hy/hy/core/macros.hy

;;; hy core macros

(defmacro if-python2 [python2-form python3-form]
  (import sys)
  (if (< (get sys.version_info 0) 3)
    python2-form
    python3-form))

(defmacro yield-from [_hy_yield_from_els]
  (quasiquote
    (for [_hy_yield_from_x (unquote _hy_yield_from_els)]
      (yield _hy_yield_from_x))))
Add yield from via macro magic. This will let us use (basic) yield from behavior from Python 2. This isn't complete, and is low-hanging fruit for others willing to hack on hy. I've also changed the macrosystem to allow for proper bootstrapping. This is similar to how it's done elsewhere in the codebase (stdlib stuff). 2013-08-17 17:37:48 +02:00			`;;; hy core macros`

Macro if-python2 for compile-time choice between Python 2 and Python 3 code branches 2013-09-02 09:58:35 +02:00			`(defmacro if-python2 [python2-form python3-form]`
			`(import sys)`
			`(if (< (get sys.version_info 0) 3)`
			`python2-form`
			`python3-form))`

Add yield from via macro magic. This will let us use (basic) yield from behavior from Python 2. This isn't complete, and is low-hanging fruit for others willing to hack on hy. I've also changed the macrosystem to allow for proper bootstrapping. This is similar to how it's done elsewhere in the codebase (stdlib stuff). 2013-08-17 17:37:48 +02:00			`(defmacro yield-from [_hy_yield_from_els]`
			`(quasiquote`
			`(for [_hy_yield_from_x (unquote _hy_yield_from_els)]`
			`(yield _hy_yield_from_x))))`