1579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson/* 2579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Copyright (C) 2011 The Android Open Source Project 3579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 4579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Licensed under the Apache License, Version 2.0 (the "License"); 5579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * you may not use this file except in compliance with the License. 6579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * You may obtain a copy of the License at 7579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 8579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 9579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 10579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Unless required by applicable law or agreed to in writing, software 11579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 12579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * See the License for the specific language governing permissions and 14579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * limitations under the License. 15579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 16579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 17579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonpackage com.google.dexmaker; 18579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 19579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.DexFormat; 20579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.DexOptions; 21579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.code.DalvCode; 22579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.code.PositionList; 23579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.code.RopTranslator; 24579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.file.ClassDefItem; 25579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.file.DexFile; 26579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.file.EncodedField; 27579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.dex.file.EncodedMethod; 285624228626d7cdf206de25a6981ba8107be61057Jesse Wilsonimport com.android.dx.rop.code.AccessFlags; 2990699b97998f1582a921202fb909f17f9718d177Jesse Wilsonimport static com.android.dx.rop.code.AccessFlags.ACC_CONSTRUCTOR; 30579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.rop.code.LocalVariableInfo; 31579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.rop.code.RopMethod; 32579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.rop.cst.CstString; 33579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.rop.cst.CstType; 34579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.rop.type.StdTypeList; 35579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.io.File; 36579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.io.FileOutputStream; 37579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.io.IOException; 38579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.lang.reflect.InvocationTargetException; 3923abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilsonimport java.lang.reflect.Modifier; 4090699b97998f1582a921202fb909f17f9718d177Jesse Wilsonimport static java.lang.reflect.Modifier.PRIVATE; 4190699b97998f1582a921202fb909f17f9718d177Jesse Wilsonimport static java.lang.reflect.Modifier.STATIC; 42579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.util.LinkedHashMap; 43579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.util.Map; 44579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.util.jar.JarEntry; 45579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.util.jar.JarOutputStream; 46579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 47579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson/** 480e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Generates a </i><strong>D</strong>alvik <strong>EX</strong>ecutable (dex) 49b0f6ea8cec29bd1b2453e8fd15d9c6f65ca3ea2cJesse Wilson * file for execution on Android. Dex files define classes and interfaces, 500e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * including their member methods and fields, executable code, and debugging 510e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * information. They also define annotations, though this API currently has no 520e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * facility to create a dex file that contains annotations. 530e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 540e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <p>This library is intended to satisfy two use cases: 550e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <ul> 560e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <li><strong>For runtime code generation.</strong> By embedding this library 570e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * in your Android application, you can dynamically generate and load 580e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * executable code. This approach takes advantage of the fact that the 590e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * host environment and target environment are both Android. 600e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <li><strong>For compile time code generation.</strong> You may use this 610e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * library as a part of a compiler that targets Android. In this scenario 620e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * the generated dex file must be installed on an Android device before it 630e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * can be executed. 640e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * </ul> 650e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 660e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <h3>Example: Fibonacci</h3> 670e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * To illustrate how this API is used, we'll use DexMaker to generate a class 68008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * equivalent to the following Java source: <pre> {@code 690e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 700e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * package com.publicobject.fib; 710e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 720e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * public class Fibonacci { 730e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * public static int fib(int i) { 740e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * if (i < 2) { 750e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * return i; 760e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * } 770e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * return fib(i - 1) + fib(i - 2); 780e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * } 790e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }}</pre> 800e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 810e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <p>We start by creating a {@link TypeId} to identify the generated {@code 820e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Fibonacci} class. DexMaker identifies types by their internal names like 830e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * {@code Ljava/lang/Object;} rather than their Java identifiers like {@code 840e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * java.lang.Object}. <pre> {@code 850e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 860e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * TypeId<?