package soot.jimple.parser;

/*-
 * #%L
 * Soot - a J*va Optimization Framework
 * %%
 * Copyright (C) 2000 Patrice Pominville
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 * 
 * This program 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-2.1.html>.
 * #L%
 */

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import soot.ArrayType;
import soot.BooleanConstant;
import soot.BooleanType;
import soot.ByteType;
import soot.CharType;
import soot.DoubleType;
import soot.FloatType;
import soot.Immediate;
import soot.IntType;
import soot.Local;
import soot.LongType;
import soot.Modifier;
import soot.NullType;
import soot.RefType;
import soot.Scene;
import soot.ShortType;
import soot.SootClass;
import soot.SootField;
import soot.SootFieldRef;
import soot.SootMethod;
import soot.SootMethodRef;
import soot.SootResolver;
import soot.Trap;
import soot.Type;
import soot.Unit;
import soot.UnitBox;
import soot.UnknownType;
import soot.Value;
import soot.VoidType;
import soot.jimple.BinopExpr;
import soot.jimple.ClassConstant;
import soot.jimple.DoubleConstant;
import soot.jimple.Expr;
import soot.jimple.FloatConstant;
import soot.jimple.IntConstant;
import soot.jimple.Jimple;
import soot.jimple.JimpleBody;
import soot.jimple.LongConstant;
import soot.jimple.NullConstant;
import soot.jimple.Stmt;
import soot.jimple.StringConstant;
import soot.jimple.UnopExpr;
import soot.jimple.parser.analysis.DepthFirstAdapter;
import soot.jimple.parser.node.AAbstractModifier;
import soot.jimple.parser.node.AAndBinop;
import soot.jimple.parser.node.AAnnotationModifier;
import soot.jimple.parser.node.AArrayDescriptor;
import soot.jimple.parser.node.AArrayNewExpr;
import soot.jimple.parser.node.AArrayReference;
import soot.jimple.parser.node.AAssignStatement;
import soot.jimple.parser.node.ABaseNonvoidType;
import soot.jimple.parser.node.ABinopBoolExpr;
import soot.jimple.parser.node.ABinopExpr;
import soot.jimple.parser.node.ABoolConstant;
import soot.jimple.parser.node.ABooleanBaseType;
import soot.jimple.parser.node.ABooleanBaseTypeNoName;
import soot.jimple.parser.node.ABreakpointStatement;
import soot.jimple.parser.node.AByteBaseType;
import soot.jimple.parser.node.AByteBaseTypeNoName;
import soot.jimple.parser.node.ACaseStmt;
import soot.jimple.parser.node.ACastExpression;
import soot.jimple.parser.node.ACatchClause;
import soot.jimple.parser.node.ACharBaseType;
import soot.jimple.parser.node.ACharBaseTypeNoName;
import soot.jimple.parser.node.AClassFileType;
import soot.jimple.parser.node.AClassNameBaseType;
import soot.jimple.parser.node.AClassNameMultiClassNameList;
import soot.jimple.parser.node.AClassNameSingleClassNameList;
import soot.jimple.parser.node.AClzzConstant;
import soot.jimple.parser.node.ACmpBinop;
import soot.jimple.parser.node.ACmpeqBinop;
import soot.jimple.parser.node.ACmpgBinop;
import soot.jimple.parser.node.ACmpgeBinop;
import soot.jimple.parser.node.ACmpgtBinop;
import soot.jimple.parser.node.ACmplBinop;
import soot.jimple.parser.node.ACmpleBinop;
import soot.jimple.parser.node.ACmpltBinop;
import soot.jimple.parser.node.ACmpneBinop;
import soot.jimple.parser.node.AConstantCaseLabel;
import soot.jimple.parser.node.ADeclaration;
import soot.jimple.parser.node.ADivBinop;
import soot.jimple.parser.node.ADoubleBaseType;
import soot.jimple.parser.node.ADoubleBaseTypeNoName;
import soot.jimple.parser.node.ADynamicInvokeExpr;
import soot.jimple.parser.node.AEntermonitorStatement;
import soot.jimple.parser.node.AEnumModifier;
import soot.jimple.parser.node.AExitmonitorStatement;
import soot.jimple.parser.node.AFieldMember;
import soot.jimple.parser.node.AFieldSignature;
import soot.jimple.parser.node.AFile;
import soot.jimple.parser.node.AFinalModifier;
import soot.jimple.parser.node.AFloatBaseType;
import soot.jimple.parser.node.AFloatBaseTypeNoName;
import soot.jimple.parser.node.AFloatConstant;
import soot.jimple.parser.node.AFullIdentNonvoidType;
import soot.jimple.parser.node.AFullMethodBody;
import soot.jimple.parser.node.AGotoStatement;
import soot.jimple.parser.node.AIdentNonvoidType;
import soot.jimple.parser.node.AIdentityNoTypeStatement;
import soot.jimple.parser.node.AIdentityStatement;
import soot.jimple.parser.node.AIfStatement;
import soot.jimple.parser.node.AInstanceofExpression;
import soot.jimple.parser.node.AIntBaseType;
import soot.jimple.parser.node.AIntBaseTypeNoName;
import soot.jimple.parser.node.AIntegerConstant;
import soot.jimple.parser.node.AInterfaceFileType;
import soot.jimple.parser.node.AInterfaceNonstaticInvoke;
import soot.jimple.parser.node.AInvokeStatement;
import soot.jimple.parser.node.ALabelStatement;
import soot.jimple.parser.node.ALengthofUnop;
import soot.jimple.parser.node.ALocalFieldRef;
import soot.jimple.parser.node.ALocalImmediate;
import soot.jimple.parser.node.ALocalVariable;
import soot.jimple.parser.node.ALongBaseType;
import soot.jimple.parser.node.ALongBaseTypeNoName;
import soot.jimple.parser.node.ALookupswitchStatement;
import soot.jimple.parser.node.AMethodMember;
import soot.jimple.parser.node.AMethodSignature;
import soot.jimple.parser.node.AMinusBinop;
import soot.jimple.parser.node.AModBinop;
import soot.jimple.parser.node.AMultBinop;
import soot.jimple.parser.node.AMultiArgList;
import soot.jimple.parser.node.AMultiLocalNameList;
import soot.jimple.parser.node.AMultiNewExpr;
import soot.jimple.parser.node.AMultiParameterList;
import soot.jimple.parser.node.ANativeModifier;
import soot.jimple.parser.node.ANegUnop;
import soot.jimple.parser.node.ANonstaticInvokeExpr;
import soot.jimple.parser.node.ANopStatement;
import soot.jimple.parser.node.ANovoidType;
import soot.jimple.parser.node.ANullBaseType;
import soot.jimple.parser.node.ANullBaseTypeNoName;
import soot.jimple.parser.node.ANullConstant;
import soot.jimple.parser.node.AOrBinop;
import soot.jimple.parser.node.APlusBinop;
import soot.jimple.parser.node.APrivateModifier;
import soot.jimple.parser.node.AProtectedModifier;
import soot.jimple.parser.node.APublicModifier;
import soot.jimple.parser.node.AQuotedNonvoidType;
import soot.jimple.parser.node.ARetStatement;
import soot.jimple.parser.node.AReturnStatement;
import soot.jimple.parser.node.AShlBinop;
import soot.jimple.parser.node.AShortBaseType;
import soot.jimple.parser.node.AShortBaseTypeNoName;
import soot.jimple.parser.node.AShrBinop;
import soot.jimple.parser.node.ASigFieldRef;
import soot.jimple.parser.node.ASimpleNewExpr;
import soot.jimple.parser.node.ASingleArgList;
import soot.jimple.parser.node.ASingleLocalNameList;
import soot.jimple.parser.node.ASingleParameterList;
import soot.jimple.parser.node.ASpecialNonstaticInvoke;
import soot.jimple.parser.node.AStaticInvokeExpr;
import soot.jimple.parser.node.AStaticModifier;
import soot.jimple.parser.node.AStrictfpModifier;
import soot.jimple.parser.node.AStringConstant;
import soot.jimple.parser.node.ASynchronizedModifier;
import soot.jimple.parser.node.ATableswitchStatement;
import soot.jimple.parser.node.AThrowStatement;
import soot.jimple.parser.node.AThrowsClause;
import soot.jimple.parser.node.ATransientModifier;
import soot.jimple.parser.node.AUnknownJimpleType;
import soot.jimple.parser.node.AUnnamedMethodSignature;
import soot.jimple.parser.node.AUnopExpr;
import soot.jimple.parser.node.AUnopExpression;
import soot.jimple.parser.node.AUshrBinop;
import soot.jimple.parser.node.AVirtualNonstaticInvoke;
import soot.jimple.parser.node.AVoidType;
import soot.jimple.parser.node.AVolatileModifier;
import soot.jimple.parser.node.AXorBinop;
import soot.jimple.parser.node.Node;
import soot.jimple.parser.node.PModifier;
import soot.jimple.parser.node.Start;
import soot.jimple.parser.node.TAtIdentifier;
import soot.jimple.parser.node.TFloatConstant;
import soot.jimple.parser.node.TFullIdentifier;
import soot.jimple.parser.node.TIdentifier;
import soot.jimple.parser.node.TIntegerConstant;
import soot.jimple.parser.node.TQuotedName;
import soot.jimple.parser.node.TStringConstant;
import soot.jimple.parser.node.Token;
import soot.util.StringTools;

