Added lexars

lexers/testdata/cue.actual

@@ -0,0 +1,56 @@
+"this is a test"
+5
+false
+
+// This is a comment
+a: {
+    foo:      string  // foo is a string
+    [=~"^i"]: int     // all other fields starting with i are integers
+    [=~"^b"]: bool    // all other fields starting with b are booleans
+    [>"c"]:   string  // all other fields lexically after c are strings
+
+    ...string         // all other fields must be a string. Note: default constraints are not yet implemented.
+}
+
+x: #"""
+
+ \#(test)
+
+"""
+
+b: a & {
+    i3:    3
+    bar:   true
+    other: "a string"
+}
+
+A: close({
+    field1: string
+    field2: string
+})
+
+// Verify that various field types work
+_hidden: int
+regular: int
+$id: int
+#definition: int
+
+@protobuf(proto3)
+
+myStruct1: {
+    // Struct attribute:
+    @jsonschema(id="https://example.org/mystruct1.json")
+
+    // Field attributes
+    field: string @go(Field)
+    attr:  int    @xml(,attr) @go(Attr)
+}
+
+myStruct2: {
+    field: string @go(Field)
+    attr:  int    @xml(a1,attr) @go(Attr)
+}
+
+Combined: myStruct1 & myStruct2
+// field: string @go(Field)
+// attr:  int    @xml(,attr) @xml(a1,attr) @go(Attr)