;;; installed-scm-file
-;;;; Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002, 2003, 2004 Free Software Foundation, Inc.
+;;;; Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007
+;;;; Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
-;;;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;;;;
+
\f
;;; Commentary:
;;; Code:
\f
-;;; {Deprecation}
-;;;
-
-;; We don't have macros here, but we do want to define
-;; `begin-deprecated' early.
-
-(define begin-deprecated
- (procedure->memoizing-macro
- (lambda (exp env)
- (if (include-deprecated-features)
- `(begin ,@(cdr exp))
- `#f))))
-\f
;;; {Features}
-;;
+;;;
(define (provide sym)
(if (not (memq sym *features*))
(set! *features* (cons sym *features*))))
-;;; Return #t iff FEATURE is available to this Guile interpreter.
-;;; In SLIB, provided? also checks to see if the module is available.
-;;; We should do that too, but don't.
+;; Return #t iff FEATURE is available to this Guile interpreter. In SLIB,
+;; provided? also checks to see if the module is available. We should do that
+;; too, but don't.
+
(define (provided? feature)
(and (memq feature *features*) #t))
-(begin-deprecated
- (define (feature? sym)
- (issue-deprecation-warning
- "`feature?' is deprecated. Use `provided?' instead.")
- (provided? sym)))
+;; let format alias simple-format until the more complete version is loaded
-;;; let format alias simple-format until the more complete version is loaded
(define format simple-format)
+;; this is scheme wrapping the C code so the final pred call is a tail call,
+;; per SRFI-13 spec
+(define (string-any char_pred s . rest)
+ (let ((start (if (null? rest)
+ 0 (car rest)))
+ (end (if (or (null? rest) (null? (cdr rest)))
+ (string-length s) (cadr rest))))
+ (if (and (procedure? char_pred)
+ (> end start)
+ (<= end (string-length s))) ;; let c-code handle range error
+ (or (string-any-c-code char_pred s start (1- end))
+ (char_pred (string-ref s (1- end))))
+ (string-any-c-code char_pred s start end))))
+
+;; this is scheme wrapping the C code so the final pred call is a tail call,
+;; per SRFI-13 spec
+(define (string-every char_pred s . rest)
+ (let ((start (if (null? rest)
+ 0 (car rest)))
+ (end (if (or (null? rest) (null? (cdr rest)))
+ (string-length s) (cadr rest))))
+ (if (and (procedure? char_pred)
+ (> end start)
+ (<= end (string-length s))) ;; let c-code handle range error
+ (and (string-every-c-code char_pred s start (1- end))
+ (char_pred (string-ref s (1- end))))
+ (string-every-c-code char_pred s start end))))
+
+;; A variant of string-fill! that we keep for compatability
+;;
+(define (substring-fill! str start end fill)
+ (string-fill! str fill start end))
+
\f
-;;; {R4RS compliance}
-(primitive-load-path "ice-9/r4rs.scm")
+;;; {EVAL-CASE}
+;;;
+
+;; (eval-case ((situation*) forms)* (else forms)?)
+;;
+;; Evaluate certain code based on the situation that eval-case is used
+;; in. There are three situations defined. `load-toplevel' triggers for
+;; code evaluated at the top-level, for example from the REPL or when
+;; loading a file. `compile-toplevel' triggers for code compiled at the
+;; toplevel. `execute' triggers during execution of code not at the top
+;; level.
+
+(define eval-case
+ (procedure->memoizing-macro
+ (lambda (exp env)
+ (define (toplevel-env? env)
+ (or (not (pair? env)) (not (pair? (car env)))))
+ (define (syntax)
+ (error "syntax error in eval-case"))
+ (let loop ((clauses (cdr exp)))
+ (cond
+ ((null? clauses)
+ #f)
+ ((not (list? (car clauses)))
+ (syntax))
+ ((eq? 'else (caar clauses))
+ (or (null? (cdr clauses))
+ (syntax))
+ (cons 'begin (cdar clauses)))
+ ((not (list? (caar clauses)))
+ (syntax))
+ ((and (toplevel-env? env)
+ (memq 'load-toplevel (caar clauses)))
+ (cons 'begin (cdar clauses)))
+ (else
+ (loop (cdr clauses))))))))
\f
-;;; {Deprecated stuff}
-(begin-deprecated
- (primitive-load-path "ice-9/deprecated.scm"))
+;; Before compiling, make sure any symbols are resolved in the (guile)
+;; module, the primary location of those symbols, rather than in
+;; (guile-user), the default module that we compile in.
+
+(eval-case
+ ((compile-toplevel)
+ (set-current-module (resolve-module '(guile)))))
+
+;;; {Defmacros}
+;;;
+;;; Depends on: features, eval-case
+;;;
+
+(define macro-table (make-weak-key-hash-table 61))
+(define xformer-table (make-weak-key-hash-table 61))
+
+(define (defmacro? m) (hashq-ref macro-table m))
+(define (assert-defmacro?! m) (hashq-set! macro-table m #t))
+(define (defmacro-transformer m) (hashq-ref xformer-table m))
+(define (set-defmacro-transformer! m t) (hashq-set! xformer-table m t))
+
+(define defmacro:transformer
+ (lambda (f)
+ (let* ((xform (lambda (exp env)
+ (copy-tree (apply f (cdr exp)))))
+ (a (procedure->memoizing-macro xform)))
+ (assert-defmacro?! a)
+ (set-defmacro-transformer! a f)
+ a)))
+
+
+(define defmacro
+ (let ((defmacro-transformer
+ (lambda (name parms . body)
+ (let ((transformer `(lambda ,parms ,@body)))
+ `(eval-case
+ ((load-toplevel compile-toplevel)
+ (define ,name (defmacro:transformer ,transformer)))
+ (else
+ (error "defmacro can only be used at the top level")))))))
+ (defmacro:transformer defmacro-transformer)))
+
+
+;; XXX - should the definition of the car really be looked up in the
+;; current module?
+
+(define (macroexpand-1 e)
+ (cond
+ ((pair? e) (let* ((a (car e))
+ (val (and (symbol? a) (local-ref (list a)))))
+ (if (defmacro? val)
+ (apply (defmacro-transformer val) (cdr e))
+ e)))
+ (#t e)))
+
+(define (macroexpand e)
+ (cond
+ ((pair? e) (let* ((a (car e))
+ (val (and (symbol? a) (local-ref (list a)))))
+ (if (defmacro? val)
+ (macroexpand (apply (defmacro-transformer val) (cdr e)))
+ e)))
+ (#t e)))
+
+(provide 'defmacro)
\f
-;;; {Simple Debugging Tools}
-;;
+;;; {Deprecation}
+;;;
+;;; Depends on: defmacro
+;;;
+(defmacro begin-deprecated forms
+ (if (include-deprecated-features)
+ `(begin ,@forms)
+ (begin)))
+
+\f
+
+;;; {R4RS compliance}
+;;;
+
+(primitive-load-path "ice-9/r4rs")
+
+\f
+
+;;; {Simple Debugging Tools}
+;;;
;; peek takes any number of arguments, writes them to the
;; current ouput port, and returns the last argument.