/* Modified By Marc Berndl 17th May */

public class Walker extends DepthFirstAdapter {
  private static final Logger logger = LoggerFactory.getLogger(Walker.class);
  boolean debug = false;
  LinkedList mProductions = new LinkedList();
  SootClass mSootClass = null;
  Map<String, Local> mLocals = null;
  Value mValue = IntConstant.v(1);

  Map<Object, Unit> mLabelToStmtMap; // maps a label to the stmt following it
  // in the jimple source
  Map<String, List> mLabelToPatchList; // maps a label to the a list of stmts
  // that refer to the label (ie goto
  // lableX)

  protected final SootResolver mResolver;

  public Walker(SootResolver resolver) {
    mResolver = resolver;
    if (debug) {
      mProductions = new LinkedList() {
        public Object removeLast() {
          Object o = super.removeLast();
          if (debug) {
            logger.debug("popped: " + o);
          }
          return o;
        }
      };
    }
  }

  public Walker(SootClass sc, SootResolver resolver) {
    mSootClass = sc;
    mResolver = resolver;
  }

  public void outStart(Start node) {
    SootClass c = (SootClass) mProductions.removeLast();
  }

  public SootClass getSootClass() {
    if (mSootClass == null) {
      throw new RuntimeException("did not parse class yet....");
    }

    return mSootClass;
  }

  /*
   * file = modifier* file_type class_name extends_clause? implements_clause? file_body;
   */
  public void inAFile(AFile node) {
    if (debug) {
      logger.debug("reading class " + node.getClassName());
    }
  }

  public void caseAFile(AFile node) {
    inAFile(node);
    {
      Object temp[] = node.getModifier().toArray();
      for (Object element : temp) {
        ((PModifier) element).apply(this);
      }
    }
    if (node.getFileType() != null) {
      node.getFileType().apply(this);
    }
    if (node.getClassName() != null) {
      node.getClassName().apply(this);
    }

    String className = (String) mProductions.removeLast();

    if (mSootClass == null) {
      mSootClass = new SootClass(className);
      mSootClass.setResolvingLevel(SootClass.BODIES);
    } else {
      if (!mSootClass.getName().equals(className)) {
        throw new RuntimeException("Invalid SootClass for this JimpleAST. The SootClass provided is of type: >"
            + mSootClass.getName() + "< whereas this parse tree is for type: >" + className + "<");
      }
    }

    if (node.getExtendsClause() != null) {
      node.getExtendsClause().apply(this);
    }
    if (node.getImplementsClause() != null) {
      node.getImplementsClause().apply(this);
    }
    if (node.getFileBody() != null) {
      node.getFileBody().apply(this);
    }
    outAFile(node);
  }

  public void outAFile(AFile node) {
    // not not pop members; they have been taken care of.
    List implementsList = null;
    String superClass = null;

    String classType = null;

    if (node.getImplementsClause() != null) {
      implementsList = (List) mProductions.removeLast();
    }
    if (node.getExtendsClause() != null) {
      superClass = (String) mProductions.removeLast();
    }

    classType = (String) mProductions.removeLast();

    int modifierCount = node.getModifier().size();

    int modifierFlags = processModifiers(node.getModifier());

    if (classType.equals("interface")) {
      modifierFlags |= Modifier.INTERFACE;
    }

    mSootClass.setModifiers(modifierFlags);

    if (superClass != null) {
      mSootClass.setSuperclass(mResolver.makeClassRef(superClass));
    }

    if (implementsList != null) {
      Iterator implIt = implementsList.iterator();
      while (implIt.hasNext()) {
        SootClass interfaceClass = mResolver.makeClassRef((String) implIt.next());
        mSootClass.addInterface(interfaceClass);
      }
    }

    mProductions.addLast(mSootClass);
  }

  /*
   * member = {field} modifier* type name semicolon | {method} modifier* type name l_paren parameter_list? r_paren
   * throws_clause? method_body;
   */
  public void outAFieldMember(AFieldMember node) {
    int modifier = 0;
    Type type = null;
    String name = null;

    name = (String) mProductions.removeLast();
    type = (Type) mProductions.removeLast();

    modifier = processModifiers(node.getModifier());

