Source/JavaScriptCore/interpreter/CachedCallInlines.h

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#pragma once

#include <JavaScriptCore/CachedCall.h>

#if ASSERT_ENABLED
#include <JavaScriptCore/IntegrityInlines.h>
#endif

namespace JSC {

template<typename... Args> requires (std::is_convertible_v<Args, JSValue> && ...)
ALWAYS_INLINE JSValue CachedCall::callWithArguments(JSGlobalObject* globalObject, JSValue thisValue, Args... args)
{
    VM& vm = m_vm;
    auto scope = DECLARE_THROW_SCOPE(vm);

    ASSERT_WITH_MESSAGE(!thisValue.isEmpty(), "Expected thisValue to be non-empty. Use jsUndefined() if you meant to use undefined.");
#if ASSERT_ENABLED
    if constexpr (sizeof...(args) > 0) {
        size_t argIndex = 0;
        auto checkArg = [&argIndex, &vm](JSValue arg) {
            ASSERT_WITH_MESSAGE(!arg.isEmpty(), "arguments[%zu] is JSValue(). Use jsUndefined() if you meant to make it undefined.", argIndex);
            if (arg.isCell())
                Integrity::auditCell(vm, arg.asCell());
            ++argIndex;
        };
        (checkArg(args), ...);
    }
#endif

#if CPU(ARM64) && CPU(ADDRESS64) && !ENABLE(C_LOOP)
    ASSERT(sizeof...(args) == static_cast<size_t>(m_protoCallFrame.argumentCount()));
    constexpr unsigned argumentCountIncludingThis = 1 + sizeof...(args);
    if constexpr (argumentCountIncludingThis <= 4) {
        if (m_numParameters <= argumentCountIncludingThis) [[likely]] {
            JSValue result = m_vm.interpreter.tryCallWithArguments(*this, thisValue, args...);
            RETURN_IF_EXCEPTION(scope, { });
            if (result)
                return result;
        }
    }
#endif

    clearArguments();
    setThis(thisValue);
    (appendArgument(args), ...);

    if (hasOverflowedArguments()) [[unlikely]] {
        throwOutOfMemoryError(globalObject, scope);
        return { };
    }

    RELEASE_AND_RETURN(scope, call());
}

}