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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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| 1572 if (value > 0) { | 1572 if (value > 0) { |
| 1573 // The internal field count is set by the constructor function's | 1573 // The internal field count is set by the constructor function's |
| 1574 // construct code, so we ensure that there is a constructor | 1574 // construct code, so we ensure that there is a constructor |
| 1575 // function to do the setting. | 1575 // function to do the setting. |
| 1576 EnsureConstructor(isolate, this); | 1576 EnsureConstructor(isolate, this); |
| 1577 } | 1577 } |
| 1578 Utils::OpenHandle(this)->set_internal_field_count(i::Smi::FromInt(value)); | 1578 Utils::OpenHandle(this)->set_internal_field_count(i::Smi::FromInt(value)); |
| 1579 } | 1579 } |
| 1580 | 1580 |
| 1581 | 1581 |
| 1582 // --- S c r i p t D a t a --- | |
| 1583 | |
| 1584 | |
| 1585 ScriptData* ScriptData::PreCompile(v8::Handle<String> source) { | |
| 1586 i::Handle<i::String> str = Utils::OpenHandle(*source); | |
| 1587 i::Isolate* isolate = str->GetIsolate(); | |
| 1588 if (str->IsExternalTwoByteString()) { | |
| 1589 i::ExternalTwoByteStringUtf16CharacterStream stream( | |
| 1590 i::Handle<i::ExternalTwoByteString>::cast(str), 0, str->length()); | |
| 1591 return i::PreParserApi::PreParse(isolate, &stream); | |
| 1592 } else { | |
| 1593 i::GenericStringUtf16CharacterStream stream(str, 0, str->length()); | |
| 1594 return i::PreParserApi::PreParse(isolate, &stream); | |
| 1595 } | |
| 1596 } | |
| 1597 | |
| 1598 | |
| 1599 ScriptData* ScriptData::New(const char* data, int length) { | |
| 1600 // Return an empty ScriptData if the length is obviously invalid. | |
| 1601 if (length % sizeof(unsigned) != 0) { | |
| 1602 return new i::ScriptDataImpl(); | |
| 1603 } | |
| 1604 | |
| 1605 // Copy the data to ensure it is properly aligned. | |
| 1606 int deserialized_data_length = length / sizeof(unsigned); | |
| 1607 // If aligned, don't create a copy of the data. | |
| 1608 if (reinterpret_cast<intptr_t>(data) % sizeof(unsigned) == 0) { | |
| 1609 return new i::ScriptDataImpl(data, length); | |
| 1610 } | |
| 1611 // Copy the data to align it. | |
| 1612 unsigned* deserialized_data = i::NewArray<unsigned>(deserialized_data_length); | |
| 1613 i::CopyBytes(reinterpret_cast<char*>(deserialized_data), | |
| 1614 data, static_cast<size_t>(length)); | |
| 1615 | |
| 1616 return new i::ScriptDataImpl( | |
| 1617 i::Vector<unsigned>(deserialized_data, deserialized_data_length)); | |
| 1618 } | |
| 1619 | |
| 1620 | |
| 1621 // --- S c r i p t s --- | 1582 // --- S c r i p t s --- |
| 1622 | 1583 |
| 1623 | 1584 |
| 1624 // Internally, UnboundScript is a SharedFunctionInfo, and Script is a | 1585 // Internally, UnboundScript is a SharedFunctionInfo, and Script is a |
| 1625 // JSFunction. | 1586 // JSFunction. |
| 1626 | 1587 |
| 1627 ScriptCompiler::CachedData::CachedData(const uint8_t* data_, int length_, | 1588 ScriptCompiler::CachedData::CachedData(const uint8_t* data_, int length_, |
| 1628 BufferPolicy buffer_policy_) | 1589 BufferPolicy buffer_policy_) |
| 1629 : data(data_), length(length_), buffer_policy(buffer_policy_) {} | 1590 : data(data_), length(length_), buffer_policy(buffer_policy_) {} |
| 1630 | 1591 |