    SootField f = Scene.v().makeSootField(name, type, modifier);
    mSootClass.addField(f);
  }

  public void outAMethodMember(AMethodMember node) {
    int modifier = 0;
    Type type;
    String name;
    List parameterList = null;
    List<SootClass> throwsClause = null;
    JimpleBody methodBody = null;

    if (node.getMethodBody() instanceof AFullMethodBody) {
      methodBody = (JimpleBody) mProductions.removeLast();
    }

    if (node.getThrowsClause() != null) {
      throwsClause = (List<SootClass>) mProductions.removeLast();
    }

    if (node.getParameterList() != null) {
      parameterList = (List) mProductions.removeLast();
    } else {
      parameterList = new ArrayList();
    }

    Object o = mProductions.removeLast();

    name = (String) o;
    type = (Type) mProductions.removeLast();
    modifier = processModifiers(node.getModifier());

    SootMethod method;

    if (throwsClause != null) {
      method = Scene.v().makeSootMethod(name, parameterList, type, modifier, throwsClause);
    } else {
      method = Scene.v().makeSootMethod(name, parameterList, type, modifier);
    }

    mSootClass.addMethod(method);

    if (method.isConcrete()) {
      methodBody.setMethod(method);
      method.setActiveBody(methodBody);

    } else if (node.getMethodBody() instanceof AFullMethodBody) {
      throw new RuntimeException("Impossible: !concrete => ! instanceof");
    }

  }

  /*
   * type = {void} void | {novoid} nonvoid_type;
   */

  public void outAVoidType(AVoidType node) {
    mProductions.addLast(VoidType.v());
  }

  /*
   * nonvoid_type = {base} base_type_no_name array_brackets*; {quoted} quoted_name array_brackets* | {ident} identifier
   * array_brackets* | {full_ident} full_identifier array_brackets*;
   */
  public void outABaseNonvoidType(ABaseNonvoidType node) {
    Type t = (Type) mProductions.removeLast();
    int dim = node.getArrayBrackets().size();
    if (dim > 0) {
      t = ArrayType.v(t, dim);
    }
    mProductions.addLast(t);
  }

  public void outAQuotedNonvoidType(AQuotedNonvoidType node) {
    String typeName = (String) mProductions.removeLast();
    Type t = RefType.v(typeName);

    int dim = node.getArrayBrackets().size();
    if (dim > 0) {
      t = ArrayType.v(t, dim);
    }
    mProductions.addLast(t);
  }

  public void outAIdentNonvoidType(AIdentNonvoidType node) {
    String typeName = (String) mProductions.removeLast();
    Type t = RefType.v(typeName);
    int dim = node.getArrayBrackets().size();
    if (dim > 0) {
      t = ArrayType.v(t, dim);
    }
    mProductions.addLast(t);
  }

  public void outAFullIdentNonvoidType(AFullIdentNonvoidType node) {
    String typeName = (String) mProductions.removeLast();
    Type t = RefType.v(typeName);
    int dim = node.getArrayBrackets().size();
    if (dim > 0) {
      t = ArrayType.v(t, dim);
    }
    mProductions.addLast(t);
  }

  /*
   * base_type_no_name = {boolean} boolean | {byte} byte | {char} char | {short} short | {int} int | {long} long | {float}
   * float | {double} double | {null} null_type;
   */

  public void outABooleanBaseTypeNoName(ABooleanBaseTypeNoName node) {
    mProductions.addLast(BooleanType.v());
  }

  public void outAByteBaseTypeNoName(AByteBaseTypeNoName node) {
    mProductions.addLast(ByteType.v());
  }

  public void outACharBaseTypeNoName(ACharBaseTypeNoName node) {
    mProductions.addLast(CharType.v());
  }

  public void outAShortBaseTypeNoName(AShortBaseTypeNoName node) {
    mProductions.addLast(ShortType.v());
  }

  public void outAIntBaseTypeNoName(AIntBaseTypeNoName node) {
    mProductions.addLast(IntType.v());
  }

  public void outALongBaseTypeNoName(ALongBaseTypeNoName node) {
    mProductions.addLast(LongType.v());
  }

  public void outAFloatBaseTypeNoName(AFloatBaseTypeNoName node) {
    mProductions.addLast(FloatType.v());
  }

  public void outADoubleBaseTypeNoName(ADoubleBaseTypeNoName node) {
    mProductions.addLast(DoubleType.v());
  }

  public void outANullBaseTypeNoName(ANullBaseTypeNoName node) {
    mProductions.addLast(NullType.v());
  }

  /*
   * base_type = {boolean} boolean | {byte} byte | {char} char | {short} short | {int} int | {long} long | {float} float |
   * {double} double | {null} null_type | {class_name} class_name;
   */

  public void outABooleanBaseType(ABooleanBaseType node) {
    mProductions.addLast(BooleanType.v());
  }

  public void outAByteBaseType(AByteBaseType node) {
    mProductions.addLast(ByteType.v());
  }

  public void outACharBaseType(ACharBaseType node) {
    mProductions.addLast(CharType.v());
  }

  public void outAShortBaseType(AShortBaseType node) {
    mProductions.addLast(ShortType.v());
  }

  public void outAIntBaseType(AIntBaseType node) {
    mProductions.addLast(IntType.v());
  }

  public void outALongBaseType(ALongBaseType node) {
    mProductions.addLast(LongType.v());
  }

  public void outAFloatBaseType(AFloatBaseType node) {
    mProductions.addLast(FloatType.v());
  }

  public void outADoubleBaseType(ADoubleBaseType node) {
    mProductions.addLast(DoubleType.v());
  }

  public void outANullBaseType(ANullBaseType node) {
    mProductions.addLast(NullType.v());
  }

  public void outAClassNameBaseType(AClassNameBaseType node) {
    String type = (String) mProductions.removeLast();
    if (type.equals("int")) {
      throw new RuntimeException();
    }
    mProductions.addLast(RefType.v(type));
  }

  /*
   * method_body = {empty} semicolon | {full} l_brace declaration* statement* catch_clause* r_brace;
   */

  public void inAFullMethodBody(AFullMethodBody node) {
    mLocals = new HashMap<String, Local>();
    mLabelToStmtMap = new HashMap<Object, Unit>();
    mLabelToPatchList = new HashMap<String, List>();
  }

  public void outAFullMethodBody(AFullMethodBody node) {
    JimpleBody jBody = Jimple.v().newBody();

    if (node.getCatchClause() != null) {
      int size = node.getCatchClause().size();
      for (int i = 0; i < size; i++) {
        jBody.getTraps().addFirst((Trap) mProductions.removeLast());
      }
    }

    if (node.getStatement() != null) {
      int size = node.getStatement().size();
      Unit lastStmt = null;
      for (int i = 0; i < size; i++) {
        Object o = mProductions.removeLast();
        if (o instanceof Unit) {
          jBody.getUnits().addFirst((Unit) o);
          lastStmt = (Unit) o;
        } else if (o instanceof String) {
          if (lastStmt == null) {
            throw new RuntimeException("impossible");
          }
          mLabelToStmtMap.put(o, lastStmt);
        } else {
          throw new RuntimeException("impossible");
        }
      }
    }

    if (node.getDeclaration() != null) {
      int size = node.getDeclaration().size();
      for (int i = 0; i < size; i++) {
        List<Local> localList = (List<Local>) mProductions.removeLast();

        jBody.getLocals().addAll(localList);
      }
    }

    Iterator<String> it = mLabelToPatchList.keySet().iterator();
    while (it.hasNext()) {
      String label = it.next();
      Unit target = mLabelToStmtMap.get(label);