(car (last-pair stuff)))))
\f
+
;;; {Trivial Functions}
;;;
(define (identity x) x)
-(define (1+ n) (+ n 1))
-(define (1- n) (+ n -1))
(define (and=> value procedure) (and value (procedure value)))
(define call/cc call-with-current-continuation)
(define (apply-to-args args fn) (apply fn args))
+(defmacro false-if-exception (expr)
+ `(catch #t (lambda () ,expr)
+ (lambda args #f)))
+
+\f
+
+;;; {General Properties}
+;;;
+
+;; This is a more modern interface to properties. It will replace all
+;; other property-like things eventually.
+
+(define (make-object-property)
+ (let ((prop (primitive-make-property #f)))
+ (make-procedure-with-setter
+ (lambda (obj) (primitive-property-ref prop obj))
+ (lambda (obj val) (primitive-property-set! prop obj val)))))
+
\f
;;; {Symbol Properties}
(if pair
(symbol-pset! sym (delq! pair (symbol-pref sym))))))
-;;; {General Properties}
-;;;
-
-;; This is a more modern interface to properties. It will replace all
-;; other property-like things eventually.
-
-(define (make-object-property)
- (let ((prop (primitive-make-property #f)))
- (make-procedure-with-setter
- (lambda (obj) (primitive-property-ref prop obj))
- (lambda (obj val) (primitive-property-set! prop obj val)))))
-
\f
;;; {Arrays}
;;;
-(if (provided? 'array)
- (primitive-load-path "ice-9/arrays.scm"))
+(define (array-shape a)
+ (map (lambda (ind) (if (number? ind) (list 0 (+ -1 ind)) ind))
+ (array-dimensions a)))
\f
+
;;; {Keywords}
;;;
-(define (symbol->keyword symbol)
- (make-keyword-from-dash-symbol (symbol-append '- symbol)))
-
-(define (keyword->symbol kw)
- (let ((sym (symbol->string (keyword-dash-symbol kw))))
- (string->symbol (substring sym 1 (string-length sym)))))
-
(define (kw-arg-ref args kw)
(let ((rem (member kw args)))
(and rem (pair? (cdr rem)) (cadr rem))))
\f
;;; {Structs}
+;;;
(define (struct-layout s)
(struct-ref (struct-vtable s) vtable-index-layout))
\f
-;;; Environments
-
-(define the-environment
- (procedure->syntax
- (lambda (x e)
- e)))
-
-(define the-root-environment (the-environment))
-
-(define (environment-module env)
- (let ((closure (and (pair? env) (car (last-pair env)))))
- (and closure (procedure-property closure 'module))))
-
-\f
;;; {Records}
;;;
(define (record-constructor rtd . opt)
(let ((field-names (if (pair? opt) (car opt) (record-type-fields rtd))))
- (local-eval `(lambda ,field-names
- (make-struct ',rtd 0 ,@(map (lambda (f)
- (if (memq f field-names)
- f
- #f))
- (record-type-fields rtd))))
- the-root-environment)))
-
+ (primitive-eval
+ `(lambda ,field-names
+ (make-struct ',rtd 0 ,@(map (lambda (f)
+ (if (memq f field-names)
+ f
+ #f))
+ (record-type-fields rtd)))))))
+
(define (record-predicate rtd)
(lambda (obj) (and (struct? obj) (eq? rtd (struct-vtable obj)))))
+(define (%record-type-error rtd obj) ;; private helper
+ (or (eq? rtd (record-type-descriptor obj))
+ (scm-error 'wrong-type-arg "%record-type-check"
+ "Wrong type record (want `~S'): ~S"
+ (list (record-type-name rtd) obj)
+ #f)))
+
(define (record-accessor rtd field-name)
- (let* ((pos (list-index (record-type-fields rtd) field-name)))
+ (let ((pos (list-index (record-type-fields rtd) field-name)))
(if (not pos)
(error 'no-such-field field-name))
- (local-eval `(lambda (obj)
- (and (eq? ',rtd (record-type-descriptor obj))
- (struct-ref obj ,pos)))
- the-root-environment)))
+ (lambda (obj)
+ (if (eq? (struct-vtable obj) rtd)
+ (struct-ref obj pos)
+ (%record-type-error rtd obj)))))
(define (record-modifier rtd field-name)
- (let* ((pos (list-index (record-type-fields rtd) field-name)))
+ (let ((pos (list-index (record-type-fields rtd) field-name)))
(if (not pos)
(error 'no-such-field field-name))
- (local-eval `(lambda (obj val)
- (and (eq? ',rtd (record-type-descriptor obj))
- (struct-set! obj ,pos val)))
- the-root-environment)))
-
+ (lambda (obj val)
+ (if (eq? (struct-vtable obj) rtd)
+ (struct-set! obj pos val)
+ (%record-type-error rtd obj)))))
(define (record? obj)
(and (struct? obj) (record-type? (struct-vtable obj))))
(provide 'record)
\f
+
;;; {Booleans}
;;;
(define (->bool x) (not (not x)))
\f
+
;;; {Symbols}
;;;
(string->symbol (apply string args)))
\f
+
;;; {Lists}
;;;
n
(loop (+ n 1) (cdr l))))))
-(define (make-list n . init)
- (if (pair? init) (set! init (car init)))
- (let loop ((answer '())
- (n n))
- (if (<= n 0)
- answer
- (loop (cons init answer) (- n 1)))))
-
\f
+
;;; {and-map and or-map}
;;;
;;; (and-map fn lst) is like (and (fn (car lst)) (fn (cadr lst)) (fn...) ...)
\f
(if (provided? 'posix)
- (primitive-load-path "ice-9/posix.scm"))
+ (primitive-load-path "ice-9/posix"))
(if (provided? 'socket)
- (primitive-load-path "ice-9/networking.scm"))
+ (primitive-load-path "ice-9/networking"))
;; For reference, Emacs file-exists-p uses stat in this same way.
;; ENHANCE-ME: Catching an exception from stat is a bit wasteful, do this in
#f)))))
(define (has-suffix? str suffix)
- (let ((sufl (string-length suffix))
- (sl (string-length str)))
- (and (> sl sufl)
- (string=? (substring str (- sl sufl) sl) suffix))))
+ (string-suffix? suffix str))
(define (system-error-errno args)
(if (eq? (car args) 'system-error)
#f))
\f
+
;;; {Error Handling}
;;;
(putenv name))
\f
+
;;; {Load Paths}
;;;
file)))
\f
+
;;; {Help for scm_shell}
+;;;
;;; The argument-processing code used by Guile-based shells generates
;;; Scheme code based on the argument list. This page contains help
;;; functions for the code it generates.
+;;;
(define (command-line) (program-arguments))
(primitive-load init-file))))
\f
+
+;;; {The interpreter stack}
+;;;
+
+(defmacro start-stack (tag exp)
+ `(%start-stack ,tag (lambda () ,exp)))
+
+\f
+
;;; {Loading by paths}
+;;;
;;; Load a Scheme source file named NAME, searching for it in the
;;; directories listed in %load-path, and applying each of the file
\f
+
;;; {Transcendental Functions}
;;;
;;; Derived from "Transcen.scm", Complex trancendental functions for SCM.
;;; See the file `COPYING' for terms applying to this program.
