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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.corext.template.php;
  12
  13 import org.eclipse.jface.text.IDocument;
  14 import org.eclipse.jface.text.templates.TemplateContextType;
  15 import org.eclipse.jface.text.templates.GlobalTemplateVariables;
  16 import org.eclipse.jface.text.templates.TemplateContext;
  17 import org.eclipse.jface.text.templates.TemplateException;
  18 import org.eclipse.jface.text.templates.TemplateVariable;
  19 import org.eclipse.jface.text.templates.TemplateVariableResolver;
  20
  21 import net.sourceforge.phpdt.core.ICompilationUnit;
  22 import net.sourceforge.phpdt.core.IJavaElement;
  23 import net.sourceforge.phpdt.core.IMethod;
  24 import net.sourceforge.phpdt.core.JavaModelException;
  25 import net.sourceforge.phpdt.core.Signature;
  26
  27
  28 /**
  29  * Compilation unit context type.
  30  */
  31 public abstract class CompilationUnitContextType extends TemplateContextType {
  32
  33         protected static class ReturnType extends TemplateVariableResolver {
  34                 public ReturnType() {
  35                         super("return_type", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.return.type")); //$NON-NLS-1$ //$NON-NLS-2$
  36                 }
  37                 protected String resolve(TemplateContext context) {
  38                         IJavaElement element= ((CompilationUnitContext) context).findEnclosingElement(IJavaElement.METHOD);
  39                         if (element == null)
  40                                 return null;
  41
  42                         try {
  43                                 return Signature.toString(((IMethod) element).getReturnType());
  44                         } catch (JavaModelException e) {
  45                                 return null;
  46                         }
  47                 }
  48         }
  49
  50         protected static class File extends TemplateVariableResolver {
  51                 public File() {
  52                         super("file", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.file")); //$NON-NLS-1$ //$NON-NLS-2$
  53                 }
  54                 protected String resolve(TemplateContext context) {
  55                         ICompilationUnit unit= ((CompilationUnitContext) context).getCompilationUnit();
  56
  57                         return (unit == null) ? null : unit.getElementName();
  58                 }
  59
  60                 /*
  61                  * @see org.eclipse.jface.text.templates.TemplateVariableResolver#isUnambiguous(org.eclipse.jface.text.templates.TemplateContext)
  62                  */
  63                 protected boolean isUnambiguous(TemplateContext context) {
  64                         return resolve(context) != null;
  65                 }
  66         }
  67
  68         protected static class PrimaryTypeName extends TemplateVariableResolver {
  69                 public PrimaryTypeName() {
  70                         super("primary_type_name", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.primary.type.name")); //$NON-NLS-1$ //$NON-NLS-2$
  71
  72                 }
  73                 protected String resolve(TemplateContext context) {
  74                         ICompilationUnit unit= ((CompilationUnitContext) context).getCompilationUnit();
  75                         if (unit == null)
  76                                 return null;
  77                         String elementName= unit.getElementName();
  78                         return elementName.substring(0, elementName.lastIndexOf('.'));
  79                 }
  80
  81                 /*
  82                  * @see org.eclipse.jface.text.templates.TemplateVariableResolver#isUnambiguous(org.eclipse.jface.text.templates.TemplateContext)
  83                  */
  84                 protected boolean isUnambiguous(TemplateContext context) {
  85                         return resolve(context) != null;
  86                 }
  87         }
  88
  89         protected static class EnclosingJavaElement extends TemplateVariableResolver {
  90                 protected final int fElementType;
  91
  92                 public EnclosingJavaElement(String name, String description, int elementType) {
  93                         super(name, description);
  94                         fElementType= elementType;
  95                 }
  96                 protected String resolve(TemplateContext context) {
  97                         IJavaElement element= ((CompilationUnitContext) context).findEnclosingElement(fElementType);
  98                         return (element == null) ? null : element.getElementName();
  99                 }
 100
 101                 /*
 102                  * @see org.eclipse.jface.text.templates.TemplateVariableResolver#isUnambiguous(org.eclipse.jface.text.templates.TemplateContext)
 103                  */
 104                 protected boolean isUnambiguous(TemplateContext context) {
 105                         return resolve(context) != null;
 106                 }
 107         }
 108
 109         protected static class Method extends EnclosingJavaElement {
 110                 public Method() {
 111                         super("enclosing_method", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.enclosing.method"), IJavaElement.METHOD); //$NON-NLS-1$ //$NON-NLS-2$
