Package org.rigwit.forth

Forth Virtual Machine

See: Description

Class Summary

Class	Description
Dictionary	The dictionary consists of a collection of word lists, each of which contains a collection of word definitions.
ForthLoader	Load a high-level forth package (file) into the Forth Virtual Machine.
ForthReader	The super class for input handers.
ForthStandardReader	Read the standard input as a stream of characters (as if it where a file).
ForthStreamReader	Read the input from an input stream, buffering one line at a time.
ForthStringReader	Reads input directly from the Forth data space.
ForthTerminalReader	Read input from the Terminal.
ForthWriter	A wrapper around a standard output stream that records if there has been any output on the current line or not.
Kernel	The inner interpreter.
Memory	The memory of the Forth Virtual Machine.
TypedStack	A Typed Stack.
VM	The Forth Virtual Machine.
WordList	A word list is a simple list of XTs in historical order.
XT	eXecution Token.

Exception Summary

Exception	Description
ForthException

Package org.rigwit.forth Description

Forth Virtual Machine

This package represents the Kernel of the JavaForth system. It is not intended for public use. However, if you wish to extend the system by providing CODE words to allow the Forth system to interact with the Java Class library you will need to understand the virtual machine. In particular the VM class.

Input/Output

All I/O is managed as a character stream via the ForthWriter and ForthReader classes.

Files

The ForthLoader should be used to read and interpret Forth source files into the system.

Extensions

Extending the VM is achieved via additional word sets. A word set is loaded into a word list via the WordList.loadJava() method. This will load a Java primitive class according to the rules given in the WordSet class.