Lexer Class Reference

Public Member Functions
	Lexer (std::istream &input, std::vector< std::string > &lines)
int	nextChar ()
	Aquire next char. More...
int	currentChar () const noexcept
Token	nextToken ()
Token	currentToken () const noexcept
Operator	currentOperator () const noexcept
double	currentNumber () const noexcept
std::int64_t	currentInteger () const noexcept
size_t	currentLine () const noexcept
size_t	getTokenStartPos () const noexcept
size_t	getTokenEndPos () const noexcept
const std::vector< std::string > &	getLines ()
TokenPos	getTokenPos () const noexcept
const std::string &	currentIdentifier () const noexcept
int	currentPrecedence ()
	Returns precedence of current token.
Token	reportError (const std::string &msg) noexcept
	Prints error to console (std::cerr). More...
Token	reportError (const std::string &msg, const TokenPos &pos) noexcept
Token	reportError (const std::string &msg, size_t start, size_t end) noexcept

Public Attributes
bool	skipNewLine = false
	True if lines should be ignored/skipped by nextToken. More...
std::string	skippedNewLinePrefix = ""
	Prefix to print if line was ignored/skipped by nextToken. More...

Member Function Documentation

currentChar()

int Lexer::currentChar ( ) const

noexcept

Returns

Returns char returned by the latest nextChar() call.

See also

nextChar

currentIdentifier()

const std::string& Lexer::currentIdentifier ( ) const

noexcept

Returns

Returns identifier, which was returned by the latest nextToken() == tok_id call.

currentInteger()

std::int64_t Lexer::currentInteger ( ) const

noexcept

Returns

Returns integer number, which was returned by the latest nextToken() = tok_int call.

currentNumber()

double Lexer::currentNumber ( ) const

noexcept

Returns

Returns floating-point number, which was returned by the latest nextToken() == tok_num call.

currentOperator()

Operator Lexer::currentOperator ( ) const

noexcept

Returns

Returns operator, which was returned by the lastest nextToken() == tok_op call.

currentToken()

Token Lexer::currentToken ( ) const

noexcept

Returns

Returns token, which was returned by the latest nextToken() call.

See also

nextToken

nextChar()

int Lexer::nextChar

(

)

Aquire next char.

Returns

Returns next char.

Gets next character in file-stream. Also generates a string for the current line, count current column and line.

nextToken()

Token Lexer::nextToken

(

)

Returns

Returns next token.

See also

Token, nextToken

reportError()

Token Lexer::reportError ( const std::string &  msg )

noexcept

Prints error to console (std::cerr).

Returns

Returns tok_err.

Member Data Documentation

skipNewLine

bool Lexer::skipNewLine = false

True if lines should be ignored/skipped by nextToken.

See also

nextToken

skippedNewLinePrefix

std::string Lexer::skippedNewLinePrefix = ""

Prefix to print if line was ignored/skipped by nextToken.

See also

nextToken, skipNewLine

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

• include/func/lexer.hpp