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      1 // Copyright 2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Test that we get exceptions for invalid left-hand sides.  The
     29 // exceptions are delayed until runtime.
     30 
     31 // Normal assignments:
     32 assertThrows("12 = 12");
     33 assertThrows("x++ = 12");
     34 assertThrows("eval('var x') = 12");
     35 assertDoesNotThrow("if (false) eval('var x') = 12");
     36 
     37 // Pre- and post-fix operations:
     38 assertThrows("12++");
     39 assertThrows("12--");
     40 assertThrows("--12");
     41 assertThrows("++12");
     42 assertThrows("++(eval('12'))");
     43 assertThrows("(eval('12'))++");
     44 assertDoesNotThrow("if (false) ++(eval('12'))");
     45 assertDoesNotThrow("if (false) (eval('12'))++");
     46 
     47 // For in:
     48 assertThrows("for (12 in [1]) print(12);");
     49 assertThrows("for (eval('var x') in [1]) print(12);");
     50 assertDoesNotThrow("if (false) for (eval('var x') in [1]) print(12);");
     51 
     52 // For:
     53 assertThrows("for (12 = 1;;) print(12);");
     54 assertThrows("for (eval('var x') = 1;;) print(12);");
     55 assertDoesNotThrow("if (false) for (eval('var x') = 1;;) print(12);");
     56 
     57 // Assignments to 'this'.
     58 assertThrows("this = 42");
     59 assertDoesNotThrow("function f() { this = 12; }");
     60 assertThrows("for (this in {x:3, y:4, z:5}) ;");
     61 assertThrows("for (this = 0;;) ;");
     62 assertThrows("this++");
     63 assertThrows("++this");
     64 assertThrows("this--");
     65 assertThrows("--this");
     66