MapCSSSpecifier.m

- (id)initWithSyntaxTree:(CPSyntaxTree *)syntaxTree
{
    self = [super init];
    
    if ([self class] == [MapCSSSpecifier class])
    {
        id item = [[syntaxTree children] objectAtIndex:0];
        
        if ([item isKindOfClass:[MapCSSNamed class]])
        {
            return [[MapCSSNamedSpecifier alloc] initWithSyntaxTree:syntaxTree];
        }
        else if ([item isKindOfClass:[MapCSSSize class]])
        {
            return [[MapCSSSizeListSpecifier alloc] initWithSyntaxTree:syntaxTree];
        }
        else if ([item isKindOfClass:[UIColor class]])
        {
            return [[MapCSSColourSpecifier alloc] initWithSyntaxTree:syntaxTree];
        }
        else if ([item isKindOfClass:[MapCSSUURL class]])
        {
            return [[MapCSSURLSpecifier alloc] initWithSyntaxTree:syntaxTree];
        }
        else
        {
            return [[MapCSSEvalSpecifier alloc] initWithSyntaxTree:syntaxTree];
        }
    }
    
    return self;
}