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}
  72     {compute-effective-slot @<class> @<slot> @> @<effective-slot>}
  73 \end{describe}
  74
  75 \begin{describe}{cls}
  76     {sod-class-effective-slot (effective-slot) \\ \ind
  77       \&key :class :slot :initializer-function :prepare-function}
  78 \end{describe}
  79
  80 \begin{describe*}
  81     {\dhead{gf}{effective-slot-initializer-function @<slot> @> @<function>}
  82      \dhead{gf}{effective-slot-prepare-function @<slot> @> @<function>}}
  83 \end{describe*}
  84
  85 \begin{describe}{cls}{islots () \&key :class :subclass :slots}
  86 \end{describe}
  87
  88 \begin{describe*}
  89     {\dhead{gf}{islots-class @<islots> @> @<class>}
  90      \dhead{gf}{islots-subclass @<islots> @> @<class>}
  91      \dhead{gf}{islots-slots @<islots> @> @<list>}}
  92 \end{describe*}
  93
  94 \begin{describe}{gf}{compute-islots @<class> @<subclass> @> @<islots>}
  95 \end{describe}
  96
  97 \begin{describe}{gf}{vtable-pointer () \&key :class :chain-head :chain-tail}
  98 \end{describe}
  99
 100 \begin{describe*}
 101     {\dhead{gf}{vtable-pointer-class @<vtable-pointer> @> @<class>}
 102      \dhead{gf}{vtable-pointer-chain-head @<vtable-pointer> @> @<class>}
 103      \dhead{gf}{vtable-pointer-chain-tail @<vtable-pointer> @> @<class>}}
 104 \end{describe*}
 105
 106 \begin{describe}{gf}{ichain () \&key :class :chain-head :chain-tail :body}
 107 \end{describe}
 108
 109 \begin{describe*}
 110     {\dhead{gf}{ichain-class @<ichain> @> @<class>}
 111      \dhead{gf}{ichain-chain-head @<ichain> @> @<class>}
 112      \dhead{gf}{ichain-chain-tail @<ichain> @> @<class>}
 113      \dhead{gf}{ichain-body @<ichain> @> @<list>}}
 114 \end{describe*}
 115
 116 \begin{describe}{gf}{compute-ichain @<class> @<chain> @> @<ichain>}
 117 \end{describe}
 118
 119 \begin{describe}{gf}{ilayout () \&key :class :ichains}
 120 \end{describe}
 121
 122 \begin{describe*}
 123     {\dhead{gf}{ilayout-class @<ilayout> @> @<class>}
 124      \dhead{gf}{ilayout-ichains @<ilayout> @> @<list>}}
 125 \end{describe*}
 126
 127 \begin{describe}{gf}{sod-class-ilayout <class> @> @<ilayout>}
 128 \end{describe}
 129
 130 \begin{describe}{gf}{compute-ilayout @<class> @> @<ilayout>}
 131 \end{describe}
 132
 133 \begin{describe}{cls}
 134     {vtmsgs () \&key :class :subclass :chain-head :chain-tail :entries}
 135 \end{describe}
 136
 137 \begin{describe*}
 138     {\dhead{gf}{vtmsgs-class @<vtmsgs> @> @<class>}
 139      \dhead{gf}{vtmsgs-subclass @<vtmsgs> @> @<class>}
 140      \dhead{gf}{vtmsgs-chain-head @<vtmsgs> @> @<class>}
 141      \dhead{gf}{vtmsgs-chain-tail @<vtmsgs> @> @<class>}
 142      \dhead{gf}{vtmsgs-entries @<vtmsgs> @> @<list>}}
 143 \end{describe*}
 144
 145 \begin{describe}{cls}
 146     {class-pointer () \&key :class :chain-head :metaclass :meta-chain-head}
 147 \end{describe}
 148
 149 \begin{describe*}
 150     {\dhead{gf}{class-pointer-class @<class-pointer> @> @<class>}
 151      \dhead{gf}{class-pointer-chain-head @<class-pointer> @> @<class>}
 152      \dhead{gf}{class-pointer-metaclass @<class-pointer> @> @<class>}
 153      \dhead{gf}{class-pointer-meta-chain-head @<class-pointer> @> @<class>}}
 154 \end{describe*}
 155
 156 \begin{describe}{fun}
 157     {make-class-pointer @<class> @<chain-head>
 158                         @<metaclass> @<meta-chain-head>
 159       @> @<class-pointer>}
 160 \end{describe}
 161
 162 \begin{describe}{cls}{base-offset () \&key :class :chain-head}
 163 \end{describe}
 164
 165 \begin{describe*}
 166     {\dhead{gf}{base-offset-class @<base-offset> @> @<class>}
