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anton
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1.1
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\ checks that postpone works correctly with words with special |
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\ compilation semantics |
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\ by M. Anton Ertl 1996 |
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\ This file is based on John Hayes' core.fr (coretest.fs), which has |
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\ the following copyright notice: |
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\ (C) 1995 JOHNS HOPKINS UNIVERSITY / APPLIED PHYSICS LABORATORY |
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\ MAY BE DISTRIBUTED FREELY AS LONG AS THIS COPYRIGHT NOTICE REMAINS. |
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\ my contributions to this file are in the public domain |
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\ you have to load John Hayes' tester.fs (=tester.fr) and coretest.fs |
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\ (core.fr) first |
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\ These tests are especially useful for showing that state-smart |
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\ implementations of words with special compilation semantics, |
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\ combined with a straight-forward implementation of POSTPONE (and |
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\ [COMPILE]) do not conform to the ANS Forth standard. The essential |
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\ sentences in the standad are: |
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\ 6.1.2033 POSTPONE CORE |
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\ ... |
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\ Compilation: ( <spaces>name -- ) |
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\ Skip leading space delimiters. Parse name delimited by a space. Find |
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\ name. Append the compilation semantics of name to the current |
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\ definition. |
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\ 6.2.2530 [COMPILE] bracket-compile CORE EXT |
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\ ... |
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\ Compilation: ( <spaces>name -- ) |
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\ Skip leading space delimiters. Parse name delimited by a space. Find |
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\ name. If name has other than default compilation semantics, append |
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\ them to the current definition;... |
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\ Note that the compilation semantics are appended, not some |
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\ state-dependent semantics. |
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\ first I test against a non-ANS solution suggested by Bernd Paysan |
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: state@-now ( -- f ) |
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state @ ; immediate |
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: state@ ( -- f ) |
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POSTPONE state@-now ; |
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{ state@ -> state @ } |
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\ here I test POSTPONE with all core words with special compilation |
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\ semantics. |
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testing postpone ( |
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: postpone-( |
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postpone ( ; |
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{ : pp1 [ postpone-( does nothing ) ] ; -> } |
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{ here pp1 -> here } |
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testing postpone +loop |
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: postpone-+loop |
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postpone +loop ; |
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{ : PGD2 DO I -1 [ POSTPONE-+LOOP ] ; -> } |
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{ 1 4 PGD2 -> 4 3 2 1 } |
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{ -1 2 PGD2 -> 2 1 0 -1 } |
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{ MID-UINT MID-UINT+1 PGD2 -> MID-UINT+1 MID-UINT } |
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{ : PGD4 DO 1 0 DO J LOOP -1 [ POSTPONE-+LOOP ] ; -> } |
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{ 1 4 PGD4 -> 4 3 2 1 } |
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{ -1 2 PGD4 -> 2 1 0 -1 } |
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{ MID-UINT MID-UINT+1 PGD4 -> MID-UINT+1 MID-UINT } |
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testing postpone ." |
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: postpone-." |
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postpone ." ; |
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: pdq2 [ postpone-." you should see this later. " ] cr ; |
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: pdq1 [ postpone-." you should see this first. " ] cr ; |
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{ pdq1 pdq2 -> } |
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testing postpone ; |
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: postpone-; |
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postpone ; ; |
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{ : psc [ postpone-; -> } |
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{ psc -> } |
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testing postpone abort" |
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: postpone-abort" |
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postpone abort" ; |
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{ : paq1 [ postpone-abort" this should not abort" ] ; -> } |
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testing postpone begin |
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: postpone-begin |
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postpone begin ; |
