--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaMethod.java	Thu Oct 08 17:28:41 2015 -0700
@@ -0,0 +1,366 @@
+/*
+ * Copyright (c) 2009, 2014, 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.lang.invoke.MethodHandle;
+import java.lang.reflect.Array;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.Type;
+
+/**
+ * Represents a resolved Java method. Methods, like fields and types, are resolved through
+ * {@link ConstantPool constant pools}.
+ */
+public interface ResolvedJavaMethod extends JavaMethod, InvokeTarget, ModifiersProvider {
+
+    /**
+     * Returns the bytecode of this method, if the method has code. The returned byte array does not
+     * contain breakpoints or non-Java bytecodes. This may return null if the
+     * {@link #getDeclaringClass() holder} is not {@link ResolvedJavaType#isLinked() linked}.
+     *
+     * The contained constant pool indices may not be the ones found in the original class file but
+     * they can be used with the JVMCI API (e.g. methods in {@link ConstantPool}).
+     *
+     * @return the bytecode of the method, or {@code null} if {@code getCodeSize() == 0} or if the
+     *         code is not ready.
+     */
+    byte[] getCode();
+
+    /**
+     * Returns the size of the bytecode of this method, if the method has code. This is equivalent
+     * to {@link #getCode()}. {@code length} if the method has code.
+     *
+     * @return the size of the bytecode in bytes, or 0 if no bytecode is available
+     */
+    int getCodeSize();
+
+    /**
+     * Returns the {@link ResolvedJavaType} object representing the class or interface that declares
+     * this method.
+     */
+    ResolvedJavaType getDeclaringClass();
+
+    /**
+     * Returns the maximum number of locals used in this method's bytecodes.
+     */
+    int getMaxLocals();
+
+    /**
+     * Returns the maximum number of stack slots used in this method's bytecodes.
+     */
+    int getMaxStackSize();
+
+    /**
+     * {@inheritDoc}
+     * <p>
+     * Only the {@linkplain Modifier#methodModifiers() method flags} specified in the JVM
+     * specification will be included in the returned mask.
+     */
+    int getModifiers();
+
+    default boolean isFinal() {
+        return ModifiersProvider.super.isFinalFlagSet();
+    }
+
+    /**
+     * Determines if this method is a synthetic method as defined by the Java Language
+     * Specification.
+     */
+    default boolean isSynthetic() {
+        return (SYNTHETIC & getModifiers()) == SYNTHETIC;
+    }
+
+    /**
+     * Checks that the method is a <a
+     * href="http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.6">varargs</a>
+     * method.
+     *
+     * @return whether the method is a varargs method
+     */
+    default boolean isVarArgs() {
+        return (VARARGS & getModifiers()) == VARARGS;
+    }
+
+    /**
+     * Checks that the method is a <a
+     * href="http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.6">bridge</a>
+     * method.
+     *
+     * @return whether the method is a bridge method
+     */
+    default boolean isBridge() {
+        return (BRIDGE & getModifiers()) == BRIDGE;
+    }
+
+    /**
+     * Returns {@code true} if this method is a default method; returns {@code false} otherwise.
+     *
+     * A default method is a public non-abstract instance method, that is, a non-static method with
+     * a body, declared in an interface type.
+     *
+     * @return true if and only if this method is a default method as defined by the Java Language
+     *         Specification.
+     */
+    boolean isDefault();
+
+    /**
+     * Checks whether this method is a class initializer.
+     *
+     * @return {@code true} if the method is a class initializer
+     */
+    boolean isClassInitializer();
+
+    /**
+     * Checks whether this method is a constructor.
+     *
+     * @return {@code true} if the method is a constructor
+     */
+    boolean isConstructor();
+
+    /**
+     * Checks whether this method can be statically bound (usually, that means it is final or
+     * private or static, but not abstract, or the declaring class is final).
+     *
+     * @return {@code true} if this method can be statically bound
+     */
+    boolean canBeStaticallyBound();
+
+    /**
+     * Returns the list of exception handlers for this method.
+     */
+    ExceptionHandler[] getExceptionHandlers();
+
+    /**
+     * Returns a stack trace element for this method and a given bytecode index.
+     */
+    StackTraceElement asStackTraceElement(int bci);
+
+    /**
+     * Returns an object that provides access to the profiling information recorded for this method.
+     */
+    default ProfilingInfo getProfilingInfo() {
+        return getProfilingInfo(true, true);
+    }
+
+    /**
+     * Returns an object that provides access to the profiling information recorded for this method.
+     *
+     * @param includeNormal if true,
+     *            {@linkplain ProfilingInfo#getDeoptimizationCount(DeoptimizationReason)
+     *            deoptimization counts} will include deoptimization that happened during execution
+     *            of standard non-osr methods.
+     * @param includeOSR if true,
+     *            {@linkplain ProfilingInfo#getDeoptimizationCount(DeoptimizationReason)
+     *            deoptimization counts} will include deoptimization that happened during execution
+     *            of on-stack-replacement methods.
+     */
+    ProfilingInfo getProfilingInfo(boolean includeNormal, boolean includeOSR);
+
+    /**
+     * Invalidates the profiling information and restarts profiling upon the next invocation.
+     */
+    void reprofile();
+
+    /**
+     * Returns the constant pool of this method.
+     */
+    ConstantPool getConstantPool();
+
+    /**
+     * Returns all annotations of this method. If no annotations are present, an array of length 0
+     * is returned.
+     */
+    Annotation[] getAnnotations();
+
+    /**
+     * Returns the annotation for the specified type of this method, 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
+     *         method, else {@code null}
+     */
+    <T extends Annotation> T getAnnotation(Class<T> annotationClass);
+
+    /**
+     * Returns an array of arrays that represent the annotations on the formal parameters, in
+     * declaration order, of this method.
