hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package jdk.vm.ci.meta;

 import java.lang.annotation.*;
 import java.net.*;

 import jdk.vm.ci.meta.Assumptions.*;

 /**
  * Represents a resolved Java type. Types include primitives, objects, {@code void}, and arrays
  * thereof. Types, like fields and methods, are resolved through {@link ConstantPool constant pools}
  * .
  */
 public interface ResolvedJavaType extends JavaType, ModifiersProvider {
     /**
      * Gets the runtime representation of the Java class object of this type.
      */
     JavaConstant getJavaClass();

     /**
      * Gets the runtime representation of the "hub" of this type--that is, the closest part of the
      * type representation which is typically stored in the object header.
      */
     Constant getObjectHub();

     /**
      * Checks whether this type has a finalizer method.
      *
      * @return {@code true} if this class has a finalizer
      */
     boolean hasFinalizer();

     /**
      * Checks whether this type has any finalizable subclasses so far. Any decisions based on this
      * information require the registration of a dependency, since this information may change.
      *
      * @return {@code true} if this class has any subclasses with finalizers
      */
     AssumptionResult<Boolean> hasFinalizableSubclass();

     /**
      * Checks whether this type is an interface.
      *
      * @return {@code true} if this type is an interface
      */
     boolean isInterface();

     /**
      * Checks whether this type is an instance class.
      *
      * @return {@code true} if this type is an instance class
      */
     boolean isInstanceClass();

     /**
      * Checks whether this type is an array class.
      *
      * @return {@code true} if this type is an array class
      */
     boolean isArray();

     /**
      * Checks whether this type is primitive.
      *
      * @return {@code true} if this type is primitive
      */
     boolean isPrimitive();

     /**
      * {@inheritDoc}
      * <p>
      * Only the flags specified in the JVM specification will be included in the returned mask. This
      * method is identical to {@link Class#getModifiers()} in terms of the value return for this
      * type.
      */
     int getModifiers();

     /*
      * The setting of the final bit for types is a bit confusing since arrays are marked as final.
      * This method provides a semantically equivalent test that appropriate for types.
      */
     default boolean isLeaf() {
         return getElementalType().isFinalFlagSet();
     }

     /**
      * Checks whether this type is initialized. If a type is initialized it implies that it was
      * {@link #isLinked() linked} and that the static initializer has run.
      *
      * @return {@code true} if this type is initialized
      */
     boolean isInitialized();

     /**
      * Initializes this type.
      */
     void initialize();

     /**
      * Checks whether this type is linked and verified. When a type is linked the static initializer
      * has not necessarily run. An {@link #isInitialized() initialized} type is always linked.
      *
      * @return {@code true} if this type is linked
      */
     boolean isLinked();

     /**
      * Determines if this type is either the same as, or is a superclass or superinterface of, the
      * type represented by the specified parameter. This method is identical to
      * {@link Class#isAssignableFrom(Class)} in terms of the value return for this type.
      */
     boolean isAssignableFrom(ResolvedJavaType other);

     /**
      * Returns true if this type is exactly the type {@link java.lang.Object}.
      */
     default boolean isJavaLangObject() {
         // Removed assertion due to https://bugs.eclipse.org/bugs/show_bug.cgi?id=434442
         return getSuperclass() == null && !isInterface() && getJavaKind() == JavaKind.Object;
     }

     /**
      * Checks whether the specified object is an instance of this type.
      *
      * @param obj the object to test
      * @return {@code true} if the object is an instance of this type
      */
     boolean isInstance(JavaConstant obj);

     /**
      * Returns this type if it is an exact type otherwise returns null. This type is exact if it is
      * void, primitive, final, or an array of a final or primitive type.
      *
      * @return this type if it is exact; {@code null} otherwise
      */
     ResolvedJavaType asExactType();

