[5] | 1 | package de.ugoe.cs.swe.bnftools.ui.actions;
|
---|
| 2 |
|
---|
| 3 | import java.io.ByteArrayInputStream;
|
---|
| 4 | import java.io.InputStream;
|
---|
| 5 | import java.util.LinkedList;
|
---|
| 6 |
|
---|
| 7 | import org.eclipse.core.internal.resources.File;
|
---|
| 8 | import org.eclipse.core.resources.IFile;
|
---|
| 9 | import org.eclipse.core.resources.IResource;
|
---|
| 10 | import org.eclipse.core.resources.ResourcesPlugin;
|
---|
| 11 | import org.eclipse.core.runtime.CoreException;
|
---|
| 12 | import org.eclipse.core.runtime.IPath;
|
---|
| 13 | import org.eclipse.core.runtime.Path;
|
---|
| 14 | import org.eclipse.emf.common.util.EList;
|
---|
| 15 | import org.eclipse.emf.common.util.URI;
|
---|
| 16 | import org.eclipse.emf.ecore.resource.Resource;
|
---|
| 17 | import org.eclipse.jface.action.IAction;
|
---|
| 18 | import org.eclipse.jface.dialogs.InputDialog;
|
---|
| 19 | import org.eclipse.jface.viewers.ISelection;
|
---|
| 20 | import org.eclipse.jface.viewers.IStructuredSelection;
|
---|
| 21 | import org.eclipse.jface.viewers.StructuredSelection;
|
---|
| 22 | import org.eclipse.jface.viewers.TreePath;
|
---|
| 23 | import org.eclipse.jface.viewers.TreeSelection;
|
---|
| 24 | import org.eclipse.ui.PlatformUI;
|
---|
| 25 | import org.eclipse.ui.actions.ActionDelegate;
|
---|
| 26 | import org.eclipse.ui.dialogs.ResourceSelectionDialog;
|
---|
| 27 | import org.eclipse.xtext.parsetree.AbstractNode;
|
---|
| 28 | import org.eclipse.xtext.parsetree.CompositeNode;
|
---|
| 29 | import org.eclipse.xtext.parsetree.LeafNode;
|
---|
| 30 | import org.eclipse.xtext.parsetree.NodeUtil;
|
---|
| 31 | import org.eclipse.xtext.resource.XtextResource;
|
---|
| 32 | import org.eclipse.xtext.resource.XtextResourceSet;
|
---|
| 33 |
|
---|
| 34 | import de.ugoe.cs.swe.bnftools.ebnf.ExtRule;
|
---|
| 35 | import de.ugoe.cs.swe.bnftools.ebnf.Import;
|
---|
| 36 | import de.ugoe.cs.swe.bnftools.ebnf.Rule;
|
---|
| 37 | import de.ugoe.cs.swe.bnftools.ebnf.impl.EtsiBnfImpl;
|
---|
| 38 |
|
---|
| 39 | @SuppressWarnings("restriction")
|
---|
| 40 | public class GenerateDefaultMergeDSLAction extends ActionDelegate{
|
---|
| 41 |
|
---|
| 42 | private IStructuredSelection selection = StructuredSelection.EMPTY;
|
---|
| 43 | private IFile file=null;
|
---|
| 44 | private LinkedList<CompositeNode> deltas;
|
---|
| 45 | private LinkedList<String> deltaLabels;
|
---|
| 46 |
|
---|
| 47 | @Override
|
---|
| 48 | public void run(IAction action) {
|
---|
| 49 |
|
---|
| 50 | TreeSelection treeSelection = (TreeSelection) selection;
|
---|
| 51 | TreePath[] paths = treeSelection.getPaths();
|
---|
| 52 |
|
---|
| 53 | for (int i = 0; i < paths.length; i++) {
|
---|
| 54 | TreePath path = paths[i];
|
---|
| 55 | IFile f = (IFile) path.getLastSegment();
|
---|
| 56 | XtextResourceSet set = new XtextResourceSet();
|
---|
| 57 |
|
---|
| 58 | String fp = f.getFullPath().toString();
|
---|
| 59 | URI uri = URI.createPlatformResourceURI(fp,true);
|
---|
| 60 |
|
---|
| 61 | Resource resource = set.getResource(uri, true);
|
---|
| 62 | if (resource instanceof XtextResource) {
|
---|
| 63 |
|
---|
| 64 | XtextResource xtextResource = (XtextResource) resource;
|
---|
| 65 |
|
---|
| 66 | //if the selected grammar isn't a BNF grammar, return
