Add support for implicit outputs in ninja_syntax.py.

2 files changed, 13 insertions, 1 deletions

diff --git a/misc/ninja_syntax.py b/misc/ninja_syntax.py
index 73d2209..5c52ea2 100644
--- a/misc/ninja_syntax.py
+++ b/misc/ninja_syntax.py
@@ -60,7 +60,7 @@ class Writer(object):
             self.variable('deps', deps, indent=1)
 
     def build(self, outputs, rule, inputs=None, implicit=None, order_only=None,
-              variables=None):
+              variables=None, implicit_outputs=None):
         outputs = as_list(outputs)
         out_outputs = [escape_path(x) for x in outputs]
         all_inputs = [escape_path(x) for x in as_list(inputs)]
@@ -73,6 +73,11 @@ class Writer(object):
             order_only = [escape_path(x) for x in as_list(order_only)]
             all_inputs.append('||')
             all_inputs.extend(order_only)
+        if implicit_outputs:
+            implicit_outputs = [escape_path(x)
+                                for x in as_list(implicit_outputs)]
+            out_outputs.append('|')
+            out_outputs.extend(implicit_outputs)
 
         self._line('build %s: %s' % (' '.join(out_outputs),
                                      ' '.join([rule] + all_inputs)))
diff --git a/misc/ninja_syntax_test.py b/misc/ninja_syntax_test.py
index c9755b8..07e3ed3 100755
--- a/misc/ninja_syntax_test.py
+++ b/misc/ninja_syntax_test.py
@@ -154,6 +154,13 @@ build out: cc in
 ''',
                          self.out.getvalue())
 
+    def test_implicit_outputs(self):
+        self.n.build('o', 'cc', 'i', implicit_outputs='io')
+        self.assertEqual('''\
+build o | io: cc i
+''',
+                         self.out.getvalue())
+
 class TestExpand(unittest.TestCase):
     def test_basic(self):
         vars = {'x': 'X'}