From ef9499cb44f58904d55997a9f934f1e477bcba18 Mon Sep 17 00:00:00 2001
From: Joshua Haberman <jhaberman@gmail.com>
Date: Tue, 14 May 2019 16:14:22 -0700
Subject: Migrate std::unordered_map -> absl::flat_hash_map.

---
 upbc/generator.cc     |  5 ++---
 upbc/message_layout.h | 10 +++++-----
 2 files changed, 7 insertions(+), 8 deletions(-)

(limited to 'upbc')

diff --git a/upbc/generator.cc b/upbc/generator.cc
index 5843597..1337e28 100644
--- a/upbc/generator.cc
+++ b/upbc/generator.cc
@@ -1,8 +1,7 @@
 
-#include <unordered_map>
-#include <unordered_set>
 #include <memory>
 
+#include "absl/container/flat_hash_map.h"
 #include "absl/strings/ascii.h"
 #include "absl/strings/str_replace.h"
 #include "absl/strings/substitute.h"
@@ -594,7 +593,7 @@ void WriteSource(const protobuf::FileDescriptor* file, Output& output) {
     std::string fields_array_ref = "NULL";
     std::string submsgs_array_ref = "NULL";
     std::string oneofs_array_ref = "NULL";
-    std::unordered_map<const protobuf::Descriptor*, int> submsg_indexes;
+    absl::flat_hash_map<const protobuf::Descriptor*, int> submsg_indexes;
     MessageLayout layout(message);
     std::vector<const protobuf::FieldDescriptor*> sorted_submsgs =
         SortedSubmessages(message);
diff --git a/upbc/message_layout.h b/upbc/message_layout.h
index a4cb289..c2446a0 100644
--- a/upbc/message_layout.h
+++ b/upbc/message_layout.h
@@ -2,8 +2,8 @@
 #ifndef UPBC_MESSAGE_LAYOUT_H
 #define UPBC_MESSAGE_LAYOUT_H
 
-#include <unordered_map>
 #include "absl/base/macros.h"
+#include "absl/container/flat_hash_map.h"
 #include "google/protobuf/descriptor.h"
 
 namespace upbc {
@@ -70,7 +70,7 @@ class MessageLayout {
   Size Place(SizeAndAlign size_and_align);
 
   template <class K, class V>
-  static V GetMapValue(const std::unordered_map<K, V>& map, K key) {
+  static V GetMapValue(const absl::flat_hash_map<K, V>& map, K key) {
     auto iter = map.find(key);
     if (iter == map.end()) {
       fprintf(stderr, "No value for field.\n");
@@ -92,11 +92,11 @@ class MessageLayout {
   static int64_t FieldLayoutRank(
       const google::protobuf::FieldDescriptor* field);
 
-  std::unordered_map<const google::protobuf::FieldDescriptor*, Size>
+  absl::flat_hash_map<const google::protobuf::FieldDescriptor*, Size>
       field_offsets_;
-  std::unordered_map<const google::protobuf::FieldDescriptor*, int>
+  absl::flat_hash_map<const google::protobuf::FieldDescriptor*, int>
       hasbit_indexes_;
-  std::unordered_map<const google::protobuf::OneofDescriptor*, Size>
+  absl::flat_hash_map<const google::protobuf::OneofDescriptor*, Size>
       oneof_case_offsets_;
   Size maxalign_;
   Size size_;
-- 
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