;;;
-(define (exp z)
- (if (real? z) ($exp z)
- (make-polar ($exp (real-part z)) (imag-part z))))
-
-(define (log z)
- (if (and (real? z) (>= z 0))
- ($log z)
- (make-rectangular ($log (magnitude z)) (angle z))))
-
-(define (sqrt z)
- (if (real? z)
- (if (negative? z) (make-rectangular 0 ($sqrt (- z)))
- ($sqrt z))
- (make-polar ($sqrt (magnitude z)) (/ (angle z) 2))))
-
(define expt
(let ((integer-expt integer-expt))
(lambda (z1 z2)
- (cond ((integer? z2)
- (if (negative? z2)
- (/ 1 (integer-expt z1 (- z2)))
- (integer-expt z1 z2)))
+ (cond ((and (exact? z2) (integer? z2))
+ (integer-expt z1 z2))
((and (real? z2) (real? z1) (>= z1 0))
($expt z1 z2))
(else
(/ (log (/ (- +i z) (+ +i z))) +2i))
($atan2 z (car y))))
-(define (log10 arg)
- (/ (log arg) (log 10)))
-
\f
;;; {Reader Extensions}
;;;
-
;;; Reader code for various "#c" forms.
;;;
"#. read expansion found and read-eval? is #f."))))
\f
+
;;; {Command Line Options}
;;;
;;; 'module, 'directory, 'interface, 'custom-interface. If no explicit kind
;;; is set, it defaults to 'module.
;;;
-;;; - duplicates-handlers
+;;; - duplicates-handlers: a list of procedures that get called to make a
+;;; choice between two duplicate bindings when name clashes occur. See the
+;;; `duplicate-handlers' global variable below.
;;;
-;;; - duplicates-interface
+;;; - observers: a list of procedures that get called when the module is
+;;; modified.
;;;
-;;; - observers
-;;;
-;;; - weak-observers
-;;;
-;;; - observer-id
+;;; - weak-observers: a weak-key hash table of procedures that get called
+;;; when the module is modified. See `module-observe-weak' for details.
;;;
;;; In addition, the module may (must?) contain a binding for
-;;; %module-public-interface... More explanations here...
+;;; `%module-public-interface'. This variable should be bound to a module
+;;; representing the exported interface of a module. See the
+;;; `module-public-interface' and `module-export!' procedures.
;;;
;;; !!! warning: The interface to lazy binder procedures is going
;;; to be changed in an incompatible way to permit all the basic
;;;
\f
+
;;; {Printing Modules}
+;;;
+
;; This is how modules are printed. You can re-define it.
;; (Redefining is actually more complicated than simply redefining
;; %print-module because that would only change the binding and not
;; is a (CLOSURE module symbol) which, as a last resort, can provide
;; bindings that would otherwise not be found locally in the module.
;;
-;; NOTE: If you change here, you also need to change libguile/modules.h.
+;; NOTE: If you change anything here, you also need to change
+;; libguile/modules.h.
;;
(define module-type
(make-record-type 'module
'(obarray uses binder eval-closure transformer name kind
- duplicates-handlers duplicates-interface
- observers weak-observers observer-id)
+ duplicates-handlers import-obarray
+ observers weak-observers)
%print-module))
;; make-module &opt size uses binder
(list-ref args index)
default))
+ (define %default-import-size
+ ;; Typical number of imported bindings actually used by a module.
+ 600)
+
(if (> (length args) 3)
(error "Too many args to make-module." args))
"Lazy-binder expected to be a procedure or #f." binder))
(let ((module (module-constructor (make-hash-table size)
- uses binder #f #f #f #f #f #f
+ uses binder #f #f #f #f #f
+ (make-hash-table %default-import-size)
'()
- (make-weak-value-hash-table 31)
- 0)))
+ (make-weak-key-hash-table 31))))
;; We can't pass this as an argument to module-constructor,
;; because we need it to close over a pointer to the module
(record-accessor module-type 'duplicates-handlers))
(define set-module-duplicates-handlers!
(record-modifier module-type 'duplicates-handlers))
-(define module-duplicates-interface
- (record-accessor module-type 'duplicates-interface))
-(define set-module-duplicates-interface!
- (record-modifier module-type 'duplicates-interface))
(define module-observers (record-accessor module-type 'observers))
(define set-module-observers! (record-modifier module-type 'observers))
(define module-weak-observers (record-accessor module-type 'weak-observers))
-(define module-observer-id (record-accessor module-type 'observer-id))
-(define set-module-observer-id! (record-modifier module-type 'observer-id))
(define module? (record-predicate module-type))
+(define module-import-obarray (record-accessor module-type 'import-obarray))
+
(define set-module-eval-closure!
(let ((setter (record-modifier module-type 'eval-closure)))
(lambda (module closure)
(set-procedure-property! closure 'module module))))
\f
+
;;; {Observer protocol}
;;;
(set-module-observers! module (cons proc (module-observers module)))
(cons module proc))
-(define (module-observe-weak module proc)
- (let ((id (module-observer-id module)))
- (hash-set! (module-weak-observers module) id proc)
- (set-module-observer-id! module (+ 1 id))
- (cons module id)))
+(define (module-observe-weak module observer-id . proc)
+ ;; Register PROC as an observer of MODULE under name OBSERVER-ID (which can
+ ;; be any Scheme object). PROC is invoked and passed MODULE any time
+ ;; MODULE is modified. PROC gets unregistered when OBSERVER-ID gets GC'd
+ ;; (thus, it is never unregistered if OBSERVER-ID is an immediate value,
+ ;; for instance).
+
+ ;; The two-argument version is kept for backward compatibility: when called
+ ;; with two arguments, the observer gets unregistered when closure PROC
+ ;; gets GC'd (making it impossible to use an anonymous lambda for PROC).
+
+ (let ((proc (if (null? proc) observer-id (car proc))))
+ (hashq-set! (module-weak-observers module) observer-id proc)))
(define (module-unobserve token)
(let ((module (car token))
(define (module-call-observers m)
(for-each (lambda (proc) (proc m)) (module-observers m))
- (hash-fold (lambda (id proc res) (proc m)) #f (module-weak-observers m)))
+
+ ;; We assume that weak observers don't (un)register themselves as they are
+ ;; called since this would preclude proper iteration over the hash table
+ ;; elements.
+ (hash-for-each (lambda (id proc) (proc m)) (module-weak-observers m)))
\f
+
;;; {Module Searching in General}
;;;
;;; We sometimes want to look for properties of a symbol
;;;
;;; If the symbol is not found at all, return #f.
;;;
-(define (module-local-variable m v)
-; (caddr
-; (list m v
- (let ((b (module-obarray-ref (module-obarray m) v)))
- (or (and (variable? b) b)
- (and (module-binder m)
- ((module-binder m) m v #f)))))
-;))
-
-;; module-variable module symbol
-;;
-;; like module-local-variable, except search the uses in the
-;; case V is not found in M.
-;;
-;; NOTE: This function is superseded with C code (see modules.c)
-;;; when using the standard eval closure.
-;;
-(define (module-variable m v)
- (module-search module-local-variable m v))
-
+;;; (This is now written in C, see `modules.c'.)
+;;;
;;; {Mapping modules x symbols --> bindings}
;;;
\f
+
;;; {Adding Variables to Modules}
;;;
-;;;
-
;; module-make-local-var! module symbol
;;
;; the standard eval closure defines a binding
(module-modified m)
b)))
- (and (module-binder m)
- ((module-binder m) m v #t))
- (begin
- (let ((answer (make-undefined-variable)))
- (module-add! m v answer)
- answer))))
+
+ ;; Create a new local variable.
