mdw@git.distorted.org.uk Git - sod/blob - doc/layout.tex

   1 %%% -*-latex-*-
   2 %%%
   3 %%% Class layout and method combination protocols
   4 %%%
   5 %%% (c) 2015 Straylight/Edgeware
   6 %%%
   7
   8 %%%----- Licensing notice ---------------------------------------------------
   9 %%%
  10 %%% This file is part of the Sensible Object Design, an object system for C.
  11 %%%
  12 %%% SOD is free software; you can redistribute it and/or modify
  13 %%% it under the terms of the GNU General Public License as published by
  14 %%% the Free Software Foundation; either version 2 of the License, or
  15 %%% (at your option) any later version.
  16 %%%
  17 %%% SOD is distributed in the hope that it will be useful,
  18 %%% but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 %%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 %%% GNU General Public License for more details.
  21 %%%
  22 %%% You should have received a copy of the GNU General Public License
  23 %%% along with SOD; if not, write to the Free Software Foundation,
  24 %%% Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25
  26 \chapter{Class layout and method combination}
  27
  28 %%%--------------------------------------------------------------------------
  29 \section{Class layout protocol} \label{sec:layout.instance}
  30
  31 \begin{describe}{fun}{islots-struct-tag @<class> @> @<string>}
  32 \end{describe}
  33
  34 \begin{describe}{fun}{ichain-struct-tag @<class> @<chain-head> @> @<string>}
  35 \end{describe}
  36
  37 \begin{describe}{fun}{ichain-union-tag @<class> @<chain-head> @> @<string>}
  38 \end{describe}
  39
  40 \begin{describe}{fun}{ilayout-struct-tag @<class> @> @<string>}
  41 \end{describe}
  42
  43 \begin{describe}{fun}{vtmsgs-struct-tag @<class> @<super> @> @<string>}
  44 \end{describe}
  45
  46 \begin{describe}{fun}{vtable-union-tag @<class> @<chain-head> @> @<string>}
  47 \end{describe}
  48
  49 \begin{describe}{fun}{vtable-struct-tag @<class> @<chain-head> @> @<string>}
  50 \end{describe}
  51
  52 \begin{describe}{fun}{vtable-name @<class> @<chain-head> @> @<string>}
  53 \end{describe}
  54
  55 \begin{describe}{fun}{message-macro-name @<class> @<entry> @> @<string>}
  56 \end{describe}
  57
  58 \begin{describe}{cls}{effective-slot () \&key :class :slot :initializer}
  59 \end{describe}
  60
  61 \begin{describe*}
  62     {\dhead{gf}{effective-slot-class @<slot> @> @<class>}
  63      \dhead{gf}{effective-slot-direct-slot @<slot> @> @<direct-slot>}
  64      \dhead{gf}{effective-slot-initializer @<slot> @> @<init-or-nil>}}
  65 \end{describe*}
  66
  67 \begin{describe}{gf}
  68     {find-slot-initializer @<class> @<slot> @> @<init-or-nil>}
  69 \end{describe}
  70
  71 \begin{describe}{gf}{find-slot-initargs @<class> @<slot> @> @<list>}
  72 \end{describe}
  73
  74 \begin{describe}{gf}
  75     {compute-effective-slot @<class> @<slot> @> @<effective-slot>}
  76 \end{describe}
  77
  78 \begin{describe}{cls}
  79     {sod-class-effective-slot (effective-slot) \\ \ind
  80       \&key :class :slot :initializer-function :prepare-function}
  81 \end{describe}
  82
  83 \begin{describe*}
  84     {\dhead{gf}{effective-slot-initializer-function @<slot> @> @<function>}
  85      \dhead{gf}{effective-slot-prepare-function @<slot> @> @<function>}}
  86 \end{describe*}
  87
  88 \begin{describe}{cls}{islots () \&key :class :subclass :slots}
  89 \end{describe}
  90
  91 \begin{describe*}
  92     {\dhead{gf}{islots-class @<islots> @> @<class>}
