Highlight user defined types.

src/libs/cplusplus/CheckUndefinedSymbols.cpp

@@ -36,16 +36,211 @@
 #include <TranslationUnit.h>
 #include <Scope.h>
 #include <AST.h>
+#include <SymbolVisitor.h>
 
 #include <QCoreApplication>
 #include <QDebug>
 
 using namespace CPlusPlus;
 
+namespace {
+
+class CollectTypes: protected SymbolVisitor
+{
+    Document::Ptr _doc;
+    Snapshot _snapshot;
+    QSet<QByteArray> _types;
+    QList<ScopedSymbol *> _scopes;
+    QList<NameAST *> _names;
+    bool _mainDocument;
+
+public:
+    CollectTypes(Document::Ptr doc, const Snapshot &snapshot)
+        : _doc(doc), _snapshot(snapshot), _mainDocument(false)
+    {
+        QSet<Namespace *> processed;
+        process(doc, &processed);
+    }
+
+    const QSet<QByteArray> &types() const
+    {
+        return _types;
+    }
+
+    const QList<ScopedSymbol *> &scopes() const
+    {
+        return _scopes;
+    }
+
+    static Scope *findScope(unsigned tokenOffset, const QList<ScopedSymbol *> &scopes)
+    {
+        for (int i = scopes.size() - 1; i != -1; --i) {
+            ScopedSymbol *symbol = scopes.at(i);
+            const unsigned start = symbol->startOffset();
+            const unsigned end = symbol->endOffset();
+
+            if (tokenOffset >= start && tokenOffset < end)
+                return symbol->members();
+        }
+
+        return 0;
+    }
+
+protected:
+    void process(Document::Ptr doc, QSet<Namespace *> *processed)
+    {
+        if (! doc)
+            return;
+        else if (! processed->contains(doc->globalNamespace())) {
+            processed->insert(doc->globalNamespace());
+
+            foreach (const Document::Include &i, doc->includes())
+                process(_snapshot.document(i.fileName()), processed);
+
+            _mainDocument = (doc == _doc); // ### improve
+            accept(doc->globalNamespace());
+        }
+    }
+
+    void addType(const Identifier *id)
+    {
+        if (id)
+            _types.insert(QByteArray::fromRawData(id->chars(), id->size()));
+    }
+
+    void addType(const Name *name)
+    {
+        if (! name) {
+            return;
+
+        } else if (const QualifiedNameId *q = name->asQualifiedNameId()) {
+            for (unsigned i = 0; i < q->nameCount(); ++i)
+                addType(q->nameAt(i));
+
+        } else if (name->isNameId() || name->isTemplateNameId()) {
+            addType(name->identifier());
+
+        }
+    }
+
+    void addScope(ScopedSymbol *symbol)
+    {
+        if (_mainDocument)
+            _scopes.append(symbol);
+    }
+
+    // nothing to do
+    virtual bool visit(UsingNamespaceDirective *) { return true; }
+    virtual bool visit(UsingDeclaration *) { return true; }
+    virtual bool visit(Argument *) { return true; }
+    virtual bool visit(BaseClass *) { return true; }
+
+    virtual bool visit(Function *symbol)
+    {
+        addScope(symbol);
+        return true;
+    }
+
+    virtual bool visit(Block *symbol)
+    {
+        addScope(symbol);
+        return true;
+    }
+
+    virtual bool visit(NamespaceAlias *symbol)
+    {
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(Declaration *symbol)
+    {
+        if (symbol->isTypedef())
+            addType(symbol->name());
+
+        return true;
+    }
+
+    virtual bool visit(TypenameArgument *symbol)
+    {
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(Enum *symbol)
+    {
+        addScope(symbol);
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(Namespace *symbol)
+    {
+        addScope(symbol);
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(Class *symbol)
+    {
+        addScope(symbol);
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(ForwardClassDeclaration *symbol)
+    {
+        addType(symbol->name());
+        return true;
+    }
+
+    // Objective-C
+    virtual bool visit(ObjCBaseClass *) { return true; }
+    virtual bool visit(ObjCBaseProtocol *) { return true; }
+    virtual bool visit(ObjCPropertyDeclaration *) { return true; }
+
+    virtual bool visit(ObjCMethod *symbol)
+    {
+        addScope(symbol);
+        return true;
+    }
+
+    virtual bool visit(ObjCClass *symbol)
+    {
+        addScope(symbol);
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(ObjCForwardClassDeclaration *symbol)
+    {
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(ObjCProtocol *symbol)
+    {
+        addScope(symbol);
+        addType(symbol->name());
+        return true;
+    }
+
+    virtual bool visit(ObjCForwardProtocolDeclaration *symbol)
+    {
+        addType(symbol->name());
+        return true;
+    }
+};
+
+} // end of anonymous namespace
+
 CheckUndefinedSymbols::CheckUndefinedSymbols(TranslationUnit *unit, const LookupContext &context)
     : ASTVisitor(unit), _context(context)
 {
     _fileName = context.thisDocument()->fileName();
+    CollectTypes collectTypes(context.thisDocument(), context.snapshot());
+    _potentialTypes = collectTypes.types();
+    _scopes = collectTypes.scopes();
 }
 
