Add parser header

v0/parser.h

@@ -0,0 +1,22 @@
+#ifndef PARSER_H
+#define PARSER_H
+
+#include "ast.h"
+#include "token.h"
+
+/**
+ * Parse a stream of tokens into a module.
+ * 
+ * @param ts The TokenStream to read.
+ * @returns The parsed module.
+ */
+Module* parser_parse(TokenStream* ts);
+
+/**
+ * Frees the parsed AST.
+ * 
+ * @param module The AST return by parser_parse.
+ */
+void parser_free(Module* module);
+
+#endif