gclient_eval: Handle non-string variables.

Bug: 877902
Change-Id: I77a1f213318d1e09ae050c2ea0113b2976bd259e
Reviewed-on: https://chromium-review.googlesource.com/1191928Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

gclient_eval.py

@@ -602,7 +602,9 @@ def RenderDEPSFile(gclient_dict):
 
 def _UpdateAstString(tokens, node, value):
   position = node.lineno, node.col_offset
-  quote_char = tokens[position][1][0]
+  quote_char = ''
+  if isinstance(node, ast.Str):
+    quote_char = tokens[position][1][0]
   tokens[position][1] = quote_char + value + quote_char
   node.s = value
 

tests/gclient_eval_unittest.py

@@ -325,6 +325,26 @@ class VarTest(unittest.TestCase):
         '}',
     ]))
 
+  def test_gets_and_sets_var_non_string(self):
+    local_scope = gclient_eval.Exec('\n'.join([
+        'vars = {',
+        '  "foo": True,',
+        '}',
+    ]))
+
+    result = gclient_eval.GetVar(local_scope, 'foo')
+    self.assertEqual(result, True)
+
+    gclient_eval.SetVar(local_scope, 'foo', 'False')
+    result = gclient_eval.RenderDEPSFile(local_scope)
+
+    self.assertEqual(result, '\n'.join([
+        'vars = {',
+        '  "foo": False,',
+        '}',
+    ]))
+
+
   def test_add_preserves_formatting(self):
     before = [
         '# Copyright stuff',