fix #67 remove invalid continue keyword from grammar

Author: boolangery

luaparser/astnodes.py

@@ -395,14 +395,6 @@ class Break(Statement):
     def __init__(self, **kwargs):
         super(Break, self).__init__("Break", **kwargs)
 
-
-class Continue(Statement):
-    """Define the continue lua statement."""
-
-    def __init__(self, **kwargs):
-        super(Continue, self).__init__("Continue", **kwargs)
-
-
 class Return(Statement):
     """Define the Lua return statement.
 

luaparser/builder.py

@@ -325,8 +325,6 @@ def visitRetstat(self, ctx: LuaParser.RetstatContext):
             ))
         elif ctx.BREAK():
             return self.add_context(ctx, Break())
-        else:
-            return self.add_context(ctx, Continue())
 
     # Visit a parse tree produced by LuaParser#label.
     def visitLabel(self, ctx: LuaParser.LabelContext):

luaparser/parser/LuaLexer.g4

@@ -32,7 +32,6 @@ LOCAL    : 'local';
 LT       : '<';
 GT       : '>';
 RETURN   : 'return';
-CONTINUE : 'continue';
 CC       : '::';
 NIL      : 'nil';
 FALSE    : 'false';

luaparser/parser/LuaLexer.interp

@@ -60,7 +60,7 @@ attrib
     ;
 
 retstat
-    : ('return' explist? | 'break' | 'continue') ';'?
+    : ('return' explist? | 'break' ) ';'?
     ;
 
 label

luaparser/parser/LuaLexer.py

@@ -513,17 +513,6 @@ def test_break(self):
         exp = Chunk(Block([Break()]))
         self.assertEqual(exp, tree)
 
-    def test_continue(self):
-        tree = ast.parse(
-            textwrap.dedent(
-                """
-            continue
-            """
-            )
-        )
-        exp = Chunk(Block([Continue()]))
-        self.assertEqual(exp, tree)
-
     def test_return(self):
         tree = ast.parse(r"return nil")
         exp = Chunk(Block([Return([Nil()])]))
@@ -614,3 +603,28 @@ def test_method(self):
 
     def test_exceptions(self):
         self.assertRaises(SyntaxException, ast.parse, 'print(!h!)')
+
+    def test_integration_can_use_continue_name(self):
+        tree = ast.parse(
+            textwrap.dedent(
+                """       
+                continue = "hello world"
+                print(continue)
+                """
+            )
+        )
+        exp = Chunk(
+            Block(
+                [
+                    Assign(
+                        targets=[Name("continue")],
+                        values=[String(b"hello world", "hello world", StringDelimiter.DOUBLE_QUOTE)],
+                    ),
+                    Call(
+                        func=Name("print"),
+                        args=[Name("continue")],
+                    )
+                ]
+            )
+        )
+        self.assertEqual(exp, tree)