  93      \dhead{gf}{islots-subclass @<islots> @> @<class>}
  94      \dhead{gf}{islots-slots @<islots> @> @<list>}}
  95 \end{describe*}
  96
  97 \begin{describe}{gf}{compute-islots @<class> @<subclass> @> @<islots>}
  98 \end{describe}
  99
 100 \begin{describe}{gf}{vtable-pointer () \&key :class :chain-head :chain-tail}
 101 \end{describe}
 102
 103 \begin{describe*}
 104     {\dhead{gf}{vtable-pointer-class @<vtable-pointer> @> @<class>}
 105      \dhead{gf}{vtable-pointer-chain-head @<vtable-pointer> @> @<class>}
 106      \dhead{gf}{vtable-pointer-chain-tail @<vtable-pointer> @> @<class>}}
 107 \end{describe*}
 108
 109 \begin{describe}{gf}{ichain () \&key :class :chain-head :chain-tail :body}
 110 \end{describe}
 111
 112 \begin{describe*}
 113     {\dhead{gf}{ichain-class @<ichain> @> @<class>}
 114      \dhead{gf}{ichain-chain-head @<ichain> @> @<class>}
 115      \dhead{gf}{ichain-chain-tail @<ichain> @> @<class>}
 116      \dhead{gf}{ichain-body @<ichain> @> @<list>}}
 117 \end{describe*}
 118
 119 \begin{describe}{gf}{compute-ichain @<class> @<chain> @> @<ichain>}
 120 \end{describe}
 121
 122 \begin{describe}{gf}{ilayout () \&key :class :ichains}
 123 \end{describe}
 124
 125 \begin{describe*}
 126     {\dhead{gf}{ilayout-class @<ilayout> @> @<class>}
 127      \dhead{gf}{ilayout-ichains @<ilayout> @> @<list>}}
 128 \end{describe*}
 129
 130 \begin{describe}{gf}{sod-class-ilayout <class> @> @<ilayout>}
 131 \end{describe}
 132
 133 \begin{describe}{gf}{compute-ilayout @<class> @> @<ilayout>}
 134 \end{describe}
 135
 136 \begin{describe}{cls}
 137     {vtmsgs () \&key :class :subclass :chain-head :chain-tail :entries}
 138 \end{describe}
 139
 140 \begin{describe*}
 141     {\dhead{gf}{vtmsgs-class @<vtmsgs> @> @<class>}
 142      \dhead{gf}{vtmsgs-subclass @<vtmsgs> @> @<class>}
 143      \dhead{gf}{vtmsgs-chain-head @<vtmsgs> @> @<class>}
 144      \dhead{gf}{vtmsgs-chain-tail @<vtmsgs> @> @<class>}
 145      \dhead{gf}{vtmsgs-entries @<vtmsgs> @> @<list>}}
 146 \end{describe*}
 147
 148 \begin{describe}{cls}
 149     {class-pointer () \&key :class :chain-head :metaclass :meta-chain-head}
 150 \end{describe}
 151
 152 \begin{describe*}
 153     {\dhead{gf}{class-pointer-class @<class-pointer> @> @<class>}
 154      \dhead{gf}{class-pointer-chain-head @<class-pointer> @> @<class>}
 155      \dhead{gf}{class-pointer-metaclass @<class-pointer> @> @<class>}
 156      \dhead{gf}{class-pointer-meta-chain-head @<class-pointer> @> @<class>}}
 157 \end{describe*}
 158
 159 \begin{describe}{fun}
 160     {make-class-pointer @<class> @<chain-head>
 161                         @<metaclass> @<meta-chain-head>
 162       @> @<class-pointer>}
 163 \end{describe}
 164
 165 \begin{describe}{cls}{base-offset () \&key :class :chain-head}
 166 \end{describe}
 167
 168 \begin{describe*}
 169     {\dhead{gf}{base-offset-class @<base-offset> @> @<class>}
 170      \dhead{gf}{base-offset-chain-head @<base-offset> @> @<class>}}
 171 \end{describe*}
 172
 173 \begin{describe}{fun}
 174     {make-base-offset @<class> @<chain-head> @> @<base-offset>}
 175 \end{describe}
 176
 177 \begin{describe}{cls}{chain-offset () \&key :class :chain-head :target-head}
 178 \end{describe}
 179
 180 \begin{describe*}
 181     {\dhead{gf}{chain-offset-class @<chain-offset> @> @<class>}
 182      \dhead{gf}{chain-offset-chain-head @<chain-offset> @> @<class>}
 183      \dhead{gf}{chain-offset-target-head @<chain-offset> @> @<class>}}
 184 \end{describe*}
 185
 186 \begin{describe}{fun}
