| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "v8.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| void LookupResult::Iterate(ObjectVisitor* visitor) { |
| LookupResult* current = this; // Could be NULL. |
| while (current != NULL) { |
| visitor->VisitPointer(BitCast<Object**>(¤t->holder_)); |
| current = current->next_; |
| } |
| } |
| |
| |
| #ifdef OBJECT_PRINT |
| void LookupResult::Print(FILE* out) { |
| if (!IsFound()) { |
| PrintF(out, "Not Found\n"); |
| return; |
| } |
| |
| PrintF(out, "LookupResult:\n"); |
| PrintF(out, " -cacheable = %s\n", IsCacheable() ? "true" : "false"); |
| PrintF(out, " -attributes = %x\n", GetAttributes()); |
| switch (type()) { |
| case NORMAL: |
| PrintF(out, " -type = normal\n"); |
| PrintF(out, " -entry = %d", GetDictionaryEntry()); |
| break; |
| case MAP_TRANSITION: |
| PrintF(out, " -type = map transition\n"); |
| PrintF(out, " -map:\n"); |
| GetTransitionMap()->Print(out); |
| PrintF(out, "\n"); |
| break; |
| case CONSTANT_FUNCTION: |
| PrintF(out, " -type = constant function\n"); |
| PrintF(out, " -function:\n"); |
| GetConstantFunction()->Print(out); |
| PrintF(out, "\n"); |
| break; |
| case FIELD: |
| PrintF(out, " -type = field\n"); |
| PrintF(out, " -index = %d", GetFieldIndex()); |
| PrintF(out, "\n"); |
| break; |
| case CALLBACKS: |
| PrintF(out, " -type = call backs\n"); |
| PrintF(out, " -callback object:\n"); |
| GetCallbackObject()->Print(out); |
| break; |
| case HANDLER: |
| PrintF(out, " -type = lookup proxy\n"); |
| break; |
| case INTERCEPTOR: |
| PrintF(out, " -type = lookup interceptor\n"); |
| break; |
| case CONSTANT_TRANSITION: |
| PrintF(out, " -type = constant property transition\n"); |
| PrintF(out, " -map:\n"); |
| GetTransitionMap()->Print(out); |
| PrintF(out, "\n"); |
| break; |
| case NONEXISTENT: |
| UNREACHABLE(); |
| break; |
| } |
| } |
| |
| |
| void Descriptor::Print(FILE* out) { |
| PrintF(out, "Descriptor "); |
| GetKey()->ShortPrint(out); |
| PrintF(out, " @ "); |
| GetValue()->ShortPrint(out); |
| PrintF(out, " %d\n", GetDetails().index()); |
| } |
| |
| |
| #endif |
| |
| |
| bool Descriptor::ContainsTransition() { |
| switch (details_.type()) { |
| case MAP_TRANSITION: |
| case CONSTANT_TRANSITION: |
| return true; |
| case CALLBACKS: { |
| if (!value_->IsAccessorPair()) return false; |
| AccessorPair* accessors = AccessorPair::cast(value_); |
| return accessors->getter()->IsMap() || accessors->setter()->IsMap(); |
| } |
| case NORMAL: |
| case FIELD: |
| case CONSTANT_FUNCTION: |
| case HANDLER: |
| case INTERCEPTOR: |
| return false; |
| case NONEXISTENT: |
| UNREACHABLE(); |
| break; |
| } |
| UNREACHABLE(); // Keep the compiler happy. |
| return false; |
| } |
| |
| |
| } } // namespace v8::internal |