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4eb1a6d 0.pre7.74:
William Harold Newman authored
1 for 0.7.0:
a530bbe Initial revision
William Harold Newman authored
2
4eb1a6d 0.pre7.74:
William Harold Newman authored
3 * filed off the roughest edges (or, perhaps, at least hammered down the
4 protruding rusty nails and snipped off the trailing razor wire,
5 leaving some filing for later:-) from the monster
6 EVAL/EVAL-WHEN/%COMPILE/DEFUN/DEFSTRUCT cleanup:
7 ** substantially rewrote DEFSTRUCT implementation to work
8 cleanly with EVAL-WHEN, not sleazily use DEFUN for
9 structure functions, implement out-of-line structure
10 accessors as closures, reduce or eliminate non-ANSI
11 magicality of structure functions
12 *** made structure type tests work again
13 *** got rid of bogus warnings about "redefinition" of
14 structure accessors
15 ** made inlining DEFUN inside MACROLET work again
16 ** made %COMPILE set up debugging data more like the way the
17 debugger expects (and maybe even completely
18 correctly:-)
19 * incompatible changes listed in NEWS:
20 ** changed debugger prompt to "5]", "5[2]", "5[3]", etc.
21 ** changed default output representation of *PRINT-ESCAPE*-ed
22 unprintable ASCII characters to #\Nul, #\Soh, etc.
23 * some easy FIXMEs with high disruptive potential:
24 ** Search lists go away.
25 ** Grep for ~D and and change most of them to ~S.
26 * more renaming in global external names:
27 ** used DEFINE-THE-FOO-THING and DEFFOO style consistently (and
28 deprecated supported extensions named in the DEF-FOO
29 style, e.g. SB-ALIEN:DEF-ALIEN-ROUTINE)
30 ** reserved DO-FOO-style names for iteration macros
31 ** finished s/FUNCTION/FUN/
32 ** s/VARIABLE/VAR/
33 ** s/TOPLEVEL/TOP-LEVEL/
34 * global style systematization:
35 ** s/#'(lambda/(lambda/
36 ** four-space indentation in C
37 =======================================================================
38 for early 0.7.x:
a530bbe Initial revision
William Harold Newman authored
39
4eb1a6d 0.pre7.74:
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40 * building with CLISP (or explaining why not)
41 * faster bootstrapping (both make.sh and slam.sh)
42 ** added mechanisms for automatically finding dead code, and
43 used them to remove dead code
44 ** moved stuff from warm init into cold init where possible
45 (so that slam.sh will run faster and also just because
46 ideally everything would be in cold init)
47 ** profiled and tweaked
48 * more EVAL/EVAL-WHEN/%COMPILE/DEFUN/DEFSTRUCT cleanup:
49 ** made %COMPILE understand magicality of DEFUN FOO
50 w.r.t. e.g. preexisting inlineness of FOO
51 ** used %COMPILE where COMPILE-TOP-LEVEL used to be used
52 ** removed now-redundant COMPILE-TOP-LEVEL and
53 FUNCTIONAL-KIND=:TOP-LEVEL stuff from the compiler
54 ** made FUNCTION-NAME logic work on closures, so that
55 various public functions like CL:PACKAGEP which
56 are now implemented as closures (because
57 they're structure slot accessors) won't be so
58 nasty in the debugger
59 * rewrote long-standing confusing error restarts for redefining
60 DEFSTRUCTs
61 * outstanding embarrassments
62 ** cut-and-pasted DEF-BOOLEAN-ATTRIBUTE (maybe easier to fix
63 now that EVAL-WHEN does what it should..)
64 ** incomplete manual
65 ** :IGNORE-ERRORS-P cruft in stems-and-flags.lisp-expr
66 ** weird double-loading (first in GENESIS, then in warm init)
67 of src/assembly/target/*.lisp stuff, and the associated
68 weirdness of the half-baked state (compiler almost but
69 not quite ready for prime time..) of the system after
70 cold init
71 * fixups now feasible because of pre7 changes
72 ** ANSIfied DECLAIM INLINE stuff (deprecating MAYBE-INLINE)
73 * miscellaneous simple refactoring
74 * belated renaming:
75 ** renamed %PRIMITIVE to %VOP
76 * These days ANSI C has inline functions, so..
77 ** redid many cpp macros as inline functions:
78 HeaderValue, Pointerp, CEILING, ALIGNED_SIZE,
79 GET_FREE_POINTER, SET_FREE_POINTER,
80 GET_GC_TRIGGER, SET_GC_TRIGGER, GetBSP, SetBSP,
81 os_trunc_foo(), os_round_up_foo()
82 ** removed various avoid-evaluating-C-macro-arg-twice
83 cruft
84 * added mechanisms for automatically finding dead symbols is
85 package-data.lisp-expr (i.e. those symbols not bound,
86 fbound, defined as types, or whatever), and used them
87 to remove dead symbols
88 * made system handle stack overflow safely unless SAFETY is dominated
89 by SPEED or SPACE
90 =======================================================================
91 for 1.0:
a530bbe Initial revision
William Harold Newman authored
92
4eb1a6d 0.pre7.74:
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93 * refactored in preparation for moving CLOS into cold init and merging
