C++: Share symbol finder across editor instances

Change-Id: I75880597d237bbbe1393dd02153cedba1165bed6
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

src/plugins/cppeditor/cppeditor.cpp

@@ -412,6 +412,8 @@ CPPEditor::CPPEditor(CPPEditorWidget *editor)
     m_context.add(TextEditor::Constants::C_TEXTEDITOR);
 }
 
+Q_GLOBAL_STATIC(CppTools::SymbolFinder, symbolFinder)
+
 CPPEditorWidget::CPPEditorWidget(QWidget *parent)
     : TextEditor::BaseTextEditorWidget(parent)
     , m_currentRenameSelection(NoCurrentRenameSelection)
@@ -420,7 +422,6 @@ CPPEditorWidget::CPPEditorWidget(QWidget *parent)
     , m_firstRenameChange(false)
     , m_objcEnabled(false)
     , m_commentsSettings(CppTools::CppToolsSettings::instance()->commentsSettings())
-    , m_symbolFinder(new CppTools::SymbolFinder)
 {
     m_initialized = false;
     qRegisterMetaType<CppEditor::Internal::SemanticInfo>("CppEditor::Internal::SemanticInfo");
@@ -1078,7 +1079,7 @@ void CPPEditorWidget::switchDeclarationDefinition()
                 openCppEditorAt(linkToSymbol(best.first()));
 
         } else if (lastVisibleSymbol && lastVisibleSymbol->isDeclaration() && lastVisibleSymbol->type()->isFunctionType()) {
-            if (Symbol *def = m_symbolFinder->findMatchingDefinition(lastVisibleSymbol, snapshot))
+            if (Symbol *def = symbolFinder()->findMatchingDefinition(lastVisibleSymbol, snapshot))
                 openCppEditorAt(linkToSymbol(def));
         }
     }
@@ -1174,12 +1175,12 @@ CPPEditorWidget::Link CPPEditorWidget::attemptFuncDeclDef(const QTextCursor &cur
     Symbol *target = 0;
     if (FunctionDefinitionAST *funDef = declParent->asFunctionDefinition()) {
         QList<Declaration *> candidates =
-                m_symbolFinder->findMatchingDeclaration(LookupContext(doc, snapshot),
+                symbolFinder()->findMatchingDeclaration(LookupContext(doc, snapshot),
                                                         funDef->symbol);
         if (!candidates.isEmpty()) // TODO: improve disambiguation
             target = candidates.first();
     } else if (declParent->asSimpleDeclaration()) {
-        target = m_symbolFinder->findMatchingDefinition(funcDecl->symbol, snapshot);
+        target = symbolFinder()->findMatchingDefinition(funcDecl->symbol, snapshot);
     }
 
     if (target) {
@@ -1430,7 +1431,7 @@ CPPEditorWidget::Link CPPEditorWidget::findLinkAt(const QTextCursor &cursor,
                     def = 0; // jump to declaration then.
 
                 if (symbol->isForwardClassDeclaration())
-                    def = m_symbolFinder->findMatchingClassDeclaration(symbol, snapshot);
+                    def = symbolFinder()->findMatchingClassDeclaration(symbol, snapshot);
             }
 
             link = linkToSymbol(def ? def : symbol);
@@ -1466,7 +1467,7 @@ Symbol *CPPEditorWidget::findDefinition(Symbol *symbol, const Snapshot &snapshot
     else if (! symbol->type()->isFunctionType())
         return 0; // not a function declaration
 
-    return m_symbolFinder->findMatchingDefinition(symbol, snapshot);
+    return symbolFinder()->findMatchingDefinition(symbol, snapshot);
 }
 
 unsigned CPPEditorWidget::editorRevision() const
@@ -2256,11 +2257,6 @@ void CPPEditorWidget::applyDeclDefLinkChanges(bool jumpToMatch)
     updateFunctionDeclDefLink();
 }
 
-QSharedPointer<CppTools::SymbolFinder> CPPEditorWidget::symbolFinder() const
-{
-    return m_symbolFinder;
-}
-
 void CPPEditorWidget::abortDeclDefLink()
 {
     if (!m_declDefLink)

src/plugins/cppeditor/cppeditor.h

@@ -65,7 +65,6 @@ class CppModelManagerInterface;
 namespace CppTools {
 class CppCodeStyleSettings;
 class CppRefactoringFile;
-class SymbolFinder;
 }
 
 namespace TextEditor {
@@ -201,8 +200,6 @@ public:
     QSharedPointer<FunctionDeclDefLink> declDefLink() const;
     void applyDeclDefLinkChanges(bool jumpToMatch);
 
-    QSharedPointer<CppTools::SymbolFinder> symbolFinder() const;
-
 Q_SIGNALS:
     void outlineModelIndexChanged(const QModelIndex &index);
 
@@ -336,7 +333,6 @@ private:
     QSharedPointer<FunctionDeclDefLink> m_declDefLink;
 
     CppTools::CommentsSettings m_commentsSettings;
-    QSharedPointer<CppTools::SymbolFinder> m_symbolFinder;
 };
 
 

src/plugins/cppeditor/cppelementevaluator.cpp

@@ -34,7 +34,6 @@
 
 #include <coreplugin/ifile.h>
 #include <cpptools/cpptoolsreuse.h>
-#include <cpptools/symbolfinder.h>
 
 #include <FullySpecifiedType.h>
 #include <Literals.h>
@@ -186,8 +185,7 @@ void CppElementEvaluator::handleLookupItemMatch(const Snapshot &snapshot,
                            || declaration->asTemplate()->declaration()->isForwardClassDeclaration()))) {
             if (declaration->isForwardClassDeclaration())
                 if (Symbol *classDeclaration =
-                        m_editor->symbolFinder()->findMatchingClassDeclaration(
-                            declaration, snapshot)) {
+                        m_symbolFinder.findMatchingClassDeclaration(declaration, snapshot)) {
                     declaration = classDeclaration;
                 }
             CppClass *cppClass = new CppClass(declaration);

src/plugins/cppeditor/cppelementevaluator.h

@@ -36,7 +36,7 @@
 #include "cppeditor.h"
 
 #include <texteditor/helpitem.h>
-
+#include <cpptools/symbolfinder.h>
 #include <cplusplus/CppDocument.h>
 #include <cplusplus/Overview.h>
 
@@ -92,6 +92,7 @@ private:
     bool m_lookupDerivedClasses;
     QSharedPointer<CppElement> m_element;
     QString m_diagnosis;
+    CppTools::SymbolFinder m_symbolFinder;
 };
 
 class CppElement

src/plugins/cpptools/symbolfinder.cpp

@@ -65,7 +65,7 @@ public:
 
 } // end of anonymous namespace
 
-static const int kMaxSize = 10;
+static const int kMaxCacheSize = 10;
 
 SymbolFinder::SymbolFinder()
 {}
@@ -339,7 +339,7 @@ void SymbolFinder::trackCacheUse(const QString &referenceFile)
     m_recent.append(referenceFile);
 
     // We don't want this to grow too much.
-    if (m_recent.size() > kMaxSize) {
+    if (m_recent.size() > kMaxCacheSize) {
         const QString &oldest = m_recent.takeFirst();
         m_filePriorityCache.remove(oldest);
         m_fileMetaCache.remove(oldest);