version 1.3, 2000/09/23 15:47:12
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version 1.5, 2001/06/16 22:53:38
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Line 22
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Line 22
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require ./vars.fs |
require ./vars.fs |
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create s"-buffer /line chars allot |
\ create s"-buffer /line chars allot |
has? compiler 0= |
has? compiler 0= |
[IF] : s" [ELSE] :noname [THEN] |
[IF] : s" [ELSE] :noname [THEN] |
[char] " parse |
[char] " parse |
/line min >r s"-buffer r@ cmove |
[ has? OS [IF] ] |
s"-buffer r> ; |
save-mem |
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[ [THEN] ] |
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; |
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\ /line min >r s"-buffer r@ cmove |
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\ s"-buffer r> ; |
has? compiler [IF] |
has? compiler [IF] |
:noname [char] " parse postpone SLiteral ; |
:noname [char] " parse postpone SLiteral ; |
interpret/compile: S" ( compilation 'ccc"' -- ; run-time -- c-addr u ) \ core,file s-quote |
interpret/compile: S" ( compilation 'ccc"' -- ; run-time -- c-addr u ) \ core,file s-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 the length, @i{u}, and the |
\G (double quote). At run-time, return the length, @i{u}, and the |
\G start address, @i{c-addr} of the string. Interpretation: parse |
\G start address, @i{c-addr} of the string. Interpretation: parse |
\G the string as before, and return @i{c-addr}, @i{u}. The |
\G the string as before, and return @i{c-addr}, @i{u}. Gforth |
\G string is stored in a temporary buffer which may be overwritten |
\G @code{allocate}s the string. The resulting memory leak is usually |
\G by subsequent uses of @code{S"}. |
\G not a problem; the exception is if you create strings containing |
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\G @code{S"} and @code{evaluate} them; then the leak is not bounded |
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\G by the size of the interpreted files and you may want to |
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\G @code{free} the strings. ANS Forth only guarantees one buffer of |
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\G 80 characters, so in standard programs you should assume that the |
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\G string lives only until the next @code{s"}. |
[THEN] |
[THEN] |
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:noname [char] " parse type ; |
:noname [char] " parse type ; |