X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Freadtable.lisp;h=0df3891f81867bb65d7e8ba2093fabcb6c36781b;hb=0e3c4b4db102bd204a30402d7e5a0de44aea57ce;hp=3764b16bf4196cdb16350fe7e259241e30d0f2ea;hpb=8731c1a7c1a585d190151fa881050fb5e14c0616;p=sbcl.git

diff --git a/src/code/readtable.lisp b/src/code/readtable.lisp
index 3764b16..0df3891 100644
--- a/src/code/readtable.lisp
+++ b/src/code/readtable.lisp
@@ -12,34 +12,48 @@
 (in-package "SB!IMPL")
 
 (sb!xc:deftype attribute-table ()
-  '(simple-array (unsigned-byte 8) (#.sb!xc:char-code-limit)))
+  '(simple-array (unsigned-byte 8) (#.base-char-code-limit)))
 
 ;;; constants for readtable character attributes. These are all as in
 ;;; the manual.
+;;;
+;;; FIXME: wait a minute.  Firstly, I doubt they're in the manual.
+;;; Secondly, the numerical order of these constants is coupled with
+;;; code in CHAR-CLASS{,2,3} in the reader implementation, so beware
+;;; when changing them.
 (def!constant +char-attr-whitespace+ 0)
 (def!constant +char-attr-terminating-macro+ 1)
-(def!constant +char-attr-escape+ 2)
-(def!constant +char-attr-constituent+ 3)
-(def!constant +char-attr-constituent-dot+ 4)
-(def!constant +char-attr-constituent-expt+ 5)
-(def!constant +char-attr-constituent-slash+ 6)
-(def!constant +char-attr-constituent-digit+ 7)
-(def!constant +char-attr-constituent-sign+ 8)
-;; the "9" entry intentionally left blank for some reason -- WHN 19990806
-(def!constant +char-attr-multiple-escape+ 10)
-(def!constant +char-attr-package-delimiter+ 11)
-(def!constant +char-attr-delimiter+ 12) ; (a fake for READ-UNQUALIFIED-TOKEN)
+(def!constant +char-attr-single-escape+ 2)
+(def!constant +char-attr-multiple-escape+ 3)
+(def!constant +char-attr-constituent+ 4)
+(def!constant +char-attr-constituent-dot+ 5)
+(def!constant +char-attr-constituent-expt+ 6)
+(def!constant +char-attr-constituent-slash+ 7)
+(def!constant +char-attr-constituent-digit+ 8)
+(def!constant +char-attr-constituent-sign+ 9)
+;;; the following two are not static but depend on *READ-BASE*.
+;;; DECIMAL-DIGIT is for characters being digits in base 10 but not in
+;;; base *READ-BASE* (which is therefore perforce smaller than 10);
+;;; DIGIT-OR-EXPT is for characters being both exponent markers and
+;;; digits in base *READ-BASE* (which is therefore perforce larger
+;;; than 10).  -- CSR, 2004-03-16
+(def!constant +char-attr-constituent-decimal-digit+ 10)
+(def!constant +char-attr-constituent-digit-or-expt+ 11)
+
+(def!constant +char-attr-package-delimiter+ 12)
+(def!constant +char-attr-invalid+ 13)
+(def!constant +char-attr-delimiter+ 14) ; (a fake for READ-UNQUALIFIED-TOKEN)
 
 (sb!xc:defstruct (readtable (:conc-name nil)
-			    (:predicate readtablep)
-			    ;; ANSI requires a CL:COPY-READTABLE to do
-			    ;; a deep copy, so the DEFSTRUCT-generated
-			    ;; default is not suitable.
-			    (:copier nil))
+                            (:predicate readtablep)
+                            ;; ANSI requires a CL:COPY-READTABLE to do
+                            ;; a deep copy, so the DEFSTRUCT-generated
+                            ;; default is not suitable.
+                            (:copier nil))
   #!+sb-doc
   "A READTABLE is a data structure that maps characters into syntax
-   types for the Common Lisp expression reader."
-  ;; The CHARACTER-ATTRIBUTE-TABLE is a vector of CHAR-CODE-LIMIT
+types for the Common Lisp expression reader."
+  ;; The CHARACTER-ATTRIBUTE-TABLE is a vector of BASE-CHAR-CODE-LIMIT
   ;; integers for describing the character type. Conceptually, there
   ;; are 4 distinct "primary" character attributes:
   ;; +CHAR-ATTR-WHITESPACE+, +CHAR-ATTR-TERMINATING-MACRO+,
@@ -50,21 +64,23 @@
   ;; In order to make READ-TOKEN fast, all this information is stored
   ;; in the character attribute table by having different varieties of
   ;; constituents.
-  (character-attribute-table
-   (make-array sb!xc:char-code-limit
-	       :element-type '(unsigned-byte 8)
-	       :initial-element +char-attr-constituent+)
+  (character-attribute-array
+   (make-array base-char-code-limit
+               :element-type '(unsigned-byte 8)
+               :initial-element +char-attr-constituent+)
    :type attribute-table)
-  ;; The CHARACTER-MACRO-TABLE is a vector of CHAR-CODE-LIMIT
+  (character-attribute-hash-table (make-hash-table) :type hash-table)
+  ;; The CHARACTER-MACRO-TABLE is a vector of BASE-CHAR-CODE-LIMIT
   ;; functions. One of these functions called with appropriate
   ;; arguments whenever any non-WHITESPACE character is encountered
   ;; inside READ-PRESERVING-WHITESPACE. These functions are used to
   ;; implement user-defined read-macros, system read-macros, and the
   ;; number-symbol reader.
-  (character-macro-table
-   (make-array sb!xc:char-code-limit :initial-element #'undefined-macro-char)
-   :type (simple-vector #.sb!xc:char-code-limit))
-  ;; an alist from dispatch characters to vectors of CHAR-CODE-LIMIT
-  ;; functions, for use in defining dispatching macros (like #-macro)
+  (character-macro-array
+   (make-array base-char-code-limit :initial-element #'undefined-macro-char)
+   :type (simple-vector #.base-char-code-limit))
+  (character-macro-hash-table (make-hash-table) :type hash-table)
+  ;; an alist from dispatch characters to hash-tables akin to
+  ;; CHARACTER-MACRO-HASH-TABLE.
   (dispatch-tables () :type list)
-  (readtable-case :upcase :type (member :upcase :downcase :preserve :invert)))
+  (%readtable-case :upcase :type (member :upcase :downcase :preserve :invert)))