it) {
new (&v) Vector();
try {
v.reserve(len(it));
for (handle h : it)
v.push_back(h.cast<T>());
} catch (...) {
v.~Vector();
throw;
}
});
cl.def("extend",
[](Vector &v, const Vector &src) {
v.insert(v.end(), src.begin(), src.end());
},
arg("L"),
"Extend the list by appending all the items in the given list"
);
cl.def("insert",
[](Vector &v, SizeType i, const T &x) {
if (i > v.size())
throw index_error();
v.insert(v.begin() + (DiffType) i, x);
},
arg("i") , arg("x"),
"Insert an item at a given position."
);
cl.def("pop",
[](Vector &v) {
if (v.empty())
throw index_error();
T t = v.back();
v.pop_back();
return t;
},
"Remove and return the last item"
);
cl.def("pop",
[](Vector &v, SizeType i) {
if (i >= v.size())
throw index_error();
T t = v[i];
v.erase(v.begin() + (DiffType) i);
return t;
},
arg("i"),
"Remove and return the item at index ``i``"
);
cl.def("__setitem__",
[](Vector &v, SizeType i, const T &t) {
if (i >= v.size())
throw index_error();
v[i] = t;
}
);
/// Slicing protocol
cl.def("__getitem__",
[](const Vector &v, slice slice) -> Vector * {
size_t start, stop, step, slicelength;
if (!slice.compute(v.size(), &start, &stop, &step, &slicelength))
throw error_already_set();
Vector *seq = new Vector();
seq->reserve((size_t) slicelength);
for (size_t i=0; i<slicelength; ++i) {
seq->push_back(v[start]);
start += step;
}
return seq;
},
arg("s"),
"Retrieve list elements using a slice object"
);
cl.def("__setitem__",
[](Vector &v, slice slice, const Vector &value) {
size_t start, stop, step, slicelength;
if (!slice.compute(v.size(), &start, &stop, &step, &slicelength))
throw error_already_set();
if (slicelength != value.size())
throw std::runtime_error("Left and right hand size of slice assignment have different sizes!");
for (size_t i=0; i<slicelength; ++i) {
v[start] = value[i];
start += step;
}
},
"Assign list elements using a slice object"
);
cl.def("__delitem__",
[](Vector &v, SizeType i) {
if (i >= v.size())
throw index_error();
v.erase(v.begin() + DiffType(i));
},
"Delete the list elements at index ``i``"
);
cl.def("__delitem__",
[](Vector &v, slice slice) {
size_t start, stop, step, slicelength;
if (!slice.compute(v.size(), &start, &stop, &step, &slicelength))
throw error_already_set();
if (step == 1 && false) {
v.erase(v.begin() + (DiffType) start, v.begin() + DiffType(start + slicelength));
} else {
for (size_t i = 0; i < slicelength; ++i) {
v.erase(v.begin() + DiffType(start));
start += step - 1;
}
}
},
"Delete list elements using a slice object"
);
}
// If the type has an operator[] that doesn't return a reference (most notably std::vector<bool>),
// we have to access by copying; otherwise we return by reference.
template <typename Vector> using vector_needs_copy = negation<
std::is_same<decltype(std::declval<Vector>()[typename Vector::size_type()]), typename Vector::value_type &>>;
// The usual case: access and iterate by reference
template <typename Vector, typename Class_>
void vector_accessor(enable_if_t<!vector_needs_copy<Vector>::value, Class_> &cl) {
using T = typename Vector::value_type;
using SizeType = typename Vector::size_type;
using ItType = typename Vector::iterator;
cl.def("__getitem__",
[](Vector &v, SizeType i) -> T & {
if (i >= v.size())
throw index_error();
return v[i];
},
return_value_policy::reference_internal // ref + keepalive
);
cl.def("__iter__",
[](Vector &v) {
return make_iterator<
return_value_policy::reference_internal, ItType, ItType, T&>(
v.begin(), v.end());
},
keep_alive<0, 1>() /* Essential: keep list alive while iterator exists */
);
}
// The case for special objects, like std::vector<bool>, that have to be returned-by-copy:
template <typename Vector, typename Class_>
void vector_accessor(enable_if_t<vector_needs_copy<Vector>::value, Class_> &cl) {
using T = typename Vector::value_type;
using SizeType = typename Vector::size_type;
using ItType = typename Vector::iterator;
cl.def("__getitem__",
[](const Vector &v, SizeType i) -> T {
if (i >= v.size())
throw index_error();
return v[i];
}
);
cl.def("__iter__",
[](Vector &v) {
return make_iterator<
return_value_policy::copy, ItType, ItType, T>(
v.begin(), v.end());
},
keep_alive<0, 1>() /* Essential: keep list alive while iterator exists */
);
}
template <typename Vector, typename Class_> auto vector_if_insertion_operator(Class_ &cl, std::string const &name)
-> decltype(std::declval<std::ostream&>() << std::declval<typename Vector::value_type>(), void()) {
using size_type = typename Vector::size_type;
cl.def("__repr__",
[name](Vector &v) {
std::ostringstream s;
s << name << '[';
for (size_type i=0; i < v.size(); ++i) {
s << v[i];
if (i != v.size() - 1)
s << ", ";
}
s << ']';
return s.str();
},
"Return the canonical string representation of this list."
);
}
// Provide the buffer interface for vectors if we have data() and we have a format for it
// GCC seems to have "void std::vector<bool>::data()" - doing SFINAE on the existence of data() is insufficient, we need to check it returns an appropriate pointer
template <typename Vector, typename = void>
struct vector_has_data_and_format : std::false_type {};
template <typename Vector>
struct vector_has_data_and_format<Vector, enable_if_t<std::is_same<decltype(format_descriptor<typename Vector::value_type>::format(), std::declval<Vector>().data()), typename Vector::value_type*>::value>> : std::true_type {};
// Add the buffer interface to a vector
template <typename Vector, typename Class_, typename... Args>
enable_if_t<detail::any_of<std::is_same<Args, buffer_protocol>...>::value>
vector_buffer(Class_& cl) {
using T = typename Vector::value_type;
static_assert(vector_has_data_and_format<Vector>::value, "There is not an appropriate format descriptor for this vector");
// numpy.h declares this for arbitrary types, but it may raise an exception and crash hard at runtime if PYBIND11_NUMPY_DTYPE hasn't been called, so check here
format_descriptor<T>::format();
cl.def_buffer([](Vector& v) -> buffer_info {
return buffer_info(v.data(), static_cast<ssize_t>(sizeof(T)), format_descriptor<T>::format(), 1, {v.size()}, {sizeof(T)});
});
cl.def("__init__", [](Vector& vec, buffer buf) {
auto info = buf.request();
if (info.ndim != 1 || info.strides[0] % static_cast<ssize_t>(sizeof(T)))
throw type_error("Only valid 1D buffers can be copied to a vector");
if (!detail::compare_buffer_info<T>::compare(info) || (ssize_t) sizeof(T) != info.itemsize)
throw type_error("Format mismatch (Python: " + info.format + " C++: " + format_descriptor<T>::format() + ")");
new (&vec) Vector();
vec.reserve((size_t) info.shape[0]);
T *p = static_cast<T*>(info.ptr);
ssize_t step = info.strides[0] / static_cast<ssize_t>(sizeof(T));
T *end = p + info.shape[0] * step;
for (; p != end; p += step)
vec.push_back(*p);
});
return;
}
template <typename Vector, typename Class_, typename... Args>
enable_if_t<!detail::any_of<std::is_same<Args, buffer_protocol>...>::value> vector_buffer(Class_&) {}
NAMESPACE_END(detail)
//
// std::vector
//
template <typename Vector, typename holder_type = std::unique_ptr<Vector>, typename... Args>
class_<Vector, holder_type> bind_vector(module &m, std::string const &name, Args&&... args) {
using Class_ = class_<Vector, holder_type>;
Class_ cl(m, name.c_str(), std::forward<Args>(args)...);
// Declare the buffer interface if a buffer_protocol() is passed in
detail::vector_buffer<Vector, Class_, Args...>(cl);
cl.def(init<>());
// Register copy constructor (if possible)
detail::vector_if_copy_constructible<Vector, Class_>(cl);
// Register comparison-related operators and functions (if possible)
detail::vector_if_equal_operator<Vector, Class_>(cl);
// Register stream insertion operator (if possible)
detail::vector_if_insertion_operator<Vector, Class_>(cl, name);
// Modifiers require copyable vector value type
detail::vector_modifiers<Vector, Class_>(cl);
// Accessor and iterator; return by value if copyable, otherwise we return by ref + keep-alive
detail::vector_accessor<Vector, Class_>(cl);
cl.def("__bool__",
[](const Vector &v) -> bool {
return !v.empty();
},
"Check whether the list is nonempty"
);
cl.def("__len__", &Vector::size);
#if 0
// C++ style functions deprecated, leaving it here as an example
cl.def(init<size_type>());
cl.def("resize",
(void (Vector::*) (size_type count)) & Vector::resize,
"changes the number of elements stored");
cl.def("erase",
[](Vector &v, SizeType i) {
if (i >= v.size())
throw index_error();
v.erase(v.begin() + i);
}, "erases element at index ``i``");
cl.def("empty", &Vector::empty, "checks whether the container is empty");
cl.def("size", &Vector::size, "returns the number of elements");
cl.def("push_back", (void (Vector::*)(const T&)) &Vector::push_back, "adds an element to the end");
cl.def("pop_back", &Vector::pop_back, "removes the last element");
cl.def("max_size", &Vector::max_size, "returns the maximum possible number of elements");
cl.def("reserve", &Vector::reserve, "reserves storage");
cl.def("capacity", &Vector::capacity, "returns the number of elements that can be held in currently allocated storage");
cl.def("shrink_to_fit", &Vector::shrink_to_fit, "reduces memory usage by freeing unused memory");
cl.def("clear", &Vector::clear, "clears the contents");
cl.def("swap", &Vector::swap, "swaps the contents");
cl.def("front", [](Vector &v) {
if (v.size()) return v.front();
else throw index_error();
}, "access the first element");
cl.def("back", [](Vector &v) {
if (v.size()) return v.back();
else throw index_error();
}, "access the last element ");
#endif
return cl;
}
//
// std::map, std::unordered_map
//
NAMESPACE_BEGIN(detail)
/* Fallback functions */
template <typename, typename, typename... Args> void map_if_insertion_operator(const Args &...) { }
template <typename, typename, typename... Args> void map_assignment(const Args &...) { }
// Map assignment when copy-assignable: just copy the value
template <typename Map, typename Class_>
void map_assignment(enable_if_t<std::is_copy_assignable<typename Map::mapped_type>::value, Class_> &cl) {
using KeyType = typename Map::key_type;
using MappedType = typename Map::mapped_type;
cl.def("__setitem__",
[](Map &m, const KeyType &k, const MappedType &v) {
auto it = m.find(k);
if (it != m.end()) it->second = v;
else m.emplace(k, v);
}
);
}
// Not copy-assignable, but still copy-constructible: we can update the value by erasing and reinserting
template<typename Map, typename Class_>
void map_assignment(enable_if_t<
!std::is_copy_assignable<typename Map::mapped_type>::value &&
is_copy_constructible<typename Map::mapped_type>::value,
Class_> &cl) {
using KeyType = typename Map::key_type;
using MappedType = typename Map::mapped_type;
cl.def("__setitem__",
[](Map &m, const KeyType &k, const MappedType &v) {
// We can't use m[k] = v; because value type might not be default constructable
auto r = m.emplace(k, v);
if (!r.second) {
// value type is not copy assignable so the only way to insert it is to erase it first...
