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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 tree-sitter-build-system)
#:use-module ((guix build node-build-system) #:prefix node:)
#:use-module (guix build json)
#:use-module (guix build utils)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:use-module (srfi srfi-1)
#:export (%standard-phases
tree-sitter-build))
;; Commentary:
;;
;; Build procedures for tree-sitter grammar packages. This is the
;; builder-side code, which builds on top of the node build-system.
;;
;; Tree-sitter grammars are written in JavaScript and compiled to a native
;; shared object. The `tree-sitter generate' command invokes `node' in order
;; to evaluate the grammar.js into a grammar.json file, which is then
;; translated into C code. We then compile the C code ourselves. Packages
;; also sometimes add extra manually written C/C++ code.
;;
;; In order to support grammars depending on each other, such as C and C++,
;; JavaScript and TypeScript, this build-system installs the source of the
;; node module in a dedicated "js" output.
;;
;; Code:
(define* (patch-dependencies #:key inputs #:allow-other-keys)
"Rewrite dependencies in 'package.json'. We remove all runtime dependencies
and replace development dependencies with tree-sitter grammar node modules."
(define (rewrite package.json)
(map (match-lambda
(("dependencies" @ . _)
'("dependencies" @))
(("devDependencies" @ . _)
`("devDependencies" @
,@(filter-map (match-lambda
((key . directory)
(let ((node-module
(string-append directory
"/lib/node_modules/"
key)))
(and (directory-exists? node-module)
`(,key . ,node-module)))))
(alist-delete "node" inputs))))
(other other))
package.json))
(node:with-atomic-json-file-replacement "package.json"
(match-lambda
(('@ . package.json)
(cons '@ (rewrite package.json))))))
;; FIXME: The node build-system's configure phase does not support
;; cross-compiling so we re-define it.
(define* (configure #:key native-inputs inputs #:allow-other-keys)
(invoke (search-input-file (or native-inputs inputs) "/bin/npm")
"--offline" "--ignore-scripts" "install"))
(define* (build #:key grammar-directories #:allow-other-keys)
(for-each (lambda (dir)
(with-directory-excursion dir
;; Avoid generating binding code for other languages, we do
;; not support this use-case yet and it relies on running
;; `node-gyp' to build native addons.
(invoke "tree-sitter" "generate" "--no-bindings")))
grammar-directories))
(define* (check #:key grammar-directories tests? #:allow-other-keys)
(when tests?
(for-each (lambda (dir)
(with-directory-excursion dir
(invoke "tree-sitter" "test")))
grammar-directories)))
(define* (install #:key target grammar-directories outputs #:allow-other-keys)
(let ((lib (string-append (assoc-ref outputs "out")
"/lib/tree-sitter")))
(mkdir-p lib)
(define (compile-language dir)
(with-directory-excursion dir
(let ((lang (assoc-ref (call-with-input-file "src/grammar.json"
read-json)
"name"))
(source-file (lambda (path)
(if (file-exists? path)
path
#f))))
(apply invoke
`(,(if target
(string-append target "-g++")
"g++")
"-shared"
"-fPIC"
"-fno-exceptions"
"-O2"
"-g"
"-o" ,(string-append lib "/libtree-sitter-" lang ".so")
;; An additional `scanner.{c,cc}' file is sometimes
;; provided.
,@(cond
((source-file "src/scanner.c")
=> (lambda (file) (list "-xc" "-std=c99" file)))
((source-file "src/scanner.cc")
=> (lambda (file) (list file)))
(else '()))
"-xc" "src/parser.c")))))
(for-each compile-language grammar-directories)))
(define* (install-js #:key native-inputs inputs outputs #:allow-other-keys)
(invoke (search-input-file (or native-inputs inputs) "/bin/npm")
"--prefix" (assoc-ref outputs "js")
"--global"
"--offline"
"--loglevel" "info"
"--production"
;; Skip scripts to prevent building bindings via GYP.
"--ignore-scripts"
"install" "../package.tgz"))
(define %standard-phases
(modify-phases node:%standard-phases
(replace 'patch-dependencies patch-dependencies)
(replace 'configure configure)
(replace 'build build)
(replace 'check check)
(replace 'install install)
(add-after 'install 'install-js install-js)))
(define* (tree-sitter-build #:key inputs (phases %standard-phases)
#:allow-other-keys #:rest args)
(apply node:node-build #:inputs inputs #:phases phases args))
;;; tree-sitter-build-system.scm ends here
|