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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2022 Pierre Langlois <pierre.langlois@gmx.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix 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 General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (guix build-system tree-sitter)
+ #:use-module (guix store)
+ #:use-module (guix utils)
+ #:use-module (guix packages)
+ #:use-module (guix gexp)
+ #:use-module (guix monads)
+ #:use-module (guix search-paths)
+ #:use-module (guix build-system)
+ #:use-module (guix build-system gnu)
+ #:use-module (guix build-system node)
+ #:use-module (ice-9 match)
+ #:export (%tree-sitter-build-system-modules
+ tree-sitter-build
+ tree-sitter-build-system))
+
+(define %tree-sitter-build-system-modules
+ ;; Build-side modules imported by default.
+ `((guix build tree-sitter-build-system)
+ ,@%node-build-system-modules))
+
+(define* (lower name
+ #:key source inputs native-inputs outputs system target
+ #:allow-other-keys
+ #:rest arguments)
+ "Return a bag for NAME from the given arguments."
+ (define private-keywords
+ `(#:inputs #:native-inputs #:outputs ,@(if target
+ '()
+ '(#:target))))
+ (define node
+ (module-ref (resolve-interface '(gnu packages node))
+ 'node-lts))
+ (define tree-sitter
+ (module-ref (resolve-interface '(gnu packages tree-sitter))
+ 'tree-sitter))
+ (define tree-sitter-cli
+ (module-ref (resolve-interface '(gnu packages tree-sitter))
+ 'tree-sitter-cli))
+ ;; Grammars depend on each other via JS modules, which we package into a
+ ;; dedicated js output.
+ (define grammar-inputs
+ (map (match-lambda
+ ((name package)
+ `(,name ,package "js")))
+ inputs))
+ (bag
+ (name name)
+ (system system) (target target)
+ (build-inputs `(,@(if source
+ `(("source" ,source))
+ '())
+ ("node" ,node)
+ ("tree-sitter-cli" ,tree-sitter-cli)
+ ,@native-inputs
+ ,@(if target '() grammar-inputs)
+ ;; Keep the standard inputs of 'gnu-build-system'.
+ ,@(if target
+ (standard-cross-packages target 'host)
+ '())
+ ,@(standard-packages)))
+ (host-inputs `(("tree-sitter" ,tree-sitter)
+ ,@(if target grammar-inputs '())))
+ ;; Keep the standard inputs of 'gnu-buid-system'.
+ (target-inputs (if target
+ (standard-cross-packages target 'target)
+ '()))
+ ;; XXX: this is a hack to get around issue #41569.
+ (outputs (match outputs
+ (("out") (cons "js" outputs))
+ (_ outputs)))
+ (build (if target tree-sitter-cross-build tree-sitter-build))
+ (arguments (strip-keyword-arguments private-keywords arguments))))
+
+(define* (tree-sitter-build name inputs
+ #:key
+ source
+ (phases '%standard-phases)
+ (grammar-directories '("."))
+ (tests? #t)
+ (outputs '("out" "js"))
+ (search-paths '())
+ (system (%current-system))
+ (guile #f)
+ (imported-modules %tree-sitter-build-system-modules)
+ (modules '((guix build utils)
+ (guix build tree-sitter-build-system))))
+ (define builder
+ (with-imported-modules imported-modules
+ #~(begin
+ (use-modules #$@(sexp->gexp modules))
+ (tree-sitter-build #:name #$name
+ #:source #+source
+ #:system #$system
+ #:phases #$phases
+ #:tests? #$tests?
+ #:grammar-directories '#$grammar-directories
+ #:outputs #$(outputs->gexp outputs)
+ #:search-paths
+ '#$(sexp->gexp
+ (map search-path-specification->sexp
+ search-paths))
+ #:inputs #$(input-tuples->gexp inputs)))))
+
+ (mlet %store-monad ((guile (package->derivation (or guile (default-guile))
+ system #:graft? #f)))
+ (gexp->derivation name builder
+ #:system system
+ #:guile-for-build guile)))
+
+(define* (tree-sitter-cross-build name
+ #:key
+ target
+ build-inputs target-inputs host-inputs
+ guile source
+ (phases '%standard-phases)
+ (grammar-directories '("."))
+ (tests? #t)
+ (outputs '("out" "js"))
+ (search-paths '())
+ (native-search-paths '())
+ (system (%current-system))
+ (build (nix-system->gnu-triplet system))
+ (imported-modules
+ %tree-sitter-build-system-modules)
+ (modules
+ '((guix build utils)
+ (guix build tree-sitter-build-system))))
+ (define builder
+ (with-imported-modules imported-modules
+ #~(begin
+ (use-modules #$@(sexp->gexp modules))
+
+ (define %build-host-inputs
+ #+(input-tuples->gexp build-inputs))
+
+ (define %build-target-inputs
+ (append #$(input-tuples->gexp host-inputs)
+ #+(input-tuples->gexp target-inputs)))
+
+ (define %build-inputs
+ (append %build-host-inputs %build-target-inputs))
+
+ (tree-sitter-build #:name #$name
+ #:source #+source
+ #:system #$system
+ #:build #$build
+ #:target #$target
+ #:phases #$phases
+ #:tests? #$tests?
+ #:grammar-directories '#$grammar-directories
+ #:outputs #$(outputs->gexp outputs)
+ #:inputs %build-target-inputs
+ #:native-inputs %build-host-inputs
+ #:search-paths '
+ #$(sexp->gexp
+ (map search-path-specification->sexp
+ search-paths))
+ #:native-search-paths
+ '#$(sexp->gexp
+ (map
+ search-path-specification->sexp
+ native-search-paths))))))
+
+ (mlet %store-monad ((guile (package->derivation (or guile (default-guile))
+ system #:graft? #f)))
+ (gexp->derivation name builder
+ #:system system
+ #:target target
+ #:guile-for-build guile)))
+
+(define tree-sitter-build-system
+ (build-system
+ (name 'tree-sitter)
+ (description "The Tree-sitter grammar build system")
+ (lower lower)))
+
+;;; tree-sitter.scm ends here