[debugger] infrastructure for side-effect-free debug-evaluate.

src/api-arguments.cc

Index: src/api-arguments.cc
diff --git a/src/api-arguments.cc b/src/api-arguments.cc
index f8d6c8fcc3ddda3ee8d83e5419be4b7127ff8f8a..2dd97004a8992b3a294e15941e9330f24bd3eae7 100644
--- a/src/api-arguments.cc
+++ b/src/api-arguments.cc
@@ -4,6 +4,7 @@
 
 #include "src/api-arguments.h"
 
+#include "src/debug/debug.h"
 #include "src/tracing/trace-event.h"
 #include "src/vm-state-inl.h"
 
@@ -12,6 +13,10 @@ namespace internal {
 
 Handle<Object> FunctionCallbackArguments::Call(FunctionCallback f) {
   Isolate* isolate = this->isolate();
+  if (isolate->needs_side_effect_check() &&
+      !isolate->debug()->PerformSideEffectCheckForCallback(FUNCTION_ADDR(f))) {
+    return Handle<Object>();
+  }
   RuntimeCallTimerScope timer(isolate, &RuntimeCallStats::FunctionCallback);
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));
@@ -23,6 +28,10 @@ Handle<Object> FunctionCallbackArguments::Call(FunctionCallback f) {
 Handle<JSObject> PropertyCallbackArguments::Call(
     IndexedPropertyEnumeratorCallback f) {
   Isolate* isolate = this->isolate();
+  if (isolate->needs_side_effect_check() &&
+      !isolate->debug()->PerformSideEffectCheckForCallback(FUNCTION_ADDR(f))) {
+    return Handle<JSObject>();
+  }
   RuntimeCallTimerScope timer(isolate, &RuntimeCallStats::PropertyCallback);
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));
@@ -31,5 +40,10 @@ Handle<JSObject> PropertyCallbackArguments::Call(
   return GetReturnValue<JSObject>(isolate);
 }
 
+bool PropertyCallbackArguments::PerformSideEffectCheck(Isolate* isolate,
+                                                       Address function) {
+  return isolate->debug()->PerformSideEffectCheckForCallback(function);
+}
+
 }  // namespace internal
 }  // namespace v8