Package net.emustudio.edigen.generation

Class GenerateFieldsVisitor

java.lang.Object

net.emustudio.edigen.Visitor

net.emustudio.edigen.generation.GenerateFieldsVisitor

public class GenerateFieldsVisitor
extends Visitor

A visitor which generates Java source code of the instruction decoder fields for rules and values. Each rule (which has at least one returning variant) and string-returning variant is given a unique integral constant which can be later used in a disassembler and emulator.

Constructor Summary

Constructors

Constructor	Description
GenerateFieldsVisitor(java.io.Writer writer)	Constucts the visitor.

Method Summary

Modifier and Type	Method	Description
void	visit(Decoder decoder)	Writes the constants.
void	visit(Rule rule)	Adds the field names for the particular rule to the list.
void	visit(Variant variant)	Adds the field to the list and sets the flag if the variant returns something.

Methods inherited from class net.emustudio.edigen.Visitor

visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

GenerateFieldsVisitor

public GenerateFieldsVisitor(java.io.Writer writer)

Constucts the visitor.

Parameters:

writer - the output stream to write the code to

Method Detail

visit

public void visit(Decoder decoder)
           throws SemanticException

Writes the constants.

Overrides:

visit in class Visitor

Parameters:

decoder - the decoder node

Throws:

SemanticException - never

visit

public void visit(Rule rule)
           throws SemanticException

Adds the field names for the particular rule to the list.

Overrides:

visit in class Visitor

Parameters:

rule - the rule node

Throws:

SemanticException - never

visit

public void visit(Variant variant)

Adds the field to the list and sets the flag if the variant returns something.

Overrides:

visit in class Visitor

Parameters:

variant - the variant node