1 /* 2 * Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @summary Checks that the interaction between annotated and unannotated 27 * array levels in array creation trees 28 * @modules jdk.compiler/com.sun.tools.javac.api 29 * jdk.compiler/com.sun.tools.javac.file 30 * jdk.compiler/com.sun.tools.javac.tree 31 * jdk.compiler/com.sun.tools.javac.util 32 */ 33 34 import com.sun.tools.javac.api.JavacTool; 35 import com.sun.tools.javac.tree.JCTree.JCNewArray; 36 import java.lang.annotation.*; 37 import java.io.File; 38 import java.io.PrintWriter; 39 import java.util.Arrays; 40 import java.util.List; 41 import java.util.Map; 42 import java.util.HashMap; 43 import javax.tools.JavaFileManager; 44 import javax.tools.JavaFileObject; 45 import com.sun.source.tree.*; 46 import com.sun.source.util.JavacTask; 47 import com.sun.source.util.TreeScanner; 48 import javax.tools.StandardJavaFileManager; 49 50 51 public class ArrayCreationTree { main(String[] args)52 public static void main(String[] args) throws Exception { 53 PrintWriter out = new PrintWriter(System.out, true); 54 JavacTool tool = JavacTool.create(); 55 try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) { 56 File testSrc = new File(System.getProperty("test.src")); 57 Iterable<? extends JavaFileObject> f = 58 fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, "ArrayCreationTree.java"))); 59 JavacTask task = tool.getTask(out, fm, null, null, null, f); 60 Iterable<? extends CompilationUnitTree> trees = task.parse(); 61 out.flush(); 62 63 Scanner s = new Scanner(); 64 for (CompilationUnitTree t: trees) 65 s.scan(t, null); 66 } 67 } 68 69 private static class Scanner extends TreeScanner<Void,Void> { 70 int foundAnnotations = 0; visitCompilationUnit(CompilationUnitTree node, Void ignore)71 public Void visitCompilationUnit(CompilationUnitTree node, Void ignore) { 72 super.visitCompilationUnit(node, ignore); 73 if (foundAnnotations != expectedAnnotations) { 74 throw new AssertionError("Expected " + expectedAnnotations + 75 " annotations but found: " + foundAnnotations); 76 } 77 return null; 78 } 79 testAnnotations(List<? extends AnnotationTree> annos, int found)80 private void testAnnotations(List<? extends AnnotationTree> annos, int found) { 81 if (annos.isEmpty()) return; 82 83 String annotation = annos.get(0).toString(); 84 foundAnnotations++; 85 86 int expected = -1; 87 if (annotation.equals("@A")) 88 expected = 0; 89 else if (annotation.equals("@B")) 90 expected = 1; 91 else if (annotation.equals("@C")) 92 expected = 2; 93 else 94 throw new AssertionError("found an unexpected annotation: " + annotation); 95 if (found != expected) { 96 throw new AssertionError("Unexpected found length" + 97 ", found " + found + " but expected " + expected); 98 } 99 } 100 visitAnnotatedType(AnnotatedTypeTree node, Void ignore)101 public Void visitAnnotatedType(AnnotatedTypeTree node, Void ignore) { 102 testAnnotations(node.getAnnotations(), arrayLength(node)); 103 return super.visitAnnotatedType(node, ignore); 104 } 105 visitNewArray(NewArrayTree node, Void ignore)106 public Void visitNewArray(NewArrayTree node, Void ignore) { 107 // the Tree API hasn't been updated to expose annotations yet 108 JCNewArray newArray = (JCNewArray)node; 109 int totalLength = node.getDimensions().size() 110 + arrayLength(node.getType()) 111 + ((newArray.getInitializers() != null) ? 1 : 0); 112 testAnnotations(newArray.annotations, totalLength); 113 int count = 0; 114 for (List<? extends AnnotationTree> annos : newArray.dimAnnotations) { 115 testAnnotations(annos, totalLength - count); 116 count++; 117 } 118 return super.visitNewArray(node, ignore); 119 } 120 arrayLength(Tree tree)121 private int arrayLength(Tree tree) { 122 // TODO: the tree is null when called with node.getType(). Why? 123 if (tree==null) return -1; 124 switch (tree.getKind()) { 125 case ARRAY_TYPE: 126 return 1 + arrayLength(((ArrayTypeTree)tree).getType()); 127 case ANNOTATED_TYPE: 128 return arrayLength(((AnnotatedTypeTree)tree).getUnderlyingType()); 129 default: 130 return 0; 131 } 132 } 133 } 134 135 static int expectedAnnotations = 21; 136 137 Object a1 = new @A Object @C [2] @B [1]; 138 Object b1 = new @A Object @C [2] @B [ ]; 139 Object c1 = new @A Object @C [ ] @B [ ] { }; 140 141 Object a2 = new @A Object @C [2] [1]; 142 Object b2 = new @A Object @C [2] [ ]; 143 Object c2 = new @A Object @C [ ] [ ] { }; 144 145 Object a3 = new @A Object [2] @B [1]; 146 Object b3 = new @A Object [2] @B [ ]; 147 Object c3 = new @A Object [ ] @B [ ] { }; 148 149 @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER}) 150 @interface A {} 151 @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER}) 152 @interface B {} 153 @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER}) 154 @interface C {} 155 156 } 157