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This commit is contained in:
Koichi Nakamura 2021-01-01 18:54:42 +09:00
parent 6f788f699a
commit 9dc6433850
1 changed files with 9 additions and 49 deletions
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58
core.fs
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@ -498,21 +498,13 @@ alias-builtin xor ^
\ === Constants ===
\ Make small integer words to **compile** integer literals
\ since we don't have integer literals yet.
: 0 [ key 0 key 0 - ] literal
[compile] literal
; immediate
: f 0 ;
bye
: 0 lit lit , lit [ key 0 key 0 - , ] , ; immediate
: 1 lit lit , lit [ key 1 key 0 - , ] , ; immediate
: 2 lit lit , lit [ key 2 key 0 - , ] , ; immediate
: 3 lit lit , lit [ key 3 key 0 - , ] , ; immediate
\ Since we don't have integer literals yet,
\ define small integer words for convenience
\ and readability.
: 0 [ key 0 key 0 - ] literal ;
: 1 [ key 1 key 0 - ] literal ;
: 2 [ key 2 key 0 - ] literal ;
: 3 [ key 3 key 0 - ] literal ;
: true 1 ;
: false 0 ;
@ -565,40 +557,8 @@ bye
\ ( -- a-addr )
\ The bottom address of stacks.
\ sp@ and rp@ points bottom if implementation so far is correct.
: sp0 [ ' lit , sp@ cell+ , ] ;
: rp0 [ ' lit , rp@ , ] ;
\ === Compilers ===
\ compilation: ( "name" -- )
\ runtime: ( -- xt )
: [']
lit lit , word find >CFA ,
; immediate
\ compilation: ( n -- )
\ runtime: ( -- n)
: literal
['] lit ,
,
; immediate
\ compilation: ( "name" -- )
\ Compile word now even if it is immediate
: [compile]
' ,
; immediate
\ compilation: ( xt -- )
\ Compile word later
: (compile)
[compile] literal
;
: 'A' [ key A ] literal ;
'A' emit
: sp0 [ sp@ ] literal ;
: rp0 [ rp@ ] literal ;
bye