class Scanner in scala.util.parsing.combinator.lexical.Scanners

scala.util.parsing.combinator.lexical.Scanners

class Scanner

[source: scala/util/parsing/combinator/lexical/Scanners.scala]

class Scanner(in : Reader[Char]): extends Reader[Token]

Scanner is essentially(*) a parser that produces `Token's from a stream of characters. The tokens it produces are typically passed to parsers in TokenParsers.

Note: (*) Scanner is really a `Reader' of `Token's

Additional Constructor Summary
`def`	this (in : java.lang.String) : Scanner Convenience constructor (makes a character reader out of the given string)

Method Summary
`def`	atEnd : Boolean Whether there are any more elements in this reader besides the first. (i.e., whether calling `rest' will yield a `Reader' with more elements)
`def`	first : Token Returns the first element of the stream
`def`	pos : Position The position of the first element in the stream
`def`	rest : Scanner Returns an abstract reader consisting of all elements except the first

Methods inherited from AnyRef
getClass, hashCode, equals, clone, toString, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized

Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf

Additional Constructor Details

def this(in : java.lang.String) : Scanner

Convenience constructor (makes a character reader out of the given string)

Method Details

def first : Token

Returns the first element of the stream

Overrides: Reader.first

def rest : Scanner

Returns an abstract reader consisting of all elements except the first

Returns: If atEnd is true, the result will be this'; otherwise, it's a Reader containing more elements.


    
        
          Overrides
        
        
        Reader.rest
        
      


      
        
        
        def
        pos : Position
      
      
    
      The position of the first element in the stream
      
    
        
          Overrides
        
        
        Reader.pos
        
      


      
        
        
        def
        atEnd : Boolean
      
      
    
      Whether there are any more elements in this reader besides the first. 
   (i.e., whether calling `rest' will yield a `Reader' with more elements)
      
    
        
          Overrides
        
        
        Reader.atEnd




    
        
        
          
            
          
          
            Scala Library Documentation