Lines Matching refs:yield
32 // Yield statements.
33 function* g() { yield 3; yield 4; }
35 // Yield expressions.
36 function* g() { (yield 3) + (yield 4); }
39 function* g() { "use strict"; yield 3; yield 4; }
42 // of yield expression.
43 function* g() { yield 1; return; }
44 function* g() { yield 1; return 2; }
45 function* g() { yield 1; return 2; yield "dead"; }
48 (function* () { yield 3; });
51 (function* g() { yield 3; });
53 // A generator without a yield is specified as causing an early error. This
61 function* g() { yield yield 1; }
62 function* g() { yield 3 + (yield 4); }
64 // Generator definitions with a name of "yield" are not specifically ruled out
65 // by the spec, as the `yield' name is outside the generator itself. However,
66 // in strict-mode, "yield" is an invalid identifier.
67 function* yield() { (yield 3) + (yield 4); }
68 assertThrows("function* yield() { \"use strict\"; (yield 3) + (yield 4); }",
71 // In classic mode, yield is a normal identifier, outside of generators.
72 function yield(yield) { yield: yield (yield + yield (0)); }
74 // Yield is always valid as a key in an object literal.
75 ({ yield: 1 });
76 function* g() { yield ({ yield: 1 }) }
77 function* g() { yield ({ get yield() { return 1; }}) }
79 // Checks that yield is a valid label in classic mode, but not valid in a strict
81 function f() { yield: 1 }
82 assertThrows("function f() { \"use strict\"; yield: 1 }", SyntaxError)
83 assertThrows("function* g() { yield: 1 }", SyntaxError)
85 // Yield is only a keyword in the body of the generator, not in nested
87 function* g() { function f() { yield (yield + yield (0)); } }
89 // Yield needs a RHS.
90 assertThrows("function* g() { yield; }", SyntaxError);
92 // Yield in a generator is not an identifier.
93 assertThrows("function* g() { yield = 10; }", SyntaxError);
95 // Yield binds very loosely, so this parses as "yield (3 + yield 4)", which is
97 assertThrows("function* g() { yield 3 + yield 4; }", SyntaxError);
99 // Yield is still a future-reserved-word in strict mode
100 assertThrows("function f() { \"use strict\"; var yield = 13; }", SyntaxError);
103 assertThrows("function* g() { yield (function yield() {}); }", SyntaxError);
105 // In generators, yield is invalid as a formal argument name.
106 assertThrows("function* g(yield) { yield (10); }", SyntaxError);
