keplersj · July 25, 2015 21:00 · Jul 25, 2015
diff --git a/logged.rs b/logged.rs
@@ -0,0 +1,13 @@
+#[link(name = "logger")]
+extern {
+    fn CrystalLog(text: *const u8);
+}
+
+fn log(text: &'static str) {
+    unsafe{ CrystalLog(text.as_bytes().as_ptr()) };
+}
+
+fn main() {
+    log("Hello Crystal, from Rust!");
+    log("Logging from Crystal, using Rust, totally works twice, by the way.");
+}
diff --git a/logger.cr b/logger.cr
@@ -0,0 +1,16 @@
+require "colorize"
+
+fun log = CrystalLog(text: UInt8*): Void
+  # We need to initialize the GC
+  GC.init
+
+  # We need to invoke Crystal's "main" function, the one that initializes
+  # all constants and runs the top-level code (none in this case, but without
+  # constants like STDOUT and others the last line will crash).
+  # We pass 0 and null to argc and argv.
+  LibCrystalMain.__crystal_main(0, Pointer(Pointer(UInt8)).null)
+
+  #puts "#{"Pointer Recieved:".colorize.bold} #{text}"
+  #puts "#{"Value of Pointer:".colorize.bold} #{String.new(text)}"
+  puts String.new(text)
+end
diff --git a/run.sh b/run.sh
@@ -0,0 +1,3 @@
+crystal logger.cr --link-flags "-dynamiclib" -o lib/x86_64-apple-darwin/liblogger.dylib
+rustc logged.rs
+./logged