public Predicate getAccessPathPredicateForNestedMethod()

in nullaway/src/main/java/com/uber/nullaway/handlers/SynchronousCallbackHandler.java [51:93]
42 lines of code
12 McCabe index (conditional complexity)

  public Predicate<AccessPath> getAccessPathPredicateForNestedMethod(
      TreePath path, VisitorState state) {
    Tree leafNode = path.getLeaf();
    Preconditions.checkArgument(
        leafNode instanceof ClassTree || leafNode instanceof LambdaExpressionTree,
        "Unexpected leaf type: %s",
        leafNode.getClass());
    Tree parentNode = path.getParentPath().getLeaf();
    if (parentNode instanceof MethodInvocationTree) {
      MethodInvocationTree methodInvocationTree = (MethodInvocationTree) parentNode;
      Symbol.MethodSymbol symbol = ASTHelpers.getSymbol(methodInvocationTree);
      if (symbol == null) {
        return FALSE_AP_PREDICATE;
      }
      Type ownerType = symbol.owner.type;
      if (ASTHelpers.isSameType(ownerType, STREAM_TYPE_SUPPLIER.get(state), state)) {
        // preserve access paths for all callbacks passed to stream methods
        return TRUE_AP_PREDICATE;
      }
      String invokedMethodName = symbol.getSimpleName().toString();
      if (METHOD_NAME_TO_SIG_AND_PARAM_INDEX.containsKey(invokedMethodName)) {
        ImmutableMap<MethodRef, Integer> entriesForMethodName =
            METHOD_NAME_TO_SIG_AND_PARAM_INDEX.get(invokedMethodName);
        for (MethodRef methodRef : entriesForMethodName.keySet()) {
          if (symbol.toString().equals(methodRef.fullMethodSig)
              && ASTHelpers.isSubtype(
                  ownerType, state.getTypeFromString(methodRef.enclosingClass), state)) {
            int parameterIndex = -1;
            for (int i = 0; i < methodInvocationTree.getArguments().size(); i++) {
              if (methodInvocationTree.getArguments().get(i) == leafNode) {
                parameterIndex = i;
                break;
              }
            }
            if (parameterIndex == entriesForMethodName.get(methodRef)) {
              return TRUE_AP_PREDICATE;
            }
          }
        }
      }
    }
    return FALSE_AP_PREDICATE;
  }