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.

            methods.add(xpathList);
        }
    }
    
    private void performPropertyParsingViaJDTAST(final String classname, final Set<TMLScriptProperty> properties) {
        ASTParser parser = ASTParser.newParser(AST.JLS3);
        StringWriter writer = new StringWriter();
        InputStreamReader reader = new InputStreamReader(retrieveJavaSource(classname));
        try {
            WGUtils.inToOut(reader, writer, 1024);
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        parser.setSource(writer.toString().toCharArray());
        ASTNode ast = parser.createAST(new NullProgressMonitor());
        ast.accept(new ASTVisitor() {


            private Map<String, String> _imports = new HashMap<String, String>();
            
            @Override

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            return methods;
        }
      }
    
    private void performMethodParsingViaJDTAST(final String classname, final Set<TMLScriptMethod> methods, final int envFlags) {
        ASTParser parser = ASTParser.newParser(AST.JLS3);
        StringWriter writer = new StringWriter();
        InputStreamReader reader = new InputStreamReader(retrieveJavaSource(classname));
        try {
            WGUtils.inToOut(reader, writer, 1024);
        }
        catch (IOException e) {
        }
        parser.setSource(writer.toString().toCharArray());
        ASTNode ast = parser.createAST(new NullProgressMonitor());
        ast.accept(new ASTVisitor() {
            private Map<String, String> _imports = new HashMap<String, String>();


            @Override
            public void endVisit(ImportDeclaration node) {

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            return constructors;
    }


    private void performConstructorParsingViaJDTAST(final String classname, final Set<TMLScriptMethod> constructors) {
        ASTParser parser = ASTParser.newParser(AST.JLS3);
        StringWriter writer = new StringWriter();
        InputStreamReader reader = new InputStreamReader(retrieveJavaSource(classname));
        try {
            WGUtils.inToOut(reader, writer, 1024);
        }
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        parser.setSource(writer.toString().toCharArray());
        ASTNode ast = parser.createAST(new NullProgressMonitor());
        ast.accept(new ASTVisitor() {
            
            private Map<String, String> _imports = new HashMap<String, String>();


            @Override

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  protected String constructCUContent(ICompilationUnit cu, String typeContent, String lineDelimiter) throws CoreException {
    String typeComment = getTypeComment(cu, lineDelimiter);
    IPackageFragment pack = (IPackageFragment) cu.getParent();
    String content = CodeGeneration.getCompilationUnitContent(cu, typeComment, typeContent, lineDelimiter);
    if (content != null) {
      ASTParser parser = ASTParser.newParser(AST.JLS2);
      parser.setSource(content.toCharArray());
      CompilationUnit unit = (CompilationUnit) parser.createAST(null);
      if ((pack.isDefaultPackage() || unit.getPackage() != null) && !unit.types().isEmpty()) { return content; }
    }
    StringBuffer buf = new StringBuffer();
    if (!pack.isDefaultPackage()) {
      buf.append("package ").append(pack.getElementName()).append(';'); //$NON-NLS-1$

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   * @param cu Compilation unit that is processed
   * @param needsSave Save needed?
   * @throws CoreException
   */
  protected void removeUnusedImports(ICompilationUnit cu, boolean needsSave) throws CoreException {
    ASTParser parser = ASTParser.newParser(AST.JLS2);
    parser.setSource(cu);
    parser.setResolveBindings(true);
    CompilationUnit root = (CompilationUnit) parser.createAST(null);
    IProblem[] problems = root.getProblems();
    ArrayList res = new ArrayList();
    for (int i = 0; i < problems.length; i++) {
      if (problems[i].getID() == IProblem.UnusedImport) {
        String imp = problems[i].getArguments()[0];

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            if (!JavaModelUtil.is50OrHigher(project)) {
                status.setError(NewWizardMessages.NewTypeWizardPage_error_TypeParameters);
                return status;
            }
            String typeDeclaration = "class " + typeNameWithParameters + " {}"; //$NON-NLS-1$//$NON-NLS-2$
            ASTParser parser = ASTParser.newParser(ASTProvider.SHARED_AST_LEVEL);
            parser.setSource(typeDeclaration.toCharArray());
            parser.setProject(project);
            CompilationUnit compilationUnit = (CompilationUnit) parser.createAST(null);
            IProblem[] problems = compilationUnit.getProblems();
            if (problems.length > 0) {
                status.setError(Messages.format(NewWizardMessages.NewTypeWizardPage_error_InvalidTypeName, problems[0].getMessage()));
                return status;
            }

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            monitor.done();
        }
    }


    private CompilationUnit createASTForImports(ICompilationUnit cu) {
        ASTParser parser = ASTParser.newParser(ASTProvider.SHARED_AST_LEVEL);
        parser.setSource(cu);
        parser.setResolveBindings(false);
        parser.setFocalPosition(0);
        return (CompilationUnit) parser.createAST(null);
    }

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        }
        return res;
    }


    private void removeUnusedImports(ICompilationUnit cu, Set<String> existingImports, boolean needsSave) throws CoreException {
        ASTParser parser = ASTParser.newParser(ASTProvider.SHARED_AST_LEVEL);
        parser.setSource(cu);
        parser.setResolveBindings(true);


        CompilationUnit root = (CompilationUnit) parser.createAST(null);
        if (root.getProblems().length == 0) {
            return;
        }


        List<ImportDeclaration> importsDecls = root.imports();

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        String fileComment = getFileComment(cu, lineDelimiter);
        String typeComment = getTypeComment(cu, lineDelimiter);
        IPackageFragment pack = (IPackageFragment) cu.getParent();
        String content = CodeGeneration.getCompilationUnitContent(cu, fileComment, typeComment, typeContent, lineDelimiter);
        if (content != null) {
            ASTParser parser = ASTParser.newParser(ASTProvider.SHARED_AST_LEVEL);
            parser.setProject(cu.getJavaProject());
            parser.setSource(content.toCharArray());
            CompilationUnit unit = (CompilationUnit) parser.createAST(null);
            if ((pack.isDefaultPackage() || unit.getPackage() != null) && !unit.types().isEmpty()) {
                return content;
            }
        }
        StringBuffer buf = new StringBuffer();

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        for (int index = 0; index < typeMethods.length; index++)
            handleIds.add(typeMethods[index].getHandleIdentifier());
        ArrayList<IMethod> newMethods = new ArrayList<IMethod>();
        CodeGenerationSettings settings = JavaPreferencesSettings.getCodeGenerationSettings(type.getJavaProject());
        settings.createComments = isAddComments();
        ASTParser parser = ASTParser.newParser(ASTProvider.SHARED_AST_LEVEL);
        parser.setResolveBindings(true);
        parser.setSource(cu);
        CompilationUnit unit = (CompilationUnit) parser.createAST(new SubProgressMonitor(monitor, 1));
        final ITypeBinding binding = ASTNodes.getTypeBinding(unit, type);
        if (binding != null) {
            if (doUnimplementedMethods) {
                AddUnimplementedMethodsOperation operation = new AddUnimplementedMethodsOperation(unit, binding, null, -1, false, true, false);
                operation.setCreateComments(isAddComments());

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