Support for generation of ast.py from simple description of node

structure (ast.txt).  Usage is python astgen.py > ast.py.

1 files changed, 77 insertions, 0 deletions

diff --git a/Tools/compiler/ast.txt b/Tools/compiler/ast.txt
new file mode 100644
index 0000000..1ca13f2
--- /dev/null
+++ b/Tools/compiler/ast.txt
@@ -0,0 +1,77 @@
+Module: doc, node
+Stmt: nodes
+Function: name, argnames, defaults, flags, doc, code
+Lambda: argnames, defaults, flags, code
+Class: name, bases, doc, code
+Pass: 
+Break: 
+Continue: 
+For: assign, list, body, else_
+While: test, body, else_
+If: tests, else_
+Exec: expr, locals, globals
+From: modname, names
+Import: names
+Raise: expr1, expr2, expr3
+TryFinally: body, final
+TryExcept: body, handlers, else_
+Return: value
+Const: value
+Print: nodes, dest
+Printnl: nodes, dest
+Discard: expr
+AugAssign: node, op, expr
+Assign: nodes, expr
+AssTuple: nodes
+AssList: nodes
+AssName: name, flags
+AssAttr: expr, attrname, flags
+ListComp: expr, quals
+ListCompFor: assign, list, ifs
+ListCompIf: test
+List: nodes
+Dict: items
+Not: expr
+Compare: expr, ops
+Name: name
+Global: names
+Backquote: expr
+Getattr: expr, attrname
+CallFunc: node, args, star_args = None, dstar_args = None
+Keyword: name, expr
+Subscript: expr, flags, subs
+Ellipsis: 
+Sliceobj: nodes
+Slice: expr, flags, lower, upper
+Assert: test, fail
+Tuple: nodes
+Or: nodes
+And: nodes
+Bitor: nodes
+Bitxor: nodes
+Bitand: nodes
+LeftShift: (left, right)
+RightShift: (left, right)
+Add: (left, right)
+Sub: (left, right)
+Mul: (left, right)
+Div: (left, right)
+Mod: (left, right)
+Power: (left, right)
+UnaryAdd: expr
+UnarySub: expr
+Invert: expr
+
+init(Function):
+    self.varargs = self.kwargs = None
+    if flags & CO_VARARGS:
+        self.varargs = 1
+    if flags & CO_VARKEYWORDS:
+        self.kwargs = 1
+
+init(Lambda):
+    self.varargs = self.kwargs = None
+    if flags & CO_VARARGS:
+        self.varargs = 1
+    if flags & CO_VARKEYWORDS:
+        self.kwargs = 1