rename rust.cc -> runtime.cc

src/runtime.cc

@@ -0,0 +1,27 @@
+//! The RustPP runtime
+
+#include "panic.hh"
+#define I_AM_RUSTPP_RUNTIME
+#include <print>
+
+#include "rust.hh"
+
+namespace {
+    slice::Slice<Cstr> program_args = {};
+}
+
+fn main (int argc, char **argv) -> int {
+    program_args = { (Cstr *) argv, (usize) argc };
+    try {
+        return rustpp__main ();
+    } catch (panic::Panic p) {
+        std::println ("Thread exited with explicit panic: {}", p.what ());
+    }
+}
+
+// Environment
+namespace env {
+    fn args () -> slice::Slice<Cstr> {
+        return program_args;
+    }
+} // namespace env