├── assets ├── mirror.png └── mirror.svg ├── .gitignore ├── src ├── main │ └── java │ │ └── mx │ │ └── kenzie │ │ └── mirror │ │ ├── ClassProvider.java │ │ ├── Accessor.java │ │ ├── MethodCache.java │ │ ├── ConstructorAccessor.java │ │ ├── MethodAccessor.java │ │ ├── FieldAccessor.java │ │ ├── Bootstrap.java │ │ ├── InlineMimicGenerator.java │ │ ├── InternalAccessProvider.java │ │ ├── IntrinsicMimicGenerator.java │ │ ├── Mirror.java │ │ ├── DarkGlass.java │ │ └── LookingGlass.java └── test │ └── java │ └── mx │ └── kenzie │ └── mirror │ └── test │ ├── ConstructorAccessorTest.java │ ├── BasicTest.java │ ├── MagicMirrorTest.java │ ├── FieldAccessorTest.java │ ├── MethodAccessorTest.java │ ├── InternalAccessTest.java │ └── StandardBenchmarks.java ├── CITATION.cff ├── LICENSE.md ├── pom.xml └── README.md /assets/mirror.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Moderocky/Mirror/HEAD/assets/mirror.png -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Project exclude paths 2 | /target/ 3 | .DS_Store 4 | 5 | .idea/ 6 | 7 | *.iml 8 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/ClassProvider.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | public interface ClassProvider { 4 | 5 | Class loadClass(Class target, String name, byte[] bytes); 6 | 7 | } 8 | -------------------------------------------------------------------------------- /CITATION.cff: -------------------------------------------------------------------------------- 1 | cff-version: 1.2.0 2 | message: "If you use this software, please cite it as below." 3 | authors: 4 | - family-names: "Scott" 5 | given-names: "Mackenzie" 6 | title: "Mirror" 7 | version: 5.0.0 8 | date-released: 2022-06-01 9 | url: "https://github.com/Moderocky/Mirror" 10 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/Accessor.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | public interface Accessor { 4 | 5 | int getModifiers(); 6 | 7 | boolean isStatic(); 8 | 9 | boolean isDynamicAccess(); 10 | 11 | void setTarget(Object object); 12 | 13 | Object reflect(); 14 | 15 | Class getTargetType(); 16 | 17 | } 18 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2022 Kenzie 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/MethodCache.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | import mx.kenzie.mimic.MethodErasure; 4 | 5 | import java.util.HashMap; 6 | import java.util.LinkedHashMap; 7 | import java.util.Map; 8 | import java.util.concurrent.ConcurrentHashMap; 9 | 10 | public class MethodCache { 11 | 12 | protected final Map> map; 13 | 14 | protected MethodCache(Map> map) { 15 | this.map = map; 16 | } 17 | 18 | public static MethodCache direct() { 19 | return new MethodCache(new HashMap<>()); 20 | } 21 | 22 | public static MethodCache concurrent() { 23 | return new MethodCache(new ConcurrentHashMap<>()); 24 | } 25 | 26 | public static MethodCache linked() { 27 | return new MethodCache(new LinkedHashMap<>()); 28 | } 29 | 30 | public void cache(MethodErasure erasure, MethodAccessor accessor) { 31 | this.map.put(erasure, accessor); 32 | } 33 | 34 | public MethodAccessor get(MethodErasure erasure) { 35 | return this.map.get(erasure); 36 | } 37 | 38 | public boolean has(MethodErasure erasure) { 39 | return this.map.containsKey(erasure); 40 | } 41 | 42 | } 43 | -------------------------------------------------------------------------------- /src/test/java/mx/kenzie/mirror/test/ConstructorAccessorTest.