;-*- Mode:     Lisp -*-
;;;; Author:   Paul Dietz
;;;; Created:  Thu Nov 21 09:48:38 2002
;;;; Contains: Miscellaneous loop tests

(in-package :cl-test)

;;; Initially and finally take multiple forms,
;;; and execute them in the right order
(deftest loop.17.1
  (loop
   with x = 0
   initially (incf x 1) (incf x (+ x x))
   initially (incf x (+ x x x))
   until t
   finally (incf x 100) (incf x (+ x x))
   finally (return x))
  336)

(deftest loop.17.2
  (loop
   with x = 0
   until t
   initially (incf x 1) (incf x (+ x x))
   finally (incf x 100) (incf x (+ x x))
   initially (incf x (+ x x x))
   finally (return x))
  336)

(deftest loop.17.3
  (let ((x 0))
    (loop
     with y = (incf x 1)
     initially (incf x 2)
     until t
     finally (return (values x y))))
  3 1)

(deftest loop.17.4
  (loop
   doing (return 'a)
   finally (return 'b))
  a)

(deftest loop.17.5
  (loop
   return 'a
   finally (return 'b))
  a)

(deftest loop.17.6
  (let ((x 0))
    (tagbody
     (loop
      do (go done)
      finally (incf x))
     done)
    x)
  0)

(deftest loop.17.7
  (let ((x 0))
    (catch 'done
      (loop
       do (throw 'done nil)
       finally (incf x)))
    x)
  0)

(deftest loop.17.8
  (loop
   for x in '(1 2 3)
   collect x
   finally (return 'good))
  good)

(deftest loop.17.9
  (loop
   for x in '(1 2 3)
   append (list x)
   finally (return 'good))
  good)

(deftest loop.17.10
  (loop
   for x in '(1 2 3)
   nconc (list x)
   finally (return 'good))
  good)

(deftest loop.17.11
  (loop
   for x in '(1 2 3)
   count (> x 1)
   finally (return 'good))
  good)

(deftest loop.17.12
  (loop
   for x in '(1 2 3)
   sum x
   finally (return 'good))
  good)

(deftest loop.17.13
  (loop
   for x in '(1 2 3)
   maximize x
   finally (return 'good))
  good)

(deftest loop.17.14
  (loop
   for x in '(1 2 3)
   minimize x
   finally (return 'good))
  good)

;;; iteration clause grouping

(deftest loop.17.20
  (loop
   for i from 1 to 5
   for j = 0 then (+ j i)
   collect j)
  (0 2 5 9 14))

(deftest loop.17.21
  (loop
   for i from 1 to 5
   and j = 0 then (+ j i)
   collect j)
  (0 1 3 6 10))

;;; Test that explicit calls to macroexpand in subforms
;;; are done in the correct environment

(deftest loop.17.22
  (macrolet
   ((%m (z) z))
   (loop with x = 0
	 initially (expand-in-current-env (%m (incf x)))
	 until t
	 finally (expand-in-current-env (%m (return x)))))
  1)