(set! %load-hook %load-announce)
-(define* (load name #:optional reader)
- ;; Returns the .go file corresponding to `name'. Does not search load
- ;; paths, only the fallback path. If the .go file is missing or out of
- ;; date, and autocompilation is enabled, will try autocompilation, just
- ;; as primitive-load-path does internally. primitive-load is
- ;; unaffected. Returns #f if autocompilation failed or was disabled.
- ;;
- ;; NB: Unless we need to compile the file, this function should not cause
- ;; (system base compile) to be loaded up. For that reason compiled-file-name
- ;; partially duplicates functionality from (system base compile).
- (define (compiled-file-name canon-path)
- (and %compile-fallback-path
- (string-append
- %compile-fallback-path
- ;; no need for '/' separator here, canon-path is absolute
- canon-path
- (cond ((or (null? %load-compiled-extensions)
- (string-null? (car %load-compiled-extensions)))
- (warn "invalid %load-compiled-extensions"
- %load-compiled-extensions)
- ".go")
- (else (car %load-compiled-extensions))))))
- (define (fresh-compiled-file-name go-path)
- (catch #t
- (lambda ()
- (let* ((scmstat (stat name))
- (gostat (stat go-path #f)))
- (if (and gostat
- (or (> (stat:mtime gostat) (stat:mtime scmstat))
- (and (= (stat:mtime gostat) (stat:mtime scmstat))
- (>= (stat:mtimensec gostat)
- (stat:mtimensec scmstat)))))
- go-path
- (begin
- (if gostat
- (format (current-error-port)
- ";;; note: source file ~a\n;;; newer than compiled ~a\n"
- name go-path))
- (cond
- (%load-should-autocompile
- (%warn-autocompilation-enabled)
- (format (current-error-port) ";;; compiling ~a\n" name)
- ;; This use of @ is (ironically?) boot-safe, as modules have
- ;; not been booted yet, so the resolve-module call in psyntax
- ;; doesn't try to load a module, and compile-file will be
- ;; treated as a function, not a macro.
- (let ((cfn ((@ (system base compile) compile-file) name
- #:env (current-module))))
- (format (current-error-port) ";;; compiled ~a\n" cfn)
- cfn))
- (else #f))))))
- (lambda (k . args)
- (format (current-error-port)
- ";;; WARNING: compilation of ~a failed:\n;;; key ~a, throw_args ~s\n"
- name k args)
- #f)))
- (with-fluids ((current-reader reader))
- (let ((cfn (and=> (and=> (false-if-exception (canonicalize-path name))
- compiled-file-name)
- fresh-compiled-file-name)))
- (if cfn
- (load-compiled cfn)
- (start-stack 'load-stack
- (primitive-load name))))))
-
\f
;;; {Reader Extensions}
(set-current-module outer-module)
(set! outer-module #f)))))
-(define basic-load load)
-
-(define* (load-module filename #:optional reader)
- (save-module-excursion
- (lambda ()
- (let ((oldname (and (current-load-port)
- (port-filename (current-load-port)))))
- (basic-load (if (and oldname
- (> (string-length filename) 0)
- (not (char=? (string-ref filename 0) #\/))
- (not (string=? (dirname oldname) ".")))
- (string-append (dirname oldname) "/" filename)
- filename)
- reader)))))
-
-
\f
;;; {MODULE-REF -- exported}
((_ name ...)
(re-export name ...))))
-(define load load-module)
-
\f
;;; {Parameters}
\f
+;;; {`load'.}
+;;;
+;;; Load is tricky when combined with relative paths, compilation, and
+;;; the filesystem. If a path is relative, what is it relative to? The
+;;; path of the source file at the time it was compiled? The path of
+;;; the compiled file? What if both or either were installed? And how
+;;; do you get that information? Tricky, I say.
+;;;
+;;; To get around all of this, we're going to do something nasty, and
+;;; turn `load' into a macro. That way it can know the path of the
+;;; source file with respect to which it was invoked, so it can resolve
+;;; relative paths with respect to the original source path.
