Merge pull request #599 from ArneDeutsch/feature-145

[xtext-eclipse#145] Create new implementations in core.

org.eclipse.xtext/src/org/eclipse/xtext/naming/DefaultCopyQualifiedNameService.xtend

@@ -0,0 +1,76 @@
+/*******************************************************************************
+ * Copyright (c) 2018 itemis AG (http://www.itemis.eu) and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *******************************************************************************/
+package org.eclipse.xtext.naming
+
+import com.google.inject.Inject
+import java.util.List
+import org.eclipse.emf.ecore.EObject
+import org.eclipse.xtext.naming.IQualifiedNameConverter
+import org.eclipse.xtext.naming.IQualifiedNameProvider
+import org.eclipse.xtext.naming.QualifiedName
+
+/**
+ * Default implementation for {@link ICopyQualifiedNameService}. Clients might use this implementation as base class.
+ * 
+ * @author Anton Kosyakov - Initial contribution and API
+ * @author Arne Deutsch - Moved to new package
+ * @since 2.14
+ */
+class DefaultCopyQualifiedNameService implements ICopyQualifiedNameService {
+
+	@Inject
+	IQualifiedNameProvider qualifiedNameProvider
+
+	@Inject
+	IQualifiedNameConverter qualifiedNameConverter
+
+	def dispatch getQualifiedName(EObject it, EObject context) {
+		toFullyQualifiedName
+	}
+
+	def dispatch getQualifiedName(EObject it, Void context) {
+		toFullyQualifiedName
+	}
+
+	def protected dispatch getQualifiedName(Void it, EObject context) {
+		null
+	}
+
+	def protected dispatch getQualifiedName(Void it, Void context) {
+		null
+	}
+
+	def protected <T> toQualifiedNames(List<T> it, (T)=>String toQualifiedNameFunction) {
+		if (it === null || size == 0) {
+			return ""
+		}
+		'''«FOR element : it SEPARATOR ', '»«toQualifiedNameFunction.apply(element)»«ENDFOR»'''
+	}
+
+	def protected toFullyQualifiedName(EObject it) {
+		if (eIsProxy) {
+			return null
+		}
+		toString(fullyQualifiedName)
+	}
+
+	def protected getFullyQualifiedName(EObject it) {
+		if (it === null) {
+			return null
+		}
+		qualifiedNameProvider.getFullyQualifiedName(it)
+	}
+
+	def protected toString(EObject it, QualifiedName fullyQualifiedName) {
+		if (fullyQualifiedName === null) {
+			return null
+		}
+		qualifiedNameConverter.toString(fullyQualifiedName)
+	}
+
+}

org.eclipse.xtext/src/org/eclipse/xtext/naming/ICopyQualifiedNameService.java

@@ -0,0 +1,35 @@
+/*******************************************************************************
+ * Copyright (c) 2018 itemis AG (http://www.itemis.eu) and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *******************************************************************************/
+package org.eclipse.xtext.naming;
+
+import org.eclipse.emf.ecore.EObject;
+
+/**
+ * Service to provide a description of the selected object such as a fully qualified name for a class or the method
+ * signature.
+ * 
+ * @author Anton Kosyakov - Initial contribution and API
+ * @author Arne Deutsch - Moved/copied to new package and document
+ * @since 2.14
+ */
+public interface ICopyQualifiedNameService {
+
+	/**
+	 * Compute a textual description of the selectedElement. Depending on context this might be different.
+	 * 
+	 * @param selectedElement
+	 *            The element to calculate the description for.
+	 * @param context
+	 *            The context to consider when calculating the description.
+	 * @return A textual description of the element. For a class this might be a fully qualified name such as
+	 *         "com.mydomain.MyClass" whereas for a method the parameter types might be included such
+	 *         "com.mydomain.MyClass.myMethod(String,int)".
+	 */
+	String getQualifiedName(EObject selectedElement, EObject context);
+
+}

org.eclipse.xtext/xtend-gen/org/eclipse/xtext/naming/DefaultCopyQualifiedNameService.java

