compile: implement Ellipsis

Author: ncw

compile/compile.go

@@ -1612,7 +1612,7 @@ func (c *compiler) Expr(expr ast.Expr) {
 		// Value Singleton
 		c.LoadConst(node.Value)
 	case *ast.Ellipsis:
-		panic("FIXME compile: Ellipsis not implemented")
+		c.LoadConst(py.Ellipsis)
 	case *ast.Attribute:
 		// Value Expr
 		// Attr  Identifier

compile/compile_data_test.go

@@ -3824,4 +3824,21 @@ var compileTestData = []struct {
 		Firstlineno: 1,
 		Lnotab:      "",
 	}, nil, ""},
+	{"...", "exec", &py.Code{
+		Argcount:       0,
+		Kwonlyargcount: 0,
+		Nlocals:        0,
+		Stacksize:      1,
+		Flags:          64,
+		Code:           "\x64\x00\x00\x01\x64\x01\x00\x53",
+		Consts:         []py.Object{py.Ellipsis, py.None},
+		Names:          []string{},
+		Varnames:       []string{},
+		Freevars:       []string{},
+		Cellvars:       []string{},
+		Filename:       "<string>",
+		Name:           "<module>",
+		Firstlineno:    1,
+		Lnotab:         "",
+	}, nil, ""},
 }

compile/make_compile_test.py

@@ -361,6 +361,8 @@ def f():
 def f():
     yield from range(10)
     ''', "exec"),
+    # ellipsis
+    ('''...''', "exec"),
 ]
 
 def string(s):
@@ -419,6 +421,8 @@ def const(x):
         ])
     elif x is None:
         return 'py.None'
+    elif x is ...:
+        return 'py.Ellipsis'
     else:
         raise AssertionError("Unknown const %r" % x)