add some classes

extensions/blockmarkuplanguage.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "common.h"
+#include <iostream>
+
+template <typename C>
+class BlockMarkupLanguageIterator
+{
+	std::istreambuf_iterator<char> it;
+};

extensions/charstorage.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include "common.h"
+
+template <typename C>
+class CharStorage
+{
+public:
+	CharStorage(size_t capacity = 0)
+	{
+		storage.reserve(capacity);
+	}
+
+	int Store(const std::basic_string<C>& string)
+	{
+		return storage.insert(storage.end(), string.c_str(), string.c_str() + string.size() + 1) - storage.begin();
+	}
+
+	void FreeExcess()
+	{
+		storage.shrink_to_fit();
+	}
+
+	const C* Retrieve(int handle) const
+	{
+		return storage.data() + handle;
+	}
+
+private:
+	std::vector<C> storage;
+};

extensions/extrawindow.cpp

@@ -2,6 +2,7 @@
 #include "extension.h"
 #include "ui_extrawindow.h"
 #include "defs.h"
+#include "blockmarkuplanguage.h"
 #include <fstream>
 #include <filesystem>
 #include <process.h>
@@ -281,15 +282,15 @@ private:
 			catch (std::filesystem::filesystem_error) { return; }
 
 			dictionary.clear();
-			owningStorage.clear();
+			definitionStorage.clear();
 
 			auto StoreCopy = [&](const std::string& string)
 			{
-				return &*owningStorage.insert(owningStorage.end(), string.c_str(), string.c_str() + string.size() + 1);
+				return &*definitionStorage.insert(definitionStorage.end(), string.c_str(), string.c_str() + string.size() + 1);
 			};
 
 			std::string savedDictionary(std::istreambuf_iterator(std::ifstream(DICTIONARY_SAVE_FILE)), {});
-			owningStorage.reserve(savedDictionary.size());
+			definitionStorage.reserve(savedDictionary.size());
 			for (size_t end = 0; ;)
 			{
 				size_t term = savedDictionary.find("|TERM|", end);
@@ -300,14 +301,6 @@ private:
 					dictionary.push_back({ StoreCopy(savedDictionary.substr(term + 6, next - term - 6)), storedDefinition });
 				dictionary.push_back({ StoreCopy(savedDictionary.substr(term + 6, definition - term - 6)), storedDefinition });
 			}
-			auto oldData = owningStorage.data();
-			owningStorage.shrink_to_fit();
-			dictionary.shrink_to_fit();
-			for (auto& [term, definition] : dictionary)
-			{
-				term += owningStorage.data() - oldData;
-				definition += owningStorage.data() - oldData;
-			}
 			std::sort(dictionary.begin(), dictionary.end());
 		}
 
@@ -354,7 +347,7 @@ private:
 		}
 
 		std::filesystem::file_time_type dictionaryFileLastWrite;
-		std::vector<char> owningStorage;
+		std::vector<char> definitionStorage;
 		std::vector<QString> definitions;
 		int definitionIndex;
 	} dictionaryWindow;

extensions/replacer.cpp

@@ -1,4 +1,6 @@
 #include "extension.h"
+#include "trie.h"
+#include "charstorage.h"
 #include <cwctype>
 #include <fstream>
 #include <filesystem>
@@ -11,18 +13,14 @@ constexpr auto REPLACE_SAVE_FILE = u8"SavedReplacements.txt";
 std::atomic<std::filesystem::file_time_type> replaceFileLastWrite = {};
 std::shared_mutex m;
 
-class Trie
+class ReplacementTrie
 {
 public:
-	Trie(std::unordered_map<std::wstring, std::wstring> replacements)
+	ReplacementTrie(std::vector<std::pair<std::wstring, std::wstring>> replacements)
 	{
-		for (const auto& [original, replacement] : replacements)
-		{
-			Node* current = &root;
-			for (auto ch : original) if (!Ignore(ch)) current = Next(current, ch);
-			if (current != &root)
-				current->value = owningStorage.insert(owningStorage.end(), replacement.c_str(), replacement.c_str() + replacement.size() + 1) - owningStorage.begin();
-		}
+		for (auto& [original, replacement] : replacements)
+			if (!original.empty())
+				trie.Insert(std::wstring_view(original.c_str(), std::remove_if(original.begin(), original.end(), Ignore) - original.begin()))->SetValue(storage.Store(replacement));
 	}
 
 	std::wstring Replace(const std::wstring& sentence) const
@@ -33,17 +31,23 @@ public:
 			std::wstring_view replacement(sentence.c_str() + i, 1);
 			int originalLength = 1;
 
