version 1.1, 2002/04/27 14:52:30
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version 1.7, 2003/01/23 21:45:59
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Line 33
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Line 33
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create \-escape-table |
create \-escape-table |
7 c, 8 c, char c c, char d c, 27 c, 12 c, char g c, |
7 c, 8 c, char c c, char d c, 27 c, 12 c, char g c, |
char h c, char i c, char j c, char k c, char l c, char m c, 10 c, |
char h c, char i c, char j c, char k c, char l c, char m c, 10 c, |
char o c, char p c, char q c, 13 c, char s c, 8 c, char u c, |
char o c, char p c, char " c, 13 c, char s c, 9 c, char u c, |
11 c, |
11 c, |
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: \-escape ( c-addr1 -- c-addr2 c ) |
: \-escape ( c-addr1 -- c-addr2 c ) |
\ c-addr1 points at a char right after a '\', c-addr2 points right |
\ c-addr1 points at a char right after a '\', c-addr2 points right |
\ after the whole sequence, c is the translated char |
\ after the whole sequence, c is the translated char |
dup c@ dup [char] x = if |
dup c@ |
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dup [char] x = if |
drop char+ 16 parse-num exit |
drop char+ 16 parse-num exit |
endif |
endif |
dup [char] 0 [char] 8 within if |
dup [char] 0 [char] 8 within if |
drop 8 parse-num exit |
drop 8 parse-num exit |
endif |
endif |
dup [char] a [char] w within if |
dup [char] n = if |
[char] a - chars \-escape-table + c@ |
\ \-escapes were designed to translate to one character, so |
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\ this is quite ugly: copy all but the last char right away |
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drop newline 1- |
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2dup here swap chars dup allot move |
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chars + c@ |
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else |
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dup [char] a [char] w within if |
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[char] a - chars \-escape-table + c@ |
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endif |
endif |
endif |
1 chars under+ ; |
1 chars under+ ; |
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Line 54 char o c, char p c, char q c, 13
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Line 63 char o c, char p c, char q c, 13
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\G parses string, translating @code{\}-escapes to characters (as in |
\G parses string, translating @code{\}-escapes to characters (as in |
\G C). The resulting string resides at @code{here char+}. The |
\G C). The resulting string resides at @code{here char+}. The |
\G supported @code{\-escapes} are: @code{\a} BEL (alert), @code{\b} |
\G supported @code{\-escapes} are: @code{\a} BEL (alert), @code{\b} |
\G BS, @code{\e} ESC (not in C99), @code{\f} FF, @code{\n} LF (or |
\G BS, @code{\e} ESC (not in C99), @code{\f} FF, @code{\n} newline, |
\G newline?), @code{\r} CR, @code{\t} HT, @code{\v} VT, @code{\"} ", |
\G @code{\r} CR, @code{\t} HT, @code{\v} VT, @code{\"} ", |
\G @code{\}[0-7]+ octal numerical character value, @code{\x}[0-9a-f]+ |
\G @code{\}[0-7]+ octal numerical character value, @code{\x}[0-9a-f]+ |
\G hex numerical character value; a @code{\} before any other |
\G hex numerical character value; a @code{\} before any other |
\G character represents that character (only ', \, ? in C99). |
\G character represents that character (only ', \, ? in C99). |
here >r 0 c, |
here >r |
>in @ chars source chars over + >r + begin ( parse-area R: here parse-end ) |
>in @ chars source chars over + >r + begin ( parse-area R: here parse-end ) |
dup r@ < while |
dup r@ < while |
dup c@ [char] " <> while |
dup c@ [char] " <> while |
Line 73 char o c, char p c, char q c, 13
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Line 82 char o c, char p c, char q c, 13
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char+ source >r - r> min char/ >in ! |
char+ source >r - r> min char/ >in ! |
r> drop |
r> drop |
here r> - dup negate allot |
here r> - dup negate allot |
here swap char/ 1 /string ; |
here swap char/ ; |
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:noname \"-parse save-mem ; |
:noname \"-parse save-mem ; |
:noname postpone (s") \"-parse dup c, 1+ chars allot drop ; |
:noname \"-parse save-mem 2dup postpone sliteral drop free throw ; |
interpret/compile: s\" ( compilation 'ccc"' -- ; run-time -- c-addr u ) \ gforth s-backslash-quote |
interpret/compile: s\" ( compilation 'ccc"' -- ; run-time -- c-addr u ) \ gforth s-backslash-quote |
\G Like @code{S"}, but translates C-like \-escape-sequences into |
\G Like @code{S"}, but translates C-like \-escape-sequences into |
\G single characters. See @code{\"-parse} for details. |
\G single characters. See @code{\"-parse} for details. |
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:noname \"-parse type ; |
:noname \"-parse type ; |
:noname postpone (.") \"-parse dup c, 1+ chars allot drop ; |
:noname postpone s\" postpone type ; |
interpret/compile: .\" ( compilation 'ccc"' -- ; run-time -- ) \ gforth dot-backslash-quote |
interpret/compile: .\" ( compilation 'ccc"' -- ; run-time -- ) \ gforth dot-backslash-quote |
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0 [if] \ test |
0 [if] \ test |
Line 91 interpret/compile: .\" ( compilation 'cc
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Line 100 interpret/compile: .\" ( compilation 'cc
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s" x1fg" drop \-escape 31 <> throw drop .s |
s" x1fg" drop \-escape 31 <> throw drop .s |
s" 00129" drop \-escape 10 <> throw drop .s |
s" 00129" drop \-escape 10 <> throw drop .s |
s" a" drop \-escape 7 <> throw drop .s |
s" a" drop \-escape 7 <> throw drop .s |
\"-parse " s" " compare 0<> throw .s |
\"-parse " s" " str= 0= throw .s |
\"-parse \a\b\c\e\f\n\r\t\v\100\x40xabcde" dump |
\"-parse \a\b\c\e\f\n\r\t\v\100\x40xabcde" dump |
s\" \a\bcd\e\fghijklm\nopq\rs\tu\v" \-escape-table over compare 0<> throw |
s\" \a\bcd\e\fghijklm\12op\"\rs\tu\v" \-escape-table over str= 0= throw |
s\" \0101\x041\"\\" name AA"\ compare 0<> throw |
s\" \w\0101\x041\"\\" name wAA"\ str= 0= throw |
s\" s\\\" \\" ' evaluate catch 0= throw |
s\" s\\\" \\" ' evaluate catch 0= throw |
[endif] |
[endif] |