Mercurial > pytave
annotate pyeval.cc @ 423:6b9de18b4bdd
Eliminate remaining custom exception handling in favor of Octave errors
* oct-py-error.cc, oct-py-error.h (pytave::error_python_exception): New function
to generate an Octave error from an active Python error condition, based on
pytave::fetch_exception_message.
* oct-py-eval.cc (pytave::py_call_function, pytave::py_run_string_safe): Use it.
* oct-py-types.cc (pytave::make_py_dict): Likewise.
* oct-py-util.cc (pytave::py_objstore): Likewise.
* pycall.cc (Fpycall): Remove exception handling logic.
* pyeval.cc (Fpyeval): Likewise.
* pyexec.cc (Fpyexec): Likewise.
* exceptions.cc, exceptions.h: Delete.
* Makefile.am (COMMON_SOURCE_FILES, PYTAVE_HEADER_FILES): Remove them.
author | Mike Miller <mtmiller@octave.org> |
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date | Thu, 04 May 2017 21:15:07 -0700 |
parents | 8247f298fd16 |
children | 3af3665348a1 |
rev | line source |
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161 | 1 /* |
2 | |
3 Copyright (C) 2016 Colin B. Macdonald | |
4 | |
5 This file is part of Pytave. | |
6 | |
7 Pytave is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
9 Free Software Foundation; either version 3 of the License, or (at your | |
10 option) any later version. | |
11 | |
12 Pytave is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with Pytave; see the file COPYING. If not, see | |
19 <http://www.gnu.org/licenses/>. | |
20 | |
21 */ | |
22 | |
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23 #if defined (HAVE_CONFIG_H) |
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24 # include <config.h> |
161 | 25 #endif |
26 | |
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27 #include <Python.h> |
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28 #include <octave/oct.h> |
161 | 29 |
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30 #include "oct-py-eval.h" |
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31 #include "oct-py-init.h" |
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32 #include "oct-py-object.h" |
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33 #include "oct-py-types.h" |
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34 #include "oct-py-util.h" |
161 | 35 |
36 DEFUN_DLD (pyeval, args, nargout, | |
37 "-*- texinfo -*-\n\ | |
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38 @deftypefn {} {} pyeval (@var{expr})\n\ |
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39 @deftypefnx {} {} pyeval (@var{expr}, @var{localns})\n\ |
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40 @deftypefnx {} {@var{x} =} pyeval (@dots{})\n\ |
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41 Evaluate a Python expression and return the result.\n\ |
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42 \n\ |
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43 When called with an optional second argument, @var{localns} is a\n\ |
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44 @code{py.dict} that acts as the namespace for any assignments or other\n\ |
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45 side effects of the expression.\n\ |
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46 \n\ |
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47 Examples:\n\ |
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48 @example\n\ |
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49 @group\n\ |
176 | 50 pyexec (\"import sys\")\n\ |
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51 pyeval (\"sys.version\")\n\ |
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52 @result{} ...\n\ |
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53 pyeval (\"dict(two=2)\")\n\ |
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54 @result{} [pyobject ...]\n\ |
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55 @{'two': 2@}\n\ |
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56 @end group\n\ |
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57 @end example\n\ |
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58 @seealso{pycall, pyexec}\n\ |
161 | 59 @end deftypefn") |
60 { | |
61 octave_value_list retval; | |
62 | |
63 int nargin = args.length (); | |
64 | |
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65 if (nargin < 1 || nargin > 2) |
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66 { |
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67 print_usage (); |
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68 return retval; |
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69 } |
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70 |
161 | 71 std::string code = args(0).string_value (); |
72 | |
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73 pytave::py_init (); |
161 | 74 |
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75 PyObject *local_namespace = nullptr; |
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76 if (nargin > 1) |
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77 { |
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78 local_namespace = pytave::pyobject_unwrap_object (args(1)); |
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79 if (! local_namespace) |
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80 error ("pyeval: NAMESPACE must be a valid Python reference"); |
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81 } |
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82 |
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83 pytave::python_object res = pytave::py_eval_string (code, 0, local_namespace); |
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84 |
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85 if (nargout > 0 || ! res.is_none ()) |
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86 retval(0) = pytave::py_implicitly_convert_return_value (res); |
161 | 87 |
88 return retval; | |
89 } | |
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90 |
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91 /* |
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92 %!assert (isnumeric (double (pyeval ("0")))) |
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93 %!assert (isreal (double (pyeval ("0")))) |
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94 %!assert (double (pyeval ("0")), 0) |
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95 |
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96 %!assert (isnumeric (pyeval ("10.1"))) |
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97 %!assert (isreal (pyeval ("10.1"))) |
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98 %!assert (pyeval ("10.1"), 10.1) |
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99 |
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100 %!assert (isnumeric (pyeval ("2j"))) |
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101 %!assert (iscomplex (pyeval ("2j"))) |
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102 %!assert (pyeval ("2j"), 2j) |
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103 |
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104 %!assert (ischar (char (pyeval ("\"I <3 Octave\"")))) |
