/* Soot - a J*va Optimization Framework
* Copyright (C) 1997-2000 Etienne Gagnon. All rights reserved.
*
* This library 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 library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the Sable Research Group and others 1997-1999.
* See the 'credits' file distributed with Soot for the complete list of
* contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
*/
package soot.jimple.toolkits.typing;
import soot.*;
import soot.jimple.*;
import java.util.*;
import java.io.*;
class ConstraintChecker extends AbstractStmtSwitch
{
private final ClassHierarchy hierarchy;
private final boolean fix; // if true, fix constraint violations
private JimpleBody stmtBody;
public ConstraintChecker(TypeResolver resolver, boolean fix)
{
this.fix = fix;
hierarchy = resolver.hierarchy();
}
public void check(Stmt stmt, JimpleBody stmtBody) throws TypeException
{
try
{
this.stmtBody = stmtBody;
stmt.apply(this);
}
catch(RuntimeTypeException e)
{
StringWriter st = new StringWriter();
PrintWriter pw = new PrintWriter(st);
e.printStackTrace(pw);
pw.close();
throw new TypeException(st.toString());
}
}
private static class RuntimeTypeException extends RuntimeException
{
RuntimeTypeException(String message)
{
super(message);
}
}
static void error(String message)
{
throw new RuntimeTypeException(message);
}
private void handleInvokeExpr(InvokeExpr ie, Stmt invokestmt)
{
if(ie instanceof InterfaceInvokeExpr)
{
InterfaceInvokeExpr invoke = (InterfaceInvokeExpr) ie;
SootMethodRef method = invoke.getMethodRef();
Value base = invoke.getBase();
if(base instanceof Local)
{
Local local = (Local) base;
if(!hierarchy.typeNode(local.getType()).hasAncestorOrSelf(hierarchy.typeNode(method.declaringClass().getType())))
{
if(fix)
{
invoke.setBase(insertCast(local, method.declaringClass().getType(), invokestmt));
}
else
{
error("Type Error(7): local " + local + " is of incompatible type " + local.getType());
}
}
}
int count = invoke.getArgCount();
for(int i = 0; i < count; i++)
{
if(invoke.getArg(i) instanceof Local)
{
Local local = (Local) invoke.getArg(i);
if(!hierarchy.typeNode(local.getType()).hasAncestorOrSelf(hierarchy.typeNode(method.parameterType(i))))
{
if(fix)
{
invoke.setArg(i, insertCast(local, method.parameterType(i), invokestmt));
}
else
{
error("Type Error(8)");
}
}
}
}
}
else if(ie instanceof SpecialInvokeExpr)
{
SpecialInvokeExpr invoke = (SpecialInvokeExpr) ie;
SootMethodRef method = invoke.getMethodRef();
Value base = invoke.getBase();
if(base instanceof Local)
{
Local local = (Local) base;
if(!hierarchy.typeNode(local.getType()).hasAncestorOrSelf(hierarchy.typeNode(method.declaringClass().getType())))
{
if(fix)
{
invoke.setBase(insertCast(local, method.declaringClass().getType(), invokestmt));
}
else
{
error("Type Error(9)");
}
}
}
int count = invoke.getArgCount();
for(int i = 0; i < count; i++)
{
if(invoke.getArg(i) instanceof Local)
{
Local local = (Local) invoke.getArg(i);
if(!hierarchy.typeNode(local.getType()).hasAncestorOrSelf(hierarchy.typeNode(method.parameterType(i))))
{
if(fix)
{
invoke.setArg(i, insertCast(local, method.parameterType(i), invokestmt));
}
else
{
error("Type Error(10)");
}
}
}
}
}
else if(ie instanceof VirtualInvokeExpr)
{
VirtualInvokeExpr invoke = (VirtualInvokeExpr) ie;
SootMethodRef method = invoke.getMethodRef();
Value base = invoke.getBase();
