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+;;;; srfi-105.test --- Test suite for Guile's SRFI-105 reader. -*- scheme -*-
+;;;;
+;;;; Copyright (C) 2012, 2013 Free Software Foundation, Inc.
+;;;;
+;;;; This library is free software; you can redistribute it and/or
+;;;; modify it under the terms of the GNU Lesser General Public
+;;;; License as published by the Free Software Foundation; either
+;;;; version 3 of the License, or (at your option) any later version.
+;;;;
+;;;; This library is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;;; Lesser General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU Lesser General Public
+;;;; License along with this library; if not, write to the Free Software
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+(define-module (test-srfi-105)
+ #:use-module (test-suite lib)
+ #:use-module (srfi srfi-1))
+
+(define (read-string s)
+ (with-input-from-string s read))
+
+(define (with-read-options opts thunk)
+ (let ((saved-options (read-options)))
+ (dynamic-wind
+ (lambda ()
+ (read-options opts))
+ thunk
+ (lambda ()
+ (read-options saved-options)))))
+
+;; Verify that curly braces are allowed in identifiers and that neoteric
+;; expressions are not recognized by default.
+(with-test-prefix "no-curly-infix"
+ (pass-if (equal? '({f(x) + g[y] + h{z} + [a]})
+ `(,(string->symbol "{f")
+ (x) + g [y] +
+ ,(string->symbol "h{z}")
+ + [a]
+ ,(string->symbol "}")))))
+
+#!curly-infix
+
+(with-test-prefix "curly-infix"
+ (pass-if (equal? '{n <= 5} '(<= n 5)))
+ (pass-if (equal? '{x + 1} '(+ x 1)))
+ (pass-if (equal? '{a + b + c} '(+ a b c)))
+ (pass-if (equal? '{x ,op y ,op z} '(,op x y z)))
+ (pass-if (equal? '{x eqv? `a} '(eqv? x `a)))
+ (pass-if (equal? '{'a eq? b} '(eq? 'a b)))
+ (pass-if (equal? '{n-1 + n-2} '(+ n-1 n-2)))
+ (pass-if (equal? '{a * {b + c}} '(* a (+ b c))))
+ (pass-if (equal? '{a + {b - c}} '(+ a (- b c))))
+ (pass-if (equal? '{{a + b} - c} '(- (+ a b) c)))
+ (pass-if (equal? '{{a > 0} and {b >= 1}} '(and (> a 0) (>= b 1))))
+ (pass-if (equal? '{} '()))
+ (pass-if (equal? '{5} '5))
+ (pass-if (equal? '{- x} '(- x)))
+ (pass-if (equal? '{length(x) >= 6} '(>= (length x) 6)))
+ (pass-if (equal? '{f(x) + g(y) + h(z)} '(+ (f x) (g y) (h z))))
+ (pass-if (equal? '{(f a b) + (g h)} '(+ (f a b) (g h))))
+ (pass-if (equal? '{f(a b) + g(h)} '(+ (f a b) (g h))))
+ (pass-if (equal? ''{a + f(b) + x} ''(+ a (f b) x)))
+ (pass-if (equal? '{(- a) / b} '(/ (- a) b)))
+ (pass-if (equal? '{-(a) / b} '(/ (- a) b)))
+ (pass-if (equal? '{cos(q)} '(cos q)))
+ (pass-if (equal? '{e{}} '(e)))
+ (pass-if (equal? '{pi{}} '(pi)))
+ (pass-if (equal? '{'f(x)} '(quote (f x))))
+
+ (pass-if (equal? '{ (f (g h(x))) } '(f (g (h x)))))
+ (pass-if (equal? '{#(1 2 f(a) 4)} '#(1 2 (f a) 4)))
+ (pass-if (equal? '{ (f #;g(x) h(x)) } '(f (h x))))
+ (pass-if (equal? '{ (f #; g(x)[y] h(x)) } '(f (h x))))
+ (pass-if (equal? '{ (f #; g[x]{y} h(x)) } '(f (h x))))
+
+ (pass-if (equal? '{ (f #(g h(x))) } '(f #(g (h x)))))
+ (pass-if (equal? '{ (f '(g h(x))) } '(f '(g (h x)))))
+ (pass-if (equal? '{ (f `(g h(x))) } '(f `(g (h x)))))
+ (pass-if (equal? '{ (f #'(g h(x))) } '(f #'(g (h x)))))
+ (pass-if (equal? '{ (f #2((g) (h(x)))) } '(f #2((g) ((h x))))))
+
