wren/test/language/closure/nested_closure.wren

var f = null

new Fn {
  var a = "a"
  new Fn {
    var b = "b"
    new Fn {
      var c = "c"
      f = new Fn {
        IO.print(a)
        IO.print(b)
        IO.print(c)
      }
    }.call()
  }.call()
}.call()

f.call()
// expect: a
// expect: b
// expect: c
Get closures working! In the process, I had to change the grammar. There is now a strong separation between statements and expressions. The code was just wrong before when it popped locals at the end of a block scope because there could be temporaries on the stack if the block was in expression position. This fixes that. Still need to implement closing over `this`. 2013-12-04 07:43:50 -08:00			`var f = null`

Convert all fns to block arg syntax. 2014-04-02 19:41:53 -07:00			`new Fn {`
Get closures working! In the process, I had to change the grammar. There is now a strong separation between statements and expressions. The code was just wrong before when it popped locals at the end of a block scope because there could be temporaries on the stack if the block was in expression position. This fixes that. Still need to implement closing over `this`. 2013-12-04 07:43:50 -08:00			`var a = "a"`
Convert all fns to block arg syntax. 2014-04-02 19:41:53 -07:00			`new Fn {`
Get closures working! In the process, I had to change the grammar. There is now a strong separation between statements and expressions. The code was just wrong before when it popped locals at the end of a block scope because there could be temporaries on the stack if the block was in expression position. This fixes that. Still need to implement closing over `this`. 2013-12-04 07:43:50 -08:00			`var b = "b"`
Convert all fns to block arg syntax. 2014-04-02 19:41:53 -07:00			`new Fn {`
Get closures working! In the process, I had to change the grammar. There is now a strong separation between statements and expressions. The code was just wrong before when it popped locals at the end of a block scope because there could be temporaries on the stack if the block was in expression position. This fixes that. Still need to implement closing over `this`. 2013-12-04 07:43:50 -08:00			`var c = "c"`
Convert all fns to block arg syntax. 2014-04-02 19:41:53 -07:00			`f = new Fn {`
Clean up text handling a bit: - Rename IO.write -> IO.print. - Make IO.write not print a newline. - Support \u Unicode escapes in strings. 2014-01-05 12:27:12 -08:00			`IO.print(a)`
			`IO.print(b)`
			`IO.print(c)`
Get closures working! In the process, I had to change the grammar. There is now a strong separation between statements and expressions. The code was just wrong before when it popped locals at the end of a block scope because there could be temporaries on the stack if the block was in expression position. This fixes that. Still need to implement closing over `this`. 2013-12-04 07:43:50 -08:00			`}`
Allow empty argument list methods. - Compile them as calls and definitions. - Use them for call(), clear(), run(), try(), and yield(). - Update the docs. 2015-02-26 23:08:36 -08:00			`}.call()`
			`}.call()`
			`}.call()`
Get closures working! In the process, I had to change the grammar. There is now a strong separation between statements and expressions. The code was just wrong before when it popped locals at the end of a block scope because there could be temporaries on the stack if the block was in expression position. This fixes that. Still need to implement closing over `this`. 2013-12-04 07:43:50 -08:00
Allow empty argument list methods. - Compile them as calls and definitions. - Use them for call(), clear(), run(), try(), and yield(). - Update the docs. 2015-02-26 23:08:36 -08:00			`f.call()`
Get closures working! In the process, I had to change the grammar. There is now a strong separation between statements and expressions. The code was just wrong before when it popped locals at the end of a block scope because there could be temporaries on the stack if the block was in expression position. This fixes that. Still need to implement closing over `this`. 2013-12-04 07:43:50 -08:00			`// expect: a`
			`// expect: b`
			`// expect: c`