Initial wasm simulator checkpoint

core/src/gcode_backend.cpp

@@ -0,0 +1,44 @@
+#include "gcode_backend.h"
+
+#ifdef CNC_SIM_ENABLE_LINUXCNC_RS274_BACKEND
+#include "linuxcnc_rs274_backend.h"
+#endif
+#include "smoke_gcode_parser.h"
+
+const char *gcode_backend_name(GcodeBackendKind backend) {
+    switch (backend) {
+    case GcodeBackendKind::Smoke:
+        return "smoke";
+    case GcodeBackendKind::LinuxCncRs274:
+        return "linuxcnc-rs274";
+    default:
+        return "unknown";
+    }
+}
+
+int parse_gcode_with_backend(GcodeBackendKind backend,
+                             CanonEventSink &sink,
+                             const char *program,
+                             size_t program_len,
+                             std::string *error) {
+    switch (backend) {
+    case GcodeBackendKind::Smoke: {
+        SmokeGcodeParser parser(sink);
+        return parser.parse(program, program_len, error);
+    }
+    case GcodeBackendKind::LinuxCncRs274:
+#ifdef CNC_SIM_ENABLE_LINUXCNC_RS274_BACKEND
+        return parse_linuxcnc_rs274_backend(sink, program, program_len, error);
+#else
+        if (error) {
+            *error = "linuxcnc-rs274 backend is not compiled into this build";
+        }
+        return -1;
+#endif
+    default:
+        if (error) {
+            *error = "unknown G-code backend";
+        }
+        return -1;
+    }
+}