+;;;
+;;; There is an exception, and that is that if the source file was in
+;;; the load path when it was compiled, instead of looking up against
+;;; the absolute source location, we load-from-path against the relative
+;;; source location.
+;;;
+
+(define* (load-in-vicinity dir path #:optional reader)
+ ;; Returns the .go file corresponding to `name'. Does not search load
+ ;; paths, only the fallback path. If the .go file is missing or out of
+ ;; date, and autocompilation is enabled, will try autocompilation, just
+ ;; as primitive-load-path does internally. primitive-load is
+ ;; unaffected. Returns #f if autocompilation failed or was disabled.
+ ;;
+ ;; NB: Unless we need to compile the file, this function should not cause
+ ;; (system base compile) to be loaded up. For that reason compiled-file-name
+ ;; partially duplicates functionality from (system base compile).
+ ;;
+ (define (compiled-file-name canon-path)
+ (and %compile-fallback-path
+ (string-append
+ %compile-fallback-path
+ ;; no need for '/' separator here, canon-path is absolute
+ canon-path
+ (cond ((or (null? %load-compiled-extensions)
+ (string-null? (car %load-compiled-extensions)))
+ (warn "invalid %load-compiled-extensions"
+ %load-compiled-extensions)
+ ".go")
+ (else (car %load-compiled-extensions))))))
+
+ (define (fresh-compiled-file-name name go-path)
+ (catch #t
+ (lambda ()
+ (let* ((scmstat (stat name))
+ (gostat (stat go-path #f)))
+ (if (and gostat
+ (or (> (stat:mtime gostat) (stat:mtime scmstat))
+ (and (= (stat:mtime gostat) (stat:mtime scmstat))
+ (>= (stat:mtimensec gostat)
+ (stat:mtimensec scmstat)))))
+ go-path
+ (begin
+ (if gostat
+ (format (current-error-port)
+ ";;; note: source file ~a\n;;; newer than compiled ~a\n"
+ name go-path))
+ (cond
+ (%load-should-autocompile
+ (%warn-autocompilation-enabled)
+ (format (current-error-port) ";;; compiling ~a\n" name)
+ (let ((cfn ((module-ref
+ (resolve-interface '(system base compile))
+ 'compile-file)
+ name
+ #:env (current-module))))
+ (format (current-error-port) ";;; compiled ~a\n" cfn)
+ cfn))
+ (else #f))))))
+ (lambda (k . args)
+ (format (current-error-port)
+ ";;; WARNING: compilation of ~a failed:\n;;; key ~a, throw_args ~s\n"
+ name k args)
+ #f)))
+
+ (define (absolute-path? path)
+ (string-prefix? "/" path))
+
+ (define (load-absolute abs-path)
+ (let ((cfn (let ((canon (false-if-exception (canonicalize-path abs-path))))
+ (and canon
+ (let ((go-path (compiled-file-name canon)))
+ (and go-path
+ (fresh-compiled-file-name abs-path go-path)))))))
+ (if cfn
+ (load-compiled cfn)
+ (start-stack 'load-stack
+ (primitive-load abs-path)))))
+
+ (save-module-excursion
+ (lambda ()
+ (with-fluids ((current-reader reader)
+ (%file-port-name-canonicalization 'relative))
+ (cond
+ ((or (absolute-path? path))
+ (load-absolute path))
+ ((absolute-path? dir)
+ (load-absolute (in-vicinity dir path)))
+ (else
+ (load-from-path (in-vicinity dir path))))))))
+
+(define-syntax load
+ (make-variable-transformer
+ (lambda (x)
+ (let* ((src (syntax-source x))
+ (file (and src (assq-ref src 'filename)))
+ (dir (and (string? file) (dirname file))))
+ (syntax-case x ()
+ ((_ arg ...)
+ #`(load-in-vicinity #,(or dir #'(getcwd)) arg ...))
+ (id
+ (identifier? #'id)
+ #`(lambda args
+ (apply load-in-vicinity #,(or dir #'(getcwd)) args))))))))
+
+\f
+
;;; {`cond-expand' for SRFI-0 support.}
;;;
;;; This syntactic form expands into different commands or
HCoop / bpt / guile.git / commitdiff