Package com.scriptbasic.lexer.elements

Class AbstractElementAnalyzer

java.lang.Object
com.scriptbasic.lexer.elements.AbstractElementAnalyzer
All Implemented Interfaces:
LexicalElementAnalyzer
Direct Known Subclasses:
BasicString, Decimal, Identifier, MultiCharacter, OneCharacter
public abstract class AbstractElementAnalyzer extends Object implements LexicalElementAnalyzer

  • Constructor Details

    • AbstractElementAnalyzer

      protected AbstractElementAnalyzer(SourceReader reader)

  • Method Details

    • getReader

      public SourceReader getReader()

    • read

      public abstract LexicalElement read() throws LexicalException
      Description copied from interface: LexicalElementAnalyzer
      Reads a lexeme and returns the created lexical element.

      If the characters read from the reader show that the lexeme is not the type that the class implementing this interface can handle then the characters are pushed back to he reader and null is returned.

      If the characters read from the reader show that the lexeme is the type that the class implementing this interface can handle, but is erroneous, then the method throws the exception.

      Specified by:
      read in interface LexicalElementAnalyzer
      Returns:
      the created lexeme or null
      Throws:
      LexicalException