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#pragma once
#include "json_value.h"
#include <library/cpp/json/common/defs.h>
#include <library/cpp/json/fast_sax/parser.h>
#include <util/generic/yexception.h>
#include <util/stream/input.h>
#include <util/stream/str.h>
#include <util/stream/mem.h>
namespace NJson {
struct TJsonReaderConfig {
TJsonReaderConfig();
bool UseIterativeParser = false;
// js-style comments (both // and /**/)
bool AllowComments = false;
bool DontValidateUtf8 = false;
bool AllowEscapedApostrophe = false;
ui64 MaxDepth = 0;
void SetBufferSize(size_t bufferSize);
size_t GetBufferSize() const;
private:
size_t BufferSize;
};
bool ReadJsonTree(TStringBuf in, TJsonValue* out, bool throwOnError = false);
bool ReadJsonTree(TStringBuf in, bool allowComments, TJsonValue* out, bool throwOnError = false);
bool ReadJsonTree(TStringBuf in, const TJsonReaderConfig* config, TJsonValue* out, bool throwOnError = false);
bool ReadJsonTree(IInputStream* in, TJsonValue* out, bool throwOnError = false);
bool ReadJsonTree(IInputStream* in, bool allowComments, TJsonValue* out, bool throwOnError = false);
bool ReadJsonTree(IInputStream* in, const TJsonReaderConfig* config, TJsonValue* out, bool throwOnError = false);
TJsonValue ReadJsonTree(IInputStream* in, bool throwOnError = false);
TJsonValue ReadJsonTree(IInputStream* in, bool allowComments, bool throwOnError);
TJsonValue ReadJsonTree(IInputStream* in, const TJsonReaderConfig* config, bool throwOnError = false);
bool ReadJson(IInputStream* in, TJsonCallbacks* callbacks);
bool ReadJson(IInputStream* in, bool allowComments, TJsonCallbacks* callbacks);
bool ReadJson(IInputStream* in, bool allowComments, bool allowEscapedApostrophe, TJsonCallbacks* callbacks);
bool ReadJson(IInputStream* in, const TJsonReaderConfig* config, TJsonCallbacks* callbacks);
enum ReaderConfigFlags {
ITERATIVE = 0b1000,
COMMENTS = 0b0100,
VALIDATE = 0b0010,
ESCAPE = 0b0001,
};
inline bool ValidateJson(IInputStream* in, const TJsonReaderConfig* config, bool throwOnError = false) {
TJsonCallbacks c(throwOnError);
return ReadJson(in, config, &c);
}
inline bool ValidateJson(TStringBuf in, const TJsonReaderConfig& config = TJsonReaderConfig(), bool throwOnError = false) {
TMemoryInput min(in.data(), in.size());
return ValidateJson(&min, &config, throwOnError);
}
inline bool ValidateJsonThrow(IInputStream* in, const TJsonReaderConfig* config) {
return ValidateJson(in, config, true);
}
inline bool ValidateJsonThrow(TStringBuf in, const TJsonReaderConfig& config = TJsonReaderConfig()) {
return ValidateJson(in, config, true);
}
class TParserCallbacks: public TJsonCallbacks {
public:
TParserCallbacks(TJsonValue& value, bool throwOnError = false, bool notClosedBracketIsError = false);
bool OnNull() override;
bool OnBoolean(bool val) override;
bool OnInteger(long long val) override;
bool OnUInteger(unsigned long long val) override;
bool OnString(const TStringBuf& val) override;
bool OnDouble(double val) override;
bool OnOpenArray() override;
bool OnCloseArray() override;
bool OnOpenMap() override;
bool OnCloseMap() override;
bool OnMapKey(const TStringBuf& val) override;
bool OnEnd() override;
protected:
TJsonValue& Value;
TString Key;
TVector<TJsonValue*> ValuesStack;
bool NotClosedBracketIsError;
enum {
START,
AFTER_MAP_KEY,
IN_MAP,
IN_ARRAY,
FINISH
} CurrentState;
template <class T>
bool SetValue(const T& value) {
switch (CurrentState) {
case START:
Value.SetValue(value);
break;
case AFTER_MAP_KEY:
ValuesStack.back()->InsertValue(Key, value);
CurrentState = IN_MAP;
break;
case IN_ARRAY:
ValuesStack.back()->AppendValue(value);
break;
case IN_MAP:
case FINISH:
return false;
default:
ythrow yexception() << "TParserCallbacks::SetValue invalid enum";
}
return true;
}
bool OpenComplexValue(EJsonValueType type);
bool CloseComplexValue();
};
//// relaxed json, used in library/cpp/scheme
bool ReadJsonFastTree(TStringBuf in, TJsonValue* out, bool throwOnError = false, bool notClosedBracketIsError = false);
TJsonValue ReadJsonFastTree(TStringBuf in, bool notClosedBracketIsError = false);
}
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