+     *
+     * @see Method#getParameterAnnotations()
+     */
+    Annotation[][] getParameterAnnotations();
+
+    /**
+     * Returns an array of {@link Type} objects that represent the formal parameter types, in
+     * declaration order, of this method.
+     *
+     * @see Method#getGenericParameterTypes()
+     */
+    Type[] getGenericParameterTypes();
+
+    /**
+     * Returns {@code true} if this method is not excluded from inlining and has associated Java
+     * bytecodes (@see {@link ResolvedJavaMethod#hasBytecodes()}).
+     */
+    boolean canBeInlined();
+
+    /**
+     * Returns {@code true} if the inlining of this method should be forced.
+     */
+    boolean shouldBeInlined();
+
+    /**
+     * Returns the LineNumberTable of this method or null if this method does not have a line
+     * numbers table.
+     */
+    LineNumberTable getLineNumberTable();
+
+    /**
+     * Returns the local variable table of this method or null if this method does not have a local
+     * variable table.
+     */
+    LocalVariableTable getLocalVariableTable();
+
+    /**
+     * Invokes the underlying method represented by this object, on the specified object with the
+     * specified parameters. This method is similar to a reflective method invocation by
+     * {@link Method#invoke}.
+     *
+     * @param receiver The receiver for the invocation, or {@code null} if it is a static method.
+     * @param arguments The arguments for the invocation.
+     * @return The value returned by the method invocation, or {@code null} if the return type is
+     *         {@code void}.
+     */
+    JavaConstant invoke(JavaConstant receiver, JavaConstant[] arguments);
+
+    /**
+     * Gets the encoding of (that is, a constant representing the value of) this method.
+     *
+     * @return a constant representing a reference to this method
+     */
+    Constant getEncoding();
+
+    /**
+     * Checks if this method is present in the virtual table for subtypes of the specified
+     * {@linkplain ResolvedJavaType type}.
+     *
+     * @return true is this method is present in the virtual table for subtypes of this type.
+     */
+    boolean isInVirtualMethodTable(ResolvedJavaType resolved);
+
+    /**
+     * Gets the annotation of a particular type for a formal parameter of this method.
+     *
+     * @param annotationClass the Class object corresponding to the annotation type
+     * @param parameterIndex the index of a formal parameter of {@code method}
+     * @return the annotation of type {@code annotationClass} for the formal parameter present, else
+     *         null
+     * @throws IndexOutOfBoundsException if {@code parameterIndex} does not denote a formal
+     *             parameter
+     */
+    default <T extends Annotation> T getParameterAnnotation(Class<T> annotationClass, int parameterIndex) {
+        if (parameterIndex >= 0) {
+            Annotation[][] parameterAnnotations = getParameterAnnotations();
+            for (Annotation a : parameterAnnotations[parameterIndex]) {
+                if (a.annotationType() == annotationClass) {
+                    return annotationClass.cast(a);
+                }
+            }
+        }
+        return null;
+    }
+
+    default JavaType[] toParameterTypes() {
+        JavaType receiver = isStatic() || isConstructor() ? null : getDeclaringClass();
+        return getSignature().toParameterTypes(receiver);
+    }
+
+    /**
+     * Gets the annotations of a particular type for the formal parameters of this method.
+     *
+     * @param annotationClass the Class object corresponding to the annotation type
+     * @return the annotation of type {@code annotationClass} (if any) for each formal parameter
+     *         present
+     */
+    @SuppressWarnings("unchecked")
+    default <T extends Annotation> T[] getParameterAnnotations(Class<T> annotationClass) {
+        Annotation[][] parameterAnnotations = getParameterAnnotations();
+        T[] result = (T[]) Array.newInstance(annotationClass, parameterAnnotations.length);
+        for (int i = 0; i < parameterAnnotations.length; i++) {
+            for (Annotation a : parameterAnnotations[i]) {
+                if (a.annotationType() == annotationClass) {
+                    result[i] = annotationClass.cast(a);
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Checks whether the method has bytecodes associated with it. Methods without bytecodes are
+     * either abstract or native methods.
+     *
+     * @return whether the definition of this method is Java bytecodes
+     */
+    default boolean hasBytecodes() {
+        return isConcrete() && !isNative();
+    }
+
+    /**
+     * Checks whether the method has a receiver parameter - i.e., whether it is not static.
+     *
+     * @return whether the method has a receiver parameter
+     */
+    default boolean hasReceiver() {
+        return !isStatic();
+    }
+
+    /**
+     * Determines if this method is {@link java.lang.Object#Object()}.
+     */
+    default boolean isJavaLangObjectInit() {
+        return getDeclaringClass().isJavaLangObject() && getName().equals("<init>");
+    }
+
+    SpeculationLog getSpeculationLog();
+
+    /**
+     * Determines if the method identified by its holder and name is a <a
+     * href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-2.html#jvms-2.9">signature
+     * polymorphic</a> method.
+     */
+    static boolean isSignaturePolymorphic(JavaType holder, String name, MetaAccessProvider metaAccess) {
+        if (!holder.getName().equals("Ljava/lang/invoke/MethodHandle;")) {
+            return false;
+        }
+        ResolvedJavaType methodHandleType = metaAccess.lookupJavaType(MethodHandle.class);
+        Signature signature = metaAccess.parseMethodDescriptor("([Ljava/lang/Object;)Ljava/lang/Object;");
+        ResolvedJavaMethod method = methodHandleType.findMethod(name, signature);
+        if (method == null) {
+            return false;
+        }
+        return method.isNative() && method.isVarArgs();
+    }
+}