public StatementVisitor(CGNode node, IR ir, DefUse du) {
this.node = node;
this.ir = ir;
this.symbolTable = ir.getSymbolTable();
assert symbolTable != null;
this.du = du;
}
// add inter-procedural flow for local calls
private void resolveLocalCalls(FlowGraph flowgraph) {
for (IClass klass : cha) {
for (IMethod method : klass.getDeclaredMethods()) {
if (filterFunction(method)) {
IR ir = cache.getIR(method);
ir.visitAllInstructions(
new LocalCallSSAVisitor(method, ir.getSymbolTable(), cache.getDefUse(ir), flowgraph));
}
}
}
}
/**
* add nodes for parameters and return values
*
* @param node
*/
private void addNodesForParameters(CGNode node) {
// TODO Auto-generated method stub
IR ir = node.getIR();
TypeInference ti = TypeInference.make(ir, false);
SymbolTable symbolTable = ir.getSymbolTable();
for (int i = 0; i < symbolTable.getNumberOfParameters(); i++) {
int parameter = symbolTable.getParameter(i);
TypeAbstraction t = ti.getType(parameter);
if (t != null) {
PointerKey paramPk = heapModel.getPointerKeyForLocal(node, parameter);
addNode(paramPk);
params.put(paramPk, node);
}
}
addNode(heapModel.getPointerKeyForReturnValue(node));
addNode(heapModel.getPointerKeyForExceptionalReturnValue(node));
}
/** Taken from com.ibm.wala.viz.PDFViewUtil */
@Override
public String getText(Object element) {
if (element instanceof BasicBlock) {
BasicBlock bb = (BasicBlock) element;
IR ir = irView.getIR();
StringBuilder result = new StringBuilder();
int start = bb.getFirstInstructionIndex();
int end = bb.getLastInstructionIndex();
result.append("BB").append(bb.getNumber());
if (bb.isEntryBlock()) {
result.append(" (en)\n");
} else if (bb.isExitBlock()) {
result.append(" (ex)\n");
}
if (bb instanceof ExceptionHandlerBasicBlock) {
result.append("<Handler>");
}
result.append("\n");
for (Iterator<SSAPhiInstruction> it = bb.iteratePhis(); it.hasNext(); ) {
SSAPhiInstruction phi = it.next();
if (phi != null) {
result.append(phi.toString(ir.getSymbolTable())).append("\n");
}
}
if (bb instanceof ExceptionHandlerBasicBlock) {
ExceptionHandlerBasicBlock ebb = (ExceptionHandlerBasicBlock) bb;
SSAGetCaughtExceptionInstruction s = ebb.getCatchInstruction();
if (s != null) {
result.append(s.toString(ir.getSymbolTable())).append("\n");
} else {
result.append(" No catch instruction. Unreachable?\n");
}
}
SSAInstruction[] instructions = ir.getInstructions();
IMethod method = ir.getMethod();
for (int j = start; j <= end; j++) {
if (instructions[j] != null) {
String x;
int sourceLineNum = method.getLineNumber(j);
x =
String.format(
j + " [L%03d] " + instructions[j].toString(ir.getSymbolTable()), sourceLineNum);
String padded = String.format("%1$-35s", x);
result.append(padded);
result.append("\n");
result.append(SSAValuesToLocalVariables(instructions[j], j, ir));
result.append("\n");
}
}
for (Iterator<SSAPiInstruction> it = bb.iteratePis(); it.hasNext(); ) {
SSAPiInstruction pi = it.next();
if (pi != null) {
result.append(" " + pi.toString(ir.getSymbolTable())).append("\n");
}
}
return result.toString();
}
if (element instanceof EntityConnectionData) {
return "\n";
}
return "";
}
private IMethod makeFunctionConstructor(
IR callerIR, SSAAbstractInvokeInstruction callStmt, IClass cls, int nargs) {
SymbolTable ST = callerIR.getSymbolTable();
if (nargs == 0) {
return makeFunctionConstructor(cls, cls);
} else if (nargs == 1) {
if (ST.isStringConstant(callStmt.getUse(1))) {
TypeReference ref =
TypeReference.findOrCreate(
JavaScriptTypes.jsLoader,
TypeName.string2TypeName((String) ST.getStringValue(callStmt.getUse(1))));
if (DEBUG) {
System.err.println(
("ctor type name is " + (String) ST.getStringValue(callStmt.getUse(1))));
}
IClass cls2 = cha.lookupClass(ref);
if (cls2 != null) {
return makeFunctionConstructor(cls, cls2);
}
}
return makeFunctionConstructor(cls, cls);
} else {
assert nargs > 1;
JavaScriptLoader cl = (JavaScriptLoader) cha.getLoader(JavaScriptTypes.jsLoader);
for (int i = 1; i < callStmt.getNumberOfUses(); i++)
if (!ST.isStringConstant(callStmt.getUse(i))) return makeFunctionConstructor(cls, cls);
StringBuffer fun = new StringBuffer("function _fromctor (");
for (int j = 1; j < callStmt.getNumberOfUses() - 1; j++) {
if (j != 1) fun.append(",");
fun.append(ST.getStringValue(callStmt.getUse(j)));
}
fun.append(") {");
fun.append(ST.getStringValue(callStmt.getUse(callStmt.getNumberOfUses() - 1)));
fun.append("}");
try {
String fileName = "ctor$" + ++ctorCount;
File f = new File(System.getProperty("java.io.tmpdir") + File.separator + fileName);
FileWriter FO = new FileWriter(f);
FO.write(fun.toString());
FO.close();
Set<String> fnNames =
JSCallGraphUtil.loadAdditionalFile(cha, cl, fileName, f.toURI().toURL());
IClass fcls = null;
for (String nm : fnNames) {
if (nm.endsWith("_fromctor")) {
fcls = cl.lookupClass(nm, cha);
}
}
assert fcls != null : "cannot find class for " + fileName + " in " + f;
f.delete();
if (DEBUG) System.err.println(("looking for ctor " + ctorCount + " and got " + fcls));
if (fcls != null) return makeFunctionConstructor(cls, fcls);
} catch (IOException e) {
}
return makeFunctionConstructor(cls, cls);
}
}