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| 1724 i::Handle<i::Object> obj = Utils::OpenHandle(this); | 1685 i::Handle<i::Object> obj = Utils::OpenHandle(this); |
| 1725 return ToApiHandle<UnboundScript>( | 1686 return ToApiHandle<UnboundScript>( |
| 1726 i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared())); | 1687 i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared())); |
| 1727 } | 1688 } |
| 1728 | 1689 |
| 1729 | 1690 |
| 1730 Local<UnboundScript> ScriptCompiler::CompileUnbound( | 1691 Local<UnboundScript> ScriptCompiler::CompileUnbound( |
| 1731 Isolate* v8_isolate, | 1692 Isolate* v8_isolate, |
| 1732 Source* source, | 1693 Source* source, |
| 1733 CompileOptions options) { | 1694 CompileOptions options) { |
| 1734 i::ScriptDataImpl* script_data_impl = NULL; | 1695 i::ScriptData* script_data_impl = NULL; |
| 1735 i::CachedDataMode cached_data_mode = i::NO_CACHED_DATA; | 1696 i::CachedDataMode cached_data_mode = i::NO_CACHED_DATA; |
| 1736 if (options & kProduceDataToCache) { | 1697 if (options & kProduceDataToCache) { |
| 1737 cached_data_mode = i::PRODUCE_CACHED_DATA; | 1698 cached_data_mode = i::PRODUCE_CACHED_DATA; |
| 1738 ASSERT(source->cached_data == NULL); | 1699 ASSERT(source->cached_data == NULL); |
| 1739 if (source->cached_data) { | 1700 if (source->cached_data) { |
| 1740 // Asked to produce cached data even though there is some already -> not | 1701 // Asked to produce cached data even though there is some already -> not |
| 1741 // good. In release mode, try to do the right thing: Just regenerate the | 1702 // good. In release mode, try to do the right thing: Just regenerate the |
| 1742 // data. | 1703 // data. |
| 1743 delete source->cached_data; | 1704 delete source->cached_data; |
| 1744 source->cached_data = NULL; | 1705 source->cached_data = NULL; |
| 1745 } | 1706 } |
| 1746 } else if (source->cached_data) { | 1707 } else if (source->cached_data) { |
| 1747 // FIXME(marja): Make compiler use CachedData directly. Aligning needs to be | 1708 // ScriptData takes care of aligning, in case the data is not aligned |
| 1748 // taken care of. | 1709 // correctly. |
| 1749 script_data_impl = static_cast<i::ScriptDataImpl*>(ScriptData::New( | 1710 script_data_impl = i::ScriptData::New( |
| 1750 reinterpret_cast<const char*>(source->cached_data->data), | 1711 reinterpret_cast<const char*>(source->cached_data->data), |
| 1751 source->cached_data->length)); | 1712 source->cached_data->length); |
| 1752 // We assert that the pre-data is sane, even though we can actually | 1713 // We assert that the pre-data is sane, even though we can actually |
| 1753 // handle it if it turns out not to be in release mode. | 1714 // handle it if it turns out not to be in release mode. |
| 1754 ASSERT(script_data_impl->SanityCheck()); | 1715 ASSERT(script_data_impl->SanityCheck()); |
| 1755 if (script_data_impl->SanityCheck()) { | 1716 if (script_data_impl->SanityCheck()) { |
| 1756 cached_data_mode = i::CONSUME_CACHED_DATA; | 1717 cached_data_mode = i::CONSUME_CACHED_DATA; |
| 1757 } else { | 1718 } else { |
| 1758 // If the pre-data isn't sane we simply ignore it. | 1719 // If the pre-data isn't sane we simply ignore it. |
| 1759 delete script_data_impl; | 1720 delete script_data_impl; |
| 1760 script_data_impl = NULL; | 1721 script_data_impl = NULL; |
| 1761 delete source->cached_data; | 1722 delete source->cached_data; |