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror.test; 2 | 3 | import mx.kenzie.mirror.ConstructorAccessor; 4 | import mx.kenzie.mirror.Mirror; 5 | import org.junit.BeforeClass; 6 | import org.junit.Test; 7 | 8 | public class ConstructorAccessorTest { 9 | 10 | @BeforeClass 11 | public static void warmUp() { 12 | final Mirror mirror = Mirror.of(TestConstructor.class); 13 | mirror.constructor(int.class, String.class).invoke(0, null); 14 | mirror.constructor(int.class, int.class).invoke(0, 1); 15 | } 16 | 17 | @Test 18 | public void dynamic() { 19 | final ConstructorAccessor constructor = Mirror.of(TestConstructor.class) 20 | .constructor(int.class, String.class); 21 | final Object object = constructor.newInstance(1, "hi"); 22 | assert object instanceof TestConstructor; 23 | } 24 | 25 | @Test 26 | public void normal() { 27 | final ConstructorAccessor constructor = Mirror.of(TestConstructor.class).constructor(int.class, int.class); 28 | final Object object = constructor.newInstance(1, 2); 29 | assert object instanceof TestConstructor; 30 | } 31 | 32 | public static class TestConstructor { 33 | 34 | public TestConstructor(int a, int b) { 35 | 36 | } 37 | 38 | private TestConstructor(int a, String b) { 39 | 40 | } 41 | 42 | } 43 | 44 | } 45 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/ConstructorAccessor.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | import java.lang.reflect.Constructor; 4 | import java.lang.reflect.Modifier; 5 | 6 | public interface ConstructorAccessor extends Accessor, ExecutableAccessor> { 7 | 8 | default Type newInstance(Object... arguments) { 9 | return this.invoke(arguments); 10 | } 11 | 12 | Type invoke(Object... arguments); 13 | 14 | Constructor reflect(); 15 | 16 | Class getTargetType(); 17 | 18 | Object getTarget(); 19 | 20 | abstract class ConstructorAccessorImpl implements ConstructorAccessor { 21 | 22 | protected final Class targetType; 23 | public Constructor handle; 24 | protected int modifiers; 25 | protected boolean dynamic; 26 | protected Object target; 27 | 28 | public ConstructorAccessorImpl(Type target) { 29 | this.target = target; 30 | this.targetType = target.getClass(); 31 | } 32 | 33 | protected void verifyArray(Object[] objects, int length) { 34 | if (objects.length < length) 35 | throw new IllegalArgumentException(""); 36 | } 37 | 38 | @Override 39 | public int getModifiers() { 40 | return modifiers; 41 | } 42 | 43 | @Override 44 | public boolean isStatic() { 45 | return Modifier.isStatic(modifiers); 46 | } 47 | 48 | @Override 49 | public boolean isDynamicAccess() { 50 | return dynamic; 51 | } 52 | 53 | public Constructor reflect() { 54 | return (Constructor) handle; 55 | } 56 | 57 | @Override 58 | public Object getTarget() { 59 | return target; 60 | } 61 | 62 | @Override 63 | public void setTarget(Object target) { 64 | this.target = target; 65 | } 66 | 67 | @Override 68 | public Class getTargetType() { 69 | return targetType; 70 | } 71 | } 72 | 73 | } 74 | -------------------------------------------------------------------------------- /src/test/java/mx/kenzie/mirror/test/BasicTest.