+ (let ((local-var (make-undefined-variable)))
+ (module-add! m v local-var)
+ local-var)))
;; module-ensure-local-variable! module symbol
;;
(hash-for-each proc (module-obarray module)))
(define (module-map proc module)
- (hash-map proc (module-obarray module)))
+ (hash-map->list proc (module-obarray module)))
\f
\f
+
;;; {Module-based Loading}
;;;
(define basic-load load)
-(define (load-module filename)
+(define (load-module filename . 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))))))
+ (apply 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}
-;;
+;;;
+
;; Returns the value of a variable called NAME in MODULE or any of its
;; used modules. If there is no such variable, then if the optional third
;; argument DEFAULT is present, it is returned; otherwise an error is signaled.
;; Add INTERFACE to the list of interfaces used by MODULE.
;;
(define (module-use! module interface)
- (set-module-uses! module
- (cons interface
- (filter (lambda (m)
- (not (equal? (module-name m)
- (module-name interface))))
- (module-uses module))))
- (module-modified module))
+ (if (not (eq? module interface))
+ (begin
+ ;; Newly used modules must be appended rather than consed, so that
+ ;; `module-variable' traverses the use list starting from the first
+ ;; used module.
+ (set-module-uses! module
+ (append (filter (lambda (m)
+ (not
+ (equal? (module-name m)
+ (module-name interface))))
+ (module-uses module))
+ (list interface)))
+
+ (module-modified module))))
;; MODULE-USE-INTERFACES! module interfaces
;;
;; Same as MODULE-USE! but add multiple interfaces and check for duplicates
;;
(define (module-use-interfaces! module interfaces)
- (let* ((duplicates-handlers? (or (module-duplicates-handlers module)
- (default-duplicate-binding-procedures)))
- (uses (module-uses module)))
- ;; remove duplicates-interface
- (set! uses (delq! (module-duplicates-interface module) uses))
- ;; remove interfaces to be added
- (for-each (lambda (interface)
- (set! uses
- (filter (lambda (m)
- (not (equal? (module-name m)
- (module-name interface))))
- uses)))
- interfaces)
- ;; add interfaces to use list
- (set-module-uses! module uses)
- (for-each (lambda (interface)
- (and duplicates-handlers?
- ;; perform duplicate checking
- (process-duplicates module interface))
- (set! uses (cons interface uses))
- (set-module-uses! module uses))
- interfaces)
- ;; add duplicates interface
- (if (module-duplicates-interface module)
- (set-module-uses! module
- (cons (module-duplicates-interface module) uses)))
- (module-modified module)))
+ (set-module-uses! module
+ (append (module-uses module) interfaces))
+ (module-modified module))
\f
+
;;; {Recursive Namespaces}
;;;
-;;;
;;; A hierarchical namespace emerges if we consider some module to be
;;; root, and variables bound to modules as nested namespaces.
;;;
\f
-;;; {The (app) module}
+
+;;; {The (%app) module}
;;;
;;; The root of conventionally named objects not directly in the top level.
;;;
-;;; (app modules)
-;;; (app modules guile)
+;;; (%app modules)
+;;; (%app modules guile)
;;;
;;; The directory of all modules and the standard root module.
;;;
(set-module-public-interface! module interface))))
(if (and (not (memq the-scm-module (module-uses module)))
(not (eq? module the-root-module)))
- (set-module-uses! module
- (append (module-uses module) (list the-scm-module)))))
+ ;; Import the default set of bindings (from the SCM module) in MODULE.
+ (module-use! module the-scm-module)))
;; NOTE: This binding is used in libguile/modules.c.
;;
-(define (resolve-module name . maybe-autoload)
- (let ((full-name (append '(app modules) name)))
- (let ((already (local-ref full-name)))
- (if already
- ;; The module already exists...
- (if (and (or (null? maybe-autoload) (car maybe-autoload))
- (not (module-public-interface already)))
- ;; ...but we are told to load and it doesn't contain source, so
- (begin
- (try-load-module name)
- already)
- ;; simply return it.
- already)
- (begin
- ;; Try to autoload it if we are told so
- (if (or (null? maybe-autoload) (car maybe-autoload))
- (try-load-module name))
- ;; Get/create it.
- (make-modules-in (current-module) full-name))))))
+(define resolve-module
+ (let ((the-root-module the-root-module))
+ (lambda (name . maybe-autoload)
+ (if (equal? name '(guile))
+ the-root-module
+ (let ((full-name (append '(%app modules) name)))
+ (let ((already (nested-ref the-root-module full-name)))
+ (if already
+ ;; The module already exists...
+ (if (and (or (null? maybe-autoload) (car maybe-autoload))
+ (not (module-public-interface already)))
+ ;; ...but we are told to load and it doesn't contain source, so
+ (begin
+ (try-load-module name)
+ already)
+ ;; simply return it.
+ already)
+ (begin
+ ;; Try to autoload it if we are told so
+ (if (or (null? maybe-autoload) (car maybe-autoload))
+ (try-load-module name))
+ ;; Get/create it.
+ (make-modules-in (current-module) full-name)))))))))
;; Cheat. These bindings are needed by modules.c, but we don't want
;; to move their real definition here because that would be unnatural.
(define process-define-module #f)
(define process-use-modules #f)
(define module-export! #f)
+(define default-duplicate-binding-procedures #f)
+
+(define %app (make-module 31))
+(define app %app) ;; for backwards compatability
+
+(local-define '(%app modules) (make-module 31))
+(local-define '(%app modules guile) the-root-module)
;; This boots the module system. All bindings needed by modules.c
;; must have been defined by now.
;;
(set-current-module the-root-module)
-(define app (make-module 31))
-(local-define '(app modules) (make-module 31))
-(local-define '(app modules guile) the-root-module)
-
-;; (define-special-value '(app modules new-ws) (lambda () (make-scm-module)))
+;; (define-special-value '(%app modules new-ws) (lambda () (make-scm-module)))
(define (try-load-module name)
(or (begin-deprecated (try-module-linked name))
(error "unrecognized define-module argument" arg))))
(beautify-user-module! module)
(let loop ((kws kws)
- (reversed-interfaces '())
- (exports '())
- (re-exports '())
- (replacements '()))
+ (reversed-interfaces '())
+ (exports '())
+ (re-exports '())
+ (replacements '())
+ (autoloads '()))
+
(if (null? kws)
- (call-with-deferred-observers
- (lambda ()
- (module-use-interfaces! module (reverse reversed-interfaces))
- (module-export! module exports)
- (module-replace! module replacements)
- (module-re-export! module re-exports)))
- (case (car kws)
- ((#:use-module #:use-syntax)
- (or (pair? (cdr kws))
- (unrecognized kws))
- (let* ((interface-args (cadr kws))
- (interface (apply resolve-interface interface-args)))
- (and (eq? (car kws) #:use-syntax)
- (or (symbol? (caar interface-args))
- (error "invalid module name for use-syntax"
- (car interface-args)))
- (set-module-transformer!