 187     {make-chain-offset @<class> @<chain-head> @<target-head>
 188       @> @<chain-offset>}
 189 \end{describe}
 190
 191 \begin{describe}{gf}{vtable () \&key :class :chain-head :chain-tail :body}
 192 \end{describe}
 193
 194 \begin{describe*}
 195     {\dhead{gf}{vtable-class @<vtable> @> @<class>}
 196      \dhead{gf}{vtable-chain-head @<vtable> @> @<class>}
 197      \dhead{gf}{vtable-chain-tail @<vtable> @> @<class>}
 198      \dhead{gf}{vtable-body @<vtable> @> @<list>}}
 199 \end{describe*}
 200
 201 \begin{describe}{gf}
 202     {compute-vtable-items @<class> @<super>
 203                           @<chain-head> @<chain-tail>
 204                           @<emit-function>}
 205 \end{describe}
 206
 207 \begin{describe}{gf}{compute-vtable @<class> @<chain> @> @<vtable>}
 208 \end{describe}
 209
 210 \begin{describe}{gf}{sod-class-vtables @<class> @> @<list>}
 211 \end{describe}
 212
 213 \begin{describe}{gf}{compute-vtables @<class> @> @<list>}
 214 \end{describe}
 215
 216 %%%--------------------------------------------------------------------------
 217 \section{Method combination} \label{sec:layout.methods}
 218
 219 \begin{describe}{cls}{effective-method () \&key :message :class :keywords}
 220 \end{describe}
 221
 222 \begin{describe*}
 223     {\dhead{gf}{effective-method-message @<method> @> @<message>}
 224      \dhead{gf}{effective-method-class @<method> @> @<class>}
 225      \dhead{gf}{effective-method-keywords @<method> @> @<list>}}
 226 \end{describe*}
 227
 228 \begin{describe}{gf}
 229     {sod-message-effective-method-class @<message> @> @<class>}
 230 \end{describe}
 231
 232 \begin{describe}{gf}{primary-method-class @<message> @> @<class>}
 233 \end{describe}
 234
 235 \begin{describe}{gf}
 236     {method-keyword-argument-lists @<method> @<direct-methods> @> @<list>}
 237 \end{describe}
 238
 239 \begin{describe}{gf}
 240     {compute-sod-effective-method @<message> @<class> @> @<method>}
 241 \end{describe}
 242
 243 \begin{describe}{gf}{sod-class-effective-methods @<class> @> @<list>}
 244 \end{describe}
 245
 246 \begin{describe}{gf}{compute-effective-methods @<class> @> @<list>}
 247 \end{describe}
 248
 249 \begin{describe}{cls}
 250     {method-entry () \&key :method :chain-head :chain-tail :role}
 251 \end{describe}
 252
 253 \begin{describe*}
 254     {\dhead{gf}{method-entry-effective-method @<method-entry> @> @<method>}
 255      \dhead{gf}{method-entry-chain-head @<method-entry> @> @<class>}
 256      \dhead{gf}{method-entry-chain-tail @<method-entry> @> @<class>}
 257      \dhead{gf}{method-entry-role @<method-entry> @> @<role>}}
 258 \end{describe*}
 259
 260 \begin{describe}{gf}
 261     {make-method-entries @<effective-method> @<chain-head> @<chain-tail>
 262       @> @<list>}
 263 \end{describe}
 264
 265
 266 \begin{describe}{gf}{sod-message-argument-tail @<message> @> @<list>}
 267 \end{describe}
 268
 269 \begin{describe}{gf}{sod-method-function-type @<method> @> @<c-type>}
 270 \end{describe}
 271
 272 \begin{describe}{gf}{sod-method-next-method-type @<method> @> @<c-type>}
 273 \end{describe}
 274
 275 \begin{describe}{gf}{sod-method-description @<method> @> @<string>}
 276 \end{describe}
 277
 278 \begin{describe}{gf}{sod-method-function-name @<method> @> @<string>}
 279 \end{describe}
 280
 281 \begin{describe}{fun}{varargs-message-p @<message> @> @<generalized-boolean>}
 282 \end{describe}
 283
 284 \begin{describe}{fun}{keyword-message-p @<message> @> @<generalized-boolean>}
 285 \end{describe}
 286
 287 \begin{describe}{gf}{method-entry-function-type @<entry> @> @<c-type>}
