1 // Copyright 2010 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 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Simple tests of the various kinds of variable references in the 29 // implementstion. 30 31 // Global variables. 32 var x = 0; 33 function f0() { return x; } 34 assertEquals(0, f0()); 35 36 37 // Parameters. 38 function f1(x) { return x; } 39 assertEquals(1, f1(1)); 40 41 42 // Stack-allocated locals. 43 function f2() { var x = 2; return x; } 44 assertEquals(2, f2()); 45 46 47 // Context-allocated locals. Local function forces x into f3's context. 48 function f3(x) { 49 function g() { return x; } 50 return x; 51 } 52 assertEquals(3, f3(3)); 53 54 // Local function reads x from an outer context. 55 function f4(x) { 56 function g() { return x; } 57 return g(); 58 } 59 assertEquals(4, f4(4)); 60 61 62 // Lookup slots. 'With' forces x to be looked up at runtime. 63 function f5(x) { 64 with ({}) return x; 65 } 66 assertEquals(5, f5(5)); 67 68 69 // Parameters rewritten to property accesses. Using the name 'arguments' 70 // (even if it shadows the arguments object) forces all parameters to be 71 // rewritten to explicit property accesses. 72 function f6(arguments) { return arguments; } 73 assertEquals(6, f6(6)); 74
