Add syntax tests for codepoint escaping.

Author: kasei

sparql/sparql12/manifest.ttl

@@ -33,6 +33,7 @@ trs:manifest  rdf:type mf:Manifest ;
   """;
   mf:include (
     <grouping/manifest.ttl>
+    <syntax-escaping/manifest.ttl>
     <syntax-triple-terms-negative/manifest.ttl>
     <syntax-triple-terms-positive/manifest.ttl>
   ) .

sparql/sparql12/syntax-escaping/codepoint-esc-01.rq

@@ -0,0 +1,7 @@
+SELECT * WHERE {
+	?s ?p "\\u000Z"
+}
+
+# \u000Z is an invalid escape sequence. It should either: be left as-is
+# as it does not match the escape syntax of `\u HEX HEX HEX HEX`; or
+# seen as a syntax error.

sparql/sparql12/syntax-escaping/codepoint-esc-02.rq

@@ -0,0 +1,8 @@
+PREFIX ns: <http://example.org/>
+SELECT * WHERE {
+	?s ?p ns:id\u005c=123
+}
+
+# the escape here produces '\' REVERSE SOLIDUS (U+5C)
+# its unescaping must lead to a Prefixed Name ns:id\=123 using an escaped
+# equals sign (U+3D), representing the IRI <http://example.org/id=123>.

sparql/sparql12/syntax-escaping/codepoint-esc-03.rq

@@ -0,0 +1,5 @@
+SELECT * WHERE {
+	?s ?p "\\u0041"
+}
+# Legal codepoint escape of LATIN CAPITAL LETTER A (U+41), resulting in an
+# invalid backslash escape \A.

sparql/sparql12/syntax-escaping/codepoint-esc-04.rq

@@ -0,0 +1,5 @@
+SELECT * WHERE {
+	?s ?p "\\u0074"
+}
+# Legal codepoint escape of LATIN SMALL LETTER T (U+74), resulting in a
+# valid backslash escape \t for CHARACTER TABULATION (U+9).

sparql/sparql12/syntax-escaping/codepoint-esc-05.rq

@@ -0,0 +1,5 @@
+SELECT * WHERE {
+	?s ?p "\u005C\u005Cn"
+}
+# Two legal codepoint escapes of REVERSE SOLIDUS (U+5C), resulting in a
+# valid backslash escape \\ for REVERSE SOLIDUS (U+5C) followed by 'n'.

sparql/sparql12/syntax-escaping/codepoint-esc-06.rq

@@ -0,0 +1,8 @@
+PREFIX og: <http://ogp.me/ns#>
+SELECT * WHERE {
+	?page og:audio\u00253Atitle ?title
+}
+
+# the escape here produces '%' PERCENT SIGN (U+25)
+# its unescaping must lead to a Prefixed Name og:audio%3Atitle which includes
+# the percent-encoding %3A (COLON).

sparql/sparql12/syntax-escaping/codepoint-esc-07.rq

@@ -0,0 +1,7 @@
+SELECT\u0020*\U00000009WHERE {
+	?s ?p "value"
+}
+
+# the escapes here produce whitespace -- SPACESPACE (U+20) and
+# CHARACTER TABULATION (U+9) -- surrounding the `*` token in the
+# SELECT projection.

sparql/sparql12/syntax-escaping/codepoint-esc-08.rq

@@ -0,0 +1,6 @@
+SELECT * WHERE {
+	?s ?p \u0022value"
+}
+
+# the escape here produces QUOTATION MARK (U+22)
+# its unescaping must lead to the literal 'value'.

sparql/sparql12/syntax-escaping/codepoint-esc-09.rq

@@ -0,0 +1,3 @@
+\u0041\u0053\u004B\u0020\u007B\u007D
+
+# The query `ASK {}` entirely encoded using codepoint escapes.