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror.test; 2 | 3 | import mx.kenzie.mirror.FieldAccessor; 4 | import mx.kenzie.mirror.MethodAccessor; 5 | import mx.kenzie.mirror.Mirror; 6 | import org.junit.Test; 7 | 8 | import java.io.PrintStream; 9 | 10 | public class BasicTest { 11 | 12 | @SuppressWarnings("all") 13 | private String word = "Hello"; 14 | 15 | private int blob() { 16 | return 6; 17 | } 18 | 19 | public int blob2() { 20 | return 5; 21 | } 22 | 23 | @Test 24 | public void test() { 25 | final Mirror mirror = Mirror.of(this); 26 | final FieldAccessor field = mirror.field("word"); 27 | assert field.get().equals("Hello"); 28 | field.set("Goodbye"); 29 | final String string = field.get(); 30 | assert string.equals("Goodbye"); 31 | } 32 | 33 | public void examples() { 34 | final MethodAccessor method = Mirror.of(System.out).method("println", String.class); 35 | method.invoke("hello"); 36 | 37 | Mirror.of(System.out) 38 | .method("println", String.class) 39 | .invoke("hello"); 40 | 41 | long value = (long) Mirror.of(System.class) 42 | .method("nanoTime") 43 | .invoke(); 44 | assert value > -1; 45 | 46 | final FieldAccessor field = Mirror.of(System.class).field("out"); 47 | field.get().println("hello"); 48 | 49 | Mirror.of(System.class) 50 | .field("out") 51 | .mirror() 52 | .method("println", int.class) 53 | .invoke(2); 54 | 55 | Mirror.of(this) 56 | .field("word") 57 | .set("bean"); 58 | 59 | Mirror.of(ConstructorAccessorTest.TestConstructor.class) 60 | .constructor(int.class, int.class) 61 | .newInstance(0, 0); 62 | 63 | interface Test { 64 | int blob(); 65 | } 66 | final Test test = Mirror.of(this) 67 | .magic(Test.class); 68 | assert test.blob() == 6; 69 | 70 | } 71 | 72 | } 73 | -------------------------------------------------------------------------------- /src/test/java/mx/kenzie/mirror/test/MagicMirrorTest.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror.test; 2 | 3 | import mx.kenzie.mirror.Mirror; 4 | import org.junit.Test; 5 | 6 | public class MagicMirrorTest { 7 | 8 | public static int a = 1; 9 | @SuppressWarnings("all") 10 | private static int b = 2; 11 | public int c = 3; 12 | @SuppressWarnings("all") 13 | private int d = 4; 14 | 15 | private static int bean(int i) { 16 | return i + 2; 17 | } 18 | 19 | public static int box(long l) { 20 | return (int) l; 21 | } 22 | 23 | private int blob() { 24 | return 6; 25 | } 26 | 27 | public String name() { 28 | return "Hello"; 29 | } 30 | 31 | @Test 32 | public void basic() { 33 | interface Test { 34 | int blob(); 35 | 36 | int bean(int i); 37 | 38 | String name(); 39 | } 40 | final Test test = Mirror.of(this).magic(Test.class); 41 | assert test != null; 42 | assert test.blob() == 6; 43 | assert test.bean(3) == 5; 44 | assert test.name().equals("Hello"); 45 | } 46 | 47 | @Test 48 | public void intrinsic() { 49 | interface Test { 50 | int blob(); 51 | 52 | int bean(int i); 53 | 54 | int box(long l); 55 | 56 | String name(); 57 | 58 | int $a(); 59 | 60 | void $a(int i); 61 | 62 | int $b(); 63 | 64 | void $b(int i); 65 | 66 | int $c(); 67 | 68 | void $c(int i); 69 | 70 | int $d(); 71 | 72 | void $d(int i); 73 | } 74 | final Test test = Mirror.of(this).magicIntrinsic(Test.class); 75 | assert test != null; 76 | assert test.blob() == 6; 77 | assert test.bean(3) == 5; 78 | assert test.name().equals("Hello"); 79 | assert test.box(10L) == 10; 80 | test.$a(2); 81 | test.$b(2); 82 | test.$c(2); 83 | test.$d(2); 84 | assert test.$a() == 2; 85 | assert test.$b() == 2; 86 | assert test.$c() == 2; 87 | assert test.$d() == 2; 88 | } 89 | 90 | 91 | } 92 | -------------------------------------------------------------------------------- /src/test/java/mx/kenzie/mirror/test/FieldAccessorTest.