- module
- (module-ref interface
- (car (last-pair (car interface-args)))
- #f)))
- (loop (cddr kws)
- (cons interface reversed-interfaces)
- exports
- re-exports
- replacements)))
- ((#:autoload)
- (or (and (pair? (cdr kws)) (pair? (cddr kws)))
- (unrecognized kws))
- (loop (cdddr kws)
- (cons (make-autoload-interface module
- (cadr kws)
- (caddr kws))
- reversed-interfaces)
- exports
- re-exports
- replacements))
- ((#:no-backtrace)
- (set-system-module! module #t)
- (loop (cdr kws) reversed-interfaces exports re-exports replacements))
- ((#:pure)
- (purify-module! module)
- (loop (cdr kws) reversed-interfaces exports re-exports replacements))
- ((#:duplicates)
- (if (not (pair? (cdr kws)))
- (unrecognized kws))
- (set-module-duplicates-handlers!
- module
- (lookup-duplicates-handlers (cadr kws)))
- (loop (cddr kws) reversed-interfaces exports re-exports replacements))
- ((#:export #:export-syntax)
- (or (pair? (cdr kws))
- (unrecognized kws))
- (loop (cddr kws)
- reversed-interfaces
- (append (cadr kws) exports)
- re-exports
- replacements))
- ((#:re-export #:re-export-syntax)
- (or (pair? (cdr kws))
- (unrecognized kws))
- (loop (cddr kws)
- reversed-interfaces
- exports
- (append (cadr kws) re-exports)
- replacements))
- ((#:replace #:replace-syntax)
- (or (pair? (cdr kws))
- (unrecognized kws))
- (loop (cddr kws)
- reversed-interfaces
- exports
- re-exports
- (append (cadr kws) replacements)))
- (else
- (unrecognized kws)))))
+ (call-with-deferred-observers
+ (lambda ()
+ (module-use-interfaces! module (reverse reversed-interfaces))
+ (module-export! module exports)
+ (module-replace! module replacements)
+ (module-re-export! module re-exports)
+ (if (not (null? autoloads))
+ (apply module-autoload! module autoloads))))
+ (case (car kws)
+ ((#:use-module #:use-syntax)
+ (or (pair? (cdr kws))
+ (unrecognized kws))
+ (let* ((interface-args (cadr kws))
+ (interface (apply resolve-interface interface-args)))
+ (and (eq? (car kws) #:use-syntax)
+ (or (symbol? (caar interface-args))
+ (error "invalid module name for use-syntax"
+ (car interface-args)))
+ (set-module-transformer!
+ module
+ (module-ref interface
+ (car (last-pair (car interface-args)))
+ #f)))
+ (loop (cddr kws)
+ (cons interface reversed-interfaces)
+ exports
+ re-exports
+ replacements
+ autoloads)))
+ ((#:autoload)
+ (or (and (pair? (cdr kws)) (pair? (cddr kws)))
+ (unrecognized kws))
+ (loop (cdddr kws)
+ reversed-interfaces
+ exports
+ re-exports
+ replacements
+ (let ((name (cadr kws))
+ (bindings (caddr kws)))
+ (cons* name bindings autoloads))))
+ ((#:no-backtrace)
+ (set-system-module! module #t)
+ (loop (cdr kws) reversed-interfaces exports re-exports
+ replacements autoloads))
+ ((#:pure)
+ (purify-module! module)
+ (loop (cdr kws) reversed-interfaces exports re-exports
+ replacements autoloads))
+ ((#:duplicates)
+ (if (not (pair? (cdr kws)))
+ (unrecognized kws))
+ (set-module-duplicates-handlers!
+ module
+ (lookup-duplicates-handlers (cadr kws)))
+ (loop (cddr kws) reversed-interfaces exports re-exports
+ replacements autoloads))
+ ((#:export #:export-syntax)
+ (or (pair? (cdr kws))
+ (unrecognized kws))
+ (loop (cddr kws)
+ reversed-interfaces
+ (append (cadr kws) exports)
+ re-exports
+ replacements
+ autoloads))
+ ((#:re-export #:re-export-syntax)
+ (or (pair? (cdr kws))
+ (unrecognized kws))
+ (loop (cddr kws)
+ reversed-interfaces
+ exports
+ (append (cadr kws) re-exports)
+ replacements
+ autoloads))
+ ((#:replace #:replace-syntax)
+ (or (pair? (cdr kws))
+ (unrecognized kws))
+ (loop (cddr kws)
+ reversed-interfaces
+ exports
+ re-exports
+ (append (cadr kws) replacements)
+ autoloads))
+ (else
+ (unrecognized kws)))))
(run-hook module-defined-hook module)
module))
;; module.
(define module-defined-hook (make-hook 1))
+\f
+
;;; {Autoload}
+;;;
(define (make-autoload-interface module name bindings)
(let ((b (lambda (a sym definep)
(let ((i (module-public-interface (resolve-module name))))
(if (not i)
(error "missing interface for module" name))
- ;; Replace autoload-interface with interface
- (set-car! (memq a (module-uses module)) i)
+ (let ((autoload (memq a (module-uses module))))
+ ;; Replace autoload-interface with actual interface if
+ ;; that has not happened yet.
+ (if (pair? autoload)
+ (set-car! autoload i)))
(module-local-variable i sym))))))
- (module-constructor (make-hash-table 0) '() b #f #f name 'autoload #f #f
- '() (make-weak-value-hash-table 31) 0)))
+ (module-constructor (make-hash-table 0) '() b #f #f name 'autoload #f
+ (make-hash-table 0) '() (make-weak-value-hash-table 31))))
+
+(define (module-autoload! module . args)
+ "Have @var{module} automatically load the module named @var{name} when one
+of the symbols listed in @var{bindings} is looked up. @var{args} should be a
+list of module-name/binding-list pairs, e.g., as in @code{(module-autoload!
+module '(ice-9 q) '(make-q q-length))}."
+ (let loop ((args args))
+ (cond ((null? args)
+ #t)
+ ((null? (cdr args))
+ (error "invalid name+binding autoload list" args))
+ (else
+ (let ((name (car args))
+ (bindings (cadr args)))
+ (module-use! module (make-autoload-interface module
+ name bindings))
+ (loop (cddr args)))))))
+
;;; {Compiled module}
-(define load-compiled #f)
+(if (not (defined? 'load-compiled))
+ (define load-compiled #f))
\f
+
;;; {Autoloading modules}
+;;;
(define autoloads-in-progress '())
(lambda () (autoload-in-progress! dir-hint name))
(lambda ()
(let ((file (in-vicinity dir-hint name)))
- (cond ((and load-compiled
- (%search-load-path (string-append file ".go")))
- => (lambda (full)
- (load-file load-compiled full)))
- ((%search-load-path file)
- => (lambda (full)
- (load-file primitive-load full))))))
+ (let ((compiled (and load-compiled
+ (%search-load-path
+ (string-append file ".go"))))
+ (source (%search-load-path file)))
+ (cond ((and source
+ (or (not compiled)
+ (< (stat:mtime (stat compiled))
+ (stat:mtime (stat source)))))
+ (if compiled
+ (warn "source file" source "newer than" compiled))
+ (with-fluids ((current-reader #f))
+ (load-file primitive-load source)))
+ (compiled
+ (load-file load-compiled compiled))))))
(lambda () (set-autoloaded! dir-hint name didit)))
didit))))
\f
-;;; Dynamic linking of modules
+
+;;; {Dynamic linking of modules}
+;;;
(define autoloads-done '((guile . guile)))
(set! autoloads-done (delete! n autoloads-done))
(set! autoloads-in-progress (delete! n autoloads-in-progress)))))
-
-
-\f
-;; {EVAL-CASE}
-;;
-;; (eval-case ((situation*) forms)* (else forms)?)
