Parse a without whitespace.

Fixes #169.
rdfjs · Mar 25, 2019 · e993d2a · e993d2a
1 parent b3e8d7c
commit e993d2a
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diff --git a/lib/N3Lexer.js b/lib/N3Lexer.js
@@ -53,7 +53,7 @@ class N3Lexer {
     this._boolean = /^(?:true|false)(?=[.,;\s#()\[\]\{\}"'<])/;
     this._keyword = /^@[a-z]+(?=[\s#<:])/i;
     this._sparqlKeyword = /^(?:PREFIX|BASE|GRAPH)(?=[\s#<])/i;
-    this._shortPredicates = /^a(?=\s+|<)/;
+    this._shortPredicates = /^a(?=[\s()\[\]\{\}"'<])/;
     this._newline = /^[ \t]*(?:#[^\n\r]*)?(?:\r\n|\n|\r)[ \t]*/;
     this._comment = /#([^\n\r]*)/;
     this._whitespace = /^[ \t]+/;

diff --git a/test/N3Lexer-test.js b/test/N3Lexer-test.js
@@ -626,6 +626,41 @@ describe('N3Lexer', function () {
                      { type: '.', line: 1 },
                      { type: 'eof', line: 1 }));
 
+    it('should tokenize the "a" predicate without spacing',
+      shouldTokenize('[a<>].\n[a[]].\n[a()].\n<>a<>.\n<>a[].\n<>a().\n',
+                     { type: '[', line: 1 },
+                     { type: 'abbreviation', value: 'a', line: 1 },
+                     { type: 'IRI', line: 1 },
+                     { type: ']', line: 1 },
+                     { type: '.', line: 1 },
+                     { type: '[', line: 2 },
+                     { type: 'abbreviation', value: 'a', line: 2 },
+                     { type: '[', line: 2 },
+                     { type: ']', line: 2 },
+                     { type: ']', line: 2 },
+                     { type: '.', line: 2 },
+                     { type: '[', line: 3 },
+                     { type: 'abbreviation', value: 'a', line: 3 },
+                     { type: '(', line: 3 },
+                     { type: ')', line: 3 },
+                     { type: ']', line: 3 },
+                     { type: '.', line: 3 },
+                     { type: 'IRI', line: 4 },
+                     { type: 'abbreviation', value: 'a', line: 4 },
+                     { type: 'IRI', line: 4 },
+                     { type: '.', line: 4 },
+                     { type: 'IRI', line: 5 },
+                     { type: 'abbreviation', value: 'a', line: 5 },
+                     { type: '[', line: 5 },
+                     { type: ']', line: 5 },
+                     { type: '.', line: 5 },
+                     { type: 'IRI', line: 6 },
+                     { type: 'abbreviation', value: 'a', line: 6 },
+                     { type: '(', line: 6 },
+                     { type: ')', line: 6 },
+                     { type: '.', line: 6 },
+                     { type: 'eof', line: 7 }));
+
     it('should tokenize an empty default graph',
       shouldTokenize('{}',
                      { type: '{', line: 1 },