Added GraphQL improvements and tests (#1788)

This makes some improvements to GraphQL and expands the existing tests.

components/prism-graphql.js

@@ -11,14 +11,21 @@ Prism.languages.graphql = {
 		pattern: /@[a-z_]\w*/i,
 		alias: 'function'
 	},
-	'attr-name': /[a-z_]\w*(?=\s*(?:\([^()]*\))?:)/i,
-	'keyword': [
-		{
-			pattern: /(fragment\s+(?!on)[a-z_]\w*\s+|\.{3}\s*)on\b/,
-			lookbehind: true
-		},
-		/\b(?:query|fragment|mutation)\b/
-	],
-	'operator': /!|=|\.{3}/,
-	'punctuation': /[!(){}\[\]:=,]/
+	'attr-name': {
+		pattern: /[a-z_]\w*(?=\s*(?:\((?:[^()"]|"(?:\\.|[^\\"\r\n])*")*\))?:)/i,
+		greedy: true
+	},
+	'class-name': {
+		pattern: /(\b(?:enum|implements|interface|on|scalar|type|union)\s+)[a-zA-Z_]\w*/,
+		lookbehind: true
+	},
+	'fragment': {
+		pattern: /(\bfragment\s+|\.{3}\s*(?!on\b))[a-zA-Z_]\w*/,
+		lookbehind: true,
+		alias: 'function'
+	},
+	'keyword': /\b(?:enum|fragment|implements|input|interface|mutation|on|query|scalar|schema|type|union)\b/,
+	'operator': /[!=|]|\.{3}/,
+	'punctuation': /[!(){}\[\]:=,]/,
+	'constant': /\b(?!ID\b)[A-Z][A-Z_\d]*\b/
 };

tests/languages/graphql/attr-name_feature.test

@@ -2,12 +2,14 @@
 	zuck: user(id: 4) {
 		name
 	}
+	foo(bar: Int = 0, baz: String = "("): [Int!]!
 }
 
 ----------------------------------------------------
 
 [
 	["punctuation", "{"],
+
 	["attr-name", "zuck"],
 	["punctuation", ":"],
 	" user",
@@ -19,6 +21,28 @@
 	["punctuation", "{"],
 	"\r\n\t\tname\r\n\t",
 	["punctuation", "}"],
+
+	["attr-name", "foo"],
+	["punctuation", "("],
+	["attr-name", "bar"],
+	["punctuation", ":"],
+	" Int ",
+	["operator", "="],
+	["number", "0"],
+	["punctuation", ","],
+	["attr-name", "baz"],
+	["punctuation", ":"],
+	" String ",
+	["operator", "="],
+	["string", "\"(\""],
+	["punctuation", ")"],
+	["punctuation", ":"],
+	["punctuation", "["],
+	"Int",
+	["operator", "!"],
+	["punctuation", "]"],
+	["operator", "!"],
+
 	["punctuation", "}"]
 ]
 

tests/languages/graphql/class-name_feature.test

@@ -0,0 +1,48 @@
+interface Foo {}
+type Foo {}
+type Foo implements Bar {}
+enum Foo {}
+scalar Foo
+union Foo
+on Foo {}
+
+----------------------------------------------------
+
+[
+	["keyword", "interface"],
+	["class-name", "Foo"],
+	["punctuation", "{"],
+	["punctuation", "}"],
+
+	["keyword", "type"],
+	["class-name", "Foo"],
+	["punctuation", "{"],
+	["punctuation", "}"],
+
+	["keyword", "type"],
+	["class-name", "Foo"],
+	["keyword", "implements"],
+	["class-name", "Bar"],
+	["punctuation", "{"],
+	["punctuation", "}"],
+
+	["keyword", "enum"],
+	["class-name", "Foo"],
+	["punctuation", "{"],
+	["punctuation", "}"],
+
+	["keyword", "scalar"],
+	["class-name", "Foo"],
+
+	["keyword", "union"],
+	["class-name", "Foo"],
+
+	["keyword", "on"],
+	["class-name", "Foo"],
+	["punctuation", "{"],
+	["punctuation", "}"]
+]
+
+----------------------------------------------------
+
+Checks for class names.

tests/languages/graphql/constant_feature.test

@@ -0,0 +1,39 @@
+enum Color {
+	RED
+	GREEN
+	BLUE
+}
+
+{
+	foo(bar: RED) {
+		baz
+	}
+}
+
+----------------------------------------------------
+
+[
+	["keyword", "enum"],
+	["class-name", "Color"],
+	["punctuation", "{"],
+	["constant", "RED"],
+	["constant", "GREEN"],
+	["constant", "BLUE"],
+	["punctuation", "}"],
+
+	["punctuation", "{"],
+	"\n\tfoo",
+	["punctuation", "("],
+	["attr-name", "bar"],
+	["punctuation", ":"],
+	["constant", "RED"],
+	["punctuation", ")"],
+	["punctuation", "{"],
+	"\n\t\tbaz\n\t",
+	["punctuation", "}"],
+	["punctuation", "}"]
+]
+
+----------------------------------------------------
+
+Checks for constants.

tests/languages/graphql/fragment_feature.test

@@ -0,0 +1,29 @@
+{
+	...frag
+}
+
+fragment frag on FooBar {
+	foo
+	bar
+}
+
+----------------------------------------------------
+
+[
+	["punctuation", "{"],
+	["operator", "..."],
+	["fragment", "frag"],
+	["punctuation", "}"],
+
+	["keyword", "fragment"],
+	["fragment", "frag"],
+	["keyword", "on"],
+	["class-name", "FooBar"],
+	["punctuation", "{"],
+	"\r\n\tfoo\r\n\tbar\r\n",
+	["punctuation", "}"]
+]
+
+----------------------------------------------------
+
+Checks for fragments.

tests/languages/graphql/keyword_feature.test

@@ -1,22 +1,31 @@
-query
+enum
 fragment
+implements
+input
+interface
 mutation
-fragment foo on Bar
-... on Foo
+on
+query
+scalar
+schema
+type
+union
 
 ----------------------------------------------------
 
 [
-	["keyword", "query"],
-	["keyword", "fragment"],
-	["keyword", "mutation"],
-	["keyword", "fragment"],
-	" foo ",
-	["keyword", "on"],
-	" Bar\r\n",
-	["operator", "..."],
+	["keyword", "enum"],
+	["class-name", "fragment"],
+	["keyword", "implements"],
+	["class-name", "input"],
+	["keyword", "interface"],
+	["class-name", "mutation"],
 	["keyword", "on"],
-	" Foo"
+	["class-name", "query"],
+	["keyword", "scalar"],
+	["class-name", "schema"],
+	["keyword", "type"],
+	["class-name", "union"]
 ]
 
 ----------------------------------------------------

tests/languages/graphql/operator_feature.test

@@ -0,0 +1,15 @@
+= ! |
+...
+
+----------------------------------------------------
+
+[
+	["operator", "="],
+	["operator", "!"],
+	["operator", "|"],
+	["operator", "..."]
+]
+
+----------------------------------------------------
+
+Checks for operators.