tape: WIP

tape/dynamic.go

@@ -6,6 +6,8 @@ package tape
 // TODO: add support for struct tags: `tape:"0000"`, tape:"0001"` so they can get
 // transformed into tables with a defined schema
 
+// TODO: test all of these smaller functions individually
+
 import "fmt"
 import "reflect"
 
@@ -346,10 +348,12 @@ func peekSlice(decoder *Decoder, tag Tag) (Tag, int, error) {
 	for {
 		elem, populated, n, err := peekSliceOnce(decoder, tag, offset)
 		if err != nil { return 0, 0, err }
-		offset    += n
+		offset     = n
 		dimension += 1
 		if elem.Is(OTA) {
 			if !populated {
+				// default to a large byte array, will be
+				// interpreted as a string.
 				return LBA, dimension + 1, nil
 			}
 		} else {
@@ -371,7 +375,7 @@ func peekSliceOnce(decoder *Decoder, tag Tag, offset int) (elem Tag, populated b
 	headerBytes, err := decoder.Peek(elemTagEnd)
 	if err != nil { return 0, false, 0, err }
 
-	elem = Tag(headerBytes[len(headerBytes)])
+	elem = Tag(headerBytes[len(headerBytes) - 1])
 	for index := lengthStart; index < lengthEnd; index += 1 {
 		if headerBytes[index] > 0 {
 			populated = true