Examples of org.eclipse.jdt.core.dom.ASTParser

org.eclipse.jdt.core.dom.ASTParser
les JDK 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6 parser.setSource(source); // In order to parse 1.5 code, some compiler options need to be set to 1.5 Map options = JavaCore.getOptions(); JavaCore.setComplianceOptions(JavaCore.VERSION_1_5, options); parser.setCompilerOptions(options); CompilationUnit result = (CompilationUnit) parser.createAST(null); Once a configured parser instance has been used to create an AST, the settings are automatically reset to their defaults, ready for the parser instance to be reused.

There are a number of configurable features:
- Source string from {@link #setSource(char[]) char[]}, {@link #setSource(ICompilationUnit) ICompilationUnit}, or {@link #setSource(IClassFile) IClassFile}, and limited to a specified {@linkplain #setSourceRange(int,int) subrange}.
- Whether {@linkplain #setResolveBindings(boolean) bindings} will be created.
- Which {@linkplain #setWorkingCopyOwner(WorkingCopyOwner) working copy owner} to use when resolving bindings.
- A hypothetical {@linkplain #setUnitName(String) compilation unit file name}and {@linkplain #setProject(IJavaProject) Java project}for locating a raw source string in the Java model (when resolving bindings)
- Which {@linkplain #setCompilerOptions(Map) compiler options}to use. This is especially important to use if the parsing/scanning of the source code requires a different version than the default of the workspace. For example, the workspace defaults are 1.4 and you want to create an AST for a source code that is using 1.5 constructs.
- Whether to parse just {@linkplain #setKind(int) an expression, statements,or body declarations} rather than an entire compilation unit.
- Whether to return a {@linkplain #setFocalPosition(int) abridged AST}focused on the declaration containing a given source position.
@since 3.0 @noinstantiate This class is not intended to be instantiated by clients.

   * creates a AST tree based on the ICompilationUnit passed in
   * @param iUnit
   * @return a CompilationUnit
   */
  public static CompilationUnit parse (ICompilationUnit iUnit){
    ASTParser parser = ASTParser.newParser(AST.JLS3);
    parser.setKind(ASTParser.K_COMPILATION_UNIT);
    parser.setSource(iUnit);
    parser.setResolveBindings(true);
    return (CompilationUnit) parser.createAST(null);
  }

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            public Object doTask() throws Throwable {
              return createBeanFromClass(beanClass);
            }
          });
          WidgetAdapter beanAdapter = ExtensionRegistry.createWidgetAdapter(bean);
          ASTParser parser = ASTParser.newParser(AST.JLS3);
          parser.setSource(unit);
          CompilationUnit cunit = (CompilationUnit) parser.createAST(null);
          parseEventListener(cunit, beanAdapter);
          initDesignedWidget(cunit, bean);
          parsePropertyValue(lnf, cunit, beanAdapter);
          beanAdapter.clearDirty();
          return beanAdapter;

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    IType type = unit.getType(unit_name);
    return type;
  }


  public static ImportRewrite createImportRewrite(ICompilationUnit unit) {
    ASTParser parser = ASTParser.newParser(AST.JLS3);
    parser.setSource(unit);
    parser.setResolveBindings(false);
    parser.setFocalPosition(0);
    CompilationUnit cu = (CompilationUnit) parser.createAST(null);
    return CodeStyleConfiguration.createImportRewrite(cu, true);
  }

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          nonExistingFields.add(name);
      }
      for (String nonfield : nonExistingFields) {
        removedNames.remove(nonfield);
      }
      ASTParser astparser = ASTParser.newParser(AST.JLS3);
      astparser.setSource(unit);
      CompilationUnit cunit = (CompilationUnit) astparser.createAST(null);
      List<String> getmethods = new ArrayList<String>();
      for (int i = 0; i < removedNames.size(); i++) {
        String removed_name = removedNames.get(i);
        String getmethod = NamespaceUtil.getGetMethodName(cunit, removed_name);
        getmethods.add(getmethod);

