annotate src/bridge/bridge_constructor/base_constructor.py @ 2085:da4097de5a95

bridge (constructor): refactoring: - constructors are now in separate modules - constructors are discovered dynamically - factorised generation code from D-Bus in base Constructor. - A generic generation method is now available in base Constructor, using python formatting. - removed bridge/bridge.py in core as it was useless, may come back in the future if needed
author Goffi <goffi@goffi.org>
date Sun, 02 Oct 2016 22:44:33 +0200 (2016-10-02)
parents
children 159250d66407
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rev   line source
2085
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1 #!/usr/bin/env python2
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2 #-*- coding: utf-8 -*-
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3
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4 # SàT: a XMPP client
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5 # Copyright (C) 2009-2016 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 """base constructor class"""
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21
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22 from sat.bridge.bridge_constructor.constants import Const as C
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23 from ConfigParser import NoOptionError
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24 import sys
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25 import os
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26 import os.path
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27 import re
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28 from importlib import import_module
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29
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30
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31 class ParseError(Exception):
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32 #Used when the signature parsing is going wrong (invalid signature ?)
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33 pass
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34
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35
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36 class Constructor(object):
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37 NAME = None # used in arguments parsing, filename will be used if not set
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38 # following attribute are used by default generation method
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39 # they can be set to dict of strings using python formatting syntax
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40 # dict keys will be used to select part to replace (e.g. "signals" key will
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41 # replace ##SIGNALS_PART## in template), while the value is the format
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42 # keys starting with "signal" will be used for signals, while ones starting with
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43 # "method" will be used for methods
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44 # check D-Bus constructor for an example
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45 CORE_FORMATS = None
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46 CORE_TEMPLATE = None
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47 CORE_DEST = None
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48 FRONTEND_FORMATS = None
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49 FRONTEND_TEMPLATE = None
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50 FRONTEND_DEST = None
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51
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52 def __init__(self, bridge_template, options):
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53 self.bridge_template = bridge_template
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54 self.args = options
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55
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56 @property
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57 def constructor_dir(self):
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58 constructor_mod = import_module(self.__module__)
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59 return os.path.dirname(constructor_mod.__file__)
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60
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61 def getValues(self, name):
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62 """Return values of a function in a dict
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63 @param name: Name of the function to get
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64 @return: dict, each key has the config value or None if the value is not set"""
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65 function = {}
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66 for option in ['type', 'category', 'sig_in', 'sig_out', 'doc']:
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67 try:
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68 value = self.bridge_template.get(name, option)
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69 except NoOptionError:
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70 value = None
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71 function[option] = value
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72 return function
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73
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74 def getDefault(self, name):
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75 """Return default values of a function in a dict
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76 @param name: Name of the function to get
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77 @return: dict, each key is the integer param number (no key if no default value)"""
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78 default_dict = {}
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79 def_re = re.compile(r"param_(\d+)_default")
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80
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81 for option in self.bridge_template.options(name):
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82 match = def_re.match(option)
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83 if match:
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84 try:
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85 idx = int(match.group(1))
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86 except ValueError:
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87 raise ParseError("Invalid value [%s] for parameter number" % match.group(1))
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88 default_dict[idx] = self.bridge_template.get(name, option)
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89
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90 return default_dict
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91
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92 def getFlags(self, name):
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93 """Return list of flags set for this function
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94
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95 @param name: Name of the function to get
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96 @return: List of flags (string)
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97 """
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98 flags = []
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99 for option in self.bridge_template.options(name):
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100 if option in C.DECLARATION_FLAGS:
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101 flags.append(option)
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102 return flags
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103
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104 def getArgumentsDoc(self, name):
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105 """Return documentation of arguments
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106 @param name: Name of the function to get
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107 @return: dict, each key is the integer param number (no key if no argument doc), value is a tuple (name, doc)"""
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108 doc_dict = {}
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109 option_re = re.compile(r"doc_param_(\d+)")
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110 value_re = re.compile(r"^(\w+): (.*)$", re.MULTILINE | re.DOTALL)
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111 for option in self.bridge_template.options(name):
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112 if option == 'doc_return':
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113 doc_dict['return'] = self.bridge_template.get(name, option)
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114 continue
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115 match = option_re.match(option)
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116 if match:
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117 try:
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118 idx = int(match.group(1))
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119 except ValueError:
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120 raise ParseError("Invalid value [%s] for parameter number" % match.group(1))
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121 value_match = value_re.match(self.bridge_template.get(name, option))
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122 if not value_match:
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123 raise ParseError("Invalid value for parameter doc [%i]" % idx)
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124 doc_dict[idx] = (value_match.group(1), value_match.group(2))
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125 return doc_dict
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126
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127 def getDoc(self, name):
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128 """Return documentation of the method
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129 @param name: Name of the function to get
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130 @return: string documentation, or None"""
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131 if self.bridge_template.has_option(name, "doc"):
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132 return self.bridge_template.get(name, "doc")
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133 return None
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134
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135 def argumentsParser(self, signature):
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136 """Generator which return individual arguments signatures from a global signature"""
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137 start = 0
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138 i = 0
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139
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140 while i < len(signature):
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141 if signature[i] not in ['b', 'y', 'n', 'i', 'x', 'q', 'u', 't', 'd', 's', 'a']:
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142 raise ParseError("Unmanaged attribute type [%c]" % signature[i])
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143
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144 if signature[i] == 'a':
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145 i += 1
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146 if signature[i] != '{' and signature[i] != '(': # FIXME: must manage tuples out of arrays
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147 i += 1
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148 yield signature[start:i]
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149 start = i
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
150 continue # we have a simple type for the array
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
151 opening_car = signature[i]
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
152 assert(opening_car in ['{', '('])
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
153 closing_car = '}' if opening_car == '{' else ')'
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
154 opening_count = 1
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
155 while (True): # we have a dict or a list of tuples
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
156 i += 1
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
157 if i >= len(signature):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
158 raise ParseError("missing }")
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
159 if signature[i] == opening_car:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
160 opening_count += 1
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
161 if signature[i] == closing_car:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
162 opening_count -= 1
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
163 if opening_count == 0:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
164 break
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
165 i += 1
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
166 yield signature[start:i]
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
167 start = i
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
168
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
169 def getArguments(self, signature, name=None, default=None, unicode_protect=False):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
170 """Return arguments to user given a signature
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
171
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
172 @param signature: signature in the short form (using s,a,i,b etc)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
173 @param name: dictionary of arguments name like given by getArguments
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
174 @param default: dictionary of default values, like given by getDefault
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
175 @param unicode_protect: activate unicode protection on strings (return strings as unicode(str))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
176 @return: list of arguments that correspond to a signature (e.g.: "sss" return "arg1, arg2, arg3")
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
177 """
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
178 idx = 0
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
179 attr_string = []
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
180
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
181 for arg in self.argumentsParser(signature):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
182 attr_string.append(("unicode(%(name)s)%(default)s" if (unicode_protect and arg == 's') else "%(name)s%(default)s") % {
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
183 'name': name[idx][0] if (name and idx in name) else "arg_%i" % idx,
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
184 'default': "=" + default[idx] if (default and idx in default) else ''})
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
185 # give arg_1, arg2, etc or name1, name2=default, etc.
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
186 #give unicode(arg_1), unicode(arg_2), etc. if unicode_protect is set and arg is a string
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
187 idx += 1
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
188
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
189 return ", ".join(attr_string)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
190
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
191 def getTemplatePath(self, template_file):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
192 """return template path corresponding to file name
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
193
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
194 @param template_file(str): name of template file
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
195 """
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
196 return os.path.join(self.constructor_dir, template_file)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
197
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
198 def core_completion_method(self, completion, function, default, arg_doc, async_):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
199 """override this method to extend completion"""
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
200 pass
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
201
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
202 def core_completion_signal(self, completion, function, default, arg_doc, async_):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
203 """override this method to extend completion"""
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
204 pass
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
205
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
206 def frontend_completion_method(self, completion, function, default, arg_doc, async_):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
207 """override this method to extend completion"""
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
208 pass
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
209
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
210 def frontend_completion_signal(self, completion, function, default, arg_doc, async_):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
211 """override this method to extend completion"""
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
212 pass
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
213
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
214
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
215 def generate(self, side):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
216 """generate bridge
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
217
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
218 call generateCoreSide or generateFrontendSide if they exists
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
219 else call generic self._generate method
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
220 """
