;;; (This is also what shows up as an ENVIRONMENT value in macroexpansion.)
#!-sb-fluid (declaim (inline internal-make-lexenv)) ; only called in one place
(def!struct (lexenv
- (:constructor make-null-lexenv ())
- (:constructor internal-make-lexenv
- (funs vars blocks tags
+ (:print-function print-lexenv)
+ (:constructor make-null-lexenv ())
+ (:constructor internal-make-lexenv
+ (funs vars blocks tags
type-restrictions
- lambda cleanup handled-conditions
- disabled-package-locks policy)))
+ lambda cleanup handled-conditions
+ disabled-package-locks %policy user-data)))
;; an alist of (NAME . WHAT), where WHAT is either a FUNCTIONAL (a
;; local function), a DEFINED-FUN, representing an
;; INLINE/NOTINLINE declaration, or a list (MACRO . <function>) (a
(handled-conditions *handled-conditions*)
;; lexically disabled package locks (list of symbols)
(disabled-package-locks *disabled-package-locks*)
- ;; the current OPTIMIZE policy
- (policy *policy* :type policy))
+ ;; the current OPTIMIZE policy. this is null in the null environment,
+ ;; and the global policy is stored in *POLICY*. (Because we want to
+ ;; be able to affect it from :WITH-COMPILATION-UNIT.) NIL here also
+ ;; works as a convenient null-lexenv identifier.
+ (%policy nil :type policy)
+ ;; A list associating extra user info to symbols. The entries
+ ;; are of the form (:declare name . value),
+ ;; (:variable name key . value), or (:function name key . value)
+ (user-data nil :type list))
+
+(defun lexenv-policy (lexenv)
+ (or (lexenv-%policy lexenv) *policy*))
+
+(defun null-lexenv-p (lexenv)
+ (not (lexenv-%policy lexenv)))
;;; support for the idiom (in MACROEXPAND and elsewhere) that NIL is
;;; to be taken as a null lexical environment
(null (make-null-lexenv))
(lexenv x)))
+(defun print-lexenv (lexenv stream level)
+ (if (null-lexenv-p lexenv)
+ (print-unreadable-object (lexenv stream)
+ (write-string "NULL-LEXENV" stream))
+ (default-structure-print lexenv stream level)))
+
(defun maybe-inline-syntactic-closure (lambda lexenv)
(declare (type list lambda) (type lexenv lexenv))
(aver (eql (first lambda) 'lambda))
;; unfriendly foreign lisp environments, would be good to support in
;; the target compiler. -- CSR, 2002-05-13 and 2002-11-02
(let ((vars (lexenv-vars lexenv))
- (funs (lexenv-funs lexenv)))
+ (funs (lexenv-funs lexenv)))
(collect ((decls) (macros) (symbol-macros))
(cond
- ((or (lexenv-blocks lexenv) (lexenv-tags lexenv)) nil)
- ((and (null vars) (null funs)) `(lambda-with-lexenv
- nil nil nil
- ,@(cdr lambda)))
- ((dolist (x vars nil)
- #+sb-xc-host
- ;; KLUDGE: too complicated for cross-compilation
- (return t)
- #-sb-xc-host
- (let ((name (car x))
- (what (cdr x)))
- ;; only worry about the innermost binding
- (when (eq x (assoc name vars :test #'eq))
- (typecase what
- (cons
- (aver (eq (car what) 'macro))
- (symbol-macros x))
- (global-var
- ;; A global should not appear in the lexical
- ;; environment? Is this true? FIXME!
- (aver (eq (global-var-kind what) :special))
- (decls `(special ,name)))
- (t
- ;; we can't inline in the presence of this object
- (return t))))))
- nil)
- ((dolist (x funs nil)
- #+sb-xc-host
- ;; KLUDGE: too complicated for cross-compilation (and
- ;; failure of OAOO in comments, *sigh*)
- (return t)
- #-sb-xc-host
- (let ((name (car x))
- (what (cdr x)))
- ;; again, only worry about the innermost binding, but
- ;; functions can have name (SETF FOO) so we need to use
- ;; EQUAL for the test.
- (when (eq x (assoc name funs :test #'equal))
- (typecase what
- (cons
- (macros (cons name (function-lambda-expression (cdr what)))))
- ;; FIXME: Is there a good reason for this not to be
- ;; DEFINED-FUN (which :INCLUDEs GLOBAL-VAR, in case
- ;; you're wondering how this ever worked :-)? Maybe
- ;; in conjunction with an AVERrance that it's not an
- ;; (AND GLOBAL-VAR (NOT GLOBAL-FUN))? -- CSR,
- ;; 2002-07-08
- (global-var
- (when (defined-fun-p what)
- (decls `(,(car (rassoc (defined-fun-inlinep what)
- *inlinep-translations*))
+ ((or (lexenv-blocks lexenv) (lexenv-tags lexenv)) nil)
+ ((and (null vars) (null funs)) `(lambda-with-lexenv
+ nil nil nil
+ ,@(cdr lambda)))
+ ((dolist (x vars nil)
+ #+sb-xc-host
+ ;; KLUDGE: too complicated for cross-compilation
+ (return t)
+ #-sb-xc-host
+ (let ((name (car x))
+ (what (cdr x)))
+ ;; only worry about the innermost binding
+ (when (eq x (assoc name vars :test #'eq))
+ (typecase what
+ (cons
+ (aver (eq (car what) 'macro))
+ (symbol-macros x))
+ (global-var
+ ;; A global should not appear in the lexical
+ ;; environment? Is this true? FIXME!
+ (aver (eq (global-var-kind what) :special))
+ (decls `(special ,name)))
+ (t
+ ;; we can't inline in the presence of this object
+ (return t))))))
+ nil)
+ ((dolist (x funs nil)
+ #+sb-xc-host
+ ;; KLUDGE: too complicated for cross-compilation (and
+ ;; failure of OAOO in comments, *sigh*)
+ (return t)
+ #-sb-xc-host
+ (let ((name (car x))
+ (what (cdr x)))
+ ;; again, only worry about the innermost binding, but
+ ;; functions can have name (SETF FOO) so we need to use
+ ;; EQUAL for the test.
+ (when (eq x (assoc name funs :test #'equal))
+ (typecase what
+ (cons
+ (macros (cons name (function-lambda-expression (cdr what)))))
+ ;; FIXME: Is there a good reason for this not to be
+ ;; DEFINED-FUN (which :INCLUDEs GLOBAL-VAR, in case
+ ;; you're wondering how this ever worked :-)? Maybe
+ ;; in conjunction with an AVERrance that it's not an
+ ;; (AND GLOBAL-VAR (NOT GLOBAL-FUN))? -- CSR,
+ ;; 2002-07-08
+ (global-var
+ (when (defined-fun-p what)
+ (decls `(,(car (rassoc (defined-fun-inlinep what)
+ *inlinep-translations*))
,name))))
- (t (return t))))))
- nil)
- (t
- ;; if we get this far, we've successfully dealt with
- ;; everything in FUNS and VARS, so:
- `(lambda-with-lexenv ,(decls) ,(macros) ,(symbol-macros)
- ,@(cdr lambda)))))))
+ (t (return t))))))
+ nil)
+ (t
+ ;; if we get this far, we've successfully dealt with
+ ;; everything in FUNS and VARS, so:
+ `(lambda-with-lexenv ,(decls) ,(macros) ,(symbol-macros)
+ ,@(cdr lambda)))))))
projects / sbcl.git / blobdiff