xcomp: add XCOMPILE and X[COMPILE]
This allows us to move words like ABORT" to xcomp-core, which is I think the last roadblock before being able to unify all drivers into a single xcomp layer.
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8
blk/263
8
blk/263
@ -5,7 +5,11 @@ VARIABLE XCURRENT
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: (xentry) XCON (entry) XCOFF ;
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: XCREATE (xentry) 11 C, ;
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: XCODE XCON CODE XCOFF ;
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: XIMM XCON IMMEDIATE XCOFF ;
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: _xapply ( a -- a-off )
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DUP ORG @ > IF ORG @ - BIN( @ + THEN ;
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: XCOMPILE
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XCON ' _xapply LITA
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LIT< , (find) DROP _xapply , XCOFF ;
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: X[COMPILE] XCON ' _xapply , XCOFF ;
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2
blk/265
2
blk/265
@ -4,7 +4,7 @@
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XCURRENT @ SWAP ( xcur w ) _find ( a f )
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IF ( a )
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DUP IMMED? IF ABORT THEN
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DUP ORG @ > IF ORG @ - BIN( @ + THEN ,
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_xapply ,
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ELSE ( w )
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0x02 RAM+ @ SWAP ( cur w ) _find ( a f )
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IF DUP IMMED? NOT IF ABORT THEN EXECUTE
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2
blk/288
2
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@ -1,4 +1,4 @@
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PC ORG @ 0x22 + ! ( litWord, 0xf7, very tight on the 0x100 limit )
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PC ORG @ 0x22 + ! ( litWord, 0xf7, tight on the 0x100 limit )
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( Like numberWord, but instead of being followed by a 2 bytes
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number, it's followed by a null-terminated string. When
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called, puts the string's address on PS )
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22
blk/416
22
blk/416
@ -1,14 +1,14 @@
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( LITN has to be defined after the last immediate usage of
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it to avoid bootstrapping issues )
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: LITN 32 , , ( 32 == NUMBER ) ;
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: EMIT
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( 0x53==(emit) override )
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0x53 RAM+ @ DUP IF EXECUTE ELSE DROP (emit) THEN ;
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: IMMED? 1- C@ 0x80 AND ;
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: (print)
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BEGIN
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C@+ ( a+1 c )
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( exit if null or 0xd )
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DUP 0xd = OVER NOT OR IF 2DROP EXIT THEN
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EMIT ( a )
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AGAIN
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;
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( ';' can't have its name right away because, when created, it
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is not an IMMEDIATE yet and will not be treated properly by
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xcomp. )
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: _
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['] EXIT ,
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R> DROP ( exit : )
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; IMMEDIATE
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25
blk/417
25
blk/417
@ -1,16 +1,13 @@
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XCURRENT @ ( to PSP )
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: :
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(entry)
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( We cannot use LITN as IMMEDIATE because of bootstrapping
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issues. Same thing for ",".
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32 == NUMBER 14 == compiledWord )
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[ 32 H@ ! 2 ALLOT 14 H@ ! 2 ALLOT ] C,
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: ,"
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BEGIN
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WORD
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(find)
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( is word )
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IF DUP IMMED? IF EXECUTE ELSE , THEN
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( maybe number )
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ELSE (parse) LITN THEN
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C<
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( 34 is ASCII for " )
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DUP 34 = IF DROP EXIT THEN C,
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AGAIN ;
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( from PSP ) ';' SWAP 4 - C!
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: ."
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34 , ( 34 == litWord ) ," 0 C,
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COMPILE (print)
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; IMMEDIATE
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: ABORT" [COMPILE] ." COMPILE ABORT ; IMMEDIATE
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14
blk/418
Normal file
14
blk/418
Normal file
@ -0,0 +1,14 @@
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( LITN has to be defined after the last immediate usage of
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it to avoid bootstrapping issues )
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: LITN 32 , , ( 32 == NUMBER ) ;
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: IMMED? 1- C@ 0x80 AND ;
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( ';' can't have its name right away because, when created, it
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is not an IMMEDIATE yet and will not be treated properly by
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xcomp. )
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: _
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['] EXIT ,
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R> DROP ( exit : )
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; IMMEDIATE
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16
blk/419
Normal file
16
blk/419
Normal file
@ -0,0 +1,16 @@
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XCURRENT @ ( to PSP )
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: :
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(entry)
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( We cannot use LITN as IMMEDIATE because of bootstrapping
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issues. Same thing for ",".