> fibonacci = TypeId.get("Lcom/google/dexmaker/examples/Fibonacci;"); 870e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 880e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 890e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <p>Next we declare the class. It allows us to specify the type's source file 900e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * for stack traces, its modifiers, its superclass, and the interfaces it 910e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * implements. In this case, {@code Fibonacci} is a public class that extends 920e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * from {@code Object}: <pre> {@code 930e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 940e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * String fileName = "Fibonacci.generated"; 950e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * DexMaker dexMaker = new DexMaker(); 960e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * dexMaker.declare(fibonacci, fileName, Modifier.PUBLIC, TypeId.OBJECT); 970e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 980e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * It is illegal to declare members of a class without also declaring the class 990e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * itself. 1000e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1010e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <p>To make it easier to go from our Java method to dex instructions, we'll 1020e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * manually translate it to pseudocode fit for an assembler. We need to replace 1030e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * control flow like {@code if()} blocks and {@code for()} loops with labels and 1040e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * branches. We'll also avoid performing multiple operations in one statement, 1050e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * using local variables to hold intermediate values as necessary: 1060e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <pre> {@code 1070e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1080e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * int constant1 = 1; 1090e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * int constant2 = 2; 1100e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * if (i < constant2) goto baseCase; 1110e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * int a = i - constant1; 1120e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * int b = i - constant2; 1130e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * int c = fib(a); 1140e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * int d = fib(b); 1150e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * int result = c + d; 1160e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * return result; 1170e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * baseCase: 1180e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * return i; 1190e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 1200e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 121008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * <p>We look up the {@code MethodId} for the method on the declaring type. This 122008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * takes the method's return type (possibly {@link TypeId#VOID}), its name and 123008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * its parameters types. Next we declare the method, specifying its modifiers by 124008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * bitwise ORing constants from {@link java.lang.reflect.Modifier}. The declare 125008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * call returns a {@link Code} object, which we'll use to define the method's 126008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * instructions. <pre> {@code 1270e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1280e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * MethodId<?, Integer> fib = fibonacci.getMethod(TypeId.INT, "fib", TypeId.INT); 1290e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Code code = dexMaker.declare(fib, Modifier.PUBLIC | Modifier.STATIC); 1300e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 1310e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1320e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * <p>One limitation of {@code DexMaker}'s API is that it requires all local 1330e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * variables to be created before any instructions are emitted. Use {@link 134008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * Code#newLocal newLocal()} to create a new local variable. The method's 135008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * parameters are exposed as locals using {@link Code#getParameter 136008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * getParameter()}. For non-static methods the {@code this} pointer is exposed 137008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * using {@link Code#getThis getThis()}. Here we declare all of the local 138008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * variables that we'll need for our {@code fib()} method: <pre> {@code 1390e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1400e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> i = code.getParameter(0, TypeId.INT); 1410e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> constant1 = code.newLocal(TypeId.INT); 1420e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> constant2 = code.newLocal(TypeId.INT); 1430e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> a = code.newLocal(TypeId.INT); 1440e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> b = code.newLocal(TypeId.INT); 1450e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> c = code.newLocal(TypeId.INT); 1460e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> d = code.newLocal(TypeId.INT); 1470e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Local<Integer> result = code.newLocal(TypeId.INT); 1480e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 1490e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 150008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * <p>Notice that {@link Local} has a type parameter of {@code Integer}. This is 151008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * useful for generating code that works with existing types like {@code String} 152008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * and {@code Integer}, but it can be a hindrance when generating code that 153008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * involves new types. For this reason you may prefer to use raw types only and 154008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * add {@code @SuppressWarnings("unsafe")} on your calling code. This will yield 155008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * the same result but you won't get IDE support if you make a type error. 