namespace generator tool

1 files changed, 82 insertions, 0 deletions

diff --git a/tools/namespacer.py b/tools/namespacer.py
new file mode 100644
index 00000000..966e917c
--- /dev/null
+++ b/tools/namespacer.py
@@ -0,0 +1,82 @@
+#!/usr/bin/python
+
+'''
+Tool that generates namespace boilerplate. Given
+
+  _mangled_name1_ = MyClass::MyClass()
+  _mangled_name2_ = MyClass::~MyClass()
+  _mangled_name3_ = MyClass::DoSomething(int)
+
+the tool will generate
+
+  MyClass = {
+    'MyClass':     _mangled_name1_,
+    '~MyClass':  _mangled_name2_,
+    'DoSomething': _mangled_name3_
+  };
+
+You can then do the following in JavaScript:
+
+  MyClass.MyClass(ptr);
+  MyClass['~MyClass'](ptr); // Need string here, due to |~|
+  MyClass.DoSomething(ptr, 17);
+
+Note that you need to send the |this| pointer yourself. TODO:
+a more OO boilerplate on top of that.
+'''
+
+import os, sys, json
+
+data = open(sys.argv[1], 'r').readlines()
+
+space = {}
+
+for line in data:
+  line = line.rstrip()
+
+  realname, signature = line.split(' = ')
+  signature = signature.replace(') const', ')')
+  signature = signature[:-1].split('(')
+  func, params = signature[0], '('.join(signature[1:])
+
+  if ' ' in func:
+    i = func.index(' ')
+    ret = func[:i]
+    if '<' not in ret and '[' not in ret and '(' not in ret:
+      func = func[i+1:]
+
+  funcparts = ['Namespace'] + func.split('::')
+
+  currspace = space
+  for part in funcparts[:-1]:
+    currspace = currspace.setdefault(part, {})
+  currspace.setdefault(funcparts[-1], []).append((realname,params));
+
+def clean(currspace):
+  if type(currspace) is list:
+    if len(currspace) == 1:
+      return currspace[0][0]
+    else:
+      ret = {}
+      for item in currspace:
+        i = str(len(ret)/2)
+        ret[i] = item[0]
+        ret[i + '_params'] = item[1]
+      return ret
+  else:
+    for key in currspace.keys():
+      currspace[key] = clean(currspace[key])
+    return currspace
+
+space = clean(space)
+
+def finalize(line):
+  try:
+    key, val = line.split(': ')
+    assert val != '}' and '_params"' not in key
+    return key + ': ' + val.replace('"', '')
+  except:
+    return line
+
+print '\n'.join(map(finalize, json.dumps(space, sort_keys=True, indent=2).split('\n')))
+