1 files changed, 22 insertions, 0 deletions

diff --git a/src/treewalk/parser.h b/src/treewalk/parser.h
new file mode 100644
index 0000000..3834c75
--- /dev/null
+++ b/src/treewalk/parser.h
@@ -0,0 +1,22 @@
+#ifndef BDL_PARSER_H
+#define BDL_PARSER_H
+
+typedef struct Visitor {
+    Token *tokens;
+    size_t current;
+} Visitor;
+
+// Mimics the functionality in the Scanner functions, but for entire tokens.
+Token next_token(Visitor *visitor);
+Token peek_token(const Visitor *visitor);
+bool has_next_token(const Visitor *visitor);
+
+// Parse a token into a fixnum object.
+Object * parse_fixnum(Token tok);
+
+// Recursive descent parser. If an object is not a list the parsing is handled
+// by the parse_tree function.
+Object * parse_list(Visitor *vs);
+Object * parse_tree(Visitor *vs);
+
+#endif // BDL_PARSER_H