 167      \dhead{gf}{base-offset-chain-head @<base-offset> @> @<class>}}
 168 \end{describe*}
 169
 170 \begin{describe}{fun}
 171     {make-base-offset @<class> @<chain-head> @> @<base-offset>}
 172 \end{describe}
 173
 174 \begin{describe}{cls}{chain-offset () \&key :class :chain-head :target-head}
 175 \end{describe}
 176
 177 \begin{describe*}
 178     {\dhead{gf}{chain-offset-class @<chain-offset> @> @<class>}
 179      \dhead{gf}{chain-offset-chain-head @<chain-offset> @> @<class>}
 180      \dhead{gf}{chain-offset-target-head @<chain-offset> @> @<class>}}
 181 \end{describe*}
 182
 183 \begin{describe}{fun}
 184     {make-chain-offset @<class> @<chain-head> @<target-head>
 185       @> @<chain-offset>}
 186 \end{describe}
 187
 188 \begin{describe}{gf}{vtable () \&key :class :chain-head :chain-tail :body}
 189 \end{describe}
 190
 191 \begin{describe*}
 192     {\dhead{gf}{vtable-class @<vtable> @> @<class>}
 193      \dhead{gf}{vtable-chain-head @<vtable> @> @<class>}
 194      \dhead{gf}{vtable-chain-tail @<vtable> @> @<class>}
 195      \dhead{gf}{vtable-body @<vtable> @> @<list>}}
 196 \end{describe*}
 197
 198 \begin{describe}{gf}
 199     {compute-vtable-items @<class> @<super>
 200                           @<chain-head> @<chain-tail>
 201                           @<emit-function>}
 202 \end{describe}
 203
 204 \begin{describe}{gf}{compute-vtable @<class> @<chain> @> @<vtable>}
 205 \end{describe}
 206
 207 \begin{describe}{gf}{sod-class-vtables @<class> @> @<list>}
 208 \end{describe}
 209
 210 \begin{describe}{gf}{compute-vtables @<class> @> @<list>}
 211 \end{describe}
 212
 213 %%%--------------------------------------------------------------------------
 214 \section{Method combination} \label{sec:layout.methods}
 215
 216 \begin{describe}{cls}{effective-method () \&key :message :class :keywords}
 217 \end{describe}
 218
 219 \begin{describe*}
 220     {\dhead{gf}{effective-method-message @<method> @> @<message>}
 221      \dhead{gf}{effective-method-class @<method> @> @<class>}
 222      \dhead{gf}{effective-method-keywords @<method> @> @<list>}}
 223 \end{describe*}
 224
 225 \begin{describe}{gf}
 226     {sod-message-effective-method-class @<message> @> @<class>}
 227 \end{describe}
 228
 229 \begin{describe}{gf}{primary-method-class @<message> @> @<class>}
 230 \end{describe}
 231
 232 \begin{describe}{gf}
 233     {method-keyword-argument-lists @<method> @<direct-methods> @> @<list>}
 234 \end{describe}
 235
 236 \begin{describe}{gf}
 237     {compute-sod-effective-method @<message> @<class> @> @<method>}
 238 \end{describe}
 239
 240 \begin{describe}{gf}{sod-class-effective-methods @<class> @> @<list>}
 241 \end{describe}
 242
 243 \begin{describe}{gf}{compute-effective-methods @<class> @> @<list>}
 244 \end{describe}
 245
 246 \begin{describe}{cls}
 247     {method-entry () \&key :method :chain-head :chain-tail :role}
 248 \end{describe}
 249
 250 \begin{describe*}
 251     {\dhead{gf}{method-entry-effective-method @<method-entry> @> @<method>}
 252      \dhead{gf}{method-entry-chain-head @<method-entry> @> @<class>}
 253      \dhead{gf}{method-entry-chain-tail @<method-entry> @> @<class>}
 254      \dhead{gf}{method-entry-role @<method-entry> @> @<role>}}
 255 \end{describe*}
 256
 257 \begin{describe}{gf}
 258     {make-method-entries @<effective-method> @<chain-head> @<chain-tail>
 259       @> @<list>}
 260 \end{describe}
 261
 262
 263 \begin{describe}{gf}{sod-message-argument-tail @<message> @> @<list>}
 264 \end{describe}
 265
 266 \begin{describe}{gf}{sod-method-function-type @<method> @> @<c-type>}
 267 \end{describe}
 268
 269 \begin{describe}{gf}{sod-method-next-method-type @<method> @> @<c-type>}
