version 1.31, 1998/12/19 13:43:17
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version 1.32, 1999/02/03 00:10:20
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Line 25 decimal
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Line 25 decimal
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\ .( 12may93jaw |
\ .( 12may93jaw |
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: .( ( compilation "...<paren>" -- ) \ core-ext dot-paren |
: .( ( "ccc<paren>" -- ) \ core-ext dot-paren |
[char] ) parse type ; immediate |
\G Parse a string ccc delimited by a ) (right parenthesis). Display |
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\G the string. This is often used to display progress information |
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\G during compilation. See examples below. |
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[char] ) parse type ; immediate |
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\ VALUE 2>R 2R> 2R@ 17may93jaw |
\ VALUE 2>R 2R> 2R@ 17may93jaw |
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\ !! 2value |
\ !! 2value |
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: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
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\G Compile appropriate code such that, at run-time, cell pair w1, w2 are |
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\G placed on the stack. Interpretation semantics are undefined. |
swap postpone Literal postpone Literal ; immediate restrict |
swap postpone Literal postpone Literal ; immediate restrict |
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' drop alias d>s ( d -- n ) \ double d_to_s |
' drop alias d>s ( d -- n ) \ double d_to_s |
Line 70 decimal
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Line 75 decimal
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: CLiteral |
: CLiteral |
postpone (c") here over char+ allot place align ; immediate restrict |
postpone (c") here over char+ allot place align ; immediate restrict |
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: C" ( compilation "...<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
: C" ( compilation "ccc<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
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\G Compilation: parse a string ccc delimited by a " (double quote). At |
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\G run-time, return c-addr which specifies the counted string ccc. |
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\G Interpretation semantics are undefined. |
[char] " parse postpone CLiteral ; immediate restrict |
[char] " parse postpone CLiteral ; immediate restrict |
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\ [COMPILE] 17may93jaw |
\ [COMPILE] 17may93jaw |
Line 87 decimal
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Line 95 decimal
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\ ERASE 17may93jaw |
\ ERASE 17may93jaw |
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: erase ( addr len -- ) \ core-ext |
: erase ( addr len -- ) \ core-ext |
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\G If len>0, clear all bits in each location of a memory region |
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\G of len address units starting at address addr. |
\ !! dependence on "1 chars 1 =" |
\ !! dependence on "1 chars 1 =" |
( 0 1 chars um/mod nip ) 0 fill ; |
( 0 1 chars um/mod nip ) 0 fill ; |
: blank ( addr len -- ) \ string |
: blank ( addr len -- ) \ string |
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\G If len>0, store the character value for a space in each |
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\G location of a memory region |
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\G of len character units starting at address addr. |
bl fill ; |
bl fill ; |
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\ SEARCH 02sep94py |
\ SEARCH 02sep94py |
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: search ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 flag ) \ string |
: search ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 flag ) \ string |
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\G Search the string specified by c-addr1, u1 for the string |
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\G speficied by c-addr2, u2. If flag is true: match was found |
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\G at c-addr3 with u3 characters remaining. If flag is false: |
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\G no match was found; c-addr3, u3 are equal to c-addr1, u1. |
\ not very efficient; but if we want efficiency, we'll do it as primitive |
\ not very efficient; but if we want efficiency, we'll do it as primitive |
2>r 2dup |
2>r 2dup |
begin |
begin |
Line 236 variable span ( -- a-addr ) \ core-ext
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Line 253 variable span ( -- a-addr ) \ core-ext
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forth-wordlist set-current |
forth-wordlist set-current |
THEN ; |
THEN ; |
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: marker ( "mark" -- ) |
: marker ( "<spaces> name" -- ) \ core-ext |
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\G Create a definition, @var{name} (called a @var{mark}) whose |
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\G execution semantics are to remove itself and everything |
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\G defined after it. |
marker, Create A, |
marker, Create A, |
DOES> ( -- ) |
DOES> ( -- ) |
@ marker! ; |
@ marker! ; |