;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2022 Luis Henrique Gomes Higino <luishenriquegh2701@gmail.com>
;;; 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 (gnu packages tree-sitter)
  #:use-module (guix gexp)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix build-system cargo)
  #:use-module (guix build-system gnu)
  #:use-module (guix git-download)
  #:use-module (guix packages)
  #:use-module (guix utils)
  #:use-module (gnu packages crates-graphics)
  #:use-module (gnu packages crates-io)
  #:use-module (gnu packages icu4c))

(define-public tree-sitter
  (package
    (name "tree-sitter")
    (version "0.20.6")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/tree-sitter/tree-sitter")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1z20518snyg0zp75qgs5bxmzjqws4dd19vnp6sya494za3qp5b6d"))
              (modules '((guix build utils)))
              (snippet '(begin
                          ;; Remove bundled ICU parts
                          (delete-file-recursively "lib/src/unicode")
                          #t))))
    (build-system gnu-build-system)
    (inputs (list icu4c))
    (arguments
     (list #:phases
           '(modify-phases %standard-phases
              (delete 'configure))
           #:tests? #f ; there are no tests for the runtime library
           #:make-flags
           #~(list (string-append "PREFIX="
                                  #$output)
                   (string-append "CC="
                                  #$(cc-for-target)))))
    (home-page "https://tree-sitter.github.io/tree-sitter/")
    (synopsis "Incremental parsing system for programming tools")
    (description
     "Tree-sitter is a parser generator tool and an incremental parsing
library.  It can build a concrete syntax tree for a source file and efficiently
update the syntax tree as the source file is edited.

Tree-sitter aims to be:

@itemize
@item General enough to parse any programming language
@item Fast enough to parse on every keystroke in a text editor
@item Robust enough to provide useful results even in the presence of syntax errors
@item Dependency-free so that the runtime library (which is written in pure C)
can be embedded in any application
@end itemize

This package includes the @code{libtree-sitter} runtime library.
")
    (license license:expat)))

(define-public tree-sitter-cli
  (package (inherit tree-sitter)
    (name "tree-sitter-cli")
    (source (origin
              (inherit (package-source tree-sitter))
              (snippet
               '(begin
                  ;; Remove the runtime library code and dynamically link to
                  ;; it instead.
                  (delete-file-recursively "lib/src")
                  (delete-file "lib/binding_rust/build.rs")
                  (with-output-to-file "lib/binding_rust/build.rs"
                    (lambda _
                      (format #t "fn main() {~@
                              println!(\"cargo:rustc-link-lib=tree-sitter\");~@
                              }~%")))
                  #t))))
    (build-system cargo-build-system)
    (inputs (list tree-sitter))
    (arguments
     `(;; Running test requires downloading fixtures, see the
       ;; script/fetch-fixtures script.
       #:tests? #f
       ;; We're only packaging the CLI program so we do not need to install
       ;; sources.
       #:install-source? #f
       #:cargo-inputs
       (("rust-ansi-term" ,rust-ansi-term-0.12)
        ("rust-anyhow" ,rust-anyhow-1)
        ("rust-atty" ,rust-atty-0.2)
        ("rust-clap" ,rust-clap-2)
        ("rust-difference" ,rust-difference-2)
        ("rust-html-escape" ,rust-html-escape-0.2)
        ("rust-libloading" ,rust-libloading-0.7)
        ("rust-rand" ,rust-rand-0.8)
        ("rust-rustc-hash" ,rust-rustc-hash-1)
        ("rust-semver" ,rust-semver-1)
        ("rust-smallbitvec" ,rust-smallbitvec-2)
        ("rust-thiserror" ,rust-thiserror-1)
        ("rust-tiny-http" ,rust-tiny-http-0.8)
        ("rust-toml" ,rust-toml-0.5)
        ("rust-walkdir" ,rust-walkdir-2)
        ("rust-webbrowser" ,rust-webbrowser-0.5)
        ("rust-which" ,rust-which-4))
       #:cargo-development-inputs
       (("rust-pretty-assertions" ,rust-pretty-assertions-0.7))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'delete-cargo.lock
           (lambda _ (delete-file "Cargo.lock")))
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin"))
                    (lib (string-append out "/lib")))
               (mkdir-p bin)
               (install-file "target/release/tree-sitter" bin)))))))
    (synopsis "Incremental parsing system for programming tools")
    (description "Tree-sitter is a parser generator tool and an incremental
parsing library.  It can build a concrete syntax tree for a source file and
efficiently update the syntax tree as the source file is edited.

Tree-sitter aims to be:

@enumerate
@item General enough to parse any programming language.
@item Fast enough to parse on every keystroke in a text editor.
@item Robust enough to provide useful results even in the presence of syntax
errors.
@item Dependency-free so that the runtime library (which is written in pure C)
can be embedded in any application.
@end enumerate

This package includes the @command{tree-sitter} command-line tool.")
    (license license:expat)))