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libs/python/src/exec.cpp: bug fixes

Remark:
  operator!() for boost::python::object invokes PyObject_IsTrue()
  and is therefore not equivalent to "is None".
  In this particular case !global or !local returns true for an
  empty dict.
(Changes to libs/python/test/exec.cpp just helped in debugging.)


[SVN r55639]
This commit is contained in:
Ralf W. Grosse-Kunstleve
2009-08-18 00:24:54 +00:00
parent d47e3b2a15
commit 8d2ca93e98
2 changed files with 41 additions and 32 deletions

View File

@@ -17,14 +17,15 @@ namespace python
object BOOST_PYTHON_DECL eval(str string, object global, object local)
{
// Set suitable default values for global and local dicts.
if (!global)
object none;
if (global.ptr() == none.ptr())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (!local) local = global;
if (local.ptr() == none.ptr()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *s = python::extract<char *>(string);
PyObject* result = PyRun_String(s, Py_eval_input, global.ptr(), local.ptr());
@@ -35,14 +36,15 @@ object BOOST_PYTHON_DECL eval(str string, object global, object local)
object BOOST_PYTHON_DECL exec(str string, object global, object local)
{
// Set suitable default values for global and local dicts.
if (!global)
object none;
if (global.ptr() == none.ptr())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (!local) local = global;
if (local.ptr() == none.ptr()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *s = python::extract<char *>(string);
PyObject* result = PyRun_String(s, Py_file_input, global.ptr(), local.ptr());
@@ -53,14 +55,15 @@ object BOOST_PYTHON_DECL exec(str string, object global, object local)
object BOOST_PYTHON_DECL exec_statement(str string, object global, object local)
{
// Set suitable default values for global and local dicts.
if (!global)
object none;
if (global.ptr() == none.ptr())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (!local) local = global;
if (local.ptr() == none.ptr()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *s = python::extract<char *>(string);
PyObject* result = PyRun_String(s, Py_single_input, global.ptr(), local.ptr());
@@ -74,14 +77,15 @@ object BOOST_PYTHON_DECL exec_statement(str string, object global, object local)
object BOOST_PYTHON_DECL exec_file(str filename, object global, object local)
{
// Set suitable default values for global and local dicts.
if (!global)
object none;
if (global.ptr() == none.ptr())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (!local) local = global;
if (local.ptr() == none.ptr()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *f = python::extract<char *>(filename);
// Let python open the file to avoid potential binary incompatibilities.