-;;
-;; Evaluate certain code based on the situation that eval-case is used
-;; in. The only defined situation right now is `load-toplevel' which
-;; triggers for code evaluated at the top-level, for example from the
-;; REPL or when loading a file.
-
-(define eval-case
- (procedure->memoizing-macro
- (lambda (exp env)
- (define (toplevel-env? env)
- (or (not (pair? env)) (not (pair? (car env)))))
- (define (syntax)
- (error "syntax error in eval-case"))
- (let loop ((clauses (cdr exp)))
- (cond
- ((null? clauses)
- #f)
- ((not (list? (car clauses)))
- (syntax))
- ((eq? 'else (caar clauses))
- (or (null? (cdr clauses))
- (syntax))
- (cons 'begin (cdar clauses)))
- ((not (list? (caar clauses)))
- (syntax))
- ((and (toplevel-env? env)
- (memq 'load-toplevel (caar clauses)))
- (cons 'begin (cdar clauses)))
- (else
- (loop (cdr clauses))))))))
-
-\f
-;;; {Macros}
-;;;
-
-(define (primitive-macro? m)
- (and (macro? m)
- (not (macro-transformer m))))
-
-;;; {Defmacros}
-;;;
-(define macro-table (make-weak-key-hash-table 61))
-(define xformer-table (make-weak-key-hash-table 61))
-
-(define (defmacro? m) (hashq-ref macro-table m))
-(define (assert-defmacro?! m) (hashq-set! macro-table m #t))
-(define (defmacro-transformer m) (hashq-ref xformer-table m))
-(define (set-defmacro-transformer! m t) (hashq-set! xformer-table m t))
-
-(define defmacro:transformer
- (lambda (f)
- (let* ((xform (lambda (exp env)
- (copy-tree (apply f (cdr exp)))))
- (a (procedure->memoizing-macro xform)))
- (assert-defmacro?! a)
- (set-defmacro-transformer! a f)
- a)))
-
-
-(define defmacro
- (let ((defmacro-transformer
- (lambda (name parms . body)
- (let ((transformer `(lambda ,parms ,@body)))
- `(eval-case
- ((load-toplevel)
- (define ,name (defmacro:transformer ,transformer)))
- (else
- (error "defmacro can only be used at the top level")))))))
- (defmacro:transformer defmacro-transformer)))
-
-(define defmacro:syntax-transformer
- (lambda (f)
- (procedure->syntax
- (lambda (exp env)
- (copy-tree (apply f (cdr exp)))))))
-
-
-;; XXX - should the definition of the car really be looked up in the
-;; current module?
-
-(define (macroexpand-1 e)
- (cond
- ((pair? e) (let* ((a (car e))
- (val (and (symbol? a) (local-ref (list a)))))
- (if (defmacro? val)
- (apply (defmacro-transformer val) (cdr e))
- e)))
- (#t e)))
-
-(define (macroexpand e)
- (cond
- ((pair? e) (let* ((a (car e))
- (val (and (symbol? a) (local-ref (list a)))))
- (if (defmacro? val)
- (macroexpand (apply (defmacro-transformer val) (cdr e)))
- e)))
- (#t e)))
-
-(provide 'defmacro)
-
\f
;;; {Run-time options}
+;;;
-(define define-option-interface
+(defmacro define-option-interface (option-group)
(let* ((option-name car)
(option-value cadr)
(option-documentation caddr)
- (print-option (lambda (option)
- (display (option-name option))
- (if (< (string-length
- (symbol->string (option-name option)))
- 8)
- (display #\tab))
- (display #\tab)
- (display (option-value option))
- (display #\tab)
- (display (option-documentation option))
- (newline)))
-
;; Below follow the macros defining the run-time option interfaces.
(make-options (lambda (interface)
(cond ((null? args) (,interface))
((list? (car args))
(,interface (car args)) (,interface))
- (else (for-each ,print-option
- (,interface #t)))))))
+ (else (for-each
+ (lambda (option)
+ (display (option-name option))
+ (if (< (string-length
+ (symbol->string (option-name option)))
+ 8)
+ (display #\tab))
+ (display #\tab)
+ (display (option-value option))
+ (display #\tab)
+ (display (option-documentation option))
+ (newline))
+ (,interface #t)))))))
(make-enable (lambda (interface)
`(lambda flags
flags)
(,interface options)
(,interface))))))
- (procedure->memoizing-macro
- (lambda (exp env)
- (let* ((option-group (cadr exp))
- (interface (car option-group))
- (options/enable/disable (cadr option-group)))
- `(begin
- (define ,(car options/enable/disable)
- ,(make-options interface))
- (define ,(cadr options/enable/disable)
- ,(make-enable interface))
- (define ,(caddr options/enable/disable)
- ,(make-disable interface))
- (defmacro ,(caaddr option-group) (opt val)
- `(,,(car options/enable/disable)
- (append (,,(car options/enable/disable))
- (list ',opt ,val))))))))))
+ (let* ((interface (car option-group))
+ (options/enable/disable (cadr option-group)))
+ `(begin
+ (define ,(car options/enable/disable)
+ ,(make-options interface))
+ (define ,(cadr options/enable/disable)
+ ,(make-enable interface))
+ (define ,(caddr options/enable/disable)
+ ,(make-disable interface))
+ (defmacro ,(caaddr option-group) (opt val)
+ `(,',(car options/enable/disable)
+ (append (,',(car options/enable/disable))
+ (list ',opt ,val))))))))
(define-option-interface
(eval-options-interface
(catch #t
(lambda ()
- (lazy-catch #t
- (lambda ()
- (call-with-unblocked-asyncs
- (lambda ()
- (with-traps
- (lambda ()
- (first)
-
- ;; This line is needed because mark
- ;; doesn't do closures quite right.
- ;; Unreferenced locals should be
- ;; collected.
- ;;
- (set! first #f)
- (let loop ((v (thunk)))
- (loop (thunk)))
- #f)))))
-
- ;; Use a closure here rather than
- ;; just `lazy-handler-dispatch' so
- ;; that lookup of
- ;; lazy-handler-dispatch's value is
- ;; deferred until a throw occurs.
- ;; This means that if code executed
- ;; in the REPL just above set!s
- ;; lazy-handler-dispatch, the new
- ;; value will be used to handle the
- ;; next throw from the REPL.
- (lambda args
- (apply lazy-handler-dispatch args))))
+ (call-with-unblocked-asyncs
+ (lambda ()
+ (with-traps
+ (lambda ()
+ (first)
+
+ ;; This line is needed because mark
+ ;; doesn't do closures quite right.
+ ;; Unreferenced locals should be
+ ;; collected.
+ (set! first #f)
+ (let loop ((v (thunk)))
+ (loop (thunk)))
+ #f)))))
(lambda (key . args)
(case key
(cond ((= (length args) 4)
(apply handle-system-error key args))
(else
- (apply bad-throw key args))))))))))
+ (apply bad-throw key args)))))))
+
+ ;; Note that having just `lazy-handler-dispatch'
+ ;; here is connected with the mechanism that
+ ;; produces a nice backtrace upon error. If, for
+ ;; example, this is replaced with (lambda args
+ ;; (apply lazy-handler-dispatch args)), the stack
+ ;; cutting (in save-stack) goes wrong and ends up
+ ;; saving no stack at all, so there is no
+ ;; backtrace.
