Squashed 'external/entt/entt/' content from commit fef92113

git-subtree-dir: external/entt/entt
git-subtree-split: fef921132cae7588213d0f9bcd2fb9c8ffd8b7fc

test/lib/meta_plugin/main.cpp

@@ -0,0 +1,58 @@
+#define CR_HOST
+
+#include <gtest/gtest.h>
+#include <cr.h>
+#include <entt/core/hashed_string.hpp>
+#include <entt/locator/locator.hpp>
+#include <entt/meta/factory.hpp>
+#include <entt/meta/meta.hpp>
+#include <entt/meta/resolve.hpp>
+#include "types.h"
+
+TEST(Lib, Meta) {
+    using namespace entt::literals;
+
+    ASSERT_FALSE(entt::resolve("position"_hs));
+
+    userdata ud{};
+    ud.ctx = entt::locator<entt::meta_ctx>::handle();
+
+    cr_plugin ctx;
+    ctx.userdata = &ud;
+
+    cr_plugin_load(ctx, PLUGIN);
+    cr_plugin_update(ctx);
+
+    entt::meta<double>().conv<int>();
+
+    ASSERT_TRUE(entt::resolve("position"_hs));
+    ASSERT_TRUE(entt::resolve("velocity"_hs));
+
+    auto pos = entt::resolve("position"_hs).construct(42., 3.);
+    auto vel = entt::resolve("velocity"_hs).construct();
+
+    ASSERT_TRUE(pos && vel);
+
+    ASSERT_EQ(pos.type().data("x"_hs).type(), entt::resolve<int>());
+    ASSERT_NE(pos.type().data("y"_hs).get(pos).try_cast<int>(), nullptr);
+    ASSERT_EQ(pos.type().data("x"_hs).get(pos).cast<int>(), 42);
+    ASSERT_EQ(pos.type().data("y"_hs).get(pos).cast<int>(), 3);
+
+    ASSERT_EQ(vel.type().data("dx"_hs).type(), entt::resolve<double>());
+    ASSERT_TRUE(vel.type().data("dy"_hs).get(vel).allow_cast<double>());
+    ASSERT_EQ(vel.type().data("dx"_hs).get(vel).cast<double>(), 0.);
+    ASSERT_EQ(vel.type().data("dy"_hs).get(vel).cast<double>(), 0.);
+
+    ASSERT_EQ(ud.any.type(), entt::resolve<int>());
+    ASSERT_EQ(ud.any.cast<int>(), 42);
+
+    // these objects have been initialized from a different context
+    pos.emplace<void>();
+    vel.emplace<void>();
+    ud.any.emplace<void>();
+
+    cr_plugin_close(ctx);
+
+    ASSERT_FALSE(entt::resolve("position"_hs));
+    ASSERT_FALSE(entt::resolve("velocity"_hs));
+}

test/lib/meta_plugin/plugin.cpp

@@ -0,0 +1,50 @@
+#include <cr.h>
+#include <entt/core/hashed_string.hpp>
+#include <entt/locator/locator.hpp>
+#include <entt/meta/context.hpp>
+#include <entt/meta/factory.hpp>
+#include <entt/meta/meta.hpp>
+#include "types.h"
+
+position create_position(int x, int y) {
+    return position{x, y};
+}
+
+void set_up() {
+    using namespace entt::literals;
+
+    entt::meta<position>()
+        .type("position"_hs)
+        .ctor<&create_position>()
+        .data<&position::x>("x"_hs)
+        .data<&position::y>("y"_hs);
+
+    entt::meta<velocity>()
+        .type("velocity"_hs)
+        .ctor<>()
+        .data<&velocity::dx>("dx"_hs)
+        .data<&velocity::dy>("dy"_hs);
+}
+
+void tear_down() {
+    entt::meta_reset<position>();
+    entt::meta_reset<velocity>();
+}
+
+CR_EXPORT int cr_main(cr_plugin *ctx, cr_op operation) {
+    switch(operation) {
+    case CR_LOAD:
+        entt::locator<entt::meta_ctx>::reset(static_cast<userdata *>(ctx->userdata)->ctx);
+        set_up();
+        break;
+    case CR_STEP:
+        static_cast<userdata *>(ctx->userdata)->any = 42;
+        break;
+    case CR_UNLOAD:
+    case CR_CLOSE:
+        tear_down();
+        break;
+    }
+
+    return 0;
+}

test/lib/meta_plugin/types.h

@@ -0,0 +1,22 @@
+#ifndef ENTT_LIB_META_PLUGIN_TYPES_H
+#define ENTT_LIB_META_PLUGIN_TYPES_H
+
+#include <entt/locator/locator.hpp>
+#include <entt/meta/meta.hpp>
+
+struct position {
+    int x;
+    int y;
+};
+
+struct velocity {
+    double dx;
+    double dy;
+};
+
+struct userdata {
+    entt::locator<entt::meta_ctx>::node_type ctx;
+    entt::meta_any any;
+};
+
+#endif