Package com.tangosol.coherence.dsltools.base

Class BaseTokenStream

java.lang.Object
com.tangosol.coherence.dsltools.base.BaseTokenStream
public class BaseTokenStream extends Object
Since BaseTokens can nest, BaseTokenStream creates for clients a utility interface that allows streaming (atEnd(), next()) over a CompoundBaseToken.
Author:
djl 2009.03.14

  • Constructor Details

    • BaseTokenStream

      public BaseTokenStream(CompoundBaseToken token)
      Constructor a new BaseTokenStream on the CompoundBaseToken.
      Parameters:
      token - the CompoundBaseToken to stream over

  • Method Details

    • isEnd

      public boolean isEnd()
      Answer a boolean indication as to whether the stream is at the end
      Returns:
      true if streaming is at an end otherwise false

    • getCurrentToken

      public BaseToken getCurrentToken()
      Answer a current BaseToken base on the position of streaming
      Returns:
      the BaseToken at the current stream position

    • next

      public BaseToken next()
      Answer the next token in the stream or null if at end. Advance the stream position.
      Returns:
      the next BaseToken in the stream

    • peek

      public BaseToken peek()
      Answer the next token in the stream or null if at end. Do not advance the stream position
      Returns:
      the next BaseToken in the stream

    • peek2

      public BaseToken[] peek2()
      Answer the next two tokens in the stream or null(s) if at end. Do not advance the stream position
      Returns:
      the next BaseToken in the stream

    • setLink

      public void setLink(BaseTokenStream ts)
      Remember a BaseTokenStream that can be the target of streaming
      Parameters:
      ts - the remembered token stream

    • getLink

      public BaseTokenStream getLink()
      Answer a BaseTokenStream that can become the target of streaming
      Returns:
      the BaseTokenStream that can become the target of streaming