annotate pyexec.cc @ 410:95c6ad0be828

Delete unused boost::python::numeric includes and initialization * oct-py-init.cc (pytave::py_init): Remove unused initialization of boost::python::numeric. * pycall.cc, pyeval.cc, pyexec.cc, python_to_octave.cc: Remove "#include <boost/python/numeric.hpp>".
author Mike Miller <mtmiller@octave.org>
date Tue, 02 May 2017 17:40:01 -0700
parents 16e79a1e96b8
children 3613ffbd52b2
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1 /*
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2
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3 Copyright (C) 2016 Colin B. Macdonald
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4
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5 This file is part of Pytave.
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6
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7 Pytave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Pytave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Pytave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if defined (HAVE_CONFIG_H)
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24 # include <config.h>
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25 #endif
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26
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27 #include <dlfcn.h>
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28 #include <boost/python.hpp>
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29
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30 #include <oct.h>
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31
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32 #include "exceptions.h"
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33 #include "oct-py-eval.h"
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34 #include "oct-py-init.h"
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35 #include "oct-py-util.h"
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36 #include "python_to_octave.h"
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37
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38 DEFUN_DLD (pyexec, args, nargout,
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39 "-*- texinfo -*-\n\
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40 @deftypefn {} {} pyexec (@var{expr})\n\
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41 @deftypefnx {} {} pyexec (@var{expr}, @var{localns})\n\
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42 Execute a Python expression or block of code.\n\
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43 \n\
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44 When called with an optional second argument, @var{localns} is a\n\
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45 @code{py.dict} that acts as the namespace for any assignments or other\n\
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46 side effects of the expression.\n\
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47 \n\
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48 Examples:\n\
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49 @example\n\
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50 @group\n\
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51 pyexec (\"print(42)\")\n\
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52 @print{} 42\n\
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53 @end group\n\
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54 @end example\n\
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55 @seealso{pycall, pyeval}\n\
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56 @end deftypefn")
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57 {
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58 octave_value_list retval;
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59
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60 int nargin = args.length ();
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61
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62 if (nargin < 1 || nargin > 2)
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63 {
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64 print_usage ();
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65 return retval;
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66 }
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67
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68 std::string code = args(0).string_value ();
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69
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70 pytave::py_init ();
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71
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72 PyObject *local_namespace = nullptr;
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73 if (nargin > 1)
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74 {
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75 local_namespace = pytave::pyobject_unwrap_object (args(1));
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76 if (! local_namespace)
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77 error ("pyexec: NAMESPACE must be a valid Python reference");
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78 }
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79
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80 try
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81 {
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82 // FIXME: figure out exec return code:
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83 // http://www.boost.org/doc/libs/1_38_0/libs/python/doc/v2/exec.html
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84 pytave::py_exec_string (code, 0, local_namespace);
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85 }
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86 catch (pytave::object_convert_exception const &)
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87 {
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88 error ("pyexec: error in return value type conversion");
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89 }
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90 catch (boost::python::error_already_set const &)
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91 {
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92 std::string message = pytave::fetch_exception_message ();
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93 error ("pyexec: %s", message.c_str ());
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94 }
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95 return retval;
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96 }
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97
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98 /*
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99 %!error <NameError>
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100 %! pyexec ("raise NameError ('oops')")
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101
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102 %!error <AttributeError>
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103 %! pyexec ("import sys")
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104 %! pyexec ("sys.no_such_thing")
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105 */