public void visitClosure(GrClosableBlock closure) {
// do not go inside closures except gstring injections
if (closure.getParent() instanceof GrStringInjection) {
for (GrParameter parameter : closure.getAllParameters()) {
if (myPolicy.isVariableInitialized(parameter)) {
addNode(new ReadWriteVariableInstruction(parameter.getName(), parameter, WRITE));
}
}
addNode(new ReadWriteVariableInstruction("owner", closure.getLBrace(), WRITE));
super.visitClosure(closure);
return;
}
ReadWriteVariableInstruction[] reads =
ControlFlowBuilderUtil.getReadsWithoutPriorWrites(closure.getControlFlow(), false);
for (ReadWriteVariableInstruction read : reads) {
PsiElement element = read.getElement();
if (!(element instanceof GrReferenceExpression)
|| myPolicy.isReferenceAccepted((GrReferenceExpression) element)) {
addNodeAndCheckPending(
new ReadWriteVariableInstruction(read.getVariableName(), closure, READ));
}
}
addNodeAndCheckPending(new InstructionImpl(closure));
}
public void visitReferenceExpression(GrReferenceExpression refExpr) {
super.visitReferenceExpression(refExpr);
if (myPolicy.isReferenceAccepted(refExpr)) {
String name = refExpr.getReferenceName();
if (name == null) return;
if (ControlFlowUtils.isIncOrDecOperand(refExpr)) {
final InstructionImpl i = new ReadWriteVariableInstruction(name, refExpr, READ);
addNodeAndCheckPending(i);
addNode(new ReadWriteVariableInstruction(name, refExpr, WRITE));
} else {
final int type = PsiUtil.isLValue(refExpr) ? WRITE : READ;
addNodeAndCheckPending(new ReadWriteVariableInstruction(name, refExpr, type));
if (refExpr.getParent() instanceof GrArgumentList
&& refExpr.getParent().getParent() instanceof GrCall) {
addNodeAndCheckPending(new ArgumentInstruction(refExpr));
}
}
}
if (refExpr.isQualified() && !(refExpr.getParent() instanceof GrCall)) {
visitCall(refExpr);
}
}
private void flushForeachLoopVariable(@Nullable GrForClause clause) {
if (clause instanceof GrForInClause) {
GrVariable variable = clause.getDeclaredVariable();
if (variable != null && myPolicy.isVariableInitialized(variable)) {
addNodeAndCheckPending(
new ReadWriteVariableInstruction(variable.getName(), variable, WRITE));
}
}
}
public void visitVariable(GrVariable variable) {
super.visitVariable(variable);
if (myPolicy.isVariableInitialized(variable)) {
ReadWriteVariableInstruction writeInst =
new ReadWriteVariableInstruction(variable.getName(), variable, WRITE);
addNodeAndCheckPending(writeInst);
}
}
public void visitTypeDefinition(final GrTypeDefinition typeDefinition) {
if (!(typeDefinition instanceof GrAnonymousClassDefinition)) return;
final Set<ReadWriteVariableInstruction> vars =
collectUsedVariableWithoutInitialization(typeDefinition);
for (ReadWriteVariableInstruction var : vars) {
PsiElement element = var.getElement();
if (!(element instanceof GrReferenceExpression)
|| myPolicy.isReferenceAccepted((GrReferenceExpression) element)) {
addNodeAndCheckPending(
new ReadWriteVariableInstruction(var.getVariableName(), typeDefinition, READ));
}
}
addNodeAndCheckPending(new InstructionImpl(typeDefinition));
}
public void visitAssignmentExpression(GrAssignmentExpression expression) {
GrExpression lValue = expression.getLValue();
if (expression.getOperationTokenType() != mASSIGN) {
if (lValue instanceof GrReferenceExpression
&& myPolicy.isReferenceAccepted((GrReferenceExpression) lValue)) {
String referenceName = ((GrReferenceExpression) lValue).getReferenceName();
if (referenceName != null) {
addNodeAndCheckPending(new ReadWriteVariableInstruction(referenceName, lValue, READ));
}
}
}
GrExpression rValue = expression.getRValue();
if (rValue != null) {
rValue.accept(this);
lValue.accept(this);
}
}
public void visitOpenBlock(GrOpenBlock block) {
final PsiElement parent = block.getParent();
final PsiElement lbrace = block.getLBrace();
if (lbrace != null && parent instanceof GrMethod) {
for (GrParameter parameter : ((GrMethod) parent).getParameters()) {
if (myPolicy.isVariableInitialized(parameter)) {
addNode(new ReadWriteVariableInstruction(parameter.getName(), parameter, WRITE));
}
}
}
super.visitOpenBlock(block);
if (!(block.getParent() instanceof GrBlockStatement
&& block.getParent().getParent() instanceof GrLoopStatement)) {