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105 %!assert (char (pyeval ("\"I <3 Octave\"")), "I <3 Octave") |
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106 |
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107 %!assert (islogical (pyeval ("True"))) |
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108 %!assert (islogical (pyeval ("False"))) |
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109 %!assert (pyeval ("True"), true) |
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110 %!assert (pyeval ("False"), false) |
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111 %!assert (class (pyeval ("True")), "logical") |
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112 %!assert (class (pyeval ("False")), "logical") |
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113 |
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114 %!assert (isa (pyeval ("object()"), "pyobject")) |
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116 %!assert (isnumeric (double (pyeval ("__import__('sys').maxsize")))) |
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117 %!assert (double (pyeval ("99999999999999")), 99999999999999) |
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118 %!assert (double (pyeval ("-99999999999999")), -99999999999999) |
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119 |
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120 %!test |
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121 %! z = pyeval ("{'x': 1., 'y': 2.}"); |
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122 %! assert (isa (z, "pyobject")) |
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123 %! assert (z{"x"}, 1) |
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124 |
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125 %!test |
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126 %! z = pyeval ("[1., 2., 3.]"); |
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128 %! assert ({z{1}, z{2}, z{3}}, {1, 2, 3}) |
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129 |
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130 %!test |
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131 %! z = pyeval ("(4., 5., 6.)"); |
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132 %! assert (isa (z, "pyobject")) |
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133 %! assert ({z{1}, z{2}, z{3}}, {4, 5, 6}) |
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134 |
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135 %!test |
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136 %! z = pyeval ("[1., [21., 22.], 3., [41., [421., 422.], 43.]]"); |
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137 %! assert (isa (z, "pyobject")) |
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138 %! assert (isa (z{2}, "pyobject")) |
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139 %! assert (z{2}{1}, 21) |
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140 %! assert (z{2}{2}, 22) |
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141 %! assert (isa (z{4}{2}, "pyobject")) |
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142 %! assert (z{4}{2}{1}, 421) |
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143 %! assert (z{4}{2}{2}, 422) |
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144 |
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145 %!error <NameError> |
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146 %! pyexec ("def raiseException(): raise NameError ('oops')") |
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147 %! pyeval ("raiseException()") |
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148 |
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149 %!test |
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150 %! % Variable defined in global namespace is available locally |
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151 %! myNS = pyeval ("{}"); |
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152 %! pyexec ("myvar = 1.") |
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153 %! assert (pyeval ("myvar", myNS), 1); |
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154 |
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155 %!test |
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156 %! % Variables with same name can have different values in different namespaces |
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157 %! myNS1 = pyeval ("{}"); |
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158 %! myNS2 = pyeval ("{}"); |
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159 %! pyexec ("myvar = 1.") |
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160 %! pyexec ("myvar = 2.", myNS1) |
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161 %! pyexec ("myvar = 3.", myNS2) |
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162 %! assert (pyeval ("myvar"), 1) |
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163 %! assert (pyeval ("myvar", myNS1), 2) |
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164 %! assert (pyeval ("myvar", myNS2), 3) |
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165 |
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166 %!error <NameError> |
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167 %! pyexec ("if 'myvar' in globals(): del myvar") |
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168 %! % Variable defined in local namespace MUST not be available globally |
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169 %! myNS = pyeval ("{}"); |
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170 %! pyexec ("myvar = 1.", myNS) |
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171 %! pyeval ("myvar"); |
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172 |
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173 %!error <NameError> |
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174 %! pyexec ("if 'myvar' in globals(): del myvar") |
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175 %! % Variable defined in one local namespace MUST not be available in another |
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176 %! myNS1 = pyeval ("{}"); |
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177 %! myNS2 = pyeval ("{}"); |
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178 %! pyexec ("myvar = 1.", myNS1) |
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179 %! pyeval ("myvar", myNS2); |
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180 |
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181 %!error <NameError> |
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182 %! pyexec ("if 'sys' in globals(): del sys") |
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183 %! % Modules imported in local namespace MUST not be accessible globally |
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184 %! myNS = pyeval ("{}"); |
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185 %! pyexec ("import sys", myNS); |
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186 %! pyeval ("sys"); |
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187 */ |