org.sc3d.apt.sss.v3
Class Tree.NonTerminal

java.lang.Object
  org.sc3d.apt.sss.v3.Tree
      org.sc3d.apt.sss.v3.Tree.NonTerminal

Enclosing class:

Tree

public static class Tree.NonTerminal
extends Tree

The subclass of Tree with 'isTerminal==false', which represents zero or more parse-trees all matching the same non-terminal of the grammar. In other words, this class represents a string that matches a Grammar.NonTerminal.

Nested Class Summary

Nested classes/interfaces inherited from class org.sc3d.apt.sss.v3.Tree

Tree.NonTerminal, Tree.Production, Tree.Terminal

Field Summary

int	length The number of repeats that the parser found.

Fields inherited from class org.sc3d.apt.sss.v3.Tree

isTerminal

Constructor Summary

Tree.NonTerminal(Tree.Production[] repeats)
Constructs a NonTerminal.

Method Summary

Tree.Production	get() Returns 'get(0)', or 'null' if 'length' is zero.
Tree.Production	get(int index) Returns the parse-tree of the repeat with index 'index'.

Methods inherited from class org.sc3d.apt.sss.v3.Tree

toString

Methods inherited from class java.lang.Object

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

Field Detail

length

public final int length

The number of repeats that the parser found. If the Grammar.NonTerminal was marked as optional, this field may be zero, otherwise it must be non-zero. If the Grammar.NonTerminal was marked as repeatable, this field may be more than one, otherwise it must be at most one.

Constructor Detail

Tree.NonTerminal

public Tree.NonTerminal(Tree.Production[] repeats)

Constructs a NonTerminal.

Method Detail

get

public Tree.Production get(int index)

Returns the parse-tree of the repeat with index 'index'.

get

public Tree.Production get()

Returns 'get(0)', or 'null' if 'length' is zero.

Throws:

java.lang.IllegalArgumentException - if 'length' is greater than one.