MyParser

// MyParser.H

#import <Foundation/Foundation.h>
@class PKParser;

@interface MyParser : NSObject {
    __strong NSString *scssGrammar;
    __strong PKParser *scssParser;
}


+ (MyParser *)sharedParser;

- (void)parseTestStringToSCSS;

@end

// MyParser.m

#import "MyParser.h"
#import <ParseKit/ParseKit.h>

@implementation MyParser

- (id)init
{
    self = [super init];
    if (self) {
        // Add your subclass-specific initialization here.

        // Load my grammer from an external file
        NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"scss" withExtension:@"grammar"];
        NSError *err = nil;

        scssGrammar = [NSString stringWithContentsOfFile:fileURL.path encoding:NSUTF8StringEncoding error:&err];

        if (err) {
            NSLog(@"%@", err);
            [[NSAlert alertWithError:err] runModal];
            return;
        }


        scssParser = [[PKParserFactory factory] parserFromGrammar:scssGrammar assembler:self error:nil];
    }
    return self;
}

+ (MyParser *)sharedParser
{
    static MyParser *sharedParser;

    @synchronized(self)
    {
        if (!sharedParser)
            sharedParser = [self new];
        return sharedParser;
    }
}



- (void)parseTestStringToSCSS
{

    NSString *scss = @".myClass { > content {} } "
                      ".myClass2 { color: #444444; }";

    NSError *err = nil;
    [scssParser parse:scss error:&err];
    if (err) {
        NSLog(@"%@", err);
        [[NSAlert alertWithError:err] runModal];
        return;
    }


}



- (void)parser:(PKParser *)p didMatchRuleset:(PKAssembly *)a
{
    NSLog(@"ruleset: %@", a.stack);
}

- (void)parser:(PKParser *)p didMatchSelector:(PKAssembly *)a
{
    NSLog(@"selector: %@", a.stack);
}

- (void)parser:(PKParser *)p didMatchProperty:(PKAssembly *)a
{
//    NSLog(@"properties: %@", a.stack);
}



@end