+ lazy-handler-dispatch)))
+
(if next (loop next) status)))
(set! set-batch-mode?! (lambda (arg)
(cond (arg
(let ((cep (current-error-port)))
(cond ((not (stack? (fluid-ref the-last-stack))))
((memq 'backtrace (debug-options-interface))
- (run-hook before-backtrace-hook)
- (newline cep)
- (display "Backtrace:\n")
- (display-backtrace (fluid-ref the-last-stack) cep)
- (newline cep)
- (run-hook after-backtrace-hook)))
+ (let ((highlights (if (or (eq? key 'wrong-type-arg)
+ (eq? key 'out-of-range))
+ (list-ref args 3)
+ '())))
+ (run-hook before-backtrace-hook)
+ (newline cep)
+ (display "Backtrace:\n")
+ (display-backtrace (fluid-ref the-last-stack) cep
+ #f #f highlights)
+ (newline cep)
+ (run-hook after-backtrace-hook))))
(run-hook before-error-hook)
(apply display-error (fluid-ref the-last-stack) cep args)
(run-hook after-error-hook)
;;; the readline library.
(define repl-reader
(lambda (prompt)
- (display prompt)
+ (display (if (string? prompt) prompt (prompt)))
(force-output)
(run-hook before-read-hook)
- (read (current-input-port))))
+ ((or (fluid-ref current-reader) read) (current-input-port))))
(define (scm-style-repl)
\f
+
;;; {IOTA functions: generating lists of numbers}
+;;;
(define (iota n)
(let loop ((count (1- n)) (result '()))
(loop (1- count) (cons count result)))))
\f
+
;;; {collect}
;;;
;;; Similar to `begin' but returns a list of the results of all constituent
;;; forms instead of the result of the last form.
;;; (The definition relies on the current left-to-right
;;; order of evaluation of operands in applications.)
+;;;
(defmacro collect forms
(cons 'list forms))
+\f
+
;;; {with-fluids}
+;;;
;; with-fluids is a convenience wrapper for the builtin procedure
;; `with-fluids*'. The syntax is just like `let':
;; coaxing
;;
+(define (primitive-macro? m)
+ (and (macro? m)
+ (not (macro-transformer m))))
+
(defmacro define-macro (first . rest)
(let ((name (if (symbol? first) first (car first)))
(transformer
(car rest)
`(lambda ,(cdr first) ,@rest))))
`(eval-case
- ((load-toplevel)
+ ((load-toplevel compile-toplevel)
(define ,name (defmacro:transformer ,transformer)))
(else
(error "define-macro can only be used at the top level")))))
-(defmacro define-syntax-macro (first . rest)
- (let ((name (if (symbol? first) first (car first)))
- (transformer
- (if (symbol? first)
- (car rest)
- `(lambda ,(cdr first) ,@rest))))
- `(eval-case
- ((load-toplevel)
- (define ,name (defmacro:syntax-transformer ,transformer)))
- (else
- (error "define-syntax-macro can only be used at the top level")))))
+\f
;;; {While}
;;;
;; `while' even when recursing. `while-helper' is an easy way to keep the
;; `key' binding away from the cond and body code.
;;
+;; FIXME: This is supposed to have an `unquote' on the `do' the same used
+;; for lambda and not, so as to protect against any user rebinding of that
+;; symbol, but unfortunately an unquote breaks with ice-9 syncase, eg.
+;;
+;; (use-modules (ice-9 syncase))
+;; (while #f)
+;; => ERROR: invalid syntax ()
+;;
+;; This is probably a bug in syncase.
+;;
(define-macro (while cond . body)
- (define (while-helper proc)
- (do ((key (make-symbol "while-key")))
- ((catch key
- (lambda ()
- (proc (lambda () (throw key #t))
- (lambda () (throw key #f))))
- (lambda (key arg) arg)))))
- `(,while-helper (,lambda (break continue)
- (,do ()
- ((,not ,cond))
- ,@body)
- #t)))
+ (let ((key (make-symbol "while-key")))
+ `(do ()
+ ((catch ',key
+ (lambda ()
+ (let ((break (lambda () (throw ',key #t)))
+ (continue (lambda () (throw ',key #f))))
+ (do ()
+ ((not ,cond))
+ ,@body)
+ #t))
+ (lambda (key arg)
+ arg))))))
\f
+
;;; {Module System Macros}
;;;
;; Return a list of expressions that evaluate to the appropriate
;; arguments for resolve-interface according to SPEC.
+(eval-case
+ ((compile-toplevel)
+ (if (memq 'prefix (read-options))
+ (error "boot-9 must be compiled with #:kw, not :kw"))))
+
(define (compile-interface-spec spec)
(define (make-keyarg sym key quote?)
(cond ((or (memq sym spec)
(defmacro define-module args
`(eval-case
- ((load-toplevel)
+ ((load-toplevel compile-toplevel)
(let ((m (process-define-module
(list ,@(compile-define-module-args args)))))
(set-current-module m)
(defmacro use-modules modules
`(eval-case
- ((load-toplevel)
+ ((load-toplevel compile-toplevel)
(process-use-modules
(list ,@(map (lambda (m)
`(list ,@(compile-interface-spec m)))
(defmacro use-syntax (spec)
`(eval-case
- ((load-toplevel)
+ ((load-toplevel compile-toplevel)
,@(if (pair? spec)
`((process-use-modules (list
(list ,@(compile-interface-spec spec))))
(let ((name (defined-name (car args))))
`(begin
(define-private ,@args)
- (eval-case ((load-toplevel) (export ,name))))))))
+ (eval-case ((load-toplevel compile-toplevel) (export ,name))))))))
(defmacro defmacro-public args
(define (syntax)
(#t
(let ((name (defined-name (car args))))
`(begin
- (eval-case ((load-toplevel) (export-syntax ,name)))
+ (eval-case ((load-toplevel compile-toplevel) (export-syntax ,name)))
(defmacro ,@args))))))
;; Export a local variable
(defmacro export names
`(eval-case
- ((load-toplevel)
+ ((load-toplevel compile-toplevel)
(call-with-deferred-observers
(lambda ()
(module-export! (current-module) ',names))))
(defmacro re-export names
`(eval-case
- ((load-toplevel)
+ ((load-toplevel compile-toplevel)
(call-with-deferred-observers
(lambda ()
(module-re-export! (current-module) ',names))))
;; Indeed, all references to global variables are memoized into such
;; variable objects.
+;; FIXME: these don't work with the compiler
(define-macro (@ mod-name var-name)
(let ((var (module-variable (resolve-interface mod-name) var-name)))
(if (not var)
var))
\f
+
;;; {Parameters}
;;;
(make fluid converter)))))
\f
+
;;; {Handling of duplicate imported bindings}
;;;
#f))
(define (warn module name int1 val1 int2 val2 var val)
- (format #t
+ (format (current-error-port)
"WARNING: ~A: `~A' imported from both ~A and ~A\n"
(module-name module)
name
(define (warn-override-core module name int1 val1 int2 val2 var val)
(and (eq? int1 the-scm-module)
(begin
- (format #t
+ (format (current-error-port)
"WARNING: ~A: imported module ~A overrides core binding `~A'\n"
(module-name module)
(module-name int2)
(lookup-duplicates-handlers handler-names))
handler-names)))
-(define (make-duplicates-interface)
- (let ((m (make-module)))
- (set-module-kind! m 'custom-interface)
- (set-module-name! m 'duplicates)
- m))
-
-(define (process-duplicates module interface)
- (let* ((duplicates-handlers (or (module-duplicates-handlers module)
- (default-duplicate-binding-procedures)))
- (duplicates-interface (module-duplicates-interface module)))
- (module-for-each
- (lambda (name var)
- (cond ((module-import-interface module name)
- =>
- (lambda (prev-interface)
- (let ((var1 (module-local-variable prev-interface name))
- (var2 (module-local-variable interface name)))
- (if (not (eq? var1 var2))
- (begin
- (if (not duplicates-interface)
- (begin
- (set! duplicates-interface
- (make-duplicates-interface))
- (set-module-duplicates-interface!