+ (pass-if (equal? '{(map - ns)} '(map - ns)))
+ (pass-if (equal? '{map(- ns)} '(map - ns)))
+ (pass-if (equal? '{n * factorial{n - 1}} '(* n (factorial (- n 1)))))
+ (pass-if (equal? '{2 * sin{- x}} '(* 2 (sin (- x)))))
+
+ (pass-if (equal? '{3 + 4 +} '($nfx$ 3 + 4 +)))
+ (pass-if (equal? '{3 + 4 + 5 +} '($nfx$ 3 + 4 + 5 +)))
+ (pass-if (equal? '{a . z} '($nfx$ a . z)))
+ (pass-if (equal? '{a + b - c} '($nfx$ a + b - c)))
+
+ (pass-if (equal? '{read(. options)} '(read . options)))
+
+ (pass-if (equal? '{a(x)(y)} '((a x) y)))
+ (pass-if (equal? '{x[a]} '($bracket-apply$ x a)))
+ (pass-if (equal? '{y[a b]} '($bracket-apply$ y a b)))
+
+ (pass-if (equal? '{f(g(x))} '(f (g x))))
+ (pass-if (equal? '{f(g(x) h(x))} '(f (g x) (h x))))
+
+
+ (pass-if (equal? '{} '()))
+ (pass-if (equal? '{e} 'e))
+ (pass-if (equal? '{e1 e2} '(e1 e2)))
+
+ (pass-if (equal? '{a . t} '($nfx$ a . t)))
+ (pass-if (equal? '{a b . t} '($nfx$ a b . t)))
+ (pass-if (equal? '{a b c . t} '($nfx$ a b c . t)))
+ (pass-if (equal? '{a b c d . t} '($nfx$ a b c d . t)))
+ (pass-if (equal? '{a + b +} '($nfx$ a + b +)))
+ (pass-if (equal? '{a + b + c +} '($nfx$ a + b + c +)))
+ (pass-if (equal? '{q + r * s} '($nfx$ q + r * s)))
+
+ ;; The following two tests will become relevant when Guile's reader
+ ;; supports datum labels, specified in SRFI-38 (External
+ ;; Representation for Data With Shared Structure).
+
+ ;;(pass-if (equal? '{#1=f(#1#)} '#1=(f #1#)))
+ ;;(pass-if (equal? '#1={a + . #1#} '($nfx$ . #1=(a + . #1#))))
+
+ (pass-if (equal? '{e()} '(e)))
+ (pass-if (equal? '{e{}} '(e)))
+ (pass-if (equal? '{e(1)} '(e 1)))
+ (pass-if (equal? '{e{1}} '(e 1)))
+ (pass-if (equal? '{e(1 2)} '(e 1 2)))
+ (pass-if (equal? '{e{1 2}} '(e (1 2))))
+ (pass-if (equal? '{f{n - 1}} '(f (- n 1))))
+ (pass-if (equal? '{f{n - 1}(x)} '((f (- n 1)) x)))
+ (pass-if (equal? '{f{n - 1}{y - 1}} '((f (- n 1)) (- y 1))))
+ (pass-if (equal? '{f{- x}[y]} '($bracket-apply$ (f (- x)) y)))
+ (pass-if (equal? '{g{- x}} '(g (- x))))
+ (pass-if (equal? '{( . e)} 'e))
+
+ (pass-if (equal? '{e[]} '($bracket-apply$ e)))
+ (pass-if (equal? '{e[1 2]} '($bracket-apply$ e 1 2)))
+ (pass-if (equal? '{e[1 . 2]} '($bracket-apply$ e 1 . 2)))
+
+ ;; Verify that source position information is not recorded if not
+ ;; asked for.
+ (with-test-prefix "no positions"
+ (pass-if "simple curly-infix list"
+ (let ((sexp (with-read-options '(curly-infix)
+ (lambda ()
+ (read-string " {1 + 2 + 3}")))))
+ (and (not (source-property sexp 'line))
+ (not (source-property sexp 'column)))))
+ (pass-if "mixed curly-infix list"
+ (let ((sexp (with-read-options '(curly-infix)
+ (lambda ()
+ (read-string " {1 + 2 * 3}")))))
+ (and (not (source-property sexp 'line))
+ (not (source-property sexp 'column)))))
+ (pass-if "singleton curly-infix list"
+ (let ((sexp (with-read-options '(curly-infix)
+ (lambda ()
+ (read-string " { 1.0 }")))))
+ (and (not (source-property sexp 'line))
+ (not (source-property sexp 'column)))))
+ (pass-if "neoteric expression"
+ (let ((sexp (with-read-options '(curly-infix)
+ (lambda ()
+ (read-string " { f(x) }")))))
+ (and (not (source-property sexp 'line))
+ (not (source-property sexp 'column))))))
+
+ ;; Verify that source position information is properly recorded.
