Java NewClassTree类代码示例

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
public Boolean visitNewClass(NewClassTree node, TreePath p) {
    if (p == null)
        return super.visitNewClass(node, p);

    NewClassTree t = (NewClassTree) p.getLeaf();

    if (!scan(node.getIdentifier(), t.getIdentifier(), p))
        return false;

    if (!scan(node.getEnclosingExpression(), t.getEnclosingExpression(), p))
        return false;

    if (!checkLists(node.getTypeArguments(), t.getTypeArguments(), p))
        return false;

    if (!checkLists(node.getArguments(), t.getArguments(), p))
        return false;

    return scan(node.getClassBody(), t.getClassBody(), p);
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
/**
 * copy the initialization 'new String("NetBeers")' to 'new String()'.
 * It tests only change in expression, no expression swap.
 */
public void testFieldChangeInInitValue() throws IOException {
    System.err.println("testFieldChangeInInitValue");
    process(
        new Transformer<Void, Object>() {
            public Void visitVariable(VariableTree node, Object p) {
                super.visitVariable(node, p);
                if ("initialValueReplacer".contentEquals(node.getName())) {
                    if (Tree.Kind.NEW_CLASS.equals(node.getInitializer().getKind())) {
                        NewClassTree nct = (NewClassTree) node.getInitializer();
                        NewClassTree njuNct = make.NewClass(
                                nct.getEnclosingExpression(), 
                                (List<ExpressionTree>) nct.getTypeArguments(),
                                nct.getIdentifier(),
                                Collections.singletonList(make.Literal("NetBeans")),
                                nct.getClassBody()
                        );
                        copy.rewrite(nct, njuNct);
                    }
                }
                return null;
            }
        }
    );
    assertFiles("testFieldChangeInInitValue.pass");
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
public void testWrapMethod1() throws Exception {
    String code = "package hierbas.del.litoral;\n\n" +
        "import java.util.concurrent.atomic.AtomicBoolean;\n\n" +
        "public class Test {\n" +
        "}\n";
    runWrappingTest(code, new Task<WorkingCopy>() {
        public void run(WorkingCopy workingCopy) throws IOException {
            workingCopy.toPhase(Phase.RESOLVED);
            CompilationUnitTree cut = workingCopy.getCompilationUnit();
            TreeMaker make = workingCopy.getTreeMaker();
            ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
            ExpressionTree parsed = workingCopy.getTreeUtilities().parseExpression("new Object() { private void test(int a, int b, int c) throws java.io.FileNotFound, java.net.MalformedURLException { } }", new SourcePositions[1]);
            parsed = GeneratorUtilities.get(workingCopy).importFQNs(parsed);
            MethodTree method = (MethodTree) ((NewClassTree) parsed).getClassBody().getMembers().get(0);
            workingCopy.rewrite(clazz, make.addClassMember(clazz, method));
        }
    },
    FmtOptions.wrapMethodParams, WrapStyle.WRAP_IF_LONG.name(),
    FmtOptions.wrapThrowsKeyword, WrapStyle.WRAP_IF_LONG.name(),
    FmtOptions.wrapThrowsList, WrapStyle.WRAP_IF_LONG.name());
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
public void testWrapMethod2() throws Exception {
    String code = "package hierbas.del.litoral;\n\n" +
        "import java.util.concurrent.atomic.AtomicBoolean;\n\n" +
        "public class Test {\n" +
        "}\n";
    runWrappingTest(code, new Task<WorkingCopy>() {
        public void run(WorkingCopy workingCopy) throws IOException {
            workingCopy.toPhase(Phase.RESOLVED);
            CompilationUnitTree cut = workingCopy.getCompilationUnit();
            TreeMaker make = workingCopy.getTreeMaker();
            ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
            ExpressionTree parsed = workingCopy.getTreeUtilities().parseExpression("new Object() { private void test(int a, int b, int c) throws java.io.FileNotFoundException, java.net.MalformedURLException { } }", new SourcePositions[1]);
            parsed = GeneratorUtilities.get(workingCopy).importFQNs(parsed);
            MethodTree method = (MethodTree) ((NewClassTree) parsed).getClassBody().getMembers().get(0);
            workingCopy.rewrite(clazz, make.addClassMember(clazz, method));
        }
    },
    FmtOptions.wrapMethodParams, WrapStyle.WRAP_ALWAYS.name(),
    FmtOptions.wrapThrowsKeyword, WrapStyle.WRAP_ALWAYS.name(),
    FmtOptions.wrapThrowsList, WrapStyle.WRAP_ALWAYS.name());
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
public void testWrapMethod3() throws Exception {
    String code = "package hierbas.del.litoral;\n\n" +
        "import java.util.concurrent.atomic.AtomicBoolean;\n\n" +
        "public class Test {\n" +
        "}\n";
    runWrappingTest(code, new Task<WorkingCopy>() {
        public void run(WorkingCopy workingCopy) throws IOException {
            workingCopy.toPhase(Phase.RESOLVED);
            CompilationUnitTree cut = workingCopy.getCompilationUnit();
            TreeMaker make = workingCopy.getTreeMaker();
            ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
            ExpressionTree parsed = workingCopy.getTreeUtilities().parseExpression("new Object() { public <T> void test(java.lang.Class<T> c) { } }", new SourcePositions[1]);
            parsed = GeneratorUtilities.get(workingCopy).importFQNs(parsed);
            MethodTree method = (MethodTree) ((NewClassTree) parsed).getClassBody().getMembers().get(0);
            workingCopy.rewrite(clazz, make.addClassMember(clazz, method));
        }
    },
    FmtOptions.wrapMethodParams, WrapStyle.WRAP_ALWAYS.name(),
    FmtOptions.wrapThrowsKeyword, WrapStyle.WRAP_ALWAYS.name(),
    FmtOptions.wrapThrowsList, WrapStyle.WRAP_ALWAYS.name());
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
@Override
public Void visitNewClass(NewClassTree node, Stack<Tree> p) {
    if (instantRename) {
        return super.visitNewClass(node, p);
    }
    
