Added support for override/final and enum classes

Change-Id: I6dfe9dd606781046ff5a1ed61315741d2f332cb8
Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>

src/libs/3rdparty/cplusplus/AST.cpp

@@ -523,6 +523,8 @@ unsigned ClassSpecifierAST::firstToken() const
     if (name)
         if (unsigned candidate = name->firstToken())
             return candidate;
+    if (final_token)
+        return final_token;
     if (colon_token)
         return colon_token;
     if (base_clause_list)
@@ -557,6 +559,8 @@ unsigned ClassSpecifierAST::lastToken() const
             return candidate;
     if (colon_token)
         return colon_token + 1;
+    if (final_token)
+        return final_token + 1;
     if (name)
         if (unsigned candidate = name->lastToken())
             return candidate;

src/libs/3rdparty/cplusplus/AST.h

@@ -1168,6 +1168,7 @@ public:
     unsigned classkey_token;
     SpecifierListAST *attribute_list;
     NameAST *name;
+    unsigned final_token;
     unsigned colon_token;
     BaseSpecifierListAST *base_clause_list;
     unsigned dot_dot_dot_token;
@@ -1183,6 +1184,7 @@ public:
         : classkey_token(0)
         , attribute_list(0)
         , name(0)
+        , final_token(0)
         , colon_token(0)
         , base_clause_list(0)
         , dot_dot_dot_token(0)

src/libs/3rdparty/cplusplus/ASTClone.cpp

@@ -362,6 +362,7 @@ ClassSpecifierAST *ClassSpecifierAST::clone(MemoryPool *pool) const
         *ast_iter = new (pool) SpecifierListAST((iter->value) ? iter->value->clone(pool) : 0);
     if (name)
         ast->name = name->clone(pool);
+    ast->final_token = final_token;
     ast->colon_token = colon_token;
     for (BaseSpecifierListAST *iter = base_clause_list, **ast_iter = &ast->base_clause_list;
          iter; iter = iter->next, ast_iter = &(*ast_iter)->next)

src/libs/3rdparty/cplusplus/ASTMatcher.cpp

@@ -593,6 +593,8 @@ bool ASTMatcher::match(ClassSpecifierAST *node, ClassSpecifierAST *pattern)
     else if (! AST::match(node->name, pattern->name, this))
         return false;
 
+    pattern->final_token = node->final_token;
+
     pattern->colon_token = node->colon_token;
 
     if (! pattern->base_clause_list)

src/libs/3rdparty/cplusplus/Bind.cpp

@@ -2660,6 +2660,20 @@ bool Bind::visit(TemplateIdAST *ast)
 bool Bind::visit(SimpleSpecifierAST *ast)
 {
     switch (tokenKind(ast->specifier_token)) {
+        case T_IDENTIFIER: {
+                const Identifier *id = tokenAt(ast->specifier_token).identifier;
+                if (id->isEqualTo(control()->cpp11Override())) {
+                    if (_type.isOverride())
+                        translationUnit()->error(ast->specifier_token, "duplicate `override'");
+                    _type.setOverride(true);
+                }
+                else if (id->isEqualTo(control()->cpp11Final())) {
+                    if (_type.isFinal())
+                        translationUnit()->error(ast->specifier_token, "duplicate `final'");
+                    _type.setFinal(true);
+                }
+            }
+            break;
         case T_CONST:
             if (_type.isConst())
                 translationUnit()->error(ast->specifier_token, "duplicate `%s'", spell(ast->specifier_token));
@@ -3106,6 +3120,8 @@ bool Bind::visit(FunctionDeclaratorAST *ast)
     // propagate the cv-qualifiers
     fun->setConst(type.isConst());
     fun->setVolatile(type.isVolatile());
+    fun->setOverride(type.isOverride());
+    fun->setFinal(type.isFinal());
 
     this->exceptionSpecification(ast->exception_specification, type);
     if (ast->as_cpp_initializer != 0) {

src/libs/3rdparty/cplusplus/Control.cpp

@@ -507,6 +507,8 @@ public:
     const Identifier *objcRetainId;
     const Identifier *objcCopyId;
     const Identifier *objcNonatomicId;
+    const Identifier *cpp11Override;
+    const Identifier *cpp11Final;
     TopLevelDeclarationProcessor *processor;
 };
 