      Iterator patchIt = mLabelToPatchList.get(label).iterator();
      while (patchIt.hasNext()) {
        UnitBox box = (UnitBox) patchIt.next();
        box.setUnit(target);
      }
    }

    /*
     * Iterator it = mLabelToStmtMap.keySet().iterator(); while(it.hasNext()) { String label = (String) it.next(); Unit
     * target = (Unit) mLabelToStmtMap.get(label);
     *
     * List l = (List) mLabelToPatchList.get(label); if(l != null) { Iterator patchIt = l.iterator();
     * while(patchIt.hasNext()) { UnitBox box = (UnitBox) patchIt.next(); box.setUnit(target); } } }
     */

    mProductions.addLast(jBody);
  }

  public void outANovoidType(ANovoidType node) {
  }

  /*
   * parameter_list = {single} parameter | {multi} parameter comma parameter_list;
   */

  public void outASingleParameterList(ASingleParameterList node) {
    List<Type> l = new ArrayList<Type>();
    l.add((Type) mProductions.removeLast());
    mProductions.addLast(l);
  }

  public void outAMultiParameterList(AMultiParameterList node) {
    List<Type> l = (List<Type>) mProductions.removeLast();
    l.add(0, (Type) mProductions.removeLast());
    mProductions.addLast(l);
  }

  /*
   * arg_list = {single} immediate | {multi} immediate comma arg_list;
   */
  public void outASingleArgList(ASingleArgList node) {
    List<Value> l = new ArrayList<Value>();

    l.add((Value) mProductions.removeLast());
    mProductions.addLast(l);
  }

  public void outAMultiArgList(AMultiArgList node) {
    List<Value> l = (List<Value>) mProductions.removeLast();
    l.add(0, (Value) mProductions.removeLast());
    mProductions.addLast(l);
  }

  /*
   * class_name_list = {class_name_single} class_name | {class_name_multi} class_name comma class_name_list;
   */

  public void outAClassNameSingleClassNameList(AClassNameSingleClassNameList node) {
    List<String> l = new ArrayList<String>();
    l.add((String) mProductions.removeLast());
    mProductions.addLast(l);
  }

  public void outAClassNameMultiClassNameList(AClassNameMultiClassNameList node) {
    List<String> l = (List<String>) mProductions.removeLast();
    l.add(0, (String) mProductions.removeLast());
    mProductions.addLast(l);
  }

  /*
   * file_type = {class} [theclass]:class | {interface} interface;
   */

  public void outAClassFileType(AClassFileType node) {
    mProductions.addLast("class");
  }

  public void outAInterfaceFileType(AInterfaceFileType node) {
    mProductions.addLast("interface");
  }

  /*
   * catch_clause = catch [name]:class_name from [from_label]:label_name to [to_label]:label_name with
   * [with_label]:label_name semicolon;
   */

  // public void caseACatchClause(ACatchClause node){}

  public void outACatchClause(ACatchClause node) {
    String exceptionName;
    UnitBox withUnit, fromUnit, toUnit;

    withUnit = Jimple.v().newStmtBox(null);
    addBoxToPatch((String) mProductions.removeLast(), withUnit);

    toUnit = Jimple.v().newStmtBox(null);
    addBoxToPatch((String) mProductions.removeLast(), toUnit);

    fromUnit = Jimple.v().newStmtBox(null);
    addBoxToPatch((String) mProductions.removeLast(), fromUnit);

    exceptionName = (String) mProductions.removeLast();

    Trap trap = Jimple.v().newTrap(mResolver.makeClassRef(exceptionName), fromUnit, toUnit, withUnit);
    mProductions.addLast(trap);
  }

  /*
   * declaration = jimple_type local_name_list semicolon;
   */

  public void outADeclaration(ADeclaration node) {
    List localNameList = (List) mProductions.removeLast();
    Type type = (Type) mProductions.removeLast();
    Iterator it = localNameList.iterator();
    List<Local> localList = new ArrayList<Local>();

    while (it.hasNext()) {
      Local l = Jimple.v().newLocal((String) it.next(), type);
      mLocals.put(l.getName(), l);
      localList.add(l);
    }
    mProductions.addLast(localList);
  }

  /*
   * jimple_type = {unknown} unknown | {nonvoid} nonvoid_type;
   */
  public void outAUnknownJimpleType(AUnknownJimpleType node) {
    mProductions.addLast(UnknownType.v());
  }

  /*
   * local_name_list = {single} local_name | {multi} local_name comma local_name_list;
   */

  public void outASingleLocalNameList(ASingleLocalNameList node) {
    List<String> l = new ArrayList<String>();
    l.add((String) mProductions.removeLast());
    mProductions.addLast(l);
  }

  public void outAMultiLocalNameList(AMultiLocalNameList node) {
    List<String> l = (List<String>) mProductions.removeLast();
    l.add(0, (String) mProductions.removeLast());
    mProductions.addLast(l);
  }

  /*
   * statement = {label} label_name colon | {breakpoint} breakpoint semicolon | {entermonitor} entermonitor immediate
   * semicolon | {exitmonitor} exitmonitor immediate semicolon | {switch} switch l_paren immediate r_paren l_brace case_stmt+
   * r_brace semicolon | {identity} local_name colon_equals at_identifier type semicolon | {identity_no_type} local_name
   * colon_equals at_identifier semicolon | {assign} variable equals expression semicolon | {if} if bool_expr goto_stmt |
   * {goto} goto_stmt | {nop} nop semicolon | {ret} ret immediate? semicolon | {return} return immediate? semicolon | {throw}
   * throw immediate semicolon | {invoke} invoke_expr semicolon;
   */

  public void outALabelStatement(ALabelStatement node) {
  }

  public void outABreakpointStatement(ABreakpointStatement node) {
    Unit u = Jimple.v().newBreakpointStmt();
    mProductions.addLast(u);
  }

  public void outAEntermonitorStatement(AEntermonitorStatement node) {
    Value op = (Value) mProductions.removeLast();

    Unit u = Jimple.v().newEnterMonitorStmt(op);
    mProductions.addLast(u);
  }

  public void outAExitmonitorStatement(AExitmonitorStatement node) {
    Value op = (Value) mProductions.removeLast();