if(base instanceof Local)
{
Local local = (Local) base;
if(!hierarchy.typeNode(local.getType()).hasAncestorOrSelf(hierarchy.typeNode(method.declaringClass().getType())))
{
if(fix)
{
invoke.setBase(insertCast(local, method.declaringClass().getType(), invokestmt));
}
else
{
error("Type Error(13)");
}
}
}
int count = invoke.getArgCount();
for(int i = 0; i < count; i++)
{
if(invoke.getArg(i) instanceof Local)
{
Local local = (Local) invoke.getArg(i);
if(!hierarchy.typeNode(local.getType()).hasAncestorOrSelf(hierarchy.typeNode(method.parameterType(i))))
{
if(fix)
{
invoke.setArg(i, insertCast(local, method.parameterType(i), invokestmt));
}
else
{
error("Type Error(14)");
}
}
}
}
}
else if(ie instanceof StaticInvokeExpr)
{
StaticInvokeExpr invoke = (StaticInvokeExpr) ie;
SootMethodRef method = invoke.getMethodRef();
int count = invoke.getArgCount();
for(int i = 0; i < count; i++)
{
if(invoke.getArg(i) instanceof Local)
{
Local local = (Local) invoke.getArg(i);
if(!hierarchy.typeNode(local.getType()).hasAncestorOrSelf(hierarchy.typeNode(method.parameterType(i))))
{
if(fix)
{
invoke.setArg(i, insertCast(local, method.parameterType(i), invokestmt));
}
else
{
error("Type Error(15)");
}
}
}
}
}
else
{
throw new RuntimeException("Unhandled invoke expression type: " + ie.getClass());
}
}
public void caseBreakpointStmt(BreakpointStmt stmt)
{
// Do nothing
}
public void caseInvokeStmt(InvokeStmt stmt)
{
handleInvokeExpr(stmt.getInvokeExpr(), stmt);
}
public void caseAssignStmt(AssignStmt stmt)
{
Value l = stmt.getLeftOp();
Value r = stmt.getRightOp();
TypeNode left = null;
//******** LEFT ********
if(l instanceof ArrayRef)
{
ArrayRef ref = (ArrayRef) l;
TypeNode base = hierarchy.typeNode(((Local) ref.getBase()).getType());
if(!base.isArray())
{
error("Type Error(16)");
}
left = base.element();
Value index = ref.getIndex();
if(index instanceof Local)
{
if(!hierarchy.typeNode(((Local) index).getType()).hasAncestorOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(17)");
}
}
}
else if(l instanceof Local)
{
try
{
left = hierarchy.typeNode(((Local) l).getType());
}
catch(InternalTypingException e)
{
G.v().out.println("untyped local: " + l);
throw e;
}
}
else if(l instanceof InstanceFieldRef)
{
InstanceFieldRef ref = (InstanceFieldRef) l;
TypeNode base = hierarchy.typeNode(((Local) ref.getBase()).getType());
if(!base.hasAncestorOrSelf(hierarchy.typeNode(ref.getField().getDeclaringClass().getType())))
{
if(fix)
{
ref.setBase(insertCast((Local) ref.getBase(), ref.getField().getDeclaringClass().getType(), stmt));
}
else
{
error("Type Error(18)");
}
}
left = hierarchy.typeNode(ref.getField().getType());
}
else if(l instanceof StaticFieldRef)
{
StaticFieldRef ref = (StaticFieldRef) l;
left = hierarchy.typeNode(ref.getField().getType());
}
else
{
throw new RuntimeException("Unhandled assignment left hand side type: " + l.getClass());
}
//******** RIGHT ********
if(r instanceof ArrayRef)
{
ArrayRef ref = (ArrayRef) r;
TypeNode base = hierarchy.typeNode(((Local) ref.getBase()).getType());
if(!base.isArray())
{
error("Type Error(19): " + base + " is not an array type");
}
if(base == hierarchy.NULL)
{
return;
}
if(!left.hasDescendantOrSelf(base.element()))
{
if(fix)
{
Type lefttype = left.type();
if(lefttype instanceof ArrayType)
{
ArrayType atype = (ArrayType) lefttype;
ref.setBase(insertCast((Local) ref.getBase(), ArrayType.v(atype.baseType, atype.numDimensions + 1), stmt));
