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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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68 var cache = kApiFunctionCache; | 68 var cache = kApiFunctionCache; |
69 var serialNumber = %GetTemplateField(data, kApiSerialNumberOffset); | 69 var serialNumber = %GetTemplateField(data, kApiSerialNumberOffset); |
70 var isFunctionCached = | 70 var isFunctionCached = |
71 (serialNumber in cache) && (cache[serialNumber] != kUninitialized); | 71 (serialNumber in cache) && (cache[serialNumber] != kUninitialized); |
72 if (!isFunctionCached) { | 72 if (!isFunctionCached) { |
73 try { | 73 try { |
74 cache[serialNumber] = null; | 74 cache[serialNumber] = null; |
75 var fun = %CreateApiFunction(data); | 75 var fun = %CreateApiFunction(data); |
76 if (name) %FunctionSetName(fun, name); | 76 if (name) %FunctionSetName(fun, name); |
77 cache[serialNumber] = fun; | 77 cache[serialNumber] = fun; |
78 var prototype = %GetTemplateField(data, kApiPrototypeTemplateOffset); | |
79 var flags = %GetTemplateField(data, kApiFlagOffset); | 78 var flags = %GetTemplateField(data, kApiFlagOffset); |
80 // Note: Do not directly use an object template as a condition, our | 79 if (flags & (1 << kRemovePrototypeBit)) { |
81 // internal ToBoolean doesn't handle that! | 80 %FunctionRemovePrototype(fun); |
82 fun.prototype = typeof prototype === 'undefined' ? | 81 } else { |
83 {} : Instantiate(prototype); | 82 var prototype = %GetTemplateField(data, kApiPrototypeTemplateOffset); |
84 if (flags & (1 << kReadOnlyPrototypeBit)) { | 83 // Note: Do not directly use an object template as a condition, our |
85 %FunctionSetReadOnlyPrototype(fun); | 84 // internal ToBoolean doesn't handle that! |
86 } | 85 fun.prototype = typeof prototype === 'undefined' ? |
87 %SetProperty(fun.prototype, "constructor", fun, DONT_ENUM); | 86 {} : Instantiate(prototype); |
88 var parent = %GetTemplateField(data, kApiParentTemplateOffset); | 87 if (flags & (1 << kReadOnlyPrototypeBit)) { |
89 // Note: Do not directly use a function template as a condition, our | 88 %FunctionSetReadOnlyPrototype(fun); |
90 // internal ToBoolean doesn't handle that! | 89 } |
91 if (!(typeof parent === 'undefined')) { | 90 %SetProperty(fun.prototype, "constructor", fun, DONT_ENUM); |
92 var parent_fun = Instantiate(parent); | 91 var parent = %GetTemplateField(data, kApiParentTemplateOffset); |
93 %SetPrototype(fun.prototype, parent_fun.prototype); | 92 // Note: Do not directly use a function template as a condition, our |
| 93 // internal ToBoolean doesn't handle that! |
| 94 if (!(typeof parent === 'undefined')) { |
| 95 var parent_fun = Instantiate(parent); |
| 96 %SetPrototype(fun.prototype, parent_fun.prototype); |
| 97 } |
94 } | 98 } |
95 ConfigureTemplateInstance(fun, data); | 99 ConfigureTemplateInstance(fun, data); |
96 } catch (e) { | 100 } catch (e) { |
97 cache[serialNumber] = kUninitialized; | 101 cache[serialNumber] = kUninitialized; |
98 throw e; | 102 throw e; |
99 } | 103 } |
100 } | 104 } |
101 return cache[serialNumber]; | 105 return cache[serialNumber]; |
102 } | 106 } |
103 | 107 |
104 | 108 |
105 function ConfigureTemplateInstance(obj, data) { | 109 function ConfigureTemplateInstance(obj, data) { |
106 var properties = %GetTemplateField(data, kApiPropertyListOffset); | 110 var properties = %GetTemplateField(data, kApiPropertyListOffset); |
107 if (properties) { | 111 if (properties) { |
108 // Disable access checks while instantiating the object. | 112 // Disable access checks while instantiating the object. |
109 var requires_access_checks = %DisableAccessChecks(obj); | 113 var requires_access_checks = %DisableAccessChecks(obj); |
110 try { | 114 try { |
111 for (var i = 0; i < properties[0]; i += 3) { | 115 for (var i = 0; i < properties[0]; i += 3) { |
112 var name = properties[i + 1]; | 116 var name = properties[i + 1]; |
113 var prop_data = properties[i + 2]; | 117 var prop_data = properties[i + 2]; |
114 var attributes = properties[i + 3]; | 118 var attributes = properties[i + 3]; |
115 var value = Instantiate(prop_data, name); | 119 var value = Instantiate(prop_data, name); |
116 %SetProperty(obj, name, value, attributes); | 120 %SetProperty(obj, name, value, attributes); |
117 } | 121 } |
118 } finally { | 122 } finally { |
119 if (requires_access_checks) %EnableAccessChecks(obj); | 123 if (requires_access_checks) %EnableAccessChecks(obj); |
120 } | 124 } |
121 } | 125 } |
122 } | 126 } |
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