mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-17 15:06:49 +00:00
600 lines
9.3 KiB
Plaintext
600 lines
9.3 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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CORE.Init lda #SL._
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>SYSCALL SListNew
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bcs .9
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>STA.G CC.hDefines
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lda #SL._
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>SYSCALL SListNew
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bcs .9
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>STA.G CC.hTags
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lda #SL._
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>SYSCALL SListNew
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bcs .9
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>STA.G CC.hSyms
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPSymBufPtr
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txa
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>STA.G CC.hSymBuf
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ScopeStk
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txa
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>STA.G CC.hScopeStk
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA StmtStk
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txa
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>STA.G CC.hStmtStk
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lda #'_'
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>STA.G CC.Label
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lda #CC.LookupIdx
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tay
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sta (pData),y
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* clc
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.9 rts
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*--------------------------------------
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CORE.Quit jsr FIO.FClose
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bne CORE.Quit
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>LDA.G CC.hSyms
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beq .1
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>SYSCALL SListFree
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.1 >LDA.G CC.hTags
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beq .2
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>SYSCALL SListFree
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.2 >LDA.G CC.hDefines
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beq .4
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>SYSCALL SListFree
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.4 >LDA.G CC.hDefineBuf
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jsr .7
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>LDA.G CC.hSymBuf
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jsr .7
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.5 jsr SYM.LookupFree
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bcc .5
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>LDA.G CC.hScopeStk
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jsr .7
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>LDA.G CC.hStmtStk
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.7 beq .8
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>SYSCALL FreeMem
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.8 rts
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*--------------------------------------
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CORE.CompileFile
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>SLEEP
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ldy #S.PS.hStdIn
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lda (pPS),y
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>SYSCALL FEOF
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bcs .9
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tay
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bne .1
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>SYSCALL GetChar
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bcs .9 I/O err
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cmp #3 Ctrl-C
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beq .9
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.1 jsr FIO.FGetS
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bcs .9
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jsr CORE.CompileLine
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bcc CORE.CompileFile
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.9 rts
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*--------------------------------------
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CORE.CompileLine
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jsr CC.GetCharNB
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bcs .9
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cmp #C.CR EOL....
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beq .8
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cmp #'#' directive ?
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bne .1
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jmp DIR
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.1 cmp #'/'
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bne .2 comments ...
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jmp CORE.Comments
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.2 cmp #'}' End of CPStmt ?
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bne .3
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jsr CORE.GetNCharNBNL Skip '}'
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jsr STMT.CPStmt.END
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bcs .9
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jsr CORE.GetCharNBNL
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bcc CORE.CompileLine
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rts
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*--------------------------------------
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.3 cmp #';' End of Stmt ?
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bne .4
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jsr CORE.GetNCharNBNL Skip ';'
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jsr STMT.Stmt.END
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bcs .9
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bra CORE.CompileLine
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.4 jsr CORE.CompileStmt
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bcs .9
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bra CORE.CompileLine
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.8 clc
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.9 rts
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*--------------------------------------
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* keyword : for, while ....
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*--------------------------------------
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CORE.CompileStmt
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>LDYA L.CC.KW
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jsr CC.LookupID
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bcs .1 not an internal CC keyword....
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txa
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>STA.G CC.CmdSave
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jmp (J.CC.KW,x)
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*--------------------------------------
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* Declaration : typedef, type var or type func()
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*--------------------------------------
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.1 >LDYA L.CC.SCSPEC
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jsr CC.LookupID
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bcs .2
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jmp (J.CC.SCSPEC,x)
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.2 >LDYA L.CC.TYPEQUAL
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jsr CC.LookupID
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bcs .3
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jmp DECL.X
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*--------------------------------------
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* Statement : ++var, var=, func();
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*--------------------------------------
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.3 jmp STMT.Get
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*--------------------------------------
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.99 lda #E.CSYN
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sec
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.9 rts
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*--------------------------------------
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CORE.Comments jsr CC.GetNextChar TODO : /* ... */
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cmp #'/'
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bne .90
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jmp CORE.SkipLine skip line.....
