94 lines
3.2 KiB
Factor
94 lines
3.2 KiB
Factor
! :folding=indent:collapseFolds=1:
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! $Id$
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!
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! Copyright (C) 2004 Slava Pestov.
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are met:
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!
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! 1. Redistributions of source code must retain the above copyright notice,
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! this list of conditions and the following disclaimer.
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!
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! 2. Redistributions in binary form must reproduce the above copyright notice,
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! this list of conditions and the following disclaimer in the documentation
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! and/or other materials provided with the distribution.
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!
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! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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IN: compiler
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USE: combinators
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USE: words
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USE: stack
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USE: kernel
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USE: math
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USE: lists
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USE: vectors
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: begin-jump-table ( -- start-fixup end-fixup )
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2 EAX R<<I
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EAX+/PARTIAL
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tail? [ 0 ] [ 0 PUSH-I compiled-offset 4 - ] ifte ;
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: compile-table-jump ( start-fixup -- end-fixup )
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#! Compile a piece of code that jumps to an offset in a
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#! jump table indexed by the type of the Factor object in
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#! EAX.
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#! The 32-bit address of the code after the jump table
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#! should be written to end-fixup.
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#! The jump table must immediately follow this macro.
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EAX JUMP-[R]
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cell compile-aligned
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compiled-offset swap set-compiled-cell ( update the ADD ) ;
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: jump-table-entry ( word -- )
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#! Jump table entries are absolute addresses.
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dup postpone-word
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compiled-offset 0 compile-cell 0 defer-xt ;
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: end-jump-table ( end-fixup -- )
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#! update the PUSH.
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dup 0 = [
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drop
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] [
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compiled-offset swap set-compiled-cell
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] ifte ;
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: (compile-jump-table) ( vtable -- )
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num-types [
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over ?vector-nth jump-table-entry
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] times* drop ;
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: compile-jump-table ( vtable -- )
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#! Compile a table of words as a word-array of XTs.
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begin-jump-table >r
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compile-table-jump
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(compile-jump-table)
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r> end-jump-table ;
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: compile-generic ( compile-time: vtable -- )
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#! Compile a faster alternative to
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#! : generic ( obj vtable -- )
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#! >r dup type r> vector-nth execute ;
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pop-literal commit-literals
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TYPE compile-jump-table ;
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: compile-2generic ( compile-time: vtable -- )
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#! Compile a faster alternative to
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#! : 2generic ( obj vtable -- )
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#! >r 2dup arithmetic-type r> vector-nth execute ;
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pop-literal commit-literals
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ARITHMETIC-TYPE compile-jump-table ;
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[ compile-generic ] \ generic "compiling" set-word-property
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[ compile-2generic ] \ 2generic "compiling" set-word-property
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