}
else
{
ref.setBase(insertCast((Local) ref.getBase(), ArrayType.v(lefttype, 1), stmt));
}
}
else
{
error("Type Error(20)");
}
}
Value index = ref.getIndex();
if(index instanceof Local)
{
if(!hierarchy.typeNode(((Local) index).getType()).hasAncestorOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(21)");
}
}
}
else if(r instanceof DoubleConstant)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(DoubleType.v())))
{
error("Type Error(22)");
}
}
else if(r instanceof FloatConstant)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(FloatType.v())))
{
error("Type Error(45)");
}
}
else if(r instanceof IntConstant)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(23)");
}
}
else if(r instanceof LongConstant)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(LongType.v())))
{
error("Type Error(24)");
}
}
else if(r instanceof NullConstant)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(NullType.v())))
{
error("Type Error(25)");
}
}
else if(r instanceof StringConstant)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(RefType.v("java.lang.String"))))
{
error("Type Error(26)");
}
}
else if(r instanceof ClassConstant)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(RefType.v("java.lang.Class"))))
{
error("Type Error(27)");
}
}
else if(r instanceof BinopExpr)
{
//******** BINOP EXPR ********
BinopExpr be = (BinopExpr) r;
Value lv = be.getOp1();
Value rv = be.getOp2();
TypeNode lop;
TypeNode rop;
//******** LEFT ********
if(lv instanceof Local)
{
lop = hierarchy.typeNode(((Local) lv).getType());
}
else if(lv instanceof DoubleConstant)
{
lop = hierarchy.typeNode(DoubleType.v());
}
else if(lv instanceof FloatConstant)
{
lop = hierarchy.typeNode(FloatType.v());
}
else if(lv instanceof IntConstant)
{
lop = hierarchy.typeNode(IntType.v());
}
else if(lv instanceof LongConstant)
{
lop = hierarchy.typeNode(LongType.v());
}
else if(lv instanceof NullConstant)
{
lop = hierarchy.typeNode(NullType.v());
}
else if(lv instanceof StringConstant)
{
lop = hierarchy.typeNode(RefType.v("java.lang.String"));
}
else if(lv instanceof ClassConstant)
{
lop = hierarchy.typeNode(RefType.v("java.lang.Class"));
}
else
{
throw new RuntimeException("Unhandled binary expression left operand type: " + lv.getClass());
}
//******** RIGHT ********
if(rv instanceof Local)
{
rop = hierarchy.typeNode(((Local) rv).getType());
}
else if(rv instanceof DoubleConstant)
{
rop = hierarchy.typeNode(DoubleType.v());
}
else if(rv instanceof FloatConstant)
{
rop = hierarchy.typeNode(FloatType.v());
}
else if(rv instanceof IntConstant)
{
rop = hierarchy.typeNode(IntType.v());
}
else if(rv instanceof LongConstant)
{
rop = hierarchy.typeNode(LongType.v());
}
else if(rv instanceof NullConstant)
{
rop = hierarchy.typeNode(NullType.v());
}
else if(rv instanceof StringConstant)
{
rop = hierarchy.typeNode(RefType.v("java.lang.String"));
}
else if(rv instanceof ClassConstant)
{
rop = hierarchy.typeNode(RefType.v("java.lang.Class"));
}
else
{
throw new RuntimeException("Unhandled binary expression right operand type: " + rv.getClass());
}
if((be instanceof AddExpr) ||
(be instanceof SubExpr) ||
(be instanceof MulExpr) ||
(be instanceof DivExpr) ||
(be instanceof RemExpr) ||
(be instanceof AndExpr) ||
(be instanceof OrExpr) ||
(be instanceof XorExpr))
{
if(!(left.hasDescendantOrSelf(lop) &&
