version 1.16, 1997/05/21 20:39:39
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version 1.17, 1997/06/01 20:50:39
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Line 108 VARIABLE Colors Colors on
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Line 108 VARIABLE Colors Colors on
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: .struc |
: .struc |
uppercase on Str# .string ; |
uppercase on Str# .string ; |
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\ CODES 15may93jaw |
\ CODES (Branchtypes) 15may93jaw |
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21 CONSTANT RepeatCode |
21 CONSTANT RepeatCode |
22 CONSTANT AgainCode |
22 CONSTANT AgainCode |
Line 118 VARIABLE Colors Colors on
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Line 118 VARIABLE Colors Colors on
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11 CONSTANT AheadCode |
11 CONSTANT AheadCode |
13 CONSTANT WhileCode2 |
13 CONSTANT WhileCode2 |
14 CONSTANT Disable |
14 CONSTANT Disable |
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15 CONSTANT LeaveCode |
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\ FORMAT WORDS 13jun93jaw |
\ FORMAT WORDS 13jun93jaw |
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VARIABLE C-Stop |
VARIABLE C-Stop |
VARIABLE Branches |
VARIABLE Branches |
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VARIABLE BranchPointer |
VARIABLE BranchPointer \ point to the end of branch table |
VARIABLE SearchPointer |
VARIABLE SearchPointer |
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\ The branchtable consists of three entrys: |
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\ address of branch , branch destination , branch type |
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CREATE BranchTable 500 allot |
CREATE BranchTable 500 allot |
here 3 cells - |
here 3 cells - |
ACONSTANT MaxTable |
ACONSTANT MaxTable |
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: FirstBranch BranchTable cell+ SearchPointer ! ; |
: FirstBranch BranchTable cell+ SearchPointer ! ; |
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: (BranchAddr?) ( a-addr -- a-addr true | false ) |
: (BranchAddr?) ( a-addr1 -- a-addr2 true | false ) |
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\ searches a branch with destination a-addr1 |
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\ a-addr1: branch destination |
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\ a-addr2: pointer in branch table |
SearchPointer @ |
SearchPointer @ |
BEGIN dup BranchPointer @ u< |
BEGIN dup BranchPointer @ u< |
WHILE |
WHILE |
Line 161 ACONSTANT MaxTable
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Line 170 ACONSTANT MaxTable
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2drop true |
2drop true |
THEN ; |
THEN ; |
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: MyBranch ( a-addr -- a-addr a-addr2 ) |
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\ finds branch table entry for branch at a-addr |
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dup @ over + |
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BranchAddr? |
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BEGIN |
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WHILE 1 cells - @ |
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over <> |
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WHILE dup @ over + |
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MoreBranchAddr? |
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REPEAT |
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SearchPointer @ 3 cells - |
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ELSE true ABORT" SEE: Table failure" |
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THEN ; |
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\ |
\ |
\ addrw addrt |
\ addrw addrt |
\ BEGIN ... WHILE ... AGAIN ... THEN |
\ BEGIN ... WHILE ... AGAIN ... THEN |
Line 250 VARIABLE C-Pass
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Line 273 VARIABLE C-Pass
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THEN ; |
THEN ; |
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: Forward? ( a-addr true | false -- ) |
: Forward? ( a-addr true | false -- a-addr true | false ) |
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\ a-addr1 is pointer into branch table |
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\ returns true when jump is a forward jump |
IF dup dup @ swap 1 cells - @ - |
IF dup dup @ swap 1 cells - @ - |
Ahead? IF true ELSE drop false THEN |
Ahead? IF true ELSE drop false THEN |
\ only if forward jump |
\ only if forward jump |
ELSE false THEN ; |
ELSE false THEN ; |
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: RepeatCheck |
: RepeatCheck ( a-addr1 a-addr2 true | false -- false ) |
IF BEGIN 2dup |
IF BEGIN 2dup |
1 cells - @ swap dup @ + |
1 cells - @ swap dup @ + |
u<= |
u<= |
Line 295 VARIABLE C-Pass
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Line 320 VARIABLE C-Pass
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IF drop S" REPEAT " .struc nl |
IF drop S" REPEAT " .struc nl |
ELSE S" AGAIN " .struc nl |
ELSE S" AGAIN " .struc nl |
THEN |
THEN |
ELSE dup cell+ BranchAddr? Forward? |
ELSE MyBranch cell+ @ LeaveCode = |
IF dup cell+ @ WhileCode2 = |
IF S" LEAVE " .struc |
IF nl S" ELSE" .struc level+ |
ELSE |
ELSE level- nl S" ELSE" .struc level+ THEN |
dup cell+ BranchAddr? Forward? |
cell+ Disable swap ! |
IF dup cell+ @ WhileCode2 = |
ELSE S" AHEAD" .struc level+ |
IF nl S" ELSE" .struc level+ |
THEN |
ELSE level- nl S" ELSE" .struc level+ THEN |
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cell+ Disable swap ! |
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ELSE S" AHEAD" .struc level+ |
