Prepare StackFrame hierarchy & iterators for WASM

src/isolate.cc

 // Copyright 2012 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/isolate.h"
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
@@ skipping 669 matching lines @@
     int frame_limit, StackTrace::StackTraceOptions options) {
   CaptureStackTraceHelper helper(this, options);
 
   // Ensure no negative values.
   int limit = Max(frame_limit, 0);
   Handle<JSArray> stack_trace = factory()->NewJSArray(frame_limit);
 
   StackTraceFrameIterator it(this);
   int frames_seen = 0;
   while (!it.done() && (frames_seen < limit)) {
-    JavaScriptFrame* frame = it.frame();
+    StandardFrame* frame = it.frame();
     // Set initial size to the maximum inlining level + 1 for the outermost
     // function.
     List<FrameSummary> frames(FLAG_max_inlining_levels + 1);
     frame->Summarize(&frames);
     for (int i = frames.length() - 1; i >= 0 && frames_seen < limit; i--) {
       Handle<JSFunction> fun = frames[i].function();
       // Filter frames from other security contexts.
       if (!(options & StackTrace::kExposeFramesAcrossSecurityOrigins) &&
           !this->context()->HasSameSecurityTokenAs(fun->context())) continue;
       int position =
@@ skipping 610 matching lines @@
   // Re-throw the exception to avoid getting repeated error reporting.
   return ReThrow(thrown);
 }
 
 
 void Isolate::PrintCurrentStackTrace(FILE* out) {
   StackTraceFrameIterator it(this);
   while (!it.done()) {
     HandleScope scope(this);
     // Find code position if recorded in relocation info.
-    JavaScriptFrame* frame = it.frame();
+    StandardFrame* frame = it.frame();
     Code* code = frame->LookupCode();
     int offset = static_cast<int>(frame->pc() - code->instruction_start());
     int pos = frame->LookupCode()->SourcePosition(offset);
     Handle<Object> pos_obj(Smi::FromInt(pos), this);
     // Fetch function and receiver.
     Handle<JSFunction> fun(frame->function());
     Handle<Object> recv(frame->receiver(), this);
     // Advance to the next JavaScript frame and determine if the
     // current frame is the top-level frame.
     it.Advance();
     Handle<Object> is_top_level = factory()->ToBoolean(it.done());
     // Generate and print stack trace line.
     Handle<String> line =
         Execution::GetStackTraceLine(recv, fun, pos_obj, is_top_level);
     if (line->length() > 0) {
       line->PrintOn(out);
       PrintF(out, "\n");
     }
   }
 }
 
 
 bool Isolate::ComputeLocation(MessageLocation* target) {
   StackTraceFrameIterator it(this);
   if (!it.done()) {
-    JavaScriptFrame* frame = it.frame();
+    StandardFrame* frame = it.frame();
     JSFunction* fun = frame->function();
     Object* script = fun->shared()->script();
     if (script->IsScript() &&
         !(Script::cast(script)->source()->IsUndefined())) {
       Handle<Script> casted_script(Script::cast(script));
       // Compute the location from the function and the relocation info of the
       // baseline code. For optimized code this will use the deoptimization
       // information to get canonical location information.
       List<FrameSummary> frames(FLAG_max_inlining_levels + 1);
-      it.frame()->Summarize(&frames);
+      frame->Summarize(&frames);
       FrameSummary& summary = frames.last();
       int pos = summary.abstract_code()->SourcePosition(summary.code_offset());
       *target = MessageLocation(casted_script, pos, pos + 1, handle(fun));
       return true;
     }
   }
   return false;
 }
 
 
@@ skipping 1621 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8