Results do not match other implementations #6

src/parser/mod.rs

@@ -263,6 +263,13 @@ mod parser_tests {
             ParseToken::ArrayEof
         ]));
 
+        assert_eq!(run("$[:]"), Ok(vec![
+            ParseToken::Absolute,
+            ParseToken::Array,
+            ParseToken::Range(None, None),
+            ParseToken::ArrayEof
+        ]));
+
         match run("$[") {
             Ok(_) => panic!(),
             _ => {}
@@ -520,5 +527,12 @@ mod tokenizer_tests {
             ]
             , Some(TokenError::Eof)
         ));
+
+        run("$[:]", (vec![
+            Token::Absolute(0),
+            Token::OpenArray(1),
+            Token::Split(2),
+            Token::CloseArray(3)
+        ], Some(TokenError::Eof)));
     }
 }

src/parser/parser.rs

@@ -375,6 +375,13 @@ impl Parser {
 
     fn range_to(tokenizer: &mut TokenReader) -> ParseResult<Node> {
         debug!("#range_to");
+        match tokenizer.peek_token() {
+            Ok(Token::CloseArray(_)) => {
+                return Ok(Self::node(ParseToken::Range(None, None)))
+            }
+            _ => {}
+        }
+
         match tokenizer.next_token() {
             Ok(Token::Key(pos, ref val)) => {
                 let digit = utils::string_to_isize(val, || tokenizer.err_msg_with_pos(pos))?;

tests/filter.rs

@@ -350,3 +350,10 @@ fn filer_same_obj() {
         {"a": 1}
     ]));
 }
+
+#[test]
+fn empty_range() {
+    setup();
+
+    select_and_then_compare("$[:]", json!(["first", "second"]), json!(["first", "second"]));
+}