    Unit u = Jimple.v().newExitMonitorStmt(op);
    mProductions.addLast(u);
  }

  /*
   * case_label = {constant} case minus? integer_constant | {default} default;
   */
  /*
   * case_stmt = case_label colon goto_stmt;
   */
  public void outACaseStmt(ACaseStmt node) {
    String labelName = (String) mProductions.removeLast();
    UnitBox box = Jimple.v().newStmtBox(null);

    addBoxToPatch(labelName, box);

    Value labelValue = null;
    if (node.getCaseLabel() instanceof AConstantCaseLabel) {
      labelValue = (Value) mProductions.removeLast();
    }

    // if labelValue == null, this is the default label.
    if (labelValue == null) {
      mProductions.addLast(box);
    } else {
      Object[] valueTargetPair = new Object[2];
      valueTargetPair[0] = labelValue;
      valueTargetPair[1] = box;
      mProductions.addLast(valueTargetPair);
    }
  }

  public void outATableswitchStatement(ATableswitchStatement node) {
    List<UnitBox> targets = new ArrayList<UnitBox>();
    UnitBox defaultTarget = null;

    int lowIndex = 0, highIndex = 0;

    if (node.getCaseStmt() != null) {
      int size = node.getCaseStmt().size();

      for (int i = 0; i < size; i++) {
        Object valueTargetPair = mProductions.removeLast();
        if (valueTargetPair instanceof UnitBox) {
          if (defaultTarget != null) {
            throw new RuntimeException("error: can't ;have more than 1 default stmt");
          }

          defaultTarget = (UnitBox) valueTargetPair;
        } else {
          Object[] pair = (Object[]) valueTargetPair;

          if ((i == 0 && defaultTarget == null) || (i == 1 && defaultTarget != null)) {
            highIndex = ((IntConstant) pair[0]).value;
          }
          if (i == (size - 1)) {
            lowIndex = ((IntConstant) pair[0]).value;
          }

          targets.add(0, (UnitBox) pair[1]);
        }
      }
    } else {
      throw new RuntimeException("error: switch stmt has no case stmts");
    }

    Value key = (Value) mProductions.removeLast();
    Unit switchStmt = Jimple.v().newTableSwitchStmt(key, lowIndex, highIndex, targets, defaultTarget);

    mProductions.addLast(switchStmt);
  }

  public void outALookupswitchStatement(ALookupswitchStatement node) {
    List<IntConstant> lookupValues = new ArrayList<IntConstant>();
    List<UnitBox> targets = new ArrayList<UnitBox>();
    UnitBox defaultTarget = null;

    if (node.getCaseStmt() != null) {
      int size = node.getCaseStmt().size();

      for (int i = 0; i < size; i++) {
        Object valueTargetPair = mProductions.removeLast();
        if (valueTargetPair instanceof UnitBox) {
          if (defaultTarget != null) {
            throw new RuntimeException("error: can't ;have more than 1 default stmt");
          }

          defaultTarget = (UnitBox) valueTargetPair;
        } else {
          Object[] pair = (Object[]) valueTargetPair;

          lookupValues.add(0, (IntConstant) pair[0]);
          targets.add(0, (UnitBox) pair[1]);
        }
      }
    } else {
      throw new RuntimeException("error: switch stmt has no case stmts");
    }

    Value key = (Value) mProductions.removeLast();
    Unit switchStmt = Jimple.v().newLookupSwitchStmt(key, lookupValues, targets, defaultTarget);

    mProductions.addLast(switchStmt);
  }

  public void outAIdentityStatement(AIdentityStatement node) {
    Type identityRefType = (Type) mProductions.removeLast();
    String atClause = (String) mProductions.removeLast();
    Value local = mLocals.get(mProductions.removeLast()); // the local ref
    // from it's
    // identifier

    Value ref = null;
    if (atClause.startsWith("@this")) {
      ref = Jimple.v().newThisRef((RefType) identityRefType);
    } else if (atClause.startsWith("@parameter")) {
      int index = Integer.parseInt(atClause.substring(10, atClause.length() - 1));

      ref = Jimple.v().newParameterRef(identityRefType, index);
    } else {
      throw new RuntimeException("shouldn't @caughtexception be handled by outAIdentityNoTypeStatement: got" + atClause);
    }

    Unit u = Jimple.v().newIdentityStmt(local, ref);
    mProductions.addLast(u);
  }

  public void outAIdentityNoTypeStatement(AIdentityNoTypeStatement node) {
    mProductions.removeLast(); // get rid of @caughtexception string
    // presently on top of the stack
    Value local = mLocals.get(mProductions.removeLast()); // the local ref
    // from it's
    // identifier

    Unit u = Jimple.v().newIdentityStmt(local, Jimple.v().newCaughtExceptionRef());
    mProductions.addLast(u);
  }

  public void outAAssignStatement(AAssignStatement node) {
    Object removeLast = mProductions.removeLast();
    Value rvalue = (Value) removeLast;
    Value variable = (Value) mProductions.removeLast();

    Unit u = Jimple.v().newAssignStmt(variable, rvalue);
    mProductions.addLast(u);
  }

  public void outAIfStatement(AIfStatement node) {
    String targetLabel = (String) mProductions.removeLast();
    Value condition = (Value) mProductions.removeLast();

    UnitBox box = Jimple.v().newStmtBox(null);
    Unit u = Jimple.v().newIfStmt(condition, box);

    addBoxToPatch(targetLabel, box);

    mProductions.addLast(u);
  }

  public void outAReturnStatement(AReturnStatement node) {
    Immediate v;
    Stmt s = null;
    if (node.getImmediate() != null) {
      v = (Immediate) mProductions.removeLast();
      s = Jimple.v().newReturnStmt(v);
    } else {
      s = Jimple.v().newReturnVoidStmt();
    }

    mProductions.addLast(s);
  }

  public void outAGotoStatement(AGotoStatement node) {
    String targetLabel = (String) mProductions.removeLast();

    UnitBox box = Jimple.v().newStmtBox(null);
    Unit branch = Jimple.v().newGotoStmt(box);

    addBoxToPatch(targetLabel, box);

    mProductions.addLast(branch);
  }

  public void outANopStatement(ANopStatement node) {
    Unit u = Jimple.v().newNopStmt();
    mProductions.addLast(u);
  }

  public void outARetStatement(ARetStatement node) {
    throw new RuntimeException("ret not yet implemented.");
  }

  public void outAThrowStatement(AThrowStatement node) {
    Value op = (Value) mProductions.removeLast();

    Unit u = Jimple.v().newThrowStmt(op);
    mProductions.addLast(u);
  }

  public void outAInvokeStatement(AInvokeStatement node) {
    Value op = (Value) mProductions.removeLast();