@@ -525,6 +527,9 @@ Control::Control()
     d->objcRetainId = identifier("retain");
     d->objcCopyId = identifier("copy");
     d->objcNonatomicId = identifier("nonatomic");
+
+    d->cpp11Override = identifier("override");
+    d->cpp11Final = identifier("final");
 }
 
 Control::~Control()
@@ -764,6 +769,12 @@ const Identifier *Control::objcCopyId() const
 const Identifier *Control::objcNonatomicId() const
 { return d->objcNonatomicId; }
 
+const Identifier *Control::cpp11Override() const
+{ return d->cpp11Override; }
+
+const Identifier *Control::cpp11Final() const
+{ return d->cpp11Final; }
+
 Symbol **Control::firstSymbol() const
 {
     if (d->symbols.empty())

src/libs/3rdparty/cplusplus/Control.h

@@ -178,6 +178,9 @@ public:
     const Identifier *objcRetainId() const;
     const Identifier *objcCopyId() const;
     const Identifier *objcNonatomicId() const;
+    // C++11 context keywords
+    const Identifier *cpp11Override() const;
+    const Identifier *cpp11Final() const;
 
     const OperatorNameId *findOperatorNameId(OperatorNameId::Kind operatorId) const;
 

src/libs/3rdparty/cplusplus/FullySpecifiedType.cpp

@@ -55,6 +55,8 @@ FullySpecifiedType FullySpecifiedType::qualifiedType() const
 
     ty.setInline(false);
     ty.setVirtual(false);
+    ty.setOverride(false);
+    ty.setFinal(false);
     ty.setExplicit(false);
 
     ty.setDeprecated(false);
@@ -140,6 +142,18 @@ bool FullySpecifiedType::isVirtual() const
 void FullySpecifiedType::setVirtual(bool isVirtual)
 { f._isVirtual = isVirtual; }
 
+bool FullySpecifiedType::isOverride() const
+{ return f._isOverride; }
+
+void FullySpecifiedType::setOverride(bool isOverride)
+{ f._isOverride = isOverride; }
+
+bool FullySpecifiedType::isFinal() const
+{ return f._isFinal; }
+
+void FullySpecifiedType::setFinal(bool isFinal)
+{ f._isFinal = isFinal; }
+
 bool FullySpecifiedType::isExplicit() const
 { return f._isExplicit; }
 
@@ -226,6 +240,8 @@ void FullySpecifiedType::copySpecifiers(const FullySpecifiedType &type)
     // function specifiers
     f._isInline = type.f._isInline;
     f._isVirtual = type.f._isVirtual;
+    f._isOverride = type.f._isOverride;
+    f._isFinal = type.f._isFinal;
     f._isExplicit = type.f._isExplicit;
 }
 

src/libs/3rdparty/cplusplus/FullySpecifiedType.h

@@ -79,6 +79,12 @@ public:
     bool isVirtual() const;
     void setVirtual(bool isVirtual);
 
+    bool isOverride() const;
+    void setOverride(bool isOverride);
+
+    bool isFinal() const;
+    void setFinal(bool isFinal);
+
     bool isExplicit() const;
     void setExplicit(bool isExplicit);
 
@@ -132,6 +138,8 @@ private:
         // function specifiers
         unsigned _isInline: 1;
         unsigned _isVirtual: 1;
+        unsigned _isOverride: 1;
+        unsigned _isFinal: 1;
         unsigned _isExplicit: 1;
 
         // speficiers from attributes

src/libs/3rdparty/cplusplus/Parser.cpp

@@ -1178,6 +1178,40 @@ bool Parser::parseCvQualifiers(SpecifierListAST *&node)
     return start != cursor();
 }
 
