hex

Documentation

Index

• Constants
• func Parse(input io.Reader) (tokens []ast.HexToken, err error)
• func YYmain(filenames ...string) (interface{}, error)
• type Scanner
  • func NewScanner() *Scanner
  • func (yy *Scanner) Input() (byte, error)
  • func (yy *Scanner) Lex() YYtype
  • func (yy *Scanner) NewFile()
  • func (yy *Scanner) Restart(input_file io.Reader)
  • func (s *Scanner) Token(t int) YYtype
  • func (s *Scanner) TokenByte(t int, value, mask byte, not bool) YYtype
  • func (s *Scanner) TokenInteger(t int, i int) YYtype
• type YYcontext
• type YYtype
  • func Error(c gyperror.Code, msg string) YYtype

Constants

const StringChainingThreshold int = 200

Functions

func Parse

func Parse(input io.Reader) (tokens []ast.HexToken, err error)

Parse parses an hex string in a YARA rule from the provided input source

func YYmain

func YYmain(filenames ...string) (interface{}, error)

Types

type Scanner

type Scanner struct {
	In     io.Reader
	Out    io.Writer
	Lineno int

	Filename      string
	Wrap          func(*Scanner) bool
	IsInteractive func(io.Reader) bool
	Context       YYcontext

	Interactive bool
	// contains filtered or unexported fields
}

func NewScanner

func NewScanner() *Scanner

func (*Scanner) Input

func (yy *Scanner) Input() (byte, error)

func (*Scanner) Lex

func (yy *Scanner) Lex() YYtype

The main scanner function which does all the work.

func (*Scanner) NewFile

func (yy *Scanner) NewFile()

func (*Scanner) Restart

func (yy *Scanner) Restart(input_file io.Reader)

* Immediately switch to a different input stream.

• @param input_file A readable stream. *
• @note This function does not reset the start condition to @c yyInitial .

func (*Scanner) Token

func (s *Scanner) Token(t int) YYtype

func (*Scanner) TokenByte

func (s *Scanner) TokenByte(t int, value, mask byte, not bool) YYtype

func (*Scanner) TokenInteger

func (s *Scanner) TokenInteger(t int, i int) YYtype

type YYcontext

type YYcontext struct{}

type YYtype

type YYtype struct {
	Token int
	Value *hexSymType
	Error gyperror.Error
}

YYtype is the structure returned by the lexer every time the scanner asks for the next token. If the lexer wants to return an error to the scanner it sets the Error field and leaves the Token empty.

func Error

func Error(c gyperror.Code, msg string) YYtype