TypeUniverse.java revision 9287:40bd4478a362 
1/*
2 * Copyright (c) 2013, 2014, 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 */
23package jdk.vm.ci.runtime.test;
24
25import static java.lang.reflect.Modifier.isFinal;
26import static java.lang.reflect.Modifier.isStatic;
27
28import java.io.Serializable;
29import java.lang.reflect.Array;
30import java.lang.reflect.Field;
31import java.lang.reflect.Method;
32import java.util.AbstractCollection;
33import java.util.AbstractList;
34import java.util.ArrayDeque;
35import java.util.ArrayList;
36import java.util.Collection;
37import java.util.Collections;
38import java.util.HashMap;
39import java.util.HashSet;
40import java.util.IdentityHashMap;
41import java.util.LinkedHashMap;
42import java.util.LinkedList;
43import java.util.List;
44import java.util.Map;
45import java.util.Queue;
46import java.util.Set;
47import java.util.TreeMap;
48import java.util.stream.Collectors;
49
50import jdk.vm.ci.meta.ConstantReflectionProvider;
51import jdk.vm.ci.meta.JavaConstant;
52import jdk.vm.ci.meta.JavaField;
53import jdk.vm.ci.meta.MetaAccessProvider;
54import jdk.vm.ci.meta.ResolvedJavaType;
55import jdk.vm.ci.meta.TrustedInterface;
56import jdk.vm.ci.runtime.JVMCI;
57
58import org.junit.Test;
59
60import sun.misc.Unsafe;
61
62//JaCoCo Exclude
63
64/**
65 * Context for type related tests.
66 */
67public class TypeUniverse {
68
69    public static final Unsafe unsafe;
70    public static final double JAVA_VERSION = Double.valueOf(System.getProperty("java.specification.version"));
71
72    public static final MetaAccessProvider metaAccess = JVMCI.getRuntime().getHostJVMCIBackend().getMetaAccess();
73    public static final ConstantReflectionProvider constantReflection = JVMCI.getRuntime().getHostJVMCIBackend().getConstantReflection();
74    public static final Collection<Class<?>> classes = new HashSet<>();
75    public static final Set<ResolvedJavaType> javaTypes;
76    public static final Map<Class<?>, Class<?>> arrayClasses = new HashMap<>();
77
78    private static List<ConstantValue> constants;
79
80    public class InnerClass {
81
82    }
83
84    public static class InnerStaticClass {
85
86    }
87
88    public static final class InnerStaticFinalClass {
89
90    }
91
92    private class PrivateInnerClass {
93
94    }
95
96    protected class ProtectedInnerClass {
97
98    }
99
100    static {
101        Unsafe theUnsafe = null;
102        try {
103            theUnsafe = Unsafe.getUnsafe();
104        } catch (Exception e) {
105            try {
106                Field theUnsafeField = Unsafe.class.getDeclaredField("theUnsafe");
107                theUnsafeField.setAccessible(true);
108                theUnsafe = (Unsafe) theUnsafeField.get(null);
109            } catch (Exception e1) {
110                throw (InternalError) new InternalError("unable to initialize unsafe").initCause(e1);
111            }
112        }
113        unsafe = theUnsafe;
114
115        Class<?>[] initialClasses = {void.class, boolean.class, byte.class, short.class, char.class, int.class, float.class, long.class, double.class, Object.class, Class.class, boolean[].class,
116                        byte[].class, short[].class, char[].class, int[].class, float[].class, long[].class, double[].class, Object[].class, Class[].class, List[].class, boolean[][].class,
117                        byte[][].class, short[][].class, char[][].class, int[][].class, float[][].class, long[][].class, double[][].class, Object[][].class, Class[][].class, List[][].class,
118                        ClassLoader.class, String.class, Serializable.class, Cloneable.class, Test.class, TestMetaAccessProvider.class, List.class, Collection.class, Map.class, Queue.class,
119                        HashMap.class, LinkedHashMap.class, IdentityHashMap.class, AbstractCollection.class, AbstractList.class, ArrayList.class, TrustedInterface.class, InnerClass.class,
120                        InnerStaticClass.class, InnerStaticFinalClass.class, PrivateInnerClass.class, ProtectedInnerClass.class};
121        for (Class<?> c : initialClasses) {
122            addClass(c);
123        }
124
125        javaTypes = Collections.unmodifiableSet(classes.stream().map(c -> metaAccess.lookupJavaType(c)).collect(Collectors.toSet()));
126    }
127
128    static class ConstantsUniverse {
129        static final Object[] ARRAYS = classes.stream().map(c -> c != void.class && !c.isArray() ? Array.newInstance(c, 42) : null).filter(o -> o != null).collect(Collectors.toList()).toArray();
130        static final Object CONST1 = new ArrayList<>();
131        static final Object CONST2 = new ArrayList<>();
132        static final Object CONST3 = new IdentityHashMap<>();
133        static final Object CONST4 = new LinkedHashMap<>();
