1 /*
2 * Copyright (c) 2009, 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 */
23 package jdk.vm.ci.meta;
24
25 import java.lang.annotation.Annotation;
26 import java.lang.reflect.AnnotatedElement;
27 import java.lang.reflect.Array;
28 import java.lang.reflect.InvocationTargetException;
29 import java.lang.reflect.Method;
30 import java.lang.reflect.Modifier;
31 import java.lang.reflect.Type;
32
33 /**
34 * Represents a resolved Java method. Methods, like fields and types, are resolved through
35 * {@link ConstantPool constant pools}.
36 */
37 public interface ResolvedJavaMethod extends JavaMethod, InvokeTarget, ModifiersProvider, AnnotatedElement {
38
39 /**
40 * Returns the bytecode of this method, if the method has code. The returned byte array does not
41 * contain breakpoints or non-Java bytecodes. This may return null if the
42 * {@link #getDeclaringClass() holder} is not {@link ResolvedJavaType#isLinked() linked}.
43 *
44 * The contained constant pool indices may not be the ones found in the original class file but
45 * they can be used with the JVMCI API (e.g. methods in {@link ConstantPool}).
46 *
47 * @return the bytecode of the method, or {@code null} if {@code getCodeSize() == 0} or if the
48 * code is not ready.
49 */
50 byte[] getCode();
51
52 /**
53 * Returns the size of the bytecode of this method, if the method has code. This is equivalent
54 * to {@link #getCode()}. {@code length} if the method has code.
55 *
56 * @return the size of the bytecode in bytes, or 0 if no bytecode is available
57 */
58 int getCodeSize();
59
60 /**
61 * Returns the {@link ResolvedJavaType} object representing the class or interface that declares
62 * this method.
422 *
423 * @param annotationClass the Class object corresponding to the annotation type
424 * @return the annotation of type {@code annotationClass} (if any) for each formal parameter
425 * present
426 */
427 @SuppressWarnings("unchecked")
428 default <T extends Annotation> T[] getParameterAnnotations(Class<T> annotationClass) {
429 Annotation[][] parameterAnnotations = getParameterAnnotations();
430 T[] result = (T[]) Array.newInstance(annotationClass, parameterAnnotations.length);
431 for (int i = 0; i < parameterAnnotations.length; i++) {
432 for (Annotation a : parameterAnnotations[i]) {
433 if (a.annotationType() == annotationClass) {
434 result[i] = annotationClass.cast(a);
435 }
436 }
437 }
438 return result;
439 }
440
441 /**
442 * Checks whether the method has bytecodes associated with it. Methods without bytecodes are
443 * either abstract or native methods.
444 *
445 * @return whether the definition of this method is Java bytecodes
446 */
447 default boolean hasBytecodes() {
448 return isConcrete() && !isNative();
449 }
450
451 /**
452 * Checks whether the method has a receiver parameter - i.e., whether it is not static.
453 *
454 * @return whether the method has a receiver parameter
455 */
456 default boolean hasReceiver() {
457 return !isStatic();
458 }
459
460 /**
461 * Determines if this method is {@link java.lang.Object#Object()}.
462 */
463 default boolean isJavaLangObjectInit() {
464 return getDeclaringClass().isJavaLangObject() && getName().equals("<init>");
465 }
466
467 SpeculationLog getSpeculationLog();
468
469 /**
470 *
471 * @param object
472 * @param args
473 * @throws InvocationTargetException
474 * @throws IllegalAccessException
475 */
476 default JavaConstant invoke(JavaConstant object, JavaConstant... args) throws InvocationTargetException, IllegalAccessException {
477 throw new InternalError("unimplemented");
478 }
479 }
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1 /*
2 * Copyright (c) 2009, 2019, 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 package jdk.vm.ci.meta;
24
25 import java.lang.annotation.Annotation;
26 import java.lang.reflect.AnnotatedElement;
27 import java.lang.reflect.Array;
28 import java.lang.reflect.Method;
29 import java.lang.reflect.Modifier;
30 import java.lang.reflect.Type;
31
32 /**
33 * Represents a resolved Java method. Methods, like fields and types, are resolved through
34 * {@link ConstantPool constant pools}.
35 */
36 public interface ResolvedJavaMethod extends JavaMethod, InvokeTarget, ModifiersProvider, AnnotatedElement {
37
38 /**
39 * Returns the bytecode of this method, if the method has code. The returned byte array does not
40 * contain breakpoints or non-Java bytecodes. This may return null if the
41 * {@linkplain #getDeclaringClass() declaring class} is not
42 * {@linkplain ResolvedJavaType#isLinked() linked}.
43 *
44 * The contained constant pool indices may not be the ones found in the original class file but
45 * they can be used with the JVMCI API (e.g. methods in {@link ConstantPool}).
46 *
47 * @return the bytecode of the method, or {@code null} if {@code getCodeSize() == 0} or if the
48 * code is not ready.
49 */
50 byte[] getCode();
51
52 /**
53 * Returns the size of the bytecode of this method, if the method has code. This is equivalent
54 * to {@link #getCode()}. {@code length} if the method has code.
55 *
56 * @return the size of the bytecode in bytes, or 0 if no bytecode is available
57 */
58 int getCodeSize();
59
60 /**
61 * Returns the {@link ResolvedJavaType} object representing the class or interface that declares
62 * this method.
422 *
423 * @param annotationClass the Class object corresponding to the annotation type
424 * @return the annotation of type {@code annotationClass} (if any) for each formal parameter
425 * present
426 */
427 @SuppressWarnings("unchecked")
428 default <T extends Annotation> T[] getParameterAnnotations(Class<T> annotationClass) {
429 Annotation[][] parameterAnnotations = getParameterAnnotations();
430 T[] result = (T[]) Array.newInstance(annotationClass, parameterAnnotations.length);
431 for (int i = 0; i < parameterAnnotations.length; i++) {
432 for (Annotation a : parameterAnnotations[i]) {
433 if (a.annotationType() == annotationClass) {
434 result[i] = annotationClass.cast(a);
435 }
436 }
437 }
438 return result;
439 }
440
441 /**
442 * Checks whether the method has bytecodes associated with it. Note that even if this method
443 * returns {@code true}, {@link #getCode} can return {@code null} if
444 * {@linkplain #getDeclaringClass() declaring class} is not
445 * {@linkplain ResolvedJavaType#isLinked() linked}.
446 *
447 * @return {@code this.getCodeSize() != 0}
448 */
449 default boolean hasBytecodes() {
450 return getCodeSize() != 0;
451 }
452
453 /**
454 * Checks whether the method has a receiver parameter - i.e., whether it is not static.
455 *
456 * @return whether the method has a receiver parameter
457 */
458 default boolean hasReceiver() {
459 return !isStatic();
460 }
461
462 /**
463 * Determines if this method is {@link java.lang.Object#Object()}.
464 */
465 default boolean isJavaLangObjectInit() {
466 return getDeclaringClass().isJavaLangObject() && getName().equals("<init>");
467 }
468
469 /**
470 * Gets a speculation log that can be used when compiling this method to make new speculations
471 * and query previously failed speculations. The implementation may return a new
472 * {@link SpeculationLog} object each time this method is called so its the caller's
473 * responsibility to ensure the same speculation log is used throughout a compilation.
474 */
475 SpeculationLog getSpeculationLog();
476 }
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