    Unit u = Jimple.v().newInvokeStmt(op);

    mProductions.addLast(u);
  }

  /*
   * case_label = {constant} case minus? integer_constant | {default} default;
   */
  public void outAConstantCaseLabel(AConstantCaseLabel node) {
    String s = (String) mProductions.removeLast();
    int sign = 1;
    if (node.getMinus() != null) {
      sign = -1;
    }

    if (s.endsWith("L")) {
      mProductions.addLast(LongConstant.v(sign * Long.parseLong(s.substring(0, s.length() - 1))));
    } else if (s.equals("2147483648")) {
      mProductions.addLast(IntConstant.v(sign * Integer.MIN_VALUE));
    } else {
      mProductions.addLast(IntConstant.v(sign * Integer.parseInt(s)));
    }
  }

  /*
   * immediate = {local} local_name | {constant} constant;
   */

  public void outALocalImmediate(ALocalImmediate node) {
    String local = (String) mProductions.removeLast();

    Local l = mLocals.get(local);
    if (l == null) {
      throw new RuntimeException("did not find local: " + local);
    }
    mProductions.addLast(l);
  }

  /*
   * constant = {integer} minus? integer_constant | {float} minus? float_constant | {string} string_constant | {null} null;
   */

  public void outANullConstant(ANullConstant node) {
    mProductions.addLast(NullConstant.v());
  }

  public void outAIntegerConstant(AIntegerConstant node) {
    String s = (String) mProductions.removeLast();

    StringBuffer buf = new StringBuffer();
    if (node.getMinus() != null) {
      buf.append('-');
    }
    buf.append(s);

    s = buf.toString();
    if (s.endsWith("L")) {
      mProductions.addLast(LongConstant.v(Long.parseLong(s.substring(0, s.length() - 1))));
    } else if (s.equals("2147483648")) {
      mProductions.addLast(IntConstant.v(Integer.MIN_VALUE));
    } else {
      mProductions.addLast(IntConstant.v(Integer.parseInt(s)));
    }
  }

  @Override
  public void outABoolConstant(ABoolConstant node) {
    String s = node.getBoolConstant().getText();
    BooleanConstant b = BooleanConstant.v(s.equals("true"));
    mProductions.addLast(b);
  }

  public void outAStringConstant(AStringConstant node) {
    String s = (String) mProductions.removeLast();
    mProductions.addLast(StringConstant.v(s));
    /*
     * try { String t = StringTools.getUnEscapedStringOf(s);
     *
     * mProductions.push(StringConstant.v(t)); } catch(RuntimeException e) { logger.debug(""+s); throw e; }
     */
  }

  public void outAClzzConstant(AClzzConstant node) {
    String s = (String) mProductions.removeLast();
    mProductions.addLast(ClassConstant.v(s));
  }

  /* ('#' (('-'? 'Infinity') | 'NaN') ('f' | 'F')? ) ; */
  public void outAFloatConstant(AFloatConstant node) {
    String s = (String) mProductions.removeLast();

    boolean isDouble = true;
    float value = 0;
    double dvalue = 0;

    if (s.endsWith("f") || s.endsWith("F")) {
      isDouble = false;
    }

    if (s.charAt(0) == '#') {
      if (s.charAt(1) == '-') {
        if (isDouble) {
          dvalue = Double.NEGATIVE_INFINITY;
        } else {
          value = Float.NEGATIVE_INFINITY;
        }
      } else if (s.charAt(1) == 'I') {
        if (isDouble) {
          dvalue = Double.POSITIVE_INFINITY;
        } else {
          value = Float.POSITIVE_INFINITY;
        }
      } else {
        if (isDouble) {
          dvalue = Double.NaN;
        } else {
          value = Float.NaN;
        }
      }
    } else {
      StringBuffer buf = new StringBuffer();
      if (node.getMinus() != null) {
        buf.append('-');
      }
      buf.append(s);
      s = buf.toString();

      if (isDouble) {
        dvalue = Double.parseDouble(s);
      } else {
        value = Float.parseFloat(s);
      }
    }

    Object res;
    if (isDouble) {
      res = DoubleConstant.v(dvalue);
    } else {
      res = FloatConstant.v(value);
    }

    mProductions.addLast(res);
  }

  /*
   * binop_expr = [left]:immediate binop [right]:immediate;
   */

  public void outABinopExpr(ABinopExpr node) {
    Value right = (Value) mProductions.removeLast();
    BinopExpr expr = (BinopExpr) mProductions.removeLast();
    Value left = (Value) mProductions.removeLast();

    expr.setOp1(left);
    expr.setOp2(right);
    mProductions.addLast(expr);
  }

  public void outABinopBoolExpr(ABinopBoolExpr node) {
  }

  public void outAUnopExpression(AUnopExpression node) {
  }

  /*
   * binop = {and} and | {or} or | {xor} xor | {mod} mod |
   *
   * {cmp} cmp | {cmpg} cmpg | {cmpl} cmpl | {cmpeq} cmpeq |
   *
   * {cmpne} cmpne | {cmpgt} cmpgt | {cmpge} cmpge | {cmplt} cmplt |
   *
   * {cmple} cmple | {shl} shl | {shr} shr | {ushr} ushr |
   *
   * {plus} plus | {minus} minus | {mult} mult | {div} div;
   */

  public void outAAndBinop(AAndBinop node) {
    mProductions.addLast(Jimple.v().newAndExpr(mValue, mValue));
  }

  public void outAOrBinop(AOrBinop node) {
    mProductions.addLast(Jimple.v().newOrExpr(mValue, mValue));
  }

  public void outAXorBinop(AXorBinop node) {
    mProductions.addLast(Jimple.v().newXorExpr(mValue, mValue));
  }

  public void outAModBinop(AModBinop node) {
    mProductions.addLast(Jimple.v().newRemExpr(mValue, mValue));
  }

  public void outACmpBinop(ACmpBinop node) {
    mProductions.addLast(Jimple.v().newCmpExpr(mValue, mValue));
  }

  public void outACmpgBinop(ACmpgBinop node) {
    mProductions.addLast(Jimple.v().newCmpgExpr(mValue, mValue));
  }

  public void outACmplBinop(ACmplBinop node) {
    mProductions.addLast(Jimple.v().newCmplExpr(mValue, mValue));
  }

  public void outACmpeqBinop(ACmpeqBinop node) {
    mProductions.addLast(Jimple.v().newEqExpr(mValue, mValue));
  }

  public void outACmpneBinop(ACmpneBinop node) {
    mProductions.addLast(Jimple.v().newNeExpr(mValue, mValue));
  }

  public void outACmpgtBinop(ACmpgtBinop node) {
    mProductions.addLast(Jimple.v().newGtExpr(mValue, mValue));
  }

  public void outACmpgeBinop(ACmpgeBinop node) {
    mProductions.addLast(Jimple.v().newGeExpr(mValue, mValue));
  }

  public void outACmpltBinop(ACmpltBinop node) {
    mProductions.addLast(Jimple.v().newLtExpr(mValue, mValue));
  }

  public void outACmpleBinop(ACmpleBinop node) {
    mProductions.addLast(Jimple.v().newLeExpr(mValue, mValue));
  }