left.hasDescendantOrSelf(rop)))
{
error("Type Error(27)");
}
}
else if((be instanceof ShlExpr) ||
(be instanceof ShrExpr) ||
(be instanceof UshrExpr))
{
if(!(left.hasDescendantOrSelf(lop) &&
hierarchy.typeNode(IntType.v()).hasAncestorOrSelf(rop)))
{
error("Type Error(28)");
}
}
else if((be instanceof CmpExpr) ||
(be instanceof CmpgExpr) ||
(be instanceof CmplExpr) ||
(be instanceof EqExpr) ||
(be instanceof GeExpr) ||
(be instanceof GtExpr) ||
(be instanceof LeExpr) ||
(be instanceof LtExpr) ||
(be instanceof NeExpr))
{
try
{
lop.lca(rop);
}
catch(TypeException e)
{
error(e.getMessage());
}
if(!left.hasDescendantOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(29)");
}
}
else
{
throw new RuntimeException("Unhandled binary expression type: " + be.getClass());
}
}
else if(r instanceof CastExpr)
{
CastExpr ce = (CastExpr) r;
TypeNode cast = hierarchy.typeNode(ce.getCastType());
if(ce.getOp() instanceof Local)
{
TypeNode op = hierarchy.typeNode(((Local) ce.getOp()).getType());
try
{
// we must be careful not to reject primitive type casts (e.g. int to long)
if(cast.isClassOrInterface() || op.isClassOrInterface())
{
cast.lca(op);
}
}
catch(TypeException e)
{
G.v().out.println(r + "[" + op + "<->" + cast + "]");
error(e.getMessage());
}
}
if(!left.hasDescendantOrSelf(cast))
{
error("Type Error(30)");
}
}
else if(r instanceof InstanceOfExpr)
{
InstanceOfExpr ioe = (InstanceOfExpr) r;
TypeNode type = hierarchy.typeNode(ioe.getCheckType());
TypeNode op = hierarchy.typeNode(ioe.getOp().getType());
try
{
op.lca(type);
}
catch(TypeException e)
{
G.v().out.println(r + "[" + op + "<->" + type + "]");
error(e.getMessage());
}
if(!left.hasDescendantOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(31)");
}
}
else if(r instanceof InvokeExpr)
{
InvokeExpr ie = (InvokeExpr) r;
handleInvokeExpr(ie, stmt);
if(!left.hasDescendantOrSelf(hierarchy.typeNode(ie.getMethodRef().returnType())))
{
error("Type Error(32)");
}
}
else if(r instanceof NewArrayExpr)
{
NewArrayExpr nae = (NewArrayExpr) r;
Type baseType = nae.getBaseType();
TypeNode right;
if(baseType instanceof ArrayType)
{
right = hierarchy.typeNode(ArrayType.v(((ArrayType) baseType).baseType,
((ArrayType) baseType).numDimensions + 1));
}
else
{
right = hierarchy.typeNode(ArrayType.v(baseType, 1));
}
if(!left.hasDescendantOrSelf(right))
{
error("Type Error(33)");
}
Value size = nae.getSize();
if(size instanceof Local)
{
TypeNode var = hierarchy.typeNode(((Local) size).getType());
if(!var.hasAncestorOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(34)");
}
}
}
else if(r instanceof NewExpr)
{
NewExpr ne = (NewExpr) r;
if(!left.hasDescendantOrSelf(hierarchy.typeNode(ne.getBaseType())))
{
error("Type Error(35)");
}
}
else if(r instanceof NewMultiArrayExpr)
{
NewMultiArrayExpr nmae = (NewMultiArrayExpr) r;
if(!left.hasDescendantOrSelf(hierarchy.typeNode(nmae.getBaseType())))
{
error("Type Error(36)");
}
for(int i = 0; i < nmae.getSizeCount(); i++)
{
Value size = nmae.getSize(i);
if(size instanceof Local)
{
TypeNode var = hierarchy.typeNode(((Local) size).getType());
if(!var.hasAncestorOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(37)");
}
}
}
}
else if(r instanceof LengthExpr)
{
LengthExpr le = (LengthExpr) r;
if(!left.hasDescendantOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(38)");
}
if(le.getOp() instanceof Local)
{