- module
- duplicates-interface)))
- (let* ((var (module-local-variable duplicates-interface
- name))
- (val (and var
- (variable-bound? var)
- (variable-ref var))))
- (let loop ((duplicates-handlers duplicates-handlers))
- (cond ((null? duplicates-handlers))
- (((car duplicates-handlers)
- module
- name
- prev-interface
- (and (variable-bound? var1)
- (variable-ref var1))
- interface
- (and (variable-bound? var2)
- (variable-ref var2))
- var
- val)
- =>
- (lambda (var)
- (module-add! duplicates-interface name var)))
- (else
- (loop (cdr duplicates-handlers)))))))))))))
- interface)))
-
\f
;;; {`cond-expand' for SRFI-0 support.}
;;;
;;; Currently, the following feature identifiers are supported:
;;;
-;;; guile r5rs srfi-0
+;;; guile r5rs srfi-0 srfi-4 srfi-6 srfi-13 srfi-14 srfi-55 srfi-61
;;;
;;; Remember to update the features list when adding more SRFIs.
+;;;
(define %cond-expand-features
;; Adjust the above comment when changing this.
- '(guile r5rs srfi-0))
+ '(guile
+ r5rs
+ srfi-0 ;; cond-expand itself
+ srfi-4 ;; homogenous numeric vectors
+ srfi-6 ;; open-input-string etc, in the guile core
+ srfi-13 ;; string library
+ srfi-14 ;; character sets
+ srfi-55 ;; require-extension
+ srfi-61 ;; general cond clause
+ ))
;; This table maps module public interfaces to the list of features.
;;
;; numbers, which are the numbers of the SRFIs to be loaded on startup.
;;
(define (use-srfis srfis)
- (let lp ((s srfis))
- (if (pair? s)
- (let* ((srfi (string->symbol
- (string-append "srfi-" (number->string (car s)))))
- (mod-i (resolve-interface (list 'srfi srfi))))
- (module-use! (current-module) mod-i)
- (lp (cdr s))))))
+ (process-use-modules
+ (map (lambda (num)
+ (list (list 'srfi (string->symbol
+ (string-append "srfi-" (number->string num))))))
+ srfis)))
+
+\f
+
+;;; srfi-55: require-extension
+;;;
+
+(define-macro (require-extension extension-spec)
+ ;; This macro only handles the srfi extension, which, at present, is
+ ;; the only one defined by the standard.
+ (if (not (pair? extension-spec))
+ (scm-error 'wrong-type-arg "require-extension"
+ "Not an extension: ~S" (list extension-spec) #f))
+ (let ((extension (car extension-spec))
+ (extension-args (cdr extension-spec)))
+ (case extension
+ ((srfi)
+ (let ((use-list '()))
+ (for-each
+ (lambda (i)
+ (if (not (integer? i))
+ (scm-error 'wrong-type-arg "require-extension"
+ "Invalid srfi name: ~S" (list i) #f))
+ (let ((srfi-sym (string->symbol
+ (string-append "srfi-" (number->string i)))))
+ (if (not (memq srfi-sym %cond-expand-features))
+ (set! use-list (cons `(use-modules (srfi ,srfi-sym))
+ use-list)))))
+ extension-args)
+ (if (pair? use-list)
+ ;; i.e. (begin (use-modules x) (use-modules y) (use-modules z))
+ `(begin ,@(reverse! use-list)))))
+ (else
+ (scm-error
+ 'wrong-type-arg "require-extension"
+ "Not a recognized extension type: ~S" (list extension) #f)))))
\f
;;; {Load emacs interface support if emacs option is given.}
+;;;
(define (named-module-use! user usee)
(module-use! (resolve-module user) (resolve-interface usee)))
;; Use some convenient modules (in reverse order)
- (if (provided? 'regex)
- (module-use! guile-user-module (resolve-interface '(ice-9 regex))))
- (if (provided? 'threads)
- (module-use! guile-user-module (resolve-interface '(ice-9 threads))))
- ;; load debugger on demand
- (module-use! guile-user-module
- (make-autoload-interface guile-user-module
- '(ice-9 debugger) '(debug)))
- (module-use! guile-user-module (resolve-interface '(ice-9 session)))
- (module-use! guile-user-module (resolve-interface '(ice-9 debug)))
- ;; so that builtin bindings will be checked first
- (module-use! guile-user-module (resolve-interface '(guile)))
-
(set-current-module guile-user-module)
+ (process-use-modules
+ (append
+ '(((ice-9 r5rs))
+ ((ice-9 session))
+ ((ice-9 debug)))
+ (if (provided? 'regex)
+ '(((ice-9 regex)))
+ '())
+ (if (provided? 'threads)
+ '(((ice-9 threads)))
+ '())))
+ ;; load debugger on demand
+ (module-autoload! guile-user-module '(ice-9 debugger) '(debug))
+ ;; Note: SIGFPE, SIGSEGV and SIGBUS are actually "query-only" (see
+ ;; scmsigs.c scm_sigaction_for_thread), so the handlers setup here have
+ ;; no effect.
(let ((old-handlers #f)
+ (start-repl (module-ref (resolve-interface '(system repl repl))
+ 'start-repl))
(signals (if (provided? 'posix)
`((,SIGINT . "User interrupt")
(,SIGFPE . "Arithmetic error")
- (,SIGBUS . "Bad memory access (bus error)")
(,SIGSEGV
. "Bad memory access (Segmentation violation)"))
'())))
+ ;; no SIGBUS on mingw
+ (if (defined? 'SIGBUS)
+ (set! signals (acons SIGBUS "Bad memory access (bus error)"
+ signals)))
(dynamic-wind
;; the protected thunk.
(lambda ()
- (let ((status (scm-style-repl)))
+ (let ((status (start-repl 'scheme)))
(run-hook exit-hook)
status))
(cdr old-handler))))
signals old-handlers))))))
-(defmacro false-if-exception (expr)
- `(,catch #t (,lambda () ,expr)
- (,lambda args #f)))
-
;;; This hook is run at the very end of an interactive session.
;;;
(define exit-hook (make-hook))
\f
-(append! %load-path (list "."))
-;; Place the user in the guile-user module.
-;;
+;;; {Deprecated stuff}
+;;;
+
+(begin-deprecated
+ (define (feature? sym)
+ (issue-deprecation-warning
+ "`feature?' is deprecated. Use `provided?' instead.")
+ (provided? sym)))
+
+(begin-deprecated
+ (primitive-load-path "ice-9/deprecated"))
+
+\f
+
+;;; Place the user in the guile-user module.
+;;;
(define-module (guile-user))
HCoop / bpt / guile.git / blobdiff