Ignore:
Timestamp:
Jan 14, 2019, 12:27:17 PM (6 years ago)
Author:
[email protected]
Message:

JSC should have a module loader API
​https://bugs.webkit.org/show_bug.cgi?id=191121

Reviewed by Michael Saboff.

This patch adds a new delegate to JSContext that is called to fetch
any resolved module. The resolution of a module identifier is computed
as if it were a URL on the web with the caveat that it must be a file URL.

A new class JSScript has also been added that is similar to JSScriptRef.
Right now all JSScripts are copied into memory. In the future we should
mmap the provided file into memory so the OS can evict it to disk under
pressure. Additionally, the API does not make use of the code signing path
nor the bytecode caching path, which we will add in subsequent patches.

Lastly, a couple of new convenience methods have been added. C API
conversion, can now toRef a JSValue with just a vm rather than
requiring an ExecState. Secondly, there is now a call wrapper that
does not require CallData and CallType since many places don't
care about this.

  • API/APICast.h:

(toRef):

  • API/JSAPIGlobalObject.cpp: Copied from Source/JavaScriptCore/API/JSVirtualMachineInternal.h.
  • API/JSAPIGlobalObject.h: Added.

(JSC::JSAPIGlobalObject::create):
(JSC::JSAPIGlobalObject::createStructure):
(JSC::JSAPIGlobalObject::JSAPIGlobalObject):

  • API/JSAPIGlobalObject.mm: Added.

(JSC::JSAPIGlobalObject::moduleLoaderResolve):
(JSC::JSAPIGlobalObject::moduleLoaderImportModule):
(JSC::JSAPIGlobalObject::moduleLoaderFetch):
(JSC::JSAPIGlobalObject::moduleLoaderCreateImportMetaProperties):

  • API/JSAPIValueWrapper.h:

(JSC::jsAPIValueWrapper): Deleted.

  • API/JSContext.h:
  • API/JSContext.mm:

(-[JSContext moduleLoaderDelegate]):
(-[JSContext setModuleLoaderDelegate:]):

  • API/JSContextInternal.h:
  • API/JSContextPrivate.h:
  • API/JSContextRef.cpp:

(JSGlobalContextCreateInGroup):

  • API/JSScript.h: Added.
  • API/JSScript.mm: Added.

(+[JSScript scriptWithSource:inVirtualMachine:]):
(fillBufferWithContentsOfFile):
(+[JSScript scriptFromUTF8File:inVirtualMachine:withCodeSigning:andBytecodeCache:]):
(getJSScriptSourceCode):

  • API/JSScriptInternal.h: Copied from Source/JavaScriptCore/API/JSVirtualMachineInternal.h.
  • API/JSValueInternal.h:
  • API/JSVirtualMachineInternal.h:
  • API/tests/testapi.mm:

(+[JSContextFetchDelegate contextWithBlockForFetch:]):
(-[JSContextFetchDelegate context:fetchModuleForIdentifier:withResolveHandler:andRejectHandler:]):
(checkModuleCodeRan):
(checkModuleWasRejected):
(testFetch):
(testFetchWithTwoCycle):
(testFetchWithThreeCycle):
(testLoaderResolvesAbsoluteScriptURL):
(testLoaderRejectsNilScriptURL):
(testLoaderRejectsFailedFetch):
(testImportModuleTwice):
(+[JSContextFileLoaderDelegate newContext]):
(resolvePathToScripts):
(-[JSContextFileLoaderDelegate context:fetchModuleForIdentifier:withResolveHandler:andRejectHandler:]):
(testLoadBasicFile):
(testObjectiveCAPI):

  • API/tests/testapiScripts/basic.js: Copied from Source/JavaScriptCore/API/JSVirtualMachineInternal.h.
  • JavaScriptCore.xcodeproj/project.pbxproj:
  • Sources.txt:
  • SourcesCocoa.txt:
  • config.h:
  • postprocess-headers.sh:
  • runtime/CallData.cpp:

(JSC::call):

  • runtime/CallData.h:
  • runtime/Completion.cpp:

(JSC::loadAndEvaluateModule):

  • runtime/Completion.h:
  • runtime/JSCast.h:

(JSC::jsSecureCast):

  • runtime/JSGlobalObject.cpp:

(JSC::createProxyProperty):

File:
1 edited

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