     /**
      * Gets the super class of this type. If this type represents either the {@code Object} class,
      * an interface, a primitive type, or void, then null is returned. If this object represents an
      * array class then the type object representing the {@code Object} class is returned.
      */
     ResolvedJavaType getSuperclass();

     /**
      * Gets the interfaces implemented or extended by this type. This method is analogous to
      * {@link Class#getInterfaces()} and as such, only returns the interfaces directly implemented
      * or extended by this type.
      */
     ResolvedJavaType[] getInterfaces();

     /**
      * Gets the single implementor of this type. Calling this method on a non-interface type causes
      * an exception.
      * <p>
      * If the compiler uses the result of this method for its compilation, the usage must be guarded
      * because the verifier can not guarantee that the assigned type really implements this
      * interface. Additionally, class loading can invalidate the result of this method.
      *
      * @return {@code null} if there is no implementor, the implementor if there is only one, or
      *         {@code this} if there are more than one.
      */
     ResolvedJavaType getSingleImplementor();

     /**
      * Walks the class hierarchy upwards and returns the least common class that is a superclass of
      * both the current and the given type.
      *
      * @return the least common type that is a super type of both the current and the given type, or
      *         {@code null} if primitive types are involved.
      */
     ResolvedJavaType findLeastCommonAncestor(ResolvedJavaType otherType);

     /**
      * Attempts to get a leaf concrete subclass of this type.
      * <p>
      * For an {@linkplain #isArray() array} type A, the leaf concrete subclass is A if the
      * {@linkplain #getElementalType() elemental} type of A is final (which includes primitive
      * types). Otherwise {@code null} is returned for A.
      * <p>
      * For a non-array type T, the result is the leaf concrete type in the current hierarchy of T.
      * <p>
      * A runtime may decide not to manage or walk a large hierarchy and so the result is
      * conservative. That is, a non-null result is guaranteed to be the leaf concrete class in T's
      * hierarchy <b>at the current point in time</b> but a null result does not necessarily imply
      * that there is no leaf concrete class in T's hierarchy.
      * <p>
      * If the compiler uses the result of this method for its compilation, it must register the
      * {@link AssumptionResult} in its {@link Assumptions} because dynamic class loading can
      * invalidate the result of this method.
      *
      * @return an {@link AssumptionResult} containing the leaf concrete subclass for this type as
      *         described above
      */
     AssumptionResult<ResolvedJavaType> findLeafConcreteSubtype();

     ResolvedJavaType getComponentType();

     default ResolvedJavaType getElementalType() {
         ResolvedJavaType t = this;
         while (t.isArray()) {
             t = t.getComponentType();
         }
         return t;
     }

     ResolvedJavaType getArrayClass();

     /**
      * Resolves the method implementation for virtual dispatches on objects of this dynamic type.
      * This resolution process only searches "up" the class hierarchy of this type.
      *
      * @param method the method to select the implementation of
      * @param callerType the caller or context type used to perform access checks
      * @return the link-time resolved method (might be abstract) or {@code null} if it can not be
      *         linked
      */
     ResolvedJavaMethod resolveMethod(ResolvedJavaMethod method, ResolvedJavaType callerType);

     /**
      * Resolves the method implementation for virtual dispatches on objects of this dynamic type.
      * This resolution process only searches "up" the class hierarchy of this type. A broader search
      * that also walks "down" the hierarchy is implemented by
      * {@link #findUniqueConcreteMethod(ResolvedJavaMethod)}.
      *
      * @param method the method to select the implementation of
      * @param callerType the caller or context type used to perform access checks
      * @return the concrete method that would be selected at runtime, or {@code null} if there is no
      *         concrete implementation of {@code method} in this type or any of its superclasses
      */
     ResolvedJavaMethod resolveConcreteMethod(ResolvedJavaMethod method, ResolvedJavaType callerType);

