[wasm] Implement frame inspection for interpreted frames

src/wasm/wasm-objects.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/wasm/wasm-objects.h"
 #include "src/utils.h"
 
 #include "src/base/iterator.h"
 #include "src/debug/debug-interface.h"
 #include "src/wasm/module-decoder.h"
@@ skipping 1115 matching lines @@
   for (Handle<WasmInstanceObject> instance :
        iterate_compiled_module_instance_chain(isolate, compiled_module)) {
     Handle<WasmDebugInfo> debug_info =
         WasmInstanceObject::GetOrCreateDebugInfo(instance);
     WasmDebugInfo::SetBreakpoint(debug_info, func_index, offset_in_func);
   }
 
   return true;
 }
 
+MaybeHandle<FixedArray> WasmCompiledModule::CheckBreakPoints(int position) {
+  Isolate* isolate = GetIsolate();
+  if (!shared()->has_breakpoint_infos()) return {};
+
+  Handle<FixedArray> breakpoint_infos(shared()->breakpoint_infos(), isolate);
+  int insert_pos =
+      FindBreakpointInfoInsertPos(isolate, breakpoint_infos, position);
+  if (insert_pos >= breakpoint_infos->length()) return {};
+
+  Handle<Object> maybe_breakpoint_info(breakpoint_infos->get(insert_pos),
+                                       isolate);
+  if (maybe_breakpoint_info->IsUndefined(isolate)) return {};
+  Handle<BreakPointInfo> breakpoint_info =
+      Handle<BreakPointInfo>::cast(maybe_breakpoint_info);
+  if (breakpoint_info->source_position() != position) return {};
+
+  Handle<Object> breakpoint_objects(breakpoint_info->break_point_objects(),
+                                    isolate);
+  return isolate->debug()->GetHitBreakPointObjects(breakpoint_objects);
+}
+
 Handle<WasmInstanceWrapper> WasmInstanceWrapper::New(
     Isolate* isolate, Handle<WasmInstanceObject> instance) {
   Handle<FixedArray> array =
       isolate->factory()->NewFixedArray(kWrapperPropertyCount, TENURED);
   Handle<WasmInstanceWrapper> instance_wrapper(
       reinterpret_cast<WasmInstanceWrapper*>(*array), isolate);
   instance_wrapper->set_instance_object(instance, isolate);
   return instance_wrapper;
 }
 
@@ skipping 10 matching lines @@
       !array->get(kPreviousInstanceWrapper)->IsFixedArray())
     return false;
   return true;
 }
 
 void WasmInstanceWrapper::set_instance_object(Handle<JSObject> instance,
                                               Isolate* isolate) {
   Handle<WeakCell> cell = isolate->factory()->NewWeakCell(instance);
   set(kWrapperInstanceObject, *cell);
 }