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.


  private void processCompilationUnit(ICompilationUnit compilationUnit, String packageName, IProgressMonitor monitor) {
    SubMonitor subMonitor = SubMonitor.convert(monitor, 100);
    subMonitor.setTaskName("Parsing " + compilationUnit.getElementName());
    
    ASTParser lParser = ASTParser.newParser(AST.JLS3); // up to J2SE 1.5
    lParser.setSource(compilationUnit);
    lParser.setResolveBindings(true);
    
    CompilationUnit cu = (CompilationUnit) lParser.createAST(subMonitor.newChild(60));
    cu.accept(new CompilationUnitVisitor(compilationUnit, packageName, modelOf(compilationUnit.getJavaProject())));
    subMonitor.worked(40);
  }

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  public IStatus analyze(String sourceCode, int start, int end) {
    IStatus status = Status.OK_STATUS;


    resetASTMcCabe();
    ASTParser lParser = ASTParser.newParser(AST.JLS3); // up to J2SE 1.5
    lParser.setSource(sourceCode.toCharArray());
    lParser.setResolveBindings(false);
    ASTNode lResult = lParser.createAST(null);
//    IProblem[] problems = lResult.getProblems();
//    if (problems.length > 0) {
//      for (int i = 0; i < problems.length; i++) {
//        logger.warn(problems[i].getMessage());
//      }

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     * Calculates the McCabe value for a string
     */
    protected double calculateMcCabe(String code, int start, int end) {
        McCabeASTVisitor mcbVisitor = new McCabeASTVisitor();
        
        ASTParser lParser = ASTParser.newParser(AST.JLS3); // up to J2SE 1.5
        lParser.setSource(code.toCharArray());
        lParser.setResolveBindings(false);
        lParser.setSourceRange(start, (end-start)+1);
        
        
        ASTNode lResult = lParser.createAST(null);
        // Not sure if this always finds the correct ASTNode!
        ASTNode specificNode = NodeFinder.perform(lResult, start, end-start);
        if (specificNode.getStartPosition() != start || specificNode.getLength() != (end-start)) {
            System.out.println("Could not find the corresponding AST node at position: " + start);
        }

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        resetASTCrawler();


        fCurrCompilationUnit = cu;


        ASTParser lParser = ASTParser.newParser(AST.JLS3); // up to J2SE 1.5
        lParser.setSource(cu);
        lParser.setResolveBindings(true);
        CompilationUnit lResult = (CompilationUnit) lParser.createAST(monitor);
        IProblem[] problems = lResult.getProblems();
        if (problems.length > 0) {
            for (IProblem problem : problems) {
                sLogger.warn(problem.getMessage());
            }

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     */
    public IStatus analyze(String sourceCode, IProgressMonitor monitor) {
        IStatus status = Status.OK_STATUS;


        resetASTCrawler();
        ASTParser lParser = ASTParser.newParser(AST.JLS3); // up to J2SE 1.5
        lParser.setSource(sourceCode.toCharArray());
        lParser.setResolveBindings(true);
        CompilationUnit lResult = (CompilationUnit) lParser.createAST(monitor);
        IProblem[] problems = lResult.getProblems();
        if (problems.length > 0) {
            for (IProblem problem : problems) {
                sLogger.warn(problem.getMessage());
            }

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  ////////////////////////////////////////////////////////////////////////////
  /**
   * Parse given model {@link ICompilationUnit} into AST {@link CompilationUnit}.
   */
  public static CompilationUnit parseUnit(ICompilationUnit compilationUnit) {
    ASTParser parser = ASTParser.newParser(AST.JLS3);
    parser.setSource(compilationUnit);
    parser.setResolveBindings(true);
    return (CompilationUnit) parser.createAST(null);
  }

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   @Override
   @SuppressWarnings({ "rawtypes", "unchecked" })
   public JavaSource<?> parse(final String data)
   {
      Document document = new Document(data);
      ASTParser parser = ASTParser.newParser(AST.JLS4);


      parser.setSource(document.get().toCharArray());
      Map options = JavaCore.getOptions();
      options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_7);
      options.put(CompilerOptions.OPTION_Encoding, "UTF-8");
      parser.setCompilerOptions(options);


      parser.setResolveBindings(true);
      parser.setKind(ASTParser.K_COMPILATION_UNIT);
      CompilationUnit unit = (CompilationUnit) parser.createAST(null);
      unit.recordModifications();


      TypeDeclarationFinderVisitor visitor = new TypeDeclarationFinderVisitor();
      unit.accept(visitor);

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   @Override
   @SuppressWarnings({ "rawtypes", "unchecked" })
   public JavaSource<?> parse(final String data)
   {
      Document document = new Document(data);
      ASTParser parser = ASTParser.newParser(AST.JLS3);


      parser.setSource(document.get().toCharArray());
      Map options = JavaCore.getOptions();
      options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5);
      parser.setCompilerOptions(options);


      parser.setResolveBindings(true);
      parser.setKind(ASTParser.K_COMPILATION_UNIT);
      CompilationUnit unit = (CompilationUnit) parser.createAST(null);
      unit.recordModifications();


      TypeDeclarationFinderVisitor visitor = new TypeDeclarationFinderVisitor();
      unit.accept(visitor);

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   @Override
   @SuppressWarnings({ "rawtypes", "unchecked" })
   public JavaSource<?> parse(final String data)
   {
      Document document = new Document(data);
      ASTParser parser = ASTParser.newParser(AST.JLS3);


      parser.setSource(document.get().toCharArray());
      Map options = JavaCore.getOptions();
      options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5);
      options.put(CompilerOptions.OPTION_Encoding, "UTF-8");
      parser.setCompilerOptions(options);


      parser.setResolveBindings(true);
      parser.setKind(ASTParser.K_COMPILATION_UNIT);
      CompilationUnit unit = (CompilationUnit) parser.createAST(null);
      unit.recordModifications();


      TypeDeclarationFinderVisitor visitor = new TypeDeclarationFinderVisitor();
      unit.accept(visitor);

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   @SuppressWarnings({ "rawtypes", "unchecked" })
   private JavaType<?> parse(final String data)
   {
      Document document = new Document(data);
      ASTParser parser = ASTParser.newParser(AST.JLS8);


      parser.setSource(document.get().toCharArray());
      Map options = JavaCore.getOptions();
      options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_8);
      options.put(CompilerOptions.OPTION_Encoding, "UTF-8");
      parser.setCompilerOptions(options);


      parser.setResolveBindings(true);
      parser.setKind(ASTParser.K_COMPILATION_UNIT);
      CompilationUnit unit = (CompilationUnit) parser.createAST(null);
      unit.recordModifications();


      TypeDeclarationFinderVisitor visitor = new TypeDeclarationFinderVisitor();
      unit.accept(visitor);

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