     /**
      * Given a {@link ResolvedJavaMethod} A, returns a concrete {@link ResolvedJavaMethod} B that is
      * the only possible unique target for a virtual call on A(). Returns {@code null} if either no
      * such concrete method or more than one such method exists. Returns the method A if A is a
      * concrete method that is not overridden.
      * <p>
      * If the compiler uses the result of this method for its compilation, it must register an
      * assumption because dynamic class loading can invalidate the result of this method.
      *
      * @param method the method A for which a unique concrete target is searched
      * @return the unique concrete target or {@code null} if no such target exists or assumptions
      *         are not supported by this runtime
      */
     AssumptionResult<ResolvedJavaMethod> findUniqueConcreteMethod(ResolvedJavaMethod method);

     /**
      * Returns the instance fields of this class, including
      * {@linkplain ResolvedJavaField#isInternal() internal} fields. A zero-length array is returned
      * for array and primitive types. The order of fields returned by this method is stable. That
      * is, for a single JVM execution the same order is returned each time this method is called. It
      * is also the "natural" order, which means that the JVM would expect the fields in this order
      * if no specific order is given.
      *
      * @param includeSuperclasses if true, then instance fields for the complete hierarchy of this
      *            type are included in the result
      * @return an array of instance fields
      */
     ResolvedJavaField[] getInstanceFields(boolean includeSuperclasses);

     /**
      * Returns the static fields of this class, including
      * {@linkplain ResolvedJavaField#isInternal() internal} fields. A zero-length array is returned
      * for array and primitive types. The order of fields returned by this method is stable. That
      * is, for a single JVM execution the same order is returned each time this method is called.
      */
     ResolvedJavaField[] getStaticFields();

     /**
      * Returns all annotations of this class. If no annotations are present, an array of length 0 is
      * returned.
      */
     Annotation[] getAnnotations();

     /**
      * Returns the annotation for the specified type of this class, if such an annotation is
      * present.
      *
      * @param annotationClass the Class object corresponding to the annotation type
      * @return this element's annotation for the specified annotation type if present on this class,
      *         else {@code null}
      */
     <T extends Annotation> T getAnnotation(Class<T> annotationClass);

     /**
      * Returns the instance field of this class (or one of its super classes) at the given offset,
      * or {@code null} if there is no such field.
      *
      * @param offset the offset of the field to look for
      * @return the field with the given offset, or {@code null} if there is no such field.
      */
     ResolvedJavaField findInstanceFieldWithOffset(long offset, JavaKind expectedKind);

     /**
      * Returns name of source file of this type.
      */
     String getSourceFileName();

     /**
      * Returns the class file path - if available - of this type, or {@code null}.
      */
     URL getClassFilePath();

     /**
      * Returns {@code true} if the type is a local type.
      */
     boolean isLocal();

     /**
      * Returns {@code true} if the type is a member type.
      */
     boolean isMember();

     /**
      * Returns the enclosing type of this type, if it exists, or {@code null}.
      */
     ResolvedJavaType getEnclosingType();

     /**
      * Returns an array reflecting all the constructors declared by this type. This method is
      * similar to {@link Class#getDeclaredConstructors()} in terms of returned constructors.
      */
     ResolvedJavaMethod[] getDeclaredConstructors();

     /**
      * Returns an array reflecting all the methods declared by this type. This method is similar to
      * {@link Class#getDeclaredMethods()} in terms of returned methods.
      */
     ResolvedJavaMethod[] getDeclaredMethods();

     /**
      * Returns the {@code <clinit>} method for this class if there is one.
      */
     ResolvedJavaMethod getClassInitializer();

     /**
      * Returns true if this type represents an interface and it should be trusted even in places
      * where the JVM verifier would not give any guarantees other than {@link Object}.
      */
     boolean isTrustedInterfaceType();

     default ResolvedJavaMethod findMethod(String name, Signature signature) {
         for (ResolvedJavaMethod method : getDeclaredMethods()) {
             if (method.getName().equals(name) && method.getSignature().equals(signature)) {
                 return method;
             }
         }
         return null;
     }
 }
	/*
	* Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/
	package jdk.vm.ci.meta;

	import java.lang.annotation.*;
	import java.net.*;

	import jdk.vm.ci.meta.Assumptions.*;