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      }
    } catch (CoreException e) {
      e.printStackTrace();
    }
    unit = JavaCore.createCompilationUnitFrom(file);
    ASTParser parser = ASTParser.newParser(AST.JLS3);
    parser.setSource(unit);
    cunit = (CompilationUnit) parser.createAST(null);
  }

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  private void addImplInterface(IType type, String cName) {
    try {
      ICompilationUnit icunit = type.getCompilationUnit();
      String source = icunit.getBuffer().getContents();
      Document document = new Document(source);
      ASTParser parser = ASTParser.newParser(AST.JLS3);
      parser.setSource(icunit);
      CompilationUnit cunit = (CompilationUnit) parser.createAST(null);
      cunit.recordModifications();
      AST ast = cunit.getAST();
      TypeDeclaration typeDec = (TypeDeclaration) cunit.types().get(0);
      List list = typeDec.superInterfaceTypes();
      Name name = ast.newName(cName);

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    Assert.assertFalse(stmts.isEmpty());
    return (Statement) stmts.get(stmts.size()-1);
  }
  
  public static CompilationUnit parseCode(String qualifiedCompUnitName, String code) throws CoreException {
    ASTParser parser = ASTParser.newParser(AST.JLS3);
    CompilationUnit node;
    
    IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject("CrystalTest");
    project.open(null /* IProgressMonitor */);
    
    IJavaProject javaProject = JavaCore.create(project);


    parser.setKind(ASTParser.K_COMPILATION_UNIT);
    parser.setProject(javaProject);
    parser.setSource(code.toCharArray());
    parser.setUnitName("/CrystalTest/" + qualifiedCompUnitName);
    parser.setResolveBindings(true);
    node = (CompilationUnit) parser.createAST(null);
    
    Message[] msgs = node.getMessages();
    if(msgs.length > 0) {
      StringBuffer errs = new StringBuffer();
      errs.append("Compiler problems for ");

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      throw new CrystalRuntimeException("null list of compilation units");
    
    Map<ICompilationUnit, ASTNode> parsedCompilationUnits = new HashMap<ICompilationUnit, ASTNode>();
     Iterator<ICompilationUnit> iter = compilationUnits.iterator();
     ICompilationUnit compUnit = null;
     ASTParser parser = null;
     ASTNode node = null;
     for(; iter.hasNext() ;) {
       compUnit = iter.next();
        parser = ASTParser.newParser(AST.JLS3);
       parser.setResolveBindings(true);
       parser.setSource(compUnit);
       node = parser.createAST(null);
       parsedCompilationUnits.put(compUnit, node);
     }
     return parsedCompilationUnits;
  }

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   * @throws IllegalStateException if {@code compUnit} doesn't have a
   * {@link ITypeRoot#getSource() source attachment} 
   * @see ASTParser#createAST(org.eclipse.core.runtime.IProgressMonitor)
   */
  public static ASTNode getASTNodeFromCompilationUnit(ITypeRoot compUnit) {
     ASTParser parser = ASTParser.newParser(AST.JLS3);
    parser.setResolveBindings(true);
    parser.setSource(compUnit);
    try {
      return parser.createAST(/* passing in monitor messes up previous monitor state */ null);
    } catch (IllegalStateException e) {
      log.log(Level.SEVERE, "could not parse " + compUnit, e);
      throw e;
    }
  }

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      throw new CrystalRuntimeException("null list of compilation units");
    
    Map<ICompilationUnit, ASTNode> parsedCompilationUnits = new HashMap<ICompilationUnit, ASTNode>();
     Iterator<ICompilationUnit> iter = compilationUnits.iterator();
     ICompilationUnit compUnit = null;
     ASTParser parser = null;
     ASTNode node = null;
     for(; iter.hasNext() ;) {
       compUnit = iter.next();
        parser = ASTParser.newParser(AST.JLS3);
       parser.setResolveBindings(true);
       parser.setSource(compUnit);
       node = parser.createAST(null);
       parsedCompilationUnits.put(compUnit, node);
     }
     return parsedCompilationUnits;
  }

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