1 files changed, 28 insertions, 0 deletions
diff --git a/myfind/ast_evaluation/expression.h b/myfind/ast_evaluation/expression.h
new file mode 100644
index 0000000..d81718d
--- /dev/null
+++ b/myfind/ast_evaluation/expression.h
@@ -0,0 +1,28 @@
+#ifndef EXPRESSION_H
+#define EXPRESSION_H
+
+enum my_expr_type
+{
+    EXPR_ADDITION = 0,
+    EXPR_SUBTRACTION,
+    EXPR_MULTIPLICATION,
+    EXPR_DIVISION,
+    EXPR_NEGATION,
+    EXPR_NUMBER
+};
+
+struct my_expr
+{
+    enum my_expr_type type;
+    union
+    {
+        struct
+        {
+            struct my_expr *left;
+            struct my_expr *right;
+        } children;
+        int value;
+    } data;
+};
+
+#endif /* ! EXPRESSION_H */