Parse "prefix", "base", and "graph" prefixes.

Author: RubenVerborgh

lib/N3Lexer.js

@@ -59,8 +59,8 @@ N3Lexer.prototype = {
   _blank: /^_:((?:[0-9A-Z_a-z\xc0-\xd6\xd8-\xf6\xf8-\u02ff\u0370-\u037d\u037f-\u1fff\u200c\u200d\u2070-\u218f\u2c00-\u2fef\u3001-\ud7ff\uf900-\ufdcf\ufdf0-\ufffd]|[\ud800-\udb7f][\udc00-\udfff])(?:\.?[\-0-9A-Z_a-z\xb7\xc0-\xd6\xd8-\xf6\xf8-\u037d\u037f-\u1fff\u200c\u200d\u203f\u2040\u2070-\u218f\u2c00-\u2fef\u3001-\ud7ff\uf900-\ufdcf\ufdf0-\ufffd]|[\ud800-\udb7f][\udc00-\udfff])*)(?:[ \t]+|(?=\.?[,;:\s#()\[\]\{\}"'<]))/,
   _number: /^[\-+]?(?:\d+\.?\d*([eE](?:[\-\+])?\d+)|\d*\.?\d+)(?=[.,;:\s#()\[\]\{\}"'<])/,
   _boolean: /^(?:true|false)(?=[.,;\s#()\[\]\{\}"'<])/,
-  _keyword: /^@[a-z]+(?=[\s#<:])/i,
-  _sparqlKeyword: /^(?:PREFIX|BASE|GRAPH)(?=[\s#<:])/i,
+  _keyword: /^@[a-z]+(?=[\s#<])/i,
+  _sparqlKeyword: /^(?:PREFIX|BASE|GRAPH)(?=[\s#<])/i,
   _shortPredicates: /^a(?=\s+|<)/,
   _newline: /^[ \t]*(?:#[^\n\r]*)?(?:\r\n|\n|\r)[ \t]*/,
   _comment: /#([^\n\r]*)/,

test/N3Parser-test.js

@@ -91,6 +91,21 @@ describe('N3Parser', function () {
                   ':x a:a a:b.',
                   ['#x', 'a#a', 'a#b']));
 
+    it('should parse triples with the prefix "prefix"',
+      shouldParse('@prefix prefix: <http://prefix.cc/>.' +
+                  'prefix:a prefix:b prefix:c.',
+                  ['http://prefix.cc/a', 'http://prefix.cc/b', 'http://prefix.cc/c']));
+
+    it('should parse triples with the prefix "base"',
+      shouldParse('PREFIX base: <http://prefix.cc/>' +
+                  'base:a base:b base:c.',
+                  ['http://prefix.cc/a', 'http://prefix.cc/b', 'http://prefix.cc/c']));
+
+    it('should parse triples with the prefix "graph"',
+      shouldParse('PREFIX graph: <http://prefix.cc/>' +
+                  'graph:a graph:b graph:c.',
+                  ['http://prefix.cc/a', 'http://prefix.cc/b', 'http://prefix.cc/c']));
+
     it('should not parse @PREFIX',
       shouldNotParse('@PREFIX : <#>.',
                      'Expected entity but got @PREFIX on line 1.'));