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{ : PB3 [ POSTPONE-BEGIN ] DUP 5 < WHILE DUP 1+ REPEAT ; -> } |
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{ 0 PB3 -> 0 1 2 3 4 5 } |
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{ 4 PB3 -> 4 5 } |
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{ 5 PB3 -> 5 } |
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{ 6 PB3 -> 6 } |
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{ : PB4 [ POSTPONE-BEGIN ] DUP 1+ DUP 5 > UNTIL ; -> } |
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{ 3 PB4 -> 3 4 5 6 } |
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{ 5 PB4 -> 5 6 } |
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{ 6 PB4 -> 6 7 } |
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{ : PB5 [ POSTPONE-BEGIN ] DUP 2 > WHILE DUP 5 < WHILE DUP 1+ REPEAT 123 ELSE 345 THEN ; -> } |
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{ 1 PB5 -> 1 345 } |
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{ 2 PB5 -> 2 345 } |
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{ 3 PB5 -> 3 4 5 123 } |
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{ 4 PB5 -> 4 5 123 } |
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{ 5 PB5 -> 5 123 } |
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testing postpone do |
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: postpone-do |
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postpone do ; |
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{ : PDO1 [ POSTPONE-DO ] I LOOP ; -> } |
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{ 4 1 PDO1 -> 1 2 3 } |
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{ 2 -1 PDO1 -> -1 0 1 } |
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{ MID-UINT+1 MID-UINT PDO1 -> MID-UINT } |
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{ : PDO2 [ POSTPONE-DO ] I -1 +LOOP ; -> } |
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{ 1 4 PDO2 -> 4 3 2 1 } |
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{ -1 2 PDO2 -> 2 1 0 -1 } |
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{ MID-UINT MID-UINT+1 PDO2 -> MID-UINT+1 MID-UINT } |
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{ : PDO3 [ POSTPONE-DO ] 1 0 [ POSTPONE-DO ] J LOOP LOOP ; -> } |
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{ 4 1 PDO3 -> 1 2 3 } |
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{ 2 -1 PDO3 -> -1 0 1 } |
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{ MID-UINT+1 MID-UINT PDO3 -> MID-UINT } |
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{ : PDO4 [ POSTPONE-DO ] 1 0 [ POSTPONE-DO ] J LOOP -1 +LOOP ; -> } |
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{ 1 4 PDO4 -> 4 3 2 1 } |
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{ -1 2 PDO4 -> 2 1 0 -1 } |
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{ MID-UINT MID-UINT+1 PDO4 -> MID-UINT+1 MID-UINT } |
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{ : PDO5 123 SWAP 0 [ POSTPONE-DO ] I 4 > IF DROP 234 LEAVE THEN LOOP ; -> } |
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{ 1 PDO5 -> 123 } |
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{ 5 PDO5 -> 123 } |
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{ 6 PDO5 -> 234 } |
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{ : PDO6 ( PAT: {0 0},{0 0}{1 0}{1 1},{0 0}{1 0}{1 1}{2 0}{2 1}{2 2} ) |
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0 SWAP 0 [ POSTPONE-DO ] |
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I 1+ 0 [ POSTPONE-DO ] I J + 3 = IF I UNLOOP I UNLOOP EXIT THEN 1+ LOOP |
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LOOP ; -> } |
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{ 1 PDO6 -> 1 } |
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{ 2 PDO6 -> 3 } |
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{ 3 PDO6 -> 4 1 2 } |
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testing postpone does> |
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: postpone-does> |
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postpone does> ; |
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{ : PDOES1 [ POSTPONE-DOES> ] @ 1 + ; -> } |
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{ : PDOES2 [ POSTPONE-DOES> ] @ 2 + ; -> } |
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{ CREATE PCR1 -> } |
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{ PCR1 -> HERE } |
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{ ' PCR1 >BODY -> HERE } |
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{ 1 , -> } |
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{ PCR1 @ -> 1 } |
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{ PDOES1 -> } |
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{ PCR1 -> 2 } |
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{ PDOES2 -> } |
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{ PCR1 -> 3 } |
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{ : pWEIRD: CREATE [ POSTPONE-DOES> ] 1 + [ POSTPONE-DOES> ] 2 + ; -> } |
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{ pWEIRD: PW1 -> } |
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{ ' PW1 >BODY -> HERE } |
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{ PW1 -> HERE 1 + } |
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{ PW1 -> HERE 2 + } |
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testing postpone else |
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: postpone-else |
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postpone else ; |
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{ : PELSE1 IF 123 [ postpone-ELSE ] 234 THEN ; -> } |
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{ 0 PELSE1 -> 234 } |
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{ 1 PELSE1 -> 123 } |
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{ : PELSE2 BEGIN DUP 2 > WHILE DUP 5 < WHILE DUP 1+ REPEAT 123 [ postpone-ELSE ] 345 THEN ; -> } |
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{ 1 PELSE2 -> 1 345 } |
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{ 2 PELSE2 -> 2 345 } |
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{ 3 PELSE2 -> 3 4 5 123 } |
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{ 4 PELSE2 -> 4 5 123 } |
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{ 5 PELSE2 -> 5 123 } |
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testing postpone if |
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: postpone-if |
