Method evalDoubleStringExpression

SRC/interpreter/PythonModule.cpp:340–375

}

int 
PythonModule::evalDoubleStringExpression(const char* theExpression, double& current_val)
{
    if (theExpression == 0) {
        opserr << "OPS_EvalDoubleStringExpression Error: Expression not set\n";
        return -1;
    }

    // run the string and get results
    PyObject* py_main = PyImport_AddModule("__main__");
    if (py_main == NULL) {
        opserr << "OPS_EvalDoubleStringExpression Error: cannot add module  __main__\n";
        return -1;
    }
    PyObject* py_dict = PyModule_GetDict(py_main);
    if (py_main == NULL) {
        opserr << "OPS_EvalDoubleStringExpression Error: cannot get dict of module __main__\n";
        return -1;
    }
    PyObject* PyRes = PyRun_String(theExpression, Py_eval_input, py_dict, py_dict);

    if (PyRes == NULL) {
        opserr << "OPS_EvalDoubleStringExpression Error: failed to evaluate expression\n";
        return -1;
    }

    // get results
    if (!(PyLong_Check(PyRes) || PyFloat_Check(PyRes) || PyBool_Check(PyRes))) {
        opserr << "OPS_EvalDoubleStringExpression Error: the expression must return a float (or int or bool)\n";
        return -1;
    }
    current_val = PyFloat_AsDouble(PyRes);

    // done
    return 0;
}

void
PythonModule::resetInput(int cArg) {