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror.test; 2 | 3 | import mx.kenzie.mirror.FieldAccessor; 4 | import mx.kenzie.mirror.Mirror; 5 | import org.junit.BeforeClass; 6 | import org.junit.Test; 7 | 8 | public class FieldAccessorTest { 9 | 10 | public static int b; 11 | private static int d; 12 | public int a; 13 | private int c; 14 | 15 | @BeforeClass 16 | public static void warmUp() { 17 | final Mirror mirror = Mirror.of(new FieldAccessorTest()); 18 | mirror.field("a").get(); 19 | mirror.field("b").get(); 20 | mirror.field("c").get(); 21 | mirror.field("d").get(); 22 | } 23 | 24 | @Test 25 | public void publicDynamic() { 26 | final FieldAccessor accessor = Mirror.of(this).field("a"); 27 | assert accessor != null; 28 | assert !accessor.isStatic(); 29 | assert !accessor.isDynamicAccess(); 30 | accessor.set(3); 31 | assert (int) accessor.get() == 3; 32 | } 33 | 34 | @Test 35 | public void publicStatic() { 36 | final FieldAccessor accessor = Mirror.of(this).field("b"); 37 | assert accessor != null; 38 | assert accessor.isStatic(); 39 | assert !accessor.isDynamicAccess(); 40 | accessor.set(66); 41 | assert (int) accessor.get() == 66; 42 | try { 43 | assert Mirror.of(System.class).field("out") != null; 44 | } catch (Throwable ex) { 45 | ex.printStackTrace(); 46 | ex.getCause().printStackTrace(); 47 | } 48 | } 49 | 50 | @Test 51 | public void privateDynamic() { 52 | final FieldAccessor accessor = Mirror.of(this).field("c"); 53 | assert accessor != null; 54 | assert !accessor.isStatic(); 55 | assert accessor.isDynamicAccess(); 56 | accessor.set(14); 57 | assert (int) accessor.get() == 14; 58 | } 59 | 60 | @Test 61 | public void privateStatic() { 62 | final FieldAccessor accessor = Mirror.of(this).field("d"); 63 | assert accessor != null; 64 | assert accessor.isStatic(); 65 | assert accessor.isDynamicAccess(); 66 | accessor.set(22); 67 | assert (int) accessor.get() == 22; 68 | } 69 | 70 | } 71 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/MethodAccessor.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | import java.lang.reflect.Executable; 4 | import java.lang.reflect.Method; 5 | import java.lang.reflect.Modifier; 6 | 7 | public interface MethodAccessor extends ExecutableAccessor, Accessor { 8 | 9 | Return invoke(Object... arguments); 10 | 11 | Method reflect(); 12 | 13 | Object getTarget(); 14 | 15 | Class getTargetType(); 16 | 17 | abstract class MethodAccessorImpl implements MethodAccessor { 18 | 19 | protected final Class targetType; 20 | public Method handle; 21 | protected int modifiers; 22 | protected boolean dynamic; 23 | protected Object target; 24 | 25 | public MethodAccessorImpl(Thing target) { 26 | this.target = target; 27 | this.targetType = target.getClass(); 28 | } 29 | 30 | protected void verifyArray(Object[] objects, int length) { 31 | if (objects.length < length) 32 | throw new IllegalArgumentException("Parameter count " + objects.length + " is lower than required " + length); 33 | } 34 | 35 | @Override 36 | public int getModifiers() { 37 | return modifiers; 38 | } 39 | 40 | @Override 41 | public boolean isStatic() { 42 | return Modifier.isStatic(modifiers); 43 | } 44 | 45 | @Override 46 | public boolean isDynamicAccess() { 47 | return dynamic; 48 | } 49 | 50 | @Override 51 | public Method reflect() { 52 | return handle; 53 | } 54 | 55 | @Override 56 | public Object getTarget() { 57 | return target; 58 | } 59 | 60 | @Override 61 | public void setTarget(Object target) { 62 | if (!targetType.isAssignableFrom(target.getClass())) 63 | throw new IllegalArgumentException("New target must be of a compatible type."); 64 | this.target = target; 65 | } 66 | 67 | @Override 68 | public Class getTargetType() { 69 | return targetType; 70 | } 71 | } 72 | 73 | } 74 | 75 | interface ExecutableAccessor extends Accessor { 76 | 77 | Return invoke(Object... arguments); 78 | 79 | Handle reflect(); 80 | 81 | } 82 | -------------------------------------------------------------------------------- /src/test/java/mx/kenzie/mirror/test/MethodAccessorTest.