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postpone if ; |
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{ : PIF1 [ POSTPONE-IF ] 123 THEN ; -> } |
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{ : PIF2 [ POSTPONE-IF ] 123 ELSE 234 THEN ; -> } |
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{ 0 PIF1 -> } |
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{ 1 PIF1 -> 123 } |
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{ -1 PIF1 -> 123 } |
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{ 0 PIF2 -> 234 } |
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{ 1 PIF2 -> 123 } |
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{ -1 PIF1 -> 123 } |
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{ : PIF6 ( N -- 0,1,..N ) DUP [ POSTPONE-IF ] DUP >R 1- RECURSE R> THEN ; -> } |
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{ 0 PIF6 -> 0 } |
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{ 1 PIF6 -> 0 1 } |
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{ 2 PIF6 -> 0 1 2 } |
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{ 3 PIF6 -> 0 1 2 3 } |
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{ 4 PIF6 -> 0 1 2 3 4 } |
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testing postpone literal |
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: postpone-literal |
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postpone literal ; |
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{ : plit [ 42 postpone-literal ] ; -> } |
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{ plit -> 42 } |
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testing postpone loop |
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: postpone-loop |
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postpone loop ; |
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{ : PLOOP1 DO I [ POSTPONE-LOOP ] ; -> } |
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{ 4 1 PLOOP1 -> 1 2 3 } |
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{ 2 -1 PLOOP1 -> -1 0 1 } |
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{ MID-UINT+1 MID-UINT PLOOP1 -> MID-UINT } |
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{ : PLOOP3 DO 1 0 DO J [ POSTPONE-LOOP ] [ POSTPONE-LOOP ] ; -> } |
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{ 4 1 PLOOP3 -> 1 2 3 } |
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{ 2 -1 PLOOP3 -> -1 0 1 } |
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{ MID-UINT+1 MID-UINT PLOOP3 -> MID-UINT } |
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{ : PLOOP4 DO 1 0 DO J [ POSTPONE-LOOP ] -1 +LOOP ; -> } |
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{ 1 4 PLOOP4 -> 4 3 2 1 } |
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{ -1 2 PLOOP4 -> 2 1 0 -1 } |
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{ MID-UINT MID-UINT+1 PLOOP4 -> MID-UINT+1 MID-UINT } |
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{ : PLOOP5 123 SWAP 0 DO I 4 > IF DROP 234 LEAVE THEN [ POSTPONE-LOOP ] ; -> } |
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{ 1 PLOOP5 -> 123 } |
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{ 5 PLOOP5 -> 123 } |
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{ 6 PLOOP5 -> 234 } |
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{ : PLOOP6 ( PAT: {0 0},{0 0}{1 0}{1 1},{0 0}{1 0}{1 1}{2 0}{2 1}{2 2} ) |
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0 SWAP 0 DO |
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I 1+ 0 DO I J + 3 = IF I UNLOOP I UNLOOP EXIT THEN 1+ [ POSTPONE-LOOP ] |
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[ POSTPONE-LOOP ] ; -> } |
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{ 1 PLOOP6 -> 1 } |
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{ 2 PLOOP6 -> 3 } |
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{ 3 PLOOP6 -> 4 1 2 } |
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testing postpone postpone |
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: postpone-postpone |
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postpone postpone ; |
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{ : PPP1 123 ; -> } |
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{ : PPP4 [ POSTPONE-POSTPONE PPP1 ] ; IMMEDIATE -> } |
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{ : PPP5 PPP4 ; -> } |
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{ PPP5 -> 123 } |
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{ : PPP6 345 ; IMMEDIATE -> } |
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{ : PPP7 [ POSTPONE-POSTPONE PPP6 ] ; -> } |
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{ PPP7 -> 345 } |
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testing postpone recurse |
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: postpone-recurse |
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postpone recurse ; |
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{ : GREC ( N -- 0,1,..N ) DUP IF DUP >R 1- [ postpone-RECURSE ] R> THEN ; -> } |
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{ 0 GREC -> 0 } |
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{ 1 GREC -> 0 1 } |
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{ 2 GREC -> 0 1 2 } |
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{ 3 GREC -> 0 1 2 3 } |
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{ 4 GREC -> 0 1 2 3 4 } |
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testing postpone repeat |
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: postpone-repeat |
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postpone repeat ; |
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{ : PREP3 BEGIN DUP 5 < WHILE DUP 1+ [ POSTPONE-REPEAT ] ; -> } |
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{ 0 PREP3 -> 0 1 2 3 4 5 } |
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{ 4 PREP3 -> 4 5 } |
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{ 5 PREP3 -> 5 } |
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{ 6 PREP3 -> 6 } |
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{ : PREP5 BEGIN DUP 2 > WHILE DUP 5 < WHILE DUP 1+ [ POSTPONE-REPEAT ] 123 ELSE 345 THEN ; -> } |
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{ 1 PREP5 -> 1 345 } |
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{ 2 PREP5 -> 2 345 } |
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{ 3 PREP5 -> 3 4 5 123 } |
