should be it

external/duckdb/test/helpers/capi_tester.cpp

@@ -0,0 +1,165 @@
+#include "capi_tester.hpp"
+
+bool NO_FAIL(duckdb::CAPIResult &result) {
+	if (result.HasError()) {
+		fprintf(stderr, "Query failed with message: %s\n", result.ErrorMessage());
+	}
+	return result.success;
+}
+
+bool NO_FAIL(duckdb::unique_ptr<duckdb::CAPIResult> result) {
+	return NO_FAIL(*result);
+}
+
+namespace duckdb {
+
+template <>
+bool CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_boolean(&result, col, row);
+}
+
+template <>
+int8_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_int8(&result, col, row);
+}
+
+template <>
+int16_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_int16(&result, col, row);
+}
+
+template <>
+int32_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_int32(&result, col, row);
+}
+
+template <>
+int64_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_int64(&result, col, row);
+}
+
+template <>
+uint8_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_uint8(&result, col, row);
+}
+
+template <>
+uint16_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_uint16(&result, col, row);
+}
+
+template <>
+uint32_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_uint32(&result, col, row);
+}
+
+template <>
+uint64_t CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_uint64(&result, col, row);
+}
+
+template <>
+float CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_float(&result, col, row);
+}
+
+template <>
+double CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_double(&result, col, row);
+}
+
+template <>
+duckdb_decimal CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_decimal(&result, col, row);
+}
+
+template <>
+duckdb_date CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_date *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+duckdb_time CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_time *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+duckdb_time_ns CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_time_ns *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+duckdb_timestamp CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_timestamp *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+duckdb_timestamp_s CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_timestamp_s *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+duckdb_timestamp_ms CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_timestamp_ms *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+duckdb_timestamp_ns CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_timestamp_ns *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+duckdb_interval CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_interval(&result, col, row);
+}
+
+template <>
+duckdb_blob CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto data = (duckdb_blob *)duckdb_column_data(&result, col);
+	return data[row];
+}
+
+template <>
+string CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto value = duckdb_value_varchar(&result, col, row);
+	string strval = value ? string(value) : string();
+	free((void *)value);
+	return strval;
+}
+
+template <>
+duckdb_date_struct CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto value = duckdb_value_date(&result, col, row);
+	return duckdb_from_date(value);
+}
+
+template <>
+duckdb_time_struct CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto value = duckdb_value_time(&result, col, row);
+	return duckdb_from_time(value);
+}
+
+template <>
+duckdb_timestamp_struct CAPIResult::Fetch(idx_t col, idx_t row) {
+	auto value = duckdb_value_timestamp(&result, col, row);
+	return duckdb_from_timestamp(value);
+}
+
+template <>
+duckdb_hugeint CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_hugeint(&result, col, row);
+}
+
+template <>
+duckdb_uhugeint CAPIResult::Fetch(idx_t col, idx_t row) {
+	return duckdb_value_uhugeint(&result, col, row);
+}
+
+} // namespace duckdb