Use anonymous namespace for internal linkage

test/t/complex/reader_test_cases.cpp

@@ -616,7 +616,9 @@ TEST_CASE("write complex data using pbf_builder: all") {
     REQUIRE(number_of_u == 5);
 }
 
-static void check_message(const std::string& buffer) {
+namespace {
+
+void check_message(const std::string& buffer) {
     protozero::pbf_reader item{buffer};
 
     while (item.next()) {
@@ -640,6 +642,8 @@ static void check_message(const std::string& buffer) {
     }
 }
 
+} // anonymous namespace
+
 TEST_CASE("write complex with subwriter using pbf_writer") {
     std::string buffer_test;
     protozero::pbf_writer pbf_test{buffer_test};

test/t/nested/reader_test_cases.cpp

@@ -1,7 +1,9 @@
 
 #include <test.hpp>
 
-inline void check_subsub(protozero::pbf_reader message) {
+namespace {
+
+void check_subsub(protozero::pbf_reader message) {
     while (message.next()) {
         switch (message.tag()) {
             case 1: {
@@ -20,7 +22,7 @@ inline void check_subsub(protozero::pbf_reader message) {
     }
 }
 
-inline void check_sub(protozero::pbf_reader message) {
+void check_sub(protozero::pbf_reader message) {
     while (message.next()) {
         switch (message.tag()) {
             case 1: {
@@ -39,7 +41,7 @@ inline void check_sub(protozero::pbf_reader message) {
     }
 }
 
-inline void check(protozero::pbf_reader message) {
+void check(protozero::pbf_reader message) {
     while (message.next()) {
         switch (message.tag()) {
             case 1: {
@@ -58,7 +60,7 @@ inline void check(protozero::pbf_reader message) {
     }
 }
 
-inline void check_empty(protozero::pbf_reader message) {
+void check_empty(protozero::pbf_reader message) {
     while (message.next()) {
         switch (message.tag()) {
             case 1: {
@@ -77,6 +79,8 @@ inline void check_empty(protozero::pbf_reader message) {
     }
 }
 
+} // anonymous namespace
+
 TEST_CASE("read nested message fields: string") {
     const std::string buffer = load_data("nested/data-message");
 

test/t/tag_and_type/reader_test_cases.cpp

@@ -7,11 +7,13 @@
 
 #include <test.hpp>
 
+namespace {
+
 enum class ExampleMsg : protozero::pbf_tag_type {
     repeated_uint32_x = 1
 };
 
-inline std::vector<uint32_t> read_data(const std::string& data) {
+std::vector<uint32_t> read_data(const std::string& data) {
     std::vector<uint32_t> values;
 
     protozero::pbf_message<ExampleMsg> message{data};
@@ -35,7 +37,7 @@ inline std::vector<uint32_t> read_data(const std::string& data) {
     return values;
 }
 
-inline std::vector<uint32_t> read_data_packed(const std::string& data) {
+std::vector<uint32_t> read_data_packed(const std::string& data) {
     std::vector<uint32_t> values;
 
     protozero::pbf_message<ExampleMsg> message{data};
@@ -47,6 +49,8 @@ inline std::vector<uint32_t> read_data_packed(const std::string& data) {
     return values;
 }
 
+} // anonymous namespace
+
 TEST_CASE("read not packed repeated field with tag_and_type") {
     const auto values = read_data(load_data("tag_and_type/data-not-packed"));
 

test/t/tags/reader_test_cases.cpp

@@ -1,7 +1,9 @@
 
 #include <test.hpp>
 
-inline void check_tag(const std::string& buffer, protozero::pbf_tag_type tag) {
+namespace {
+
+void check_tag(const std::string& buffer, protozero::pbf_tag_type tag) {
     protozero::pbf_reader item{buffer};
 
     REQUIRE(item.next());
@@ -10,6 +12,8 @@ inline void check_tag(const std::string& buffer, protozero::pbf_tag_type tag) {
     REQUIRE_FALSE(item.next());
 }
 
+} // anonymous namespace
+
 TEST_CASE("read tag: 1") {
     check_tag(load_data("tags/data-tag-1"), 1UL);
 }

test/t/vector_tile/reader_test_cases.cpp

@@ -4,17 +4,21 @@
 #include <string>
 #include <vector>
 
+namespace {
+
 // Input data.vector is encoded according to
 // https://github.com/mapbox/mapnik-vector-tile/blob/master/proto/vector_tile.proto
 
-static std::string get_name(protozero::pbf_reader layer) { // copy!
+std::string get_name(protozero::pbf_reader layer) { // copy!
     while (layer.next(1)) { // required string name
         return layer.get_string();
     }
     REQUIRE(false); // should never be here
     return "";
 }
 
+} // anonymous namespace
+
 TEST_CASE("reading vector tiles") {
     static const std::vector<std::string> expected_layer_names = {
         "landuse", "waterway", "water", "aeroway", "barrier_line", "building",

test/unit/test_endian.cpp

@@ -6,18 +6,22 @@
 
 #include <protozero/byteswap.hpp>
 
-static int32_t check_swap_4(int32_t data) noexcept {
+namespace {
+
+int32_t check_swap_4(int32_t data) noexcept {
     protozero::byteswap_inplace(&data);
     protozero::byteswap_inplace(&data);
     return data;
 }
 
-static int64_t check_swap_8(int64_t data) noexcept {
+int64_t check_swap_8(int64_t data) noexcept {
     protozero::byteswap_inplace(&data);
     protozero::byteswap_inplace(&data);
     return data;
 }
 
+} // anonymous namespace
+
 TEST_CASE("byte swapping") {
     REQUIRE(0 == check_swap_4(0));
     REQUIRE(1 == check_swap_4(1));

test/unit/test_zigzag.cpp

@@ -39,14 +39,18 @@ static_assert(protozero::decode_zigzag64(0xfffffffffffffffdULL) == -0x7fffffffff
 static_assert(protozero::decode_zigzag64(2 * static_cast<uint64_t>(std::numeric_limits<int64_t>::max())    ) ==  std::numeric_limits<int64_t>::max(), "test constexpr zigzag functions");
 static_assert(protozero::decode_zigzag64(2 * static_cast<uint64_t>(std::numeric_limits<int64_t>::max()) - 1) == -std::numeric_limits<int64_t>::max(), "test constexpr zigzag functions");
 
-inline constexpr int32_t zz32(int32_t val) noexcept {
+namespace {
+
+constexpr int32_t zz32(int32_t val) noexcept {
     return protozero::decode_zigzag32(protozero::encode_zigzag32(val));
 }
 
-inline constexpr int64_t zz64(int64_t val) noexcept {
+constexpr int64_t zz64(int64_t val) noexcept {
     return protozero::decode_zigzag64(protozero::encode_zigzag64(val));
 }
 
+} // anonymous namespace
+
 TEST_CASE("zigzag encode some 32 bit values") {
     REQUIRE(protozero::encode_zigzag32( 0L) == 0UL);
     REQUIRE(protozero::encode_zigzag32(-1L) == 1UL);

tools/pbf-decoder.cpp

@@ -33,6 +33,8 @@ Call with --help/-h to see more options.
 #include <stdexcept>
 #include <string>
 
+namespace {
+
 std::string decode(const char* data, std::size_t len, const std::string& indent);
 
 // Try decoding as a nested message
@@ -203,6 +205,8 @@ std::string read_from_stdin() {
                        std::istreambuf_iterator<char>()};
 }
 
+} // anonymous namespace
+
 int main(int argc, char* argv[]) {
     static struct option long_options[] = {
         {"help",         no_argument, nullptr, 'h'},