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror.test; 2 | 3 | import mx.kenzie.mirror.MethodAccessor; 4 | import mx.kenzie.mirror.Mirror; 5 | import org.junit.BeforeClass; 6 | import org.junit.Test; 7 | 8 | public class MethodAccessorTest { 9 | 10 | private static int foo(int i) { 11 | return i + 1; 12 | } 13 | 14 | public static int foo(int i, int j) { 15 | return i + j; 16 | } 17 | 18 | @BeforeClass 19 | public static void warmUp() { 20 | final Mirror mirror = Mirror.of(new MethodAccessorTest()); 21 | mirror.method("foo", int.class).invoke(0); 22 | mirror.method("foo", int.class, int.class).invoke(0, 0); 23 | mirror.method("bar", int.class).invoke(0); 24 | mirror.method("bar", int.class, int.class).invoke(0, 0); 25 | } 26 | 27 | private int bar(int i) { 28 | return i + 2; 29 | } 30 | 31 | public int bar(int i, int j) { 32 | return i + j; 33 | } 34 | 35 | private int test() { 36 | return 1; 37 | } 38 | 39 | @Test 40 | public void privateDynamic() { 41 | final MethodAccessor accessor = Mirror.of(this).method("bar", int.class); 42 | assert accessor != null; 43 | assert !accessor.isStatic(); 44 | assert accessor.isDynamicAccess(); 45 | assert (int) accessor.invoke(2) == 4; 46 | } 47 | 48 | @Test 49 | public void privateStatic() { 50 | final MethodAccessor accessor = Mirror.of(MethodAccessorTest.class).method("foo", int.class); 51 | assert accessor != null; 52 | assert accessor.isStatic(); 53 | assert accessor.isDynamicAccess(); 54 | assert (int) accessor.invoke(2) == 3; 55 | } 56 | 57 | @Test 58 | public void publicDynamic() { 59 | final MethodAccessor accessor = Mirror.of(this).method("bar", int.class, int.class); 60 | assert accessor != null; 61 | assert !accessor.isStatic(); 62 | assert !accessor.isDynamicAccess(); 63 | assert (int) accessor.invoke(2, 6) == 8; 64 | } 65 | 66 | @Test 67 | public void publicStatic() { 68 | final MethodAccessor accessor = Mirror.of(this).method("foo", int.class, int.class); 69 | assert accessor != null; 70 | assert accessor.isStatic(); 71 | assert !accessor.isDynamicAccess(); 72 | assert (int) accessor.invoke(2, 3) == 5; 73 | } 74 | 75 | @Test 76 | public void noArgs() { 77 | final MethodAccessor accessor = Mirror.of(this).method("test"); 78 | assert accessor.invoke() == 1; 79 | } 80 | 81 | } 82 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/FieldAccessor.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | import java.lang.reflect.Field; 4 | import java.lang.reflect.Modifier; 5 | 6 | public interface FieldAccessor extends Accessor { 7 | 8 | void set(Object value); 9 | 10 | Field reflect(); 11 | 12 | Class getTargetType(); 13 | 14 | default Mirror mirror() { 15 | return Mirror.of(get()); 16 | } 17 | 18 | Type get(); 19 | 20 | Object getTarget(); 21 | 22 | abstract class FieldAccessorImpl implements FieldAccessor { 23 | 24 | protected final Class targetType; 25 | public Field handle; 26 | protected int modifiers; 27 | protected boolean dynamic; 28 | protected Class type; 29 | protected Object target; 30 | 31 | public FieldAccessorImpl(Thing target) { 32 | this.target = target; 33 | this.targetType = target.getClass(); 34 | } 35 | 36 | @Override 37 | public int getModifiers() { 38 | return modifiers; 39 | } 40 | 41 | @Override 42 | public boolean isStatic() { 43 | return Modifier.isStatic(modifiers); 44 | } 45 | 46 | @Override 47 | public boolean isDynamicAccess() { 48 | return dynamic; 49 | } 50 | 51 | public Field reflect() { 52 | return handle; 53 | } 54 | 55 | @Override 56 | public Object getTarget() { 57 | return target; 58 | } 59 | 60 | @Override 61 | public void setTarget(Object target) { 62 | if (!targetType.isAssignableFrom(target.getClass())) 63 | throw new IllegalArgumentException("New target must be of a compatible type."); 64 | this.target = target; 65 | } 66 | 67 | @Override 68 | public Class getTargetType() { 69 | return targetType; 70 | } 71 | } 72 | 73 | class RelayedFieldAccessor extends FieldAccessorImpl { 74 | 75 | private final MethodAccessor getter; 76 | private final MethodAccessor setter; 77 | 78 | public RelayedFieldAccessor(MethodAccessor getter, MethodAccessor setter) { 79 | super((Thing) Object.class); // prevents the exception being thrown by super 80 | this.getter = getter; 81 | this.setter = setter; 82 | } 83 | 84 | @Override 85 | public Type get() { 86 | return getter.invoke(); 87 | } 88 | 89 | @Override 90 | public void set(Object value) { 91 | setter.invoke(value); 92 | } 93 | 94 | } 95 | 96 | } 97 | -------------------------------------------------------------------------------- /src/test/java/mx/kenzie/mirror/test/InternalAccessTest.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror.test; 2 | 3 | import mx.kenzie.mirror.FieldAccessor; 4 | import mx.kenzie.mirror.MethodAccessor; 5 | import mx.kenzie.mirror.Mirror; 6 | import org.junit.Test; 7 | 8 | import java.io.Serializable; 9 | 10 | public class InternalAccessTest { 11 | 12 | @SuppressWarnings("all") 13 | private static int b = 5; 14 | @SuppressWarnings("all") 15 | private int a = 3; 16 | 17 | private int number() { 18 | return 2; 19 | } 20 | 21 | @Test 22 | public void accessJavaInternals() throws Throwable { 23 | final Class secrets = Class.forName("jdk.internal.access.SharedSecrets", false, ClassLoader.getSystemClassLoader()); 24 | final MethodAccessor accessor = Mirror.of(secrets) 25 | .unsafe() 26 | .method("getJavaLangAccess"); 27 | final Object jla = accessor.invoke(); 28 | assert jla != null; 29 | } 30 | 31 | @Test 32 | public void accessPrivateField() { 33 | { 34 | final MethodAccessor[]> accessor = Mirror.of(Class.class) 35 | .unsafe() 36 | .method("getInterfaces0"); 37 | final Class[] interfaces = accessor.invoke(); 38 | assert interfaces[0] == Serializable.class; 39 | } 40 | 41 | { // check duplication doesn't occur 42 | final MethodAccessor[]> accessor = Mirror.of(Class.class) 43 | .unsafe() 44 | .method("getInterfaces0"); 45 | final Class[] interfaces = accessor.invoke(); 46 | assert interfaces[0] == Serializable.class; 47 | } 48 | 49 | } 50 | 51 | @Test 52 | public void accessUnnamed() { 53 | final MethodAccessor accessor = Mirror.of(this) 54 | .unsafe() 55 | .method("number"); 56 | assert accessor.invoke() == 2; 57 | } 58 | 59 | @Test 60 | public void accessUnnamedDynamicField() { 61 | final FieldAccessor accessor = Mirror.of(this) 62 | .unsafe() 63 | .field("a"); 64 | accessor.set(6); 65 | assert accessor.get() == 6; 66 | } 67 | 68 | @Test 69 | public void accessUnnamedStaticField() { 70 | final FieldAccessor accessor = Mirror.of(this) 71 | .unsafe() 72 | .field("b"); 73 | accessor.set(6); 74 | assert accessor.get() == 6; 75 | } 76 | 77 | @Test 78 | public void accessNamedStaticField() { 79 | final FieldAccessor accessor = Mirror.of(Class.class) 80 | .unsafe() 81 | .field("SYNTHETIC"); 82 | assert accessor.get() == 0x00001000; 83 | } 84 | 85 | } 86 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 4.0.0 6 | 7 | mx.kenzie 8 | mirror 9 | 5.0.5 10 | Mirror 11 | 12 | 13 | 17 14 | 17 15 | UTF-8 16 | 17 | 18 | 19 | ${project.name} 20 | 21 | 22 | org.apache.maven.plugins 23 | maven-compiler-plugin 24 | 3.8.0 25 | 26 | 17 27 | 17 28 | 29 | 30 | 31 | org.apache.maven.plugins 32 | maven-surefire-plugin 33 | 2.22.2 34 | 35 | 36 | 37 | 38 | src/main/resources 39 | true 40 | 41 | 42 | 43 | 44 | 45 | 46 | kenzie 47 | https://repo.kenzie.mx/releases 48 | 49 | 50 | 51 | 52 | 53 | kenzie 54 | https://repo.kenzie.mx/releases 55 | 56 | 57 | 58 | 59 | 60 | org.jetbrains 61 | annotations 62 | 22.0.0 63 | provided 64 | 65 | 66 | junit 67 | junit 68 | 4.13.2 69 | test 70 | 71 | 72 | org.openjdk.jol 73 | jol-core 74 | 0.16 75 | test 76 | 77 | 78 | org.openjdk.jmh 79 | jmh-core 80 | 1.32 81 | test 82 | 83 | 84 | org.openjdk.jmh 85 | jmh-generator-annprocess 86 | 1.32 87 | test 88 | 89 | 90 | mx.kenzie 91 | mimic 92 | 1.0.0 93 | provided 94 | 95 | 96 | org.ow2.asm 97 | asm 98 | 9.2 99 | compile 100 | 101 | 102 | 103 | 104 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/Bootstrap.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | import java.lang.invoke.*; 4 | 5 | public final class Bootstrap { 6 | 7 | public static CallSite bootstrap(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 8 | final MethodHandle handle = caller.findStatic(owner, name, type); 9 | return new ConstantCallSite(handle); 10 | } 11 | 12 | public static CallSite bootstrapPrivate(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 13 | final MethodHandle handle = MethodHandles.privateLookupIn(owner, caller).findStatic(owner, name, type); 14 | return new ConstantCallSite(handle); 15 | } 16 | 17 | public static CallSite bootstrapDynamic(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 18 | final MethodHandle handle; 19 | final MethodType end = type.dropParameterTypes(0, 1); 20 | handle = caller.findVirtual(owner, name, end); 21 | return new ConstantCallSite(handle); 22 | } 23 | 24 | public static CallSite bootstrapPrivateDynamic(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 25 | final MethodHandle handle; 26 | final MethodType end = type.dropParameterTypes(0, 1); 27 | handle = MethodHandles.privateLookupIn(owner, caller).findVirtual(owner, name, end); 28 | return new ConstantCallSite(handle); 29 | } 30 | 31 | public static CallSite bootstrapPrivateStaticFieldSetter(MethodHandles.Lookup caller, String name, MethodType type, Class owner) 32 | throws Exception { 33 | final MethodHandle handle = MethodHandles.privateLookupIn(owner, caller) 34 | .findStaticVarHandle(owner, name, type.parameterType(0)) 35 | .toMethodHandle(VarHandle.AccessMode.SET); 36 | return new ConstantCallSite(handle); 37 | } 38 | 39 | public static CallSite bootstrapPrivateStaticFieldGetter(MethodHandles.Lookup caller, String name, MethodType type, Class owner) 40 | throws Exception { 41 | final MethodHandle handle = MethodHandles.privateLookupIn(owner, caller) 42 | .findStaticVarHandle(owner, name, type.returnType()) 43 | .toMethodHandle(VarHandle.AccessMode.GET); 44 | return new ConstantCallSite(handle); 45 | } 46 | 47 | public static CallSite bootstrapFieldSetter(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 48 | final MethodHandle handle = caller.findStaticVarHandle(owner, name, type.parameterType(0)) 49 | .toMethodHandle(VarHandle.AccessMode.SET); 50 | return new ConstantCallSite(handle); 51 | } 52 | 53 | public static CallSite bootstrapFieldGetter(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 54 | final MethodHandle handle = caller.findStaticVarHandle(owner, name, type.returnType()) 55 | .toMethodHandle(VarHandle.AccessMode.GET); 56 | return new ConstantCallSite(handle); 57 | } 58 | 59 | public static CallSite bootstrapPrivateFieldSetter(MethodHandles.Lookup caller, String name, MethodType type, Class owner) 60 | throws Exception { 61 | final MethodHandle handle = MethodHandles.privateLookupIn(owner, caller) 62 | .findVarHandle(owner, name, type.parameterType(1)) 63 | .toMethodHandle(VarHandle.AccessMode.SET); 64 | return new ConstantCallSite(handle); 65 | } 66 | 67 | public static CallSite bootstrapPrivateFieldGetter(MethodHandles.Lookup caller, String name, MethodType type, Class owner) 68 | throws Exception { 69 | final MethodHandle handle = MethodHandles.privateLookupIn(owner, caller) 70 | .findVarHandle(owner, name, type.returnType()) 71 | .toMethodHandle(VarHandle.AccessMode.GET); 72 | return new ConstantCallSite(handle); 73 | } 74 | 75 | public static CallSite bootstrapDynamicConstructor(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 76 | final MethodHandle handle; 77 | final MethodType end = type.changeReturnType(void.class); 78 | handle = caller.findConstructor(owner, end); 79 | return new ConstantCallSite(handle); 80 | } 81 | 82 | public static CallSite bootstrapPrivateDynamicConstructor(MethodHandles.Lookup caller, String name, MethodType type, Class owner) throws Exception { 83 | final MethodHandle handle; 84 | final MethodType end = type.changeReturnType(void.class); 85 | handle = MethodHandles.privateLookupIn(owner, caller).findConstructor(owner, end); 86 | return new ConstantCallSite(handle); 87 | } 88 | 89 | } 90 | -------------------------------------------------------------------------------- /src/main/java/mx/kenzie/mirror/InlineMimicGenerator.java: -------------------------------------------------------------------------------- 1 | package mx.kenzie.mirror; 2 | 3 | import mx.kenzie.mimic.MimicGenerator; 4 | import org.objectweb.asm.FieldVisitor; 5 | import org.objectweb.asm.MethodVisitor; 6 | import org.objectweb.asm.Type; 7 | 8 | import java.lang.reflect.Method; 9 | import java.lang.reflect.Modifier; 10 | import java.util.ArrayList; 11 | import java.util.List; 12 | 13 | import static org.objectweb.asm.Opcodes.*; 14 | 15 | class InlineMimicGenerator extends MimicGenerator { 16 | 17 | protected final Mirror mirror; 18 | protected List> accessors = new ArrayList<>(); 19 | 20 | protected InlineMimicGenerator(String location, Class top, Mirror mirror) { 21 | super(location, top); 22 | this.mirror = mirror; 23 | } 24 | 25 | static String getStrictPackageName(Class top, Class... interfaces) { 26 | String namespace = "com.sun.proxy.mimic"; // Proxies get special treatment for going here so need to use this 27 | if (top != null && !Modifier.isPublic(top.getModifiers())) { 28 | namespace = top.getPackageName(); 29 | } 30 | for (Class place : interfaces) { 31 | if (!Modifier.isPublic(place.getModifiers())) { 32 | namespace = place.getPackageName(); 33 | } 34 | } 35 | return namespace; 36 | } 37 | 38 | public