if(!hierarchy.typeNode(((Local) le.getOp()).getType()).isArray())
{
error("Type Error(39)");
}
}
}
else if(r instanceof NegExpr)
{
NegExpr ne = (NegExpr) r;
TypeNode right;
if(ne.getOp() instanceof Local)
{
right = hierarchy.typeNode(((Local) ne.getOp()).getType());
}
else if(ne.getOp() instanceof DoubleConstant)
{
right = hierarchy.typeNode(DoubleType.v());
}
else if(ne.getOp() instanceof FloatConstant)
{
right = hierarchy.typeNode(FloatType.v());
}
else if(ne.getOp() instanceof IntConstant)
{
right = hierarchy.typeNode(IntType.v());
}
else if(ne.getOp() instanceof LongConstant)
{
right = hierarchy.typeNode(LongType.v());
}
else
{
throw new RuntimeException("Unhandled neg expression operand type: " + ne.getOp().getClass());
}
if(!left.hasDescendantOrSelf(right))
{
error("Type Error(40)");
}
}
else if(r instanceof Local)
{
if(!left.hasDescendantOrSelf(hierarchy.typeNode(((Local) r).getType())))
{
if(fix)
{
stmt.setRightOp(insertCast((Local) r, left.type(), stmt));
}
else
{
error("Type Error(41)");
}
}
}
else if(r instanceof InstanceFieldRef)
{
InstanceFieldRef ref = (InstanceFieldRef) r;
TypeNode baseType = hierarchy.typeNode(((Local) ref.getBase()).getType());
if(!baseType.hasAncestorOrSelf(hierarchy.typeNode(ref.getField().getDeclaringClass().getType())))
{
if(fix)
{
ref.setBase(insertCast((Local) ref.getBase(), ref.getField().getDeclaringClass().getType(), stmt));
}
else
{
error("Type Error(42)");
}
}
if(!left.hasDescendantOrSelf(hierarchy.typeNode(ref.getField().getType())))
{
error("Type Error(43)");
}
}
else if(r instanceof StaticFieldRef)
{
StaticFieldRef ref = (StaticFieldRef) r;
if(!left.hasDescendantOrSelf(hierarchy.typeNode(ref.getField().getType())))
{
error("Type Error(44)");
}
}
else
{
throw new RuntimeException("Unhandled assignment right hand side type: " + r.getClass());
}
}
public void caseIdentityStmt(IdentityStmt stmt)
{
TypeNode left = hierarchy.typeNode(((Local) stmt.getLeftOp()).getType());
Value r = stmt.getRightOp();
if(!(r instanceof CaughtExceptionRef))
{
TypeNode right = hierarchy.typeNode(r.getType());
if(!left.hasDescendantOrSelf(right))
{
error("Type Error(46) [" + left + " <- " + right + "]");
}
}
else
{
List exceptionTypes = TrapManager.getExceptionTypesOf(stmt, stmtBody);
Iterator typeIt = exceptionTypes.iterator();
while(typeIt.hasNext())
{
Type t = (Type) typeIt.next();
if(!left.hasDescendantOrSelf(hierarchy.typeNode(t)))
{
error("Type Error(47)");
}
}
if(!left.hasAncestorOrSelf(hierarchy.typeNode(RefType.v("java.lang.Throwable"))))
{
error("Type Error(48)");
}
}
}
public void caseEnterMonitorStmt(EnterMonitorStmt stmt)
{
if(stmt.getOp() instanceof Local)
{
TypeNode op = hierarchy.typeNode(((Local) stmt.getOp()).getType());
if(!op.hasAncestorOrSelf(hierarchy.typeNode(RefType.v("java.lang.Object"))))
{
error("Type Error(49)");
}
}
}
public void caseExitMonitorStmt(ExitMonitorStmt stmt)
{
if(stmt.getOp() instanceof Local)
{
TypeNode op = hierarchy.typeNode(((Local) stmt.getOp()).getType());
if(!op.hasAncestorOrSelf(hierarchy.typeNode(RefType.v("java.lang.Object"))))
{
error("Type Error(49)");
}
}
}
public void caseGotoStmt(GotoStmt stmt)
{
}
public void caseIfStmt(IfStmt stmt)
{
ConditionExpr cond = (ConditionExpr) stmt.getCondition();
BinopExpr expr = cond;
Value lv = expr.getOp1();
Value rv = expr.getOp2();
TypeNode lop;
TypeNode rop;
//******** LEFT ********
if(lv instanceof Local)