+/**
+ * \brief Handles override and final from C++ 2011, they are pseudo keywords and has special meaning only in function declaration
+ */
+bool Parser::parseOverrideFinalQualifiers(SpecifierListAST *&node)
+{
+    DEBUG_THIS_RULE();
+
+    if (!_cxx0xEnabled)
+        return false;
+
+    unsigned start = cursor();
+
+    SpecifierListAST **ast = &node;
+    while (*ast)
+        ast = &(*ast)->next;
+
+    while (LA() == T_IDENTIFIER) {
+        const Identifier &id = *(_translationUnit->tokenAt(cursor()).identifier);
+
+        if (id.equalTo(_control->cpp11Override())
+                || id.equalTo(_control->cpp11Final())) {
+            SimpleSpecifierAST *spec = new (_pool) SimpleSpecifierAST;
+            spec->specifier_token = consumeToken();
+            *ast = new (_pool) SpecifierListAST(spec);
+            ast = &(*ast)->next;
+        }
+        else {
+            break;
+        }
+    }
+
+    return (start != cursor());
+}
+
 bool Parser::parsePtrOperator(PtrOperatorListAST *&node)
 {
     DEBUG_THIS_RULE();
@@ -1442,6 +1476,7 @@ bool Parser::parseDeclarator(DeclaratorAST *&node, SpecifierListAST *decl_specif
             ast->rparen_token = consumeToken();
             // ### parse attributes
             parseCvQualifiers(ast->cv_qualifier_list);
+            parseOverrideFinalQualifiers(ast->cv_qualifier_list);
             // ### parse ref-qualifiers
             parseExceptionSpecification(ast->exception_specification);
 
@@ -1572,11 +1607,26 @@ bool Parser::parseAbstractDeclarator(DeclaratorAST *&node, SpecifierListAST *dec
     return true;
 }
 
+/**
+ * @brief Reads enumeration type declaration, examples:
+ * @code
+    enum {
+        debug = 1
+    };
+    enum class Format {
+        FormatPNG,
+        FormatJPEG
+    };
+ * @endcode
+ */
 bool Parser::parseEnumSpecifier(SpecifierListAST *&node)
 {
     DEBUG_THIS_RULE();
     if (LA() == T_ENUM) {
         unsigned enum_token = consumeToken();
+        if (_cxx0xEnabled && LA() == T_CLASS)
+            consumeToken();
+
         NameAST *name = 0;
         parseName(name);
         if (LA() == T_LBRACE) {
@@ -1874,10 +1924,13 @@ bool Parser::parseClassSpecifier(SpecifierListAST *&node)
     }
 
     if (LA(1) == T_IDENTIFIER && LA(2) == T_IDENTIFIER) {
+        const Identifier *id = tok(2).identifier;
+        if (!id->equalTo(_control->cpp11Final())) {
             warning(cursor(), "skip identifier `%s'",
                                       tok().spell());
             consumeToken();
         }
+    }
 
     NameAST *name = 0;
     parseName(name);
@@ -1889,6 +1942,13 @@ bool Parser::parseClassSpecifier(SpecifierListAST *&node)
 
     unsigned colon_token = 0;
     unsigned dot_dot_dot_token = 0;
+    unsigned final_token = 0;
+
+    if (LA() == T_IDENTIFIER) {
+        const Identifier *id = tok().identifier;
+        if (id->equalTo(_control->cpp11Final()))
+            final_token = consumeToken();
+    }
 
     if (LA() == T_COLON || LA() == T_LBRACE) {
         BaseSpecifierListAST *base_clause_list = 0;
@@ -1919,6 +1979,7 @@ bool Parser::parseClassSpecifier(SpecifierListAST *&node)
         ClassSpecifierAST *ast = new (_pool) ClassSpecifierAST;
         ast->classkey_token = classkey_token;
         ast->attribute_list = attributes;
+        ast->final_token = final_token;
         ast->name = name;
         ast->colon_token = colon_token;
         ast->base_clause_list = base_clause_list;
@@ -3772,8 +3833,11 @@ bool Parser::parseSimpleDeclaration(DeclarationAST *&node, ClassSpecifierAST *de
         } else if (! has_type_specifier && lookAtClassKey()) {
             unsigned startOfTypeSpecifier = cursor();
             if (! parseElaboratedTypeSpecifier(*decl_specifier_seq_ptr) ||
-                (LA() == T_COLON || LA() == T_LBRACE || (LA(0) == T_IDENTIFIER && LA(1) == T_IDENTIFIER &&
+                (LA() == T_COLON || LA() == T_LBRACE
-                                                         (LA(2) == T_COLON || LA(2) == T_LBRACE)))) {
+                 || (LA(0) == T_IDENTIFIER && LA(1) == T_IDENTIFIER // MACRO Name followed by : or {
+                     && (LA(2) == T_COLON || LA(2) == T_LBRACE))
+                 || (LA(0) == T_IDENTIFIER && LA(1) == T_IDENTIFIER && LA(2) == T_IDENTIFIER && // MACRO Name final followed by : or {
+                     (LA(3) == T_COLON || LA(3) == T_LBRACE)))) {
                 rewind(startOfTypeSpecifier);
                 if (! parseClassSpecifier(*decl_specifier_seq_ptr)) {
                     error(startOfTypeSpecifier,