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32 == NUMBER 14 == compiledWord )
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[ 32 H@ ! 2 ALLOT 14 H@ ! 2 ALLOT ] C,
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BEGIN
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WORD
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(find)
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( is word )
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IF DUP IMMED? IF EXECUTE ELSE , THEN
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( maybe number )
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ELSE (parse) LITN THEN
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AGAIN ;
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( from PSP ) ';' SWAP 4 - C!
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2
blk/420
2
blk/420
@ -8,6 +8,6 @@ itself to a full intepreter, which can then be relinked with
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the Relinker. There is no loader for these libraries because
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you will typically XPACK (B267) them.
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422 core 438 print
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422 core 440 print
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442 fmt 447 readln
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453 blk
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13
blk/438
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blk/438
@ -1,13 +0,0 @@
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: EMIT
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( 0x53==(emit) override )
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83 RAM+ @ DUP IF EXECUTE ELSE DROP (emit) THEN ;
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: (print)
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BEGIN
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C@+ ( a+1 c )
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( exit if null or 0xd )
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DUP 13 = OVER NOT OR IF 2DROP EXIT THEN
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EMIT ( a )
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AGAIN
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;
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16
blk/439
16
blk/439
@ -1,16 +0,0 @@
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: ,"
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BEGIN
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C<
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( 34 is ASCII for " )
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DUP 34 = IF DROP EXIT THEN C,
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AGAIN ;
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: ."
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34 , ( 34 == litWord ) ," 0 C,
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COMPILE (print)
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; IMMEDIATE
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: ABORT" [COMPILE] ." COMPILE ABORT ; IMMEDIATE
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: (uflw) ABORT" stack underflow" ;
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1
blk/440
1
blk/440
@ -1,3 +1,4 @@
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: (uflw) ABORT" stack underflow" ;
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: BS 8 EMIT ;
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: LF 10 EMIT ;
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: CR 13 EMIT ;
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BIN
emul/forth.bin
BIN
emul/forth.bin
Binary file not shown.
@ -4,6 +4,8 @@
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212 LOAD ( z80 assembler )
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262 LOAD ( xcomp )
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: CODE XCODE ;
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: COMPILE XCOMPILE ; IMMEDIATE
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: [COMPILE] X[COMPILE] ; IMMEDIATE
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: IMMEDIATE XIMM ;
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: (entry) (xentry) ;
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: : [ ' X: , ] ;
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@ -10,6 +10,8 @@ RAMSTART 0x70 + CONSTANT ACIA_MEM
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212 LOAD ( z80 assembler )
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262 LOAD ( xcomp )
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: CODE XCODE ;
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: COMPILE XCOMPILE ; IMMEDIATE
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: [COMPILE] X[COMPILE] ; IMMEDIATE
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: IMMEDIATE XIMM ;
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: (entry) (xentry) ;
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: CREATE XCREATE ;
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@ -9,6 +9,8 @@ RAMSTART 0x72 + CONSTANT KBD_MEM
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262 LOAD ( xcomp )
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522 LOAD ( font compiler )
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: CODE XCODE ;
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: COMPILE XCOMPILE ; IMMEDIATE
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: [COMPILE] X[COMPILE] ; IMMEDIATE
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: IMMEDIATE XIMM ;
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: (entry) (xentry) ;
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: CREATE XCREATE ; ( for KBD tbls )
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@ -4,6 +4,8 @@ RS_ADDR 0x80 - CONSTANT RAMSTART
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212 LOAD ( z80 assembler )
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262 LOAD ( xcomp )
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: CODE XCODE ;
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: COMPILE XCOMPILE ; IMMEDIATE
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: [COMPILE] X[COMPILE] ; IMMEDIATE
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: IMMEDIATE XIMM ;
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: (entry) (xentry) ;
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: : [ ' X: , ] ;
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