|
---|
| 67 | if(!(((EtsiBnfImpl) xtextResource.getParseResult().getRootNode().getElement()).getType()==null||
|
---|
| 68 | ((((EtsiBnfImpl) xtextResource.getParseResult().getRootNode().getElement()).getType().equals("/bnf")))))
|
---|
| 69 | continue;
|
---|
| 70 |
|
---|
| 71 | //create a file to write the new grammar in
|
---|
| 72 | //TODO: add a validator
|
---|
| 73 |
|
---|
| 74 | InputDialog di = new InputDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), "Name Selection",
|
---|
| 75 | "Please type a name for the merge grammar.", uri.trimFileExtension().segment(uri.segmentCount()-1) + "_merge.bnf", null);
|
---|
| 76 | di.open();
|
---|
| 77 |
|
---|
| 78 | if (di.getReturnCode() == InputDialog.CANCEL)
|
---|
| 79 | return;
|
---|
| 80 |
|
---|
| 81 | String fname = di.getValue();
|
---|
| 82 |
|
---|
| 83 | String loc = uri.trimFileExtension().trimSegments(1).toPlatformString(true);
|
---|
| 84 | loc = loc.concat("/" + fname);
|
---|
| 85 | IPath filePath = new Path(loc);
|
---|
| 86 | file = ResourcesPlugin.getWorkspace().getRoot().getFile(filePath);
|
---|
| 87 |
|
---|
| 88 | try {
|
---|
| 89 | if (!file.exists()) {
|
---|
| 90 | byte[] bytes = ("//Automatically generated merge grammar from: " + uri.trimFileExtension().segment(uri.segmentCount()-1) + '\n').getBytes();
|
---|
| 91 | InputStream source = new ByteArrayInputStream(bytes);
|
---|
| 92 | file.create(source, IResource.NONE, null);
|
---|
| 93 | }
|
---|
| 94 | else return;
|
---|
| 95 | } catch (CoreException e) {
|
---|
| 96 | e.printStackTrace();
|
---|
| 97 | }
|
---|
| 98 |
|
---|
| 99 | createNewLine("/merge;" + '\n' + '\n');
|
---|
| 100 | // createNewLine("corebnf: " + '\"' + uri.segment(uri.segmentCount()-1) + '\"'+ ";" + '\n');
|
---|
| 101 | createNewLine("import " + '\"' + uri.segment(uri.segmentCount()-1) + '\"' + " /core label: Core" + ";" + '\n');
|
---|
| 102 |
|
---|
| 103 |
|
---|
| 104 | //create a dialog, asking to select the extensions to that grammar (in delta form)
|
---|
| 105 | //TODO: possibility: auto convert non-delta packages to delta grammars
|
---|
| 106 | ResourceSelectionDialog di2 = new ResourceSelectionDialog(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), f.getWorkspace().getRoot(), "Please select the extensions to the grammar!");
|
---|
| 107 | di2.open();
|
---|
| 108 | Object[] a = di2.getResult();
|
---|
| 109 |
|
---|
| 110 | /*
|
---|
| 111 | * add each selected delta grammar to a list of grammar
|
---|
| 112 | * (now checks if it imports the selected grammar)
|
---|
| 113 | */
|
---|
| 114 | deltas = new LinkedList<CompositeNode>();
|
---|
| 115 | deltaLabels = new LinkedList<String>();
|
---|
| 116 | int counter=1;
|
---|
| 117 |
|
---|
| 118 | for(int p=0; p<a.length; p++) {
|
---|
| 119 |
|
---|
| 120 | File b = (File) a[p];
|
---|
| 121 | if(!b.getFileExtension().equals("bnf"))
|
---|
| 122 | continue;
|
---|
| 123 |
|
---|
| 124 | URI ur = URI.createFileURI(b.getRawLocation().toPortableString());
|
---|
| 125 |
|
---|
| 126 | Resource res = set.getResource(ur, true);
|
---|
| 127 | if(res instanceof XtextResource) {
|
---|
| 128 |
|
---|
| 129 | XtextResource xres = (XtextResource) res;
|
---|
| 130 |
|
---|
| 131 | if(((EtsiBnfImpl) xres.getParseResult().getRootNode().getElement())
|
---|
