private boolean isIteratorNext( PsiElement element, String iteratorName, PsiType contentType) { if (element == null) { return false; } if (element instanceof PsiTypeCastExpression) { final PsiTypeCastExpression castExpression = (PsiTypeCastExpression)element; final PsiType type = castExpression.getType(); if (type == null) { return false; } if (!type.equals(contentType)) { return false; } final PsiExpression operand = castExpression.getOperand(); return isIteratorNext(operand, iteratorName, contentType); } if (!(element instanceof PsiMethodCallExpression)) { return false; } final PsiMethodCallExpression callExpression = (PsiMethodCallExpression)element; final PsiExpressionList argumentList = callExpression.getArgumentList(); final PsiExpression[] args = argumentList.getExpressions(); if (args.length != 0) { return false; } final PsiReferenceExpression reference = callExpression.getMethodExpression(); final PsiExpression qualifier = reference.getQualifierExpression(); if (qualifier == null) { return false; } if (!iteratorName.equals(qualifier.getText())) { return false; } final String referenceName = reference.getReferenceName(); return HardcodedMethodConstants.NEXT.equals(referenceName); }
@Override public void visitTypeCastExpression(@NotNull PsiTypeCastExpression expression) { super.visitTypeCastExpression(expression); final PsiExpression operand = expression.getOperand(); if (operand == null) { return; } final PsiType operandType = operand.getType(); if (operandType == null) { return; } final PsiType type = expression.getType(); if (type == null) { return; } final PsiType expectedType = ExpectedTypeUtils.findExpectedType(expression, true); if (expectedType == null) { return; } if (expectedType.equals(type)) { return; } final PsiClass resolved = PsiUtil.resolveClassInType(expectedType); if (resolved != null && !resolved.isPhysical()) { return; } if (expectedType.isAssignableFrom(operandType)) { // then it's redundant, and caught by the built-in exception return; } if (isTypeParameter(expectedType)) { return; } if (expectedType instanceof PsiArrayType) { final PsiArrayType arrayType = (PsiArrayType) expectedType; final PsiType componentType = arrayType.getDeepComponentType(); if (isTypeParameter(componentType)) { return; } } if (type instanceof PsiPrimitiveType || expectedType instanceof PsiPrimitiveType) { return; } if (PsiPrimitiveType.getUnboxedType(type) != null || PsiPrimitiveType.getUnboxedType(expectedType) != null) { return; } if (expectedType instanceof PsiClassType) { final PsiClassType expectedClassType = (PsiClassType) expectedType; final PsiClassType expectedRawType = expectedClassType.rawType(); if (type.equals(expectedRawType)) { return; } if (type instanceof PsiClassType) { final PsiClassType classType = (PsiClassType) type; final PsiClassType rawType = classType.rawType(); if (rawType.equals(expectedRawType)) { return; } } if (type instanceof PsiArrayType) { return; } } if (ignoreInMatchingInstanceof && InstanceOfUtils.hasAgreeingInstanceof(expression)) { return; } final PsiTypeElement castTypeElement = expression.getCastType(); if (castTypeElement == null) { return; } registerError(castTypeElement, expectedType); }