mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-28 10:52:33 +00:00
491 lines
7.7 KiB
Plaintext
491 lines
7.7 KiB
Plaintext
NEW
|
||
AUTO 3,1
|
||
.LIST OFF
|
||
*--------------------------------------
|
||
* Input:
|
||
* ZPInputBufPtr, Y,A = Expected type/qual
|
||
* Output:
|
||
* CS, A = EC
|
||
* CC, Y,A = type/qual, Value on Stack
|
||
*--------------------------------------
|
||
CSH.ExpEval ldx ZPPtr1
|
||
phx
|
||
ldx ZPPtr1+1 local : used by lookup
|
||
phx
|
||
|
||
ldx ZPPtr2 local : VarType
|
||
phx
|
||
ldx ZPPtr2+1 local : VarQual
|
||
phx
|
||
|
||
ldx ZPPtr3 local : BOP
|
||
phx
|
||
|
||
>STYA ZPPtr2 local : expected type/qual
|
||
|
||
lda #$ff no previous OP
|
||
pha
|
||
*--------------------------------------
|
||
.10 jsr CSH.GetCharNB
|
||
bcs .19
|
||
|
||
.11 cmp #'('
|
||
bne .20
|
||
|
||
jsr CSH.GetNextCharNB skip (
|
||
bcs .19
|
||
|
||
>LDYA ZPPtr2
|
||
jsr CSH.ExpEval
|
||
bcs .19
|
||
|
||
>STYA ZPPtr2 update type/qual
|
||
|
||
jsr CSH.GetCharNB
|
||
bcs .19
|
||
|
||
cmp #')'
|
||
bne .19
|
||
|
||
jsr CSH.GetNextCharNB skip )
|
||
bcc .31
|
||
|
||
.19 jmp .90
|
||
*--------------------------------------
|
||
.20 jsr CSH.IsLetter define, Fnc or Var ?
|
||
bcs .22
|
||
|
||
jsr CSH.GetDefine
|
||
bcc .10
|
||
|
||
jsr CSH.VarLookup
|
||
bcs .21
|
||
|
||
jsr CSH.GetValue Check type & Get value on stack
|
||
bcs .29
|
||
|
||
bra .30
|
||
|
||
.21 >LDYA ZPPtr2 var type/qual
|
||
jsr CSH.fCall X = function index
|
||
bcs .29
|
||
|
||
>STYA ZPPtr2 store real var type
|
||
bra .30
|
||
*--------------------------------------
|
||
.22 jsr CSH.IsDigit10 number ?
|
||
bcs .24
|
||
|
||
ldy ZPPtr2
|
||
bne .23
|
||
|
||
ldy #CSH.T.SINT
|
||
sty ZPPtr2
|
||
stz ZPPtr2+1
|
||
|
||
.23 jsr CSH.GetNumOnStack
|
||
bcs .29
|
||
|
||
bra .30
|
||
|
||
.24 cmp #'"' String literal
|
||
bne .90
|
||
|
||
jsr CSH.AddContCharP
|
||
.29 bcs .99
|
||
*--------------------------------------
|
||
.30 jsr CSH.GetCharNB
|
||
bcs .90
|
||
|
||
.31 cmp #';'
|
||
beq .80
|
||
|
||
cmp #','
|
||
beq .80
|
||
|
||
cmp #')'
|
||
beq .80
|
||
|
||
jsr CSH.IsOPChar
|
||
bcs .90
|
||
|
||
>LDYA L.CSH.BOPS we are at V1 op1 V2 op2...
|
||
jsr CSH.LookupOP
|
||
bcs .90
|
||
|
||
stx ZPPtr3 save OP(n)
|
||
|
||
.32 plx get OP(n-1)
|
||
bmi .33 $ff....
|
||
|
||
cpx ZPPtr3
|
||
bcc .33 OP(n) has precedence, on stack : V1,V2
|
||
|
||
>LDYA ZPPtr2 OP(n-1) has precedence...
|
||
jsr CSH.BOP.EXEC compute V(n-1) <OP(n-1)> V(n)
|
||
bcc .32
|
||
|
||
bcs .99
|
||
|
||
.33 phx push back OP(n-1)
|
||
|
||
lda ZPPtr3 get OP(n)
|
||
pha push OP(n) on stack
|
||
|
||
jmp .10 go check for next token
|
||
*--------------------------------------
|
||
.80 plx any OP on stack ?
