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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/cha.h" | 5 #include "vm/cha.h" |
6 #include "vm/class_table.h" | 6 #include "vm/class_table.h" |
7 #include "vm/flags.h" | 7 #include "vm/flags.h" |
8 #include "vm/freelist.h" | 8 #include "vm/freelist.h" |
9 #include "vm/object.h" | 9 #include "vm/object.h" |
10 #include "vm/raw_object.h" | 10 #include "vm/raw_object.h" |
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42 // Recursively collect direct and indirect subclass ids of cls. | 42 // Recursively collect direct and indirect subclass ids of cls. |
43 static void CollectSubclassIds(ZoneGrowableArray<intptr_t>* cids, | 43 static void CollectSubclassIds(ZoneGrowableArray<intptr_t>* cids, |
44 const Class& cls) { | 44 const Class& cls) { |
45 const GrowableObjectArray& cls_direct_subclasses = | 45 const GrowableObjectArray& cls_direct_subclasses = |
46 GrowableObjectArray::Handle(cls.direct_subclasses()); | 46 GrowableObjectArray::Handle(cls.direct_subclasses()); |
47 if (cls_direct_subclasses.IsNull()) { | 47 if (cls_direct_subclasses.IsNull()) { |
48 return; | 48 return; |
49 } | 49 } |
50 Class& direct_subclass = Class::Handle(); | 50 Class& direct_subclass = Class::Handle(); |
51 for (intptr_t i = 0; i < cls_direct_subclasses.Length(); i++) { | 51 for (intptr_t i = 0; i < cls_direct_subclasses.Length(); i++) { |
52 direct_subclass ^= cls_direct_subclasses.At(i); | 52 direct_subclass |= cls_direct_subclasses.At(i); |
53 intptr_t direct_subclass_id = direct_subclass.id(); | 53 intptr_t direct_subclass_id = direct_subclass.id(); |
54 if (!ContainsCid(cids, direct_subclass_id)) { | 54 if (!ContainsCid(cids, direct_subclass_id)) { |
55 cids->Add(direct_subclass_id); | 55 cids->Add(direct_subclass_id); |
56 CollectSubclassIds(cids, direct_subclass); | 56 CollectSubclassIds(cids, direct_subclass); |
57 } | 57 } |
58 } | 58 } |
59 } | 59 } |
60 | 60 |
61 | 61 |
62 ZoneGrowableArray<intptr_t>* CHA::GetSubclassIdsOf(intptr_t cid) { | 62 ZoneGrowableArray<intptr_t>* CHA::GetSubclassIdsOf(intptr_t cid) { |
63 ASSERT(cid > kInstanceCid); | 63 ASSERT(cid > kInstanceCid); |
64 const ClassTable& class_table = *Isolate::Current()->class_table(); | 64 const ClassTable& class_table = *Isolate::Current()->class_table(); |
65 const Class& cls = Class::Handle(class_table.At(cid)); | 65 const Class& cls = Class::Handle(class_table.At(cid)); |
66 ASSERT(!cls.IsNull()); | 66 ASSERT(!cls.IsNull()); |
67 ZoneGrowableArray<intptr_t>* ids = new ZoneGrowableArray<intptr_t>(); | 67 ZoneGrowableArray<intptr_t>* ids = new ZoneGrowableArray<intptr_t>(); |
68 CollectSubclassIds(ids, cls); | 68 CollectSubclassIds(ids, cls); |
69 return ids; | 69 return ids; |
70 } | 70 } |
71 | 71 |
72 | 72 |
73 bool CHA::HasOverride(const Class& cls, const String& function_name) { | 73 bool CHA::HasOverride(const Class& cls, const String& function_name) { |
74 const GrowableObjectArray& cls_direct_subclasses = | 74 const GrowableObjectArray& cls_direct_subclasses = |
75 GrowableObjectArray::Handle(cls.direct_subclasses()); | 75 GrowableObjectArray::Handle(cls.direct_subclasses()); |
76 if (cls_direct_subclasses.IsNull()) { | 76 if (cls_direct_subclasses.IsNull()) { |
77 return false; | 77 return false; |
78 } | 78 } |
79 Class& direct_subclass = Class::Handle(); | 79 Class& direct_subclass = Class::Handle(); |
80 for (intptr_t i = 0; i < cls_direct_subclasses.Length(); i++) { | 80 for (intptr_t i = 0; i < cls_direct_subclasses.Length(); i++) { |
81 direct_subclass ^= cls_direct_subclasses.At(i); | 81 direct_subclass |= cls_direct_subclasses.At(i); |
82 if (direct_subclass.LookupDynamicFunction(function_name) != | 82 if (direct_subclass.LookupDynamicFunction(function_name) != |
83 Function::null()) { | 83 Function::null()) { |
84 return true; | 84 return true; |
85 } | 85 } |
86 if (HasOverride(direct_subclass, function_name)) { | 86 if (HasOverride(direct_subclass, function_name)) { |
87 return true; | 87 return true; |
88 } | 88 } |
89 } | 89 } |
90 return false; | 90 return false; |
91 } | 91 } |
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116 ASSERT(!function.IsNull()); | 116 ASSERT(!function.IsNull()); |
117 ASSERT(function.IsDynamicFunction()); | 117 ASSERT(function.IsDynamicFunction()); |
118 const Class& function_owner = Class::Handle(function.Owner()); | 118 const Class& function_owner = Class::Handle(function.Owner()); |
119 const String& function_name = String::Handle(function.name()); | 119 const String& function_name = String::Handle(function.name()); |
120 ZoneGrowableArray<intptr_t>* cids = new ZoneGrowableArray<intptr_t>(); | 120 ZoneGrowableArray<intptr_t>* cids = new ZoneGrowableArray<intptr_t>(); |
121 CollectSubclassIds(cids, function_owner); | 121 CollectSubclassIds(cids, function_owner); |
122 return GetNamedInstanceFunctionsOf(*cids, function_name); | 122 return GetNamedInstanceFunctionsOf(*cids, function_name); |
123 } | 123 } |
124 | 124 |
125 } // namespace dart | 125 } // namespace dart |
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