parser: Work on parsing function declarations

Signed-off-by: Quinn Stephens <quinn@osmora.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/parser/ast.h b/include/parser/ast.h
new file mode 100644
index 0000000..3449764
--- /dev/null
+++ b/include/parser/ast.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2025 Quinn Stephens and the OSMORA team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _PARSER_AST_H
+#define _PARSER_AST_H
+
+#include <stddef.h>
+#include "hashmap.h"
+#include "parser/types.h"
+
+enum ast_node_kind {
+    NOK_UNKNOWN,
+
+    NOK_FUNCTION
+};
+
+struct ast_node {
+    struct hashmap_entry hashmap_entry;
+
+    enum ast_node_kind kind;
+
+    const char *name;
+    size_t name_len;
+
+    struct type *type;
+    int ptr_levels;
+};
+
+#endif /* !_PARSER_AST_H */