Merge branch 'master' of git://factorcode.org/git/factor

db4
Slava Pestov 2009-09-12 21:45:22 -05:00
commit 5dfd1c70f0
9 changed files with 39 additions and 21 deletions

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@ -1,14 +1,15 @@
! Copyright (C) 2008 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: kernel combinators alien alien.strings alien.syntax
prettyprint.backend prettyprint.custom prettyprint.sections ;
math.parser prettyprint.backend prettyprint.custom
prettyprint.sections ;
IN: alien.prettyprint
M: alien pprint*
{
{ [ dup expired? ] [ drop \ BAD-ALIEN pprint-word ] }
{ [ dup pinned-c-ptr? not ] [ drop "( displaced alien )" text ] }
[ \ ALIEN: [ alien-address pprint* ] pprint-prefix ]
[ \ ALIEN: [ alien-address >hex text ] pprint-prefix ]
} cond ;
M: dll pprint* dll-path dup "DLL\" " "\"" pprint-string ;

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@ -9,7 +9,7 @@ HELP: DLL"
HELP: ALIEN:
{ $syntax "ALIEN: address" }
{ $values { "address" "a non-negative integer" } }
{ $values { "address" "a non-negative hexadecimal integer" } }
{ $description "Creates an alien object at parse time." }
{ $notes "Alien objects are invalidated between image saves and loads, and hence source files should not contain alien literals; this word is for interactive use only. See " { $link "alien-expiry" } " for details." } ;

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@ -9,7 +9,7 @@ IN: alien.syntax
SYNTAX: DLL" lexer get skip-blank parse-string dlopen parsed ;
SYNTAX: ALIEN: scan string>number <alien> parsed ;
SYNTAX: ALIEN: 16 scan-base <alien> parsed ;
SYNTAX: BAD-ALIEN <bad-alien> parsed ;

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@ -472,15 +472,15 @@ cell 8 = [
] unit-test
[ ALIEN: 123 ] [
123 [ <alien> ] compile-call
HEX: 123 [ <alien> ] compile-call
] unit-test
[ ALIEN: 123 ] [
123 [ { fixnum } declare <alien> ] compile-call
HEX: 123 [ { fixnum } declare <alien> ] compile-call
] unit-test
[ ALIEN: 123 ] [
[ 123 <alien> ] compile-call
[ HEX: 123 <alien> ] compile-call
] unit-test
[ f ] [
@ -522,8 +522,8 @@ cell 8 = [
[ ALIEN: 1234 ALIEN: 2234 ] [
ALIEN: 234 [
{ c-ptr } declare
[ 1000 swap <displaced-alien> ]
[ 2000 swap <displaced-alien> ] bi
[ HEX: 1000 swap <displaced-alien> ]
[ HEX: 2000 swap <displaced-alien> ] bi
] compile-call
] unit-test

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@ -49,6 +49,6 @@ M: openbsd statvfs>file-system-info ( file-system-info statvfs -- file-system-in
M: openbsd file-systems ( -- seq )
f 0 0 getfsstat dup io-error
<statvfs-array>
<statfs-array>
[ dup byte-length 0 getfsstat io-error ]
[ [ f_mntonname>> utf8 alien>string file-system-info ] { } map-as ] bi ;

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@ -55,7 +55,7 @@ cell 8 = [
] unit-test
] when
[ "ALIEN: 1234" ] [ 1234 <alien> unparse ] unit-test
[ "ALIEN: 1234" ] [ HEX: 1234 <alien> unparse ] unit-test
[ ] [ 0 B{ 1 2 3 } <displaced-alien> drop ] unit-test

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@ -282,12 +282,12 @@ HELP: fp-bitwise=
{ $examples
"Not-a-number equality:"
{ $example
"USING: math prettyprint ;"
"USING: kernel math prettyprint ;"
"0.0 0.0 / dup number= ."
"f"
}
{ $example
"USING: math prettyprint ;"
"USING: kernel math prettyprint ;"
"0.0 0.0 / dup fp-bitwise= ."
"t"
}
@ -299,7 +299,7 @@ HELP: fp-bitwise=
}
{ $example
"USING: math prettyprint ;"
"-0.0 0.0 = ."
"-0.0 0.0 number= ."
"t"
}
} ;

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@ -5,7 +5,7 @@ IN: math.parser
ARTICLE: "number-strings" "Converting between numbers and strings"
"These words only convert between real numbers and strings. Complex numbers are constructed by the parser (" { $link "parser" } ") and printed by the prettyprinter (" { $link "prettyprint" } ")."
$nl
"Note that only integers can be converted to and from strings using a representation other than base 10. Calling a word such as " { $link >oct } " on a float will give a result in base 10."
"Integers can be converted to and from arbitrary bases. Floating point numbers can only be converted to and from base 10 and 16."
$nl
"Converting numbers to strings:"
{ $subsection number>string }
@ -93,7 +93,19 @@ HELP: >oct
HELP: >hex
{ $values { "n" real } { "str" string } }
{ $description "Outputs a string representation of a number using base 16." } ;
{ $description "Outputs a string representation of a number using base 16." }
{ $examples
{ $example
"USING: math.parser prettyprint ;"
"3735928559 >hex ."
"\"deadbeef\""
}
{ $example
"USING: math.parser prettyprint ;"
"-15.5 >hex ."
"\"-f.8p0\""
}
} ;
HELP: string>float ( str -- n/f )
{ $values { "str" string } { "n/f" "a real number or " { $link f } } }

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@ -59,20 +59,25 @@ ARTICLE: "syntax-ratios" "Ratio syntax"
"More information on ratios can be found in " { $link "rationals" } ;
ARTICLE: "syntax-floats" "Float syntax"
"Floating point literals must contain a decimal point, and may contain an exponent:"
"Floating point literals can be input in base 10 or 16. Base 10 literals must contain a decimal point, and may contain an exponent after " { $snippet "e" } ":"
{ $code
"10.5"
"-3.1456"
"7.e13"
"1.0e-5"
}
"There are three special float values:"
"Base 16 literals use " { $snippet "p" } " instead of " { $snippet "e" } " for the exponent, which is still decimal:"
{ $example
"10.125 HEX: 1.44p3 = ."
"t"
}
"Syntax for special float values:"
{ $table
{ "Positive infinity" { $snippet "1/0." } }
{ "Negative infinity" { $snippet "-1/0." } }
{ "Not-a-number" { $snippet "0/0." } }
}
"A Not-a-number with an arbitrary payload can be parsed in:"
"A Not-a-number with an arbitrary payload can also be parsed in:"
{ $subsection POSTPONE: NAN: }
"More information on floats can be found in " { $link "floats" } "." ;
@ -612,8 +617,8 @@ HELP: NAN:
{ $examples
{ $example
"USE: prettyprint"
"NAN: deadbeef ."
"NAN: deadbeef"
"NAN: 80000deadbeef ."
"NAN: 80000deadbeef"
}
} ;