m.erase(r.first);
m.emplace(k, v);
}
}
);
}
template <typename Map, typename Class_> auto map_if_insertion_operator(Class_ &cl, std::string const &name)
-> decltype(std::declval<std::ostream&>() << std::declval<typename Map::key_type>() << std::declval<typename Map::mapped_type>(), void()) {
cl.def("__repr__",
[name](Map &m) {
std::ostringstream s;
s << name << '{';
bool f = false;
for (auto const &kv : m) {
if (f)
s << ", ";
s << kv.first << ": " << kv.second;
f = true;
}
s << '}';
return s.str();
},
"Return the canonical string representation of this map."
);
}
NAMESPACE_END(detail)
template <typename Map, typename holder_type = std::unique_ptr<Map>, typename... Args>
class_<Map, holder_type> bind_map(module &m, const std::string &name, Args&&... args) {
using KeyType = typename Map::key_type;
using MappedType = typename Map::mapped_type;
using Class_ = class_<Map, holder_type>;
Class_ cl(m, name.c_str(), std::forward<Args>(args)...);
cl.def(init<>());
// Register stream insertion operator (if possible)
detail::map_if_insertion_operator<Map, Class_>(cl, name);
cl.def("__bool__",
[](const Map &m) -> bool { return !m.empty(); },
"Check whether the map is nonempty"
);
cl.def("__iter__",
[](Map &m) { return make_key_iterator(m.begin(), m.end()); },
keep_alive<0, 1>() /* Essential: keep list alive while iterator exists */
);
cl.def("items",
[](Map &m) { return make_iterator(m.begin(), m.end()); },
keep_alive<0, 1>() /* Essential: keep list alive while iterator exists */
);
cl.def("__getitem__",
[](Map &m, const KeyType &k) -> MappedType & {
auto it = m.find(k);
if (it == m.end())
throw key_error();
return it->second;
},
return_value_policy::reference_internal // ref + keepalive
);
// Assignment provided only if the type is copyable
detail::map_assignment<Map, Class_>(cl);
cl.def("__delitem__",
[](Map &m, const KeyType &k) {
auto it = m.find(k);
if (it == m.end())
throw key_error();
return m.erase(it);
}
);
cl.def("__len__", &Map::size);
return cl;
}
NAMESPACE_END(pybind11)
ppocr/postprocess/lanms/include/pybind11/typeid.h deleted 100644 → 0
View file @ 10f7e519
/*
pybind11/typeid.h: Compiler-independent access to type identifiers
Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#pragma once
#include <cstdio>
#include <cstdlib>
#if defined(__GNUG__)
#include <cxxabi.h>
#endif
NAMESPACE_BEGIN(pybind11)
NAMESPACE_BEGIN(detail)
/// Erase all occurrences of a substring
inline void erase_all(std::string &string, const std::string &search) {
for (size_t pos = 0;;) {
pos = string.find(search, pos);
if (pos == std::string::npos) break;
string.erase(pos, search.length());
}
}
PYBIND11_NOINLINE inline void clean_type_id(std::string &name) {
#if defined(__GNUG__)
int status = 0;
std::unique_ptr<char, void (*)(void *)> res {
abi::__cxa_demangle(name.c_str(), nullptr, nullptr, &status), std::free };
if (status == 0)
name = res.get();
#else
detail::erase_all(name, "class ");
detail::erase_all(name, "struct ");
detail::erase_all(name, "enum ");
#endif
detail::erase_all(name, "pybind11::");
}
NAMESPACE_END(detail)
/// Return a string representation of a C++ type
template <typename T> static std::string type_id() {
std::string name(typeid(T).name());
detail::clean_type_id(name);
return name;
}
NAMESPACE_END(pybind11)
ppocr/postprocess/lanms/lanms.h deleted 100644 → 0
View file @ 10f7e519
#pragma once
#include "clipper/clipper.hpp"
// locality-aware NMS
namespace lanms {
namespace cl = ClipperLib;
struct Polygon {
cl::Path poly;
float score;
};
float paths_area(const ClipperLib::Paths &ps) {
float area = 0;
for (auto &&p: ps)
area += cl::Area(p);
return area;
}
float poly_iou(const Polygon &a, const Polygon &b) {
cl::Clipper clpr;
clpr.AddPath(a.poly, cl::ptSubject, true);
clpr.AddPath(b.poly, cl::ptClip, true);
cl::Paths inter, uni;
clpr.Execute(cl::ctIntersection, inter, cl::pftEvenOdd);
clpr.Execute(cl::ctUnion, uni, cl::pftEvenOdd);
auto inter_area = paths_area(inter),
uni_area = paths_area(uni);
return std::abs(inter_area) / std::max(std::abs(uni_area), 1.0f);
}
bool should_merge(const Polygon &a, const Polygon &b, float iou_threshold) {
return poly_iou(a, b) > iou_threshold;
}
/**
* Incrementally merge polygons
*/
class PolyMerger {
public:
PolyMerger(): score(0), nr_polys(0) {
memset(data, 0, sizeof(data));
}
/**
* Add a new polygon to be merged.
*/
void add(const Polygon &p_given) {
Polygon p;
if (nr_polys > 0) {
// vertices of two polygons to merge may not in the same order;
// we match their vertices by choosing the ordering that
// minimizes the total squared distance.
// see function normalize_poly for details.
