feat: add construct and group parser

include/compiler/treeifier/ast.hh

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <string>
+#include <list>
+#include <unordered_map>
+#include <memory>
+#include "compiler/treeifier/tokenizer.hh"
+#include "utils/data.hh"
+#include "utils/slice.hh"
+#include "lang/common.hh"
+
+using namespace std::string_literals;
+using namespace ppc;
+
+namespace ppc::comp::tree::ast {
+    class constr_parser_t {
+    private:
+        std::string name;
+    public:
+        const std::string &name() { return name; }
+        virtual bool parse(messages::msg_stack_t &messages, vec_slice_t<tok::token_t> &tokens, data::map_t &out) = 0;
+    };
+
+    class group_parser_t : constr_parser_t {
+    private:
+        struct named_parser {
+            constr_parser_t *parser;
+            std::string name;
+        };
+        std::list<constr_parser_t*> parsers;
+        std::unordered_map<std::string, constr_parser_t*> insertion_points;
+    public:
+        void add_insertion_point(constr_parser_t &parser, const std::string &name);
+        void add(constr_parser_t &parser);
+        void add(const std::string &ins_point, constr_parser_t &parser);
+
+        bool parse(messages::msg_stack_t &messages, data::map_t &out);
+
+        group_parser_t();
+    };
+}

src/compiler/treeifier/ast.cc

@@ -0,0 +1 @@
+#include "compiler/treeifier/ast.hh"