| \ allocate a string |
\ allocate a string |
| here swap dup allot move ; |
here swap dup allot move ; |
| |
|
| : starts-with { addr u xt1 xt2 n stack -- } ( "prefix" -- ) |
wordlist constant prefixes |
| |
|
| |
: declare ( addr "name" -- ) |
| |
\ remember that there is a stack item at addr called name |
| |
create , ; |
| |
|
| |
: !default ( w addr -- ) |
| |
dup @ if |
| |
2drop \ leave nonzero alone |
| |
else |
| |
! |
| |
endif ; |
| |
|
| |
: 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 |
| stack r@ type-stack ! |
stack r@ type-stack ! |
| rdrop ; |
rdrop ; |
| |
|
| wordlist constant types |
: type-prefix ( addr u xt1 xt2 n stack "prefix" -- ) |
| get-current |
create-type |
| types set-current |
does> ( item -- ) |
| |
\ 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_ |
|
| s" Float *" single-type starts-with f_ |
|
| s" DFloat *" single-type starts-with df_ |
|
| s" SFloat *" single-type starts-with sf_ |
|
| s" Xt" single-type starts-with xt |
|
| s" WID" single-type starts-with wid |
|
| s" struct F83Name *" single-type starts-with f83name |
|
| |
|
| set-current |
|
| |
|
| : get-type ( addr1 u1 -- type-descr ) |
: execute-prefix ( item addr1 u1 -- ) |
| \ get the type of the name in addr1 u1 |
\ execute the word ( item -- ) associated with the longest prefix |
| \ type-descr is a pointer to a type-descriptor |
\ of addr1 u1 |
| 0 swap ?do |
0 swap ?do |
| dup i types search-wordlist |
dup i prefixes search-wordlist |
| if \ ok, we have the type ( addr1 xt ) |
if \ ok, we have the type ( item addr1 xt ) |
| execute nip |
nip execute |
| UNLOOP EXIT |
UNLOOP EXIT |
| endif |
endif |
| -1 s+loop |
-1 s+loop |
| \ we did not find a type, abort |
\ we did not find a type, abort |
| true abort" unknown type prefix" ; |
true abort" unknown prefix" ; |
| |
|
| : declare ( addr "name" -- ) |
|
| \ remember that there is a stack item at addr called name |
|
| create , ; |
|
| |
|
| : declaration ( item -- ) |
: declaration ( item -- ) |
| dup item-name 2@ items @ search-wordlist |
dup item-name 2@ execute-prefix ; |
| if \ already declared ( item xt ) |
|
| execute @ 2dup item-type @ swap item-type ! |
|
| item-stack @ swap item-stack ! \ !! does not generalize to stack prefixes |
|
| else ( addr ) |
|
| dup item-name 2@ nextname dup declare ( addr ) |
|
| dup >r item-name 2@ 2dup get-type ( addr1 u type-descr ) |
|
| dup type-stack @ r@ item-stack ! \ !! only if item-stack @ 0= |
|
| dup r> item-type ! ( addr1 u type-descr ) |
|
| type-c-name 2@ type space type ." ;" cr |
|
| endif ; |
|
| |
|
| : declaration-list ( addr1 addr2 -- ) |
: declaration-list ( addr1 addr2 -- ) |
| swap ?do |
swap ?do |
| 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 ; |
| |
|
| |
get-current |
| |
prefixes set-current |
| |
|
| |
s" Bool" single-type type-prefix f |
| |
s" Char" single-type type-prefix c |
| |
s" Cell" single-type type-prefix n |
| |
s" Cell" single-type type-prefix w |
| |
s" UCell" single-type type-prefix u |
| |
s" DCell" double-type type-prefix d |
| |
s" UDCell" double-type type-prefix ud |
| |
s" Float" float-type type-prefix r |
| |
s" Cell *" single-type type-prefix a_ |
| |
s" Char *" single-type type-prefix c_ |
| |
s" Float *" single-type type-prefix f_ |
| |
s" DFloat *" single-type type-prefix df_ |
| |
s" SFloat *" single-type type-prefix sf_ |
| |
s" Xt" single-type type-prefix xt |
| |
s" WID" single-type type-prefix wid |
| |
s" struct F83Name *" single-type type-prefix f83name |
| |
|
| |
set-current |
| |
|
| \ 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 |
