add error system

1 files changed, 29 insertions, 0 deletions

diff --git a/include/error.h b/include/error.h
new file mode 100644
index 0000000..d8be4e5
--- /dev/null
+++ b/include/error.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <stdexcept>
+
+namespace ov4
+{
+
+enum class error_code
+{
+
+    // tokenizer
+    TOKEN_UNMATCHED_BRACKET,
+
+    // AST
+    AST_MISS_LEFT_CHILD,
+    AST_MISS_RIGHT_CHILD,
+    AST_EXIST_LEFT_CHILLD,
+    AST_EXIST_RIGHT_CHILD,
+
+};
+
+class T_error : public std::runtime_error {
+public:
+    error_code code;
+    T_error(error_code k, std::string msg)
+        : std::runtime_error(std::move(msg)), code(k) {}
+};
+    
+}