	/**
	* Represents a resolved Java type. Types include primitives, objects, {@code void}, and arrays
	* thereof. Types, like fields and methods, are resolved through {@link ConstantPool constant pools}
	* .
	*/
	public interface ResolvedJavaType extends JavaType, ModifiersProvider {
	/**
	* Gets the runtime representation of the Java class object of this type.
	*/
	JavaConstant getJavaClass();

	/**
	* Gets the runtime representation of the "hub" of this type--that is, the closest part of the
	* type representation which is typically stored in the object header.
	*/
	Constant getObjectHub();

	/**
	* Checks whether this type has a finalizer method.
	*
	* @return {@code true} if this class has a finalizer
	*/
	boolean hasFinalizer();

	/**
	* Checks whether this type has any finalizable subclasses so far. Any decisions based on this
	* information require the registration of a dependency, since this information may change.
	*
	* @return {@code true} if this class has any subclasses with finalizers
	*/
	AssumptionResult<Boolean> hasFinalizableSubclass();

	/**
	* Checks whether this type is an interface.
	*
	* @return {@code true} if this type is an interface
	*/
	boolean isInterface();

	/**
	* Checks whether this type is an instance class.
	*
	* @return {@code true} if this type is an instance class
	*/
	boolean isInstanceClass();

	/**
	* Checks whether this type is an array class.
	*
	* @return {@code true} if this type is an array class
	*/
	boolean isArray();

	/**
	* Checks whether this type is primitive.
	*
	* @return {@code true} if this type is primitive
	*/
	boolean isPrimitive();

	/**
	* {@inheritDoc}
	* <p>
	* Only the flags specified in the JVM specification will be included in the returned mask. This
	* method is identical to {@link Class#getModifiers()} in terms of the value return for this
	* type.
	*/
	int getModifiers();

	/*
	* The setting of the final bit for types is a bit confusing since arrays are marked as final.
	* This method provides a semantically equivalent test that appropriate for types.
	*/
	default boolean isLeaf() {
	return getElementalType().isFinalFlagSet();
	}

	/**
	* Checks whether this type is initialized. If a type is initialized it implies that it was
	* {@link #isLinked() linked} and that the static initializer has run.
	*
	* @return {@code true} if this type is initialized
	*/
	boolean isInitialized();

	/**
	* Initializes this type.
	*/
	void initialize();

	/**
	* Checks whether this type is linked and verified. When a type is linked the static initializer
	* has not necessarily run. An {@link #isInitialized() initialized} type is always linked.
	*
	* @return {@code true} if this type is linked
	*/
	boolean isLinked();

	/**
	* Determines if this type is either the same as, or is a superclass or superinterface of, the
	* type represented by the specified parameter. This method is identical to
	* {@link Class#isAssignableFrom(Class)} in terms of the value return for this type.
	*/
	boolean isAssignableFrom(ResolvedJavaType other);

	/**
	* Returns true if this type is exactly the type {@link java.lang.Object}.
	*/
	default boolean isJavaLangObject() {
	// Removed assertion due to https://bugs.eclipse.org/bugs/show_bug.cgi?id=434442
	return getSuperclass() == null && !isInterface() && getJavaKind() == JavaKind.Object;
	}

	/**
	* Checks whether the specified object is an instance of this type.
	*
	* @param obj the object to test
	* @return {@code true} if the object is an instance of this type
	*/
	boolean isInstance(JavaConstant obj);

	/**
	* Returns this type if it is an exact type otherwise returns null. This type is exact if it is
	* void, primitive, final, or an array of a final or primitive type.
	*
	* @return this type if it is exact; {@code null} otherwise
	*/
	ResolvedJavaType asExactType();