 288 \end{describe}
 289
 290 \begin{describe}{gf}{method-entry-slot-name @<entry> @> @<string>}
 291 \end{describe}
 292
 293 \begin{describe}{gf}
 294     {method-entry-slot-name-by-role @<entry> @<role> @<name> @> @<string>}
 295 \end{describe}
 296
 297 \begin{describe}{gf}
 298     {effective-method-basic-argument-names @<method> @> @<list>}
 299 \end{describe}
 300
 301 \begin{describe}{gf}
 302     {effective-method-live-p @<method> @> @<generalized-boolean>}
 303 \end{describe}
 304
 305
 306 \begin{describe}{cls}
 307     {method-codegen (codegen)                                   \\ \ind
 308       \&key :vars :insts :temp-index
 309             :message :class :method :target}
 310 \end{describe}
 311
 312 \begin{describe*}
 313     {\dhead{gf}{codegen-message @<codegen> @> @<message>}
 314      \dhead{gf}{codegen-class @<codegen> @> @<class>}
 315      \dhead{gf}{codegen-method @<codegen> @> @<method>}
 316      \dhead{gf}{codegen-target @<codegen> @> @<target>}}
 317 \end{describe*}
 318
 319 \begin{describe*}
 320     {\dhead{cls}{convert-to-ilayout-inst (inst)}
 321      \dhead{fun}
 322        {make-convert-to-ilayout-inst @<class> @<chain-head> @<expr>}}
 323   \begin{prog}
 324     SOD_ILAYOUT(@<class>, @<chain-head-nick>, @<expr>)
 325   \end{prog}
 326 \end{describe*}
 327
 328
 329 \begin{describe}{gf}
 330     {compute-effective-method-body @<method> @<codegen> @<target>}
 331 \end{describe}
 332
 333 \begin{describe}{gf}{simple-method-body @<method> @<codegen> @<target>}
 334 \end{describe}
 335
 336 \begin{describe}{fun}
 337     {invoke-method @<codegen> @<target> @<arguments-tail> @<direct-method>}
 338 \end{describe}
 339
 340 \begin{describe}{fun}{ensure-ilayout-var @<codegen> @<super>}
 341 \end{describe}
 342
 343 \begin{describe}{fun}{make-trampoline @<codegen> @<super> @<body-func>}
 344 \end{describe}
 345
 346 \begin{describe}{gf}{effective-method-function-name @<method> @> @<string>}
 347 \end{describe}
 348
 349 \begin{describe}{gf}
 350     {method-entry-function-name @<method> @<chain-head> @<role> @> @<string>}
 351 \end{describe}
 352
 353 \begin{describe}{gf}{compute-method-entry-functions @<method> @> @<list>}
 354 \end{describe}
 355
 356 \begin{describe}{fun}
 357     {invoke-delegation-chain @<codegen> @<target> @<basic-tail>
 358                              @<chain> @<kernel-func>}
 359 \end{describe}
 360
 361 \begin{describe}{cls}
 362     {basic-message (sod-message) \&key :name :location :class :type}
 363 \end{describe}
 364
 365 \begin{describe}{cls}
 366     {simple-message (basic-message) \&key :name :location :class :type}
 367 \end{describe}
 368
 369 \begin{describe}{cls}
 370     {basic-direct-method (sod-method)
 371       \&key :message :location :class :type :body :role}
 372 \end{describe}
 373
 374 \begin{describe}{gf}{sod-method-role @<method> @> @<role>}
 375 \end{describe}
 376
 377 \begin{describe}{cls}
 378     {daemon-direct-method (basic-direct-method)                 \\ \ind
 379       \&key :message :location :class :type :body :role}
 380 \end{describe}
 381
 382 \begin{describe}{cls}
 383     {delegating-direct-method (basic-direct-method)             \\ \ind
 384       \&key :message :location :class :type :body :role}
 385 \end{describe}
 386
 387 \begin{describe}{cls}
 388     {basic-effective-method (effective-method)                  \\ \ind
 389       \&key :message :class :around-methods :before-methods :after-methods}
 390 \end{describe}
 391