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
221 try:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
222 if side == "core":
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
223 method = self.generateCoreSide
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
224 elif side == "frontend":
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
225 method = self.generateFrontendSide
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
226 except AttributeError:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
227 self._generate(side)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
228 else:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
229 method()
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
230
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
231 def _generate(self, side):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
232 """generate the backend
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
233
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
234 this is a generic method which will use formats found in self.CORE_SIGNAL_FORMAT
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
235 and self.CORE_METHOD_FORMAT (standard format method will be used)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
236 @param side(str): core or frontend
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
237 """
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
238 side_vars = []
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
239 for var in ('FORMATS', 'TEMPLATE', 'DEST'):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
240 attr = "{}_{}".format(side.upper(), var)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
241 value = getattr(self, attr)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
242 if value is None:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
243 raise NotImplementedError
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
244 side_vars.append(value)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
245
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
246 FORMATS, TEMPLATE, DEST = side_vars
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
247 del side_vars
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
248
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
249 parts = {part.upper():[] for part in FORMATS}
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
250 sections = self.bridge_template.sections()
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
251 sections.sort()
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
252 for section in sections:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
253 function = self.getValues(section)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
254 print ("Adding %s %s" % (section, function["type"]))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
255 default = self.getDefault(section)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
256 arg_doc = self.getArgumentsDoc(section)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
257 async_ = "async" in self.getFlags(section)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
258 completion = {
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
259 'sig_in': function['sig_in'] or '',
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
260 'sig_out': function['sig_out'] or '',
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
261 'category': 'plugin' if function['category'] == 'plugin' else 'core',
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
262 'name': section,
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
263 'args': self.getArguments(function['sig_in'], name=arg_doc, default=default)}
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
264
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
265 extend_method = getattr(self, "{}_completion_{}".format(side, function["type"]))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
266 extend_method(completion, function, default, arg_doc, async_)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
267
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
268 for part, fmt in FORMATS.iteritems():
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
269 if part.startswith(function["type"]):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
270 parts[part.upper()].append(fmt.format(**completion))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
271
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
272
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
273 #at this point, signals_part, methods_part and direct_calls should be filled,
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
274 #we just have to place them in the right part of the template
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
275 bridge = []
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
276 const_override = {env[len(C.ENV_OVERRIDE):]:v for env,v in os.environ.iteritems() if env.startswith(C.ENV_OVERRIDE)}
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
277 template_path = self.getTemplatePath(TEMPLATE)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
278 try:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
279 with open(template_path) as template:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
280 for line in template:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
281
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
282 for part, extend_list in parts.iteritems():
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
283 if line.startswith('##{}_PART##'.format(part)):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
284 bridge.extend(extend_list)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
285 break
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
286 else:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
287 # the line is not a magic part replacement
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
288 if line.startswith('const_'):
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
289 const_name = line[len('const_'):line.find(' = ')].strip()
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
290 if const_name in const_override:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
291 print("const {} overriden".format(const_name))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
292 bridge.append('const_{} = {}'.format(const_name, const_override[const_name]))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
293 continue
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
294 bridge.append(line.replace('\n', ''))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
295 except IOError:
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
296 print ("can't open template file [{}]".format(template_path))
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
297 sys.exit(1)
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
298
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
299 #now we write to final file
da4097de5a95 bridge (constructor): refactoring:
Goffi <goffi@goffi.org>
parents:
diff changeset
300 self.finalWrite(DEST, bridge)
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301
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302 def finalWrite(self, filename, file_buf):
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303 """Write the final generated file in [dest dir]/filename
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304
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305 @param filename: name of the file to generate
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306 @param file_buf: list of lines (stings) of the file
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307 """
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308 if os.path.exists(self.args.dest_dir) and not os.path.isdir(self.args.dest_dir):
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309 print ("The destination dir [%s] can't be created: a file with this name already exists !")
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310 sys.exit(1)
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311 try:
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312 if not os.path.exists(self.args.dest_dir):
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313 os.mkdir(self.args.dest_dir)
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314 full_path = os.path.join(self.args.dest_dir, filename)
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315 if os.path.exists(full_path) and not self.args.force:
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316 print ("The destination file [%s] already exists ! Use --force to overwrite it" % full_path)
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317 try:
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318 with open(full_path, 'w') as dest_file:
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319 dest_file.write('\n'.join(file_buf))
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320 except IOError:
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321 print ("Can't open destination file [%s]" % full_path)
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322 except OSError:
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323 print("It's not possible to generate the file, check your permissions")
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324 exit(1)