private Element getInvokeOfSafeInitMethod()

in nullaway/src/main/java/com/uber/nullaway/NullAway.java [2177:2209]
31 lines of code
11 McCabe index (conditional complexity)

  private Element getInvokeOfSafeInitMethod(
      StatementTree stmt, final Symbol.ClassSymbol enclosingClassSymbol, VisitorState state) {
    Matcher<ExpressionTree> invokeMatcher =
        (expressionTree, s) -> {
          if (!(expressionTree instanceof MethodInvocationTree)) {
            return false;
          }
          MethodInvocationTree methodInvocationTree = (MethodInvocationTree) expressionTree;
          Symbol.MethodSymbol symbol = ASTHelpers.getSymbol(methodInvocationTree);
          Set<Modifier> modifiers = symbol.getModifiers();
          Set<Modifier> classModifiers = enclosingClassSymbol.getModifiers();
          if ((symbol.isPrivate()
                  || modifiers.contains(Modifier.FINAL)
                  || classModifiers.contains(Modifier.FINAL))
              && !symbol.isStatic()
              && !modifiers.contains(Modifier.NATIVE)) {
            // check it's the same class (could be an issue with inner classes)
            if (castToNonNull(ASTHelpers.enclosingClass(symbol)).equals(enclosingClassSymbol)) {
              // make sure the receiver is 'this'
              ExpressionTree receiver = ASTHelpers.getReceiver(expressionTree);
              return receiver == null || isThisIdentifier(receiver);
            }
          }
          return false;
        };
    if (stmt.getKind().equals(EXPRESSION_STATEMENT)) {
      ExpressionTree expression = ((ExpressionStatementTree) stmt).getExpression();
      if (invokeMatcher.matches(expression, state)) {
        return ASTHelpers.getSymbol(expression);
      }
    }
    return null;
  }