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Use `macroexp-parse-body'

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* lisp/emacs-lisp/generator.el: (iter-defun): Use `macroexp-parse-body'.

* test/automated/generator-tests.el (cps-testcase): Use
(cps-test-declarations-preserved): New test.
This commit is contained in:
Daniel Colascione 2015-03-03 13:18:00 -08:00
parent 7133f262bb
commit 8b38d30e1b
4 changed files with 30 additions and 7 deletions
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12
lisp/emacs-lisp/generator.el
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@ -687,14 +687,12 @@ encapsulates the state of a computation that produces a sequence
of values. Callers can retrieve each value using `iter-next'."
(declare (indent defun))
(cl-assert lexical-binding)
(let (preamble)
(when (stringp (car body))
(push (pop body) preamble))
(when (eq (car-safe (car body)) 'declare)
(push (pop body) preamble))
(let* ((parsed-body (macroexp-parse-body body))
(declarations (car parsed-body))
(exps (cdr parsed-body)))
`(defun ,name ,arglist
,@(nreverse preamble)
,(cps-generate-evaluator body))))
,@declarations
,(cps-generate-evaluator exps))))
(defmacro iter-lambda (arglist &rest body)
"Return a lambda generator.