public override void checkIsPercent(CheckingContext context)
{
operand.checkIsPercent(context);
}
public override void checkIsPercent(CheckingContext context)
{
}
public override void checkIsBoolean(CheckingContext context)
{
throw operator_.parseThing.createError("cannot evaluate '" + operator_.text + operand.ToString() + "' as a conditional expression");
}
public override void checkIsBoolean(CheckingContext context)
{
CheckingContext.throwNotABooleanError(value);
}
public override void checkIsInt(CheckingContext context)
{
CheckingContext.throwNotAnIntError(value);
}
public override void checkIsInt(CheckingContext context)
{
context.checkIsInt(token);
}
public override void checkIsPercent(CheckingContext context)
{
CheckingContext.throwNotAPercentError(token);
}
public override void checkIsPercent(CheckingContext context)
{
condition.checkIsBoolean(context);
thenPart.checkIsPercent(context);
operand.checkIsPercent(context);
}
public override void checkIsBoolean(CheckingContext context)
{
context.checkIsBoolean(token);
}
public override void checkIsBoolean(CheckingContext context)
{
}
public override void checkIsPercent(CheckingContext context)
{
// this is really tricky
if (operator_.text != "*")
throw operator_.parseThing.createError("operator '" + operator_.text + "' does not produce a percent");
if (left.usedNames().Contains("level"))
{
left.checkIsInt(context);
right.checkIsPercent(context);
}
else if (right.usedNames().Contains("level"))
{
left.checkIsPercent(context);
right.checkIsInt(context);
}
else
{
throw operator_.parseThing.createError("multiplication can only produce a percent by multiplying a percent by something with 'level' in it");
}
}
public override void checkIsInt(CheckingContext context)
{
switch (operator_.text)
{
case "*":
case "+":
case "-":
left.checkIsInt(context);
right.checkIsInt(context);
return;
case "/":
left.checkIsInt(context);
if (!(right is IntLiteral))
throw operator_.parseThing.createError("denominator must be a literal integer, not '" + left.ToString() + "'");
if (((IntLiteral)right).value.value == 0)
throw operator_.parseThing.createError("divide by 0");
return;
}
throw operator_.parseThing.createError("operator '" + operator_.text + "' does not produce an integer");
}
public override void checkIsBoolean(CheckingContext context)
{
switch (operator_.text)
{
case "<=":
case "<":
case ">=":
case ">":
left.checkIsInt(context);
right.checkIsInt(context);
return;
case "AND":
case "OR":
left.checkIsBoolean(context);
right.checkIsBoolean(context);
return;
}
throw operator_.parseThing.createError("operator '" + operator_.text + "' does not produce a conditional expresion");
}
public virtual void checkIsPercent(CheckingContext context)
{
throw new NotImplementedException();
}
