v8::internal::Utf16CharaterStream类

本文详细介绍了Ecma-262规范中关于使用UTF16编码处理JavaScript字符串的方法,包括基本的流操作、缓冲流处理、字符串流读取及UTF8到UTF16的转换。

Ecma-262中规定要求使用utf16来分析javascript,如上的一系列类就是把源数据作为一个流输入。基类Utf16CharacterStream提供基本的advance和pushback,seekforward方法,

BufferedUtf16CharacterStream类中加入了一个buffer用于缓冲从数据中的读取到的数据

GenericStringUtf16CharacterStream把String类作为数据源读取数据

Utf8ToUtf16CharacterStream类用于从原始的utf8数据转换为utf16格式

5: 0x100331ea0 v8::internal::(anonymous namespace)::CaptureStackTrace(v8::internal::Isolate*, v8::internal::Handle<v8::internal::Object>, v8::internal::(anonymous namespace)::CaptureStackTraceOptions) [/Users/lyy_mac/.nvm/versions/node/v12.22.12/bin/node] 16: 0x100332001 v8::internal::Isolate::CaptureAndSetSimpleStackTrace(v8::internal::Handle<v8::internal::JSReceiver>, v8::internal::FrameSkipMode, v8::internal::Handle<v8::internal::Object>) [/Users/lyy_mac/.nvm/versions/node/v12.22.12/bin/node] 17: 0x100344207 v8::internal::ErrorUtils::Construct(v8::internal::Isolate*, v8::internal::Handle<v8::internal::JSFunction>, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, v8::internal::FrameSkipMode, v8::internal::Handle<v8::internal::Object>, v8::internal::ErrorUtils::StackTraceCollection) [/Users/lyy_mac/.nvm/versions/node/v12.22.12/bin/node] 18: 0x10034449c v8::internal::ErrorUtils::MakeGenericError(v8::internal::Isolate*, v8::internal::Handle<v8::internal::JSFunction>, v8::internal::MessageTemplate, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, v8::internal::FrameSkipMode) [/Users/lyy_mac/.nvm/versions/node/v12.22.12/bin/node] 19: 0x1003670fd v8::internal::Factory::NewError(v8::internal::Handle<v8::internal::JSFunction>, v8::internal::MessageTemplate, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>) [/Users/lyy_mac/.nvm/versions/node/v12.22.12/bin/node] 20: 0x1006ae227 v8::internal::Runtime_ThrowCalledNonCallable(int, unsigned long*, v8::internal::Isolate*) [/Users/lyy_mac/.nvm/versions/node/v12.22.12/bin/node] 21: 0x100a050d9 Builtins_CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit [/Users/lyy_mac/.nvm/versions/node/v12.22.12/bin/node]
03-08
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