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java.lang.Objectnet.sourceforge.chaperon.build.FirstSetCollection
This class creates a collection of FIRST sets.
Constructor Summary | |
FirstSetCollection(Grammar grammar)
Create a collection of FIRST sets. |
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FirstSetCollection(Grammar grammar,
org.apache.commons.logging.Log log)
Create a collection of FIRST sets |
Method Summary | |
SymbolSet |
getFirstSet(Symbol symbol)
Returns the FIRST set for a symbol. |
SymbolSet |
getFirstSet(SymbolList symbols)
Returns the FIRST set for a sequence of symbols. |
boolean |
isNullable(Symbol symbol)
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java.lang.String |
toString()
Return a string representation of the FIRST sets. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public FirstSetCollection(Grammar grammar)
grammar
- Grammar.public FirstSetCollection(Grammar grammar, org.apache.commons.logging.Log log)
grammar
- Grammarlog
- Log, whch should be used.Method Detail |
public SymbolSet getFirstSet(Symbol symbol)
symbol
- Symbol.
public SymbolSet getFirstSet(SymbolList symbols)
public boolean isNullable(Symbol symbol)
public java.lang.String toString()
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