content: /*
   * [The "BSD licence"]
   * Copyright (c) 2010 Ben Gruver
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package org.jf.dexlib.Code.Analysis;
  
  import org.jf.dexlib.Code.Format.Instruction35ms;
  import org.jf.dexlib.Code.Format.Instruction3rms;
  import org.jf.dexlib.Code.OdexedInvokeVirtual;
  import org.jf.dexlib.MethodIdItem;
  
  import static org.jf.dexlib.Code.Analysis.DeodexUtil.Static;
  import static org.jf.dexlib.Code.Analysis.DeodexUtil.Virtual;
  import static org.jf.dexlib.Code.Analysis.DeodexUtil.Direct;
  
  abstract class InlineMethodResolver {
      public static InlineMethodResolver createInlineMethodResolver(DeodexUtil deodexUtil, int odexVersion) {
          if (odexVersion == 35) {
              return new InlineMethodResolver_version35(deodexUtil);
          } else if (odexVersion == 36) {
              return new InlineMethodResolver_version36(deodexUtil);
          } else {
              throw new RuntimeException(String.format("odex version %d is not supported yet", odexVersion));
          }
      }
  
      private InlineMethodResolver() {
      }
  
      public abstract DeodexUtil.InlineMethod resolveExecuteInline(AnalyzedInstruction instruction);
  
      private static class InlineMethodResolver_version35 extends InlineMethodResolver
      {
          private final DeodexUtil.InlineMethod[] inlineMethods;
  
          public InlineMethodResolver_version35(DeodexUtil deodexUtil) {
              inlineMethods = new DeodexUtil.InlineMethod[] {
                  deodexUtil.new InlineMethod(Static, "Lorg/apache/harmony/dalvik/NativeTestTarget;", "emptyInlineMethod", "", "V"),
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "charAt", "I", "C"),
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "compareTo", "Ljava/lang/String;", "I"),
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "equals", "Ljava/lang/Object;", "Z"),
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "length", "", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "I", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "J", "J"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "F", "F"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "D", "D"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "min", "II", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "max", "II", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "sqrt", "D", "D"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "cos", "D", "D"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "sin", "D", "D")
              };
          }
  
          @Override
          public DeodexUtil.InlineMethod resolveExecuteInline(AnalyzedInstruction analyzedInstruction) {
              assert analyzedInstruction.instruction instanceof OdexedInvokeVirtual;
  
              OdexedInvokeVirtual instruction = (OdexedInvokeVirtual)analyzedInstruction.instruction;
              int methodIndex = instruction.getMethodIndex();
  
              if (methodIndex < 0 || methodIndex >= inlineMethods.length) {
                  throw new RuntimeException("Invalid method index: " + methodIndex);
              }
              return inlineMethods[methodIndex];
          }
      };
  
      private static class InlineMethodResolver_version36 extends InlineMethodResolver
      {
          private final DeodexUtil.InlineMethod[] inlineMethods;
          private final DeodexUtil.InlineMethod indexOfIMethod;
          private final DeodexUtil.InlineMethod indexOfIIMethod;
          private final DeodexUtil.InlineMethod fastIndexOfMethod;
          private final DeodexUtil.InlineMethod isEmptyMethod;
  
  
          public InlineMethodResolver_version36(DeodexUtil deodexUtil) {
              //The 5th and 6th entries differ between froyo and gingerbread. We have to look at the parameters being
              //passed to distinguish between them.
  
              //froyo
              indexOfIMethod = deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "indexOf", "I", "I");
              indexOfIIMethod = deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "indexOf", "II", "I");
  
              //gingerbread
              fastIndexOfMethod = deodexUtil.new InlineMethod(Direct, "Ljava/lang/String;", "fastIndexOf", "II", "I");
              isEmptyMethod = deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "isEmpty", "", "Z");
  
              inlineMethods = new DeodexUtil.InlineMethod[] {
                  deodexUtil.new InlineMethod(Static, "Lorg/apache/harmony/dalvik/NativeTestTarget;", "emptyInlineMethod", "", "V"),
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "charAt", "I", "C"),
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "compareTo", "Ljava/lang/String;", "I"),
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "equals", "Ljava/lang/Object;", "Z"),
                  //froyo: deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "indexOf", "I", "I"),
                  //gingerbread: deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "fastIndexOf", "II", "I"),
                  null,
                  //froyo: deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "indexOf", "II", "I"),
                  //gingerbread: deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "isEmpty", "", "Z"),
                  null,
                  deodexUtil.new InlineMethod(Virtual, "Ljava/lang/String;", "length", "", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "I", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "J", "J"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "F", "F"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "abs", "D", "D"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "min", "II", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "max", "II", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "sqrt", "D", "D"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "cos", "D", "D"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Math;", "sin", "D", "D"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Float;", "floatToIntBits", "F", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Float;", "floatToRawIntBits", "F", "I"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Float;", "intBitsToFloat", "I", "F"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Double;", "doubleToLongBits", "D", "J"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Double;", "doubleToRawLongBits", "D", "J"),
                  deodexUtil.new InlineMethod(Static, "Ljava/lang/Double;", "longBitsToDouble", "J", "D")
              };
          }
  
          @Override
          public DeodexUtil.InlineMethod resolveExecuteInline(AnalyzedInstruction analyzedInstruction) {
              assert analyzedInstruction.instruction instanceof OdexedInvokeVirtual;
  
              OdexedInvokeVirtual instruction = (OdexedInvokeVirtual)analyzedInstruction.instruction;
              int methodIndex = instruction.getMethodIndex();
  
              if (methodIndex < 0 || methodIndex >= inlineMethods.length) {
                  throw new RuntimeException("Invalid method index: " + methodIndex);
              }
  
              if (methodIndex == 4) {
                  int parameterCount = getParameterCount(instruction);
                  if (parameterCount == 2) {
                      return indexOfIMethod;
                  } else if (parameterCount == 3) {
                      return fastIndexOfMethod;
                  } else {
                      throw new RuntimeException("Could not determine the correct inline method to use");
                  }
              } else if (methodIndex == 5) {
                  int parameterCount = getParameterCount(instruction);
                  if (parameterCount == 3) {
                      return indexOfIIMethod;
                  } else if (parameterCount == 1) {
                      return isEmptyMethod;
                  } else {
                      throw new RuntimeException("Could not determine the correct inline method to use");
                  }
              }
  
              return inlineMethods[methodIndex];
          }
  
          private int getParameterCount(OdexedInvokeVirtual instruction) {
              if (instruction instanceof Instruction35ms) {
                  return ((Instruction35ms)instruction).getRegCount();
              } else {
                  return ((Instruction3rms)instruction).getRegCount();
              }
          }
      };
  }
  