.

lib/tyche.h

@@ -6,6 +6,7 @@
 
 typedef enum {
     TT_NIL, TT_INTEGER, TT_REAL, TT_STRING, TT_STRING_CONST, TT_ARRAY, TT_TABLE, TT_FUNCTION, TT_NATIVE_PTR,
+    TT_COUNT__
 } TYC_TYPE;
 
 typedef enum {
@@ -15,11 +16,12 @@ typedef enum {
     T_ERR_TABLE_KEY_NOT_FOUND = -20,
     T_ERR_ASSEMBLER_SYNTAX_ERROR = -30,
     T_ERR_BYTECODE_TOO_SMALL = -40, T_ERR_BYTECODE_INVALID_MAGIC = -41,
-    T_ERR_TYPE_UNEXPECTED = -50, T_ERR_INVALID_OPCODE = -51,
+    T_ERR_TYPE_UNEXPECTED = -50, T_ERR_INVALID_OPCODE = -51, T_ERR_EXPR_INCORRECT_TYPES = -52,
 } TYC_RESULT;
 
 typedef enum {
-    TX_SUM,
+    TX_SUM, TX_SUBTRACT,
+    TX_COUNT__
 } TYC_EXPR;
 
 #define T_REAL float