 CheckUndefinedSymbols::~CheckUndefinedSymbols()
@@ -84,17 +279,19 @@ bool CheckUndefinedSymbols::visit(UsingDirectiveAST *ast)
     return false;
 }
 
-bool CheckUndefinedSymbols::visit(SimpleDeclarationAST *ast)
+bool CheckUndefinedSymbols::visit(SimpleDeclarationAST *)
 {
     return true;
 }
 
 bool CheckUndefinedSymbols::visit(NamedTypeSpecifierAST *ast)
 {
+#if 0
     if (ast->name) {
         unsigned line, column;
-        getTokenStartPosition(ast->firstToken(), &line, &column);
+        getTokenStartPosition(ast->name->firstToken(), &line, &column);
 
+        // ### use the potential types.
         Scope *enclosingScope = _context.thisDocument()->scopeAt(line, column);
         const QList<Symbol *> candidates = _context.lookup(ast->name->name, enclosingScope);
 
@@ -108,8 +305,9 @@ bool CheckUndefinedSymbols::visit(NamedTypeSpecifierAST *ast)
         if (! ty)
             warning(ast->name, QCoreApplication::translate("CheckUndefinedSymbols", "Expected a type-name"));
     }
+#endif
 
-    return false;
+    return true;
 }
 
 void CheckUndefinedSymbols::checkNamespace(NameAST *name)
@@ -131,3 +329,133 @@ void CheckUndefinedSymbols::checkNamespace(NameAST *name)
     const unsigned length = tokenAt(name->lastToken() - 1).end() - tokenAt(name->firstToken()).begin();
     warning(line, column, QCoreApplication::translate("CheckUndefinedSymbols", "Expected a namespace-name"), length);
 }
+
+bool CheckUndefinedSymbols::visit(SimpleNameAST *ast)
+{
+    if (ast->name) {
+        const QByteArray id = QByteArray::fromRawData(ast->name->identifier()->chars(), // ### move
+                                                      ast->name->identifier()->size());
+        if (_potentialTypes.contains(id)) {
+            const unsigned tokenOffset = tokenAt(ast->firstToken()).offset;
+            Scope *scope = CollectTypes::findScope(tokenOffset, _scopes); // ### move
+            if (! scope)
+                scope = _context.thisDocument()->globalSymbols();
+
+            const QList<Symbol *> candidates = _context.lookup(ast->name, scope);
+            addTypeUsage(candidates, ast);
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(TemplateIdAST *ast)
+{
+    if (ast->name) {
+        const QByteArray id = QByteArray::fromRawData(ast->name->identifier()->chars(), // ### move
+                                                      ast->name->identifier()->size());
+        if (_potentialTypes.contains(id)) {
+            Scope *scope = CollectTypes::findScope(tokenAt(ast->firstToken()).offset, _scopes); // ### move
+            if (! scope)
+                scope = _context.thisDocument()->globalSymbols();
+
+            ClassOrNamespace *b = _context.lookupType(ast->name, scope);
+            addTypeUsage(b, ast);
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(DestructorNameAST *ast)
+{
+    if (ast->name) {
+        const QByteArray id = QByteArray::fromRawData(ast->name->identifier()->chars(), // ### move
+                                                      ast->name->identifier()->size());
+        if (_potentialTypes.contains(id)) {
+            Scope *scope = CollectTypes::findScope(tokenAt(ast->firstToken()).offset, _scopes); // ### move
+            if (! scope)
+                scope = _context.thisDocument()->globalSymbols();
+
+            ClassOrNamespace *b = _context.lookupType(ast->name, scope);
+            addTypeUsage(b, ast);
+        }
+    }
+
+    return true;
+}
+
+bool CheckUndefinedSymbols::visit(QualifiedNameAST *ast)
+{
+    if (ast->name) {