|
||
bmi .88
|
||
|
||
>LDYA ZPPtr2 Var Type
|
||
jsr CSH.BOP.EXEC
|
||
bcc .80
|
||
|
||
bcs .99
|
||
|
||
.90 lda #E.ESYN
|
||
|
||
.99 plx
|
||
bpl .99
|
||
|
||
sec
|
||
bra .89
|
||
|
||
.88 clc
|
||
|
||
>LDYA ZPPtr2 Type/Qual
|
||
|
||
.89 plx
|
||
stx ZPPtr3
|
||
plx
|
||
stx ZPPtr2+1
|
||
plx
|
||
stx ZPPtr2
|
||
plx
|
||
stx ZPPtr1+1
|
||
plx
|
||
stx ZPPtr1
|
||
|
||
rts
|
||
*--------------------------------------
|
||
CSH.AddContCharP
|
||
ldy #0
|
||
|
||
.1 jsr CSH.GetNextChar
|
||
bcs .9
|
||
|
||
cmp #C.CR
|
||
beq .9
|
||
|
||
cmp #'"'
|
||
beq .2
|
||
|
||
sta (ZPCSHConst),y
|
||
iny
|
||
bra .1
|
||
|
||
.2 lda #0
|
||
sta (ZPCSHConst),y
|
||
>PUSHW ZPCSHConst Push PTR on stack
|
||
|
||
tya
|
||
sec
|
||
adc ZPCSHConst
|
||
sta ZPCSHConst
|
||
bcc .3
|
||
|
||
inc ZPCSHConst+1
|
||
.3 jsr CSH.GetNextChar Skip "
|
||
|
||
clc
|
||
rts
|
||
|
||
.9 lda #E.ESYN
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
CSH.GetNumOnStack
|
||
cpy #CSH.T.FLOAT
|
||
bcc .1
|
||
|
||
bne .99
|
||
|
||
>PUSHW ZPInputBufPtr
|
||
>PUSHWI ZPInputBufPtr
|
||
>SYSCALL StrToF
|
||
clc
|
||
rts
|
||
|
||
.1 >PUSHW ZPInputBufPtr
|
||
>PUSHWI ZPInputBufPtr
|
||
>PUSHBI 10
|
||
bcc .2
|
||
|
||
>SYSCALL StrToUL
|
||
bra .3
|
||
|
||
.2 >SYSCALL StrToL
|
||
|
||
.3 bcs .9
|
||
|
||
ldy ZPPtr2
|
||
lda CSH.TYPESIZE-1,y
|
||
cmp #4
|
||
beq .8
|
||
|
||
cmp #2
|
||
bne .4
|
||
|
||
ldy #1
|
||
>PULLA
|
||
sta (pStack),y
|
||
>PULLA
|
||
sta (pStack),y
|
||
clc
|
||
rts
|
||
|
||
.4 >PULLA
|
||
inc pStack
|
||
inc pStack
|
||
sta (pStack)
|
||
|
||
.8 clc
|
||
.9 rts
|
||
|
||
.99 lda #E.TMISMATCH
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
CSH.VarLookup >PUSHB.G CSH.hSymbols
|
||
|
||
>PUSHW ZPInputBufPtr
|
||
>PUSHWI 0 ScopeID
|
||
>SYSCALL SListLookup
|
||
bcs .9
|
||
|
||
phy
|
||
pha
|
||
|
||
txa
|
||
* clc
|
||
adc ZPInputBufPtr
|
||
sta ZPInputBufPtr
|
||
bcc .1
|
||
|
||
inc ZPInputBufPtr+1
|
||
clc
|
||
|
||
.1 >PUSHB.G CSH.hSymbols
|
||
|
||
pla
|
||
>PUSHA
|
||
pla
|
||
>PUSHA KeyID
|
||
|
||
>PUSHEA.G CSH.VarDef
|
||
>PUSHWI 8 8 bytes
|
||
>PUSHWZ From Start
|
||
>SYSCALL SListGetData
|
||
.9 rts
|
||
*--------------------------------------
|
||
CSH.GetValue lda ZPPtr2 target type
|
||
beq .1
|
||
|
||
>LDA.G CSH.VarDef Type
|
||
cmp #CSH.T.VOID
|
||
beq .11
|
||
|
||
cmp ZPPtr2
|
||
bne .9
|
||
|
||
.11 lda ZPPtr2+1 qual
|
||
>CMP.G CSH.VarDef+1
|
||
beq .2
|
||
|
||
.9 lda #E.TMISMATCH
|
||
sec
|
||
rts
|
||
|
||
.1 >LDA.G CSH.VarDef Type
|
||
sta ZPPtr2
|
||
iny
|
||
lda (pData),y
|
||
sta ZPPtr2+1
|
||
|
||
.2 lda ZPPtr3
|
||
pha
|
||
lda ZPPtr3+1
|
||
pha
|
||
|
||
>LDA.G CSH.VarDef+4
|
||
sta ZPPtr3
|
||
iny
|
||
lda (pData),y
|
||
sta ZPPtr3+1
|
||
|
||
ldx ZPPtr2
|
||
ldy CSH.TYPESIZE-1,x
|
||
|
||
.3 dey
|
||
lda (ZPPtr3),y
|
||
>PUSHA
|
||
tya
|
||
bne .3
|
||
|
