Initial upload

ast.h

@@ -0,0 +1,24 @@
+/* vim: set filetype=c: */
+
+#ifndef _AST_H_
+#define _AST_H_
+
+#include "token.h"
+#include "token_list.h"
+#include "error.h"
+
+typedef struct AST AST;
+struct AST {
+    Token* root;
+};
+
+extern void AST_init(AST* obj);
+
+/* Can be called exactly once after AST_init */
+extern Result AST_parse_from_TokenList(AST* obj, const TokenList* tokens);
+
+extern long double AST_evaluate(AST* obj);
+
+extern void AST_uninit(AST* obj);
+
+#endif /* _AST_H_ */