Class SymbolChecker

java.lang.Object

org.ek9lang.compiler.support.SymbolChecker

public class SymbolChecker
extends Object

General utility class that searches in a scope for a symbol to check for duplicates. Note that is a bit ore than a boolean check. It will formulate error messages and add then to the error listener it has been provided with.

Constructor Summary

Constructors

Constructor	Description
SymbolChecker(ErrorListener errorListener)

Method Summary

Modifier and Type	Method	Description
boolean	errorsIfNameDiffersOnlyByCase(List<ISymbol> alreadyDefined, ISymbol symbol)	Check whether the symbol being defined differs ONLY by case from one already defined in the same module.
boolean	errorsIfSymbolAlreadyDefined(IScope inScope, ISymbol symbol, boolean limitVarSearchToBlockScope)	Check for exising symbol in the scope.

Methods inherited from class Object

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

Constructor Details

SymbolChecker

public SymbolChecker(ErrorListener errorListener)

Method Details

errorsIfNameDiffersOnlyByCase

public boolean errorsIfNameDiffersOnlyByCase(List<ISymbol> alreadyDefined,
 ISymbol symbol)

Check whether the symbol being defined differs ONLY by case from one already defined in the same module. Exact duplicates are reported by errorsIfSymbolAlreadyDefined(IScope, ISymbol, boolean); this is the 'too similar' companion check. If this returns true then errors will have been added to the error listener.

errorsIfSymbolAlreadyDefined

public boolean errorsIfSymbolAlreadyDefined(IScope inScope,
 ISymbol symbol,
 boolean limitVarSearchToBlockScope)

Check for exising symbol in the scope. if returns true then errors will have been added to the error listener.