List of tonumber() Examples

Examples of tonumber()

freemarker.core.ast.ArithmeticEngine.toNumber()

org.luaj.vm2.LuaValue.tonumber()

Conditionally convert to lua number without throwing errors.

In lua all numbers are strings, but not all strings are numbers. This function will return the {@link LuaValue} {@code this} if it is a number or a string convertible to a number, and {@link NIL} for all other cases.

This allows values to be tested for their "numeric-ness" without the penalty of throwing exceptions, nor the cost of converting the type and creating storage for it. @return {@code this} if it is a {@link LuaNumber}or {@link LuaString} that can be converted to a number, otherwise {@link #NIL} @see #tostring() @see #optnumber(LuaNumber) @see #checknumber() @see #toint() @see #todouble()

        catch(ClassCastException ex) {
            throw TemplateNode.invalidTypeException(model, caller.getTarget(), env, "string or number");
        }
        ArithmeticEngine e = env == null ? caller.getTemplate().getArithmeticEngine() : env.getArithmeticEngine();
        try {
            return new SimpleNumber(e.toNumber(string));
        } catch(NumberFormatException nfe) {
                String mess = "Error: " + caller.getStartLocation()
                + "\nExpecting a number in string here, found: " + string;
                throw new NonNumericalException(mess, env);
            }

      }
      case 18: { // "tonumber", // (e [,base]) -> value
        LuaValue arg1 = args.checkvalue(1);
        final int base = args.optint(2,10);
        if (base == 10) {  /* standard conversion */
          return arg1.tonumber();
        } else {
          if ( base < 2 || base > 36 )
            argerror(2, "base out of range");
          return arg1.checkstring().tonumber(base);
        }

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Examples of tonumber()

Examples of freemarker.core.ast.ArithmeticEngine.toNumber()

Examples of org.luaj.vm2.LuaValue.tonumber()