[parsing] Add some more tests of maybe-assigned.

test/cctest/test-parsing.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3243 matching lines @@
 
 TEST(InnerAssignment) {
   i::Isolate* isolate = CcTest::i_isolate();
   i::Factory* factory = isolate->factory();
   i::HandleScope scope(isolate);
   LocalContext env;
 
   const char* prefix = "function f() {";
   const char* midfix = " function g() {";
   const char* suffix = "}}; f";
-  struct { const char* source; bool assigned; bool strict; } outers[] = {
-    // Actual assignments.
-    { "var x; var x = 5;", true, false },
-    { "var x; { var x = 5; }", true, false },
-    { "'use strict'; let x; x = 6;", true, true },
-    { "var x = 5; function x() {}", true, false },
-    // Actual non-assignments.
-    { "var x;", false, false },
-    { "var x = 5;", false, false },
-    { "'use strict'; let x;", false, true },
-    { "'use strict'; let x = 6;", false, true },
-    { "'use strict'; var x = 0; { let x = 6; }", false, true },
-    { "'use strict'; var x = 0; { let x; x = 6; }", false, true },
-    { "'use strict'; let x = 0; { let x = 6; }", false, true },
-    { "'use strict'; let x = 0; { let x; x = 6; }", false, true },
-    { "var x; try {} catch (x) { x = 5; }", false, false },
-    { "function x() {}", false, false },
-    // Eval approximation.
-    { "var x; eval('');", true, false },
-    { "eval(''); var x;", true, false },
-    { "'use strict'; let x; eval('');", true, true },
-    { "'use strict'; eval(''); let x;", true, true },
-    // Non-assignments not recognized, because the analysis is approximative.
-    { "var x; var x;", true, false },
-    { "var x = 5; var x;", true, false },
-    { "var x; { var x; }", true, false },
-    { "var x; function x() {}", true, false },
-    { "function x() {}; var x;", true, false },
-    { "var x; try {} catch (x) { var x = 5; }", true, false },
+  struct {
+    const char* source;
+    bool assigned;
+    bool strict;
+  } outers[] = {
+      // Actual assignments.
+      {"var x; var x = 5;", true, false},
+      {"var x; { var x = 5; }", true, false},
+      {"'use strict'; let x; x = 6;", true, true},
+      {"var x = 5; function x() {}", true, false},
+      {"var x = 4; var x = 5;", true, false},
+      {"var [x, x] = [4, 5];", true, false},
+      {"var {a: x, b: x} = {a: 4, b: 5};", true, false},
+      {"var x = {a: 4, b: (x = 5)};", true, false},
+      {"var {x=1} = {a: 4, b: (x = 5)};", true, false},
+      {"var {x} = {x: 4, b: (x = 5)};", true, false},
+      // Actual non-assignments.
+      {"var x;", false, false},
+      {"var x = 5;", false, false},
+      {"'use strict'; let x;", false, true},
+      {"'use strict'; let x = 6;", false, true},
+      {"'use strict'; var x = 0; { let x = 6; }", false, true},
+      {"'use strict'; var x = 0; { let x; x = 6; }", false, true},
+      {"'use strict'; let x = 0; { let x = 6; }", false, true},
+      {"'use strict'; let x = 0; { let x; x = 6; }", false, true},
+      {"var x; try {} catch (x) { x = 5; }", false, false},
+      {"function x() {}", false, false},
+      // Eval approximation.
+      {"var x; eval('');", true, false},
+      {"eval(''); var x;", true, false},
+      {"'use strict'; let x; eval('');", true, true},
+      {"'use strict'; eval(''); let x;", true, true},
+      // Non-assignments not recognized, because the analysis is approximative.
+      {"var x; var x;", true, false},
+      {"var x = 5; var x;", true, false},
+      {"var x; { var x; }", true, false},
+      {"var x; function x() {}", true, false},
+      {"function x() {}; var x;", true, false},
+      {"var x; try {} catch (x) { var x = 5; }", true, false},
   };
   struct { const char* source; bool assigned; bool with; } inners[] = {
     // Actual assignments.
     { "x = 1;", true, false },
     { "x++;", true, false },
     { "++x;", true, false },
     { "x--;", true, false },
     { "--x;", true, false },
     { "{ x = 1; }", true, false },
     { "'use strict'; { let x; }; x = 0;", true, false },
@@ skipping 5233 matching lines @@
     DCHECK_NOT_NULL(scope);
     DCHECK_NULL(scope->sibling());
     DCHECK(scope->is_function_scope());
     const i::AstRawString* var_name =
         info.ast_value_factory()->GetOneByteString("my_var");
     i::Variable* var = scope->Lookup(var_name);
     CHECK_EQ(inners[i].ctxt_allocate,
              i::ScopeTestHelper::MustAllocateInContext(var));
   }
 }