jvar::Parser Class Reference

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Detailed Description

Parser class implements a text parser which follows simple rules to build tokens. .Sequence of letters, digits, and '_' is a token .Opening or a closing bracket is a token .Sequence of punctuation symbols like * - ; = , etc is a token .Sequence of characters beginning and ending with a quote is a token (escape chars are consistent with JSON) .Whitespace is ignored except in quotes

#include <str.h>

Inheritance diagram for jvar::Parser:

Public Member Functions
	Parser (const char *txt)
bool	eof ()
bool	failed ()
const std::string &	errMsg ()
const char *	c_str ()
const std::string &	token ()
bool	tokenEquals (const char *val)
void	advance ()
void	advance (const char *match)
void	setError (const char *msg)
void	stripQuotes (bool allowsingle)
void	captureDelim (const char *delim)
Protected Member Functions
bool	charWord (char c)
bool	charPunc (char c)
bool	charBrac (char c)

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Constructor & Destructor Documentation

jvar::Parser::Parser

(

const char *

txt

)

Constructor

Parameters:

txt	Text to parse

References setError().

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Member Function Documentation

void jvar::Parser::advance

(

)

[inline]

Advances to the next token by parsing it

Referenced by advance(), jvar::JsonParser::JsonParser(), and jvar::Variant::path().

void jvar::Parser::advance

(

const char *

match

)

Advances if a matching token is found

Parameters:

match

String to match

References advance(), c_str(), setError(), token(), and tokenEquals().

const char* jvar::Parser::c_str

(

)

[inline]

Returns the current token

Returns:

Pointer to current token

References token().

Referenced by advance(), and jvar::JsonParser::JsonParser().

bool jvar::Parser::eof

(

)

[inline]

Is the entire text parsed

Returns:

True if at the end of text has reached

Referenced by jvar::JsonParser::JsonParser(), and jvar::Variant::path().

const std::string& jvar::Parser::errMsg

(

)

[inline]

Returns the error message

Returns:

Reference to the formatted error message string

Referenced by jvar::JsonParser::JsonParser().

bool jvar::Parser::failed

(

)

[inline]

Was there a failure

Returns:

True if there was an error, false otherwise

Referenced by jvar::JsonParser::JsonParser(), and jvar::Variant::parseJson().

void jvar::Parser::setError

(

const char *

msg

)

Sets an error message and signal failure

Parameters:

msg	Error text

Referenced by advance(), jvar::JsonParser::JsonParser(), and Parser().

void jvar::Parser::stripQuotes

(

bool

allowsingle

)

Strip quotes from the current token string if found

Parameters:

allowsingle

If true, also allows stripping single quotes

const std::string& jvar::Parser::token

(

)

[inline]

Returns the current token

Returns:

Reference to current token

Referenced by advance(), c_str(), jvar::JsonParser::JsonParser(), jvar::Variant::path(), and tokenEquals().

bool jvar::Parser::tokenEquals

(

const char *

val

)

[inline]

Compares the current token with a string

Parameters:

val	String to compare

Returns:

True if equal, false otherwise

References token().

Referenced by advance(), jvar::JsonParser::JsonParser(), and jvar::Variant::path().

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

• str.h
• str.cpp