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annotate sat/bridge/bridge_constructor/constructors/embedded/constructor.py @ 3540:aa58451b77ba

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tools (utils): new `ensure_deferred` decorator
author Goffi <goffi@goffi.org>
date Thu, 03 Jun 2021 15:21:43 +0200
parents 7550ae9cfbac
children 524856bd7b19
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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ab2696e34d29 Python 3 port:
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1 #!/usr/bin/env python3
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2
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3
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4 # Libervia: an XMPP client
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5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.bridge.bridge_constructor import base_constructor
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21
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22 #  from textwraps import dedent
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23
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24
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25 class EmbeddedConstructor(base_constructor.Constructor):
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26 NAME = "embedded"
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27 CORE_TEMPLATE = "embedded_template.py"
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28 CORE_DEST = "embedded.py"
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29 CORE_FORMATS = {
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30 "methods": """\
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31 def {name}(self, {args}{args_comma}callback=None, errback=None):
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32 {ret_routine}
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33 """,
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34 "signals": """\
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35 def {name}(self, {args}):
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36 try:
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37 cb = self._signals_cbs["{category}"]["{name}"]
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38 except KeyError:
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39 log.warning(u"ignoring signal {name}: no callback registered")
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40 else:
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41 cb({args_result})
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42 """,
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43 }
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44 FRONTEND_TEMPLATE = "embedded_frontend_template.py"
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45 FRONTEND_DEST = CORE_DEST
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46 FRONTEND_FORMATS = {}
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47
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48 def core_completion_method(self, completion, function, default, arg_doc, async_):
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49 completion.update(
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50 {
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51 "debug": ""
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52 if not self.args.debug
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53 else 'log.debug ("%s")\n%s' % (completion["name"], 8 * " "),
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54 "args_result": self.getArguments(function["sig_in"], name=arg_doc),
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55 "args_comma": ", " if function["sig_in"] else "",
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56 }
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57 )
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58
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59 if async_:
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60 completion["cb_or_lambda"] = (
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61 "callback" if function["sig_out"] else "lambda __: callback()"
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62 )
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63 completion[
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64 "ret_routine"
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65 ] = """\
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66 d = self._methods_cbs["{name}"]({args_result})
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67 if callback is not None:
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68 d.addCallback({cb_or_lambda})
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69 if errback is None:
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70 d.addErrback(lambda failure_: log.error(failure_))
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71 else:
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72 d.addErrback(errback)
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73 return d
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74 """.format(
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75 **completion
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76 )
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77 else:
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78 completion["ret_or_nothing"] = "ret" if function["sig_out"] else ""
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79 completion[
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80 "ret_routine"
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81 ] = """\
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82 try:
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83 ret = self._methods_cbs["{name}"]({args_result})
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84 except Exception as e:
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85 if errback is not None:
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86 errback(e)
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87 else:
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88 raise e
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89 else:
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90 if callback is None:
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91 return ret
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92 else:
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93 callback({ret_or_nothing})""".format(
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94 **completion
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95 )
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96
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97 def core_completion_signal(self, completion, function, default, arg_doc, async_):
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98 completion.update(
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99 {"args_result": self.getArguments(function["sig_in"], name=arg_doc)}
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100 )