feat: initial commit

vendor/sourcery.dny.nu/longdistance/keywords.go

@@ -0,0 +1,96 @@
+package longdistance
+
+// JSON-LD keywords.
+const (
+	KeywordAny       = "@any"
+	KeywordBase      = "@base"
+	KeywordContainer = "@container"
+	KeywordContext   = "@context"
+	KeywordDefault   = "@default"
+	KeywordDirection = "@direction"
+	KeywordGraph     = "@graph"
+	KeywordID        = "@id"
+	KeywordImport    = "@import"
+	KeywordIncluded  = "@included"
+	KeywordIndex     = "@index"
+	KeywordJSON      = "@json"
+	KeywordLanguage  = "@language"
+	KeywordList      = "@list"
+	KeywordNest      = "@nest"
+	KeywordNone      = "@none"
+	KeywordNull      = "@null"
+	KeywordPrefix    = "@prefix"
+	KeywordPreserve  = "@preserve"
+	KeywordPropagate = "@propagate"
+	KeywordProtected = "@protected"
+	KeywordReverse   = "@reverse"
+	KeywordSet       = "@set"
+	KeywordType      = "@type"
+	KeywordValue     = "@value"
+	KeywordVersion   = "@version"
+	KeywordVocab     = "@vocab"
+)
+
+// isKeyword returns if the string matches a known JSON-LD keyword.
+func isKeyword(s string) bool {
+	switch s {
+	case KeywordBase,
+		KeywordContainer,
+		KeywordContext,
+		KeywordDefault,
+		KeywordDirection,
+		KeywordGraph,
+		KeywordID,
+		KeywordImport,
+		KeywordIncluded,
+		KeywordIndex,
+		KeywordJSON,
+		KeywordLanguage,
+		KeywordList,
+		KeywordNest,
+		KeywordNone,
+		KeywordPrefix,
+		KeywordPreserve,
+		KeywordPropagate,
+		KeywordProtected,
+		KeywordReverse,
+		KeywordSet,
+		KeywordType,
+		KeywordValue,
+		KeywordVersion,
+		KeywordVocab:
+		return true
+	default:
+		return false
+	}
+}
+
+// looksLikeKeyword determines if a string has the general shape of a JSON-LD
+// keyword.
+//
+// It returns true for strings of the form: "@[alpha]".
+//
+// This means that a string like @blabla1 will return false, but it's still
+// strongly recommended against using those for keys just to avoid confusion.
+func looksLikeKeyword(s string) bool {
+	if s == "" {
+		return false
+	}
+
+	if s == "@" {
+		return false
+	}
+
+	if s[0] != '@' {
+		return false
+	}
+
+	for _, char := range s[1:] {
+		if (char < 'a' || char > 'z') &&
+			(char < 'A' || char > 'Z') {
+			return false
+		}
+	}
+
+	return true
+}