Mercurial > hg > ltpda

annotate m-toolbox/classes/+utils/@helper/callerIsMethod.m @ 17:7afc99ec5f04 database-connection-manager

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Update ao_model_retrieve_in_timespan
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
parents f0afece42f48
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % CALLERISMETHOD(varargin) checks if a method was called by another LTPDA method.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: CALLERISMETHOD(varargin) checks if the method it is inserted in,
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5 % was called by another LTPDA method
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6 %
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7 % CALL: callerIsMethod = utils.helper.callerIsMethod()
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8 % [callerIsMethod, className] = utils.helper.callerIsMethod()
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9 % [callerIsMethod, className, methodName] = utils.helper.callerIsMethod()
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10 %
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11 % The name of the caller function is retrieved from a call to dbstack
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12 %
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13 % The name of the higher level caller function, if any is tested against the structure
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14 % /../../classes/@class_name/method_name.m
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15 %
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16 % If the higher level caller is found to be a method of LTPDA classes, out is TRUE
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17 % If the caller is found not to be a method of LTPDA classes, out is FALSE
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18 %
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19 % Optional outputs:
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20 % className the name of the class the caller methods is associated
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21 % methodName the name of the caller method is associated
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22 %
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23 % HISTORY: 09-02-11 M Hueller
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24 % Creation
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25 %
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26 % VERSION: $Id: callerIsMethod.m,v 1.16 2011/04/09 06:58:47 hewitson Exp $
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27 %
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28 %
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29 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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30
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31 function varargout = callerIsMethod(varargin)
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32
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33 % This is just some thinking about make a scheme that can override the
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34 % behaviour of callerIsMethod. The idea is to create a variable called
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35 % 'callerIsMethod' in the calling function and pass it in here. We would
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36 % have to pass varargin and inputnames down the chain always. It almost
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37 % works but will be too much work for the moment.
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38 % if nargin == 2
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39 %
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40 % inputs = varargin{1};
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41 % names = varargin{2};
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42 %
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43 % idx = strcmpi('callerIsMethod', names);
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44 % if any(idx)
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45 % varargout{1} = inputs{idx};
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46 % return
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47 % end
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48 % end
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49
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50 persistent exceptions;
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51
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52 if isempty(exceptions)
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53 exceptions = {'compute', 'rebuild', 'collect_values', 'generic_getInfo', 'executeCommands'};
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54 end
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55
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56 stack = dbstack('-completenames');
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57 index = 2;
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58
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59 if size (stack, 1) < index
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60 error('### This utility can only be used inside other functions!');
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61 end
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62
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63 if size (stack, 1) == index
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64
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65 % This is the highest level function call.
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66 % The caller is not a method
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67 callerIsMethod = false;
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68 className = [];
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69 methodName = [];
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70
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71 else
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72 % This is not the highest level function call.
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73
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74 % Serching for class methods assuming the folder/files structure is:
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75 % /../../classes/@class_name/method_name.m
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76
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77 % In the case that we are inside a nested function, we need to climb up
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78 % until we get out of the calling file.
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79 firstFile = stack(index).file;
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80 firstName = stack(index).name;
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81
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82 while index < length(stack) && strcmp(firstFile, stack(index).file) && ~strcmp(firstName, stack(index+1).name)
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83 index = index+1;
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84 end
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85
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86 % capture method name
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87 methodName = stack(index).name;
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88
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89 if index == length(stack) && length(stack)>3
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90 callerIsMethod = false;
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91 className = '';
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92 else
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93 % filesep is quite slow, so we cache the value and use it three times.
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94 % The \ character is also a command in regexp, so we need to go for a trick
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95 if strncmp(computer, 'PC', 2)
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96 fs = '\\';
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97 else
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98 fs = '/';
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99 end
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100
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101 % capture class name
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102 tokenStr = regexp(stack(index).file, ['.*' fs '@(\w+)' fs '\w+.m$'], 'tokens');
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103
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104 % *********
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105 % At the moment this bit of code is a bad thing because models which
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106 % create objects in their default plists (AOs for example) can't be
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107 % rebuilt because the objects have no history. An example of this is
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108 % smodel_model_psd_feeps.
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109 % *********
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110
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111 % % If we are being called deep inside a built-in model constructor,
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112 % % then the stack will contain fromModel and we are called from a
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113 % % method.
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114 % if utils.helper.ismember('fromModel', {stack(:).name})
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115 % callerIsMethod = true;
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116 % className = 'ltpda_uo';
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117 % methodName = 'fromModel';
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118 %
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119 % % If the method is a unit test (test_*) then we add history
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120 % else
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121
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122
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123 if strncmp(methodName, 'test_', 5)
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124 callerIsMethod = false;
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125 if ~isempty(tokenStr)
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126 className = tokenStr{1}{1};
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127 end
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128
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129 % if we get a match and if the caller is not in the exception list
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130 % then we were called by a method.
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131 elseif ~isempty(tokenStr) && ~any(strcmp(stack(index).name, exceptions))
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132 callerIsMethod = true;
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133 className = tokenStr{1}{1};
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134 else
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135 callerIsMethod = false;
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136 className = '';
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137 end
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138 end
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139
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140 end
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141
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142 % Assigning outputs
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143 switch nargout
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144 case 0
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145 case 1
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146 varargout{1} = callerIsMethod;
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147 case 2
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148 varargout{1} = callerIsMethod;
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149 varargout{2} = className;
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150 case 3
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151 varargout{1} = callerIsMethod;
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152 varargout{2} = className;
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153 varargout{3} = methodName;
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154 otherwise
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155 error('### Incorrect number of outputs');
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156 end
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157 end