Implemented numeric constants

src/build/token/Tokenize.go

@@ -70,6 +70,9 @@ func Tokenize(buffer []byte) List {
 		case ']':
 			tokens = append(tokens, Token{ArrayEnd, i, arrayEndBytes})
 
+		case '=', ':', '+', '-', '*', '/', '<', '>', '!':
+			tokens = append(tokens, Token{Operator, i, buffer[i : i+1]})
+
 		// Separator
 		case ',':
 			tokens = append(tokens, Token{Separator, i, separatorBytes})
@@ -147,3 +150,7 @@ func isNumber(c byte) bool {
 func isNumberStart(c byte) bool {
 	return isNumber(c) || c == '-'
 }
+
+func isOperator(c byte) bool {
+	return c == '=' || c == ':' || c == '+' || c == '-' || c == '*' || c == '/' || c == '<' || c == '>' || c == '!'
+}