94 SB-PCL:FOO with CL:FOO (for FOO=CLASS, FOO=CLASS-OF, etc.)
95 ** systematized support for MOP (new regression tests, maybe
96 new SB-MOP package..) to try to make sure things don't
97 get mislaid in the upcoming CLOS restructuring
98 ** extracted type system from SB-KERNEL into new SB-TYPE
99 package
100 ** reimplemented GENERIC-FUNCTION as a primitive object (or
101 maybe made SB-MOP:FUNCALLABLE-STANDARD-OBJECT the
102 primitive object, and then let GENERIC-FUNCTIONs
103 inherit from that) instead of structures with
104 :ALTERNATE-METACLASS and funcallableness. Now
105 FUNCALLABLE-INSTANCE can go away. (And now the new
106 funcallable primitive objects need to go into
107 collections like *FUN-HEADER-WIDETAGS* where
108 FUNCALLABLE-INSTANCE objects used to be.)
109 ** reimplemented CONDITIONs as primitive objects instead of
110 structures with :ALTERNATE-METACLASS. Now (between
111 this and the change to GENERIC-FUNCTIONs)
112 DEFSTRUCT :ALTERNATE-METACLASS can go away.
113 ** (maybe) Now INSTANCE_POINTER_LOWTAG can become just
114 STRUCTURE_POINTER_LOWTAG, and the concept of
115 SB-KERNEL:INSTANCE (including INSTANCEP,
116 (SPECIFIER-TYPE 'INSTANCE), etc.) can go away.
117 * moved CLOS into cold init, in order to allow CLOS to be used in the
118 implementation of the core system (e.g. the type system and the
119 compiler) and in order to support merger of CL:CLASS with
120 SB-PCL:CLASS
121 * (maybe) eliminated warm init altogether in favor of cold init
122 * (maybe, especially if warm init can be eliminated) rationalized
123 the build process, fixing miscellaneous pre-0.5.0 stuff that's
124 transparently not the right thing
125 ** removed separate build directories, now just building in
126 place with .sbclcoldfasl extensions
127 * (maybe) more refactoring in preparation for merging SB-PCL:FOO
128 into CL:FOO: reimplemented type system OO dispatch
129 (!DEFINE-TYPE-METHOD, etc.) in terms of CLOS OO dispatch
130 * merged SB-PCL:FOO into CL:FOO (and similarly CLASS-OF, etc.)
131 * added some automatic tests for basic binary compatibility, in hopes
132 that it might be practical to maintain binary compatibility
133 between minor maintenance releases on the stable branch (but no
134 promises, sorry, since I've never tried to do this before, and
135 have no idea how much of a pain this'll be)
136 =======================================================================
137 other priorities, no particular time:
a530bbe Initial revision
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138
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139 * bug fixes, especially really annoying bugs (ANSI or not) and any
140 ANSI bugs (i.e. not just bugs in extras like the debugger or
141 "declarations are assertions", but violations of the standard)
142 * better communication with the outside world (scratching WHN's
143 personal itch): I don't want socket-level stuff so much as I
144 want RPC-level or higher (CORBA?) interfaces and (possibly
145 through RPC or CORBA) GUI support
146 =======================================================================
147 important but out of scope (for WHN, anyway: Patches from other people
148 are still welcome!) until after 1.0:
149 * DYNAMIC-EXTENT
150 * sadly deteriorated support for ANSI-style block compilation
151 (static linking of DEFUNs within a single file or
152 WITH-COMPILATION-UNIT)
153 * various GC issues (exuberant cut-and-paste coding,
154 possibly dangerously over-conservative handling
155 of neighbors of function objects, general GC efficiency)
156 * package issues other than SB!TYPE, SB!MOP, and dead exported
157 symbols
158 * Any systematic effort to fix compiler consistency checks is
159 out of scope. (However, it still might be possible to
160 determine that some or all of them are hopelessly stale
161 and delete them.)
162 ===============================================================================
163 other known issues with no particular target date:
a530bbe Initial revision
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164
4eb1a6d 0.pre7.74:
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165 bugs listed on the man page
a530bbe Initial revision
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166
167 hundreds of FIXME notes in the sources from WHN
168
169 various other unfinished business from CMU CL and before, marked with
170 "XX" or "XXX" or "###" or "***" or "???" or "pfw" or "@@@@" or "zzzzz"
171 or probably also other codes that I haven't noticed or have forgotten.
172
173 (Things marked as KLUDGE are in general things which are ugly or
174 confusing, but that, for whatever reason, may stay that way
175 indefinitely.)
4eb1a6d 0.pre7.74:
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176 =======================================================================
177 "There's nothing an agnostic can't do as long as he doesn't know
178 whether he believes in anything or not."
179 -- Monty Python.
180
181 "God grant me serenity to accept the code I cannot change, courage to
182 change the code I can, and wisdom to know the difference."
183 -- Erik Naggum
184
185 "Accumulation of half-understood design decisions eventually chokes a
186 program as a water weed chokes a canal. By refactoring you can ensure
187 that your full understanding of how the program should be designed is
188 always reflected in the program. As a water weed quickly spreads its
189 tendrils, partially understood design decisions quickly spread their
190 effects throughout your program. No one or two or even ten individual
191 actions will be enough to eradicate the problem."
192 -- Martin Fowler, in _Refactoring: Improving the Design of Existing
193 Code_, p. 360
194
195 "I wish I didn't know now what I didn't know then."
196 -- Bob Seger
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