    Element el = info.getTrees().getElement(getCurrentPath());

    if (toFind.equals(el) && node.getIdentifier() != null) {
        Token<JavaTokenId> t = Utilities.getToken(info, doc, new TreePath(getCurrentPath(), node.getIdentifier()));
        
        if (t != null)
            usages.add(t);

        return null;
    }

    if (el != null && toFind.equals(el.getEnclosingElement())) {
        return null;
    }
    
    return super.visitNewClass(node, p);
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
@Hint(
    displayName = "#DN_AnonClassMethodCount",
    description = "#DESC_AnonClassMethodCount",
    category = "metrics",
    options = { Hint.Options.HEAVY, Hint.Options.QUERY },
    enabled = false
)
@TriggerPatterns({
    @TriggerPattern("new $classname<$tparams$>($params$) { $members$; }"),
    @TriggerPattern("$expr.new $classname<$tparams$>($params$) { $members$; }"),
    @TriggerPattern("new $classname($params$) { $members$; }"),
    @TriggerPattern("$expr.new $classname($params$) { $members$; }"),
})
@UseOptions({ OPTION_ANON_CLASS_METHODS_LIMIT})
public static ErrorDescription anonymousTooManyMethods(HintContext ctx) {
    NewClassTree nct = (NewClassTree)ctx.getPath().getLeaf();

    return checkTooManyMethods(ctx, 
        new TreePath(ctx.getPath(), nct.getClassBody()),
        ctx.getPreferences().getInt(OPTION_ANON_CLASS_METHODS_LIMIT, DEFAULT_ANON_CLASS_METHODS_LIMIT),
        true);
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
private static String className(TreePath path) {
    ClassTree ct = (ClassTree) path.getLeaf();
    
    if (path.getParentPath().getLeaf().getKind() == Kind.NEW_CLASS) {
        NewClassTree nct = (NewClassTree) path.getParentPath().getLeaf();
        
