LookaheadParser Class Reference

Inheritance diagram for LookaheadParser:

Collaboration diagram for LookaheadParser:

Public Member Functions
	LookaheadParser (char *str)
bool	EnterObject ()
bool	EnterArray ()
const char *	NextObjectKey ()
bool	NextArrayValue ()
int	GetInt ()
double	GetDouble ()
const char *	GetString ()
bool	GetBool ()
void	GetNull ()
void	SkipObject ()
void	SkipArray ()
void	SkipValue ()
Value *	PeekValue ()
int	PeekType ()
bool	IsValid ()

Protected Member Functions
void	SkipOut (int depth)
Protected Member Functions inherited from LookaheadParserHandler
	LookaheadParserHandler (char *str)
void	ParseNext ()
bool	Null ()
bool	Bool (bool b)
bool	Int (int i)
bool	Uint (unsigned u)
bool	Int64 (int64_t i)
bool	Uint64 (uint64_t u)
bool	Double (double d)
bool	RawNumber (const char *, SizeType, bool)
bool	String (const char *str, SizeType length, bool)
bool	StartObject ()
bool	Key (const char *str, SizeType length, bool)
bool	EndObject (SizeType)
bool	StartArray ()
bool	EndArray (SizeType)

Additional Inherited Members
Protected Types inherited from LookaheadParserHandler
enum	LookaheadParsingState {   kInit , kError , kHasNull , kHasBool ,   kHasNumber , kHasString , kHasKey , kEnteringObject ,   kExitingObject , kEnteringArray , kExitingArray }
Protected Attributes inherited from LookaheadParserHandler
Value	v_
LookaheadParsingState	st_
Reader	r_
InsituStringStream	ss_
Static Protected Attributes inherited from LookaheadParserHandler
static const int	parseFlags = kParseDefaultFlags | kParseInsituFlag

Detailed Description

Definition at line 101 of file lookaheadparser.cpp.

Constructor & Destructor Documentation

LookaheadParser()

LookaheadParser::LookaheadParser ( char * str )

inline

Definition at line 103 of file lookaheadparser.cpp.

: LookaheadParserHandler(str) {}

Member Function Documentation

EnterArray()

bool LookaheadParser::EnterArray

(

)

Definition at line 137 of file lookaheadparser.cpp.

                                 {
    if (st_ != kEnteringArray) {
        st_  = kError;
        return false;
    }
    
    ParseNext();
    return true;
}

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EnterObject()

bool LookaheadParser::EnterObject

(

)

Definition at line 127 of file lookaheadparser.cpp.

                                  {
    if (st_ != kEnteringObject) {
        st_  = kError;
        return false;
    }
    
    ParseNext();
    return true;
}

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GetBool()

bool LookaheadParser::GetBool

(

)

Definition at line 199 of file lookaheadparser.cpp.

                              {
    if (st_ != kHasBool) {
        st_  = kError;
        return false;
    }
    
    bool result = v_.GetBool();
    ParseNext();
    return result;
}

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GetDouble()

double LookaheadParser::GetDouble

(

)

Definition at line 188 of file lookaheadparser.cpp.

                                  {
    if (st_ != kHasNumber) {
        st_  = kError;
        return 0.;
    }
    
    double result = v_.GetDouble();
    ParseNext();
    return result;
}

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GetInt()

int LookaheadParser::GetInt

(

)

Definition at line 177 of file lookaheadparser.cpp.

                            {
    if (st_ != kHasNumber || !v_.IsInt()) {
        st_ = kError;
        return 0;
    }
 
    int result = v_.GetInt();
    ParseNext();
    return result;
}

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GetNull()

void LookaheadParser::GetNull

(

)

Definition at line 210 of file lookaheadparser.cpp.

                              {
    if (st_ != kHasNull) {
        st_  = kError;
        return;
    }
 
    ParseNext();
}

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GetString()

const char * LookaheadParser::GetString

(

)

Definition at line 219 of file lookaheadparser.cpp.

                                       {
    if (st_ != kHasString) {
        st_  = kError;
        return 0;
    }
    
    const char* result = v_.GetString();
    ParseNext();
    return result;
}

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IsValid()

bool LookaheadParser::IsValid ( )

inline

Definition at line 121 of file lookaheadparser.cpp.

{ return st_ != kError; }

NextArrayValue()

bool LookaheadParser::NextArrayValue

(

)

Definition at line 163 of file lookaheadparser.cpp.

                                     {
    if (st_ == kExitingArray) {
        ParseNext();
        return false;
    }
    
    if (st_ == kError || st_ == kExitingObject || st_ == kHasKey) {
        st_ = kError;
        return false;
    }
 
    return true;
}

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NextObjectKey()

const char * LookaheadParser::NextObjectKey

(

)

Definition at line 147 of file lookaheadparser.cpp.

                                           {
    if (st_ == kHasKey) {
        const char* result = v_.GetString();
        ParseNext();
        return result;
    }
    
    if (st_ != kExitingObject) {
        st_ = kError;
        return 0;
    }
    
    ParseNext();
    return 0;
}

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PeekType()

int LookaheadParser::PeekType

(

)

Definition at line 267 of file lookaheadparser.cpp.

                              {
    if (st_ >= kHasNull && st_ <= kHasKey) {
        return v_.GetType();
    }
    
    if (st_ == kEnteringArray) {
        return kArrayType;
    }
    
    if (st_ == kEnteringObject) {
        return kObjectType;
    }
 
    return -1;
}

PeekValue()

Value * LookaheadParser::PeekValue

(

)

Definition at line 259 of file lookaheadparser.cpp.

                                  {
    if (st_ >= kHasNull && st_ <= kHasKey) {
        return &v_;
    }
    
    return 0;
}

SkipArray()

void LookaheadParser::SkipArray

(

)

Definition at line 251 of file lookaheadparser.cpp.

                                {
    SkipOut(1);
}

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SkipObject()

void LookaheadParser::SkipObject

(

)

Definition at line 255 of file lookaheadparser.cpp.

                                 {
    SkipOut(1);
}

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SkipOut()

void LookaheadParser::SkipOut ( int depth )

protected

Definition at line 230 of file lookaheadparser.cpp.

                                       {
    do {
        if (st_ == kEnteringArray || st_ == kEnteringObject) {
            ++depth;
        }
        else if (st_ == kExitingArray || st_ == kExitingObject) {
            --depth;
        }
        else if (st_ == kError) {
            return;
        }
 
        ParseNext();
    }
    while (depth > 0);
}

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SkipValue()

void LookaheadParser::SkipValue

(

)

Definition at line 247 of file lookaheadparser.cpp.

                                {
    SkipOut(0);
}

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The documentation for this class was generated from the following file:

• libraries/fc/include/fc/crypto/webauthn_json/example/lookaheadparser/lookaheadparser.cpp