1 files changed, 57 insertions, 0 deletions
diff --git a/src/ast.h b/src/ast.h
new file mode 100644
index 0000000..7f5a198
--- /dev/null
+++ b/src/ast.h
@@ -0,0 +1,57 @@
+/*
+* Copyright (C) 2023 Johnny Richard
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+#ifndef AST_H
+#define AST_H
+#include <stdint.h>
+#include "string_view.h"
+
+#define ast_visitor_visit(visitor, node) ast_node_accept_visitor((ast_node_t *) node, (ast_visitor_t *) visitor);
+
+typedef enum {
+  TYPE_I32
+} type_t;
+
+typedef struct ast_visitor_t ast_visitor_t;
+
+typedef struct ast_node_t {
+  void (*accept_visitor)(struct ast_node_t *, ast_visitor_t *);
+} ast_node_t;
+
+typedef struct ast_return_stmt_t {
+  struct ast_node_t super;
+  uint32_t number;
+} ast_return_stmt_t;
+
+typedef struct ast_function_t {
+  struct ast_node_t super;
+  string_view_t name;
+  type_t  return_type;
+  ast_return_stmt_t body;
+} ast_function_t;
+
+typedef struct ast_visitor_t {
+  void (*visit_function)(struct ast_visitor_t *, ast_function_t *);
+  void (*visit_return_stmt)(struct ast_visitor_t *, ast_return_stmt_t *);
+} ast_visitor_t;
+
+void ast_node_accept_visitor(ast_node_t *node, ast_visitor_t *visitor);
+
+ast_function_t ast_function_create(string_view_t name, type_t return_type, ast_return_stmt_t body);
+ast_return_stmt_t ast_return_stmt_create(uint32_t number);
+
+#endif /* AST_H */
+