V8FunctionCall.cpp

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#include "platform/v8_inspector/V8FunctionCall.h"

#include "platform/v8_inspector/StringUtil.h"
#include "platform/v8_inspector/V8Compat.h"
#include "platform/v8_inspector/V8Debugger.h"
#include "platform/v8_inspector/V8InspectorImpl.h"
#include "platform/v8_inspector/public/V8InspectorClient.h"

#include <v8.h>

namespace v8_inspector {

V8FunctionCall::V8FunctionCall(V8InspectorImpl* inspector, v8::Local<v8::Context> context, v8::Local<v8::Value> value, const String16& name)
    : m_inspector(inspector)
    , m_context(context)
    , m_name(toV8String(context->GetIsolate(), name))
    , m_value(value)
{
}

void V8FunctionCall::appendArgument(v8::Local<v8::Value> value)
{
    m_arguments.push_back(value);
}

void V8FunctionCall::appendArgument(const String16& argument)
{
    m_arguments.push_back(toV8String(m_context->GetIsolate(), argument));
}

void V8FunctionCall::appendArgument(int argument)
{
    m_arguments.push_back(v8::Number::New(m_context->GetIsolate(), argument));
}

void V8FunctionCall::appendArgument(bool argument)
{
    m_arguments.push_back(argument ? v8::True(m_context->GetIsolate()) : v8::False(m_context->GetIsolate()));
}

v8::Local<v8::Value> V8FunctionCall::call(bool& hadException, bool reportExceptions)
{
    v8::TryCatch tryCatch(m_context->GetIsolate());
    tryCatch.SetVerbose(reportExceptions);

    v8::Local<v8::Value> result = callWithoutExceptionHandling();
    hadException = tryCatch.HasCaught();
    return result;
}

v8::Local<v8::Value> V8FunctionCall::callWithoutExceptionHandling()
{
    v8::Local<v8::Object> thisObject = v8::Local<v8::Object>::Cast(m_value);
    v8::Local<v8::Value> value;
    if (!thisObject->Get(m_context, m_name).ToLocal(&value))
        return v8::Local<v8::Value>();

    DCHECK(value->IsFunction());

    v8::Local<v8::Function> function = v8::Local<v8::Function>::Cast(value);
    std::unique_ptr<v8::Local<v8::Value>[]> info(new v8::Local<v8::Value>[m_arguments.size()]);
    for (size_t i = 0; i < m_arguments.size(); ++i) {
        info[i] = m_arguments[i];
        DCHECK(!info[i].IsEmpty());
    }

    int contextGroupId = V8Debugger::getGroupId(m_context);
    if (contextGroupId) {
        m_inspector->client()->muteMetrics(contextGroupId);
        m_inspector->muteExceptions(contextGroupId);
    }
    v8::MicrotasksScope microtasksScope(m_context->GetIsolate(), v8::MicrotasksScope::kDoNotRunMicrotasks);
    v8::MaybeLocal<v8::Value> maybeResult = function->Call(m_context, thisObject, m_arguments.size(), info.get());
    if (contextGroupId) {
        m_inspector->client()->unmuteMetrics(contextGroupId);
        m_inspector->unmuteExceptions(contextGroupId);
    }

    v8::Local<v8::Value> result;
    if (!maybeResult.ToLocal(&result))
        return v8::Local<v8::Value>();
    return result;
}

} // namespace v8_inspector