1 | package de.ugoe.cs.swe.bnftools.ui.actions;
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2 |
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3 | import java.io.ByteArrayInputStream;
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4 | import java.io.InputStream;
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5 | import org.eclipse.core.resources.IFile;
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6 | import org.eclipse.core.resources.IResource;
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7 | import org.eclipse.core.resources.ResourcesPlugin;
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8 | import org.eclipse.core.runtime.CoreException;
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9 | import org.eclipse.core.runtime.IPath;
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10 | import org.eclipse.core.runtime.Path;
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11 | import org.eclipse.emf.common.util.EList;
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12 | import org.eclipse.emf.common.util.URI;
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13 | import org.eclipse.emf.ecore.EObject;
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14 | import org.eclipse.emf.ecore.resource.Resource;
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15 | import org.eclipse.jface.action.IAction;
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16 | import org.eclipse.jface.dialogs.InputDialog;
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17 | import org.eclipse.jface.viewers.ISelection;
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18 | import org.eclipse.jface.viewers.IStructuredSelection;
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19 | import org.eclipse.jface.viewers.StructuredSelection;
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20 | import org.eclipse.jface.viewers.TreePath;
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21 | import org.eclipse.jface.viewers.TreeSelection;
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22 | import org.eclipse.ui.PlatformUI;
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23 | import org.eclipse.ui.actions.ActionDelegate;
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24 | import org.eclipse.xtext.parsetree.AbstractNode;
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25 | import org.eclipse.xtext.parsetree.CompositeNode;
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26 | import org.eclipse.xtext.parsetree.LeafNode;
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27 | import org.eclipse.xtext.parsetree.NodeUtil;
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28 | import org.eclipse.xtext.resource.XtextResource;
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29 | import org.eclipse.xtext.resource.XtextResourceSet;
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30 |
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31 | import de.ugoe.cs.swe.bnftools.ebnf.ExtRule;
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32 | import de.ugoe.cs.swe.bnftools.ebnf.Import;
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33 | import de.ugoe.cs.swe.bnftools.ebnf.Rule;
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34 | import de.ugoe.cs.swe.bnftools.ebnf.RuleReference;
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35 | import de.ugoe.cs.swe.bnftools.ebnf.impl.EtsiBnfImpl;
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36 |
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37 | public class PackageConsistencyCheckerAction extends ActionDelegate {
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38 | private IStructuredSelection selection = StructuredSelection.EMPTY;
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39 | private IFile file=null;
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40 | private XtextResource coreResource = null;
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41 | private XtextResource updatedResource = null;
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42 |
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43 | @Override
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44 | public void run(IAction action) {
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45 | TreeSelection treeSelection = (TreeSelection) selection;
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46 | TreePath[] paths = treeSelection.getPaths();
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47 |
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48 | for (int i = 0; i < paths.length; i++) {
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49 | TreePath path = paths[i];
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50 | IFile f = (IFile) path.getLastSegment();
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51 | XtextResourceSet set = new XtextResourceSet();
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52 | String fp = f.getFullPath().toString();
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53 | URI uri = URI.createPlatformResourceURI(fp,true);
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54 |
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55 | Resource resource = set.getResource(uri, true);
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56 | if (resource instanceof XtextResource) {
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57 |
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58 | XtextResource xtextResource = (XtextResource) resource;
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59 | CompositeNode compNode = xtextResource.getParseResult().getRootNode();
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60 | Iterable<AbstractNode> allNodes = NodeUtil.getAllContents(compNode);
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61 |
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62 | if(!((EtsiBnfImpl) xtextResource.getParseResult().getRootNode().getElement()).getType().equals("/delta"))
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63 | continue;
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64 |
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65 | Resource coreRes = null;
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66 | Resource updatedRes = null;
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67 | EList<Import> imports = ((EtsiBnfImpl) xtextResource.getParseResult().getRootNode().getElement()).getImportSection().getImports();
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68 |
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69 | for(int j=0; j<imports.size(); j++) {
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70 | if(imports.get(j).getGrammarType().equals("core")) {
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71 | String packageUri = uri.trimSegments(1).toPlatformString(true);
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72 | String fullUri = packageUri + "/" +imports.get(j).getImportURI();
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73 | coreRes= set.getResource( URI.createPlatformResourceURI(fullUri, true), true);
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74 | }
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75 | if(imports.get(j).getGrammarType().equals("update")) {
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76 | String packageUri = uri.trimSegments(1).toPlatformString(true);
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77 | String fullUri = packageUri + "/" +imports.get(j).getImportURI();
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78 | updatedRes= set.getResource( URI.createPlatformResourceURI(fullUri, true), true);
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79 | }
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80 |
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81 |
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82 | }
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83 | if( (coreRes==null) || (updatedRes==null))
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84 | return;
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85 |
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86 | if(coreRes instanceof XtextResource)
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87 | coreResource = (XtextResource) coreRes;
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88 | if(updatedRes instanceof XtextResource)
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89 | updatedResource = (XtextResource) updatedRes;
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90 |
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91 | InputDialog di = new InputDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), "Name Selection",
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92 | "Please type a name for the consistency check file.", uri.trimFileExtension().segment(uri.segmentCount()-1) + "_cons.txt", null);
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93 | di.open();
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94 | String fname = di.getValue();
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95 |
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96 | String loc = uri.trimSegments(1).toPlatformString(true); //uri.trimFileExtension().trimSegments(1).toPlatformString(true);
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97 | loc = loc.concat("/" + fname);
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98 | IPath filePath = new Path(loc);
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99 | file = ResourcesPlugin.getWorkspace().getRoot().getFile(filePath);
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100 |
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101 | try {
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102 | if (!file.exists()) {
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103 | byte[] bytes = ("Consistency check for: " + uri.trimFileExtension().segment(uri.segmentCount()-1) + '\n').getBytes();
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104 | InputStream source = new ByteArrayInputStream(bytes);
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105 | file.create(source, IResource.NONE, null);
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106 | }
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107 | else return;
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108 | } catch (CoreException e) {
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109 | e.printStackTrace();
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110 | }
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111 | createNewLine("The only rules shown are the ones that were found inconsistent between the two versions." + '\n');
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112 |
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113 | /*
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114 | * the idea: get the core grammar and the updated grammar
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115 | * for each extension rule in the delta grammar,
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116 | * find the corresponding rule in the updated grammar and the core grammar
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117 | * if it doesn't exist in the updated grammar write the inconsistency
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118 | * if it exists, compare to the rule in the core grammar
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119 | */
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120 | for(AbstractNode node: allNodes) {
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121 | if(node.getElement() instanceof ExtRule) {
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122 | if(!checkForConsistency(node))
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123 | createNewLine("Extension Rule: " + node.serialize().trim()+'\n' + '\n');
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124 |
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125 | }
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126 |
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127 | }
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128 |
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129 |
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130 |
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131 |
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132 | }
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133 | }
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134 | }
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135 |
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136 | private boolean checkForConsistency(AbstractNode node) {
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137 | //updated grammar:
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138 | AbstractNode updatedRule = null;
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139 | AbstractNode coreRule = null;
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140 | for(AbstractNode uNode : NodeUtil.getAllContents(updatedResource.getParseResult().getRootNode())) {
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141 | if(uNode.getElement() instanceof Rule)
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142 | if(((Rule) uNode.getElement()).getName().equals(((ExtRule) node.getElement()).getName())) {
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143 | updatedRule = uNode;
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144 | break;
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145 | }
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146 | }
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147 |
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148 | if(updatedRule == null){
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149 | createNewLine("The following core grammar rule used in the package does not exist in the updated grammar: \n");
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150 | return false;
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151 | }
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152 |
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153 | //core grammar:
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154 | else {
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155 | for(AbstractNode cNode : NodeUtil.getAllContents(coreResource.getParseResult().getRootNode())) {
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156 | if(cNode.getElement() instanceof Rule)
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157 | if(((Rule) cNode.getElement()).getName().equals(((ExtRule) node.getElement()).getName())) {
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158 | coreRule = cNode;
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159 | break;
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160 | }
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161 | }
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162 |
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163 | if(coreRule == null){
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164 | createNewLine("Error at the following rule: (no corresponding rule found in the core grammar!):" + '\n');
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165 | return false;
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166 | }
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167 |
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168 | if(compareRules(coreRule, updatedRule))
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169 | return true;
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170 | else {
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171 | createNewLine("Inconsistency found at the following rule:" + '\n');
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172 | createNewLine("Core Rule: ");
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173 | createNewLine(coreRule.serialize().trim()+ '\n');
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174 | createNewLine("Updated Rule: ");
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175 | createNewLine(updatedRule.serialize().trim() + '\n');
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176 |
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177 | return false;
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178 | }
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179 |
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180 | }
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181 | }
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182 |
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183 |
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184 | //returns true, if the rules are equal
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185 | private boolean compareRules(AbstractNode cNode, AbstractNode uNode) {
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186 | EList<LeafNode> cLeaves = removeWS(cNode.getLeafNodes());
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187 | EList<LeafNode> uLeaves = removeWS(uNode.getLeafNodes());
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188 | if(cLeaves.size()!=uLeaves.size())
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189 | return false;
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190 |
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191 | for(int i=0; i< cLeaves.size(); i++) {
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192 | if(!(cLeaves.get(i).serialize().equals(uLeaves.get(i).serialize())))
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193 | return false;
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194 | }
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195 | return true;
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196 | }
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197 |
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198 |
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199 | private EList<LeafNode> removeWS(EList<LeafNode> leaves) {
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200 | for(int i=0; i<leaves.size(); i++) {
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201 | if(!(leaves.get(i).getGrammarElement() instanceof org.eclipse.xtext.impl.TerminalRuleImpl))
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202 | leaves.remove(i);
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203 | }
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204 | return leaves;
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205 | }
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206 |
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207 | private boolean checkReferences(AbstractNode rule){
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208 | EList<EObject> refs = rule.getElement().eContents();
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209 | for(int i=0; i<refs.size(); i++){
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210 | if(refs.get(i) instanceof RuleReference)
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211 | System.out.println(refs.get(i));
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212 | }
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213 | // EList<LeafNode> references = ruleref(removeWS(rule.getLeafNodes()));
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214 | // for(int i=0; i<references.size(); i++)
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215 | // if(references.get(i).getElement() instanceof RuleReference)
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216 | // System.out.println(references.get(i));
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217 |
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218 | return false;
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219 | }
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220 |
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221 |
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222 |
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223 | private void createNewLine(String rule) {
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224 | try {
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225 | if (file.exists()) {
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226 | byte[] bytes = (rule).getBytes();
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227 | InputStream source = new ByteArrayInputStream(bytes);
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228 | file.appendContents(source, IResource.NONE, null);
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229 | }
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230 | } catch (CoreException e) {
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231 | e.printStackTrace();
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232 | }
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233 | }
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234 | @Override
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235 | public void selectionChanged(IAction action, ISelection selection) {
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236 | if (selection instanceof IStructuredSelection) {
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237 | this.selection = (IStructuredSelection) selection;
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238 | } else {
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239 | this.selection = StructuredSelection.EMPTY;
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240 | }
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241 | }
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242 |
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243 | }
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