-			const Node* current = &root;
+			auto current = trie.Root();
 			for (int j = i; current && j <= sentence.size(); ++j)
 			{
-				if (current->value >= 0)
+				if (const wchar_t* tail = current->Tail())
+					for (; j <= sentence.size() && *tail; ++j)
+						if (Ignore(sentence[j]));
+						else if (sentence[j] == *tail) ++tail;
+						else goto doneSearchingTrie;
+				if (int* value = current->Value())
 				{
-					replacement = owningStorage.data() + current->value;
+					replacement = storage.Retrieve(*value);
 					originalLength = j - i;
 				}
-				if (!Ignore(sentence[j])) current = Next(current, sentence[j]);
+				if (!Ignore(sentence[j])) current = trie.Next(current, sentence[j]);
 			}
 		
+		doneSearchingTrie:
 			result += replacement;
 			i += originalLength;
 		}
@@ -52,7 +56,7 @@ public:
 
 	bool Empty()
 	{
-		return root.charMap.empty();
+		return trie.Root()->charMap.empty();
 	}
 
 private:
@@ -61,33 +65,19 @@ private:
 		return ch <= 0x20 || std::iswspace(ch);
 	}
 
-	template <typename Node>
-	static Node* Next(Node* node, wchar_t ch)
-	{
-		auto it = std::lower_bound(node->charMap.begin(), node->charMap.end(), ch, [](const auto& one, auto two) { return one.first < two; });
-		if (it != node->charMap.end() && it->first == ch) return it->second.get();
-		if constexpr (!std::is_const_v<Node>) return node->charMap.insert(it, { ch, std::make_unique<Node>() })->second.get();
-		return nullptr;
-	}
-
-	struct Node
-	{
-		std::vector<std::pair<wchar_t, std::unique_ptr<Node>>> charMap;
-		ptrdiff_t value = -1;
-	} root;
-
-	std::vector<wchar_t> owningStorage;
+	CharStorage<wchar_t> storage;
+	Trie<wchar_t, int> trie;
 } trie = { {} };
 
-std::unordered_map<std::wstring, std::wstring> Parse(std::wstring_view replacementScript)
+std::vector<std::pair<std::wstring, std::wstring>> Parse(std::wstring_view replacementScript)
 {
-	std::unordered_map<std::wstring, std::wstring> replacements;
+	std::vector<std::pair<std::wstring, std::wstring>> replacements;
 	for (size_t end = 0; ;)
 	{
 		size_t original = replacementScript.find(L"|ORIG|", end);
 		size_t becomes = replacementScript.find(L"|BECOMES|", original);
 		if ((end = replacementScript.find(L"|END|", becomes)) == std::wstring::npos) break;
-		replacements[std::wstring(replacementScript.substr(original + 6, becomes - original - 6))] = replacementScript.substr(becomes + 9, end - becomes - 9);
+		replacements.emplace_back(replacementScript.substr(original + 6, becomes - original - 6), replacementScript.substr(becomes + 9, end - becomes - 9));
 	}
 	return replacements;
 }
@@ -99,7 +89,7 @@ void UpdateReplacements()
 		if (replaceFileLastWrite.exchange(std::filesystem::last_write_time(REPLACE_SAVE_FILE)) == std::filesystem::last_write_time(REPLACE_SAVE_FILE)) return;
 		std::vector<BYTE> file(std::istreambuf_iterator(std::ifstream(REPLACE_SAVE_FILE, std::ios::binary)), {});
 		std::scoped_lock l(m);
-		trie = Trie(Parse({ (wchar_t*)file.data(), file.size() / sizeof(wchar_t) }));
+		trie = ReplacementTrie(Parse({ (wchar_t*)file.data(), file.size() / sizeof(wchar_t) }));
 	}
 	catch (std::filesystem::filesystem_error) { replaceFileLastWrite.store({}); }
 }
@@ -146,7 +136,7 @@ And this text ツ
 		assert(replacements.size() == 4);
 		std::wstring original = LR"(Don't replace this　
  さよなら バカ こんにちは delete this)";
-		std::wstring replaced = Trie(std::move(replacements)).Replace(original);
+		std::wstring replaced = ReplacementTrie(std::move(replacements)).Replace(original);
 		assert(replaced == L"Don't replace thisgoodbye idiot hello");
 	}
 );

