Handle single quoted strings.

dcs/lua/parse.py

@@ -41,7 +41,7 @@ def parse(self):
             c = self.char()
             if c == '{':
                 return self.object()
-            elif c == '"':
+            elif c in ('"', "'"):
                 return self.string()
             elif c.isnumeric() or c == '-':
                 return self.number()
@@ -145,13 +145,15 @@ def str_function(self) -> str:
             return s
 
         def string(self) -> str:
-            if self.char() != '"':
+            if self.char() not in ('"', "'"):
                 se = SyntaxError()
                 se.lineno = self.lineno
                 se.offset = self.pos
-                se.text = "Expected character '\"', got '{char}'".format(char=self.char())
+                se.text = "Expected character '\"' or \"'\", got '{char}'".format(char=self.char())
                 raise se
 
+            terminator = self.char()
+
             state = 0
             s = ''
             while state != 1:
@@ -160,7 +162,7 @@ def string(self) -> str:
 
                 c = self.char()
                 if state == 0:
-                    if c == '"':
+                    if c == terminator:
                         state = 1
                         self.pos += 1
                     elif c == '\\':

dcs/lua/test_parse.py

@@ -314,6 +314,17 @@ def test_block_comment(self) -> None:
         )
         self.assertEqual(r["foo"], "bar")
 
+    def test_single_quoted_string(self) -> None:
+        r = loads("name = 'foobar'")
+        self.assertEqual(r["name"], "foobar")
+
+    def test_mixed_quote_strings(self) -> None:
+        r = loads("name = 'foo \"bar\" baz'")
+        self.assertEqual(r["name"], 'foo "bar" baz')
+
+        r = loads("name = \"foo 'bar' baz\"")
+        self.assertEqual(r["name"], "foo 'bar' baz")
+
 
 if __name__ == '__main__':
     unittest.main()