Initial implementation of the Ion 1.1 text reader

Cargo.toml

@@ -71,6 +71,7 @@ num-integer = "0.1.44"
 num-traits = "0.2"
 arrayvec = "0.7"
 smallvec = {version ="1.9.0", features = ["const_generics"]}
+bumpalo = {version = "3.13.0", features = ["collections"]}
 digest = { version = "0.9", optional = true }
 sha2 = { version = "0.9", optional = true }
 serde = { version = "1.0", features = ["derive"], optional = true }

examples/lazy_read_all_values.rs

@@ -74,7 +74,7 @@ mod lazy_reader_example {
     fn count_struct_children(lazy_struct: &LazyBinaryStruct) -> IonResult<usize> {
         let mut count = 0;
         for field in lazy_struct {
-            count += count_value_and_children(field?.value())?;
+            count += count_value_and_children(&field?.value())?;
         }
         Ok(count)
     }

src/element/mod.rs

@@ -362,12 +362,18 @@ impl IonOrd for Element {
 }
 
 /// An `(annotations, value)` pair representing an Ion value.
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub struct Element {
     annotations: Annotations,
     value: Value,
 }
 
+impl std::fmt::Debug for Element {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        <Element as Display>::fmt(self, f)
+    }
+}
+
 impl Element {
     pub(crate) fn new(annotations: Annotations, value: impl Into<Value>) -> Self {
         Self {

src/element/reader.rs

@@ -67,7 +67,7 @@ pub trait ElementReader {
     /// returning the complete sequence as a `Vec<Element>`.
     ///
     /// If an error occurs while reading, returns `Err(IonError)`.
-    fn read_all_elements(&mut self) -> IonResult<Vec<Element>> {
+    fn read_all_elements(&mut self) -> IonResult<Sequence> {
         self.elements().collect()
     }
 }