 270 \end{describe}
 271
 272 \begin{describe}{gf}{sod-method-function-name @<method> @> @<string>}
 273 \end{describe}
 274
 275 \begin{describe}{fun}{varargs-message-p @<message> @> @<generalized-boolean>}
 276 \end{describe}
 277
 278 \begin{describe}{fun}{keyword-message-p @<message> @> @<generalized-boolean>}
 279 \end{describe}
 280
 281 \begin{describe}{gf}{method-entry-function-type @<entry> @> @<c-type>}
 282 \end{describe}
 283
 284 \begin{describe}{gf}{method-entry-slot-name @<entry> @> @<string>}
 285 \end{describe}
 286
 287 \begin{describe}{gf}
 288     {method-entry-slot-name-by-role @<entry> @<role> @<name> @> @<string>}
 289 \end{describe}
 290
 291 \begin{describe}{gf}
 292     {effective-method-basic-argument-names @<method> @> @<list>}
 293 \end{describe}
 294
 295 \begin{describe}{gf}
 296     {effective-method-live-p @<method> @> @<generalized-boolean>}
 297 \end{describe}
 298
 299
 300 \begin{describe}{cls}
 301     {method-codegen (codegen) \\ \ind
 302       \&key :vars :insts :temp-index
 303             :message :class :method :target}
 304 \end{describe}
 305
 306 \begin{describe*}
 307     {\dhead{gf}{codegen-message @<codegen> @> @<message>}
 308      \dhead{gf}{codegen-class @<codegen> @> @<class>}
 309      \dhead{gf}{codegen-method @<codegen> @> @<method>}
 310      \dhead{gf}{codegen-target @<codegen> @> @<target>}}
 311 \end{describe*}
 312
 313 \begin{describe*}
 314     {\dhead{cls}{convert-to-ilayout-inst (inst)}
 315      \dhead{fun}
 316        {make-convert-to-ilayout-inst @<class> @<chain-head> @<expr>}}
 317   \begin{prog}
 318     SOD_ILAYOUT(@<class>, @<chain-head-nick>, @<expr>)
 319   \end{prog}
 320 \end{describe*}
 321
 322
 323 \begin{describe}{gf}
 324     {compute-effective-method-body @<method> @<codegen> @<target>}
 325 \end{describe}
 326
 327 \begin{describe}{gf}{simple-method-body @<method> @<codegen> @<target>}
 328 \end{describe}
 329
 330 \begin{describe}{fun}
 331     {invoke-method @<codegen> @<target> @<arguments-tail> @<direct-method>}
 332 \end{describe}
 333
 334 \begin{describe}{fun}{ensure-ilayout-var @<codegen> @<super>}
 335 \end{describe}
 336
 337 \begin{describe}{fun}{make-trampoline @<codegen> @<super> @<body-func>}
 338 \end{describe}
 339
 340 \begin{describe}{gf}{effective-method-function-name @<method> @> @<string>}
 341 \end{describe}
 342
 343 \begin{describe}{gf}
 344     {method-entry-function-name @<method> @<chain-head> @<role> @> @<string>}
 345 \end{describe}
 346
 347 \begin{describe}{gf}{compute-method-entry-functions @<method> @> @<list>}
 348 \end{describe}
 349
 350 \begin{describe}{fun}
 351     {invoke-delegation-chain @<codegen> @<target> @<basic-tail>
 352                              @<chain> @<kernel-func>}
 353 \end{describe}
 354
 355 \begin{describe}{cls}
 356     {basic-message (sod-message) \&key :name :location :class :type}
 357 \end{describe}
 358
 359 \begin{describe}{cls}
 360     {simple-message (basic-message) \&key :name :location :class :type}
 361 \end{describe}
 362
 363 \begin{describe}{cls}
 364     {basic-direct-method (sod-method)
 365       \&key :message :location :class :type :body :role}
 366 \end{describe}
 367
 368 \begin{describe}{gf}{sod-method-role @<method> @> @<role>}
 369 \end{describe}
 370
 371 \begin{describe}{cls}
 372     {daemon-direct-method (basic-direct-method) \\ \ind
 373       \&key :message :location :class :type :body :role}
 374 \end{describe}
 375
 376 \begin{describe}{cls}
 377     {delegating-direct-method (basic-direct-method) \\ \ind
 378       \&key :message :location :class :type :body :role}
 379 \end{describe}
 380
