1 | #pragma once |
2 | |
3 | #include <common/StringRef.h> |
4 | #include <Common/Exception.h> |
5 | #include <Core/Types.h> |
6 | |
7 | namespace DB |
8 | { |
9 | namespace ErrorCodes |
10 | { |
11 | extern const int NOT_IMPLEMENTED; |
12 | } |
13 | |
14 | /// This class can be used as an argument for the template class FunctionJSON when we unable to parse JSONs. |
15 | /// It can't do anything useful and just throws an exception. |
16 | struct DummyJSONParser |
17 | { |
18 | static constexpr bool need_preallocate = false; |
19 | void preallocate(size_t) {} |
20 | |
21 | bool parse(const StringRef &) { throw Exception{"Functions JSON* are not supported without AVX2" , ErrorCodes::NOT_IMPLEMENTED}; } |
22 | |
23 | using Iterator = std::nullptr_t; |
24 | Iterator getRoot() const { return nullptr; } |
25 | |
26 | static bool isInt64(const Iterator &) { return false; } |
27 | static bool isUInt64(const Iterator &) { return false; } |
28 | static bool isDouble(const Iterator &) { return false; } |
29 | static bool isString(const Iterator &) { return false; } |
30 | static bool isArray(const Iterator &) { return false; } |
31 | static bool isObject(const Iterator &) { return false; } |
32 | static bool isBool(const Iterator &) { return false; } |
33 | static bool isNull(const Iterator &) { return true; } |
34 | |
35 | static Int64 getInt64(const Iterator &) { return 0; } |
36 | static UInt64 getUInt64(const Iterator &) { return 0; } |
37 | static double getDouble(const Iterator &) { return 0; } |
38 | static bool getBool(const Iterator &) { return false; } |
39 | static StringRef getString(const Iterator &) { return {}; } |
40 | |
41 | static size_t sizeOfArray(const Iterator &) { return 0; } |
42 | static bool firstArrayElement(Iterator &) { return false; } |
43 | static bool arrayElementByIndex(Iterator &, size_t) { return false; } |
44 | static bool nextArrayElement(Iterator &) { return false; } |
45 | |
46 | static size_t sizeOfObject(const Iterator &) { return 0; } |
47 | static bool firstObjectMember(Iterator &) { return false; } |
48 | static bool firstObjectMember(Iterator &, StringRef &) { return false; } |
49 | static bool objectMemberByIndex(Iterator &, size_t) { return false; } |
50 | static bool objectMemberByName(Iterator &, const StringRef &) { return false; } |
51 | static bool nextObjectMember(Iterator &) { return false; } |
52 | static bool nextObjectMember(Iterator &, StringRef &) { return false; } |
53 | static bool isObjectMember(const Iterator &) { return false; } |
54 | static StringRef getKey(const Iterator &) { return {}; } |
55 | }; |
56 | |
57 | } |
58 | |