Package EDU.purdue.jtb.parser

Class Expansion_

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static class  Expansion_.EXP_TYPE
      Subclasses enum type

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected static java.lang.String EOL
      The OS line separator
      boolean inMinimumSize
      This flag is used for bookkeeping by the minimumSize method in class UnusedParseEngine.
      long myGeneration
      To avoid right-recursive loops when calculating follow sets, we use a generation number which indicates if this expansion was visited by UnusedLookaheadWalk#genFollowSet(List, Expansion_, long) in the same generation.
      static long nextGenerationIndex
      To avoid right-recursive loops when calculating follow sets, we use a generation number which indicates if this expansion was visited by UnusedLookaheadWalk#genFollowSet(List, Expansion_, long) in the same generation.
      java.lang.Object parent
      The parent of this expansion node.

    • Constructor Summary

      Constructors 
      Constructor Description
      Expansion_()  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.StringBuilder dump​(int indent, java.util.Set<java.lang.Object> alreadyDumped)  
      protected static java.lang.StringBuilder dumpPrefix​(int indent)  
      java.lang.String toString()

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • parent

        public java.lang.Object parent
        The parent of this expansion node. In case this is the top level expansion of the production it is a reference to the production node otherwise it is a reference to another Expansion node. In case this is the top level of a lookahead expansion,then the parent is null.

      • nextGenerationIndex

        public static long nextGenerationIndex
        To avoid right-recursive loops when calculating follow sets, we use a generation number which indicates if this expansion was visited by UnusedLookaheadWalk#genFollowSet(List, Expansion_, long) in the same generation. New generations are obtained by incrementing the static counter nextGenerationIndex, and the current generation is stored in the non-static variable myGeneration.

      • myGeneration

        public long myGeneration
        To avoid right-recursive loops when calculating follow sets, we use a generation number which indicates if this expansion was visited by UnusedLookaheadWalk#genFollowSet(List, Expansion_, long) in the same generation. New generations are obtained by incrementing the static counter nextGenerationIndex, and the current generation is stored in the non-static variable myGeneration.

      • inMinimumSize

        public boolean inMinimumSize
        This flag is used for bookkeeping by the minimumSize method in class UnusedParseEngine.

      • EOL

        protected static final java.lang.String EOL
        The OS line separator

    • Constructor Detail

      • Expansion_

        public Expansion_()

    • Method Detail

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object

      • dumpPrefix

        protected static java.lang.StringBuilder dumpPrefix​(int indent)
        Parameters:
        indent - - the number of indentation level
        Returns:
        a StringBuilder with twice the number of spaces given by the parameter

      • dump

        public java.lang.StringBuilder dump​(int indent,
                                    java.util.Set<java.lang.Object> alreadyDumped)
        Parameters:
        indent - - the number of spaces for indenting
        alreadyDumped - - a Set of objects already dumped (unused)
        Returns:
        the formatted string dumping the class