ppg.spec
Class CUPSpec

java.lang.Object
  ppg.spec.Spec
      ppg.spec.CUPSpec

All Implemented Interfaces:

Unparse

public class CUPSpec
extends Spec

Field Summary

Fields inherited from class ppg.spec.Spec

actionCode, child, imports, initCode, packageName, parserCode, prec, scanCode, symbols

Constructor Summary

CUPSpec(java.lang.String pkg, java.util.Vector imp, java.util.Vector codeParts, java.util.Vector syms, java.util.Vector precedence, java.lang.String startSym, java.util.Vector prods)

Method Summary

void	addProductions(Production p)
void	addSymbols(java.util.Vector syms)
java.lang.Object	clone()
CUPSpec	coalesce() Combine the chain of inheritance into one CUP spec
void	dropAllProductions(java.lang.String nt)
void	dropProductions(Nonterminal nt)
void	dropProductions(Production p)
void	dropSymbol(java.lang.String gs)
void	export(java.io.PrintStream out) Write out the CUP specification to the stream
Production	findProduction(Production p) Provides a copy of the production that was present in the original grammar, but is equal (minus semantic actions) to the given production set.
void	removeEmptyProductions()
void	setStart(java.lang.String startSym)
void	unparse(CodeWriter cw) Write a human-readable representation of the parse tree

Methods inherited from class ppg.spec.Spec

addImports, parseChain, replaceCode, setChild, setPkgName

Methods inherited from class java.lang.Object

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

Constructor Detail

CUPSpec

public CUPSpec(java.lang.String pkg,
               java.util.Vector imp,
               java.util.Vector codeParts,
               java.util.Vector syms,
               java.util.Vector precedence,
               java.lang.String startSym,
               java.util.Vector prods)

Method Detail

setStart

public void setStart(java.lang.String startSym)

coalesce

public CUPSpec coalesce()

Description copied from class: Spec

Combine the chain of inheritance into one CUP spec

Specified by:

coalesce in class Spec

findProduction

public Production findProduction(Production p)

Provides a copy of the production that was present in the original grammar, but is equal (minus semantic actions) to the given production set. Thus, we transfer the semantic actions without having to re-specify them.

removeEmptyProductions

public void removeEmptyProductions()

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

addSymbols

public void addSymbols(java.util.Vector syms)

dropSymbol

public void dropSymbol(java.lang.String gs)
                throws PPGError

Throws:

PPGError

dropProductions

public void dropProductions(Production p)

dropProductions

public void dropProductions(Nonterminal nt)

dropAllProductions

public void dropAllProductions(java.lang.String nt)

addProductions

public void addProductions(Production p)

unparse

public void unparse(CodeWriter cw)

Description copied from interface: Unparse

Write a human-readable representation of the parse tree

export

public void export(java.io.PrintStream out)
            throws java.lang.Exception

Write out the CUP specification to the stream

Throws:

java.lang.Exception