Add experimental python scripts for debugging

* chain/src/item/default/printer.lldb:
* chain/src/item/default/printer.py: These are for experimenting with
  debugger supports.

2 files changed, 34 insertions, 0 deletions

diff --git a/chain/src/item/default/printer.lldb b/chain/src/item/default/printer.lldb
new file mode 100644
index 0000000..eb0032a
--- /dev/null
+++ b/chain/src/item/default/printer.lldb
@@ -0,0 +1 @@
+type summary add -x "DefaultForest" -e -F ForestPrinter
\ No newline at end of file
diff --git a/chain/src/item/default/printer.py b/chain/src/item/default/printer.py
new file mode 100644
index 0000000..5670545
--- /dev/null
+++ b/chain/src/item/default/printer.py
@@ -0,0 +1,33 @@
+import lldb
+
+class ForestPrinter:
+    "Print a Forest"
+
+    def __init__(self, val):
+        self.forest = val
+        self.root = val["root"]
+        self.graph = val["graph"]
+
+    def to_string(self):
+        return "a forest with root {} and graph {}".format(self.root, self.graph)
+
+def lookup(val):
+    lookup_tag = val.type.tag
+    if lookup_tag is None:
+        return None
+    if lookup_tag.startswith("chain::item::default::DefaultForest"):
+        return ForestPrinter(val)
+
+    return None
+
+
+def ForestPrint(valobj, dict):
+    objtype = valobj.type
+    
+    print(dir(valobj))
+    print(valobj.GetValue())
+
+    return "hihi"
+
+# co sc i -r ../chain/src/item/default/printer.py
+# type summary add -x "DefaultForest" -e -F printer.ForestPrint --category Rust