final GrStatement[] statements = block.getStatements();
if (statements.length > 0) {
handlePossibleReturn(statements[statements.length - 1]);
}
}
}
private void buildFlowForClosure(final GrClosableBlock closure) {
for (GrParameter parameter : closure.getAllParameters()) {
if (myPolicy.isVariableInitialized(parameter)) {
addNode(new ReadWriteVariableInstruction(parameter.getName(), parameter, WRITE));
}
}
addNode(new ReadWriteVariableInstruction("owner", closure.getLBrace(), WRITE));
PsiElement child = closure.getFirstChild();
while (child != null) {
if (child instanceof GroovyPsiElement) {
((GroovyPsiElement) child).accept(this);
}
child = child.getNextSibling();
}
final GrStatement[] statements = closure.getStatements();
if (statements.length > 0) {
handlePossibleReturn(statements[statements.length - 1]);
}
}
public void visitTryStatement(GrTryCatchStatement tryCatchStatement) {
final GrOpenBlock tryBlock = tryCatchStatement.getTryBlock();
final GrCatchClause[] catchClauses = tryCatchStatement.getCatchClauses();
final GrFinallyClause finallyClause = tryCatchStatement.getFinallyClause();
for (int i = catchClauses.length - 1; i >= 0; i--) {
myCaughtExceptionInfos.push(new ExceptionInfo(catchClauses[i]));
}
if (finallyClause != null) myFinallyCount++;
List<Pair<InstructionImpl, GroovyPsiElement>> oldPending = null;
if (finallyClause != null) {
oldPending = myPending;
myPending = new ArrayList<Pair<InstructionImpl, GroovyPsiElement>>();
}
InstructionImpl tryBegin = startNode(tryBlock);
tryBlock.accept(this);
InstructionImpl tryEnd = myHead;
finishNode(tryBegin);
Set<Pair<InstructionImpl, GroovyPsiElement>> pendingAfterTry =
new LinkedHashSet<Pair<InstructionImpl, GroovyPsiElement>>(myPending);
@SuppressWarnings("unchecked")
List<InstructionImpl>[] throwers = new List[catchClauses.length];
for (int i = 0; i < catchClauses.length; i++) {
throwers[i] = myCaughtExceptionInfos.pop().myThrowers;
}
InstructionImpl[] catches = new InstructionImpl[catchClauses.length];
for (int i = 0; i < catchClauses.length; i++) {
interruptFlow();
final InstructionImpl catchBeg = startNode(catchClauses[i]);
for (InstructionImpl thrower : throwers[i]) {
addEdge(thrower, catchBeg);
}
final GrParameter parameter = catchClauses[i].getParameter();
if (parameter != null && myPolicy.isVariableInitialized(parameter)) {
addNode(new ReadWriteVariableInstruction(parameter.getName(), parameter, WRITE));
}
catchClauses[i].accept(this);
catches[i] = myHead;
finishNode(catchBeg);
}
pendingAfterTry.addAll(myPending);
myPending = new ArrayList<Pair<InstructionImpl, GroovyPsiElement>>(pendingAfterTry);
if (finallyClause != null) {
myFinallyCount--;
interruptFlow();
final InstructionImpl finallyInstruction = startNode(finallyClause, false);
Set<AfterCallInstruction> postCalls = new LinkedHashSet<AfterCallInstruction>();
final List<Pair<InstructionImpl, GroovyPsiElement>> copy = myPending;
myPending = new ArrayList<Pair<InstructionImpl, GroovyPsiElement>>();
for (Pair<InstructionImpl, GroovyPsiElement> pair : copy) {
postCalls.add(addCallNode(finallyInstruction, pair.getSecond(), pair.getFirst()));
}
if (tryEnd != null) {
postCalls.add(addCallNode(finallyInstruction, tryCatchStatement, tryEnd));
}
for (InstructionImpl catchEnd : catches) {
if (catchEnd != null) {
postCalls.add(addCallNode(finallyInstruction, tryCatchStatement, catchEnd));
}
}
// save added postcalls into separate list because we don't want returnInstruction grabbed
// their pending edges
List<Pair<InstructionImpl, GroovyPsiElement>> pendingPostCalls = myPending;
myPending = new ArrayList<Pair<InstructionImpl, GroovyPsiElement>>();
myHead = finallyInstruction;
finallyClause.accept(this);
final ReturnInstruction returnInstruction = new ReturnInstruction(finallyClause);
for (AfterCallInstruction postCall : postCalls) {
postCall.setReturnInstruction(returnInstruction);
addEdge(returnInstruction, postCall);
}
addNodeAndCheckPending(returnInstruction);
interruptFlow();
finishNode(finallyInstruction);
if (oldPending == null) {
error();
}
oldPending.addAll(pendingPostCalls);
myPending = oldPending;
} else {
if (tryEnd != null) {
addPendingEdge(tryCatchStatement, tryEnd);
}
for (InstructionImpl catchEnd : catches) {
addPendingEdge(tryBlock, catchEnd);
}
}
}