	/**
	* Gets the super class of this type. If this type represents either the {@code Object} class,
	* an interface, a primitive type, or void, then null is returned. If this object represents an
	* array class then the type object representing the {@code Object} class is returned.
	*/
	ResolvedJavaType getSuperclass();

	/**
	* Gets the interfaces implemented or extended by this type. This method is analogous to
	* {@link Class#getInterfaces()} and as such, only returns the interfaces directly implemented
	* or extended by this type.
	*/
	ResolvedJavaType[] getInterfaces();

	/**
	* Gets the single implementor of this type. Calling this method on a non-interface type causes
	* an exception.
	* <p>
	* If the compiler uses the result of this method for its compilation, the usage must be guarded
	* because the verifier can not guarantee that the assigned type really implements this
	* interface. Additionally, class loading can invalidate the result of this method.
	*
	* @return {@code null} if there is no implementor, the implementor if there is only one, or
	* {@code this} if there are more than one.
	*/
	ResolvedJavaType getSingleImplementor();

	/**
	* Walks the class hierarchy upwards and returns the least common class that is a superclass of
	* both the current and the given type.
	*
	* @return the least common type that is a super type of both the current and the given type, or
	* {@code null} if primitive types are involved.
	*/
	ResolvedJavaType findLeastCommonAncestor(ResolvedJavaType otherType);

	/**
	* Attempts to get a leaf concrete subclass of this type.
	* <p>
	* For an {@linkplain #isArray() array} type A, the leaf concrete subclass is A if the
	* {@linkplain #getElementalType() elemental} type of A is final (which includes primitive
	* types). Otherwise {@code null} is returned for A.
	* <p>
	* For a non-array type T, the result is the leaf concrete type in the current hierarchy of T.
	* <p>
	* A runtime may decide not to manage or walk a large hierarchy and so the result is
	* conservative. That is, a non-null result is guaranteed to be the leaf concrete class in T's
	* hierarchy <b>at the current point in time</b> but a null result does not necessarily imply
	* that there is no leaf concrete class in T's hierarchy.
	* <p>
	* If the compiler uses the result of this method for its compilation, it must register the
	* {@link AssumptionResult} in its {@link Assumptions} because dynamic class loading can
	* invalidate the result of this method.
	*
	* @return an {@link AssumptionResult} containing the leaf concrete subclass for this type as
	* described above
	*/
	AssumptionResult<ResolvedJavaType> findLeafConcreteSubtype();

	ResolvedJavaType getComponentType();

	default ResolvedJavaType getElementalType() {
	ResolvedJavaType t = this;
	while (t.isArray()) {
	t = t.getComponentType();
	}
	return t;
	}

	ResolvedJavaType getArrayClass();

	/**
	* Resolves the method implementation for virtual dispatches on objects of this dynamic type.
	* This resolution process only searches "up" the class hierarchy of this type.
	*
	* @param method the method to select the implementation of
	* @param callerType the caller or context type used to perform access checks
	* @return the link-time resolved method (might be abstract) or {@code null} if it can not be
	* linked
	*/
	ResolvedJavaMethod resolveMethod(ResolvedJavaMethod method, ResolvedJavaType callerType);

	/**
	* Resolves the method implementation for virtual dispatches on objects of this dynamic type.
	* This resolution process only searches "up" the class hierarchy of this type. A broader search
	* that also walks "down" the hierarchy is implemented by
	* {@link #findUniqueConcreteMethod(ResolvedJavaMethod)}.
	*
	* @param method the method to select the implementation of
	* @param callerType the caller or context type used to perform access checks
	* @return the concrete method that would be selected at runtime, or {@code null} if there is no
	* concrete implementation of {@code method} in this type or any of its superclasses
	*/
	ResolvedJavaMethod resolveConcreteMethod(ResolvedJavaMethod method, ResolvedJavaType callerType);

