Mode clean-up pt 1: rename classic/non-strict mode to sloppy mode

test/mjsunit/harmony/generators-parsing.js

 // Copyright 2013 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 50 matching lines @@
 function* g() { yield yield 1; }
 function* g() { yield 3 + (yield 4); }
 
 // Generator definitions with a name of "yield" are not specifically ruled out
 // by the spec, as the `yield' name is outside the generator itself.  However,
 // in strict-mode, "yield" is an invalid identifier.
 function* yield() { (yield 3) + (yield 4); }
 assertThrows("function* yield() { \"use strict\"; (yield 3) + (yield 4); }",
              SyntaxError);
 
-// In classic mode, yield is a normal identifier, outside of generators.
+// In sloppy mode, yield is a normal identifier, outside of generators.
 function yield(yield) { yield: yield (yield + yield (0)); }
 
 // Yield is always valid as a key in an object literal.
 ({ yield: 1 });
 function* g() { yield ({ yield: 1 }) }
 function* g() { yield ({ get yield() { return 1; }}) }
 
-// Checks that yield is a valid label in classic mode, but not valid in a strict
+// Checks that yield is a valid label in sloppy mode, but not valid in a strict
 // mode or in generators.
 function f() { yield: 1 }
 assertThrows("function f() { \"use strict\"; yield: 1 }", SyntaxError)
 assertThrows("function* g() { yield: 1 }", SyntaxError)
 
 // Yield is only a keyword in the body of the generator, not in nested
 // functions.
 function* g() { function f() { yield (yield + yield (0)); } }
 
 // Yield needs a RHS.
 assertThrows("function* g() { yield; }", SyntaxError);
 
 // Yield in a generator is not an identifier.
 assertThrows("function* g() { yield = 10; }", SyntaxError);
 
 // Yield binds very loosely, so this parses as "yield (3 + yield 4)", which is
 // invalid.
 assertThrows("function* g() { yield 3 + yield 4; }", SyntaxError);
 
 // Yield is still a future-reserved-word in strict mode
 assertThrows("function f() { \"use strict\"; var yield = 13; }", SyntaxError);
 
 // The name of the NFE is let-bound in G, so is invalid.
 assertThrows("function* g() { yield (function yield() {}); }", SyntaxError);
 
 // In generators, yield is invalid as a formal argument name.
 assertThrows("function* g(yield) { yield (10); }", SyntaxError);