Интернирование reference.model.symbol при наполнении референс индекса

Author: nixel2007

src/main/java/com/github/_1c_syntax/bsl/languageserver/references/GenericInterner.java

@@ -1,2 +1,39 @@
-package com.github._1c_syntax.bsl.languageserver.references;public class GenericInterner {
+/*
+ * This file is a part of BSL Language Server.
+ *
+ * Copyright (c) 2018-2022
+ * Alexey Sosnoviy <labotamy@gmail.com>, Nikita Fedkin <nixel2007@gmail.com> and contributors
+ *
+ * SPDX-License-Identifier: LGPL-3.0-or-later
+ *
+ * BSL Language Server is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3.0 of the License, or (at your option) any later version.
+ *
+ * BSL Language Server is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with BSL Language Server.
+ */
+package com.github._1c_syntax.bsl.languageserver.references;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class GenericInterner<T> {
+
+  private final Map<T, T> map = new ConcurrentHashMap<>();
+
+  public T intern(T object) {
+    var exist = map.putIfAbsent(object, object);
+    return (exist == null) ? object : exist;
+  }
+
+  public void clear() {
+    map.clear();
+  }
 }

src/main/java/com/github/_1c_syntax/bsl/languageserver/references/ReferenceIndex.java

@@ -178,7 +178,8 @@ public void addMethodCall(URI uri, String mdoRef, ModuleType moduleType, String
       .scopeName("")
       .symbolKind(SymbolKind.Method)
       .symbolName(symbolNameCanonical)
-      .build();
+      .build()
+      .intern();
 
     var location = new Location(uri, range);
     var symbolOccurrence = SymbolOccurrence.builder()
@@ -218,7 +219,8 @@ public void addVariableUsage(URI uri,
       .scopeName(methodNameCanonical)
       .symbolKind(SymbolKind.Variable)
       .symbolName(variableNameCanonical)
-      .build();
+      .build()
+      .intern();
 
     var location = new Location(uri, range);
 

src/main/java/com/github/_1c_syntax/bsl/languageserver/references/model/Symbol.java

@@ -21,6 +21,7 @@
  */
 package com.github._1c_syntax.bsl.languageserver.references.model;
 
+import com.github._1c_syntax.bsl.languageserver.references.GenericInterner;
 import com.github._1c_syntax.bsl.types.ModuleType;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
@@ -38,6 +39,8 @@
 @Builder
 public class Symbol implements Comparable<Symbol> {
 
+  private static GenericInterner<Symbol> interner = new GenericInterner<>();
+
   /**
    * Cсылка на объект метаданных в формате ВидОбъектаМетаданных.ИмяОбъекта, в котором расположен символ.
    */
@@ -63,6 +66,10 @@ public class Symbol implements Comparable<Symbol> {
    */
   String symbolName;
 
+  public Symbol intern() {
+    return interner.intern(this);
+  }
+
   @Override
   public int compareTo(@NotNull Symbol o) {
     if (this.equals(o)) {