| 132 | .getType()==null)
|
---|
| 133 | continue;
|
---|
| 134 |
|
---|
| 135 | if(((EtsiBnfImpl) xres.getParseResult().getRootNode().getElement()).getType().equals("/delta")) {
|
---|
| 136 | if(checkImport(xres.getParseResult().getRootNode(), uri.segment(uri.segmentCount()-1))) {
|
---|
| 137 | deltas.add(xres.getParseResult().getRootNode());
|
---|
| 138 | deltaLabels.add("Package" + counter);
|
---|
| 139 | // createNewLine("package:" + '\"' + res.getURI().segment(res.getURI().segmentCount()-1) + '\"' + ";" + '\n');
|
---|
| 140 | createNewLine("import " + '\"' + res.getURI().segment(res.getURI().segmentCount()-1) + '\"' + " /package label: Package" + counter + ";" + '\n');
|
---|
| 141 | counter++;
|
---|
| 142 | }
|
---|
| 143 | }
|
---|
| 144 | }
|
---|
| 145 |
|
---|
| 146 | }
|
---|
| 147 |
|
---|
| 148 | createNewLine('\n' + " global combinator: /and" + '\n' );
|
---|
| 149 |
|
---|
| 150 | //handle the extensions to each rule of the core grammar, if any
|
---|
| 151 | for(AbstractNode node: NodeUtil.getAllContents( xtextResource.getParseResult().getRootNode())) {
|
---|
| 152 | if(node.getElement() instanceof Rule) {
|
---|
| 153 | handleExtensions(node);
|
---|
| 154 | }
|
---|
| 155 | }
|
---|
| 156 |
|
---|
| 157 | }
|
---|
| 158 | }
|
---|
| 159 | }
|
---|
| 160 |
|
---|
| 161 | /*
|
---|
| 162 | * 1. check each rule in every package if it extends the given rule
|
---|
| 163 | * if it does, add it to a list of rules
|
---|
| 164 | * If any found:
|
---|
| 165 | * 2. create a general rule combinator with the rule as a comment
|
---|
| 166 | * 3. repeat: 3.1 take the rule from the list with the lowest extension point.
|
---|
| 167 | * 3.2 if its the first extension at that point, create a new hook combinator
|
---|
| 168 | * 3.3 create a comment with the extension
|
---|
| 169 | * 3.4 remove it from the list of rules
|
---|
| 170 | * until no rules remain in the list
|
---|
| 171 | *
|
---|
| 172 | */
|
---|
| 173 | private void handleExtensions(AbstractNode node) {
|
---|
| 174 |
|
---|
| 175 | LinkedList<AbstractNode> rules = new LinkedList<AbstractNode>();
|
---|
| 176 |
|
---|
| 177 | String name = ((Rule) node.getElement()).getName().trim();
|
---|
| 178 |
|
---|
| 179 | for(int i=0; i<deltas.size(); i++) {
|
---|
| 180 | for(AbstractNode node2: NodeUtil.getAllContents(deltas.get(i))){
|
---|
| 181 | if(node2.getElement() instanceof ExtRule)
|
---|
| 182 | if(((ExtRule) node2.getElement()).getName().equals(name))
|
---|
| 183 | rules.add(node2);
|
---|
| 184 | }
|
---|
| 185 |
|
---|
| 186 | }
|
---|
| 187 |
|
---|
| 188 | AbstractNode old=null;
|
---|
| 189 | AbstractNode current=null;
|
---|
| 190 |
|
---|
| 191 | if(rules.size()!=0) {
|
---|
| 192 | createNewLine("\n \n" + "// rule combinator: " + name + " /and" + '\n');
|
---|
| 193 | createNewLine("// " + removeNewLines(node) + '\n');
|
---|
| 194 |
|
---|
| 195 | boolean start = true;
|
---|
| 196 | while(rules.size()>0) {
|
---|
| 197 | current = selectFirstExtension(rules);
|
---|
| 198 | int index = deltas.indexOf(current.getParent());
|
---|
| 199 | if(start) {
|
---|
| 200 | old = current;
|
---|
| 201 | }
|
---|
| 202 | /// URI uri = current.getElement().eResource().getURI();
|
---|
| 203 | if((((ExtRule) current.getElement()).getRuleext()!=((ExtRule) old.getElement()).getRuleext())||start) {
