From ff9e5d6ea30ca7286f02477b482772e32e551b64 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Mon, 8 Jun 2020 22:54:35 -0400
Subject: [PATCH] Fix #112

---
 peglib.h      |  6 ++++++
 test/test2.cc | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/peglib.h b/peglib.h
index 75a3b56..3fa9c97 100644
--- a/peglib.h
+++ b/peglib.h
@@ -1762,6 +1762,7 @@ struct AssignIDToDefinition : public Ope::Visitor {
   void visit(Holder &ope) override;
   void visit(Reference &ope) override;
   void visit(Whitespace &ope) override { ope.ope_->accept(*this); }
+  void visit(PrecedenceClimbing &ope) override;
 
   std::unordered_map<void *, size_t> ids;
 };
@@ -2733,6 +2734,11 @@ inline void AssignIDToDefinition::visit(Reference &ope) {
   }
 }
 
+inline void AssignIDToDefinition::visit(PrecedenceClimbing &ope) {
+  ope.atom_->accept(*this);
+  ope.binop_->accept(*this);
+}
+
 inline void TokenChecker::visit(WeakHolder & /*ope*/) { has_rule_ = true; }
 
 inline void TokenChecker::visit(Reference &ope) {
diff --git a/test/test2.cc b/test/test2.cc
index a054975..9a91aa8 100644
--- a/test/test2.cc
+++ b/test/test2.cc
@@ -325,6 +325,24 @@ TEST_CASE("Packrat parser test with macro", "[packrat]")
     REQUIRE(ret == true);
 }
 
+TEST_CASE("Packrat parser test with precedence expression parser", "[packrat]") {
+  peg::parser parser(R"(
+    Expression  <- Atom (Operator Atom)* { precedence L + - L * / }
+    Atom        <- _? Number _?
+    Number      <- [0-9]+
+    Operator    <- '+' / '-' / '*' / '/'
+    _           <- ' '+
+  )");
+
+  bool ret = parser;
+  REQUIRE(ret == true);
+
+  parser.enable_packrat_parsing();
+
+  ret = parser.parse(" 1 + 2 * 3 ");
+  REQUIRE(ret == true);
+}
+
 TEST_CASE("Backreference test", "[backreference]")
 {
     parser parser(R"(