1560e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 157b0f6ea8cec29bd1b2453e8fd15d9c6f65ca3ea2cJesse Wilson * <p>We're ready to start defining our method's instructions. The {@link Code} 158b0f6ea8cec29bd1b2453e8fd15d9c6f65ca3ea2cJesse Wilson * class catalogs the available instructions and their use. <pre> {@code 1590e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1600e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.loadConstant(constant1, 1); 1610e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.loadConstant(constant2, 2); 16223abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Label baseCase = new Label(); 1630e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.compare(Comparison.LT, baseCase, i, constant2); 1640e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.op(BinaryOp.SUBTRACT, a, i, constant1); 1650e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.op(BinaryOp.SUBTRACT, b, i, constant2); 1660e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.invokeStatic(fib, c, a); 1670e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.invokeStatic(fib, d, b); 1680e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.op(BinaryOp.ADD, result, c, d); 1690e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.returnValue(result); 1700e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.mark(baseCase); 1710e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * code.returnValue(i); 1720e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 1730e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 174008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * <p>We're done defining the dex file. We just need to write it to the 175008290ab55ac24ef656d254e41a03ad2b1fba7d2Jesse Wilson * filesystem or load it into the current process. For this example we'll load 1760e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * the generated code into the current process. This only works when the current 1773e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson * process is running on Android. We use {@link #generateAndLoad 1783e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson * generateAndLoad()} which takes the class loader that will be used as our 1793e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson * generated code's parent class loader. It also requires a directory where 1803e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson * temporary files can be written. <pre> {@code 1810e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1820e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * ClassLoader loader = dexMaker.generateAndLoad( 1835692b3b0303c55524ff206dc7840ffdb1fa47628Jesse Wilson * FibonacciMaker.class.getClassLoader(), getDataDirectory()); 1840e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 1850e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Finally we'll use reflection to lookup our generated class on its class 1860e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * loader and invoke its {@code fib()} method: <pre> {@code 1870e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * 1880e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Class<?> fibonacciClass = loader.loadClass("com.google.dexmaker.examples.Fibonacci"); 1890e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * Method fibMethod = fibonacciClass.getMethod("fib", int.class); 1900e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * System.out.println(fibMethod.invoke(null, 8)); 1910e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson * }</pre> 192579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 193ab220f004db90fa94ef9349ca1adde5f89012e8dJesse Wilsonpublic final class DexMaker { 1940e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson private final Map<TypeId<?>, TypeDeclaration> types 1950e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson = new LinkedHashMap<TypeId<?>, TypeDeclaration>(); 196579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 1973e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson /** 1983e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson * Creates a new {@code DexMaker} instance, which can be used to create a 1993e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson * single dex file. 2003e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson */ 2013e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson public DexMaker() { 2023e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson } 2033e7a2230ec75b59ae9b4aad292f51df2542ced7dJesse Wilson 2040e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson private TypeDeclaration getTypeDeclaration(TypeId<?> type) { 205579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson TypeDeclaration result = types.get(type); 206579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (result == null) { 207579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson result = new TypeDeclaration(type); 208579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson types.put(type, result); 209579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 210579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return result; 211579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 212579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 213579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 21423abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Declares {@code type}. 21523abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * 21623abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * @param flags a bitwise combination of {@link Modifier#PUBLIC}, {@link 21723abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Modifier#FINAL} and {@link Modifier#ABSTRACT}. 218579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 2190e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson public void declare(TypeId<?> type, String sourceFile, int flags, 2200e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson TypeId<?> supertype, TypeId<?>... interfaces) { 221579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson TypeDeclaration declaration = getTypeDeclaration(type); 222c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson int supportedFlags = Modifier.PUBLIC | Modifier.FINAL | Modifier.ABSTRACT; 223c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson if ((flags & ~supportedFlags) != 0) { 224c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson throw new IllegalArgumentException("Unexpected flag: " 225c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson + Integer.toHexString(flags)); 226c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson } 227579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (declaration.declared) { 228579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new IllegalStateException("already declared: " + type); 229579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 230579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson declaration.declared = true; 231579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson declaration.flags = flags; 232579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson declaration.supertype = supertype; 233579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson declaration.sourceFile = sourceFile; 234579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson declaration.interfaces = new TypeList(interfaces); 235579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 236579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 237579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 238c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson * Declares a method or constructor. 23923abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * 24023abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * @param flags a bitwise combination of {@link Modifier#PUBLIC}, {@link 24123abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Modifier#PRIVATE}, {@link Modifier#PROTECTED}, {@link Modifier#STATIC}, 242c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson * {@link Modifier#FINAL} and {@link Modifier#SYNCHRONIZED}. 2435624228626d7cdf206de25a6981ba8107be61057Jesse Wilson * <p><strong>Warning:</strong> the {@link Modifier#SYNCHRONIZED} flag 2445624228626d7cdf206de25a6981ba8107be61057Jesse Wilson * is insufficient to generate a synchronized method. You must also use 2455624228626d7cdf206de25a6981ba8107be61057Jesse Wilson * {@link Code#monitorEnter} and {@link Code#monitorExit} to acquire 2465624228626d7cdf206de25a6981ba8107be61057Jesse Wilson * a monitor. 