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.


        final ICompilationUnit cunit = type.getCompilationUnit();
        if (cunit == null)
            return null; // not a source type


        ASTParser parser = ASTParser.newParser(AST.JLS4);
        parser.setKind(ASTParser.K_COMPILATION_UNIT);
        parser.setSource(cunit);
        parser.setResolveBindings(true);
        return (CompilationUnit) parser.createAST(null);
    }

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      index--;
    }


    recoveredDocument.set(new String(content));


    final ASTParser parser = ASTParser.newParser(ASTProvider.SHARED_AST_LEVEL);
    parser.setResolveBindings(true);
    parser.setStatementsRecovery(true);
    parser.setSource(content);
    parser.setUnitName(fCompilationUnit.getElementName());
    parser.setProject(fCompilationUnit.getJavaProject());


    return (CompilationUnit) parser.createAST(new NullProgressMonitor());
  }

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    return cu;
  }


  public static CompilationUnit parse(final ITypeRoot unit, final IProgressMonitor mon)
  {
    ASTParser parser = ASTParser.newParser(AST.JLS3);
    parser.setKind(ASTParser.K_COMPILATION_UNIT);
    parser.setSource(unit);
    parser.setProject(unit.getJavaProject());
    parser.setResolveBindings(true);
    parser.setStatementsRecovery(true);
    return (CompilationUnit) parser.createAST(mon); // parse
  }

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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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            monitorInternal.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;
        }


        @SuppressWarnings("unchecked")

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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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    this.resolveElements();
    System.out.println(model);
  }


  private void resolveElements() {
    ASTParser parser = ASTParser.newParser(AST.JLS3);
    parser.setResolveBindings(true);
    parser.setProject(project);
    IJavaElement[] elements = toBeResolved.toArray(new IJavaElement[toBeResolved.size()]);
    IBinding[] bindings = parser.createBindings(elements, null);
    for (IBinding each: bindings) this.resolveBinding(each);
  }

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      }
  }


  protected CompilationUnit getCompilationUnit(String unitName, char[] contents, boolean resolveBindings, IString javaVersion) 
      throws IOException {
    ASTParser parser = ASTParser.newParser(AST.JLS4);
    parser.setUnitName(unitName);
    parser.setResolveBindings(resolveBindings);
    parser.setSource(contents);
    parser.setBindingsRecovery(true);
    parser.setStatementsRecovery(true);


    Hashtable<String, String> options = new Hashtable<String, String>();


    options.put(JavaCore.COMPILER_SOURCE, javaVersion.getValue());
    options.put(JavaCore.COMPILER_COMPLIANCE, javaVersion.getValue());
    options.put(JavaCore.COMPILER_DOC_COMMENT_SUPPORT, "enabled");


    parser.setCompilerOptions(options);


    parser.setEnvironment(classPathEntries.toArray(new String[classPathEntries.size()]),
        sourcePathEntries.toArray(new String[sourcePathEntries.size()]), null, true);


    CompilationUnit cu = (CompilationUnit) parser.createAST(null);


    return cu;
  }

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