mojom: Add associative arrays to the mojom language.

mojo/public/tools/bindings/pylib/mojom/generate/data.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # TODO(vtl): "data" is a pretty vague name. Rename it?
 
 import copy
 
 import module as mojom
 
@@ skipping 105 matching lines @@
   kind = LookupKind(kinds, data, scope)
   if kind:
     return kind
 
   if data.startswith('?'):
     kind = KindFromData(kinds, data[1:], scope).MakeNullableKind()
   elif data.startswith('a:'):
     kind = mojom.Array(KindFromData(kinds, data[2:], scope))
   elif data.startswith('r:'):
     kind = mojom.InterfaceRequest(KindFromData(kinds, data[2:], scope))
+  elif data.startswith('m['):
+    # Isolate the two types from their brackets
+    first_kind = data[2:data.find(']')]
+    second_kind = data[data.rfind('[')+1:data.rfind(']')]
+    kind = mojom.Map(KindFromData(kinds, first_kind, scope),
+                     KindFromData(kinds, second_kind, scope))
   elif data.startswith('a'):
     colon = data.find(':')
     length = int(data[1:colon])
     kind = mojom.FixedArray(length, KindFromData(kinds, data[colon+1:], scope))
   else:
     kind = mojom.Kind(data)
 
   kinds[data] = kind
   return kind
 
@@ skipping 238 matching lines @@
 
 def OrderedModuleFromData(data):
   module = ModuleFromData(data)
   for interface in module.interfaces:
     next_ordinal = 0
     for method in interface.methods:
       if method.ordinal is None:
         method.ordinal = next_ordinal
       next_ordinal = method.ordinal + 1
   return module