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{ 4 PREP5 -> 4 5 123 } |
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{ 5 PREP5 -> 5 123 } |
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testing postpone S" |
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: postpone-s" |
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postpone s" ; |
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{ : PSQ4 [ postpone-S" XY" ] ; -> } |
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{ PSQ4 SWAP DROP -> 2 } |
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{ PSQ4 DROP DUP C@ SWAP CHAR+ C@ -> 58 59 } |
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testing postpone then |
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: postpone-then |
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postpone then ; |
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{ : PTH1 IF 123 [ POSTPONE-THEN ] ; -> } |
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{ : PTH2 IF 123 ELSE 234 [ POSTPONE-THEN ] ; -> } |
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{ 0 PTH1 -> } |
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{ 1 PTH1 -> 123 } |
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{ -1 PTH1 -> 123 } |
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{ 0 PTH2 -> 234 } |
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{ 1 PTH2 -> 123 } |
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{ -1 PTH1 -> 123 } |
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{ : PTH5 BEGIN DUP 2 > WHILE DUP 5 < WHILE DUP 1+ REPEAT 123 ELSE 345 [ POSTPONE-THEN ] ; -> } |
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{ 1 PTH5 -> 1 345 } |
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{ 2 PTH5 -> 2 345 } |
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{ 3 PTH5 -> 3 4 5 123 } |
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{ 4 PTH5 -> 4 5 123 } |
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{ 5 PTH5 -> 5 123 } |
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{ : PTH6 ( N -- 0,1,..N ) DUP IF DUP >R 1- RECURSE R> [ POSTPONE-THEN ] ; -> } |
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{ 0 PTH6 -> 0 } |
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{ 1 PTH6 -> 0 1 } |
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{ 2 PTH6 -> 0 1 2 } |
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{ 3 PTH6 -> 0 1 2 3 } |
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{ 4 PTH6 -> 0 1 2 3 4 } |
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testing postpone until |
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: postpone-until |
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postpone until ; |
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{ : PUNT4 BEGIN DUP 1+ DUP 5 > [ postpone-UNTIL ] ; -> } |
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{ 3 PUNT4 -> 3 4 5 6 } |
| 338 : |
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{ 5 PUNT4 -> 5 6 } |
| 339 : |
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{ 6 PUNT4 -> 6 7 } |
| 340 : |
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| 341 : |
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testing postpone while |
| 342 : |
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: postpone-while |
| 343 : |
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postpone while ; |
| 344 : |
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| 345 : |
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{ : PWH3 BEGIN DUP 5 < [ POSTPONE-WHILE ] DUP 1+ REPEAT ; -> } |
| 346 : |
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{ 0 PWH3 -> 0 1 2 3 4 5 } |
| 347 : |
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{ 4 PWH3 -> 4 5 } |
| 348 : |
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{ 5 PWH3 -> 5 } |
| 349 : |
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{ 6 PWH3 -> 6 } |
| 350 : |
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| 351 : |
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{ : PWH5 BEGIN DUP 2 > [ POSTPONE-WHILE ] DUP 5 < [ POSTPONE-WHILE ] DUP 1+ REPEAT 123 ELSE 345 THEN ; -> } |
| 352 : |
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{ 1 PWH5 -> 1 345 } |
| 353 : |
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{ 2 PWH5 -> 2 345 } |
| 354 : |
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{ 3 PWH5 -> 3 4 5 123 } |
| 355 : |
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{ 4 PWH5 -> 4 5 123 } |
| 356 : |
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{ 5 PWH5 -> 5 123 } |
| 357 : |
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| 358 : |
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| 359 : |
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|
testing postpone [ |
| 360 : |
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: postpone-[ |
| 361 : |
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postpone [ ; |
| 362 : |
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| 363 : |
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{ here postpone-[ -> here } |
| 364 : |
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| 365 : |
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testing postpone ['] |
| 366 : |
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: postpone-['] |
| 367 : |
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postpone ['] ; |
| 368 : |
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| 369 : |
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{ : PTICK1 123 ; -> } |
| 370 : |
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{ : PTICK2 [ postpone-['] PTICK1 ] ; IMMEDIATE -> } |
| 371 : |
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{ PTICK2 EXECUTE -> 123 } |
| 372 : |
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| 373 : |
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testing postpone [char] |
| 374 : |
|
|
: postpone-[char] |
| 375 : |
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postpone [char] ; |
| 376 : |
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| 377 : |
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{ : PCHAR1 [ postpone-[CHAR] X ] ; -> } |
| 378 : |
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{ : PCHAR2 [ postpone-[CHAR] HELLO ] ; -> } |
| 379 : |
|
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{ PCHAR1 -> 58 } |
| 380 : |
|
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{ PCHAR2 -> 48 } |
| 381 : |
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|