p = normalize_poly(get(), p_given);
} else {
p = p_given;
}
assert(p.poly.size() == 4);
auto &poly = p.poly;
auto s = p.score;
data[0] += poly[0].X * s;
data[1] += poly[0].Y * s;
data[2] += poly[1].X * s;
data[3] += poly[1].Y * s;
data[4] += poly[2].X * s;
data[5] += poly[2].Y * s;
data[6] += poly[3].X * s;
data[7] += poly[3].Y * s;
score += p.score;
nr_polys += 1;
}
inline std::int64_t sqr(std::int64_t x) { return x * x; }
Polygon normalize_poly(
const Polygon &ref,
const Polygon &p) {
std::int64_t min_d = std::numeric_limits<std::int64_t>::max();
size_t best_start = 0, best_order = 0;
for (size_t start = 0; start < 4; start ++) {
size_t j = start;
std::int64_t d = (
sqr(ref.poly[(j + 0) % 4].X - p.poly[(j + 0) % 4].X)
+ sqr(ref.poly[(j + 0) % 4].Y - p.poly[(j + 0) % 4].Y)
+ sqr(ref.poly[(j + 1) % 4].X - p.poly[(j + 1) % 4].X)
+ sqr(ref.poly[(j + 1) % 4].Y - p.poly[(j + 1) % 4].Y)
+ sqr(ref.poly[(j + 2) % 4].X - p.poly[(j + 2) % 4].X)
+ sqr(ref.poly[(j + 2) % 4].Y - p.poly[(j + 2) % 4].Y)
+ sqr(ref.poly[(j + 3) % 4].X - p.poly[(j + 3) % 4].X)
+ sqr(ref.poly[(j + 3) % 4].Y - p.poly[(j + 3) % 4].Y)
);
if (d < min_d) {
min_d = d;
best_start = start;
best_order = 0;
}
d = (
sqr(ref.poly[(j + 0) % 4].X - p.poly[(j + 3) % 4].X)
+ sqr(ref.poly[(j + 0) % 4].Y - p.poly[(j + 3) % 4].Y)
+ sqr(ref.poly[(j + 1) % 4].X - p.poly[(j + 2) % 4].X)
+ sqr(ref.poly[(j + 1) % 4].Y - p.poly[(j + 2) % 4].Y)
+ sqr(ref.poly[(j + 2) % 4].X - p.poly[(j + 1) % 4].X)
+ sqr(ref.poly[(j + 2) % 4].Y - p.poly[(j + 1) % 4].Y)
+ sqr(ref.poly[(j + 3) % 4].X - p.poly[(j + 0) % 4].X)
+ sqr(ref.poly[(j + 3) % 4].Y - p.poly[(j + 0) % 4].Y)
);
if (d < min_d) {
min_d = d;
best_start = start;
best_order = 1;
}
}
Polygon r;
r.poly.resize(4);
auto j = best_start;
if (best_order == 0) {
for (size_t i = 0; i < 4; i ++)
r.poly[i] = p.poly[(j + i) % 4];
} else {
for (size_t i = 0; i < 4; i ++)
r.poly[i] = p.poly[(j + 4 - i - 1) % 4];
}
r.score = p.score;
return r;
}
Polygon get() const {
Polygon p;
auto &poly = p.poly;
poly.resize(4);
auto score_inv = 1.0f / std::max(1e-8f, score);
poly[0].X = data[0] * score_inv;
poly[0].Y = data[1] * score_inv;
poly[1].X = data[2] * score_inv;
poly[1].Y = data[3] * score_inv;
poly[2].X = data[4] * score_inv;
poly[2].Y = data[5] * score_inv;
poly[3].X = data[6] * score_inv;
poly[3].Y = data[7] * score_inv;
assert(score > 0);
p.score = score;
return p;
}
private:
std::int64_t data[8];
float score;
std::int32_t nr_polys;
};
/**
* The standard NMS algorithm.
*/
std::vector<Polygon> standard_nms(std::vector<Polygon> &polys, float iou_threshold) {
size_t n = polys.size();
if (n == 0)
return {};
std::vector<size_t> indices(n);
std::iota(std::begin(indices), std::end(indices), 0);
std::sort(std::begin(indices), std::end(indices), [&](size_t i, size_t j) { return polys[i].score > polys[j].score; });
std::vector<size_t> keep;
while (indices.size()) {
size_t p = 0, cur = indices[0];
keep.emplace_back(cur);
for (size_t i = 1; i < indices.size(); i ++) {
if (!should_merge(polys[cur], polys[indices[i]], iou_threshold)) {
indices[p ++] = indices[i];
}
}
indices.resize(p);
}
std::vector<Polygon> ret;
for (auto &&i: keep) {
ret.emplace_back(polys[i]);
}
return ret;
}
std::vector<Polygon>
merge_quadrangle_n9(const float *data, size_t n, float iou_threshold) {
using cInt = cl::cInt;
// first pass
std::vector<Polygon> polys;
for (size_t i = 0; i < n; i ++) {
auto p = data + i * 9;
Polygon poly{
{
{cInt(p[0]), cInt(p[1])},
{cInt(p[2]), cInt(p[3])},
{cInt(p[4]), cInt(p[5])},
{cInt(p[6]), cInt(p[7])},
},
p[8],
};
if (polys.size()) {
// merge with the last one
auto &bpoly = polys.back();
if (should_merge(poly, bpoly, iou_threshold)) {
PolyMerger merger;
merger.add(bpoly);
merger.add(poly);
bpoly = merger.get();
} else {
polys.emplace_back(poly);
}
} else {
polys.emplace_back(poly);
}
}
return standard_nms(polys, iou_threshold);
}
}
ppocr/postprocess/locality_aware_nms.py deleted 100644 → 0
View file @ 10f7e519
"""
Locality aware nms.
"""
import numpy as np
from shapely.geometry import Polygon
def intersection(g, p):
"""
Intersection.
"""
g = Polygon(g[:8].reshape((4, 2)))
p = Polygon(p[:8].reshape((4, 2)))
g = g.buffer(0)
p = p.buffer(0)
if not g.is_valid or not p.is_valid:
return 0
inter = Polygon(g).intersection(Polygon(p)).area
union = g.area + p.area - inter
if union == 0:
return 0
else:
return inter / union
def intersection_iog(g, p):
"""
Intersection_iog.
"""
g = Polygon(g[:8].reshape((4, 2)))
p = Polygon(p[:8].reshape((4, 2)))
if not g.is_valid or not p.is_valid:
return 0
inter = Polygon(g).intersection(Polygon(p)).area
#union = g.area + p.area - inter
union = p.area
if union == 0:
print("p_area is very small")
return 0
else:
return inter / union
def weighted_merge(g, p):
"""
Weighted merge.
"""
g[:8] = (g[8] * g[:8] + p[8] * p[:8]) / (g[8] + p[8])
g[8] = (g[8] + p[8])
return g
def standard_nms(S, thres):
"""
Standard nms.
"""
order = np.argsort(S[:, 8])[::-1]
keep = []
while order.size > 0:
i = order[0]
keep.append(i)
ovr = np.array([intersection(S[i], S[t]) for t in order[1:]])
inds = np.where(ovr <= thres)[0]
order = order[inds + 1]
return S[keep]
def standard_nms_inds(S, thres):
"""
Standard nms, retun inds.
"""
order = np.argsort(S[:, 8])[::-1]
keep = []
while order.size > 0:
i = order[0]
keep.append(i)
ovr = np.array([intersection(S[i], S[t]) for t in order[1:]])
inds = np.where(ovr <= thres)[0]
order = order[inds + 1]
return keep
def nms(S, thres):
"""
nms.
"""
order = np.argsort(S[:, 8])[::-1]
keep = []
while order.size > 0:
i = order[0]
keep.append(i)
ovr = np.array([intersection(S[i], S[t]) for t in order[1:]])
inds = np.where(ovr <= thres)[0]
order = order[inds + 1]
return keep
def soft_nms(boxes_in, Nt_thres=0.3, threshold=0.8, sigma=0.5, method=2):
"""
soft_nms
:para boxes_in, N x 9 (coords + score)
:para threshould, eliminate cases min score(0.001)
:para Nt_thres, iou_threshi
:para sigma, gaussian weght
:method, linear or gaussian
"""
boxes = boxes_in.copy()
N = boxes.shape[0]
if N is None or N < 1:
return np.array([])
pos, maxpos = 0, 0
weight = 0.0
inds = np.arange(N)
tbox, sbox = boxes[0].copy(), boxes[0].copy()
for i in range(N):
maxscore = boxes[i, 8]
maxpos = i
tbox = boxes[i].copy()
ti = inds[i]
pos = i + 1
#get max box
while pos < N:
if maxscore < boxes[pos, 8]:
maxscore = boxes[pos, 8]
maxpos = pos
pos = pos + 1
#add max box as a detection
boxes[i, :] = boxes[maxpos, :]
inds[i] = inds[maxpos]
#swap
boxes[maxpos, :] = tbox
inds[maxpos] = ti
tbox = boxes[i].copy()
pos = i + 1
#NMS iteration
while pos < N:
sbox = boxes[pos].copy()
ts_iou_val = intersection(tbox, sbox)
if ts_iou_val > 0:
if method == 1:
if ts_iou_val > Nt_thres:
weight = 1 - ts_iou_val
else:
weight = 1
elif method == 2:
weight = np.exp(-1.0 * ts_iou_val**2 / sigma)
else:
if ts_iou_val > Nt_thres:
weight = 0
else:
weight = 1
boxes[pos, 8] = weight * boxes[pos, 8]
#if box score falls below thresold, discard the box by
#swaping last box update N
if boxes[pos, 8] < threshold:
boxes[pos, :] = boxes[N - 1, :]
inds[pos] = inds[N - 1]
N = N - 1
pos = pos - 1
pos = pos + 1
return boxes[:N]
def nms_locality(polys, thres=0.3):
"""
locality aware nms of EAST
:param polys: a N*9 numpy array. first 8 coordinates, then prob
:return: boxes after nms
"""
S = []
p = None
for g in polys:
if p is not None and intersection(g, p) > thres:
p = weighted_merge(g, p)
else:
if p is not None:
S.append(p)
p = g
if p is not None:
S.append(p)
if len(S) == 0:
return np.array([])
return standard_nms(np.array(S), thres)
if __name__ == '__main__':
# 343,350,448,135,474,143,369,359
print(
Polygon(np.array([[343, 350], [448, 135], [474, 143], [369, 359]]))
.area)
ppocr/postprocess/rec_postprocess.py 0 → 100644
View file @ aad3093a
# copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import numpy as np
import paddle
from paddle.nn import functional as F
class BaseRecLabelDecode(object):
""" Convert between text-label and text-index """
def __init__(self,
character_dict_path=None,
character_type='ch',
use_space_char=False):
support_character_type = ['ch', 'en', 'en_sensitive']
assert character_type in support_character_type, "Only {} are supported now but get {}".format(
support_character_type, self.character_str)
if character_type == "en":
self.character_str = "0123456789abcdefghijklmnopqrstuvwxyz"
dict_character = list(self.character_str)
elif character_type == "ch":
self.character_str = ""
assert character_dict_path is not None, "character_dict_path should not be None when character_type is ch"
with open(character_dict_path, "rb") as fin:
lines = fin.readlines()
for line in lines:
line = line.decode('utf-8').strip("\n").strip("\r\n")
self.character_str += line
if use_space_char:
self.character_str += " "
dict_character = list(self.character_str)
elif character_type == "en_sensitive":
# same with ASTER setting (use 94 char).
import string
self.character_str = string.printable[:-6]
dict_character = list(self.character_str)
else:
raise NotImplementedError
self.character_type = character_type
dict_character = self.add_special_char(dict_character)
self.dict = {}
for i, char in enumerate(dict_character):
self.dict[char] = i
self.character = dict_character
def add_special_char(self, dict_character):
return dict_character
def decode(self, text_index, text_prob=None, is_remove_duplicate=True):
""" convert text-index into text-label. """
result_list = []
ignored_tokens = self.get_ignored_tokens()
batch_size = len(text_index)
for batch_idx in range(batch_size):
char_list = []
conf_list = []
for idx in range(len(text_index[batch_idx])):
if text_index[batch_idx][idx] in ignored_tokens:
continue
if is_remove_duplicate:
if idx > 0 and text_index[batch_idx][idx - 1] == text_index[
batch_idx][idx]:
continue
char_list.append(self.character[int(text_index[batch_idx][
idx])])
if text_prob is not None:
conf_list.append(text_prob[batch_idx][idx])
else:
conf_list.append(1)
text = ''.join(char_list)
result_list.append((text, conf_list))
return result_list
def get_ignored_tokens(self):
return [0] # for ctc blank
class CTCLabelDecode(BaseRecLabelDecode):
""" Convert between text-label and text-index """
def __init__(self,
character_dict_path=None,
character_type='ch',
use_space_char=False,
**kwargs):
super(CTCLabelDecode, self).__init__(character_dict_path,
character_type, use_space_char)
def __call__(self, preds, label=None, *args, **kwargs):
# out = self.decode_preds(preds)
preds = F.softmax(preds, axis=2).numpy()
preds_idx = preds.argmax(axis=2)
preds_prob = preds.max(axis=2)
text = self.decode(preds_idx, preds_prob)
if label is None:
return text
label = self.decode(label)
return text, label
def add_special_char(self, dict_character):
dict_character = ['blank'] + dict_character
return dict_character
def decode_preds(self, preds):
probs = F.softmax(preds, axis=2).numpy()
probs_ind = np.argmax(probs, axis=2)
B, N, _ = preds.shape
l = np.ones(B).astype(np.int64) * N
length = paddle.to_variable(l)
out = paddle.fluid.layers.ctc_greedy_decoder(preds, 0, length)
batch_res = [
x[:idx[0]] for x, idx in zip(out[0].numpy(), out[1].numpy())
]
result_list = []
for sample_idx, ind, prob in zip(batch_res, probs_ind, probs):
char_list = [self.character[idx] for idx in sample_idx]
valid_ind = np.where(ind != 0)[0]
if len(valid_ind) == 0:
continue
conf_list = prob[valid_ind, ind[valid_ind]]
result_list.append((''.join(char_list), conf_list))
return result_list
class AttnLabelDecode(BaseRecLabelDecode):
""" Convert between text-label and text-index """
def __init__(self,
character_dict_path=None,
character_type='ch',
use_space_char=False,
**kwargs):
super(AttnLabelDecode, self).__init__(character_dict_path,
character_type, use_space_char)
self.beg_str = "sos"
self.end_str = "eos"
def add_special_char(self, dict_character):
dict_character = [self.beg_str, self.end_str] + dict_character
return dict_character
def __call__(self, text):
text = self.decode(text)
return text
def get_ignored_tokens(self):
beg_idx = self.get_beg_end_flag_idx("beg")
end_idx = self.get_beg_end_flag_idx("end")
return [beg_idx, end_idx]
def get_beg_end_flag_idx(self, beg_or_end):
if beg_or_end == "beg":
idx = np.array(self.dict[self.beg_str])
elif beg_or_end == "end":
idx = np.array(self.dict[self.end_str])
else:
assert False, "unsupport type %s in get_beg_end_flag_idx" \
% beg_or_end
return idx
ppocr/postprocess/sast_postprocess.py deleted 100644 → 0
View file @ 10f7e519
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import sys
__dir__ = os.path.dirname(__file__)
sys.path.append(__dir__)
sys.path.append(os.path.join(__dir__, '..'))
import numpy as np
from .locality_aware_nms import nms_locality
# import lanms
import cv2
import time
class SASTPostProcess(object):
"""
The post process for SAST.
"""
def __init__(self, params):
self.score_thresh = params.get('score_thresh', 0.5)
self.nms_thresh = params.get('nms_thresh', 0.2)
self.sample_pts_num = params.get('sample_pts_num', 2)
self.shrink_ratio_of_width = params.get('shrink_ratio_of_width', 0.3)
self.expand_scale = params.get('expand_scale', 1.0)
self.tcl_map_thresh = 0.5
# c++ la-nms is faster, but only support python 3.5
self.is_python35 = False
if sys.version_info.major == 3 and sys.version_info.minor == 5:
self.is_python35 = True
def point_pair2poly(self, point_pair_list):
"""
Transfer vertical point_pairs into poly point in clockwise.
"""
# constract poly
point_num = len(point_pair_list) * 2
point_list = [0] * point_num
for idx, point_pair in enumerate(point_pair_list):
point_list[idx] = point_pair[0]
point_list[point_num - 1 - idx] = point_pair[1]
return np.array(point_list).reshape(-1, 2)
def shrink_quad_along_width(self, quad, begin_width_ratio=0., end_width_ratio=1.):
"""
Generate shrink_quad_along_width.
"""
ratio_pair = np.array([[begin_width_ratio], [end_width_ratio]], dtype=np.float32)
p0_1 = quad[0] + (quad[1] - quad[0]) * ratio_pair
p3_2 = quad[3] + (quad[2] - quad[3]) * ratio_pair
return np.array([p0_1[0], p0_1[1], p3_2[1], p3_2[0]])
def expand_poly_along_width(self, poly, shrink_ratio_of_width=0.3):
"""
expand poly along width.
"""
point_num = poly.shape[0]
left_quad = np.array([poly[0], poly[1], poly[-2], poly[-1]], dtype=np.float32)
left_ratio = -shrink_ratio_of_width * np.linalg.norm(left_quad[0] - left_quad[3]) / \
(np.linalg.norm(left_quad[0] - left_quad[1]) + 1e-6)
left_quad_expand = self.shrink_quad_along_width(left_quad, left_ratio, 1.0)
right_quad = np.array([poly[point_num // 2 - 2], poly[point_num // 2 - 1],
poly[point_num // 2], poly[point_num // 2 + 1]], dtype=np.float32)
right_ratio = 1.0 + \
shrink_ratio_of_width * np.linalg.norm(right_quad[0] - right_quad[3]) / \
(np.linalg.norm(right_quad[0] - right_quad[1]) + 1e-6)
right_quad_expand = self.shrink_quad_along_width(right_quad, 0.0, right_ratio)
poly[0] = left_quad_expand[0]
poly[-1] = left_quad_expand[-1]
poly[point_num // 2 - 1] = right_quad_expand[1]
poly[point_num // 2] = right_quad_expand[2]
return poly
def restore_quad(self, tcl_map, tcl_map_thresh, tvo_map):
"""Restore quad."""
xy_text = np.argwhere(tcl_map[:, :, 0] > tcl_map_thresh)
xy_text = xy_text[:, ::-1] # (n, 2)
# Sort the text boxes via the y axis
xy_text = xy_text[np.argsort(xy_text[:, 1])]
scores = tcl_map[xy_text[:, 1], xy_text[:, 0], 0]
scores = scores[:, np.newaxis]
# Restore
point_num = int(tvo_map.shape[-1] / 2)
assert point_num == 4
tvo_map = tvo_map[xy_text[:, 1], xy_text[:, 0], :]
xy_text_tile = np.tile(xy_text, (1, point_num)) # (n, point_num * 2)
quads = xy_text_tile - tvo_map
return scores, quads, xy_text
def quad_area(self, quad):
"""
compute area of a quad.
"""
edge = [
(quad[1][0] - quad[0][0]) * (quad[1][1] + quad[0][1]),
(quad[2][0] - quad[1][0]) * (quad[2][1] + quad[1][1]),
(quad[3][0] - quad[2][0]) * (quad[3][1] + quad[2][1]),
(quad[0][0] - quad[3][0]) * (quad[0][1] + quad[3][1])
]
return np.sum(edge) / 2.
def nms(self, dets):
if self.is_python35:
import lanms
dets = lanms.merge_quadrangle_n9(dets, self.nms_thresh)
else:
dets = nms_locality(dets, self.nms_thresh)
return dets
def cluster_by_quads_tco(self, tcl_map, tcl_map_thresh, quads, tco_map):
"""
Cluster pixels in tcl_map based on quads.
"""
instance_count = quads.shape[0] + 1 # contain background
instance_label_map = np.zeros(tcl_map.shape[:2], dtype=np.int32)
if instance_count == 1:
return instance_count, instance_label_map
# predict text center
xy_text = np.argwhere(tcl_map[:, :, 0] > tcl_map_thresh)
n = xy_text.shape[0]
xy_text = xy_text[:, ::-1] # (n, 2)
tco = tco_map[xy_text[:, 1], xy_text[:, 0], :] # (n, 2)
pred_tc = xy_text - tco
# get gt text center
m = quads.shape[0]
gt_tc = np.mean(quads, axis=1) # (m, 2)
pred_tc_tile = np.tile(pred_tc[:, np.newaxis, :], (1, m, 1)) # (n, m, 2)
gt_tc_tile = np.tile(gt_tc[np.newaxis, :, :], (n, 1, 1)) # (n, m, 2)
dist_mat = np.linalg.norm(pred_tc_tile - gt_tc_tile, axis=2) # (n, m)
xy_text_assign = np.argmin(dist_mat, axis=1) + 1 # (n,)
instance_label_map[xy_text[:, 1], xy_text[:, 0]] = xy_text_assign
return instance_count, instance_label_map
def estimate_sample_pts_num(self, quad, xy_text):
"""
Estimate sample points number.
"""
eh = (np.linalg.norm(quad[0] - quad[3]) + np.linalg.norm(quad[1] - quad[2])) / 2.0
ew = (np.linalg.norm(quad[0] - quad[1]) + np.linalg.norm(quad[2] - quad[3])) / 2.0
dense_sample_pts_num = max(2, int(ew))
dense_xy_center_line = xy_text[np.linspace(0, xy_text.shape[0] - 1, dense_sample_pts_num,
endpoint=True, dtype=np.float32).astype(np.int32)]
dense_xy_center_line_diff = dense_xy_center_line[1:] - dense_xy_center_line[:-1]
estimate_arc_len = np.sum(np.linalg.norm(dense_xy_center_line_diff, axis=1))
sample_pts_num = max(2, int(estimate_arc_len / eh))
return sample_pts_num
def detect_sast(self, tcl_map, tvo_map, tbo_map, tco_map, ratio_w, ratio_h, src_w, src_h,
shrink_ratio_of_width=0.3, tcl_map_thresh=0.5, offset_expand=1.0, out_strid=4.0):
"""
first resize the tcl_map, tvo_map and tbo_map to the input_size, then restore the polys
"""
# restore quad
scores, quads, xy_text = self.restore_quad(tcl_map, tcl_map_thresh, tvo_map)
dets = np.hstack((quads, scores)).astype(np.float32, copy=False)
dets = self.nms(dets)
if dets.shape[0] == 0:
return []
quads = dets[:, :-1].reshape(-1, 4, 2)
# Compute quad area
quad_areas = []
for quad in quads:
quad_areas.append(-self.quad_area(quad))
# instance segmentation
# instance_count, instance_label_map = cv2.connectedComponents(tcl_map.astype(np.uint8), connectivity=8)
instance_count, instance_label_map = self.cluster_by_quads_tco(tcl_map, tcl_map_thresh, quads, tco_map)
# restore single poly with tcl instance.
poly_list = []
for instance_idx in range(1, instance_count):
xy_text = np.argwhere(instance_label_map == instance_idx)[:, ::-1]
quad = quads[instance_idx - 1]
q_area = quad_areas[instance_idx - 1]
if q_area < 5:
continue
#
len1 = float(np.linalg.norm(quad[0] -quad[1]))
len2 = float(np.linalg.norm(quad[1] -quad[2]))
min_len = min(len1, len2)
if min_len < 3:
continue
# filter small CC
if xy_text.shape[0] <= 0:
continue
# filter low confidence instance
xy_text_scores = tcl_map[xy_text[:, 1], xy_text[:, 0], 0]
if np.sum(xy_text_scores) / quad_areas[instance_idx - 1] < 0.1:
# if np.sum(xy_text_scores) / quad_areas[instance_idx - 1] < 0.05:
continue
# sort xy_text
left_center_pt = np.array([[(quad[0, 0] + quad[-1, 0]) / 2.0,
(quad[0, 1] + quad[-1, 1]) / 2.0]]) # (1, 2)
right_center_pt = np.array([[(quad[1, 0] + quad[2, 0]) / 2.0,
(quad[1, 1] + quad[2, 1]) / 2.0]]) # (1, 2)
proj_unit_vec = (right_center_pt - left_center_pt) / \
(np.linalg.norm(right_center_pt - left_center_pt) + 1e-6)
proj_value = np.sum(xy_text * proj_unit_vec, axis=1)
xy_text = xy_text[np.argsort(proj_value)]
# Sample pts in tcl map
if self.sample_pts_num == 0:
sample_pts_num = self.estimate_sample_pts_num(quad, xy_text)
else:
sample_pts_num = self.sample_pts_num
xy_center_line = xy_text[np.linspace(0, xy_text.shape[0] - 1, sample_pts_num,
endpoint=True, dtype=np.float32).astype(np.int32)]
point_pair_list = []
for x, y in xy_center_line:
# get corresponding offset
offset = tbo_map[y, x, :].reshape(2, 2)
if offset_expand != 1.0:
offset_length = np.linalg.norm(offset, axis=1, keepdims=True)
expand_length = np.clip(offset_length * (offset_expand - 1), a_min=0.5, a_max=3.0)
offset_detal = offset / offset_length * expand_length
offset = offset + offset_detal
# original point
ori_yx = np.array([y, x], dtype=np.float32)
point_pair = (ori_yx + offset)[:, ::-1]* out_strid / np.array([ratio_w, ratio_h]).reshape(-1, 2)
point_pair_list.append(point_pair)
# ndarry: (x, 2), expand poly along width
detected_poly = self.point_pair2poly(point_pair_list)
detected_poly = self.expand_poly_along_width(detected_poly, shrink_ratio_of_width)
detected_poly[:, 0] = np.clip(detected_poly[:, 0], a_min=0, a_max=src_w)
detected_poly[:, 1] = np.clip(detected_poly[:, 1], a_min=0, a_max=src_h)
poly_list.append(detected_poly)
return poly_list
def __call__(self, outs_dict, ratio_list):
score_list = outs_dict['f_score']
border_list = outs_dict['f_border']
tvo_list = outs_dict['f_tvo']
tco_list = outs_dict['f_tco']
img_num = len(ratio_list)
poly_lists = []
for ino in range(img_num):
p_score = score_list[ino].transpose((1,2,0))
p_border = border_list[ino].transpose((1,2,0))
p_tvo = tvo_list[ino].transpose((1,2,0))
p_tco = tco_list[ino].transpose((1,2,0))
# print(p_score.shape, p_border.shape, p_tvo.shape, p_tco.shape)
ratio_h, ratio_w, src_h, src_w = ratio_list[ino]
poly_list = self.detect_sast(p_score, p_tvo, p_border, p_tco, ratio_w, ratio_h, src_w, src_h,
shrink_ratio_of_width=self.shrink_ratio_of_width,
tcl_map_thresh=self.tcl_map_thresh, offset_expand=self.expand_scale)
poly_lists.append(poly_list)
return poly_lists
ppocr/utils/check.py
View file @ aad3093a
......@@ -19,8 +19,6 @@ from __future__ import unicode_literals
import sys
import paddle.fluid as fluid
import logging
logger = logging.getLogger(__name__)
......
ppocr/utils/logging.py 0 → 100644
View file @ aad3093a
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
import logging
import functools
import paddle.distributed as dist
logger_initialized = {}
@functools.lru_cache()
def get_logger(name='ppocr', log_file=None, log_level=logging.INFO):
"""Initialize and get a logger by name.
If the logger has not been initialized, this method will initialize the
logger by adding one or two handlers, otherwise the initialized logger will
be directly returned. During initialization, a StreamHandler will always be
added. If `log_file` is specified a FileHandler will also be added.
Args:
name (str): Logger name.
log_file (str | None): The log filename. If specified, a FileHandler
will be added to the logger.
log_level (int): The logger level. Note that only the process of
rank 0 is affected, and other processes will set the level to
"Error" thus be silent most of the time.
Returns:
logging.Logger: The expected logger.
"""
logger = logging.getLogger(name)
if name in logger_initialized:
return logger
for logger_name in logger_initialized:
if name.startswith(logger_name):
return logger
formatter = logging.Formatter(
'[%(asctime)s] %(name)s %(levelname)s: %(message)s',
datefmt="%Y/%m/%d %H:%M:%S")
stream_handler = logging.StreamHandler(stream=sys.stdout)
stream_handler.setFormatter(formatter)
logger.addHandler(stream_handler)
if log_file is not None and dist.get_rank() == 0:
log_file_folder = os.path.split(log_file)[0]
os.makedirs(log_file_folder, exist_ok=True)
file_handler = logging.FileHandler(log_file, 'a')
file_handler.setFormatter(formatter)
logger.addHandler(file_handler)
if dist.get_rank() == 0:
logger.setLevel(log_level)
else:
logger.setLevel(logging.ERROR)
logger_initialized[name] = True
return logger
ppocr/utils/save_load.py
View file @ aad3093a
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
#
#Licensed under the Apache License, Version 2.0 (the "License");
#you may not use this file except in compliance with the License.
#You may obtain a copy of the License at
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
#Unless required by applicable law or agreed to in writing, software
#distributed under the License is distributed on an "AS IS" BASIS,
#WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#See the License for the specific language governing permissions and
#limitations under the License.
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import
from __future__ import division
......@@ -18,17 +18,15 @@ from __future__ import print_function
import errno
import os
import shutil
import tempfile
import pickle
import six
import paddle.fluid as fluid
import paddle
from .utility import initial_logger
import re
logger = initial_logger()
__all__ = ['init_model', 'save_model', 'load_dygraph_pretrain']
def _mkdir_if_not_exist(path):
def _mkdir_if_not_exist(path, logger):
"""
mkdir if not exists, ignore the exception when multiprocess mkdir together
"""
......@@ -44,90 +42,113 @@ def _mkdir_if_not_exist(path):
raise OSError('Failed to mkdir {}'.format(path))
def _load_state(path):
if os.path.exists(path + '.pdopt'):
# XXX another hack to ignore the optimizer state
tmp = tempfile.mkdtemp()
dst = os.path.join(tmp, os.path.basename(os.path.normpath(path)))
shutil.copy(path + '.pdparams', dst + '.pdparams')
state = fluid.io.load_program_state(dst)
shutil.rmtree(tmp)
else:
state = fluid.io.load_program_state(path)
return state
def load_params(exe, prog, path, ignore_params=[]):
"""
Load model from the given path.
Args:
exe (fluid.Executor): The fluid.Executor object.
prog (fluid.Program): load weight to which Program object.
path (string): URL string or loca model path.
ignore_params (list): ignore variable to load when finetuning.
It can be specified by finetune_exclude_pretrained_params
and the usage can refer to docs/advanced_tutorials/TRANSFER_LEARNING.md
"""
def load_dygraph_pretrain(
model,
logger,
path=None,
load_static_weights=False, ):
if not (os.path.isdir(path) or os.path.exists(path + '.pdparams')):
raise ValueError("Model pretrain path {} does not "
"exists.".format(path))
if load_static_weights:
pre_state_dict = paddle.io.load_program_state(path)
param_state_dict = {}
model_dict = model.state_dict()
for key in model_dict.keys():
weight_name = model_dict[key].name
weight_name = weight_name.replace('binarize', '').replace(
'thresh', '') # for DB
if weight_name in pre_state_dict.keys():
logger.info('Load weight: {}, shape: {}'.format(
weight_name, pre_state_dict[weight_name].shape))
if 'encoder_rnn' in key:
# delete axis which is 1
pre_state_dict[weight_name] = pre_state_dict[
weight_name].squeeze()
# change axis
if len(pre_state_dict[weight_name].shape) > 1:
pre_state_dict[weight_name] = pre_state_dict[
weight_name].transpose((1, 0))
param_state_dict[key] = pre_state_dict[weight_name]
else:
param_state_dict[key] = model_dict[key]
model.set_dict(param_state_dict)
return
param_state_dict, optim_state_dict = paddle.load(path)
model.set_dict(param_state_dict)
return
logger.info('Loading parameters from {}...'.format(path))
ignore_set = set()
state = _load_state(path)
# ignore the parameter which mismatch the shape
# between the model and pretrain weight.
all_var_shape = {}
for block in prog.blocks:
for param in block.all_parameters():
all_var_shape[param.name] = param.shape
ignore_set.update([
name for name, shape in all_var_shape.items()
if name in state and shape != state[name].shape
])
if ignore_params:
all_var_names = [var.name for var in prog.list_vars()]
ignore_list = filter(
lambda var: any([re.match(name, var) for name in ignore_params]),
all_var_names)
ignore_set.update(list(ignore_list))
if len(ignore_set) > 0:
for k in ignore_set:
if k in state:
logger.warning('variable {} not used'.format(k))
del state[k]
fluid.io.set_program_state(prog, state)
def init_model(config, program, exe):
def init_model(config, model, logger, optimizer=None, lr_scheduler=None):
"""
load model from checkpoint or pretrained_model
"""
checkpoints = config['Global'].get('checkpoints')
gloabl_config = config['Global']
checkpoints = gloabl_config.get('checkpoints')
pretrained_model = gloabl_config.get('pretrained_model')
best_model_dict = {}
if checkpoints:
if os.path.exists(checkpoints + '.pdparams'):
path = checkpoints
fluid.load(program, path, exe)
logger.info("Finish initing model from {}".format(path))
assert os.path.exists(checkpoints + ".pdparams"), \
"Given dir {}.pdparams not exist.".format(checkpoints)
assert os.path.exists(checkpoints + ".pdopt"), \
"Given dir {}.pdopt not exist.".format(checkpoints)
para_dict, opti_dict = paddle.load(checkpoints)
model.set_dict(para_dict)
if optimizer is not None:
optimizer.set_state_dict(opti_dict)
if os.path.exists(checkpoints + '.states'):
with open(checkpoints + '.states', 'rb') as f:
states_dict = pickle.load(f) if six.PY2 else pickle.load(
f, encoding='latin1')
best_model_dict = states_dict.get('best_model_dict', {})
if 'epoch' in states_dict:
best_model_dict['start_epoch'] = states_dict['epoch'] + 1
best_model_dict['start_epoch'] = best_model_dict['best_epoch'] + 1
logger.info("resume from {}".format(checkpoints))
elif pretrained_model:
load_static_weights = gloabl_config.get('load_static_weights', False)
if pretrained_model:
if not isinstance(pretrained_model, list):
pretrained_model = [pretrained_model]
if not isinstance(load_static_weights, list):
load_static_weights = [load_static_weights] * len(
pretrained_model)
for idx, pretrained in enumerate(pretrained_model):
load_static = load_static_weights[idx]
load_dygraph_pretrain(
model,
logger,
path=pretrained,
load_static_weights=load_static)
logger.info("load pretrained model from {}".format(
pretrained_model))
else:
raise ValueError("Model checkpoints {} does not exists,"
"check if you lost the file prefix.".format(
checkpoints + '.pdparams'))
else:
pretrain_weights = config['Global'].get('pretrain_weights')
if pretrain_weights:
path = pretrain_weights
load_params(exe, program, path)
logger.info("Finish initing model from {}".format(path))
logger.info('train from scratch')
return best_model_dict
def save_model(program, model_path):
def save_model(net,
optimizer,
model_path,
logger,
is_best=False,
prefix='ppocr',
**kwargs):
"""
save model to the target path
"""
fluid.save(program, model_path)
logger.info("Already save model in {}".format(model_path))
_mkdir_if_not_exist(model_path, logger)
model_prefix = os.path.join(model_path, prefix)
paddle.save(net.state_dict(), model_prefix)
paddle.save(optimizer.state_dict(), model_prefix)
# save metric and config
with open(model_prefix + '.states', 'wb') as f:
pickle.dump(kwargs, f, protocol=2)
if is_best:
logger.info('save best model is to {}'.format(model_prefix))
else:
logger.info("save model in {}".format(model_prefix))
ppocr/utils/stats.py
View file @ aad3093a
......@@ -40,14 +40,18 @@ def Time():
class TrainingStats(object):
def __init__(self, window_size, stats_keys):
self.window_size = window_size
self.smoothed_losses_and_metrics = {
key: SmoothedValue(window_size)
for key in stats_keys
}
def update(self, stats):
for k, v in self.smoothed_losses_and_metrics.items():
v.add_value(stats[k])
for k, v in stats.items():
if k not in self.smoothed_losses_and_metrics:
self.smoothed_losses_and_metrics[k] = SmoothedValue(
self.window_size)
self.smoothed_losses_and_metrics[k].add_value(v)
def get(self, extras=None):
stats = collections.OrderedDict()
......
ppocr/utils/utility.py
View file @ aad3093a
......@@ -16,49 +16,36 @@ import logging
import os
import imghdr
import cv2
from paddle import fluid
def initial_logger():
FORMAT = '%(asctime)s-%(levelname)s: %(message)s'
logging.basicConfig(level=logging.INFO, format=FORMAT)
logger = logging.getLogger(__name__)
return logger
import importlib
def create_module(module_str):
tmpss = module_str.split(",")
assert len(tmpss) == 2, "Error formate\
of the module path: {}".format(module_str)
module_name, function_name = tmpss[0], tmpss[1]
somemodule = importlib.import_module(module_name, __package__)
function = getattr(somemodule, function_name)
return function
def print_dict(d, logger, delimiter=0):
"""
Recursively visualize a dict and
indenting acrrording by the relationship of keys.
"""
for k, v in sorted(d.items()):
if isinstance(v, dict):
logger.info("{}{} : ".format(delimiter * " ", str(k)))
print_dict(v, logger, delimiter + 4)
elif isinstance(v, list) and len(v) >= 1 and isinstance(v[0], dict):
logger.info("{}{} : ".format(delimiter * " ", str(k)))
for value in v:
print_dict(value, logger, delimiter + 4)
else:
logger.info("{}{} : {}".format(delimiter * " ", k, v))
def get_check_global_params(mode):
check_params = ['use_gpu', 'max_text_length', 'image_shape',\
check_params = ['use_gpu', 'max_text_length', 'image_shape', \
'image_shape', 'character_type', 'loss_type']
if mode == "train_eval":
check_params = check_params + [\
check_params = check_params + [ \
'train_batch_size_per_card', 'test_batch_size_per_card']
elif mode == "test":
check_params = check_params + ['test_batch_size_per_card']
return check_params
def get_check_reader_params(mode):
check_params = []
if mode == "train_eval":
check_params = ['TrainReader', 'EvalReader']
elif mode == "test":
check_params = ['TestReader']
return check_params
def get_image_file_list(img_file):
imgs_lists = []
if img_file is None or not os.path.exists(img_file):
......@@ -82,23 +69,11 @@ def check_and_read_gif(img_path):
gif = cv2.VideoCapture(img_path)
ret, frame = gif.read()
if not ret:
logging.info("Cannot read {}. This gif image maybe corrupted.")
logger = logging.getLogger('ppocr')
logger.info("Cannot read {}. This gif image maybe corrupted.")
return None, False
if len(frame.shape) == 2 or frame.shape[-1] == 1:
frame = cv2.cvtColor(frame, cv2.COLOR_GRAY2RGB)
imgvalue = frame[:, :, ::-1]
return imgvalue, True
return None, False
\ No newline at end of file
def create_multi_devices_program(program, loss_var_name):
build_strategy = fluid.BuildStrategy()
build_strategy.memory_optimize = False
build_strategy.enable_inplace = True
exec_strategy = fluid.ExecutionStrategy()
exec_strategy.num_iteration_per_drop_scope = 1
compile_program = fluid.CompiledProgram(program).with_data_parallel(
loss_name=loss_var_name,
build_strategy=build_strategy,
exec_strategy=exec_strategy)
return compile_program
setup.py
View file @ aad3093a
......@@ -15,7 +15,7 @@
from setuptools import setup
from io import open
with open('requirments.txt', encoding="utf-8-sig") as f:
with open('requirements.txt', encoding="utf-8-sig") as f:
requirements = f.readlines()
requirements.append('tqdm')
......
tools/eval.py
View file @ aad3093a
......@@ -18,71 +18,61 @@ from __future__ import print_function
import os
import sys
__dir__ = os.path.dirname(os.path.abspath(__file__))
sys.path.append(__dir__)
sys.path.append(os.path.abspath(os.path.join(__dir__, '..')))
import paddle
# paddle.manual_seed(2)
def set_paddle_flags(**kwargs):
for key, value in kwargs.items():
if os.environ.get(key, None) is None:
os.environ[key] = str(value)
from ppocr.utils.logging import get_logger
from ppocr.data import build_dataloader
from ppocr.modeling import build_model
from ppocr.postprocess import build_post_process
from ppocr.metrics import build_metric
from ppocr.utils.save_load import init_model
from ppocr.utils.utility import print_dict
import tools.program as program
# NOTE(paddle-dev): All of these flags should be
# set before `import paddle`. Otherwise, it would
# not take any effect.
set_paddle_flags(
FLAGS_eager_delete_tensor_gb=0, # enable GC to save memory
)
def main():
global_config = config['Global']
# build dataloader
eval_loader, _ = build_dataloader(config['EVAL'], device, False,
global_config)
import program
from paddle import fluid
from ppocr.utils.utility import initial_logger
logger = initial_logger()
from ppocr.data.reader_main import reader_main
from ppocr.utils.save_load import init_model
from eval_utils.eval_det_utils import eval_det_run
from eval_utils.eval_rec_utils import test_rec_benchmark
from eval_utils.eval_rec_utils import eval_rec_run
# build post process
post_process_class = build_post_process(config['PostProcess'],
global_config)
# build model
# for rec algorithm
if hasattr(post_process_class, 'character'):
config['Architecture']["Head"]['out_channels'] = len(
getattr(post_process_class, 'character'))
model = build_model(config['Architecture'])
def main():
startup_prog, eval_program, place, config, train_alg_type = program.preprocess()
eval_build_outputs = program.build(
config, eval_program, startup_prog, mode='test')
eval_fetch_name_list = eval_build_outputs[1]
eval_fetch_varname_list = eval_build_outputs[2]
eval_program = eval_program.clone(for_test=True)
exe = fluid.Executor(place)
exe.run(startup_prog)
best_model_dict = init_model(config, model, logger)
if len(best_model_dict):
logger.info('metric in ckpt ***************')
for k, v in best_model_dict.items():
logger.info('{}:{}'.format(k, v))
init_model(config, eval_program, exe)
# build metric
eval_class = build_metric(config['Metric'])
if train_alg_type == 'det':
eval_reader = reader_main(config=config, mode="eval")
eval_info_dict = {'program':eval_program,\
'reader':eval_reader,\
'fetch_name_list':eval_fetch_name_list,\
'fetch_varname_list':eval_fetch_varname_list}
metrics = eval_det_run(exe, config, eval_info_dict, "eval")
logger.info("Eval result: {}".format(metrics))
else:
reader_type = config['Global']['reader_yml']
if "benchmark" not in reader_type:
eval_reader = reader_main(config=config, mode="eval")
eval_info_dict = {'program': eval_program, \
'reader': eval_reader, \
'fetch_name_list': eval_fetch_name_list, \
'fetch_varname_list': eval_fetch_varname_list}
metrics = eval_rec_run(exe, config, eval_info_dict, "eval")
logger.info("Eval result: {}".format(metrics))
else:
eval_info_dict = {'program':eval_program,\
'fetch_name_list':eval_fetch_name_list,\
'fetch_varname_list':eval_fetch_varname_list}
test_rec_benchmark(exe, config, eval_info_dict)
# start eval
metirc = program.eval(model, eval_loader, post_process_class, eval_class)
logger.info('metric eval ***************')
for k, v in metirc.items():
logger.info('{}:{}'.format(k, v))
if __name__ == '__main__':
device, config = program.preprocess()
paddle.disable_static(device)
logger = get_logger()
print_dict(config, logger)
main()
tools/eval_utils/eval_det_utils.py deleted 100644 → 0
View file @ 10f7e519
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import logging
import numpy as np
import paddle.fluid as fluid
__all__ = ['eval_det_run']
import logging
FORMAT = '%(asctime)s-%(levelname)s: %(message)s'
logging.basicConfig(level=logging.INFO, format=FORMAT)
logger = logging.getLogger(__name__)
from ppocr.utils.utility import create_module
from .eval_det_iou import DetectionIoUEvaluator
import json
from copy import deepcopy
import cv2
from ppocr.data.reader_main import reader_main
import os
def cal_det_res(exe, config, eval_info_dict):
global_params = config['Global']
save_res_path = global_params['save_res_path']
postprocess_params = deepcopy(config["PostProcess"])
postprocess_params.update(global_params)
postprocess = create_module(postprocess_params['function']) \
(params=postprocess_params)
if not os.path.exists(os.path.dirname(save_res_path)):
os.makedirs(os.path.dirname(save_res_path))
with open(save_res_path, "wb") as fout:
tackling_num = 0
for data in eval_info_dict['reader']():
img_num = len(data)
tackling_num = tackling_num + img_num
logger.info("test tackling num:%d", tackling_num)
img_list = []
ratio_list = []
img_name_list = []
for ino in range(img_num):
img_list.append(data[ino][0])
ratio_list.append(data[ino][1])
img_name_list.append(data[ino][2])
try:
img_list = np.concatenate(img_list, axis=0)
except:
err = "concatenate error usually caused by different input image shapes in evaluation or testing.\n \
Please set \"test_batch_size_per_card\" in main yml as 1\n \
or add \"test_image_shape: [h, w]\" in reader yml for EvalReader."
raise Exception(err)
outs = exe.run(eval_info_dict['program'], \
feed={'image': img_list}, \
fetch_list=eval_info_dict['fetch_varname_list'])
outs_dict = {}
for tno in range(len(outs)):
fetch_name = eval_info_dict['fetch_name_list'][tno]
fetch_value = np.array(outs[tno])
outs_dict[fetch_name] = fetch_value
dt_boxes_list = postprocess(outs_dict, ratio_list)
for ino in range(img_num):
dt_boxes = dt_boxes_list[ino]
img_name = img_name_list[ino]
dt_boxes_json = []
for box in dt_boxes:
tmp_json = {"transcription": ""}
tmp_json['points'] = box.tolist()
dt_boxes_json.append(tmp_json)
otstr = img_name + "\t" + json.dumps(dt_boxes_json) + "\n"
fout.write(otstr.encode())
return
def load_label_infor(label_file_path, do_ignore=False):
img_name_label_dict = {}
with open(label_file_path, "rb") as fin:
lines = fin.readlines()
for line in lines:
substr = line.decode().strip("\n").split("\t")
bbox_infor = json.loads(substr[1])
bbox_num = len(bbox_infor)
for bno in range(bbox_num):
text = bbox_infor[bno]['transcription']
ignore = False
if text == "###" and do_ignore:
ignore = True
bbox_infor[bno]['ignore'] = ignore
img_name_label_dict[os.path.basename(substr[0])] = bbox_infor
return img_name_label_dict
def cal_det_metrics(gt_label_path, save_res_path):
"""
calculate the detection metrics
Args:
gt_label_path(string): The groundtruth detection label file path
save_res_path(string): The saved predicted detection label path
return:
claculated metrics including Hmean, precision and recall
"""
evaluator = DetectionIoUEvaluator()
gt_label_infor = load_label_infor(gt_label_path, do_ignore=True)
dt_label_infor = load_label_infor(save_res_path)
results = []
for img_name in gt_label_infor:
gt_label = gt_label_infor[img_name]
if img_name not in dt_label_infor:
dt_label = []
else:
dt_label = dt_label_infor[img_name]
result = evaluator.evaluate_image(gt_label, dt_label)
results.append(result)
methodMetrics = evaluator.combine_results(results)
return methodMetrics
def eval_det_run(exe, config, eval_info_dict, mode):
cal_det_res(exe, config, eval_info_dict)
save_res_path = config['Global']['save_res_path']
if mode == "eval":
gt_label_path = config['EvalReader']['label_file_path']
metrics = cal_det_metrics(gt_label_path, save_res_path)
else:
gt_label_path = config['TestReader']['label_file_path']
do_eval = config['TestReader']['do_eval']
if do_eval:
metrics = cal_det_metrics(gt_label_path, save_res_path)
else:
metrics = {}
return metrics
tools/eval_utils/eval_rec_utils.py deleted 100644 → 0
View file @ 10f7e519
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import logging
import numpy as np
import paddle.fluid as fluid
__all__ = ['eval_rec_run', 'test_rec_benchmark']
import logging
FORMAT = '%(asctime)s-%(levelname)s: %(message)s'
logging.basicConfig(level=logging.INFO, format=FORMAT)
logger = logging.getLogger(__name__)
from ppocr.utils.character import cal_predicts_accuracy, cal_predicts_accuracy_srn
from ppocr.utils.character import convert_rec_label_to_lod
from ppocr.utils.character import convert_rec_attention_infer_res
from ppocr.utils.utility import create_module
import json
from copy import deepcopy
import cv2
from ppocr.data.reader_main import reader_main
def eval_rec_run(exe, config, eval_info_dict, mode):
"""
Run evaluation program, return program outputs.
"""
char_ops = config['Global']['char_ops']
total_loss = 0
total_sample_num = 0
total_acc_num = 0
total_batch_num = 0
if mode == "eval":
is_remove_duplicate = False
else:
is_remove_duplicate = True
for data in eval_info_dict['reader']():
img_num = len(data)
img_list = []
label_list = []
for ino in range(img_num):
img_list.append(data[ino][0])
label_list.append(data[ino][1])
if config['Global']['loss_type'] != "srn":
img_list = np.concatenate(img_list, axis=0)
outs = exe.run(eval_info_dict['program'], \
feed={'image': img_list}, \
fetch_list=eval_info_dict['fetch_varname_list'], \
return_numpy=False)
preds = np.array(outs[0])
if config['Global']['loss_type'] == "attention":
preds, preds_lod = convert_rec_attention_infer_res(preds)
else:
preds_lod = outs[0].lod()[0]
labels, labels_lod = convert_rec_label_to_lod(label_list)
acc, acc_num, sample_num = cal_predicts_accuracy(
char_ops, preds, preds_lod, labels, labels_lod,
is_remove_duplicate)
else:
encoder_word_pos_list = []
gsrm_word_pos_list = []
gsrm_slf_attn_bias1_list = []
gsrm_slf_attn_bias2_list = []
for ino in range(img_num):
encoder_word_pos_list.append(data[ino][2])
gsrm_word_pos_list.append(data[ino][3])
gsrm_slf_attn_bias1_list.append(data[ino][4])
gsrm_slf_attn_bias2_list.append(data[ino][5])
img_list = np.concatenate(img_list, axis=0)
label_list = np.concatenate(label_list, axis=0)
encoder_word_pos_list = np.concatenate(
encoder_word_pos_list, axis=0).astype(np.int64)
gsrm_word_pos_list = np.concatenate(
gsrm_word_pos_list, axis=0).astype(np.int64)
gsrm_slf_attn_bias1_list = np.concatenate(
gsrm_slf_attn_bias1_list, axis=0).astype(np.float32)
gsrm_slf_attn_bias2_list = np.concatenate(
gsrm_slf_attn_bias2_list, axis=0).astype(np.float32)
labels = label_list
outs = exe.run(eval_info_dict['program'], \
feed={'image': img_list, 'encoder_word_pos': encoder_word_pos_list,
'gsrm_word_pos': gsrm_word_pos_list, 'gsrm_slf_attn_bias1': gsrm_slf_attn_bias1_list,
'gsrm_slf_attn_bias2': gsrm_slf_attn_bias2_list}, \
fetch_list=eval_info_dict['fetch_varname_list'], \
return_numpy=False)
preds = np.array(outs[0])
acc, acc_num, sample_num = cal_predicts_accuracy_srn(
char_ops, preds, labels, config['Global']['max_text_length'])
total_acc_num += acc_num
total_sample_num += sample_num
#logger.info("eval batch id: {}, acc: {}".format(total_batch_num, acc))
total_batch_num += 1
avg_acc = total_acc_num * 1.0 / total_sample_num
metrics = {'avg_acc': avg_acc, "total_acc_num": total_acc_num, \
"total_sample_num": total_sample_num}
return metrics
def test_rec_benchmark(exe, config, eval_info_dict):
" Evaluate lmdb dataset "
eval_data_list = ['IIIT5k_3000', 'SVT', 'IC03_860', 'IC03_867', \
'IC13_857', 'IC13_1015', 'IC15_1811', 'IC15_2077', 'SVTP', 'CUTE80']
eval_data_dir = config['TestReader']['lmdb_sets_dir']
total_evaluation_data_number = 0
total_correct_number = 0
eval_data_acc_info = {}
for eval_data in eval_data_list:
config['TestReader']['lmdb_sets_dir'] = \
eval_data_dir + "/" + eval_data
eval_reader = reader_main(config=config, mode="test")
eval_info_dict['reader'] = eval_reader
metrics = eval_rec_run(exe, config, eval_info_dict, "test")
total_evaluation_data_number += metrics['total_sample_num']
total_correct_number += metrics['total_acc_num']
eval_data_acc_info[eval_data] = metrics
avg_acc = total_correct_number * 1.0 / total_evaluation_data_number
logger.info('-' * 50)
strs = ""
for eval_data in eval_data_list:
eval_acc = eval_data_acc_info[eval_data]['avg_acc']
strs += "\n {}, accuracy:{:.6f}".format(eval_data, eval_acc)
strs += "\n average, accuracy:{:.6f}".format(avg_acc)
logger.info(strs)
logger.info('-' * 50)
tools/export_model.py deleted 100644 → 0
View file @ 10f7e519
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import sys
__dir__ = os.path.dirname(os.path.abspath(__file__))
sys.path.append(__dir__)
sys.path.append(os.path.abspath(os.path.join(__dir__, '..')))
def set_paddle_flags(**kwargs):
for key, value in kwargs.items():
if os.environ.get(key, None) is None:
os.environ[key] = str(value)
# NOTE(paddle-dev): All of these flags should be
# set before `import paddle`. Otherwise, it would
# not take any effect.
set_paddle_flags(
FLAGS_eager_delete_tensor_gb=0, # enable GC to save memory
)
import program
from paddle import fluid
from ppocr.utils.utility import initial_logger
logger = initial_logger()
from ppocr.utils.save_load import init_model
def main():
startup_prog, eval_program, place, config, _ = program.preprocess()
feeded_var_names, target_vars, fetches_var_name = program.build_export(
config, eval_program, startup_prog)
eval_program = eval_program.clone(for_test=True)
exe = fluid.Executor(place)
exe.run(startup_prog)
init_model(config, eval_program, exe)
save_inference_dir = config['Global']['save_inference_dir']
if not os.path.exists(save_inference_dir):
os.makedirs(save_inference_dir)
fluid.io.save_inference_model(
dirname=save_inference_dir,
feeded_var_names=feeded_var_names,
main_program=eval_program,
target_vars=target_vars,
executor=exe,
model_filename='model',
params_filename='params')
print("inference model saved in {}/model and {}/params".format(
save_inference_dir, save_inference_dir))
print("save success, output_name_list:", fetches_var_name)
if __name__ == '__main__':
main()
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