 112                 }
 113         }
 114
 115         protected static class Type extends EnclosingJavaElement {
 116                 public Type() {
 117                         super("enclosing_type", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.enclosing.type"), IJavaElement.TYPE); //$NON-NLS-1$ //$NON-NLS-2$
 118                 }
 119         }
 120 /*
 121         protected static class SuperClass extends EnclosingJavaElement {
 122                 public Type() {
 123                         super("super_class", TemplateMessages.getString("JavaContextType.variable.description.type"), IJavaElement.TYPE);
 124                 }
 125         }
 126 */
 127         protected static class Package extends EnclosingJavaElement {
 128                 public Package() {
 129                         super("enclosing_package", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.enclosing.package"), IJavaElement.PACKAGE_FRAGMENT); //$NON-NLS-1$ //$NON-NLS-2$
 130                 }
 131         }
 132
 133         protected static class Project extends EnclosingJavaElement {
 134                 public Project() {
 135                         super("enclosing_project", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.enclosing.project"), IJavaElement.JAVA_PROJECT); //$NON-NLS-1$ //$NON-NLS-2$
 136                 }
 137         }
 138 /*
 139         protected static class Project2 extends TemplateVariableResolver {
 140                 public Project2() {
 141                         super("project", TemplateMessages.getString("JavaContextType.variable.description.project"));
 142                 }
 143                 public String evaluate(TemplateContext context) {
 144                         ICompilationUnit unit= ((JavaContext) context).getUnit();
 145                         return (unit == null) ? null : unit.getJavaProject().getElementName();
 146                 }
 147         }
 148 */
 149         protected static class Arguments extends TemplateVariableResolver {
 150                 public Arguments() {
 151                         super("enclosing_method_arguments", JavaTemplateMessages.getString("CompilationUnitContextType.variable.description.enclosing.method.arguments")); //$NON-NLS-1$ //$NON-NLS-2$
 152                 }
 153                 protected String resolve(TemplateContext context) {
 154                         IJavaElement element= ((CompilationUnitContext) context).findEnclosingElement(IJavaElement.METHOD);
 155                         if (element == null)
 156                                 return null;
 157
 158                         IMethod method= (IMethod) element;
 159
 160                         try {
 161                                 String[] arguments= method.getParameterNames();
 162                                 StringBuffer buffer= new StringBuffer();
 163
 164                                 for (int i= 0; i < arguments.length; i++) {
 165                                         if (i > 0)
 166                                                 buffer.append(", "); //$NON-NLS-1$
 167                                         buffer.append(arguments[i]);
 168                                 }
 169
 170                                 return buffer.toString();
 171
 172                         } catch (JavaModelException e) {
 173                                 return null;
 174                         }
 175                 }
 176         }
 177
 178 /*
 179         protected static class Line extends TemplateVariableResolver {
 180                 public Line() {
 181                         super("line", TemplateMessages.getString("CompilationUnitContextType.variable.description.line"));
 182                 }
 183                 public String evaluate(TemplateContext context) {
 184                         return ((JavaTemplateContext) context).guessLineNumber();
 185                 }
 186         }
 187 */
 188
 189         /*
 190          * @see ContextType#ContextType(String)
 191          */
 192         public CompilationUnitContextType(String name) {
 193                 super(name);
 194         }
 195
 196         public abstract CompilationUnitContext createContext(IDocument document, int completionPosition, int length, ICompilationUnit compilationUnit);
 197
 198
 199         /* (non-Javadoc)
 200          * @see net.sourceforge.phpdt.internal.corext.template.ContextType#validateVariables(net.sourceforge.phpdt.internal.corext.template.TemplateVariable[])
 201          */
 202         protected void validateVariables(TemplateVariable[] variables) throws TemplateException {
 203                 // check for multiple cursor variables
 204                 for (int i= 0; i < variables.length; i++) {
 205                         TemplateVariable var= variables[i];
 206                         if (var.getType().equals(GlobalTemplateVariables.Cursor.NAME)) {
 207                                 if (var.getOffsets().length > 1) {
 208                                         throw new TemplateException(JavaTemplateMessages.getString("ContextType.error.multiple.cursor.variables")); //$NON-NLS-1$
 209                                 }
 210                         }
 211                 }
 212         }
 213
 214 }