  public void outAShlBinop(AShlBinop node) {
    mProductions.addLast(Jimple.v().newShlExpr(mValue, mValue));
  }

  public void outAShrBinop(AShrBinop node) {
    mProductions.addLast(Jimple.v().newShrExpr(mValue, mValue));
  }

  public void outAUshrBinop(AUshrBinop node) {
    mProductions.addLast(Jimple.v().newUshrExpr(mValue, mValue));
  }

  public void outAPlusBinop(APlusBinop node) {
    mProductions.addLast(Jimple.v().newAddExpr(mValue, mValue));
  }

  public void outAMinusBinop(AMinusBinop node) {
    mProductions.addLast(Jimple.v().newSubExpr(mValue, mValue));
  }

  public void outAMultBinop(AMultBinop node) {
    mProductions.addLast(Jimple.v().newMulExpr(mValue, mValue));
  }

  public void outADivBinop(ADivBinop node) {
    mProductions.addLast(Jimple.v().newDivExpr(mValue, mValue));
  }

  /*
   * throws_clause = throws class_name_list;
   */
  public void outAThrowsClause(AThrowsClause node) {
    List l = (List) mProductions.removeLast();

    Iterator it = l.iterator();
    List<SootClass> exceptionClasses = new ArrayList<SootClass>(l.size());

    while (it.hasNext()) {
      String className = (String) it.next();

      exceptionClasses.add(mResolver.makeClassRef(className));
    }

    mProductions.addLast(exceptionClasses);
  }

  /*
   * variable = {reference} reference | {local} local_name;
   */

  public void outALocalVariable(ALocalVariable node) {
    String local = (String) mProductions.removeLast();

    Local l = mLocals.get(local);
    if (l == null) {
      throw new RuntimeException("did not find local: " + local);
    }
    mProductions.addLast(l);
  }

  /*
   * public void caseAReferenceVariable(AReferenceVariable node) { }
   */

  /*
   * array_ref = identifier fixed_array_descriptor;
   */

  public void outAArrayReference(AArrayReference node) {
    Value immediate = (Value) mProductions.removeLast();
    String identifier = (String) mProductions.removeLast();

    Local l = mLocals.get(identifier);
    if (l == null) {
      throw new RuntimeException("did not find local: " + identifier);
    }

    mProductions.addLast(Jimple.v().newArrayRef(l, immediate));

  }

  /*
   * field_ref = {local} local_name dot field_signature | {sig} field_signature;
   */

  public void outALocalFieldRef(ALocalFieldRef node) {
    SootFieldRef field = (SootFieldRef) mProductions.removeLast();

    String local = (String) mProductions.removeLast();

    Local l = mLocals.get(local);
    if (l == null) {
      throw new RuntimeException("did not find local: " + local);
    }

    mProductions.addLast(Jimple.v().newInstanceFieldRef(l, field));
  }

  public void outASigFieldRef(ASigFieldRef node) {
    SootFieldRef field = (SootFieldRef) mProductions.removeLast();
    field = Scene.v().makeFieldRef(field.declaringClass(), field.name(), field.type(), true);
    mProductions.addLast(Jimple.v().newStaticFieldRef(field));
  }

  /*
   * field_signature = cmplt [class_name]:class_name [first]:colon type [field_name]:name cmpgt;
   */

  public void outAFieldSignature(AFieldSignature node) {
    String className, fieldName;
    Type t;

    fieldName = (String) mProductions.removeLast();
    t = (Type) mProductions.removeLast();
    className = (String) mProductions.removeLast();

    SootClass cl = mResolver.makeClassRef(className);
    SootFieldRef field = Scene.v().makeFieldRef(cl, fieldName, t, false);

    mProductions.addLast(field);
  }

  /*
   * expression = {new} new_expr | {cast} l_paren nonvoid_type r_paren local_name | {instanceof} immediate instanceof
   * nonvoid_type | {invoke} invoke_expr |
   *
   * {reference} reference | {binop} binop_expr | {unop} unop_expr | {immediate} immediate;
   */
  public void outACastExpression(ACastExpression node) {
    Value val = (Value) mProductions.removeLast();

    Type type = (Type) mProductions.removeLast();
    mProductions.addLast(Jimple.v().newCastExpr(val, type));
  }

  public void outAInstanceofExpression(AInstanceofExpression node) {
    Type nonvoidType = (Type) mProductions.removeLast();
    Value immediate = (Value) mProductions.removeLast();
    mProductions.addLast(Jimple.v().newInstanceOfExpr(immediate, nonvoidType));

  }

  /*
   * unop_expr = unop immediate;
   */
  public void outAUnopExpr(AUnopExpr node) {
    Value v = (Value) mProductions.removeLast();
    UnopExpr expr = (UnopExpr) mProductions.removeLast();
    expr.setOp(v);
    mProductions.addLast(expr);
  }

  /*
   * unop = {lengthof} lengthof | {neg} neg;
   */
  public void outALengthofUnop(ALengthofUnop node) {
    mProductions.addLast(Jimple.v().newLengthExpr(mValue));
  }

  public void outANegUnop(ANegUnop node) {
    mProductions.addLast(Jimple.v().newNegExpr(mValue));
  }

  /*
   * invoke_expr = {nonstatic} nonstatic_invoke local_name dot method_signature l_paren arg_list? r_paren | {static}
   * staticinvoke method_signature l_paren arg_list? r_paren;
   */

  public void outANonstaticInvokeExpr(ANonstaticInvokeExpr node) {
    List args;

    if (node.getArgList() != null) {
      args = (List) mProductions.removeLast();
    } else {
      args = new ArrayList();
    }

    SootMethodRef method = (SootMethodRef) mProductions.removeLast();

    String local = (String) mProductions.removeLast();

    Local l = mLocals.get(local);
    if (l == null) {
      throw new RuntimeException("did not find local: " + local);
    }

    Node invokeType = node.getNonstaticInvoke();
    Expr invokeExpr;

    if (invokeType instanceof ASpecialNonstaticInvoke) {
      invokeExpr = Jimple.v().newSpecialInvokeExpr(l, method, args);
    } else if (invokeType instanceof AVirtualNonstaticInvoke) {
      invokeExpr = Jimple.v().newVirtualInvokeExpr(l, method, args);
    } else {
      if (debug) {
        if (!(invokeType instanceof AInterfaceNonstaticInvoke)) {
          throw new RuntimeException("expected interface invoke.");
        }
      }
      invokeExpr = Jimple.v().newInterfaceInvokeExpr(l, method, args);
    }

    mProductions.addLast(invokeExpr);

  }

  public void outAStaticInvokeExpr(AStaticInvokeExpr node) {
    List args;

    if (node.getArgList() != null) {
      args = (List) mProductions.removeLast();
    } else {
      args = new ArrayList();
    }

