Kink: developing a programming language on the JVM
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Kink is a prototype-based programming language that runs on the Java Virtual Machine (JVM). It has a simple syntax without classes, semicolons, or commas and supports first-class functions. An example shows defining a bank account prototype with deposit and withdraw methods. Kink also allows calling Java classes and creating a simple Swing application with a button. While Kink has a simple semantics, its performance is very slow compared to other JVM languages like JRuby. Developing a language on the JVM is a good way to learn about the Java platform and programming language implementation.
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![Bank account example
&account = { %[ &INITIAL = 0 ]
&BALANCE = INITIAL
value(
’balance’ : { BALANCE }
’withdraw’ : { &BALANCE << BALANCE - __ }
’deposit’ : { &BALANCE << BALANCE + __ }
)
}
&MY_ACCOUNT = account( 100 )
MY_ACCOUNT.deposit( 32.5 )
MY_ACCOUNT.balance.dump # => 132.5](https://image.slidesharecdn.com/jrubykaigi2010kink-100828053651-phpapp01/85/Kink-developing-a-programming-language-on-the-JVM-4-320.jpg)
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- 1. 2010-08-28 Kink: developing a programming language on the JVM @miyakawa taku
- 2. What is Kink • A programming language on the JVM • Hosted on Google Code – http://code.google.com/p/kink-lang/
- 3. What kind of language • Prototype-based – No classes, only constructor methods – Like Lua and JavaScript • Functional (not purely) – First-class lambda – List processing methods – Like Lisps, especially Scheme
- 4. Bank account example &account = { %[ &INITIAL = 0 ] &BALANCE = INITIAL value( ’balance’ : { BALANCE } ’withdraw’ : { &BALANCE << BALANCE - __ } ’deposit’ : { &BALANCE << BALANCE + __ } ) } &MY_ACCOUNT = account( 100 ) MY_ACCOUNT.deposit( 32.5 ) MY_ACCOUNT.balance.dump # => 132.5
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