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| 1830 LOG_API(isolate, "ScriptCompiler::CompiletBound()"); | 1791 LOG_API(isolate, "ScriptCompiler::CompiletBound()"); |
| 1831 ENTER_V8(isolate); | 1792 ENTER_V8(isolate); |
| 1832 Local<UnboundScript> generic = | 1793 Local<UnboundScript> generic = |
| 1833 CompileUnbound(v8_isolate, source, options); | 1794 CompileUnbound(v8_isolate, source, options); |
| 1834 if (generic.IsEmpty()) return Local<Script>(); | 1795 if (generic.IsEmpty()) return Local<Script>(); |
| 1835 return generic->BindToCurrentContext(); | 1796 return generic->BindToCurrentContext(); |
| 1836 } | 1797 } |
| 1837 | 1798 |
| 1838 | 1799 |
| 1839 Local<Script> Script::Compile(v8::Handle<String> source, | 1800 Local<Script> Script::Compile(v8::Handle<String> source, |
| 1840 v8::ScriptOrigin* origin, | 1801 v8::ScriptOrigin* origin) { |
| 1841 ScriptData* script_data) { | |
| 1842 i::Handle<i::String> str = Utils::OpenHandle(*source); | 1802 i::Handle<i::String> str = Utils::OpenHandle(*source); |
| 1843 ScriptCompiler::CachedData* cached_data = NULL; | |
| 1844 if (script_data) { | |
| 1845 cached_data = new ScriptCompiler::CachedData( | |
| 1846 reinterpret_cast<const uint8_t*>(script_data->Data()), | |
| 1847 script_data->Length()); | |
| 1848 } | |
| 1849 if (origin) { | 1803 if (origin) { |
| 1850 ScriptCompiler::Source script_source(source, *origin, cached_data); | 1804 ScriptCompiler::Source script_source(source, *origin); |
| 1851 return ScriptCompiler::Compile( | 1805 return ScriptCompiler::Compile( |
| 1852 reinterpret_cast<v8::Isolate*>(str->GetIsolate()), | 1806 reinterpret_cast<v8::Isolate*>(str->GetIsolate()), |
| 1853 &script_source); | 1807 &script_source); |
| 1854 } | 1808 } |
| 1855 ScriptCompiler::Source script_source(source, cached_data); | 1809 ScriptCompiler::Source script_source(source); |
| 1856 return ScriptCompiler::Compile( | 1810 return ScriptCompiler::Compile( |
| 1857 reinterpret_cast<v8::Isolate*>(str->GetIsolate()), | 1811 reinterpret_cast<v8::Isolate*>(str->GetIsolate()), |
| 1858 &script_source); | 1812 &script_source); |
| 1859 } | 1813 } |
| 1860 | 1814 |
| 1861 | 1815 |
| 1862 Local<Script> Script::Compile(v8::Handle<String> source, | 1816 Local<Script> Script::Compile(v8::Handle<String> source, |
| 1863 v8::Handle<String> file_name) { | 1817 v8::Handle<String> file_name) { |
| 1864 ScriptOrigin origin(file_name); | 1818 ScriptOrigin origin(file_name); |
| 1865 return Compile(source, &origin); | 1819 return Compile(source, &origin); |
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| 7694 Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate()); | 7648 Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate()); |
| 7695 Address callback_address = | 7649 Address callback_address = |
| 7696 reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback)); | 7650 reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback)); |
| 7697 VMState<EXTERNAL> state(isolate); | 7651 VMState<EXTERNAL> state(isolate); |
| 7698 ExternalCallbackScope call_scope(isolate, callback_address); | 7652 ExternalCallbackScope call_scope(isolate, callback_address); |
| 7699 callback(info); | 7653 callback(info); |
| 7700 } | 7654 } |
| 7701 | 7655 |
| 7702 | 7656 |
| 7703 } } // namespace v8::internal | 7657 } } // namespace v8::internal |
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