        if (nct.getClassBody() == ct) {
            return simpleName(nct.getIdentifier());
        }
    } else if (path.getParentPath().getLeaf() == path.getCompilationUnit()) {
        ExpressionTree pkg = path.getCompilationUnit().getPackageName();
        String pkgName = pkg != null ? pkg.toString() : null;
        if (pkgName != null && !pkgName.contentEquals(ERR_NAME)) {
            return pkgName + '.' + ct.getSimpleName().toString();
        }
    }
    
    return ct.getSimpleName().toString();
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
public ConvertToLambdaPreconditionChecker(TreePath pathToNewClassTree, CompilationInfo info) {

        this.pathToNewClassTree = pathToNewClassTree;
        this.newClassTree = (NewClassTree) pathToNewClassTree.getLeaf();
        this.info = info;
        this.types = info.getTypes();

        Element el = info.getTrees().getElement(pathToNewClassTree);
        if (el != null && el.getKind() == ElementKind.CONSTRUCTOR) {
            createdClass = el.getEnclosingElement();
        } else {
            createdClass = null;
        }
        this.lambdaMethodTree = getMethodFromFunctionalInterface(this.pathToNewClassTree);
        this.localScope = getScopeFromTree(this.pathToNewClassTree);
        this.ownerClass = findFieldOwner();
    }
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
@Override
public Tree visitNewClass(NewClassTree node, Trees p) {
    Tree t = super.visitNewClass(node, p);
    // new class tree > expression statement tree > block. Does not accept anonymous classes for ctor references.
    if (node.getClassBody() == null && singleStatementLambdaMethodBody == getCurrentPath().getParentPath().getParentPath().getLeaf()) {
        Tree parent = getCurrentPath().getParentPath().getLeaf();
        Element el = info.getTrees().getElement(getCurrentPath());
        if (el == null || el.getKind() != ElementKind.CONSTRUCTOR || !el.getEnclosingElement().getKind().isClass()) {
            return t;
        }
        el = el.getEnclosingElement();
        if (parent.getKind() == Tree.Kind.EXPRESSION_STATEMENT || parent.getKind() == Tree.Kind.RETURN) {
            ExpressionTree et = node.getEnclosingExpression();
            if (et != null) {
                if (el.getModifiers().contains(Modifier.STATIC) || !isMeaninglessQualifier(new TreePath(getCurrentPath().getParentPath(), et))) {
                    return t;
                }
            }
            foundConstructorReferenceCandidate = true;
        }
    }
    return t;
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
@Override
protected void performRewrite(TransformationContext ctx) {
    WorkingCopy copy = ctx.getWorkingCopy();
    TreePath tp = ctx.getPath();
    if (tp.getLeaf().getKind() != Tree.Kind.NEW_CLASS) {
        //XXX: warning
        return ;
    }

    NewClassTree nct = (NewClassTree) tp.getLeaf();

    if (nct.getIdentifier().getKind() != Tree.Kind.PARAMETERIZED_TYPE) {
        //XXX: warning
        return ;
    }

    TreeMaker make = copy.getTreeMaker();
    ParameterizedTypeTree ptt = (ParameterizedTypeTree) nct.getIdentifier();
    ParameterizedTypeTree nue = make.ParameterizedType(ptt.getType(), Collections.<Tree>emptyList());

    copy.rewrite(ptt, nue);
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
@TriggerPatterns({
    @TriggerPattern("new $clazz($params$) { $method; }") //NOI18N
})
@NbBundle.Messages("MSG_AnonymousConvertibleToLambda=This anonymous inner class creation can be turned into a lambda expression.")
public static ErrorDescription computeAnnonymousToLambda(HintContext ctx) {
    ClassTree clazz = ((NewClassTree) ctx.getPath().getLeaf()).getClassBody();
    ConvertToLambdaPreconditionChecker preconditionChecker =
            new ConvertToLambdaPreconditionChecker(ctx.getPath(), ctx.getInfo());
    if (!preconditionChecker.passesFatalPreconditions()) {
        return null;
    }

