mes/build-aux/mes-snarf.scm
Jan (janneke) Nieuwenhuizen 4613b070e4
core: Create symbols dynamically.
* include/mes/symbols.h: New file.
* include/mes/mes.hh: Include it.
* include/mes/constants.h: Remove symbol constants.
* src/symbols.c (init_symbols): Create symbols dynamically.
* build-aux/mes-snarf.scm (snarf-symbols): Update.
2020-06-16 15:59:26 +02:00

212 lines
8.4 KiB
Scheme
Executable file

#! /bin/sh
# -*-scheme-*-
exec ${GUILE-guile} --no-auto-compile -L $(dirname $0) -C $(dirname $0) -e '(mes-snarf)' -s "$0" "$@"
!#
;;; GNU Mes --- Maxwell Equations of Software
;;; Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;;
;;; mes-snarf.scm: This file is part of GNU Mes.
;;;
;;; GNU Mes 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 Mes 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 Mes. If not, see <http://www.gnu.org/licenses/>.
(define-module (mes-snarf)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-8)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-26)
#:use-module (ice-9 rdelim)
#:export (main))
(cond-expand
(mes
(define %scheme "mes"))
(guile-2
(define %scheme "guile")
(define-macro (mes-use-module . rest) #t))
(guile
(use-modules (ice-9 syncase))
(define %scheme "guile")
(define-macro (mes-use-module . rest) #t)))
(mes-use-module (mes guile))
(mes-use-module (srfi srfi-1))
(mes-use-module (srfi srfi-8))
(mes-use-module (srfi srfi-9))
(mes-use-module (srfi srfi-26))
(when (and=> (getenv "V") (lambda (v) (> (string->number v) 1)))
(format (current-error-port) "mes-snarf[~a]...\n" %scheme))
(define (char->char from to char)
(if (eq? char from) to char))
(define (string-replace-char string from to)
(string-map (cut char->char from to <>) string))
(define (string-replace-suffix string from to)
(if (string-suffix? from string)
(string-replace string to (- (string-length string) (string-length from)))
string))
(define (string-replace-string string from to)
(cond ((string-contains string from) => (lambda (i) (string-replace string to i (+ i (string-length from)))))
(else string)))
(define %gcc? #t)
(define-record-type <file> (make-file name content)
file?
(name file.name)
(content file.content))
(define-record-type <function> (make-function name formals annotation)
function?
(name function.name)
(formals function.formals)
(annotation function.annotation))
(define (function-scm-name f)
(or (assoc-ref (function.annotation f) 'name)
(let ((name ((compose
identity
(cut string-replace-char <> #\_ #\-)
(cut string-replace-string <> "_to_" "->")
(cut string-replace-suffix <> "_x" "!")
(cut string-replace-suffix <> "_x_" "!-")
(cut string-replace-suffix <> "_p" "?"))
(function.name f))))
(if (not (string-suffix? "-" name)) name
(string-append "core:" (string-drop-right name 1))))))
(define %builtin-prefix% "scm_")
(define (function-builtin-name f)
(string-append %builtin-prefix% (function.name f)))
(define %cell-prefix% "cell_")
(define (function-cell-name f)
(string-append %cell-prefix% (function.name f)))
(define %start 1)
(define (symbol->header s i)
(string-append
(format #f "// CONSTANT ~a ~a\n" s i)
(format #f "#define ~a ~a\n" s i)))
(define (function->header f i)
(let* ((arity (or (assoc-ref (function.annotation f) 'arity)
(if (string-null? (function.formals f)) 0
(length (string-split (function.formals f) #\,)))))
(n (if (eq? arity 'n) -1 arity)))
(format #f "SCM ~a (~a);\n" (function.name f) (function.formals f))))
(define (function->source f i)
(let* ((arity (or (assoc-ref (function.annotation f) 'arity)
(if (string-null? (function.formals f)) 0
(length (string-split (function.formals f) #\,)))))
(n (if (eq? arity 'n) -1 arity)))
(format #f " a = init_builtin (builtin_type, ~s, ~a, &~a, a);\n" (function-scm-name f) n (function.name f))))
(define (disjoin . predicates)
(lambda (. arguments)
(any (cut apply <> arguments) predicates)))
(define (snarf-symbols string)
(let* ((lines (string-split string #\newline))
(symbols (filter (cut string-contains <> " = init_symbol (") lines)))
(define (line->symbol line)
((compose
string-trim-both
(lambda (s) (string-take s (string-index s #\=))))
line))
(map line->symbol symbols)))
(define (string-split-string string sep)
(cond ((string-contains string sep) => (lambda (i) (list (string-take string i) (string-drop string (+ i (string-length sep))))))
(else (list string #f))))
(define (snarf-functions string)
(let ((lines (string-split string #\newline)))
(filter-map
(lambda (line previous)
(receive (function rest)
(apply values (string-split-string line " "))
(and function
(equal? (string-trim previous) "SCM")
(not (string-null? function))
(not (string-prefix? "#" function))
(not (string-prefix? "/" function))
rest
(receive (parameter-list annotation)
(apply values (string-split-string rest " /*:"))
(let* ((parameters (string-trim-both parameter-list))
(parameters (string-drop parameters 1))
(parameters (string-drop-right parameters 1))
(annotation (if (string? annotation) (string-trim-both annotation)
annotation))
(annotation (if (and (string? annotation)
(string-suffix? "*/" annotation))
(string-drop-right annotation 2)
annotation))
(formals (if (string-null? parameters) '()
(string-split parameters #\,)))
(formals (map string-trim formals)))
(and parameters
(let* ((non-SCM (filter (negate (cut string-prefix? "SCM" <>)) formals)))
(and (null? non-SCM)
(let ((annotation (and annotation (with-input-from-string annotation read))))
(make-function function parameters annotation))))))))))
lines (cons "\n" lines))))
(define (content? f)
((compose not string-null? file.content) f))
(define (internal? f)
((compose (cut assoc-ref <> 'internal) function.annotation) f))
(define (no-environment? f)
((compose (cut assoc-ref <> 'no-environment) function.annotation) f))
(define (generate-includes file-name)
(let* ((srcdest (or (getenv "srcdest") ""))
(string (with-input-from-file (string-append srcdest file-name) read-string))
(functions (snarf-functions string))
(functions (delete-duplicates functions (lambda (a b) (equal? (function.name a) (function.name b)))))
(functions (filter (negate internal?) functions))
(symbols (snarf-symbols string))
(base-name (basename file-name ".c"))
(dir (string-append (dirname file-name)))
(base-name (string-append dir "/" base-name))
(base-name (if %gcc? base-name
(string-append base-name ".mes")))
(header (make-file
(string-append base-name ".h")
(string-join (map function->header functions (iota (length functions) (+ %start (length symbols)))) "")))
(source (make-file
(string-append base-name ".i")
(string-join (map function->source (filter (negate no-environment?) functions) (iota (length functions) (+ (length symbols) %start))) "")))
(symbols.h (make-file
(string-append base-name ".symbols.h")
(string-join (map symbol->header symbols (iota (length symbols) %start)) ""))))
(list header source symbols.h)))
(define (file-write file)
(system* "mkdir" "-p" (dirname (file.name file)))
(with-output-to-file (file.name file) (lambda () (display (file.content file)))))
(define (main args)
(let* ((files (cdr args))
(files (append-map generate-includes files)))
(for-each file-write (filter content? files))))