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THEN |
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THEN |
THEN |
THEN |
THEN |
THEN |
Debug? |
Debug? |
Line 309 VARIABLE C-Pass
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Line 338 VARIABLE C-Pass
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ELSE cell+ |
ELSE cell+ |
THEN ; |
THEN ; |
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: MyBranch ( a-addr -- a-addr a-addr2 ) |
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dup @ over + |
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BranchAddr? |
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BEGIN |
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WHILE 1 cells - @ |
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over <> |
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WHILE dup @ over + |
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MoreBranchAddr? |
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REPEAT |
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SearchPointer @ 3 cells - |
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ELSE true ABORT" SEE: Table failure" |
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THEN ; |
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: DebugBranch |
: DebugBranch |
Debug? |
Debug? |
IF dup @ over + swap THEN ; \ return 2 different addresses |
IF dup @ over + swap THEN ; \ return 2 different addresses |
Line 344 VARIABLE C-Pass
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Line 360 VARIABLE C-Pass
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level- nl |
level- nl |
S" WHILE " .struc |
S" WHILE " .struc |
level+ |
level+ |
ELSE nl S" IF " .struc level+ |
ELSE MyBranch cell+ @ LeaveCode = |
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IF s" 0= ?LEAVE " .struc |
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ELSE nl S" IF " .struc level+ |
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THEN |
THEN |
THEN |
THEN |
THEN |
THEN |
THEN |
Line 355 VARIABLE C-Pass
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Line 374 VARIABLE C-Pass
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Display? IF nl S" FOR" .struc level+ THEN ; |
Display? IF nl S" FOR" .struc level+ THEN ; |
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: .name-without |
: .name-without |
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\ prints a name without () e.g. (+LOOP) |
dup 1 cells - @ look IF name>string 1 /string 1- .struc ELSE drop THEN ; |
dup 1 cells - @ look IF name>string 1 /string 1- .struc ELSE drop THEN ; |
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: c-loop |
: c-loop |
Display? IF level- nl .name-without bl cemit nl THEN |
Display? IF level- nl .name-without bl cemit nl THEN |
DebugBranch cell+ cell+ ; |
DebugBranch cell+ |
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Scan? |
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IF dup BranchAddr? |
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BEGIN WHILE cell+ LeaveCode swap ! |
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dup MoreBranchAddr? |
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REPEAT |
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THEN |
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cell+ ; |
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: c-do |
: c-do |
Display? IF nl .name-without level+ THEN ; |
Display? IF nl .name-without level+ THEN ; |
Line 368 VARIABLE C-Pass
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Line 395 VARIABLE C-Pass
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Display? IF nl S" ?DO" .struc level+ THEN |
Display? IF nl S" ?DO" .struc level+ THEN |
DebugBranch cell+ ; |
DebugBranch cell+ ; |
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: c-leave |
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Display? IF S" LEAVE " .struc THEN |
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Debug? IF dup @ + THEN cell+ ; |
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: c-?leave |
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Display? IF S" ?LEAVE " .struc THEN |
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cell+ DebugBranch swap cell+ swap cell+ ; |
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: c-exit dup 1 cells - |
: c-exit dup 1 cells - |
CheckEnd |
CheckEnd |
IF Display? IF nlflag off S" ;" Com# .string THEN |
IF Display? IF nlflag off S" ;" Com# .string THEN |
Line 403 CREATE C-Table
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Line 422 CREATE C-Table
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' (s") A, ' c-s" A, |
' (s") A, ' c-s" A, |
' (.") A, ' c-." A, |
' (.") A, ' c-." A, |
' "lit A, ' c-c" A, |
' "lit A, ' c-c" A, |
comp' leave drop A, ' c-leave A, |
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comp' ?leave drop A, ' c-?leave A, |
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' (do) A, ' c-do A, |
' (do) A, ' c-do A, |
' (+do) A, ' c-do A, |
' (+do) A, ' c-do A, |
' (u+do) A, ' c-do A, |
' (u+do) A, ' c-do A, |
Line 446 c-extender !
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Line 463 c-extender !
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; |
; |
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: BranchTo? ( a-addr -- a-addr ) |
: BranchTo? ( a-addr -- a-addr ) |
Display? IF dup BranchAddr? |
Display? IF dup BranchAddr? |
IF |
IF |
BEGIN cell+ @ dup 20 u> |
BEGIN cell+ @ dup 20 u> |
IF drop nl S" BEGIN " .struc level+ |
IF drop nl S" BEGIN " .struc level+ |
ELSE |
ELSE |
dup Disable <> |
dup Disable <> over LeaveCode <> and |
IF WhileCode2 = |
IF WhileCode2 = |
IF nl S" THEN " .struc nl ELSE |
IF nl S" THEN " .struc nl ELSE |
level- nl S" THEN " .struc nl THEN |
level- nl S" THEN " .struc nl THEN |