diff options
Diffstat (limited to 'deps/v8/src/objects/source-text-module.h')
| -rw-r--r-- | deps/v8/src/objects/source-text-module.h | 91 |
1 files changed, 87 insertions, 4 deletions
diff --git a/deps/v8/src/objects/source-text-module.h b/deps/v8/src/objects/source-text-module.h index e6cf260e10..f1387635d0 100644 --- a/deps/v8/src/objects/source-text-module.h +++ b/deps/v8/src/objects/source-text-module.h @@ -6,6 +6,7 @@ #define V8_OBJECTS_SOURCE_TEXT_MODULE_H_ #include "src/objects/module.h" +#include "src/objects/promise.h" // Has to be the last include (doesn't have include guards): #include "src/objects/object-macros.h" @@ -28,6 +29,10 @@ class SourceTextModule // kErrored. SharedFunctionInfo GetSharedFunctionInfo() const; + // Whether or not this module is an async module. Set during module creation + // and does not change afterwards. + DECL_BOOLEAN_ACCESSORS(async) + // Get the SourceTextModuleInfo associated with the code. inline SourceTextModuleInfo info() const; @@ -41,6 +46,14 @@ class SourceTextModule static int ImportIndex(int cell_index); static int ExportIndex(int cell_index); + // Used by builtins to fulfill or reject the promise associated + // with async SourceTextModules. + static void AsyncModuleExecutionFulfilled(Isolate* isolate, + Handle<SourceTextModule> module); + static void AsyncModuleExecutionRejected(Isolate* isolate, + Handle<SourceTextModule> module, + Handle<Object> exception); + // Get the namespace object for [module_request] of [module]. If it doesn't // exist yet, it is created. static Handle<JSModuleNamespace> GetModuleNamespace( @@ -54,12 +67,54 @@ class SourceTextModule friend class Factory; friend class Module; + // Appends a tuple of module and generator to the async parent modules + // ArrayList. + inline void AddAsyncParentModule(Isolate* isolate, + Handle<SourceTextModule> module); + + // Returns a SourceTextModule, the + // ith parent in depth first traversal order of a given async child. + inline Handle<SourceTextModule> GetAsyncParentModule(Isolate* isolate, + int index); + + // Returns the number of async parent modules for a given async child. + inline int AsyncParentModuleCount(); + + inline bool HasPendingAsyncDependencies(); + inline void IncrementPendingAsyncDependencies(); + inline void DecrementPendingAsyncDependencies(); + // TODO(neis): Don't store those in the module object? DECL_INT_ACCESSORS(dfs_index) DECL_INT_ACCESSORS(dfs_ancestor_index) - // Helpers for Instantiate and Evaluate. + // Storage for boolean flags. + DECL_INT_ACCESSORS(flags) + + // Bits for flags. + static const int kAsyncBit = 0; + static const int kAsyncEvaluatingBit = 1; + + // async_evaluating, top_level_capability, pending_async_dependencies, and + // async_parent_modules are used exclusively during evaluation of async + // modules and the modules which depend on them. + // + // Whether or not this module is async and evaluating or currently evaluating + // an async child. + DECL_BOOLEAN_ACCESSORS(async_evaluating) + + // The top level promise capability of this module. Will only be defined + // for cycle roots. + DECL_ACCESSORS(top_level_capability, HeapObject) + + // The number of currently evaluating async dependencies of this module. + DECL_INT_ACCESSORS(pending_async_dependencies) + + // The parent modules of a given async dependency, use async_parent_modules() + // to retrieve the ArrayList representation. + DECL_ACCESSORS(async_parent_modules, ArrayList) + // Helpers for Instantiate and Evaluate. static void CreateExport(Isolate* isolate, Handle<SourceTextModule> module, int cell_index, Handle<FixedArray> names); static void CreateIndirectExport(Isolate* isolate, @@ -95,7 +150,16 @@ class SourceTextModule Handle<SourceTextModule> module, Zone* zone, UnorderedModuleSet* visited); + // Implementation of spec concrete method Evaluate. + static V8_WARN_UNUSED_RESULT MaybeHandle<Object> EvaluateMaybeAsync( + Isolate* isolate, Handle<SourceTextModule> module); + + // Continued implementation of spec concrete method Evaluate. static V8_WARN_UNUSED_RESULT MaybeHandle<Object> Evaluate( + Isolate* isolate, Handle<SourceTextModule> module); + + // Implementation of spec abstract operation InnerModuleEvaluation. + static V8_WARN_UNUSED_RESULT MaybeHandle<Object> InnerModuleEvaluation( Isolate* isolate, Handle<SourceTextModule> module, ZoneForwardList<Handle<SourceTextModule>>* stack, unsigned* dfs_index); @@ -103,6 +167,24 @@ class SourceTextModule Isolate* isolate, Handle<SourceTextModule> module, ZoneForwardList<Handle<SourceTextModule>>* stack, Status new_status); + // Implementation of spec GetAsyncCycleRoot. + static V8_WARN_UNUSED_RESULT Handle<SourceTextModule> GetAsyncCycleRoot( + Isolate* isolate, Handle<SourceTextModule> module); + + // Implementation of spec ExecuteModule is broken up into + // InnerExecuteAsyncModule for asynchronous modules and ExecuteModule + // for synchronous modules. + static V8_WARN_UNUSED_RESULT MaybeHandle<Object> InnerExecuteAsyncModule( + Isolate* isolate, Handle<SourceTextModule> module, + Handle<JSPromise> capability); + + static V8_WARN_UNUSED_RESULT MaybeHandle<Object> ExecuteModule( + Isolate* isolate, Handle<SourceTextModule> module); + + // Implementation of spec ExecuteAsyncModule. + static void ExecuteAsyncModule(Isolate* isolate, + Handle<SourceTextModule> module); + static void Reset(Isolate* isolate, Handle<SourceTextModule> module); TQ_OBJECT_CONSTRUCTORS(SourceTextModule) @@ -169,9 +251,10 @@ class SourceTextModuleInfoEntry DECL_INT_ACCESSORS(end_pos) static Handle<SourceTextModuleInfoEntry> New( - Isolate* isolate, Handle<HeapObject> export_name, - Handle<HeapObject> local_name, Handle<HeapObject> import_name, - int module_request, int cell_index, int beg_pos, int end_pos); + Isolate* isolate, Handle<PrimitiveHeapObject> export_name, + Handle<PrimitiveHeapObject> local_name, + Handle<PrimitiveHeapObject> import_name, int module_request, + int cell_index, int beg_pos, int end_pos); TQ_OBJECT_CONSTRUCTORS(SourceTextModuleInfoEntry) }; |