 392 \begin{describe*}
 393     {\dhead{gf}
 394        {effective-method-around-methods @<effective-method> @> @<list>}
 395      \dhead{gf}
 396        {effective-method-before-methods @<effective-method> @> @<list>}
 397      \dhead{gf}
 398        {effective-method-after-methods @<effective-method> @> @<list>}
 399      \dhead{gf}{effective-method-functions @<effective-method> @> @<list>}}
 400 \end{describe*}
 401
 402 \begin{describe}{cls}
 403     {simple-effective-method (basic-effective-method)           \\ \ind
 404       \&key :message :class
 405             :around-methods :before-methods :after-methods :primary-methods}
 406 \end{describe}
 407
 408 \begin{describe}{fun}
 409     {basic-effective-method-body @<codegen> @<target> @<method> @<body>}
 410 \end{describe}
 411
 412 \begin{describe}{cls}
 413     {standard-message (simple-message) \&key :name :location :class :type}
 414 \end{describe}
 415
 416 \begin{describe}{cls}
 417     {standard-effective-method (simple-effective-method)        \\ \ind
 418       \&key :message :class
 419             :around-methods :before-methods :after-methods :primary-methods}
 420 \end{describe}
 421
 422 \begin{describe}{cls}
 423     {aggregating-message (simple-message)
 424       \&key :name :location :class :type :combination}
 425 \end{describe}
 426
 427 \begin{describe}{gf}
 428     {aggregating-message-properties @<message> @<combination> @> @<plist>}
 429 \end{describe}
 430
 431 \begin{describe}{gf}
 432     {compute-aggregating-message-kernel
 433       \=@<message> @<combination> @<target>                   \+\\
 434         @<methods> @<arg-names> \&key}
 435 \end{describe}
 436
 437 \begin{describe}{gf}
 438     {check-aggregating-message-type @<message> @<combination> @<c-type>}
 439 \end{describe}
 440
 441 \begin{describe}{cls}
 442      {aggregating-effective-method (simple-effective-method)    \\ \ind
 443       \&key :message :class
 444             :around-methods :before-methods :after-methods :primary-methods}
 445 \end{describe}
 446
 447 \begin{describe}{mac}
 448     {define-aggregating-method-combination @<combination>       \\ \ind\ind
 449         ((@<var-name>^*)
 450          @[[ :codegen @<codegen-var> @!
 451              :methods @<methods-var> @]])                     \-\\
 452       @[[ \=:properties (@{ (@{ @<name> @! (@[@<keyword>@] @<name>) @}
 453                              @<c-type>
 454                              @[@<default>
 455                                @[@<suppliedp-var>@]@]) @}^*) @! \+\\
 456             :return-type @<c-type> @!                           \\
 457             :around @<around-func> @!
 458             :first-method @<first-method-func> @!
 459             :method @<method-func> @]]}
 460 \end{describe}
 461
 462 %%% the method combination story
 463 %% compute-effective-methods --> compute-sod-effective-method
 464
 465 %% hook-output (basic-effective-method :c)
 466 %%   basic-effective-method.functions
 467 %%     compute-method-entry-functions
 468 %%       compute-effective-method-body
 469 %%
 470 %% compute-effective-method-body (simple-effective-method)
 471 %%   basic-effective-method-body
 472 %%   simple-method-body (standard-effective-method)
 473 %%   simple-method-body (aggregating-effective-method)
 474 %%     message-kernel-function
 475
 476 %%%----- That's all, folks --------------------------------------------------
 477
 478 %%% Local variables:
 479 %%% mode: LaTeX
 480 %%% TeX-master: "sod.tex"
 481 %%% TeX-PDF-mode: t
 482 %%% End: