Allow files containing only comments

virtuald · Apr 14, 2020 · 3cbb16f · 3cbb16f
1 parent 778fc27
commit 3cbb16f
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Showing 4 changed files with 17 additions and 1 deletion.
diff --git a/src/hcl/parser.py b/src/hcl/parser.py
@@ -122,11 +122,22 @@ def objectlist_flat(self, lt, replace):
         return d
 
     def p_top(self, p):
-        "top : objectlist"
+        '''
+        top : empty
+            | objectlist
+        '''
         if DEBUG:
             self.print_p(p)
         p[0] = self.objectlist_flat(p[1], True)
 
+    def p_empty_0(self, p):
+        '''
+        empty :
+        '''
+        if DEBUG:
+            self.print_p(p)
+        p[0] = []
+
     def p_objectlist_0(self, p):
         "objectlist : objectitem"
         if DEBUG:

diff --git a/tests/fixtures/only_comments.hcl b/tests/fixtures/only_comments.hcl
@@ -0,0 +1,3 @@
+# This is an empty file, except for a comment.
+
+# Another comment
diff --git a/tests/fixtures/only_comments.json b/tests/fixtures/only_comments.json
@@ -0,0 +1 @@
+{}
diff --git a/tests/test_decoder.py b/tests/test_decoder.py
@@ -26,6 +26,7 @@
     ('function.hcl', 'function.json', None),
     ('multiline_bad.hcl', 'multiline.json', None),
     ('nested_lists.hcl', 'nested_lists.json', None),
+    ('only_comments.hcl', 'only_comments.json', None),
     ('scientific.hcl', 'scientific.json', None),
     ('structure.hcl', 'structure_flat.json', None),
     #('structure2.hcl', 'structure2.json', None),  # not in the golang tests
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,3 @@
		# This is an empty file, except for a comment.

		# Another comment