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.90 lda #E.CSYN
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sec
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rts
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*--------------------------------------
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CORE.SkipLine jsr CC.GetNextChar
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bcs .9
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cmp #C.CR
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bne CORE.SkipLine
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clc
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.9 rts
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*--------------------------------------
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CC.LookupID >STYA ZPLookupPtr
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jsr CC.GetIDLen
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bra CC.Lookup
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CC.LookupAOP >LDYA L.CC.AOPS
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>STYA ZPLookupPtr
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ldy #$ff
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.1 iny
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lda (ZPLineBufPtr),y
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sec
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beq .9
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jsr CC.IsOPChar
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bcs .9
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cmp #'='
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bne .1
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iny
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.8 tya
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bra CC.Lookup
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.9 rts
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CC.LookupOP >STYA ZPLookupPtr
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jsr CC.GetOPLen
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CC.Lookup phy Y = len
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ldx #0
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.1 lda (ZPLookupPtr)
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beq .9 Ending 0, not found....
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pla
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pha Get Back Len
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cmp (ZPLookupPtr) Same Len ?
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bne .4
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tay
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.2 lda (ZPLookupPtr),y
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.3 dey
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cmp (ZPLineBufPtr),y
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bne .4
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tya
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bne .2
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pla Found keyword...
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jsr CC.SkipA ..advance Ptr to char after it..
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lda ZPLookupPtr
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sec
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adc (ZPLookupPtr)
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tay
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lda ZPLookupPtr+1
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adc #0
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clc Y,A = F() def, X = F() index
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rts
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.4 inx
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inx
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lda (ZPLookupPtr)
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jsr CC.ZPLookupPtrAddAp1
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bra .1
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.9 ldx #$FF
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pla
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sec
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rts
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*--------------------------------------
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CC.ZPLookupPtrAddAp1
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sec
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adc ZPLookupPtr
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sta ZPLookupPtr
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bcc .1
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inc ZPLookupPtr+1
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.1 rts
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*--------------------------------------
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CC.GetDefine >LDA.G CC.hDefines
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jsr CC.SListLookup
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bcs .9
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>LDYA ZPLineBufPtr
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>STYA.G CC.SaveDefine
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txa
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>STA.G CC.hDefineBuf
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>SYSCALL GetMemPtr
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>STYA ZPLineBufPtr
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.9 rts
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*--------------------------------------
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CC.SListLookup >PUSHA hSList
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>PUSHA ...for SListGetData
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>PUSHW ZPLineBufPtr
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>PUSHWI 0 ScopeID
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>SYSCALL SListLookup
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bcs .99
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>PUSHA KeyID.HI
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tya
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>PUSHA KeyID.LO
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jsr CC.SkipX
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>PUSHWZ allocate
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>PUSHWI 65535 all
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>PUSHWZ From Start
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>SYSCALL SListGetData
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.9 rts Y,A = SymSize, X = hSymBuf
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.99 inc pStack discard extra hSList
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rts
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*--------------------------------------
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* CT Stack
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*--------------------------------------
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CC.Push ldy StmtPtr
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dey
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beq .9
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sty StmtPtr
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sta (StmtStk),y
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clc
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rts
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.9 lda #E.STKOVERFLOW
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sec
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rts
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*--------------------------------------
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* ZPLineBufPtr related Subs.....