    SootMethodRef method = (SootMethodRef) mProductions.removeLast();
    method = Scene.v().makeMethodRef(method.declaringClass(), method.name(), method.parameterTypes(), method.returnType(),
        true);

    mProductions.addLast(Jimple.v().newStaticInvokeExpr(method, args));
  }

  public void outADynamicInvokeExpr(ADynamicInvokeExpr node) {
    List<Value> bsmArgs;
    if (node.getStaticargs() != null) {
      bsmArgs = (List) mProductions.removeLast();
    } else {
      bsmArgs = Collections.emptyList();
    }

    SootMethodRef bsmMethodRef = (SootMethodRef) mProductions.removeLast();

    List<Value> dynArgs;
    if (node.getDynargs() != null) {
      dynArgs = (List) mProductions.removeLast();
    } else {
      dynArgs = Collections.emptyList();
    }

    SootMethodRef dynMethodRef = (SootMethodRef) mProductions.removeLast();

    mProductions.addLast(Jimple.v().newDynamicInvokeExpr(bsmMethodRef, bsmArgs, dynMethodRef, dynArgs));
  }

  public void outAUnnamedMethodSignature(AUnnamedMethodSignature node) {
    String className, methodName;
    List parameterList = new ArrayList();
    if (node.getParameterList() != null) {
      parameterList = (List) mProductions.removeLast();
    }

    Type type = (Type) mProductions.removeLast();
    String name = (String) mProductions.removeLast();

    SootClass sootClass = mResolver.makeClassRef(SootClass.INVOKEDYNAMIC_DUMMY_CLASS_NAME);
    SootMethodRef sootMethod = Scene.v().makeMethodRef(sootClass, name, parameterList, type, false);

    mProductions.addLast(sootMethod);
  }

  /*
   * method_signature = cmplt [class_name]:class_name [first]:colon type [method_name]:name l_paren parameter_list? r_paren
   * cmpgt;
   */
  public void outAMethodSignature(AMethodSignature node) {
    String className, methodName;
    List parameterList = new ArrayList();
    if (node.getParameterList() != null) {
      parameterList = (List) mProductions.removeLast();
    }

    methodName = (String) mProductions.removeLast();
    Type type = (Type) mProductions.removeLast();
    className = (String) mProductions.removeLast();

    SootClass sootClass = mResolver.makeClassRef(className);
    SootMethodRef sootMethod = Scene.v().makeMethodRef(sootClass, methodName, parameterList, type, false);

    mProductions.addLast(sootMethod);
  }

  /*
   * new_expr = {simple} new base_type | {array} newarray l_paren nonvoid_type r_paren fixed_array_descriptor | {multi}
   * newmultiarray l_paren base_type r_paren array_descriptor+;
   */
  public void outASimpleNewExpr(ASimpleNewExpr node) {
    mProductions.addLast(Jimple.v().newNewExpr((RefType) mProductions.removeLast()));
  }

  public void outAArrayNewExpr(AArrayNewExpr node) {
    Value size = (Value) mProductions.removeLast();
    Type type = (Type) mProductions.removeLast();
    mProductions.addLast(Jimple.v().newNewArrayExpr(type, size));
  }

  public void outAMultiNewExpr(AMultiNewExpr node) {

    LinkedList arrayDesc = node.getArrayDescriptor();

    int descCnt = arrayDesc.size();
    List sizes = new LinkedList();

    Iterator it = arrayDesc.iterator();
    while (it.hasNext()) {
      AArrayDescriptor o = (AArrayDescriptor) it.next();
      if (o.getImmediate() != null) {
        sizes.add(0, mProductions.removeLast());
      } else {
        break;
      }
    }

    Type type = (Type) mProductions.removeLast();
    ArrayType arrayType = ArrayType.v(type, descCnt);

    mProductions.addLast(Jimple.v().newNewMultiArrayExpr(arrayType, sizes));
  }

  public void defaultCase(Node node) {
    if (node instanceof TQuotedName || node instanceof TFullIdentifier || node instanceof TIdentifier
        || node instanceof TStringConstant ||

        node instanceof TIntegerConstant || node instanceof TFloatConstant || node instanceof TAtIdentifier

    ) {
      if (debug) {
        logger.debug("Default case -pushing token:" + ((Token) node).getText());
      }
      String tokenString = ((Token) node).getText();
      if (node instanceof TStringConstant || node instanceof TQuotedName) {
        tokenString = tokenString.substring(1, tokenString.length() - 1);
      } else if (node instanceof TFullIdentifier) {
        tokenString = Scene.v().unescapeName(tokenString);
      }

      if (node instanceof TIdentifier || node instanceof TFullIdentifier || node instanceof TQuotedName
          || node instanceof TStringConstant) {
        try {
          tokenString = StringTools.getUnEscapedStringOf(tokenString);

        } catch (RuntimeException e) {
          logger.debug("Invalid escaped string: " + tokenString);
          // just used the unescaped string, better than nothing
        }
      }

      mProductions.addLast(tokenString);
    }
  }

  protected int processModifiers(List l) {
    int modifier = 0;
    Iterator it = l.iterator();

    while (it.hasNext()) {
      Object t = it.next();
      if (t instanceof AAbstractModifier) {
        modifier |= Modifier.ABSTRACT;
      } else if (t instanceof AFinalModifier) {
        modifier |= Modifier.FINAL;
      } else if (t instanceof ANativeModifier) {
        modifier |= Modifier.NATIVE;
      } else if (t instanceof APublicModifier) {
        modifier |= Modifier.PUBLIC;
      } else if (t instanceof AProtectedModifier) {
        modifier |= Modifier.PROTECTED;
      } else if (t instanceof APrivateModifier) {
        modifier |= Modifier.PRIVATE;
      } else if (t instanceof AStaticModifier) {
        modifier |= Modifier.STATIC;
      } else if (t instanceof ASynchronizedModifier) {
        modifier |= Modifier.SYNCHRONIZED;
      } else if (t instanceof ATransientModifier) {
        modifier |= Modifier.TRANSIENT;
      } else if (t instanceof AVolatileModifier) {
        modifier |= Modifier.VOLATILE;
      } else if (t instanceof AStrictfpModifier) {
        modifier |= Modifier.STRICTFP;
      } else if (t instanceof AEnumModifier) {
        modifier |= Modifier.ENUM;
      } else if (t instanceof AAnnotationModifier) {
        modifier |= Modifier.ANNOTATION;
      } else {
        throw new RuntimeException(
            "Impossible: modifier unknown - Have you added a new modifier and not updated this file?");
      }
    }

    return modifier;
  }

  private void addBoxToPatch(String aLabelName, UnitBox aUnitBox) {
    List<UnitBox> patchList = mLabelToPatchList.get(aLabelName);
    if (patchList == null) {
      patchList = new ArrayList<UnitBox>();
      mLabelToPatchList.put(aLabelName, patchList);
    }

    patchList.add(aUnitBox);
  }

}
