1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | |
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15 | package de.ugoe.cs.autoquest.tasktrees; |
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16 | |
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17 | import java.util.HashMap; |
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18 | import java.util.Map; |
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19 | import java.util.regex.Matcher; |
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20 | import java.util.regex.Pattern; |
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21 | |
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22 | import de.ugoe.cs.autoquest.eventcore.IEventTarget; |
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23 | import de.ugoe.cs.autoquest.eventcore.StringEventType; |
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24 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIteration; |
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25 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IOptional; |
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26 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelection; |
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27 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequence; |
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28 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeBuilder; |
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29 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNode; |
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30 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTreeNodeFactory; |
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31 | import de.ugoe.cs.autoquest.test.DummyGUIElement; |
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32 | |
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33 | /** |
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34 | * TODO comment |
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35 | * |
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36 | * @version $Revision: $ $Date: 01.04.2012$ |
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37 | * @author 2012, last modified by $Author: patrick$ |
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38 | */ |
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39 | public class TaskTreeInstantiator { |
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40 | |
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41 | /** */ |
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42 | private static Pattern taskPattern = Pattern.compile("([^{}]+)\\{|\\}"); |
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43 | |
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44 | /** */ |
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45 | private static Pattern taskDetailsPattern = |
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46 | Pattern.compile("\\s*(\\w*)\\s*([\\w\\(\\)\"]*)\\s*((\\w*)|(\".*\"))?"); |
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47 | |
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48 | /** */ |
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49 | private ITaskTreeNodeFactory taskTreeNodeFactory; |
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50 | |
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51 | /** */ |
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52 | private ITaskTreeBuilder taskTreeBuilder; |
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53 | |
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54 | /** */ |
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55 | Map<String, IEventTarget> targets = new HashMap<String, IEventTarget>(); |
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56 | |
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57 | /** |
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58 | * |
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59 | */ |
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60 | public TaskTreeInstantiator(ITaskTreeNodeFactory taskTreeNodeFactory, |
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61 | ITaskTreeBuilder taskTreeBuilder) |
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62 | { |
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63 | super(); |
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64 | this.taskTreeNodeFactory = taskTreeNodeFactory; |
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65 | this.taskTreeBuilder = taskTreeBuilder; |
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66 | } |
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67 | |
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68 | /** |
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69 | * |
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70 | */ |
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71 | public ITaskTreeNode instantiateTaskTree(String taskTreeSpec) { |
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72 | ITaskTreeNode task = null; |
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73 | |
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74 | Matcher taskMatcher = taskPattern.matcher(taskTreeSpec); |
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75 | |
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76 | if (taskMatcher.find()) { |
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77 | task = parseTask(taskMatcher); |
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78 | } |
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79 | |
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80 | if (taskMatcher.find()) { |
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81 | throw new IllegalArgumentException("too many tasks specified"); |
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82 | } |
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83 | |
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84 | return task; |
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85 | } |
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86 | |
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87 | /** |
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88 | * |
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89 | */ |
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90 | private ITaskTreeNode parseTask(Matcher taskMatcher) { |
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91 | if ("}".equals(taskMatcher.group(1))) { |
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92 | throw new IllegalArgumentException("invalid task specification"); |
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93 | } |
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94 | |
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95 | String taskDetails = taskMatcher.group(1); |
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96 | |
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97 | Matcher matcher = taskDetailsPattern.matcher(taskDetails); |
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98 | |
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99 | if (!matcher.find()) { |
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100 | throw new IllegalArgumentException("could not parse task details"); |
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101 | } |
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102 | |
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103 | ITaskTreeNode task; |
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104 | |
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105 | String type = matcher.group(1); |
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106 | |
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107 | String targetId = matcher.group(2); |
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108 | if ((matcher.group(4) != null) && (!"".equals(matcher.group(4).trim()))) { |
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109 | targetId += matcher.group(4).trim(); |
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110 | } |
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111 | |
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112 | IEventTarget target = targets.get(targetId); |
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113 | |
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114 | if (target == null) { |
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115 | target = new DummyGUIElement(targetId); |
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116 | targets.put(targetId, target); |
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117 | } |
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118 | |
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119 | if ("Sequence".equals(type)) { |
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120 | task = taskTreeNodeFactory.createNewSequence(); |
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121 | } |
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122 | else if ("Selection".equals(type)) { |
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123 | task = taskTreeNodeFactory.createNewSelection(); |
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124 | } |
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125 | else if ("Iteration".equals(type)) { |
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126 | task = taskTreeNodeFactory.createNewIteration(); |
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127 | } |
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128 | else if ("Optional".equals(type)) { |
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129 | task = taskTreeNodeFactory.createNewOptional(); |
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130 | } |
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131 | else { |
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132 | task = taskTreeNodeFactory.createNewEventTask(new StringEventType(type), target); |
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133 | } |
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134 | |
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135 | if ((matcher.group(5) != null) && (!"".equals(matcher.group(5).trim()))) { |
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136 | taskTreeBuilder.setDescription(task, matcher.group(5).trim()); |
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137 | } |
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138 | |
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139 | while (taskMatcher.find() && !"}".equals(taskMatcher.group(0))) { |
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140 | if (task instanceof ISequence) { |
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141 | taskTreeBuilder.addChild((ISequence) task, parseTask(taskMatcher)); |
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142 | } |
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143 | else if (task instanceof ISelection) { |
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144 | taskTreeBuilder.addChild((ISelection) task, parseTask(taskMatcher)); |
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145 | } |
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146 | else if (task instanceof IIteration) { |
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147 | if ((task.getChildren() == null) || (task.getChildren().size() == 0)) { |
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148 | taskTreeBuilder.setChild((IIteration) task, parseTask(taskMatcher)); |
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149 | } |
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150 | else { |
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151 | throw new IllegalArgumentException |
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152 | ("can not add more than one child to an iteration"); |
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153 | } |
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154 | } |
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155 | else if (task instanceof IOptional) { |
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156 | if ((task.getChildren() == null) || (task.getChildren().size() == 0)) { |
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157 | taskTreeBuilder.setChild((IOptional) task, parseTask(taskMatcher)); |
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158 | } |
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159 | else { |
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160 | throw new IllegalArgumentException |
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161 | ("can not add more than one child to an optional"); |
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162 | } |
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163 | } |
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164 | else { |
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165 | throw new IllegalArgumentException("can not add children to something that is no " + |
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166 | "sequence, selection, or iteration"); |
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167 | } |
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168 | } |
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169 | |
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170 | return task; |
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171 | } |
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172 | |
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173 | } |
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