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Allow querying the number of routes in URITemplateRouter (#2339)
Signed-off-by: Juan Cruz Viotti <[email protected]>
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‎src/core/uritemplate/include/sourcemeta/core/uritemplate_router.h‎

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Original file line numberDiff line numberDiff line change
@@ -106,10 +106,14 @@ class SOURCEMETA_CORE_URITEMPLATE_EXPORT URITemplateRouter {
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/// Access the base path prefix
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[[nodiscard]] auto base_path() const noexcept -> std::string_view;
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/// Get the number of registered routes
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[[nodiscard]] auto size() const noexcept -> std::size_t;
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private:
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Node root_;
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std::string base_path_;
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std::vector<std::pair<Identifier, std::vector<Argument>>> arguments_;
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std::size_t size_{0};
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};
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/// @ingroup uritemplate
@@ -145,6 +149,9 @@ class SOURCEMETA_CORE_URITEMPLATE_EXPORT URITemplateRouterView {
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/// Access the base path prefix
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[[nodiscard]] auto base_path() const noexcept -> std::string_view;
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/// Get the number of registered routes
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[[nodiscard]] auto size() const noexcept -> std::size_t;
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private:
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std::vector<std::uint8_t> data_;
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};

‎src/core/uritemplate/uritemplate_router.cc‎

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Original file line numberDiff line numberDiff line change
@@ -109,6 +109,10 @@ auto URITemplateRouter::base_path() const noexcept -> std::string_view {
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return this->base_path_;
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}
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auto URITemplateRouter::size() const noexcept -> std::size_t {
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return this->size_;
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}
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auto URITemplateRouter::add(const std::string_view uri_template,
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const Identifier identifier,
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const Identifier context,
@@ -141,6 +145,9 @@ auto URITemplateRouter::add(const std::string_view uri_template,
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if (uri_template.empty()) {
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auto &target = current ? *current : this->root_;
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if (target.identifier == 0) {
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this->size_ += 1;
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}
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target.identifier = identifier;
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target.context = context;
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if (!arguments.empty()) {
@@ -310,6 +317,9 @@ auto URITemplateRouter::add(const std::string_view uri_template,
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}
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if (!absorbed && current != nullptr) {
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if (current->identifier == 0) {
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this->size_ += 1;
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}
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current->identifier = identifier;
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current->context = context;
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if (!arguments.empty()) {

‎src/core/uritemplate/uritemplate_router_view.cc‎

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Original file line numberDiff line numberDiff line change
@@ -663,4 +663,34 @@ auto URITemplateRouterView::base_path() const noexcept -> std::string_view {
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return {string_table + header->base_path_offset, header->base_path_length};
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}
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auto URITemplateRouterView::size() const noexcept -> std::size_t {
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if (this->data_.size() < sizeof(RouterHeader)) {
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return 0;
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}
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const auto *header =
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reinterpret_cast<const RouterHeader *>(this->data_.data());
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if (header->magic != ROUTER_MAGIC || header->version != ROUTER_VERSION) {
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return 0;
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}
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if (header->node_count == 0 ||
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header->node_count > (this->data_.size() - sizeof(RouterHeader)) /
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sizeof(SerializedNode)) {
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return 0;
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}
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const auto *nodes = reinterpret_cast<const SerializedNode *>(
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this->data_.data() + sizeof(RouterHeader));
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std::size_t count = 0;
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for (std::uint32_t index = 0; index < header->node_count; ++index) {
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if (nodes[index].identifier != 0) {
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count += 1;
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}
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}
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return count;
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}
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} // namespace sourcemeta::core

