Method bindFunc

src/function/struct/struct_extract_function.cpp:14–32

namespace function {

std::unique_ptr<FunctionBindData> StructExtractFunctions::bindFunc(
    const ScalarBindFuncInput& input) {
    const auto& structType = input.arguments[0]->getDataType();
    if (input.arguments[1]->expressionType != ExpressionType::LITERAL) {
        throw BinderException("Key name for struct/union extract must be STRING literal.");
    }
    auto key =
        input.arguments[1]->constPtrCast<LiteralExpression>()->getValue().getValue<std::string>();
    auto fieldIdx = StructType::getFieldIdx(structType, key);
    if (fieldIdx == INVALID_STRUCT_FIELD_IDX) {
        throw BinderException(std::format("Invalid struct field name: {}.", key));
    }
    auto paramTypes = ExpressionUtil::getDataTypes(input.arguments);
    auto resultType = StructType::getField(structType, fieldIdx).getType().copy();
    auto bindData = std::make_unique<StructExtractBindData>(std::move(resultType), fieldIdx);
    bindData->paramTypes.push_back(input.arguments[0]->getDataType().copy());
    bindData->paramTypes.push_back(LogicalType(input.definition->parameterTypeIDs[1]));
    return bindData;
}

void StructExtractFunctions::compileFunc(FunctionBindData* bindData,
    const std::vector<std::shared_ptr<ValueVector>>& parameters,