Initial wasm simulator checkpoint

core/src/gcode_backend.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "canon_event_sink.h"
+
+#include <cstddef>
+#include <string>
+
+enum class GcodeBackendKind {
+    Smoke,
+    LinuxCncRs274,
+};
+
+const char *gcode_backend_name(GcodeBackendKind backend);
+
+int parse_gcode_with_backend(GcodeBackendKind backend,
+                             CanonEventSink &sink,
+                             const char *program,
+                             size_t program_len,
+                             std::string *error);
+