graal-jvmci-8: jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java comparison

comparison jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java @ 22672:1bbd4a7c274b

Rename jdk.internal.jvmci to jdk.vm.ci

author	Tom Rodriguez <tom.rodriguez@oracle.com>
date	Thu, 08 Oct 2015 17:28:41 -0700
parents	jvmci/jdk.internal.jvmci.meta/src/jdk/internal/jvmci/meta/ResolvedJavaType.java@ec96f33a101d
children	87394b31a42e

comparison

equal deleted inserted replaced

-:97f30e4d0e95
+:1bbd4a7c274b
+/*
+* 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.Annotation;
+import java.net.URL;
+import jdk.vm.ci.meta.Assumptions.AssumptionResult;
+/**
+* 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;
+}
+}

Mercurial > hg > graal-jvmci-8

comparison jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java @ 22672:1bbd4a7c274b