Create fewer local v8::TryCatch objects in generated bindings code

Source/bindings/tests/results/V8TestInterface.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "config.h"
 #if ENABLE(CONDITION)
 #include "V8TestInterface.h"
 
@@ skipping 794 matching lines @@
     TestInterfaceImplementationV8Internal::TestInterfaceImplementationReplaceableAttributeSetter(name, v8Value, info);
 }
 
 static void voidMethodTestInterfaceEmptyArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (UNLIKELY(info.Length() < 1)) {
         throwArityTypeErrorForMethod("voidMethodTestInterfaceEmptyArg", "TestInterface", 1, info.Length(), info.GetIsolate());
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
-    if (info.Length() > 0 && !V8TestInterfaceEmpty::hasInstance(info[0], info.GetIsolate())) {
-        throwTypeError(ExceptionMessages::failedToExecute("voidMethodTestInterfaceEmptyArg", "TestInterface", "parameter 1 is not of type 'TestInterfaceEmpty'."), info.GetIsolate());
-        return;
+    TestInterfaceEmpty* testInterfaceEmptyArg;
+    {
+        v8::TryCatch block;
+        if (info.Length() > 0 && !V8TestInterfaceEmpty::hasInstance(info[0], info.GetIsolate())) {
+            throwTypeError(ExceptionMessages::failedToExecute("voidMethodTestInterfaceEmptyArg", "TestInterface", "parameter 1 is not of type 'TestInterfaceEmpty'."), info.GetIsolate());
+            block.ReThrow();
+            return;
+        }
+        TONATIVE_VOID_INTERNAL(testInterfaceEmptyArg, V8TestInterfaceEmpty::toNativeWithTypeCheck(info.GetIsolate(), info[0]));
     }
-    TONATIVE_VOID(TestInterfaceEmpty*, testInterfaceEmptyArg, V8TestInterfaceEmpty::toNativeWithTypeCheck(info.GetIsolate(), info[0]));
     impl->voidMethodTestInterfaceEmptyArg(testInterfaceEmptyArg);
 }
 
 static void voidMethodTestInterfaceEmptyArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::voidMethodTestInterfaceEmptyArgMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void voidMethodDoubleArgFloatArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (UNLIKELY(info.Length() < 2)) {
         throwArityTypeErrorForMethod("voidMethodDoubleArgFloatArg", "TestInterface", 2, info.Length(), info.GetIsolate());
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
-    TONATIVE_VOID(double, doubleArg, static_cast<double>(info[0]->NumberValue()));
-    if (!std::isfinite(doubleArg)) {
-        throwTypeError(ExceptionMessages::failedToExecute("voidMethodDoubleArgFloatArg", "TestInterface", "double parameter 1 is non-finite."), info.GetIsolate());
-        return;
-    }
-    TONATIVE_VOID(float, floatArg, static_cast<float>(info[1]->NumberValue()));
-    if (!std::isfinite(floatArg)) {
-        throwTypeError(ExceptionMessages::failedToExecute("voidMethodDoubleArgFloatArg", "TestInterface", "float parameter 2 is non-finite."), info.GetIsolate());
-        return;
+    double doubleArg;
+    float floatArg;
+    {
+        v8::TryCatch block;
+        TONATIVE_VOID_INTERNAL(doubleArg, static_cast<double>(info[0]->NumberValue()));
+        if (!std::isfinite(doubleArg)) {
+            throwTypeError(ExceptionMessages::failedToExecute("voidMethodDoubleArgFloatArg", "TestInterface", "double parameter 1 is non-finite."), info.GetIsolate());
+            block.ReThrow();
+            return;
+        }
+        TONATIVE_VOID_INTERNAL(floatArg, static_cast<float>(info[1]->NumberValue()));
+        if (!std::isfinite(floatArg)) {
+            throwTypeError(ExceptionMessages::failedToExecute("voidMethodDoubleArgFloatArg", "TestInterface", "float parameter 2 is non-finite."), info.GetIsolate());
+            block.ReThrow();
+            return;
+        }
     }
     impl->voidMethodDoubleArgFloatArg(doubleArg, floatArg);
 }
 
 static void voidMethodDoubleArgFloatArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::voidMethodDoubleArgFloatArgMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
 static void voidMethodUnrestrictedDoubleArgUnrestrictedFloatArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (UNLIKELY(info.Length() < 2)) {
         throwArityTypeErrorForMethod("voidMethodUnrestrictedDoubleArgUnrestrictedFloatArg", "TestInterface", 2, info.Length(), info.GetIsolate());
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
-    TONATIVE_VOID(double, unrestrictedDoubleArg, static_cast<double>(info[0]->NumberValue()));
-    TONATIVE_VOID(float, unrestrictedFloatArg, static_cast<float>(info[1]->NumberValue()));
+    double unrestrictedDoubleArg;
+    float unrestrictedFloatArg;
+    {
+        v8::TryCatch block;
+        TONATIVE_VOID_INTERNAL(unrestrictedDoubleArg, static_cast<double>(info[0]->NumberValue()));
+        TONATIVE_VOID_INTERNAL(unrestrictedFloatArg, static_cast<float>(info[1]->NumberValue()));
+    }
     impl->voidMethodUnrestrictedDoubleArgUnrestrictedFloatArg(unrestrictedDoubleArg, unrestrictedFloatArg);
 }
 
 static void voidMethodUnrestrictedDoubleArgUnrestrictedFloatArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::voidMethodUnrestrictedDoubleArgUnrestrictedFloatArgMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
@@ skipping 37 matching lines @@
 }
 
 static void implementsComplexMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "implementsComplexMethod", "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 2)) {
         throwArityTypeError(exceptionState, 2, info.Length());
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
-    TOSTRING_VOID(V8StringResource<>, strArg, info[0]);
-    if (info.Length() > 1 && !V8TestInterfaceEmpty::hasInstance(info[1], info.GetIsolate())) {
-        exceptionState.throwTypeError("parameter 2 is not of type 'TestInterfaceEmpty'.");
-        exceptionState.throwIfNeeded();
-        return;
+    V8StringResource<> strArg;
+    TestInterfaceEmpty* testInterfaceEmptyArg;
+    {
+        v8::TryCatch block;
+        TOSTRING_VOID_INTERNAL(strArg, info[0]);
+        if (info.Length() > 1 && !V8TestInterfaceEmpty::hasInstance(info[1], info.GetIsolate())) {
+            exceptionState.throwTypeError("parameter 2 is not of type 'TestInterfaceEmpty'.");
+            exceptionState.throwIfNeeded();
+            block.ReThrow();
+            return;
+        }
+        TONATIVE_VOID_INTERNAL(testInterfaceEmptyArg, V8TestInterfaceEmpty::toNativeWithTypeCheck(info.GetIsolate(), info[1]));
     }
-    TONATIVE_VOID(TestInterfaceEmpty*, testInterfaceEmptyArg, V8TestInterfaceEmpty::toNativeWithTypeCheck(info.GetIsolate(), info[1]));
     ExecutionContext* scriptContext = currentExecutionContext(info.GetIsolate());
     RefPtr<TestInterfaceEmpty> result = impl->implementsComplexMethod(scriptContext, strArg, testInterfaceEmptyArg, exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
     v8SetReturnValue(info, result.release());
 }
 
 static void implementsComplexMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
@@ skipping 96 matching lines @@
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialVoidMethodLongArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "partialVoidMethodLongArg", "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 1)) {
         throwArityTypeError(exceptionState, 1, info.Length());
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
-    TONATIVE_VOID_EXCEPTIONSTATE(int, longArg, toInt32(info[0], exceptionState), exceptionState);
+    int longArg;
+    {
+        v8::TryCatch block;
+        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(longArg, toInt32(info[0], exceptionState), exceptionState);
+    }
     ASSERT(impl);
     TestPartialInterface::partialVoidMethodLongArg(*impl, longArg);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialVoidMethodLongArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::partialVoidMethodLongArgMethod(info);
@@ skipping 24 matching lines @@
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialVoidMethodPartialCallbackTypeArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (UNLIKELY(info.Length() < 1)) {
         throwArityTypeErrorForMethod("partialVoidMethodPartialCallbackTypeArg", "TestInterface", 1, info.Length(), info.GetIsolate());
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toNative(info.Holder());
-    TONATIVE_VOID(ScriptValue, partialCallbackTypeArg, ScriptValue(ScriptState::current(info.GetIsolate()), info[0]));
+    ScriptValue partialCallbackTypeArg;
+    {
+        v8::TryCatch block;
+        TONATIVE_VOID_INTERNAL(partialCallbackTypeArg, ScriptValue(ScriptState::current(info.GetIsolate()), info[0]));
+    }
     ASSERT(impl);
     TestPartialInterface::partialVoidMethodPartialCallbackTypeArg(*impl, partialCallbackTypeArg);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialVoidMethodPartialCallbackTypeArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::partialVoidMethodPartialCallbackTypeArgMethod(info);
@@ skipping 391 matching lines @@
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceImplementation* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore
 #endif // ENABLE(CONDITION)