lint: Define some procedures for analysing code in phases.

* guix/lint.scm
  (check-optional-tests): Extract logic for extracting the phases from a
  package to ...
  (find-phase-deltas): ... here, and ...
  (report-bogus-phase-deltas): ... here.
  (check-optional-tests)[check-check-procedure]: Extract code for extracting
  the procedure body to ...
  (find-procedure-body) ... here.
  (find-phase-procedure): New procedure.
  (report-bogus-phase-procedure): New procedure.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
This commit is contained in:
Maxime Devos 2021-07-01 12:51:14 +02:00 committed by Mathieu Othacehe
parent 8333673c4c
commit a8e4c158f9
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@ -161,6 +161,78 @@ (define-syntax make-warning
((_ package (G_ message) rest ...)
(%make-warning package message rest ...))))
;;;
;;; Procedures for analysing Scheme code in package definitions
;;;
(define* (find-procedure-body expression found
#:key (not-found (const '())))
"Try to find the body of the procedure defined inline by EXPRESSION.
If it was found, call FOUND with its body. If it wasn't, call
the thunk NOT-FOUND."
(match expression
(`(,(or 'let 'let*) . ,_)
(find-procedure-body (car (last-pair expression)) found
#:not-found not-found))
(`(,(or 'lambda 'lambda*) ,_ . ,code)
(found code))
(_ (not-found))))
(define* (report-bogus-phase-deltas package bogus-deltas)
"Report a bogus invocation of modify-phases."
(list (make-warning package
;; TRANSLATORS: 'modify-phases' is a Scheme syntax
;; and should not be translated.
(G_ "incorrect call to modify-phases")
#:field 'arguments)))
(define* (find-phase-deltas package found
#:key (not-found (const '()))
(bogus
(cut report-bogus-phase-deltas package <>)))
"Try to find the clauses of the modify-phases form in the phases
specification of PACKAGE. If they were found, all FOUND with a list
of the clauses. If they weren't (e.g. because modify-phases wasn't
used at all), call the thunk NOT-FOUND instead. If modify-phases
was used, but the clauses don't form a list, call BOGUS with the
not-a-list."
(apply (lambda* (#:key phases #:allow-other-keys)
(define phases/sexp
(if (gexp? phases)
(gexp->approximate-sexp phases)
phases))
(match phases/sexp
(`(modify-phases ,_ . ,changes)
((if (list? changes) found bogus) changes))
(_ (not-found))))
(package-arguments package)))
(define (report-bogus-phase-procedure package)
"Report a syntactically-invalid phase clause."
(list (make-warning package
;; TRANSLATORS: See modify-phases in the manual.
(G_ "invalid phase clause")
#:field 'arguments)))
(define* (find-phase-procedure package expression found
#:key (not-found (const '()))
(bogus (cut report-bogus-phase-procedure
package)))
"Try to find the procedure in the phase clause EXPRESSION. If it was
found, call FOUND with the procedure expression. If EXPRESSION isn't
actually a phase clause, call the thunk BOGUS. If the phase form doesn't
have a procedure, call the thunk NOT-FOUND."
(match expression
(('add-after before after proc-expr)
(found proc-expr))
(('add-before after before proc-expr)
(found proc-expr))
(('replace _ proc-expr)
(found proc-expr))
(('delete _) (not-found))
(_ (bogus))))
;;;
;;; Checkers
@ -1111,11 +1183,7 @@ (define (sexp-contains-atom? sexp atom)
(define (sexp-uses-tests?? sexp)
"Test if SEXP contains the symbol 'tests?'."
(sexp-contains-atom? sexp 'tests?))
(define (check-check-procedure expression)
(match expression
(`(,(or 'let 'let*) . ,_)
(check-check-procedure (car (last-pair expression))))
(`(,(or 'lambda 'lambda*) ,_ . ,code)
(define (check-procedure-body code)
(if (sexp-uses-tests?? code)
'()
(list (make-warning package
@ -1124,33 +1192,16 @@ (define (check-check-procedure expression)
;; and should not be translated.
(G_ "the 'check' phase should respect #:tests?")
#:field 'arguments))))
(_ '())))
(define (check-check-procedure expression)
(find-procedure-body expression check-procedure-body))
(define (check-phases-delta delta)
(match delta
(`(replace 'check ,expression)
(check-check-procedure expression))
(_ '())))
(define (check-phases-deltas deltas)
(match deltas
(() '())
((head . tail)
(append (check-phases-delta head)
(check-phases-deltas tail)))
(_ (list (make-warning package
;; TRANSLATORS: modify-phases is a Scheme
;; syntax and must not be translated.
(G_ "incorrect call to modify-phases")
#:field 'arguments)))))
(apply (lambda* (#:key phases #:allow-other-keys)
(define phases/sexp
(if (gexp? phases)
(gexp->approximate-sexp phases)
phases))
(match phases/sexp
(`(modify-phases ,_ . ,changes)
(check-phases-deltas changes))
(_ '())))
(package-arguments package)))
(append-map check-phases-delta deltas))
(find-phase-deltas package check-phases-deltas))
(define* (check-derivation package #:key store)
"Emit a warning if we fail to compile PACKAGE to a derivation."