24790699b97998f1582a921202fb909f17f9718d177Jesse Wilson */ 248579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public Code declare(MethodId<?, ?> method, int flags) { 249579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson TypeDeclaration typeDeclaration = getTypeDeclaration(method.declaringType); 250579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (typeDeclaration.methods.containsKey(method)) { 251579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new IllegalStateException("already declared: " + method); 252579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 253c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson 254c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson int supportedFlags = Modifier.PUBLIC | Modifier.PRIVATE | Modifier.PROTECTED 255c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson | Modifier.STATIC | Modifier.FINAL | Modifier.SYNCHRONIZED; 256c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson if ((flags & ~supportedFlags) != 0) { 257c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson throw new IllegalArgumentException("Unexpected flag: " 258c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson + Integer.toHexString(flags)); 259c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson } 260c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson 2615624228626d7cdf206de25a6981ba8107be61057Jesse Wilson // replace the SYNCHRONIZED flag with the DECLARED_SYNCHRONIZED flag 2625624228626d7cdf206de25a6981ba8107be61057Jesse Wilson if ((flags & Modifier.SYNCHRONIZED) != 0) { 2635624228626d7cdf206de25a6981ba8107be61057Jesse Wilson flags = (flags & ~Modifier.SYNCHRONIZED) | AccessFlags.ACC_DECLARED_SYNCHRONIZED; 2645624228626d7cdf206de25a6981ba8107be61057Jesse Wilson } 265c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson 266c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson if (method.isConstructor()) { 267c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson flags |= ACC_CONSTRUCTOR; 268c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson } 269c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson 270579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson MethodDeclaration methodDeclaration = new MethodDeclaration(method, flags); 271579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson typeDeclaration.methods.put(method, methodDeclaration); 272579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return methodDeclaration.code; 273579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 274579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 275579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 27623abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Declares a field. 27723abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * 27823abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * @param flags a bitwise combination of {@link Modifier#PUBLIC}, {@link 27923abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Modifier#PRIVATE}, {@link Modifier#PROTECTED}, {@link Modifier#STATIC}, 28023abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * {@link Modifier#FINAL}, {@link Modifier#VOLATILE}, and {@link 28123abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Modifier#TRANSIENT}. 282c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson * @param staticValue a constant representing the initial value for the 283c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson * static field, possibly null. This must be null if this field is 284c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson * non-static. 285579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 286579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public void declare(FieldId<?, ?> fieldId, int flags, Object staticValue) { 287579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson TypeDeclaration typeDeclaration = getTypeDeclaration(fieldId.declaringType); 288579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (typeDeclaration.fields.containsKey(fieldId)) { 289579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new IllegalStateException("already declared: " + fieldId); 290579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 291c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson 292c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson int supportedFlags = Modifier.PUBLIC | Modifier.PRIVATE | Modifier.PROTECTED 293c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson | Modifier.STATIC | Modifier.FINAL | Modifier.VOLATILE | Modifier.TRANSIENT; 294c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson if ((flags & ~supportedFlags) != 0) { 295c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson throw new IllegalArgumentException("Unexpected flag: " 296c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson + Integer.toHexString(flags)); 297c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson } 298c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson 299c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson if ((flags & Modifier.STATIC) == 0 && staticValue != null) { 300c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson throw new IllegalArgumentException("staticValue is non-null, but field is not static"); 301c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson } 302c0271e9981ddd85a13ed88defd0b5b1a5ccc6f46Jesse Wilson 303579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson FieldDeclaration fieldDeclaration = new FieldDeclaration(fieldId, flags, staticValue); 304579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson typeDeclaration.fields.put(fieldId, fieldDeclaration); 305579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 306579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 307579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 30823abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Generates a dex file and returns its bytes. 309579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 310579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public byte[] generate() { 311579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DexOptions options = new DexOptions(); 312579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson options.targetApiLevel = DexFormat.API_NO_EXTENDED_OPCODES; 313579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DexFile outputDex = new DexFile(options); 314579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 315579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (TypeDeclaration typeDeclaration : types.values()) { 316579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson outputDex.add(typeDeclaration.toClassDefItem()); 317579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 318579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 319579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson try { 320579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return outputDex.toDex(null, false); 321579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (IOException e) { 322579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new RuntimeException(e); 323579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 324579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 325579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 326579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 32723abc2fe89ec3713645d64bdb74415a9090084f4Jesse Wilson * Generates a dex file and loads its types into the current process. 