unmaintained: New home for misfit Factor vocabularies.

[factor-unmaintained.git] / modules / using / using.factor

diff --git a/modules/using/using.factor b/modules/using/using.factor
new file mode 100644 (file)
index 0000000..acf3471
--- /dev/null
+++ b/modules/using/using.factor
@@ -0,0 +1,28 @@
+! Copyright (C) 2009 Sam Anklesaria.
+! See http://factorcode.org/license.txt for BSD license.
+USING: kernel modules.rpc peg peg-lexer peg.ebnf sequences
+strings vocabs.parser ;
+IN: modules.using
+
+EBNF: modulize
+tokenpart = (!(':').)+ => [[ >string ]]
+s = ':' => [[ drop ignore ]]
+rpc = tokenpart s s tokenpart => [[ first2 remote-vocab ]]
+remote = tokenpart s tokenpart => [[ first2 remote-load ]]
+module = rpc | remote | tokenpart
+;EBNF
+
+ON-BNF: USING*:
+tokenizer = <foreign factor>
+sym = !(";"|"}"|"=>"|"EXCEPT").
+modspec = sym => [[ modulize ]]
+qualified-with = modspec sym => [[ first2 add-qualified ignore ]]
+qualified = modspec => [[ dup add-qualified ignore ]]
+from = modspec "=>" sym+ => [[ first3 nip add-words-from ignore ]]
+exclude = modspec "EXCEPT" sym+ => [[ first3 nip add-words-excluding ignore ]]
+rename = modspec sym "=>" sym => [[ first4 nip swapd add-renamed-word ignore ]]
+long = "{" ( from | exclude | rename | qualified-with | qualified ) "}" => [[ drop ignore ]]
+short = modspec => [[ use-vocab ignore ]]
+wordSpec = long | short
+using = wordSpec+ ";" => [[ drop ignore ]]
+;ON-BNF