1 files changed, 45 insertions, 0 deletions
diff --git a/nerv/common.h b/nerv/common.h
index 6657dc4..413ca51 100644
--- a/nerv/common.h
+++ b/nerv/common.h
@@ -7,6 +7,50 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+enum {
+    MAT_NORMAL,
+    MAT_GENERAL_ERR,
+    MAT_INSUF_MEM,
+    MAT_INVALID_FORMAT,
+    MAT_WRITE_ERROR,
+    MAT_INVALID_COPY_INTERVAL,
+    MAT_MISMATCH_DIM,
+    MAT_WRONG_MULT_DIM,
+    MAT_ROW_VECTOR_EXP,
+    MAT_COL_VECTOR_EXP,
+    MAT_IDX_VECTOR_EXP,
+    MAT_INVALID_IDX,
+    MAT_CUDA_ERR,
+    MAT_CUBLAS_ERR
+};
+
+typedef struct Status {
+    int err_code;
+    const char *file;
+    int lineno;
+    const char *msg;
+} Status;
+
+#define NERV_SET_STATUS(status, code, m) \
+    do { \
+        (status)->err_code = code; \
+        (status)->msg = m; \
+        (status)->file = __FILE__; \
+        (status)->lineno = __LINE__; \
+    } while (0)
+
+#define NERV_EXIT_STATUS(status, code, msg) \
+    do { \
+        NERV_SET_STATUS(status, code, msg); \
+        return; \
+    } while (0)
+
+#define NERV_LUA_CHECK_STATUS(L, status) \
+    do { \
+        if (status.err_code != MAT_NORMAL) \
+            nerv_error_status(L, &status); \
+    } while (0)
+
 typedef struct HashNode {
     const char *key;
     void *val;
@@ -31,6 +75,7 @@ void hashmap_clear(HashMap *h);
 size_t bkdr_hash(const char *key);
 
 int nerv_error(lua_State *L, const char *err_mesg_fmt, ...); 
+int nerv_error_status(lua_State *L, Status *status); 
 int nerv_error_method_not_implemented(lua_State *L);
 void luaN_append_methods(lua_State *L, const luaL_Reg *mlist);
 #endif