+        Scope *scope = CollectTypes::findScope(tokenAt(ast->firstToken()).offset, _scopes); // ### move
+        if (! scope)
+            scope = _context.thisDocument()->globalSymbols();
+
+        ClassOrNamespace *b = 0;
+        if (NestedNameSpecifierListAST *it = ast->nested_name_specifier_list) {
+            NestedNameSpecifierAST *nested_name_specifier = it->value;
+            NameAST *class_or_namespace_name = nested_name_specifier->class_or_namespace_name; // ### remove shadowing
+
+            const Name *name = class_or_namespace_name->name;
+            b = _context.lookupType(name, scope);
+            addTypeUsage(b, class_or_namespace_name);
+
+            for (it = it->next; b && it; it = it->next) {
+                NestedNameSpecifierAST *nested_name_specifier = it->value;
+
+                if (NameAST *class_or_namespace_name = nested_name_specifier->class_or_namespace_name) {
+                    b = b->findType(class_or_namespace_name->name);
+                    addTypeUsage(b, class_or_namespace_name);
+                }
+            }
+        }
+
+        if (b && ast->unqualified_name)
+            addTypeUsage(b->find(ast->unqualified_name->name), ast->unqualified_name);
+    }
+
+    return false;
+}
+
+void CheckUndefinedSymbols::addTypeUsage(ClassOrNamespace *b, NameAST *ast)
+{
+    if (! b)
+        return;
+
+    const Token &tok = tokenAt(ast->firstToken());
+    if (tok.generated())
+        return;
+
+    unsigned line, column;
+    getTokenStartPosition(ast->firstToken(), &line, &column);
+    const unsigned length = tok.length();
+    Use use(line, column, length);
+    _typeUsages.append(use);
+    //qDebug() << "added use" << oo(ast->name) << line << column << length;
+}
+
+void CheckUndefinedSymbols::addTypeUsage(const QList<Symbol *> &candidates, NameAST *ast)
+{
+    const Token &tok = tokenAt(ast->firstToken());
+    if (tok.generated())
+        return;
+
+    unsigned line, column;
+    getTokenStartPosition(ast->firstToken(), &line, &column);
+    const unsigned length = tok.length();
+
+    foreach (Symbol *c, candidates) {
+        if (c->isTypedef() || c->isClass() || c->isEnum() || c->isForwardClassDeclaration() || c->isTypenameArgument()) {
+            Use use(line, column, length);
+            _typeUsages.append(use);
+            //qDebug() << "added use" << oo(ast->name) << line << column << length;
+            break;
+        }
+    }
+}
+
+QList<CheckUndefinedSymbols::Use> CheckUndefinedSymbols::typeUsages() const
+{
+    return _typeUsages;
+}

src/libs/cplusplus/CheckUndefinedSymbols.h

@@ -33,6 +33,7 @@
 #include "CppDocument.h"
 #include "LookupContext.h"
 #include <ASTVisitor.h>
+#include <QtCore/QSet>
 
 namespace CPlusPlus {
 
@@ -44,6 +45,17 @@ public:
 
     QList<Document::DiagnosticMessage> operator()(AST *ast);
 
+    struct Use { // ### remove me
+        unsigned line;
+        unsigned column;
+        unsigned length;
+
+        Use(unsigned line = 0, unsigned column = 0, unsigned length = 0)
+            : line(line), column(column), length(length) {}
+    };
+
+    QList<Use> typeUsages() const;
+
 protected:
     using ASTVisitor::visit;
 
@@ -51,15 +63,25 @@ protected:
     bool warning(AST *ast, const QString &text);
 
     void checkNamespace(NameAST *name);
+    void addTypeUsage(ClassOrNamespace *b, NameAST *ast);
+    void addTypeUsage(const QList<Symbol *> &candidates, NameAST *ast);
 
     virtual bool visit(UsingDirectiveAST *);
     virtual bool visit(SimpleDeclarationAST *);
     virtual bool visit(NamedTypeSpecifierAST *);
 
