mirror of
https://github.com/worldforge/cyphesis
synced 2026-08-13 12:26:04 -04:00
98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
// Cyphesis Online RPG Server and AI Engine
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// Copyright (C) 2009 Alistair Riddoch
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#include <Python.h>
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#include <Python-ast.h>
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#include "PythonContext.h"
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#include "common/log.h"
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PythonContext::PythonContext()
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{
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PyObject * m = PyImport_AddModule("__main__");
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if (m == NULL) {
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log(ERROR, "Could not import __main__");
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return;
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}
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m_globals = PyModule_GetDict(m);
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m_locals = PyDict_New();
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m_arena = PyArena_New();
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}
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static PyObject *
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run_mod(mod_ty mod, const char *filename, PyObject *globals, PyObject *locals,
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PyCompilerFlags *flags, PyArena *arena)
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{
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PyCodeObject *co;
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PyObject *v;
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co = PyAST_Compile(mod, filename, flags, arena);
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if (co == NULL)
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return NULL;
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v = PyEval_EvalCode(co, globals, locals);
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Py_DECREF(co);
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return v;
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}
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std::string PythonContext::runCommand(const std::string & s)
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{
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// This is expanded from PyRun_SimpleString in the Python library
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// so that we can report errors better at the parsing stage
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PyObject *ret = NULL;
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mod_ty mod;
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mod = PyParser_ASTFromString(s.c_str(),
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"<string>",
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Py_single_input,
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NULL,
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m_arena);
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if (mod == NULL) {
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PyErr_Print();
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return "[parseerror]";
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}
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ret = run_mod(mod, "<string>", m_globals, m_locals, NULL, m_arena);
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if (ret == NULL) {
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PyErr_Print();
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return "ERROR";
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}
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PyObject * repr = PyObject_Repr(ret);
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if (repr == 0) {
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return "[undecodable]";
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}
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return PyString_AsString(repr);
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#if 0
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PyObject * res = PyRun_String(s.c_str(),
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Py_single_input,
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m_globals,
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m_locals);
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if (res == 0) {
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if (PyErr_Occurred() == 0) {
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return "WHAT";
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} else {
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PyErr_Print();
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return "ERROR";
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}
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}
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PyObject * repr = PyObject_Repr(res);
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if (repr == 0) {
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return "[undecodable]";
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}
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return PyString_AsString(repr);
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#endif
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}
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