diff options
Diffstat (limited to 'js/src/frontend/Stencil.cpp')
| -rw-r--r-- | js/src/frontend/Stencil.cpp | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/js/src/frontend/Stencil.cpp b/js/src/frontend/Stencil.cpp index 30d1588415..67ed2a90ca 100644 --- a/js/src/frontend/Stencil.cpp +++ b/js/src/frontend/Stencil.cpp @@ -759,6 +759,29 @@ void ScopeContext::cacheEnclosingScope(const InputScope& enclosingScope) { MOZ_CRASH("Malformed scope chain"); } +// Given an input scope, possibly refine this to a more precise scope. +// This is used during eval in the debugger to provide the appropriate scope and +// ThisBinding kind and environment, which is key to making private field eval +// work correctly. +// +// The trick here is that an eval may have a non-syntatic scope but nevertheless +// have an 'interesting' environment which can be traversed to find the +// appropriate scope the the eval to function as desired. See the diagram below. +// +// Eval Scope Eval Env Frame Env Frame Scope +// ============ ============= ========= ============= +// +// NonSyntactic +// | +// v +// null DebugEnvProxy LexicalScope +// | | +// v v +// DebugEnvProxy --> CallObj --> FunctionScope +// | | | +// v v v +// ... ... ... +// InputScope ScopeContext::determineEffectiveScope(InputScope& scope, JSObject* environment) { MOZ_ASSERT(effectiveScopeHops == 0); @@ -4286,8 +4309,8 @@ void js::DumpFunctionFlagsItems(js::JSONPrinter& json, case FunctionFlags::Flags::LAMBDA: json.value("LAMBDA"); break; - case FunctionFlags::Flags::WASM_JIT_ENTRY: - json.value("WASM_JIT_ENTRY"); + case FunctionFlags::Flags::NATIVE_JIT_ENTRY: + json.value("NATIVE_JIT_ENTRY"); break; case FunctionFlags::Flags::HAS_INFERRED_NAME: json.value("HAS_INFERRED_NAME"); |