/// <summary>
/// Eval method
/// </summary>
/// <remarks>
/// Evaluate a Python expression and return the result as a PyObject
/// or null if an exception is raised.
/// </remarks>
public PyObject Eval(string code, PyDict locals = null)
{
Check();
BorrowedReference _locals = locals == null ? VarsRef : locals.Reference;
NewReference reference = Runtime.PyRun_String(
code, RunFlagType.Eval, VarsRef, _locals
);
PythonException.ThrowIfIsNull(reference);
return(reference.MoveToPyObject());
}
/// <summary>
/// Eval method
/// </summary>
/// <remarks>
/// Evaluate a Python expression and return the result as a PyObject
/// or null if an exception is raised.
/// </remarks>
public PyObject Eval(string code, PyDict locals = null)
{
Check();
IntPtr _locals = locals == null ? variables : locals.obj;
NewReference reference = Runtime.PyRun_String(
code, RunFlagType.Eval, variables, _locals
);
PythonException.ThrowIfIsNull(reference);
return(reference.MoveToPyObject());
}
/// <summary>
/// Internal RunString Method.
/// </summary>
/// <remarks>
/// Run a string containing Python code. Returns the result of
/// executing the code string as a PyObject instance, or null if
/// an exception was raised.
/// </remarks>
internal static PyObject RunString(string code, IntPtr?globals, IntPtr?locals, RunFlagType flag)
{
var borrowedGlobals = true;
if (globals == null)
{
globals = Runtime.PyEval_GetGlobals();
if (globals == IntPtr.Zero)
{
globals = Runtime.PyDict_New();
Runtime.PyDict_SetItemString(
globals.Value, "__builtins__",
Runtime.PyEval_GetBuiltins()
);
borrowedGlobals = false;
}
}
if (locals == null)
{
locals = globals;
}
try
{
NewReference result = Runtime.PyRun_String(
code, (IntPtr)flag, globals.Value, locals.Value
);
try
{
Runtime.CheckExceptionOccurred();
return(result.MoveToPyObject());
}
finally
{
result.Dispose();
}
}
finally
{
if (!borrowedGlobals)
{
Runtime.XDecref(globals.Value);
}
}
}
public bool MoveNext()
{
NewReference next = Runtime.PyIter_Next(Reference);
if (next.IsNull())
{
if (Exceptions.ErrorOccurred())
{
throw new PythonException();
}
// stop holding the previous object, if there was one
_current = null;
return(false);
}
_current = next.MoveToPyObject();
return(true);
}
/// <summary>
/// Constructor
/// </summary>
/// <remarks>
/// Create a scope based on a Python Module.
/// </remarks>
internal PyScope(ref NewReference ptr, PyScopeManager manager)
{
if (!Runtime.PyType_IsSubtype(Runtime.PyObject_TYPE(ptr), Runtime.PyModuleType))
{
throw new PyScopeException("object is not a module");
}
Manager = manager ?? PyScopeManager.Global;
obj = ptr.MoveToPyObject();
//Refcount of the variables not increase
variables = Runtime.PyModule_GetDict(Reference).DangerousGetAddress();
PythonException.ThrowIfIsNull(variables);
int res = Runtime.PyDict_SetItem(
VarsRef, PyIdentifier.__builtins__,
Runtime.PyEval_GetBuiltins()
);
PythonException.ThrowIfIsNotZero(res);
this.Name = this.Get <string>("__name__");
}
/// <summary>
/// Eval method
/// </summary>
/// <remarks>
/// Evaluate a Python expression and return the result as a PyObject
/// or null if an exception is raised.
/// </remarks>
public PyObject Eval(string code, PyDict locals = null)
{
Check();
IntPtr _locals = locals == null ? variables : locals.obj;
var flag = (IntPtr)Runtime.Py_eval_input;
NewReference reference = Runtime.PyRun_String(
code, flag, variables, _locals
);
try
{
Runtime.CheckExceptionOccurred();
return(reference.MoveToPyObject());
}
finally
{
reference.Dispose();
}
}