 381 \begin{describe}{cls}
 382     {basic-effective-method (effective-method) \\ \ind
 383       \&key :message :class :around-methods :before-methods :after-methods}
 384 \end{describe}
 385
 386 \begin{describe*}
 387     {\dhead{gf}
 388        {effective-method-around-methods @<effective-method> @> @<list>}
 389      \dhead{gf}
 390        {effective-method-before-methods @<effective-method> @> @<list>}
 391      \dhead{gf}
 392        {effective-method-after-methods @<effective-method> @> @<list>}
 393      \dhead{gf}{effective-method-functions @<effective-method> @> @<list>}}
 394 \end{describe*}
 395
 396 \begin{describe}{cls}
 397     {simple-effective-method (basic-effective-method) \\ \ind
 398       \&key :message :class
 399             :around-methods :before-methods :after-methods :primary-methods}
 400 \end{describe}
 401
 402 \begin{describe}{fun}
 403     {basic-effective-method-body @<codegen> @<target> @<method> @<body>}
 404 \end{describe}
 405
 406 \begin{describe}{cls}
 407     {standard-message (simple-message) \&key :name :location :class :type}
 408 \end{describe}
 409
 410 \begin{describe}{cls}
 411     {standard-effective-method (simple-effective-method) \\ \ind
 412       \&key :message :class
 413             :around-methods :before-methods :after-methods :primary-methods}
 414 \end{describe}
 415
 416 \begin{describe}{cls}
 417     {aggregating-message (simple-message)
 418       \&key :name :location :class :type :combination}
 419 \end{describe}
 420
 421 \begin{describe}{gf}
 422     {aggregating-message-properties @<message> @<combination> @> @<plist>}
 423 \end{describe}
 424
 425 \begin{describe}{gf}
 426     {compute-aggregating-message-kernel
 427       \=@<message> @<combination> @<target> \+ \\
 428         @<methods> @<arg-names> \&key}
 429 \end{describe}
 430
 431 \begin{describe}{gf}
 432     {check-aggregating-message-type @<message> @<combination> @<c-type>}
 433 \end{describe}
 434
 435 \begin{describe}{cls}
 436      {aggregating-effective-method (simple-effective-method) \\ \ind
 437       \&key :message :class
 438             :around-methods :before-methods :after-methods :primary-methods}
 439 \end{describe}
 440
 441 \begin{describe}{mac}
 442     {define-aggregating-method-combination @<combination> \\ \ind\ind
 443         ((@<var-name>^*)
 444          @[[ :codegen @<codegen-var> @!
 445              :methods @<methods-var> @]]) \- \\
 446       @[[ \=:properties (@{ (@{ @<name> @! (@[@<keyword>@] @<name>) @}
 447                              @<c-type>
 448                              @[@<default>
 449                                @[@<suppliedp-var>@]@]) @}^*) @! \+ \\
 450             :return-type @<c-type> @! \\
 451             :around @<around-func> @!
 452             :first-method @<first-method-func> @!
 453             :method @<method-func> @]]}
 454 \end{describe}
 455
 456 %%% the method combination story
 457 %% compute-effective-methods --> compute-sod-effective-method
 458
 459 %% hook-output (basic-effective-method :c)
 460 %%   basic-effective-method.functions
 461 %%     compute-method-entry-functions
 462 %%       compute-effective-method-body
 463 %%
 464 %% compute-effective-method-body (simple-effective-method)
 465 %%   basic-effective-method-body
 466 %%   simple-method-body (standard-effective-method)
 467 %%   simple-method-body (aggregating-effective-method)
 468 %%     message-kernel-function
 469
 470 %%%----- That's all, folks --------------------------------------------------
 471
 472 %%% Local variables:
 473 %%% mode: LaTeX
 474 %%% TeX-master: "sod.tex"
 475 %%% TeX-PDF-mode: t
 476 %%% End: