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/*
* Copyright (c) 2003-2023, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @defgroup python Python API
*/
/**
* @file pyinterp.h
* @author John Wiegley
*
* @ingroup python
*
* @brief Basic type for Python API.
*/
#pragma once
#include "session.h"
#if HAVE_BOOST_PYTHON
namespace ledger {
class python_module_t : public scope_t, public noncopyable
{
public:
string module_name;
boost::python::object module_object;
boost::python::dict module_globals;
explicit python_module_t(const string& name);
explicit python_module_t(const string& name, boost::python::object obj);
void import_module(const string& name, bool import_direct = false);
virtual expr_t::ptr_op_t lookup(const symbol_t::kind_t kind,
const string& name);
void define_global(const string& name, boost::python::object obj) {
module_globals[name] = obj;
}
virtual string description() {
return module_name;
}
};
typedef std::map<PyObject *, shared_ptr<python_module_t> > python_module_map_t;
class python_interpreter_t : public session_t
{
public:
bool is_initialized;
shared_ptr<python_module_t> main_module;
python_module_map_t modules_map;
shared_ptr<python_module_t> import_module(const string& name) {
shared_ptr<python_module_t> mod(new python_module_t(name));
if (name != "__main__")
main_module->define_global(name, mod->module_object);
return mod;
}
python_interpreter_t() : session_t(), is_initialized(false) {
TRACE_CTOR(python_interpreter_t, "");
}
virtual ~python_interpreter_t() {
TRACE_DTOR(python_interpreter_t);
if (is_initialized)
Py_Finalize();
}
void initialize();
void hack_system_paths();
boost::python::object import_option(const string& name);
enum py_eval_mode_t {
PY_EVAL_EXPR,
PY_EVAL_STMT,
PY_EVAL_MULTI
};
boost::python::object eval(std::istream& in, py_eval_mode_t mode = PY_EVAL_EXPR);
boost::python::object eval(const string& str, py_eval_mode_t mode = PY_EVAL_EXPR);
boost::python::object eval(const char * c_str, py_eval_mode_t mode = PY_EVAL_EXPR) {
return eval(string(c_str), mode);
}
value_t python_command(call_scope_t& scope);
class functor_t {
functor_t();
protected:
boost::python::object func;
public:
string name;
functor_t(boost::python::object _func, const string& _name)
: func(_func), name(_name) {
TRACE_CTOR(functor_t, "boost::python::object, const string&");
}
functor_t(const functor_t& other)
: func(other.func), name(other.name) {
TRACE_CTOR(functor_t, "copy");
}
virtual ~functor_t() throw() {
TRACE_DTOR(functor_t);
}
virtual value_t operator()(call_scope_t& args);
};
option_t<python_interpreter_t> * lookup_option(const char * p);
virtual expr_t::ptr_op_t lookup(const symbol_t::kind_t kind,
const string& name);
OPTION_(python_interpreter_t, import_, DO_(str) {
parent->import_option(str);
});
};
extern shared_ptr<python_interpreter_t> python_session;
} // namespace ledger
#endif // HAVE_BOOST_PYTHON
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