version 1.49, 2000/11/10 10:04:20
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version 1.50, 2000/11/12 14:09:45
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Line 430 end-struct type%
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Line 430 end-struct type%
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\ allocate a string |
\ allocate a string |
here swap dup allot move ; |
here swap dup allot move ; |
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: starts-with { addr u xt1 xt2 n stack -- } ( "prefix" -- ) |
wordlist constant prefixes |
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: declare ( addr "name" -- ) |
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\ remember that there is a stack item at addr called name |
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create , ; |
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: !default ( w addr -- ) |
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dup @ if |
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2drop \ leave nonzero alone |
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else |
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! |
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endif ; |
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: create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- ) |
\ describes a type |
\ describes a type |
\ addr u specifies the C type name |
\ addr u specifies the C type name |
\ stack effect entries of the type start with prefix |
\ stack effect entries of the type start with prefix |
Line 442 end-struct type%
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Line 455 end-struct type%
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stack r@ type-stack ! |
stack r@ type-stack ! |
rdrop ; |
rdrop ; |
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wordlist constant types |
: type-prefix ( addr u xt1 xt2 n stack "prefix" -- ) |
get-current |
create-type |
types set-current |
does> ( item -- ) |
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\ initialize item |
s" Bool" single-type starts-with f |
{ item typ } |
s" Char" single-type starts-with c |
typ item item-type ! |
s" Cell" single-type starts-with n |
typ type-stack @ item item-stack !default |
s" Cell" single-type starts-with w |
item item-name 2@ items @ search-wordlist 0= if \ new name |
s" UCell" single-type starts-with u |
item item-name 2@ 2dup nextname item declare |
s" DCell" double-type starts-with d |
typ type-c-name 2@ type space type ." ;" cr |
s" UDCell" double-type starts-with ud |
else |
s" Float" float-type starts-with r |
drop |
s" Cell *" single-type starts-with a_ |
endif ; |
s" Char *" single-type starts-with c_ |
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s" Float *" single-type starts-with f_ |
: execute-prefix ( item addr1 u1 -- ) |
s" DFloat *" single-type starts-with df_ |
\ execute the word ( item -- ) associated with the longest prefix |
s" SFloat *" single-type starts-with sf_ |
\ of addr1 u1 |
s" Xt" single-type starts-with xt |
0 swap ?do |
s" WID" single-type starts-with wid |
dup i prefixes search-wordlist |
s" struct F83Name *" single-type starts-with f83name |
if \ ok, we have the type ( item addr1 xt ) |
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nip execute |
set-current |
UNLOOP EXIT |
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endif |
: get-type ( addr1 u1 -- type-descr ) |
-1 s+loop |
\ get the type of the name in addr1 u1 |
\ we did not find a type, abort |
\ type-descr is a pointer to a type-descriptor |
true abort" unknown prefix" ; |
0 swap ?do |
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dup i types search-wordlist |
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if \ ok, we have the type ( addr1 xt ) |
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execute nip |
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UNLOOP EXIT |
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endif |
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-1 s+loop |
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\ we did not find a type, abort |
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true abort" unknown type prefix" ; |
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: declare ( addr "name" -- ) |
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\ remember that there is a stack item at addr called name |
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create , ; |
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: declaration ( item -- ) |
: declaration ( item -- ) |
dup item-name 2@ items @ search-wordlist |
dup item-name 2@ execute-prefix ; |
if \ already declared ( item xt ) |
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execute @ 2dup item-type @ swap item-type ! |
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item-stack @ swap item-stack ! \ !! does not generalize to stack prefixes |
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else ( addr ) |
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dup item-name 2@ nextname dup declare ( addr ) |
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dup >r item-name 2@ 2dup get-type ( addr1 u type-descr ) |
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dup type-stack @ r@ item-stack ! \ !! only if item-stack @ 0= |
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dup r> item-type ! ( addr1 u type-descr ) |
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type-c-name 2@ type space type ." ;" cr |
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endif ; |
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: declaration-list ( addr1 addr2 -- ) |
: declaration-list ( addr1 addr2 -- ) |
swap ?do |
swap ?do |
Line 505 set-current
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Line 495 set-current
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effect-in effect-in-end @ declaration-list |
effect-in effect-in-end @ declaration-list |
effect-out effect-out-end @ declaration-list ; |
effect-out effect-out-end @ declaration-list ; |
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get-current |
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prefixes set-current |
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s" Bool" single-type type-prefix f |
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s" Char" single-type type-prefix c |
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s" Cell" single-type type-prefix n |
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s" Cell" single-type type-prefix w |
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s" UCell" single-type type-prefix u |
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s" DCell" double-type type-prefix d |
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s" UDCell" double-type type-prefix ud |
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s" Float" float-type type-prefix r |
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s" Cell *" single-type type-prefix a_ |
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s" Char *" single-type type-prefix c_ |
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s" Float *" single-type type-prefix f_ |
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s" DFloat *" single-type type-prefix df_ |
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s" SFloat *" single-type type-prefix sf_ |
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s" Xt" single-type type-prefix xt |
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s" WID" single-type type-prefix wid |
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s" struct F83Name *" single-type type-prefix f83name |
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set-current |
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\ offset computation |
\ offset computation |
\ the leftmost (i.e. deepest) item has offset 0 |
\ the leftmost (i.e. deepest) item has offset 0 |
\ the rightmost item has the highest offset |
\ the rightmost item has the highest offset |