‎test/uritemplate/uritemplate_router_test.cc‎

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Original file line numberDiff line numberDiff line change
@@ -1292,3 +1292,50 @@ TEST(URITemplateRouter, add_with_context_overwrites_previous_context) {
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EXPECT_ROUTER_MATCH(router, "/users", 1, 20, captures);
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EXPECT_EQ(captures.size(), 0);
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}
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TEST(URITemplateRouter, size_empty_router) {
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const sourcemeta::core::URITemplateRouter router;
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EXPECT_EQ(router.size(), 0);
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}
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TEST(URITemplateRouter, size_single_route) {
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sourcemeta::core::URITemplateRouter router;
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router.add("/users", 1);
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EXPECT_EQ(router.size(), 1);
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}
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TEST(URITemplateRouter, size_multiple_routes) {
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sourcemeta::core::URITemplateRouter router;
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router.add("/users", 1);
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router.add("/users/{id}", 2);
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router.add("/posts", 3);
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router.add("/posts/{id}", 4);
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EXPECT_EQ(router.size(), 4);
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}
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TEST(URITemplateRouter, size_duplicate_route_does_not_increase) {
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sourcemeta::core::URITemplateRouter router;
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router.add("/users", 1);
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router.add("/users", 2);
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EXPECT_EQ(router.size(), 1);
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}
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TEST(URITemplateRouter, size_with_context_overwrite_does_not_increase) {
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sourcemeta::core::URITemplateRouter router;
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router.add("/users", 1, 10);
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router.add("/users", 1, 20);
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EXPECT_EQ(router.size(), 1);
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}
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1330+
TEST(URITemplateRouter, size_root_template) {
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sourcemeta::core::URITemplateRouter router;
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router.add("", 1);
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EXPECT_EQ(router.size(), 1);
1334+
}
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1336+
TEST(URITemplateRouter, size_with_base_path) {
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sourcemeta::core::URITemplateRouter router{"/v1"};
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router.add("/users", 1);
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router.add("/posts", 2);
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EXPECT_EQ(router.size(), 2);
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}

‎test/uritemplate/uritemplate_router_view_test.cc‎

Lines changed: 59 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2318,3 +2318,62 @@ TEST_F(URITemplateRouterViewTest,
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EXPECT_ROUTER_MATCH(restored, "/users", 1, 20, captures);
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EXPECT_EQ(captures.size(), 0);
23202320
}
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TEST_F(URITemplateRouterViewTest, size_empty_router) {
2323+
{
2324+
const sourcemeta::core::URITemplateRouter router;
2325+
sourcemeta::core::URITemplateRouterView::save(router, this->path);
2326+
}
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const sourcemeta::core::URITemplateRouterView restored{this->path};
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EXPECT_EQ(restored.size(), 0);
2330+
}
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2332+
TEST_F(URITemplateRouterViewTest, size_single_route) {
2333+
{
2334+
sourcemeta::core::URITemplateRouter router;
2335+
router.add("/users", 1);
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sourcemeta::core::URITemplateRouterView::save(router, this->path);
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}
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2339+
const sourcemeta::core::URITemplateRouterView restored{this->path};
2340+
EXPECT_EQ(restored.size(), 1);
2341+
}
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2343+
TEST_F(URITemplateRouterViewTest, size_multiple_routes) {
2344+
{
2345+
sourcemeta::core::URITemplateRouter router;
2346+
router.add("/users", 1);
2347+
router.add("/users/{id}", 2);
2348+
router.add("/posts", 3);
2349+
router.add("/posts/{id}", 4);
2350+
sourcemeta::core::URITemplateRouterView::save(router, this->path);
2351+
}
2352+
2353+
const sourcemeta::core::URITemplateRouterView restored{this->path};
2354+
EXPECT_EQ(restored.size(), 4);
2355+
}
2356+
2357+
TEST_F(URITemplateRouterViewTest, size_duplicate_route_does_not_increase) {
2358+
{
2359+
sourcemeta::core::URITemplateRouter router;
2360+
router.add("/users", 1);
2361+
router.add("/users", 2);
2362+
sourcemeta::core::URITemplateRouterView::save(router, this->path);
2363+
}
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const sourcemeta::core::URITemplateRouterView restored{this->path};
2366+
EXPECT_EQ(restored.size(), 1);
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}
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TEST_F(URITemplateRouterViewTest, size_with_base_path) {
2370+
{
2371+
sourcemeta::core::URITemplateRouter router{"/v1"};
2372+
router.add("/users", 1);
2373+
router.add("/posts", 2);
2374+
sourcemeta::core::URITemplateRouterView::save(router, this->path);
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}
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const sourcemeta::core::URITemplateRouterView restored{this->path};
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EXPECT_EQ(restored.size(), 2);
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}

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