harness: Perform several improvements

This commit performs several improvements to the OpenDC harness and modules utilizing the harness.

1 files changed, 34 insertions, 0 deletions

diff --git a/simulator/buildSrc/src/main/kotlin/ProjectExtensions.kt b/simulator/buildSrc/src/main/kotlin/ProjectExtensions.kt
new file mode 100644
index 00000000..ddf643f6
--- /dev/null
+++ b/simulator/buildSrc/src/main/kotlin/ProjectExtensions.kt
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2021 AtLarge Research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.extra
+import org.gradle.kotlin.dsl.provideDelegate
+
+/**
+ * Obtain the [Versions] object for the specified [Project] instance.
+ */
+val Project.versions: Versions
+    get() {
+        var versions: Versions? by rootProject.extra
+        return versions ?: Versions(rootProject).also { versions = it }
+    }