|
---|
| 204 |
|
---|
| 205 | createNewLine('\n' + "hook combinator: " + name + " (" +
|
---|
| 206 | ((ExtRule) current.getElement()).getRuleext() + ") " + '\n' + " ( \"" + deltaLabels.get(index) + "\" )" );
|
---|
| 207 |
|
---|
| 208 | start=false;
|
---|
| 209 | }
|
---|
| 210 |
|
---|
| 211 | else {
|
---|
| 212 | createNewLine(" \n ( \"" + deltaLabels.get(index) + "\" )");
|
---|
| 213 |
|
---|
| 214 | }
|
---|
| 215 | createNewLine('\n' + "// " + current.serialize().trim() );
|
---|
| 216 | old=current;
|
---|
| 217 |
|
---|
| 218 | }
|
---|
| 219 |
|
---|
| 220 |
|
---|
| 221 | }
|
---|
| 222 |
|
---|
| 223 | }
|
---|
| 224 |
|
---|
| 225 | //checks if the grammar, described by compNode imports the given uri
|
---|
| 226 | private boolean checkImport(CompositeNode compNode, String uri) {
|
---|
| 227 | Iterable<AbstractNode> allNodes = NodeUtil.getAllContents(compNode);
|
---|
| 228 | for(AbstractNode node : allNodes) {
|
---|
| 229 | if(node.getElement() instanceof Import)
|
---|
| 230 | if(((Import) node.getElement()).getImportURI().equals(uri))
|
---|
| 231 | return true;
|
---|
| 232 | }
|
---|
| 233 |
|
---|
| 234 | return false;
|
---|
| 235 | }
|
---|
| 236 |
|
---|
| 237 | //removes all the lines from the string describing a node
|
---|
| 238 | private String removeNewLines(AbstractNode node) {
|
---|
| 239 | EList<LeafNode> leaves = node.getLeafNodes();
|
---|
| 240 | String temp = "";
|
---|
| 241 | for(int i=0; i<leaves.size(); i++) {
|
---|
| 242 | if(!(leaves.get(i).getGrammarElement() instanceof org.eclipse.xtext.impl.TerminalRuleImpl))
|
---|
| 243 | temp=temp.concat(leaves.get(i).serialize() + " ");
|
---|
| 244 | }
|
---|
| 245 | return temp;
|
---|
| 246 | }
|
---|
| 247 |
|
---|
| 248 | //selects the rule with the lowest extension point from the list and removes it
|
---|
| 249 | private AbstractNode selectFirstExtension(LinkedList<AbstractNode> rules) {
|
---|
| 250 |
|
---|
| 251 | AbstractNode first = rules.get(0);
|
---|
| 252 | int index = 0;
|
---|
| 253 | for(int i=0; i<rules.size(); i++) {
|
---|
| 254 | if(((ExtRule) first.getElement()).getRuleext() > ((ExtRule) rules.get(i).getElement()).getRuleext()) {
|
---|
| 255 | first=rules.get(i);
|
---|
| 256 | index=i;
|
---|
| 257 | }
|
---|
| 258 | }
|
---|
| 259 | rules.remove(index);
|
---|
| 260 | return first;
|
---|
| 261 |
|
---|
| 262 | }
|
---|
| 263 |
|
---|
| 264 | //creates a new line in the file
|
---|
| 265 | private void createNewLine(String rule) {
|
---|
| 266 | try {
|
---|
| 267 | if (file.exists()) {
|
---|
| 268 | byte[] bytes = (rule).getBytes();
|
---|
| 269 | InputStream source = new ByteArrayInputStream(bytes);
|
---|
| 270 | file.appendContents(source, IResource.NONE, null);
|
---|
| 271 | }
|
---|
| 272 | } catch (CoreException e) {
|
---|
| 273 | e.printStackTrace();
|
---|
| 274 | }
|
---|
| 275 | }
|
---|
| 276 |
|
---|
| 277 |
|
---|
| 278 | @Override
|
---|
| 279 | public void selectionChanged(IAction action, ISelection selection) {
|
---|
| 280 | if (selection instanceof IStructuredSelection) {
|
---|
| 281 | this.selection = (IStructuredSelection) selection;
|
---|
| 282 | } else {
|
---|
| 283 | this.selection = StructuredSelection.EMPTY;
|
---|
| 284 | }
|
---|
| 285 | }
|
---|
| 286 | }
|
---|