	/**
	* Given a {@link ResolvedJavaMethod} A, returns a concrete {@link ResolvedJavaMethod} B that is
	* the only possible unique target for a virtual call on A(). Returns {@code null} if either no
	* such concrete method or more than one such method exists. Returns the method A if A is a
	* concrete method that is not overridden.
	* <p>
	* If the compiler uses the result of this method for its compilation, it must register an
	* assumption because dynamic class loading can invalidate the result of this method.
	*
	* @param method the method A for which a unique concrete target is searched
	* @return the unique concrete target or {@code null} if no such target exists or assumptions
	* are not supported by this runtime
	*/
	AssumptionResult<ResolvedJavaMethod> findUniqueConcreteMethod(ResolvedJavaMethod method);

	/**
	* Returns the instance fields of this class, including
	* {@linkplain ResolvedJavaField#isInternal() internal} fields. A zero-length array is returned
	* for array and primitive types. The order of fields returned by this method is stable. That
	* is, for a single JVM execution the same order is returned each time this method is called. It
	* is also the "natural" order, which means that the JVM would expect the fields in this order
	* if no specific order is given.
	*
	* @param includeSuperclasses if true, then instance fields for the complete hierarchy of this
	* type are included in the result
	* @return an array of instance fields
	*/
	ResolvedJavaField[] getInstanceFields(boolean includeSuperclasses);

	/**
	* Returns the static fields of this class, including
	* {@linkplain ResolvedJavaField#isInternal() internal} fields. A zero-length array is returned
	* for array and primitive types. The order of fields returned by this method is stable. That
	* is, for a single JVM execution the same order is returned each time this method is called.
	*/
	ResolvedJavaField[] getStaticFields();

	/**
	* Returns all annotations of this class. If no annotations are present, an array of length 0 is
	* returned.
	*/
	Annotation[] getAnnotations();

	/**
	* Returns the annotation for the specified type of this class, if such an annotation is
	* present.
	*
	* @param annotationClass the Class object corresponding to the annotation type
	* @return this element's annotation for the specified annotation type if present on this class,
	* else {@code null}
	*/
	<T extends Annotation> T getAnnotation(Class<T> annotationClass);

	/**
	* Returns the instance field of this class (or one of its super classes) at the given offset,
	* or {@code null} if there is no such field.
	*
	* @param offset the offset of the field to look for
	* @return the field with the given offset, or {@code null} if there is no such field.
	*/
	ResolvedJavaField findInstanceFieldWithOffset(long offset, JavaKind expectedKind);

	/**
	* Returns name of source file of this type.
	*/
	String getSourceFileName();

	/**
	* Returns the class file path - if available - of this type, or {@code null}.
	*/
	URL getClassFilePath();

	/**
	* Returns {@code true} if the type is a local type.
	*/
	boolean isLocal();

	/**
	* Returns {@code true} if the type is a member type.
	*/
	boolean isMember();

	/**
	* Returns the enclosing type of this type, if it exists, or {@code null}.
	*/
	ResolvedJavaType getEnclosingType();

	/**
	* Returns an array reflecting all the constructors declared by this type. This method is
	* similar to {@link Class#getDeclaredConstructors()} in terms of returned constructors.
	*/
	ResolvedJavaMethod[] getDeclaredConstructors();

	/**
	* Returns an array reflecting all the methods declared by this type. This method is similar to
	* {@link Class#getDeclaredMethods()} in terms of returned methods.
	*/
	ResolvedJavaMethod[] getDeclaredMethods();

	/**
	* Returns the {@code <clinit>} method for this class if there is one.
	*/
	ResolvedJavaMethod getClassInitializer();

	/**
	* Returns true if this type represents an interface and it should be trusted even in places
	* where the JVM verifier would not give any guarantees other than {@link Object}.
	*/
	boolean isTrustedInterfaceType();

	default ResolvedJavaMethod findMethod(String name, Signature signature) {
	for (ResolvedJavaMethod method : getDeclaredMethods()) {
	if (method.getName().equals(name) && method.getSignature().equals(signature)) {
	return method;
	}
	}
	return null;
	}
	}