Package edu.isi.powerloom.gui.parser

A backtracking predictive parser.

See:
Description

Interface Summary

Generator	Interface used for encapsulating code which generates lists of candidate completions for a given object type (e.g., instance, concept, etc).
ParserInterface	Abstract interface for the parser.

Class Summary

CompletionResult	Structure for holding result of symbol completion.
Completor	Singleton class used for performing symbol completions.
Grammar	Data Structure for representing a grammar.
GrammarParser	Static class used for parsing a grammar file and creating a Grammar structure.
NonTerminal	Structure representing a nonterminal symbol.
ParseNode	Structure represnting a node in a parse tree.
Parser	Backtracking parser, which "forks" the stack when there are multiple productions which can be applied to a given stack/input configuration.
ParseResult	Encapsulates result of parse: list of productions if successful, List of exceptions if failure
ParserImpl	Default implementation of ParserInterface.
ParserInterfaceFactory	Factory for creating an instance of ParseInterface
ParseTable	Table indexed by NonTerminal and Input Symbol.
PLElement	Implementation of javax.swing.text.Element which represents a node in a parse tree.
Production	Structure which represents a grammar production.
Scanner	Scanner which is automatically generated from JLex and the Scanner spec in the resources directory.
Symbol	Abstract class for representing a grammar symbol.
SymbolManager	Class used for managing a symbol table.
Terminal	Class representing a terminal symbol.
Yytoken	Class representing a scanned token.

Exception Summary

NoProductionsException	Exception used when no productions exist.
ParseException	General parsing exception.
StackInputMismatchException	Exception used for stack/input mismatches.

Package edu.isi.powerloom.gui.parser Description

A backtracking predictive parser. This utility is used by features such as name completion, query parsing (for collecting free variables), and determining the correct constituent of a proposition when right-clicking in a proposition navigation pane.

Questions and comments should be directed to Eric Melz or Hans Chalupsky

Last modified: Thu Nov 14 19:29:06 Pacific Standard Time 2002