sparql.tmLanguage.JSON

// I found an ANTLR grammar for SPARQL so I've been through that once but I
// didn't try to catch every last case. The file test.rq explains some of
// the scenarios.
// http://www.antlr3.org/grammar/1200929755392/Sparql.g
//
// Also I made a bit of an aesthetic distinction between keywords and functions
// in some cases. Hopefully it's a good balance between distinguisability and
// conformance to the offical syntax but I'm open to alterations.
{
	"name": "SPARQL",
	"uuid": "5a91f9b9-c324-40e6-8bd2-ed959b3adda9",
 	"scopeName": "source.sparql",
 	"fileTypes": ["rq"],
 	"patterns": [
 		{
			"name": 	"keyword.sparql",
  			"comment": 	"Keywords",
 			"match": 	"\\b(?i:base|prefix|select|distinct|reduced|from|named|construct|ask|describe|where|graph|bind|as|filter|optional|union|order|by|limit|offset|values|insert data|delete data|with|delete|insert|clear|silent|default|all|create|drop|copy|move|add|to|using|service|not exists|exists|not in|in|minus)\\b",
		},
		{
			"name": 	"support.function.sparql",
			"comment":	"SPARQL built-in functions",
			// I included `separator` here, which is a keyword argument to `group_concat`
			"match":	"\\b(?i:concat|regex|asc|desc|bound|isiri|isuri|isblank|isliteral|str|lang|datatype|sameterm|langmatches|avg|count|group_concat|separator|max|min|sample|sum|iri|bnode|strdt|uuid|struuid|strlen|strlen|strlen|substr|ucase|lcase|strstarts|strends|contains|strbefore|strafter|encode_for_uri|replace|abs|round|ceil|floor|rand|now|year|month|day|hours|minutes|seconds|timezone|tz|md5|sha1|sha256|sha384|sha512|coalesce|if|)\\b"
		},
		{
			"name": 	"string.uri.sparql",
			"comment": 	"URI",
			// Best attempt to convert IRI_REF:
			// http://www.w3.org/TR/rdf-sparql-query/#rIRI_REF
			"match": 	"<[^<>\"{}|^`\\]\\\\]*>",
		},
		{
			"name": 	"constant.complex.sparql",
			"comment": 	"Prefix / prefixed URI",
			// PN_CHARS_BASE is insane
			// http://www.w3.org/TR/rdf-sparql-query/#rPN_CHARS_BASE
			"match": 	"(\\w*:)([^\\s|/^*?+{}()]*)",
	        "captures": {
	            "1": { "name": "constant.other.sparql" },
	            "2": { "name": "entity.name.class.sparql" }
	         }
		},
		{
			"name":		"entity.name.class.rdfs-type.sparql",
			"comment":	"The special triple predicate 'a'",
			"match":    "\\sa\\s"
		},
		{
			"name": "variable.other.sparql",
			"match": "(?<!\\w)[?$]\\w+"
		},
		{
			"name": 	"literal.sparql",
			"comment": 	"Typed literal",
			// Note duplication of IRI_REF
			"match":	"(\"[^\"]*\")(\\^\\^)(<[^<>\"{}|^`\\]\\\\]*>|\\w*:[^\\s)]+)",
			"captures":   {
				"1": { "name": "string.sparql" },
				"2": { "name": "keyword.operator.sparql" },
				"3": { "name": "support.type.sparql" }
			}
		},
		{
			"name": 	"string.sparql",
			"comment": 	"String literal",
			// This is an attempt to implement the following BNF combinations:
			// STRING_LITERAL_LONG1 | STRING_LITERAL_LONG2 | STRING_LITERAL1 | STRING_LITERAL2
			// Creating an incorrectly highlighted example of a triple-quoted string
			// turned out to be really hard, so I can't promise the first two options
			// are correct!
			"match":	"('''(?:(?:'|'')?(?:[^'\\\\]|\\\\[tbnrf\\\"']))*'''|\"\"\"(?:(?:\"|\"\")?([^\"\\\\]|\\\\[tbnrf\\\"']))*\"\"\"|'(?:(?:[^\\x22\\x5C\\xA\\xD])|\\\\[tbnrf\\\"'])*'|\"(?:(?:[^\\x22\\x5C\\xA\\xD])|\\\\[tbnrf\\\"'])*\"|'''.*'''|'[^']*')(@[a-zA-Z-]+)?",
			"captures":   {
				"1": { "name": "string.sparql" },
				"2": { "name": "keyword.operator.sparql" },
				"3": { "name": "support.type.sparql" }
			}
		},
		{
			"name":		"keyword.operator.range.complex.sparql",
			"match": 	"\\{\\s*(\\d+)?(\\s*(?:,\\s*(\\d+)?)?)+\\s*\\}",
			"captures":	{
				"1": { "name": "constant.numeric.sparql" },
				"3": { "name": "constant.numeric.sparql" }
			}
		},
		{
			"name":		"constant.numeric.sparql",
			"comment":  "Numeric literal",
			"match": 	"\\b[+-]?(?:\\d+|[0-9]+\\.[0-9]*|\\.[0-9]+(?:[eE][+-]?\\d+)?)\\b"
		},
		{
			"name":		"constant.language.sparql",
			"comment":  "Boolean",
			"match":	"\\b(?i:true|false)\\b"
		},
		{
			"name":		"keyword.operator.sparql",
			"comment":	"SPARQL operators",
			"match":	"(?:\\|\\||&&|=|!=|<|>|<=|>=|\\*|/|\\+|-|\\||\\^|\\?|\\!)"
		},
		{
			"name":		"comment.line.number-sign.sparql",
			"comment":	"Comments",
			"match":	"#.*$"
		}
	]
}