328579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 32973cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * <h3>Picking a dex cache directory</h3> 33073cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * The {@code dexCache} should be an application-private directory. If 33173cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * you pass a world-writable directory like {@code /sdcard} a malicious app 33273cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * could inject code into your process. Most applications should use this: 33373cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * <pre> {@code 334579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 33573cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * File dexCache = getApplicationContext().getDir("dx", Context.MODE_PRIVATE); 33673cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * }</pre> 33773cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * If the {@code dexCache} is null, this method will consult the {@code 33873cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * dexmaker.dexcache} system property. If that exists, it will be used for 33973cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * the dex cache. If it doesn't exist, this method will attempt to guess 34073cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * the application's private data directory as a last resort. If that fails, 34173cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * this method will fail with an unchecked exception. You can avoid the 34273cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * exception by either providing a non-null value or setting the system 34373cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * property. 344579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 34573cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * @param parent the parent ClassLoader to be used when loading our 34673cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * generated types 34773cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * @param dexCache the destination directory where generated and optimized 34873cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * dex files will be written. If null, this class will try to guess the 34973cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson * application's private data dir. 350579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 35173cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson public ClassLoader generateAndLoad(ClassLoader parent, File dexCache) throws IOException { 35273cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson if (dexCache == null) { 35373cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson String property = System.getProperty("dexmaker.dexcache"); 35473cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson if (property != null) { 35573cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson dexCache = new File(property); 35673cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson } else { 35773cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson dexCache = new AppDataDirGuesser().guess(); 35873cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson if (dexCache == null) { 35973cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson throw new IllegalArgumentException("dexcache == null (and no default could be" 36073cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson + " found; consider setting the 'dexmaker.dexcache' system property)"); 36173cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson } 36273cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson } 36373cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson } 36473cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson 365579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson byte[] dex = generate(); 366579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 367579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /* 368579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * This implementation currently dumps the dex to the filesystem. It 369579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * jars the emitted .dex for the benefit of Gingerbread and earlier 370579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * devices, which can't load .dex files directly. 371579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 372579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * TODO: load the dex from memory where supported. 373579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 37473cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson File result = File.createTempFile("Generated", ".jar", dexCache); 375579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson result.deleteOnExit(); 376579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson JarOutputStream jarOut = new JarOutputStream(new FileOutputStream(result)); 377579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson jarOut.putNextEntry(new JarEntry(DexFormat.DEX_IN_JAR_NAME)); 378579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson jarOut.write(dex); 379579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson jarOut.closeEntry(); 380579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson jarOut.close(); 381579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson try { 382579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return (ClassLoader) Class.forName("dalvik.system.DexClassLoader") 383579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson .getConstructor(String.class, String.class, String.class, ClassLoader.class) 38473cfa4498f640e0915b95fc806db4a0d54172fe8Jesse Wilson .newInstance(result.getPath(), dexCache.getAbsolutePath(), null, parent); 385579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (ClassNotFoundException e) { 386579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new UnsupportedOperationException("load() requires a Dalvik VM", e); 387579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (InvocationTargetException e) { 388579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new RuntimeException(e.getCause()); 389579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (InstantiationException e) { 390579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new AssertionError(); 391579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (NoSuchMethodException e) { 392579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new AssertionError(); 393579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (IllegalAccessException e) { 394579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new AssertionError(); 395579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 396579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 397579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 398579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private static class TypeDeclaration { 3990e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson private final TypeId<?> type; 400579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 401579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** declared state */ 402579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private boolean declared; 403579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private int flags; 4040e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson private TypeId<?> supertype; 405579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private String sourceFile; 406579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private TypeList interfaces; 407579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 408579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private final Map<FieldId, FieldDeclaration> fields 409579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson = new LinkedHashMap<FieldId, FieldDeclaration>(); 410579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private final Map<MethodId, MethodDeclaration> methods 411579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson = new LinkedHashMap<MethodId, MethodDeclaration>(); 412579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 4130e49fb9243b7463835ab80ef7cc62435f55846ceJesse Wilson TypeDeclaration(TypeId<?> type) { 414579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.type = type; 415579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 416579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 417579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson ClassDefItem toClassDefItem() { 418579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (!declared) { 419579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new IllegalStateException("Undeclared type " + type + " declares members: " 420579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson + fields.keySet() + " " + methods.keySet()); 421579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 422579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 423579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DexOptions dexOptions = new DexOptions(); 424579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson dexOptions.targetApiLevel = DexFormat.API_NO_EXTENDED_OPCODES; 425579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 426579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson CstType thisType = type.constant; 427579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 428579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson ClassDefItem out = new ClassDefItem(thisType, flags, supertype.constant, 429579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson interfaces.ropTypes, new CstString(sourceFile)); 430579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 431579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (MethodDeclaration method : methods.values()) { 432579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson EncodedMethod encoded = method.toEncodedMethod(dexOptions); 433579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (method.isDirect()) { 434579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson out.addDirectMethod(encoded); 435579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } else { 436579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson out.addVirtualMethod(encoded); 437579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 438579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 439579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (FieldDeclaration field : fields.values()) { 440579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson EncodedField encoded = field.toEncodedField(); 441579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (field.isStatic()) { 442579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson out.addStaticField(encoded, Constants.getConstant(field.staticValue)); 443579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } else { 444579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson out.addInstanceField(encoded); 445579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 446579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 447579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 448579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return out; 449579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 450579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 451579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 452579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson static class FieldDeclaration { 453579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson final FieldId<?, ?> fieldId; 454579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private final int accessFlags; 455579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private final Object staticValue; 456579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 457579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson FieldDeclaration(FieldId<?, ?> fieldId, int accessFlags, Object staticValue) { 45890699b97998f1582a921202fb909f17f9718d177Jesse Wilson if ((accessFlags & STATIC) == 0 && staticValue != null) { 459579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new IllegalArgumentException("instance fields may not have a value"); 460579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 461579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.fieldId = fieldId; 462579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.accessFlags = accessFlags; 463579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.staticValue = staticValue; 464579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 465579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 466579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson EncodedField toEncodedField() { 467579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return new EncodedField(fieldId.constant, accessFlags); 468579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 469579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 470579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public boolean isStatic() { 47190699b97998f1582a921202fb909f17f9718d177Jesse Wilson return (accessFlags & STATIC) != 0; 472579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 473579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 474579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 475579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson static class MethodDeclaration { 476579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson final MethodId<?, ?> method; 477579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private final int flags; 478579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private final Code code; 479579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 480579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public MethodDeclaration(MethodId<?, ?> method, int flags) { 481579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.method = method; 482579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.flags = flags; 483579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.code = new Code(this); 484579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 485579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 486579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson boolean isStatic() { 48790699b97998f1582a921202fb909f17f9718d177Jesse Wilson return (flags & STATIC) != 0; 488579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 489579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 490579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson boolean isDirect() { 49190699b97998f1582a921202fb909f17f9718d177Jesse Wilson return (flags & (STATIC | PRIVATE | ACC_CONSTRUCTOR)) != 0; 492579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 493579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 494579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson EncodedMethod toEncodedMethod(DexOptions dexOptions) { 495579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson RopMethod ropMethod = new RopMethod(code.toBasicBlocks(), 0); 496579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson LocalVariableInfo locals = null; 497579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DalvCode dalvCode = RopTranslator.translate( 498579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson ropMethod, PositionList.NONE, locals, code.paramSize(), dexOptions); 499579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return new EncodedMethod(method.constant, flags, dalvCode, StdTypeList.EMPTY); 500579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 501579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 502579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson} 503