134        static final Object CONST5 = new TreeMap<>();
135        static final Object CONST6 = new ArrayDeque<>();
136        static final Object CONST7 = new LinkedList<>();
137        static final Object CONST8 = "a string";
138        static final Object CONST9 = 42;
139        static final Object CONST10 = String.class;
140        static final Object CONST11 = String[].class;
141    }
142
143    public static List<ConstantValue> constants() {
144        if (constants == null) {
145            List<ConstantValue> res = readConstants(JavaConstant.class);
146            res.addAll(readConstants(ConstantsUniverse.class));
147            constants = res;
148        }
149        return constants;
150    }
151
152    public static class ConstantValue {
153        public final String name;
154        public final JavaConstant value;
155        public final Object boxed;
156
157        public ConstantValue(String name, JavaConstant value, Object boxed) {
158            this.name = name;
159            this.value = value;
160            this.boxed = boxed;
161        }
162
163        @Override
164        public String toString() {
165            return name + "=" + value;
166        }
167
168        public String getSimpleName() {
169            return name.substring(name.lastIndexOf('.') + 1);
170        }
171    }
172
173    /**
174     * Reads the value of all {@code static final} fields from a given class into an array of
175     * {@link ConstantValue}s.
176     */
177    public static List<ConstantValue> readConstants(Class<?> fromClass) {
178        try {
179            List<ConstantValue> res = new ArrayList<>();
180            for (Field field : fromClass.getDeclaredFields()) {
181                if (isStatic(field.getModifiers()) && isFinal(field.getModifiers())) {
182                    JavaField javaField = metaAccess.lookupJavaField(field);
183                    Object boxed = field.get(null);
184                    if (boxed instanceof JavaConstant) {
185                        res.add(new ConstantValue(javaField.format("%H.%n"), (JavaConstant) boxed, boxed));
186                    } else {
187                        JavaConstant value = constantReflection.readConstantFieldValue(javaField, null);
188                        if (value != null) {
189                            res.add(new ConstantValue(javaField.format("%H.%n"), value, boxed));
190                            if (boxed instanceof Object[]) {
191                                Object[] arr = (Object[]) boxed;
192                                for (int i = 0; i < arr.length; i++) {
193                                    JavaConstant element = constantReflection.readArrayElement(value, i);
194                                    if (element != null) {
195                                        res.add(new ConstantValue(javaField.format("%H.%n[" + i + "]"), element, arr[i]));
196                                    }
197                                }
198                            }
199                        }
200                    }
201                }
202            }
203            return res;
204        } catch (Exception e) {
205            throw new AssertionError(e);
206        }
207    }
208
209    public synchronized Class<?> getArrayClass(Class<?> componentType) {
210        Class<?> arrayClass = arrayClasses.get(componentType);
211        if (arrayClass == null) {
212            arrayClass = Array.newInstance(componentType, 0).getClass();
213            arrayClasses.put(componentType, arrayClass);
214        }
215        return arrayClass;
216    }
217
218    public static int dimensions(Class<?> c) {
219        if (c.getComponentType() != null) {
220            return 1 + dimensions(c.getComponentType());
221        }
222        return 0;
223    }
224
225    private static void addClass(Class<?> c) {
226        if (classes.add(c)) {
227            if (c.getSuperclass() != null) {
228                addClass(c.getSuperclass());
229            }
230            for (Class<?> sc : c.getInterfaces()) {
231                addClass(sc);
232            }
233            for (Class<?> dc : c.getDeclaredClasses()) {
234                addClass(dc);
235            }
236            for (Method m : c.getDeclaredMethods()) {
237                addClass(m.getReturnType());
238                for (Class<?> p : m.getParameterTypes()) {
239                    addClass(p);
240                }
241            }
242
243            if (c != void.class && dimensions(c) < 2) {
244                Class<?> arrayClass = Array.newInstance(c, 0).getClass();
245                arrayClasses.put(c, arrayClass);
246                addClass(arrayClass);
247            }
248        }
249    }
250}
251