    FixImpl fix = new FixImpl(ctx.getInfo(), ctx.getPath(), false);
    if (ctx.getPreferences().getBoolean(KEY_PREFER_MEMBER_REFERENCES, DEF_PREFER_MEMBER_REFERENCES)
            && (preconditionChecker.foundMemberReferenceCandidate() || preconditionChecker.foundConstructorReferenceCandidate())) {
        return ErrorDescriptionFactory.forTree(ctx, ((NewClassTree) ctx.getPath().getLeaf()).getIdentifier(), Bundle.MSG_AnonymousConvertibleToLambda(),
                new FixImpl(ctx.getInfo(), ctx.getPath(), true).toEditorFix(), fix.toEditorFix());
    }
    return ErrorDescriptionFactory.forTree(ctx, ((NewClassTree) ctx.getPath().getLeaf()).getIdentifier(), 
            Bundle.MSG_AnonymousConvertibleToLambda(), fix.toEditorFix());
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
@Override
protected void performRewrite(TransformationContext ctx) throws Exception {
    TreePath p = ctx.getPath();
    if (p.getLeaf().getKind() != Tree.Kind.NEW_CLASS) {
        return;
    }
    NewClassTree origNct = (NewClassTree)p.getLeaf();
    if (origNct.getArguments().size() != 1) {
        return;
    }
    NewClassTree nct = GeneratorUtilities.get(ctx.getWorkingCopy()).importComments(origNct, ctx.getWorkingCopy().getCompilationUnit());
    ExpressionTree charArg = nct.getArguments().get(0);
    TreeMaker mk = ctx.getWorkingCopy().getTreeMaker();
    
    ExpressionTree newExpr = mk.NewClass(nct.getEnclosingExpression(), (List<ExpressionTree>)nct.getTypeArguments(), nct.getIdentifier(), 
            Collections.<ExpressionTree>emptyList(), nct.getClassBody());

    Tree replace = mk.MethodInvocation(
            Collections.<ExpressionTree>emptyList(), 
            mk.MemberSelect(newExpr, "append"), // NOI18N
            Collections.singletonList(charArg));
    ctx.getWorkingCopy().rewrite(nct, replace);
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
@Override
public Boolean visitNewClass(NewClassTree node, Void p) {
    TypeMirror tm = ci.getTrees().getTypeMirror(getCurrentPath());
    if (tm == null || tm.getKind() != TypeKind.DECLARED) {
        return false;
    }
    TypeElement el = (TypeElement)((DeclaredType)tm).asElement();
    if (el == null) {
        return false;
    }
    Name n = el.getQualifiedName();
    boolean res = n.contentEquals("java.lang.StringBuilder") || n.contentEquals("java.lang.StringBuffer"); // NOI18N
    // check if there is some initial contents
    if (node.getArguments().size() == 1 && 
            Utilities.isJavaString(ci, ci.getTrees().getTypeMirror(new TreePath(getCurrentPath(), node.getArguments().get(0))))) {
        hasContents = true;
    }
    return res;
}
 

import com.sun.source.tree.NewClassTree; //导入依赖的package包/类
private ExpressionTree rewriteNewClass(TreePath p) {
    ExpressionTree expr = (ExpressionTree) p.getLeaf();
    NewClassTree nct = (NewClassTree) expr;
    Element el = wc.getTrees().getElement(p);
    if (el != null && el.getKind() == ElementKind.CONSTRUCTOR) {
        ExecutableElement ee = (ExecutableElement) el;
        if (ee.getParameters().isEmpty()) {
            // ctor without parameters, remove
            return null;
        }
        TypeMirror argType = ee.getParameters().get(0).asType();
        if (argType.getKind() == TypeKind.DECLARED) {
            ExpressionTree a = nct.getArguments().get(0);
            gu.copyComments(expr, a, true);
            gu.copyComments(expr, a, false);
            wc.rewrite(expr, a);
            return a;
        }
        return null;
    }
    return expr;
}