Scripts to generate Android.mk for framework Skia.

platform_tools/android/gyp_gen/vars_dict_lib.py

+#!/usr/bin/python
+
+# Copyright 2014 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import collections
+
+class OrderedSet(object):
+  """
+  Ordered set of unique items that supports addition and removal.
+  """
+
+  def __init__(self):
+    self.__li = []
+
+  def add(self, item):
+    """
+    Add item, if it is not already in the set.
+    @param item The item to add.
+    """
+    if item not in self.__li:
+      self.__li.append(item)
+
+  def __contains__(self, item):
+    """
+    Whether the set contains item.
+    @param item The item to search for in the set.
+    @return bool Whether the item is in the set.
+    """
+    return item in self.__li
+
+  def __iter__(self):
+    """
+    Iterator for the set.
+    """
+    return self.__li.__iter__()
+
+  def remove(self, item):
+    """
+    Remove item from the set.
+    @param item Item to be removed.
+    """
+    return self.__li.remove(item)
+
+  def __len__(self):
+    """
+    Number of items in the set.
+    """
+    return len(self.__li)
+
+VAR_NAMES = ['LOCAL_CFLAGS',
+             'LOCAL_CPPFLAGS',
+             'LOCAL_SRC_FILES',
+             'LOCAL_SHARED_LIBRARIES',
+             'LOCAL_STATIC_LIBRARIES',
+             'LOCAL_C_INCLUDES',
+             'LOCAL_EXPORT_C_INCLUDE_DIRS',
+             'KNOWN_TARGETS']
+
+class VarsDict(collections.namedtuple('VarsDict', VAR_NAMES)):
+  """
+  Custom class for storing the arguments to Android.mk variables.
+  """
+
+  __slots__ = ()
+
+  def __new__(_cls):
+    lists = []
+    for i in range(len(VAR_NAMES)):
+      lists.append(OrderedSet())
+    return tuple.__new__(_cls, lists)
+
+
+def intersect(var_dict_list):
+  """
+  Find the intersection of a list of VarsDicts and trim each input to its
+  unique entries.
+  @param var_dict_list list of VarsDicts.
+  @return VarsDict containing list entries common to all VarsDicts in
+          var_dict_list
+  """
+  intersection = VarsDict()
+  # First VarsDict
+  var_dictA = var_dict_list[0]
+  # The rest.
+  other_var_dicts = var_dict_list[1:]
+
+  for i in range(len(var_dictA)):

[scroggo, 2014/01/31 22:16:24]

As in write_local_vars, I essentially want a way to say:

for key in var_dictA.keys(): # Which should be var_dict_a...
  aList = list(var_dictA[key]) # a_list...
  # etc.

As far as I can tell, I've lost this ability by changing to a namedtuple. That
said, I think it's probably worth it given the improved readability of
gypd_parser.py.

Note that here I could have done the eval('var_dictA.%s' % key) trick I do in
write_local_vars. Or I could do this there. Or I could write a new function
(getField?) to hide that. What do you think?

[scroggo, 2014/02/01 16:24:01]

Just figured this out. I'll override __getitem__ to keep its current behavior if
the parameter is an int, and to treat it like a dictionary lookup if the
parameter is a string.

Will put up a patch fixing this on Monday.

+    # Copy A's list, so we can continue iterating after modifying the original.
+    aList = list(var_dictA[i])
+    for item in aList:
+      # If item is in all lists, add to intersection, and remove from all.
+      in_all_lists = True
+      for var_dict in other_var_dicts:
+        if not item in var_dict[i]:
+          in_all_lists = False
+          break
+      if in_all_lists:
+        intersection[i].add(item)
+        for var_dict in var_dict_list:
+          var_dict[i].remove(item)
+  return intersection
+