From 9cb92a0a961bd4138216b85ef460ca0a7de425e2 Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Mon, 24 Mar 2014 13:16:50 -0700
Subject: [PATCH] Remove code related to old error recovery function

---
 src/compiler/build_tables/build_tables.cc |  7 -----
 src/compiler/generate_code/c_code.cc      | 31 -----------------------
 src/compiler/parse_table.h                |  1 -
 3 files changed, 39 deletions(-)

diff --git a/src/compiler/build_tables/build_tables.cc b/src/compiler/build_tables/build_tables.cc
index bfe57e5f..0e698afb 100644
--- a/src/compiler/build_tables/build_tables.cc
+++ b/src/compiler/build_tables/build_tables.cc
@@ -44,13 +44,6 @@ namespace tree_sitter {
                     ParseItemSet item_set = transition.second;
                     ParseStateId new_state_id = add_parse_state(item_set);
                     parse_table.add_action(state_id, symbol, ParseAction::Shift(new_state_id));
-
-                    if (symbol == rules::ERROR) {
-                        parse_table.error_table.insert({
-                            state_id,
-                            { new_state_id, first_set(transition.second, grammar) }
-                        });
-                    }
                 }
             }
 
diff --git a/src/compiler/generate_code/c_code.cc b/src/compiler/generate_code/c_code.cc
index b38c0d92..e36b56d7 100644
--- a/src/compiler/generate_code/c_code.cc
+++ b/src/compiler/generate_code/c_code.cc
@@ -216,37 +216,6 @@ namespace tree_sitter {
                 return "#include \"tree_sitter/parser.h\"";
             }
 
-            string recover_case(ParseStateId state, set<rules::Symbol> symbols) {
-                string result = "RECOVER(" +
-                    to_string(state) + ", " +
-                    to_string(symbols.size()) + ", EXPECT({";
-                bool started = false;
-                for (auto &symbol : symbols) {
-                    if (started) {
-                        result += ", ";
-                    }
-                    result += symbol_id(symbol);
-                    started = true;
-                }
-                return result + "}));";
-            }
-
-            string recover_function() {
-                string cases;
-                for (auto &pair : parse_table.error_table) {
-                    auto pair_for_state = pair.second;
-                    cases += _case(to_string(pair.first),
-                                   recover_case(pair_for_state.first, pair_for_state.second));
-                }
-                cases += _default(recover_case(0, set<rules::Symbol>()));
-
-                return join({
-                    "RECOVER_FN() {",
-                    indent(_switch("state", cases)),
-                    "}"
-                });
-            }
-
             string lex_function() {
                 return join({
                     "LEX_FN() {",
diff --git a/src/compiler/parse_table.h b/src/compiler/parse_table.h
index ec98aada..f3dc8eb8 100644
--- a/src/compiler/parse_table.h
+++ b/src/compiler/parse_table.h
@@ -71,7 +71,6 @@ namespace tree_sitter {
 
         std::vector<ParseState> states;
         std::set<rules::Symbol> symbols;
-        std::map<ParseStateId, std::pair<ParseStateId, std::set<rules::Symbol>>> error_table;
     };
 }