scanner

Documentation

Index

• type ErrorHandler
• type Scanner
  • func (s *Scanner) Init(src string)
  • func (s *Scanner) Scan() (tok token.Token, lit string)
  • func (s *Scanner) Source() string

Types

type ErrorHandler

type ErrorHandler func(pos token.Position, msg string)

An ErrorHandler may be provided to Scanner.Init. If a syntax error is encountered and a handler was installed, the handler is called with a position and an error message. The position points to the beginning of the offending token.

type Scanner

type Scanner struct {

	// public state - ok to modify
	ErrorCount int // number of errors encountered
	OnErr      func(msg string)
	// contains filtered or unexported fields
}

A Scanner holds the scanner's internal state while processing a given text. It can be allocated as part of another data structure but must be initialized via Init before use.

func (*Scanner) Init

func (s *Scanner) Init(src string)

func (*Scanner) Scan

func (s *Scanner) Scan() (tok token.Token, lit string)

func (*Scanner) Source

func (s *Scanner) Source() string