Merge branch 'master' of git://factorcode.org/git/factor
commit
5dfd1c70f0
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@ -1,14 +1,15 @@
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! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel combinators alien alien.strings alien.syntax
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prettyprint.backend prettyprint.custom prettyprint.sections ;
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math.parser prettyprint.backend prettyprint.custom
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prettyprint.sections ;
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IN: alien.prettyprint
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M: alien pprint*
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{
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{ [ dup expired? ] [ drop \ BAD-ALIEN pprint-word ] }
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{ [ dup pinned-c-ptr? not ] [ drop "( displaced alien )" text ] }
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[ \ ALIEN: [ alien-address pprint* ] pprint-prefix ]
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[ \ ALIEN: [ alien-address >hex text ] pprint-prefix ]
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} cond ;
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M: dll pprint* dll-path dup "DLL\" " "\"" pprint-string ;
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@ -9,7 +9,7 @@ HELP: DLL"
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HELP: ALIEN:
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{ $syntax "ALIEN: address" }
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{ $values { "address" "a non-negative integer" } }
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{ $values { "address" "a non-negative hexadecimal integer" } }
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{ $description "Creates an alien object at parse time." }
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{ $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
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SYNTAX: DLL" lexer get skip-blank parse-string dlopen parsed ;
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SYNTAX: ALIEN: scan string>number <alien> parsed ;
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SYNTAX: ALIEN: 16 scan-base <alien> parsed ;
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SYNTAX: BAD-ALIEN <bad-alien> parsed ;
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@ -472,15 +472,15 @@ cell 8 = [
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] unit-test
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[ ALIEN: 123 ] [
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123 [ <alien> ] compile-call
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HEX: 123 [ <alien> ] compile-call
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] unit-test
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[ ALIEN: 123 ] [
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123 [ { fixnum } declare <alien> ] compile-call
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HEX: 123 [ { fixnum } declare <alien> ] compile-call
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] unit-test
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[ ALIEN: 123 ] [
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[ 123 <alien> ] compile-call
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[ HEX: 123 <alien> ] compile-call
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] unit-test
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[ f ] [
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@ -522,8 +522,8 @@ cell 8 = [
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[ ALIEN: 1234 ALIEN: 2234 ] [
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ALIEN: 234 [
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{ c-ptr } declare
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[ 1000 swap <displaced-alien> ]
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[ 2000 swap <displaced-alien> ] bi
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[ HEX: 1000 swap <displaced-alien> ]
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[ HEX: 2000 swap <displaced-alien> ] bi
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] compile-call
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] unit-test
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@ -49,6 +49,6 @@ M: openbsd statvfs>file-system-info ( file-system-info statvfs -- file-system-in
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M: openbsd file-systems ( -- seq )
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f 0 0 getfsstat dup io-error
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<statvfs-array>
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<statfs-array>
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[ dup byte-length 0 getfsstat io-error ]
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[ [ f_mntonname>> utf8 alien>string file-system-info ] { } map-as ] bi ;
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@ -55,7 +55,7 @@ cell 8 = [
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] unit-test
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] when
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[ "ALIEN: 1234" ] [ 1234 <alien> unparse ] unit-test
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[ "ALIEN: 1234" ] [ HEX: 1234 <alien> unparse ] unit-test
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[ ] [ 0 B{ 1 2 3 } <displaced-alien> drop ] unit-test
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@ -282,12 +282,12 @@ HELP: fp-bitwise=
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{ $examples
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"Not-a-number equality:"
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{ $example
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"USING: math prettyprint ;"
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"USING: kernel math prettyprint ;"
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"0.0 0.0 / dup number= ."
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"f"
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}
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{ $example
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"USING: math prettyprint ;"
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"USING: kernel math prettyprint ;"
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"0.0 0.0 / dup fp-bitwise= ."
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"t"
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}
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@ -299,7 +299,7 @@ HELP: fp-bitwise=
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}
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{ $example
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"USING: math prettyprint ;"
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"-0.0 0.0 = ."
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"-0.0 0.0 number= ."
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"t"
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}
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} ;
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@ -5,7 +5,7 @@ IN: math.parser
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ARTICLE: "number-strings" "Converting between numbers and strings"
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"These words only convert between real numbers and strings. Complex numbers are constructed by the parser (" { $link "parser" } ") and printed by the prettyprinter (" { $link "prettyprint" } ")."
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$nl
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"Note that only integers can be converted to and from strings using a representation other than base 10. Calling a word such as " { $link >oct } " on a float will give a result in base 10."
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"Integers can be converted to and from arbitrary bases. Floating point numbers can only be converted to and from base 10 and 16."
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$nl
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"Converting numbers to strings:"
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{ $subsection number>string }
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@ -93,7 +93,19 @@ HELP: >oct
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HELP: >hex
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{ $values { "n" real } { "str" string } }
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{ $description "Outputs a string representation of a number using base 16." } ;
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{ $description "Outputs a string representation of a number using base 16." }
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{ $examples
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{ $example
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"USING: math.parser prettyprint ;"
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"3735928559 >hex ."
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"\"deadbeef\""
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}
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{ $example
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"USING: math.parser prettyprint ;"
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"-15.5 >hex ."
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"\"-f.8p0\""
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}
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} ;
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HELP: string>float ( str -- n/f )
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{ $values { "str" string } { "n/f" "a real number or " { $link f } } }
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@ -59,20 +59,25 @@ ARTICLE: "syntax-ratios" "Ratio syntax"
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"More information on ratios can be found in " { $link "rationals" } ;
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ARTICLE: "syntax-floats" "Float syntax"
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"Floating point literals must contain a decimal point, and may contain an exponent:"
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"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" } ":"
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{ $code
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"10.5"
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"-3.1456"
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"7.e13"
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"1.0e-5"
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}
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"There are three special float values:"
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"Base 16 literals use " { $snippet "p" } " instead of " { $snippet "e" } " for the exponent, which is still decimal:"
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{ $example
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"10.125 HEX: 1.44p3 = ."
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"t"
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}
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"Syntax for special float values:"
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{ $table
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{ "Positive infinity" { $snippet "1/0." } }
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{ "Negative infinity" { $snippet "-1/0." } }
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{ "Not-a-number" { $snippet "0/0." } }
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}
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"A Not-a-number with an arbitrary payload can be parsed in:"
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"A Not-a-number with an arbitrary payload can also be parsed in:"
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{ $subsection POSTPONE: NAN: }
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"More information on floats can be found in " { $link "floats" } "." ;
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{ $examples
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{ $example
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"USE: prettyprint"
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"NAN: deadbeef ."
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"NAN: deadbeef"
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"NAN: 80000deadbeef ."
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"NAN: 80000deadbeef"
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}
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} ;
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Reference in New Issue