src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/CodeInstaller.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/CodeInstaller.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2010, 2013, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.nashorn.internal.runtime;
+
+import java.util.Collection;
+import java.util.Map;
+import jdk.nashorn.internal.codegen.ClassEmitter;
+
+/**
+ * Interface for installing classes passed to the compiler.
+ * As only the code generating package (i.e. Context) knows about
+ * the ScriptLoader and it would be a security hazard otherwise
+ * the Compiler is given an installation interface for its code.
+ * <p>
+ * The compiler still retains most of the state around code emission
+ * and management internally, so this is to avoid passing around any
+ * logic that isn't directly related to installing a class
+ *
+ */
+public interface CodeInstaller {
+ /**
+ * Return the {@link Context} associated with this code installer.
+ * @return the context.
+ */
+ public Context getContext();
+
+ /**
+ * Install a class.
+ * @param className name of the class with / separation
+ * @param bytecode bytecode
+ * @return the installed class
+ */
+ public Class<?> install(final String className, final byte[] bytecode);
+
+ /**
+ * Initialize already installed classes.
+ * @param classes the class to initialize
+ * @param source the source object for the classes
+ * @param constants the runtime constants for the classes
+ */
+ public void initialize(final Collection<Class<?>> classes, final Source source, final Object[] constants);
+
+ /**
+ * Verify generated bytecode before emission. This is called back from the
+ * {@link ClassEmitter} or the {@link Compiler}. If the "--verify-code" parameter
+ * hasn't been given, this is a nop
+ *
+ * @param code bytecode to verify
+ */
+ public void verify(final byte[] code);
+
+ /**
+ * Get next unique script id
+ * @return unique script id
+ */
+ public long getUniqueScriptId();
+
+ /**
+ * Store a compiled script for later reuse
+ *
+ * @param cacheKey key to use in cache
+ * @param source the script source
+ * @param mainClassName the main class name
+ * @param classBytes map of class names to class bytes
+ * @param initializers compilation id -> FunctionInitializer map
+ * @param constants constants array
+ * @param compilationId compilation id
+ */
+ public void storeScript(final String cacheKey, final Source source, final String mainClassName, final Map<String, byte[]> classBytes,
+ final Map<Integer, FunctionInitializer> initializers, final Object[] constants, final int compilationId);
+
+ /**
+ * Load a previously compiled script
+ * @param source the script source
+ * @param functionKey the function id and signature
+ * @return compiled script data
+ */
+ public StoredScript loadScript(Source source, String functionKey);
+
+ /**
+ * Returns a code installer {@code #isCompatibleWith(CodeInstaller) compatible with} this installer, but
+ * is suitable for on-demand compilations. Can return itself if it is itself suitable.
+ * @return a compatible code installer suitable for on-demand compilations.
+ */
+ public CodeInstaller getOnDemandCompilationInstaller();
+
+ /**
+ * Returns a code installer {@code #isCompatibleWith(CodeInstaller) compatible with} this installer, but
+ * is suitable for installation of multiple classes that reference each other by name. Should be used when
+ * a compilation job produces multiple compilation units. Can return itself if it is itself suitable.
+ * @return a compatible code installer suitable for installation of multiple classes.
+ */
+ public CodeInstaller getMultiClassCodeInstaller();
+
+ /**
+ * Returns true if this code installer is compatible with the other code installer. Compatibility is expected to be
+ * an equivalence relation, and installers are supposed to be compatible with those they create using
+ * {@link #getOnDemandCompilationInstaller()}.
+ * @param other the other code installer tested for compatibility with this code installer.
+ * @return true if this code installer is compatible with the other code installer.
+ */
+ public boolean isCompatibleWith(CodeInstaller other);
+
+}