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*--------------------------------------
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CC.SkipX txa
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CC.SkipA clc
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adc ZPLineBufPtr
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sta ZPLineBufPtr
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bcc .8
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inc ZPLineBufPtr+1
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.8 rts
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*--------------------------------------
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CC.GetOPLen ldy #0
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.1 iny
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lda (ZPLineBufPtr),y
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beq .8
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jsr CC.IsOPChar
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bcc .1
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.8 tya
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rts
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*--------------------------------------
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CC.GetIDLen ldy #0
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.1 iny
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lda (ZPLineBufPtr),y
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beq .8
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jsr CC.IsLetterOrDigit
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bcc .1
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.8 tya
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rts
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*--------------------------------------
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CC.GetCharNB jsr CC.GetChar
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bcs CORE.GetNCharNB.RTS
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jsr CC.CheckCharNB
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bcc CORE.GetNCharNB.RTS
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*--------------------------------------
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CORE.GetNCharNB jsr CC.GetNextChar
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bcs CORE.GetNCharNB.RTS
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jsr CC.CheckCharNB
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bcs CORE.GetNCharNB
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CORE.GetNCharNB.RTS
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rts
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*--------------------------------------
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CORE.GetCharNBNL
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jsr CC.GetChar
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bcs CORE.GetNCharNB.RTS
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jsr CC.CheckCharNB
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bcs CORE.GetNCharNBNL
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cmp #C.CR
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clc
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bne CORE.GetNCharNB.RTS
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jsr FIO.FGetS
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bcc CORE.GetCharNBNL
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rts
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*--------------------------------------
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CORE.GetNCharNBNL
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jsr CORE.GetNCharNB
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bcs .9
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cmp #C.CR
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clc
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bne .9
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jsr FIO.FGetS
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bcc CORE.GetCharNBNL
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.9 rts
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*--------------------------------------
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CC.CheckSpace jsr CC.GetChar
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bcs .90
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cmp #C.SPACE
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bne .90
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jsr CORE.GetNCharNB
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bcc .99
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.90 lda #E.CSYN
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sec
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.99 rts
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*--------------------------------------
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CC.CheckCharNB cmp #C.SPACE
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beq .9
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cmp #C.TAB
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beq .9
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clc
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.9 rts
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*--------------------------------------
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* https://riptutorial.com/c/example/16255/character-literals
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* 'c', '\abefnrtv', '\123', '\xFF'
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*--------------------------------------
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CC.GetNextCharEsc
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jsr CC.GetNextChar
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bcs .9
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cmp #'\'
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bne .8
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jsr CC.GetNextChar
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bcs .8
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ldx #CC.EscChars.Cnt-1
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.1 cmp CC.EscChars,x
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beq .6
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dex
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bpl .1
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* TODO : \123, \xFF
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sec
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rts
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.6 lda CC.EscCodes,x
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bit .9
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clc
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rts
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.8 clc
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clv
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.9 rts
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*--------------------------------------
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CC.GetNextChar inc ZPLineBufPtr
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bne CC.GetChar
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inc ZPLineBufPtr+1
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*--------------------------------------
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CC.GetChar lda (ZPLineBufPtr)
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bne .8
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phy
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>LDA.G CC.hDefineBuf
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beq .1
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phx
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>SYSCALL FreeMem
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>STZ.G CC.hDefineBuf
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>LDYA.G CC.SaveDefine
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>STYA ZPLineBufPtr
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plx
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ply
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bra CC.GetChar
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.1 ply
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lda #C.CR
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.8 clc
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rts
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*---------------------------------------
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CC.IsEndArg cmp #']'
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beq .8
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cmp #','
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beq .8
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cmp #';'
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beq .8
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cmp #':'
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beq .8
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cmp #')'
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beq .8
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sec
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rts
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.8 clc
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rts
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*---------------------------------------
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CC.IsOPChar ldx #CC.OPChars.Cnt-1
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.1 cmp CC.OPChars,x
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beq .8
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dex
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bpl .1
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sec
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rts
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.8 clc
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rts
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*---------------------------------------
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CC.IsLetterOrDigit
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jsr CC.IsDigit10
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bcc CC.IsLetterRTS
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*---------------------------------------
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CC.IsLetter cmp #'_'
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bne .1
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clc
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rts
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.1 cmp #'A'
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bcc .9
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cmp #'Z'+1
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bcc CC.IsLetterRTS
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cmp #'a'
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bcc .9
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cmp #'z'+1
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rts CC if lowercase
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.9 sec
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CC.IsLetterRTS rts
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*---------------------------------------
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CC.IsDigit10 cmp #'0'
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bcc .9
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cmp #'9'+1
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rts cc if ok, cs if not
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.9 sec
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rts
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*--------------------------------------
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MAN
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SAVE usr/src/bin/cc.s.core
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LOAD usr/src/bin/cc.s
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ASM
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