Add URDNA2015 test manifest-urdna2015#test059 and fix bnode regex.

Author: kazarena

ld/serialize_nquads.go

@@ -132,9 +132,47 @@ func escape(str string) string {
 }
 
 const (
-	wso      = "[ \\t]*"
-	iri      = "(?:<([^>]*)>)"
-	bnode    = "(_:(?:[A-Za-z][A-Za-z0-9]*))"
+	wso = "[ \\t]*"
+	iri = "(?:<([^:]+:[^>]*)>)"
+
+	// https://www.w3.org/TR/turtle/#grammar-production-BLANK_NODE_LABEL
+
+	pnCharsBase = "A-Z" + "a-z" +
+		"\u00C0-\u00D6" +
+		"\u00D8-\u00F6" +
+		"\u00F8-\u02FF" +
+		"\u0370-\u037D" +
+		"\u037F-\u1FFF" +
+		"\u200C-\u200D" +
+		"\u2070-\u218F" +
+		"\u2C00-\u2FEF" +
+		"\u3001-\uD7FF" +
+		"\uF900-\uFDCF" +
+		"\uFDF0-\uFFFD"
+		// TODO:
+		//"\u10000-\uEFFFF"
+
+	pnCharsU = pnCharsBase + "_"
+
+	pnChars = pnCharsU +
+		"0-9" +
+		"-" +
+		"\u00B7" +
+		"\u0300-\u036F" +
+		"\u203F-\u2040"
+
+	blankNodeLabel = "(_:" +
+		"(?:[" + pnCharsU + "0-9])" +
+		"(?:(?:[" + pnChars + ".])*(?:[" + pnChars + "]))?" +
+		")"
+
+		//   '(_:' +
+		//     '(?:[' + PN_CHARS_U + '0-9])' +
+		//     '(?:(?:[' + PN_CHARS + '.])*(?:[' + PN_CHARS + ']))?' +
+		//   ')';
+
+	bnode = blankNodeLabel
+
 	plain    = "\"([^\"\\\\]*(?:\\\\.[^\"\\\\]*)*)\""
 	datatype = "(?:\\^\\^" + iri + ")"
 	language = "(?:@([a-z]+(?:-[a-zA-Z0-9]+)*))"

ld/testdata/test059-in.nq

@@ -0,0 +1,8 @@
+<urn:ex:s> <urn:ex:p> <urn:ex:o> <urn:ex:g> .
+_:s <urn:ex:p> _:o _:g .
+_:s_ <urn:ex:p> _:o_ _:g_ .
+_:s_s <urn:ex:p> _:o_o _:g_g .
+_:s0 <urn:ex:p> _:o0 _:g0 .
+_:0s <urn:ex:p> _:0o _:0g .
+_:s-0 <urn:ex:p> _:o-0 _:g-0 .
+_:_ <urn:ex:p> <urn:ex:o> <urn:ex:g> .

ld/testdata/test059-urdna2015.nq

@@ -0,0 +1,8 @@
+<urn:ex:s> <urn:ex:p> <urn:ex:o> <urn:ex:g> .
+_:c14n0 <urn:ex:p> <urn:ex:o> <urn:ex:g> .
+_:c14n1 <urn:ex:p> _:c14n3 _:c14n2 .
+_:c14n10 <urn:ex:p> _:c14n12 _:c14n11 .
+_:c14n13 <urn:ex:p> _:c14n15 _:c14n14 .
+_:c14n16 <urn:ex:p> _:c14n18 _:c14n17 .
+_:c14n4 <urn:ex:p> _:c14n6 _:c14n5 .
+_:c14n7 <urn:ex:p> _:c14n9 _:c14n8 .

ld/testdata/urdna2015-manifest.jsonld

@@ -555,6 +555,15 @@
       "approval": "rdft:Proposed",
       "action": "test058-in.nq",
       "result": "test058-urdna2015.nq"
+    },
+    {
+      "id": "manifest-urdna2015#test059",
+      "type": "rdfn:Urdna2015EvalTest",
+      "name": "n-quads parsing",
+      "comment": null,
+      "approval": "rdft:Proposed",
+      "action": "test059-in.nq",
+      "result": "test059-urdna2015.nq"
     }
   ]
 }