Computer Shopper 139/dpcs0999.iso/Web/CFserver/data1.cab/Java/allaire/util/template/SymbolTable.class

Java Class File | 1999-04-12 | 1.8 KB | 59 lines

package allaire.util.template;

import netscape.util.Enumeration;
import netscape.util.Hashtable;

public class SymbolTable {
   private Hashtable m_symbols = new Hashtable();

   public SymbolTable(Hashtable var1) throws SymbolTableException {
      Enumeration var2 = var1.keys();

      while(var2.hasMoreElements()) {
         String var3 = (String)var2.nextElement();
         this.set(var3.toUpperCase(), var1.get(var3));
      }

   }

   public void set(String var1, Object var2) throws SymbolTableException {
      this.verifySymbol(var1);
      this.m_symbols.put(var1.toUpperCase(), var2);
   }

   public Object get(String var1) {
      return this.m_symbols.get(var1.toUpperCase());
   }

   public final Object getRequired(String var1) throws SymbolTableException {
      Object var2 = this.get(var1);
      if (var2 != null) {
         return var2;
      } else {
         throw new SymbolTableException(202, "Attempted to retrieve the value of a variable (" + var1 + ") which does not currently exist.");
      }
   }

   public final String getString(String var1) {
      Object var2 = this.get(var1);
      return var2 == null ? null : var2.toString();
   }

   public final String getStringRequired(String var1) throws SymbolTableException {
      return this.getRequired(var1).toString();
   }

   protected void verifySymbol(String var1) throws SymbolTableException {
      if (var1.length() == 0) {
         throw new SymbolTableException(201, "Attempted to set a variable value without a valid " + "variable name.");
      }
   }

   public void remove(String var1) {
      this.m_symbols.remove(var1.toUpperCase());
   }

   public SymbolTable() {
   }
}