||
pla
|
||
sta ZPPtr3+1
|
||
pla
|
||
sta ZPPtr3
|
||
|
||
clc
|
||
rts
|
||
*--------------------------------------
|
||
* Input:
|
||
* ZPInputBufPtr, Y,A = Expected type/qual
|
||
* Output:
|
||
* CS, A = EC
|
||
* CC, Y,A = type/qual, Result on Stack
|
||
*--------------------------------------
|
||
CSH.fCall ldx ZPPtr1
|
||
phx
|
||
ldx ZPPtr1+1 local : fdef Ptr
|
||
phx
|
||
ldx ZPPtr2 local : type
|
||
phx
|
||
ldx ZPPtr2+1 local : qual
|
||
phx
|
||
ldx ZPPtr3 local : variadic size
|
||
phx
|
||
ldx ZPPtr3+1 local : f
|
||
phx
|
||
|
||
>STYA ZPPtr2 save Type/qual
|
||
|
||
stz ZPPtr3 Reset VARIADIC byte count
|
||
|
||
>LDYA L.CSH.FN
|
||
jsr CSH.LookupFN
|
||
bcs .10
|
||
|
||
stx ZPPtr3+1 X = function index
|
||
|
||
>STYA ZPPtr1 f() definition, starting at returned type
|
||
|
||
jsr CSH.GetCharNB
|
||
bcs .10
|
||
|
||
cmp #'('
|
||
bne .52
|
||
|
||
jsr CSH.GetNextCharNB skip '('
|
||
|
||
bcs .10
|
||
|
||
jsr CSH.ZPPtr1GetW Y,A = Return value Type/Qual
|
||
|
||
ldx ZPPtr2
|
||
beq .1 no check required
|
||
|
||
cpy ZPPtr2
|
||
bne .91
|
||
|
||
cmp ZPPtr2+1
|
||
bne .91
|
||
|
||
.1 >STYA ZPPtr2 this will be the returned type/qual
|
||
|
||
jsr CSH.ZPPtr1GetNextW advance to arg list type
|
||
beq .7 end of list, go check ending ')'
|
||
*--------------------------------------
|
||
.3 cpy #CSH.T.VARIADIC if VARIADIC, don't advance to next arg and assume type = 0
|
||
bne .4
|
||
|
||
ldy #0
|
||
lda #0
|
||
|
||
.4 jsr CSH.ExpEval Y,A = 0 if VARIADIC
|
||
bcs .93
|
||
|
||
jsr CSH.GetVarSize Y,A = Var Type/Qual
|
||
|
||
tax
|
||
lda (ZPPtr1)
|
||
eor #CSH.T.VARIADIC
|
||
bne .5
|
||
|
||
txa
|
||
clc make sure pointer only 2 bytes
|
||
adc ZPPtr3
|
||
sta ZPPtr3 Add to byte count
|
||
bra .51 stay on VARIADIC tag
|
||
|
||
.5 jsr CSH.ZPPtr1NextW
|
||
|
||
.51 jsr CSH.GetCharNB
|
||
.10 bcs .90
|
||
|
||
cmp #','
|
||
bne .6
|
||
|
||
jsr CSH.GetNextCharNB Skip ,
|
||
jsr CSH.ZPPtr1GetW
|
||
bne .3 Another ARG....
|
||
|
||
.52 bra .90 extra args....error
|
||
|
||
.6 cmp #')'
|
||
bne .90
|
||
|
||
jsr CSH.ZPPtr1GetW
|
||
beq .8 no more arg after ')', exit
|
||
|
||
cpy #CSH.T.VARIADIC
|
||
bne .90 missing arg
|
||
|
||
>PUSHB ZPPtr3 push VARIADIC byte count
|
||
bra .8
|
||
|
||
.7 jsr CSH.GetCharNB
|
||
bcs .90
|
||
|
||
cmp #')'
|
||
bne .90
|
||
|
||
.8 jsr CSH.GetNextCharNB Skip )
|
||
|
||
ldx ZPPtr3+1
|
||
jsr CSH.Exec
|
||
bcs .93
|
||
|
||
>LDYA ZPPtr2 type/qual
|
||
bra .93
|
||
|
||
.90 lda #E.CSYN
|
||
bra .92
|
||
|
||
.91 lda #E.TMISMATCH
|
||
|
||
.92 sec
|
||
|
||
.93 plx
|
||
stx ZPPtr3+1
|
||
plx
|
||
stx ZPPtr3
|
||
|
||
plx
|
||
stx ZPPtr2+1
|
||
plx
|
||
stx ZPPtr2
|
||
|
||
plx
|
||
stx ZPPtr1+1
|
||
plx
|
||
stx ZPPtr1
|
||
|
||
.99 rts
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE usr/src/bin/csh.s.exp
|
||
LOAD usr/src/bin/csh.s
|
||
ASM
|