@@ -0,0 +1,128 @@
+/**
+ * Copyright (c) 2018 itemis AG (http://www.itemis.eu) and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.xtext.naming;
+
+import com.google.inject.Inject;
+import java.util.Arrays;
+import java.util.List;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.xtend2.lib.StringConcatenation;
+import org.eclipse.xtext.naming.ICopyQualifiedNameService;
+import org.eclipse.xtext.naming.IQualifiedNameConverter;
+import org.eclipse.xtext.naming.IQualifiedNameProvider;
+import org.eclipse.xtext.naming.QualifiedName;
+import org.eclipse.xtext.xbase.lib.Functions.Function1;
+
+/**
+ * Default implementation for {@link ICopyQualifiedNameService}. Clients might use this implementation as base class.
+ * 
+ * @author Anton Kosyakov - Initial contribution and API
+ * @author Arne Deutsch - Moved to new package
+ * @since 2.14
+ */
+@SuppressWarnings("all")
+public class DefaultCopyQualifiedNameService implements ICopyQualifiedNameService {
+  @Inject
+  private IQualifiedNameProvider qualifiedNameProvider;
+  
+  @Inject
+  private IQualifiedNameConverter qualifiedNameConverter;
+  
+  protected String _getQualifiedName(final EObject it, final EObject context) {
+    return this.toFullyQualifiedName(it);
+  }
+  
+  protected String _getQualifiedName(final EObject it, final Void context) {
+    return this.toFullyQualifiedName(it);
+  }
+  
+  protected String _getQualifiedName(final Void it, final EObject context) {
+    return null;
+  }
+  
+  protected String _getQualifiedName(final Void it, final Void context) {
+    return null;
+  }
+  
+  protected <T extends Object> CharSequence toQualifiedNames(final List<T> it, final Function1<? super T, ? extends String> toQualifiedNameFunction) {
+    CharSequence _xblockexpression = null;
+    {
+      if (((it == null) || (it.size() == 0))) {
+        return "";
+      }
+      StringConcatenation _builder = new StringConcatenation();
+      {
+        boolean _hasElements = false;
+        for(final T element : it) {
+          if (!_hasElements) {
+            _hasElements = true;
+          } else {
+            _builder.appendImmediate(", ", "");
+          }
+          String _apply = toQualifiedNameFunction.apply(element);
+          _builder.append(_apply);
+        }
+      }
+      _xblockexpression = _builder;
+    }
+    return _xblockexpression;
+  }
+  
+  protected String toFullyQualifiedName(final EObject it) {
+    String _xblockexpression = null;
+    {
+      boolean _eIsProxy = it.eIsProxy();
+      if (_eIsProxy) {
+        return null;
+      }
+      _xblockexpression = this.toString(it, this.getFullyQualifiedName(it));
+    }
+    return _xblockexpression;
+  }
+  
+  protected QualifiedName getFullyQualifiedName(final EObject it) {
+    QualifiedName _xblockexpression = null;
+    {
+      if ((it == null)) {
+        return null;
+      }
+      _xblockexpression = this.qualifiedNameProvider.getFullyQualifiedName(it);
+    }
+    return _xblockexpression;
+  }
+  
+  protected String toString(final EObject it, final QualifiedName fullyQualifiedName) {
+    String _xblockexpression = null;
+    {
+      if ((fullyQualifiedName == null)) {
+        return null;
+      }
+      _xblockexpression = this.qualifiedNameConverter.toString(fullyQualifiedName);
+    }
+    return _xblockexpression;
+  }
+  
+  public String getQualifiedName(final EObject it, final EObject context) {
+    if (it != null
+         && context != null) {
+      return _getQualifiedName(it, context);
+    } else if (it != null
+         && context == null) {
+      return _getQualifiedName(it, (Void)null);
+    } else if (it == null
+         && context != null) {
+      return _getQualifiedName((Void)null, context);
+    } else if (it == null
+         && context == null) {
+      return _getQualifiedName((Void)null, (Void)null);
+    } else {
+      throw new IllegalArgumentException("Unhandled parameter types: " +
+        Arrays.<Object>asList(it, context).toString());
+    }
+  }
+}