+    virtual bool visit(SimpleNameAST *ast);
+    virtual bool visit(DestructorNameAST *ast);
+    virtual bool visit(QualifiedNameAST *ast);
+    virtual bool visit(TemplateIdAST *ast);
+
 private:
     LookupContext _context;
     QString _fileName;
     QList<Document::DiagnosticMessage> _diagnosticMessages;
+    QSet<QByteArray> _potentialTypes;
+    QList<ScopedSymbol *> _scopes;
+    QList<Use> _typeUsages;
 };
 
 } // end of namespace CPlusPlus

src/libs/cplusplus/FindUsages.cpp

@@ -128,12 +128,14 @@ void FindUsages::reportResult(unsigned tokenIndex, const QList<Symbol *> &candid
 
 void FindUsages::reportResult(unsigned tokenIndex)
 {
-    if (_processed.contains(tokenIndex))
+    const Token &tk = tokenAt(tokenIndex);
+    if (tk.generated())
+        return;
+    else if (_processed.contains(tokenIndex))
         return;
 
     _processed.insert(tokenIndex);
 
-    const Token &tk = tokenAt(tokenIndex);
     const QString lineText = matchingLine(tk);
 
     unsigned line, col;

src/libs/cplusplus/pp-engine.cpp

@@ -779,12 +779,9 @@ void Preprocessor::preprocess(const QString &fileName, const QByteArray &source,
                     if (! env->isBuiltinMacro(spell)) {
                         Macro *m = env->resolve(spell);
                         if (m && ! m->isFunctionLike()) {
-                            QByteArray expandedDefinition;
-                            expandObjectLikeMacro(identifierToken, spell, m, &expandedDefinition);
-                            if (expandedDefinition.trimmed().isEmpty()) {
-                                out(QByteArray(spell.length(), ' '));
-                                continue;
-                            }
+                            // expand object-like macros.
+                            processObjectLikeMacro(identifierToken, spell, m);
+                            continue;
                         }
                     }
                     out(spell);

src/plugins/cppeditor/cppeditor.cpp

@@ -265,6 +265,10 @@ protected:
 
     bool findMemberForToken(unsigned tokenIdx, NameAST *ast)
     {
+        const Token &tok = tokenAt(tokenIdx);
+        if (tok.generated())
+            return false;
+
         unsigned line, column;
         getTokenStartPosition(tokenIdx, &line, &column);
 
@@ -303,6 +307,10 @@ protected:
         for (TemplateArgumentListAST *arg = ast->template_argument_list; arg; arg = arg->next)
             accept(arg->value);
 
+        const Token &tok = tokenAt(ast->identifier_token);
+        if (tok.generated())
+            return false;
+
         unsigned line, column;
         getTokenStartPosition(ast->firstToken(), &line, &column);
 
@@ -1781,6 +1789,7 @@ void CPPEditor::setFontSettings(const TextEditor::FontSettings &fs)
     m_occurrencesUnusedFormat.clearForeground();
     m_occurrencesUnusedFormat.setToolTip(tr("Unused variable"));
     m_occurrenceRenameFormat = fs.toTextCharFormat(QLatin1String(TextEditor::Constants::C_OCCURRENCES_RENAME));
+    m_typeFormat = fs.toTextCharFormat(QLatin1String(TextEditor::Constants::C_TYPE));
 
     // only set the background, we do not want to modify foreground properties set by the syntax highlighter or the link
     m_occurrencesFormat.clearForeground();
@@ -1889,6 +1898,21 @@ void CPPEditor::updateSemanticInfo(const SemanticInfo &semanticInfo)
         }
 
         setExtraSelections(UndefinedSymbolSelection, undefinedSymbolSelections);
+
+        QList<QTextEdit::ExtraSelection> typeSelections;
+        foreach (const SemanticInfo::Use &use, semanticInfo.typeUsages) {
+            QTextCursor cursor(document());
+            cursor.setPosition(document()->findBlockByNumber(use.line - 1).position() + use.column - 1);
+            cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, use.length);
+
+            QTextEdit::ExtraSelection sel;
+            sel.cursor = cursor;
+            sel.format = m_typeFormat;
+            typeSelections.append(sel);
+        }
+
+        setExtraSelections(TypeSelection, typeSelections);
+
     }
 
