Slice arrays

crates/pile-value/src/value/value.rs

@@ -140,6 +140,40 @@ impl PileValue {
 
 					out = e.get(state, idx).await?;
 				}
+
+				PathSegment::Range {
+					start,
+					end,
+					inclusive,
+				} => {
+					let e = match out.map(|x| x.list_extractor()) {
+						Some(e) => e,
+						None => {
+							out = None;
+							continue;
+						}
+					};
+
+					let len = e.len(state).await? as i64;
+
+					let start_idx = if *start >= 0 { *start } else { len + start };
+					let end_idx = if *end >= 0 { *end } else { len + end };
+					let end_idx = if *inclusive { end_idx + 1 } else { end_idx };
+
+					let start_idx = start_idx.max(0) as usize;
+					let end_idx = (end_idx.max(0) as usize).min(len as usize);
+
+					let mut items = Vec::new();
+					for i in start_idx..end_idx {
+						match e.get(state, i).await? {
+							Some(v) => items.push(v),
+							None => break,
+						}
+					}
+
+					// TODO: lazy view?
+					out = Some(PileValue::Array(Arc::new(items)));
+				}
 			}
 		}