Perl: add vector, hash-map, metadata, atom support. TCO let*

- Changes all collections to be one level of inderection where the top
  level is always a hash containing 'meta' and 'val'.

1 files changed, 15 insertions, 7 deletions

diff --git a/docs/step_notes.txt b/docs/step_notes.txt
index 79036a8..09bc356 100644
--- a/docs/step_notes.txt
+++ b/docs/step_notes.txt
@@ -78,8 +78,6 @@ Step Notes:
     - eval_ast:
         - if symbol, return value of looking up in env
         - if list, eval each item, return new list
-        - if vector support, eval each item, return new vector
-        - if hash_map support, eval each value, return new hash_map
         - otherwise, just return unchanged ast
     - EVAL/apply:
         - if not a list, call eval_ast
@@ -87,6 +85,12 @@ Step Notes:
     - repl_env as simple one level assoc. array (or hash_map)
         - store function as hash_map value
 
+- vectors
+    - eval each item, return new vector
+
+- hash-maps
+    - eval each value, return new hash_map
+
 - step3_env
     - types module:
         - may need function type if HashMap is strongly typed (e.g. Java)
@@ -195,6 +199,8 @@ Step Notes:
 - Extra defintions needed for self-hosting
     - core module:
         - symbol?, sequential? (if not already)
+        - vector, vector?
+
 
 - Other misc:
     - conj function
@@ -202,14 +208,16 @@ Step Notes:
 - atoms
     - reader module:
         - @a reader macro -> (deref a)
-    - types module:
+    - core module:
         - pr_str case
         - atom type, atom, atom?, deref, reset!, swap!
 
 - metadata
-    - types module:
-        - support meta property on symbols, hash-maps, lists, vectors,
-          functions, atoms
-        - add with-meta, meta functions
     - reader module:
         - ^ reader macro reads ^meta obj -> (with-meta obj meta)
+    - types module:
+        - support meta property on collections: lists, vectors,
+          hash-maps, functions, atoms
+            - clone/copy of collections
+    - core module:
+        - add with-meta, meta functions