extensions/trie.h

@@ -0,0 +1,121 @@
+#pragma once
+
+#include "common.h"
+#include <variant>
+
+template <typename C, typename V>
+struct Trie
+{
+	struct Node
+	{
+		union
+		{
+			std::basic_string<C> chars;
+			std::vector<std::pair<C, std::unique_ptr<Node>>> charMap;
+		};
+		uint64_t packedValue;
+		const C* Tail() const
+		{
+			return packedValue >> 63 ? chars.c_str() : nullptr;
+		}
+		V* Value() const
+		{
+			return (V*)((packedValue << 2) >> 2);
+		}
+		void SetValue(V value)
+		{
+			if (V* oldValue = Value()) *oldValue = std::move(value);
+			else packedValue = (1LL << (62 + (packedValue >> 63))) | (uint64_t)new V(std::move(value));
+		}
+		Node(bool map) :
+			packedValue(1LL << (62 + !map))
+		{
+			if (map) new (&charMap) decltype(charMap)();
+			else new (&chars) decltype(chars)();
+		}
+		~Node()
+		{
+			if (packedValue >> 63) chars.~basic_string();
+			else charMap.~vector();
+			delete Value();
+		}
+	};
+
+		template <typename Node>
+		static Node* Next(Node* node, C ch, bool makeMap = false)
+		{
+			if (node->packedValue >> 63) return nullptr;
+			auto it = std::lower_bound(node->charMap.begin(), node->charMap.end(), ch, [](const auto& one, auto two) { return one.first < two; });
+			if (it != node->charMap.end() && it->first == ch) return it->second.get();
+			if constexpr (!std::is_const_v<Node>) return node->charMap.insert(it, { ch, std::make_unique<Node>(makeMap) })->second.get();
+			return nullptr;
+		}
+
+		static void Clear(Node* node)
+		{
+			if (node->packedValue >> 63) node->chars.clear();
+			else for (auto& [_, child] : node->charMap) Clear(child.get());
+		}
+
+	std::unique_ptr<Node> root = std::make_unique<Node>(true);
+
+	Node* Insert(std::basic_string_view<C> key)
+	{
+		Node* current = root.get();
+		for (int i = 0; i < key.size(); ++i)
+		{
+			if (Node* next = Next(current, key[i], i + 1 == key.size())) current = next;
+			else
+			{
+				if (current->chars.empty()) // FIXME: how to represent last character inside map?
+				{
+					current->chars = std::basic_string(key.begin() + i, key.end());
+					if(current->chars.empty())throw;
+					break;
+				}
+				else if (current->chars == key.substr(i))
+				{
+					break;
+				}
+				else
+				{
+					auto oldChars = std::move(current->chars);
+					assert(current->Value());
+					auto oldValue = std::move(*current->Value());
+					auto keyRemaining = key.substr(i);
+					current->chars.~basic_string();
+					new (&current->charMap) decltype(current->charMap)();
+					current->packedValue ^= 3ULL << 62;
+					for (i = 0; i < oldChars.size() && i < keyRemaining.size(); ++i)
+					{
+						if (oldChars[i] == keyRemaining[i]) current = Next(current, oldChars[i], true);
+						else break;
+					}
+					if (i == oldChars.size())
+					{
+						current->SetValue(std::move(oldValue));
+					}
+					else
+					{
+						auto relocated = Next(current, oldChars[i]);
+						relocated->chars = oldChars.substr(i);
+						relocated->SetValue(std::move(oldValue));
+					}
+					if (i != keyRemaining.size()) (current = Next(current, keyRemaining[i]))->chars = std::basic_string(keyRemaining.begin() + i, keyRemaining.end());
+					break;
+				}
+			}
+		}
+		return current;
+	}
+
+	const Node* Root() const
+	{
+		return root.get();
+	}
+
+	bool Empty() const
+	{
+		return root->charMap.empty();
+	}
+};