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 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.

    • errorsIfNameIsBuiltIn

      public boolean errorsIfNameIsBuiltIn(IScope moduleScope, ISymbol symbol)
      Check the symbol about to be defined in a user module does not take the name of a built-in construct (E01090). If this returns true then an error 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.