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95 lines
4.3 KiB
Diff
95 lines
4.3 KiB
Diff
From d3cabbc7321d349a9bffda482df5afc0d4df1ac2 Mon Sep 17 00:00:00 2001
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From: Piotr Tworek <ptworek@vewd.com>
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Date: Thu, 30 Apr 2020 21:33:47 +0000
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Subject: [PATCH] Make some of blink custom iterators STL compatible.
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Blink has recently started using functions like std::any_of with some of
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the custom iterators it provides. On Linux this works in the default
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setup using libcxx, but fails with even the most recent versions of
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libstdc++. In all cases the error message (text in bug report) complains
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about lack of matching std::__iterator_category definition.
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From what I understand the error message is basically saying those
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iterators are not STL compatible due to missing traits as described
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in https://en.cppreference.com/w/cpp/iterator/iterator_traits. Such
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traits are provided by custom iterators defined in //base, or //cc.
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This patch adds the necessary traits to iterators that are currently
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affected by this problem.
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Bug: 1076869
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Change-Id: I9950a7100c32499ba96647317fa70b87dc22eaf9
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Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2174199
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Reviewed-by: Kentaro Hara <haraken@chromium.org>
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Commit-Queue: Piotr Tworek <ptworek@vewd.com>
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Cr-Commit-Position: refs/heads/master@{#764426}
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---
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.../core/layout/ng/ng_physical_container_fragment.h | 6 ++++++
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.../blink/renderer/platform/wtf/hash_iterators.h | 12 ++++++++++++
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third_party/blink/renderer/platform/wtf/hash_table.h | 6 ++++++
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3 files changed, 24 insertions(+)
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diff --git a/third_party/blink/renderer/core/layout/ng/ng_physical_container_fragment.h b/third_party/blink/renderer/core/layout/ng/ng_physical_container_fragment.h
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index 1256e77c146..8b93107f2fc 100644
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--- a/third_party/blink/renderer/core/layout/ng/ng_physical_container_fragment.h
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+++ b/third_party/blink/renderer/core/layout/ng/ng_physical_container_fragment.h
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@@ -38,6 +38,12 @@ class CORE_EXPORT NGPhysicalContainerFragment : public NGPhysicalFragment {
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STACK_ALLOCATED();
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public:
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+ using iterator_category = std::bidirectional_iterator_tag;
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+ using value_type = NGLink;
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+ using difference_type = ptrdiff_t;
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+ using pointer = value_type*;
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+ using reference = value_type&;
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+
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ConstIterator(const NGLink* current) : current_(current) {}
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const NGLink& operator*() const { return *PostLayoutOrCurrent(); }
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diff --git a/third_party/blink/renderer/platform/wtf/hash_iterators.h b/third_party/blink/renderer/platform/wtf/hash_iterators.h
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index f8e66e6be85..6003d02c509 100644
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--- a/third_party/blink/renderer/platform/wtf/hash_iterators.h
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+++ b/third_party/blink/renderer/platform/wtf/hash_iterators.h
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@@ -53,6 +53,12 @@ struct HashTableConstIteratorAdapter<HashTableType,
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typedef HashTableConstValuesIterator<HashTableType, KeyType, MappedType>
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ValuesIterator;
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+ using iterator_category = std::bidirectional_iterator_tag;
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+ using value_type = HashTableType;
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+ using difference_type = ptrdiff_t;
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+ using pointer = value_type*;
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+ using reference = value_type&;
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+
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HashTableConstIteratorAdapter() = default;
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HashTableConstIteratorAdapter(
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const typename HashTableType::const_iterator& impl)
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@@ -94,6 +100,12 @@ struct HashTableIteratorAdapter<HashTableType,
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typedef HashTableValuesIterator<HashTableType, KeyType, MappedType>
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ValuesIterator;
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+ using iterator_category = std::bidirectional_iterator_tag;
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+ using value_type = HashTableType;
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+ using difference_type = ptrdiff_t;
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+ using pointer = value_type*;
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+ using reference = value_type&;
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+
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HashTableIteratorAdapter() = default;
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HashTableIteratorAdapter(const typename HashTableType::iterator& impl)
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: impl_(impl) {}
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diff --git a/third_party/blink/renderer/platform/wtf/hash_table.h b/third_party/blink/renderer/platform/wtf/hash_table.h
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index f596fb5d41e..5a4468d6bd1 100644
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--- a/third_party/blink/renderer/platform/wtf/hash_table.h
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+++ b/third_party/blink/renderer/platform/wtf/hash_table.h
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@@ -2204,6 +2204,12 @@ struct HashTableConstIteratorAdapter {
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STACK_ALLOCATED();
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public:
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+ using iterator_category = std::bidirectional_iterator_tag;
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+ using value_type = HashTableType;
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+ using difference_type = ptrdiff_t;
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+ using pointer = value_type*;
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+ using reference = value_type&;
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+
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HashTableConstIteratorAdapter() = default;
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HashTableConstIteratorAdapter(
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const typename HashTableType::const_iterator& impl)
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