     setExtraSelections(UnusedSymbolSelection, unusedSelections);
@@ -1987,12 +2011,14 @@ SemanticInfo SemanticHighlighter::semanticInfo(const Source &source)
     Snapshot snapshot;
     Document::Ptr doc;
     QList<Document::DiagnosticMessage> diagnosticMessages;
+    QList<SemanticInfo::Use> typeUsages;
 
     if (! source.force && revision == source.revision) {
         m_mutex.lock();
         snapshot = m_lastSemanticInfo.snapshot; // ### TODO: use the new snapshot.
         doc = m_lastSemanticInfo.doc;
         diagnosticMessages = m_lastSemanticInfo.diagnosticMessages;
+        typeUsages = m_lastSemanticInfo.typeUsages;
         m_mutex.unlock();
     }
 
@@ -2003,17 +2029,14 @@ SemanticInfo SemanticHighlighter::semanticInfo(const Source &source)
         doc = snapshot.documentFromSource(preprocessedCode, source.fileName);
         doc->check();
 
-        Document::Ptr documentInSnapshot = snapshot.document(source.fileName);
-        if (! documentInSnapshot) {
-            // use the newly parsed document.
-            documentInSnapshot = doc;
-        }
-
         LookupContext context(doc, snapshot);
 
         if (TranslationUnit *unit = doc->translationUnit()) {
             CheckUndefinedSymbols checkUndefinedSymbols(unit, context);
             diagnosticMessages = checkUndefinedSymbols(unit->ast());
+            typeUsages.clear();
+            foreach (const CheckUndefinedSymbols::Use &use, checkUndefinedSymbols.typeUsages()) // ### remove me
+                typeUsages.append(SemanticInfo::Use(use.line, use.column, use.length));
         }
     }
 
@@ -2035,6 +2058,7 @@ SemanticInfo SemanticHighlighter::semanticInfo(const Source &source)
     semanticInfo.hasD = useTable.hasD;
     semanticInfo.forced = source.force;
     semanticInfo.diagnosticMessages = diagnosticMessages;
+    semanticInfo.typeUsages = typeUsages;
 
     return semanticInfo;
 }

src/plugins/cppeditor/cppeditor.h

@@ -88,7 +88,8 @@ public:
     bool forced: 1;
     CPlusPlus::Snapshot snapshot;
     CPlusPlus::Document::Ptr doc;
-    LocalUseMap localUses;
+    LocalUseMap localUses; // ### rename
+    QList<Use> typeUsages;
     QList<CPlusPlus::Document::DiagnosticMessage> diagnosticMessages;
 };
 
@@ -299,6 +300,7 @@ private:
     QTextCharFormat m_occurrencesFormat;
     QTextCharFormat m_occurrencesUnusedFormat;
     QTextCharFormat m_occurrenceRenameFormat;
+    QTextCharFormat m_typeFormat;
 
     QList<QTextEdit::ExtraSelection> m_renameSelections;
     int m_currentRenameSelection;

src/plugins/cppeditor/cpphighlighter.cpp

@@ -360,11 +360,14 @@ void CppHighlighter::highlightWord(QStringRef word, int position, int length)
 {
     // try to highlight Qt 'identifiers' like QObject and Q_PROPERTY
     // but don't highlight words like 'Query'
-    if (word.length() > 1
-        && word.at(0) == QLatin1Char('Q')
-        && (word.at(1).isUpper()
-            || word.at(1) == QLatin1Char('_')
-            || word.at(1) == QLatin1Char('t'))) {
+
+    if (word.length() > 1 && word.at(0) == QLatin1Char('Q')) {
+        for (int i = 1; i < word.length(); ++i) {
+            const QChar &ch = word.at(i);
+            if (! (ch.isUpper() || ch == QLatin1Char('_')))
+                return;
+        }
+
         setFormat(position, length, m_formats[CppTypeFormat]);
     }
 }

src/plugins/texteditor/basetexteditor.h

@@ -340,6 +340,7 @@ public:
         FakeVimSelection,
         OtherSelection,
         SnippetPlaceholderSelection,