objc-mruby

An objc-mruby is mruby wrapper for Objective-C.

lib sources and headers

src/
├── MRuby.m
├── MRubyBlockInfo.m
├── MRubyUtil.m
└── MRubyValue.m
include/
├── MRuby.h
├── MRubyBlockInfo.h
├── MRubyUtil.h
└── MRubyValue.h

Build example app

$ git clone git://github.com/yoshida-eth0/objc-mruby.git
$ cd objc-mruby
$ git submodule init
$ git submodule update
$ cd mruby
$ rake
$ cd ..
$ xcodebuild -project MRubyExample.xcodeproj -configuration Release
$ open build/Release/MRubyExample.app

Example

exec script

/*
 * exec script
 */
- (void)actionExecScript
{
    NSLog(@"%s", __func__);

    MRuby *mruby = [MRuby mruby];
    @try {
        MRubyValue *fizzBuzz = [mruby exec:@"fizzbuzz.rb" withArgs:nil];
    
        NSString *result = [NSString stringWithFormat:@"[ExecScript Success]\n\n%@", [fizzBuzz toObjc]];
        [textView setString:result];
    }
    @catch (NSException *exception) {
        NSString *result = [NSString stringWithFormat:@"[ExecScript Exception]\n\n%@", [exception userInfo]];
        [textView setString:result];
    }
}

eval script

/*
 * eval script
 *
 * mean:
 *   (1..20).map{|i|i%3<1&&x=:Fizz;i%5<1?"#{x}Buzz":x||i}.map(&:to_s.to_proc)
 */
- (void)actionEvalScript
{
    NSLog(@"%s", __func__);

    MRuby *mruby = [MRuby mruby];
    @try {
        MRubyValue *fizzBuzz = [mruby eval:@"(1..20).map{|i|i%3<1&&x=:Fizz;i%5<1?\"#{x}Buzz\":x||i}.map(&:to_s.to_proc)"];

        NSString *result = [NSString stringWithFormat:@"[EvalScript Success]\n\n%@", [fizzBuzz toObjc]];
        [textView setString:result];
    }
    @catch (NSException *exception) {
        NSString *result = [NSString stringWithFormat:@"[EvalScript Exception]\n\n%@", [exception userInfo]];
        [textView setString:result];
    }
}

object instance_eval

/*
 * range object instance_eval
 *
 * mean:
 *   (1..20).instance_eval {
 *     map{|i|i%3<1&&x=:Fizz;i%5<1?"#{x}Buzz":x||i}.map(&:to_s.to_proc)
 *   }
 */
- (void)actionInstanceEval
{
    NSLog(@"%s", __func__);

    MRuby *mruby = [MRuby mruby];
    @try {
        MRubyValue *fizzBuzz = [[mruby eval:@"1..20"] eval:@"map{|i|i%3<1&&x=:Fizz;i%5<1?\"#{x}Buzz\":x||i}.map(&:to_s.to_proc)"];

        NSString *result = [NSString stringWithFormat:@"[InstanceEval Success]\n\n%@", [fizzBuzz toObjc]];
        [textView setString:result];
    }
    @catch (NSException *exception) {
        NSString *result = [NSString stringWithFormat:@"[InstanceEval Exception]\n\n%@", [exception userInfo]];
        [textView setString:result];
    }
}

object call method chaining

/*
 * range object call method chaining
 *
 * mean:
 *   (1..20).map {|i|
 *     i.instance_eval {
 *       i=self;i%3<1&&x=:Fizz;i%5<1?"#{x}Buzz":x||i
 *     }
 *   }.map(&:to_s.to_proc)
 */
- (void)actionCallMethodChaining
{
    NSLog(@"%s", __func__);

    MRuby *mruby = [MRuby mruby];
    @try {
        MRubyValue *fizzBuzz = [[[mruby eval:@"1..20"] send:@"map" blocks:^NSObject *(MRubyValue *i) {
            return [i eval:@"i=self;i%3<1&&x=:Fizz;i%5<1?\"#{x}Buzz\":x||i"];
        }] send:@"map" proc:[mruby eval:@":to_s"]];

        NSString *result = [NSString stringWithFormat:@"[CallMethodChaining Success]\n\n%@", [fizzBuzz toObjc]];
        [textView setString:result];
    }
    @catch (NSException *exception) {
        NSString *result = [NSString stringWithFormat:@"[CallMethodChaining Exception]\n\n%@", [exception userInfo]];
        [textView setString:result];
    }
}

License

MIT

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request