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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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