{
lop = hierarchy.typeNode(((Local) lv).getType());
}
else if(lv instanceof DoubleConstant)
{
lop = hierarchy.typeNode(DoubleType.v());
}
else if(lv instanceof FloatConstant)
{
lop = hierarchy.typeNode(FloatType.v());
}
else if(lv instanceof IntConstant)
{
lop = hierarchy.typeNode(IntType.v());
}
else if(lv instanceof LongConstant)
{
lop = hierarchy.typeNode(LongType.v());
}
else if(lv instanceof NullConstant)
{
lop = hierarchy.typeNode(NullType.v());
}
else if(lv instanceof StringConstant)
{
lop = hierarchy.typeNode(RefType.v("java.lang.String"));
}
else if(lv instanceof ClassConstant)
{
lop = hierarchy.typeNode(RefType.v("java.lang.Class"));
}
else
{
throw new RuntimeException("Unhandled binary expression left operand type: " + lv.getClass());
}
//******** RIGHT ********
if(rv instanceof Local)
{
rop = hierarchy.typeNode(((Local) rv).getType());
}
else if(rv instanceof DoubleConstant)
{
rop = hierarchy.typeNode(DoubleType.v());
}
else if(rv instanceof FloatConstant)
{
rop = hierarchy.typeNode(FloatType.v());
}
else if(rv instanceof IntConstant)
{
rop = hierarchy.typeNode(IntType.v());
}
else if(rv instanceof LongConstant)
{
rop = hierarchy.typeNode(LongType.v());
}
else if(rv instanceof NullConstant)
{
rop = hierarchy.typeNode(NullType.v());
}
else if(rv instanceof StringConstant)
{
rop = hierarchy.typeNode(RefType.v("java.lang.String"));
}
else if(rv instanceof ClassConstant)
{
rop = hierarchy.typeNode(RefType.v("java.lang.Class"));
}
else
{
throw new RuntimeException("Unhandled binary expression right operand type: " + rv.getClass());
}
try
{
lop.lca(rop);
}
catch(TypeException e)
{
error(e.getMessage());
}
}
public void caseLookupSwitchStmt(LookupSwitchStmt stmt)
{
Value key = stmt.getKey();
if(key instanceof Local)
{
if(!hierarchy.typeNode(((Local) key).getType()).hasAncestorOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(50)");
}
}
}
public void caseNopStmt(NopStmt stmt)
{
}
public void caseReturnStmt(ReturnStmt stmt)
{
if(stmt.getOp() instanceof Local)
{
if(!hierarchy.typeNode(((Local) stmt.getOp()).getType()).
hasAncestorOrSelf(hierarchy.typeNode(stmtBody.getMethod().getReturnType())))
{
if(fix)
{
stmt.setOp(insertCast((Local) stmt.getOp(), stmtBody.getMethod().getReturnType(), stmt));
}
else
{
error("Type Error(51)");
}
}
}
}
public void caseReturnVoidStmt(ReturnVoidStmt stmt)
{
}
public void caseTableSwitchStmt(TableSwitchStmt stmt)
{
Value key = stmt.getKey();
if(key instanceof Local)
{
if(!hierarchy.typeNode(((Local) key).getType()).hasAncestorOrSelf(hierarchy.typeNode(IntType.v())))
{
error("Type Error(52)");
}
}
}
public void caseThrowStmt(ThrowStmt stmt)
{
if(stmt.getOp() instanceof Local)
{
TypeNode op = hierarchy.typeNode(((Local) stmt.getOp()).getType());
if(!op.hasAncestorOrSelf(hierarchy.typeNode(RefType.v("java.lang.Throwable"))))
{
if(fix)
{
stmt.setOp(insertCast((Local) stmt.getOp(), RefType.v("java.lang.Throwable"), stmt));
}
else
{
error("Type Error(53)");
}
}
}
}
public void defaultCase(Stmt stmt)
{
throw new RuntimeException("Unhandled statement type: " + stmt.getClass());
}
private Local insertCast(Local oldlocal, Type type, Stmt stmt)
{
Local newlocal = Jimple.v().newLocal("tmp", type);
stmtBody.getLocals().add(newlocal);
stmtBody.getUnits().insertBefore(Jimple.v().newAssignStmt(newlocal, Jimple.v().newCastExpr(oldlocal, type)), stmt);
return newlocal;
}
}