Add ability to promote classes to public visibility (b74f7485) · Commits · e / os / android_frameworks_base

tools/layoutlib/create/src/com/android/tools/layoutlib/create/AsmGenerator.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -36,6 +36,7 @@ import java.util.Set;
		import java.util.TreeMap;
		import java.util.jar.JarEntry;
		import java.util.jar.JarOutputStream;
		import java.util.stream.Collectors;

		/**
		* Class that generates a new JAR from a list of classes, some of which are to be kept as-is
		@@ -78,6 +79,8 @@ public class AsmGenerator {
		private final Map<String, ICreateInfo.InjectMethodRunnable> mInjectedMethodsMap;
		/** A map { FQCN => set { field names } } which should be promoted to public visibility */
		private final Map<String, Set<String>> mPromotedFields;
		/** A list of classes to be promoted to public visibility */
		private final Set<String> mPromotedClasses;

		/**
		* Creates a new generator that can generate the output JAR with the stubbed classes.
		@@ -179,6 +182,9 @@ public class AsmGenerator {
		addToMap(createInfo.getPromotedFields(), mPromotedFields);

		mInjectedMethodsMap = createInfo.getInjectedMethodsMap();

		mPromotedClasses =
		Arrays.stream(createInfo.getPromotedClasses()).collect(Collectors.toSet());
		}

		/**
		@@ -400,7 +406,11 @@ public class AsmGenerator {
		if (promoteFields != null && !promoteFields.isEmpty()) {
		cv = new PromoteFieldClassAdapter(cv, promoteFields);
		}
		if (!mPromotedClasses.isEmpty()) {
		cv = new PromoteClassClassAdapter(cv, mPromotedClasses);
		}
		cr.accept(cv, 0);

		return cw.toByteArray();
		}

tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java

+12 −0

Original line number	Diff line number	Diff line
		@@ -112,6 +112,11 @@ public final class CreateInfo implements ICreateInfo {
		return PROMOTED_FIELDS;
		}

		@Override
		public String[] getPromotedClasses() {
		return PROMOTED_CLASSES;
		}

		@Override
		public Map<String, InjectMethodRunnable> getInjectedMethodsMap() {
		return INJECTED_METHODS;
		@@ -343,6 +348,13 @@ public final class CreateInfo implements ICreateInfo {
		"android.graphics.FontFamily#mBuilderPtr"
		};

		/**
		* List of classes to be promoted to public visibility. Prefer using PROMOTED_FIELDS to this
		* if possible.
		*/
		private final static String[] PROMOTED_CLASSES = new String[] {
		};

		/**
		* List of classes for which the methods returning them should be deleted.
		* The array contains a list of null terminated section starting with the name of the class

tools/layoutlib/create/src/com/android/tools/layoutlib/create/ICreateInfo.java

+5 −0

Original line number	Diff line number	Diff line
		@@ -77,6 +77,11 @@ public interface ICreateInfo {
		*/
		String[] getPromotedFields();

		/**
		* Returns a list of classes to be promoted to public visibility.
		*/
		String[] getPromotedClasses();

		/**
		* Returns a map from binary FQCN className to {@link InjectMethodRunnable} which will be
		* called to inject methods into a class.

tools/layoutlib/create/src/com/android/tools/layoutlib/create/PromoteClassClassAdapter.java

0 → 100644

+64 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.tools.layoutlib.create;

		import org.objectweb.asm.ClassVisitor;

		import java.util.Set;
		import java.util.stream.Collectors;

		import static org.objectweb.asm.Opcodes.ACC_PRIVATE;
		import static org.objectweb.asm.Opcodes.ACC_PROTECTED;
		import static org.objectweb.asm.Opcodes.ACC_PUBLIC;

		/**
		* Promotes given classes to public visibility.
		*/
		public class PromoteClassClassAdapter extends ClassVisitor {

		private final Set<String> mClassNames;
		private static final int CLEAR_PRIVATE_MASK = ~(ACC_PRIVATE \| ACC_PROTECTED);

		public PromoteClassClassAdapter(ClassVisitor cv, Set<String> classNames) {
		super(Main.ASM_VERSION, cv);
		mClassNames =
		classNames.stream().map(name -> name.replace(".", "/")).collect(Collectors.toSet());
		}

		@Override
		public void visit(int version, int access, String name, String signature, String superName,
		String[] interfaces) {
		if (mClassNames.contains(name)) {
		if ((access & ACC_PUBLIC) == 0) {
		access = (access & CLEAR_PRIVATE_MASK) \| ACC_PUBLIC;
		}
		}

		super.visit(version, access, name, signature, superName, interfaces);
		}

		@Override
		public void visitInnerClass(String name, String outerName, String innerName, int access) {
		if (mClassNames.contains(name)) {
		if ((access & ACC_PUBLIC) == 0) {
		access = (access & CLEAR_PRIVATE_MASK) \| ACC_PUBLIC;
		}
		}

		super.visitInnerClass(name, outerName, innerName, access);
		}
		}

tools/layoutlib/create/src/com/android/tools/layoutlib/create/PromoteFieldClassAdapter.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -31,7 +31,7 @@ import static org.objectweb.asm.Opcodes.ACC_PUBLIC;
		public class PromoteFieldClassAdapter extends ClassVisitor {

		private final Set<String> mFieldNames;
		private static final int ACC_NOT_PUBLIC = ~(ACC_PRIVATE \| ACC_PROTECTED);
		private static final int CLEAR_PRIVATE_MASK = ~(ACC_PRIVATE \| ACC_PROTECTED);

		public PromoteFieldClassAdapter(ClassVisitor cv, Set<String> fieldNames) {
		super(Main.ASM_VERSION, cv);
		@@ -43,7 +43,7 @@ public class PromoteFieldClassAdapter extends ClassVisitor {
		Object value) {
		if (mFieldNames.contains(name)) {
		if ((access & ACC_PUBLIC) == 0) {
		access = (access & ACC_NOT_PUBLIC) \| ACC_PUBLIC;
		access = (access & CLEAR_PRIVATE_MASK) \| ACC_PUBLIC;
		}
		}
		return super.visitField(access, name, desc, signature, value);