Method eval

source/ast/builtins/ArrayMethods.cpp:64–110

    }

    ConstantValue eval(EvalContext& context, const Args& args, SourceRange,
                       const CallExpression::SystemCallInfo& callInfo) const final {
        ConstantValue arr = args[0]->eval(context);
        if (!arr)
            return nullptr;

        auto [iterExpr, iterVar] = callInfo.getIteratorInfo();
        if (iterExpr) {
            SLANG_ASSERT(iterVar);
            if (arr.empty()) {
                auto elemType = iterExpr->type;
                return SVInt(elemType->getBitWidth(), 0, elemType->isSigned());
            }

            auto it = begin(arr);
            auto guard = context.disableCaching();
            auto iterVal = context.createLocal(iterVar, *it);
            ConstantValue cv = iterExpr->eval(context);
            if (!cv)
                return nullptr;

            SVInt result = cv.integer();
            for (++it; it != end(arr); ++it) {
                *iterVal = *it;
                cv = iterExpr->eval(context);
                if (!cv)
                    return nullptr;

                op(result, cv.integer());
            }

            return result;
        }
        else {
            if (arr.empty()) {
                auto elemType = args[0]->type->getArrayElementType();
                return SVInt(elemType->getBitWidth(), 0, elemType->isSigned());
            }

            auto it = begin(arr);
            SVInt result = it->integer();
            for (++it; it != end(arr); ++it)
                op(result, it->integer());

            return result;
        }
    }

private:
    Operator op;