+ (with-test-prefix "positions"
+ (pass-if "simple curly-infix list"
+ (let ((sexp (with-read-options '(curly-infix positions)
+ (lambda ()
+ (read-string " {1 + 2 + 3}")))))
+ (and (equal? (source-property sexp 'line) 0)
+ (equal? (source-property sexp 'column) 1))))
+ (pass-if "mixed curly-infix list"
+ (let ((sexp (with-read-options '(curly-infix positions)
+ (lambda ()
+ (read-string " {1 + 2 * 3}")))))
+ (and (equal? (source-property sexp 'line) 0)
+ (equal? (source-property sexp 'column) 1))))
+ (pass-if "singleton curly-infix list"
+ (let ((sexp (with-read-options '(curly-infix positions)
+ (lambda ()
+ (read-string " { 1.0 }")))))
+ (and (equal? (source-property sexp 'line) 0)
+ (equal? (source-property sexp 'column) 3))))
+ (pass-if "neoteric expression"
+ (let ((sexp (with-read-options '(curly-infix positions)
+ (lambda ()
+ (read-string " { f(x) }")))))
+ (and (equal? (source-property sexp 'line) 0)
+ (equal? (source-property sexp 'column) 3)))))
+
+ ;; Verify that neoteric expressions are recognized only within curly braces.
+ (pass-if (equal? '(a(x)(y)) '(a (x) (y))))
+ (pass-if (equal? '(x[a]) '(x [a])))
+ (pass-if (equal? '(y[a b]) '(y [a b])))
+ (pass-if (equal? '(a f{n - 1}) '(a f (- n 1))))
+ (pass-if (equal? '(a f{n - 1}(x)) '(a f (- n 1) (x))))
+ (pass-if (equal? '(a f{n - 1}[x]) '(a f (- n 1) [x])))
+ (pass-if (equal? '(a f{n - 1}{y - 1}) '(a f (- n 1) (- y 1))))
+
+ ;; Verify that bracket lists are not recognized by default.
+ (pass-if (equal? '{[]} '()))
+ (pass-if (equal? '{[a]} '(a)))
+ (pass-if (equal? '{[a b]} '(a b)))
+ (pass-if (equal? '{[a . b]} '(a . b)))
+ (pass-if (equal? '[] '()))
+ (pass-if (equal? '[a] '(a)))
+ (pass-if (equal? '[a b] '(a b)))
+ (pass-if (equal? '[a . b] '(a . b))))
+
+
+#!curly-infix-and-bracket-lists
+
+(with-test-prefix "curly-infix-and-bracket-lists"
+ ;; Verify that these neoteric expressions still work properly
+ ;; when the 'square-brackets' read option is unset (which is done by
+ ;; the '#!curly-infix-and-bracket-lists' reader directive above).
+ (pass-if (equal? '{e[]} '($bracket-apply$ e)))
+ (pass-if (equal? '{e[1 2]} '($bracket-apply$ e 1 2)))
+ (pass-if (equal? '{e[1 . 2]} '($bracket-apply$ e 1 . 2)))
+
+ ;; The following expressions are not actually part of SRFI-105, but
+ ;; they are handled when the 'curly-infix' read option is set and the
+ ;; 'square-brackets' read option is unset. This is a non-standard
+ ;; extension of SRFI-105, and follows the convention of GNU Kawa.
+ (pass-if (equal? '{[]} '($bracket-list$)))
+ (pass-if (equal? '{[a]} '($bracket-list$ a)))
+ (pass-if (equal? '{[a b]} '($bracket-list$ a b)))
+ (pass-if (equal? '{[a . b]} '($bracket-list$ a . b)))
+
+ (pass-if (equal? '[] '($bracket-list$)))
+ (pass-if (equal? '[a] '($bracket-list$ a)))
+ (pass-if (equal? '[a b] '($bracket-list$ a b)))
+ (pass-if (equal? '[a . b] '($bracket-list$ a . b))))