version 1.45, 2000/09/23 15:46:56
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version 1.61, 2007/12/31 17:34:58
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\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
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\ Copyright (C) 1995,1998,2000 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1998,2000,2003,2005,2007 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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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,interpretation "ccc<paren>" -- ) \ core-ext dot-paren |
: .( ( compilation&interpretation "ccc<paren>" -- ) \ core-ext dot-paren |
\G Compilation and interpretation semantics: Parse a string @i{ccc} |
\G Compilation and interpretation semantics: Parse a string @i{ccc} |
\G delimited by a @code{)} (right parenthesis). Display the |
\G delimited by a @code{)} (right parenthesis). Display the |
\G string. This is often used to display progress information during |
\G string. This is often used to display progress information during |
Line 36 decimal
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Line 36 decimal
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\ !! 2value |
\ !! 2value |
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[ifundef] 2literal |
: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
\G Compile appropriate code such that, at run-time, cell pair @i{w1, w2} are |
\G Compile appropriate code such that, at run-time, cell pair @i{w1, w2} are |
\G placed on the stack. Interpretation semantics are undefined. |
\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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[then] |
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' drop alias d>s ( d -- n ) \ double d_to_s |
' drop alias d>s ( d -- n ) \ double d_to_s |
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Line 48 decimal
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Line 50 decimal
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\G In ANS Forth u3 can only be a positive signed number. |
\G In ANS Forth u3 can only be a positive signed number. |
>r s>d >r abs -rot |
>r s>d >r abs -rot |
s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um* |
s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um* |
swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod nip swap |
swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod |
r> IF dnegate THEN ; |
[ s" floored" environment? 0= throw ] [if] |
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-rot r> IF IF 1. d+ THEN dnegate ELSE drop THEN |
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[else] |
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nip swap r> IF dnegate THEN |
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[then] ; |
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\ CASE OF ENDOF ENDCASE 17may93jaw |
\ CASE OF ENDOF ENDCASE 17may93jaw |
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Line 73 decimal
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Line 79 decimal
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\ C" 17may93jaw |
\ C" 17may93jaw |
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: (c") "lit ; |
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: CLiteral |
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postpone (c") here over char+ allot place align ; immediate restrict |
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: C" ( compilation "ccc<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
: C" ( compilation "ccc<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
\G Compilation: parse a string @i{ccc} delimited by a @code{"} |
\G Compilation: parse a string @i{ccc} delimited by a @code{"} |
\G (double quote). At run-time, return @i{c-addr} which |
\G (double quote). At run-time, return @i{c-addr} which |
Line 97 decimal
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Line 98 decimal
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\ CONVERT 17may93jaw |
\ CONVERT 17may93jaw |
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: convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext |
: convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext-obsolescent |
\G OBSOLESCENT: superseded by @code{>number}. |
\G Obsolescent: superseded by @code{>number}. |
char+ true >number drop ; |
char+ true >number drop ; |
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\ ERASE 17may93jaw |
\ ERASE 17may93jaw |
Line 123 decimal
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Line 124 decimal
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begin |
begin |
dup r@ >= |
dup r@ >= |
while |
while |
over 2r@ swap -text 0= if |
2dup 2r@ string-prefix? if |
2swap 2drop 2r> 2drop true exit |
2swap 2drop 2r> 2drop true exit |
endif |
endif |
1 /string |
1 /string |
Line 132 decimal
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Line 133 decimal
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\ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
\ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
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[IFUNDEF] source-id |
: source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d |
: source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d |
\G Return 0 (the input source is the user input device), -1 (the |
\G Return 0 (the input source is the user input device), -1 (the |
\G input source is a string being processed by @code{evaluate}) or |
\G input source is a string being processed by @code{evaluate}) or |
Line 181 decimal
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Line 183 decimal
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r> loadline ! |
r> loadline ! |
>in ! |
>in ! |
false ; |
false ; |
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[THEN] |
\ This things we don't need, but for being complete... jaw |
\ This things we don't need, but for being complete... jaw |
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\ EXPECT SPAN 17may93jaw |
\ EXPECT SPAN 17may93jaw |
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variable span ( -- c-addr ) \ core-ext |
variable span ( -- c-addr ) \ core-ext-obsolescent |
\G @code{Variable} -- @i{c-addr} is the address of a cell that stores the |
\G @code{Variable} -- @i{c-addr} is the address of a cell that stores the |
\G length of the last string received by @code{expect}. OBSOLESCENT. |
\G length of the last string received by @code{expect}. OBSOLESCENT. |
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: expect ( c-addr +n -- ) \ core-ext |
: expect ( c-addr +n -- ) \ core-ext-obsolescent |
\G Receive a string of at most @i{+n} characters, and store it |
\G Receive a string of at most @i{+n} characters, and store it |
\G in memory starting at @i{c-addr}. The string is |
\G in memory starting at @i{c-addr}. The string is |
\G displayed. Input terminates when the <return> key is pressed or |
\G displayed. Input terminates when the <return> key is pressed or |
Line 240 variable span ( -- c-addr ) \ core-ext
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Line 242 variable span ( -- c-addr ) \ core-ext
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REPEAT |
REPEAT |
drop |
drop |
\ remember udp |
\ remember udp |
udp @ , ; |
udp @ , |
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\ remember dyncode-ptr |
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here ['] noop , compile-prim1 finish-code ; |
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: marker! ( mark -- ) |
: marker! ( mark -- ) |
\ reset included files count; resize will happen on next add-included-file |
\ reset included files count; resize will happen on next add-included-file |
Line 267 variable span ( -- c-addr ) \ core-ext
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Line 271 variable span ( -- c-addr ) \ core-ext
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REPEAT |
REPEAT |
drop |
drop |
\ restore udp and dp |
\ restore udp and dp |
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[IFDEF] forget-dyncode |
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dup cell+ @ forget-dyncode drop |
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[THEN] |
@ udp ! dp ! |
@ udp ! dp ! |
\ clean up vocabulary stack |
\ clean up vocabulary stack |
0 vp @ 0 |
0 vp @ 0 |