src/libs/3rdparty/cplusplus/Parser.h

@@ -82,6 +82,7 @@ public:
     bool parseConstantExpression(ExpressionAST *&node);
     bool parseCtorInitializer(CtorInitializerAST *&node);
     bool parseCvQualifiers(SpecifierListAST *&node);
+    bool parseOverrideFinalQualifiers(SpecifierListAST *&node);
     bool parseDeclaratorOrAbstractDeclarator(DeclaratorAST *&node, SpecifierListAST *decl_specifier_list);
     bool parseDeclaration(DeclarationAST *&node);
     bool parseSimpleDeclaration(DeclarationAST *&node, ClassSpecifierAST *declaringClass = 0);

src/libs/3rdparty/cplusplus/Symbols.cpp

@@ -358,6 +358,18 @@ bool Function::isVirtual() const
 void Function::setVirtual(bool isVirtual)
 { f._isVirtual = isVirtual; }
 
+bool Function::isOverride() const
+{ return f._isOverride; }
+
+void Function::setOverride(bool isOverride)
+{ f._isOverride = isOverride; }
+
+bool Function::isFinal() const
+{ return f._isFinal; }
+
+void Function::setFinal(bool isFinal)
+{ f._isFinal = isFinal; }
+
 bool Function::isVariadic() const
 { return f._isVariadic; }
 

src/libs/3rdparty/cplusplus/Symbols.h

@@ -323,6 +323,12 @@ public:
     bool isVirtual() const;
     void setVirtual(bool isVirtual);
 
+    bool isOverride() const;
+    void setOverride(bool isOverride);
+
+    bool isFinal() const;
+    void setFinal(bool isFinal);
+
     bool isVariadic() const;
     void setVariadic(bool isVariadic);
 
@@ -371,6 +377,8 @@ private:
     FullySpecifiedType _returnType;
     struct Flags {
         unsigned _isVirtual: 1;
+        unsigned _isOverride: 1;
+        unsigned _isFinal: 1;
         unsigned _isVariadic: 1;
         unsigned _isPureVirtual: 1;
         unsigned _isConst: 1;

src/libs/cplusplus/DeprecatedGenTemplateInstance.cpp

@@ -134,6 +134,8 @@ private:
             fun->setConst(funTy->isConst());
             fun->setVolatile(funTy->isVolatile());
             fun->setVirtual(funTy->isVirtual());
+            fun->setOverride(funTy->isOverride());
+            fun->setFinal(funTy->isFinal());
             fun->setAmbiguous(funTy->isAmbiguous());
             fun->setVariadic(funTy->isVariadic());
 

src/plugins/cppeditor/cppeditor.cpp

@@ -1775,6 +1775,8 @@ void CPPEditorWidget::setFontSettings(const TextEditor::FontSettings &fs)
             fs.toTextCharFormat(TextEditor::C_PREPROCESSOR);
     m_semanticHighlightFormatMap[SemanticInfo::FunctionUse] =
             fs.toTextCharFormat(TextEditor::C_FUNCTION);
+    m_semanticHighlightFormatMap[SemanticInfo::PseudoKeywordUse] =
+            fs.toTextCharFormat(TextEditor::C_KEYWORD);
     m_keywordFormat = fs.toTextCharFormat(TextEditor::C_KEYWORD);
 
     // only set the background, we do not want to modify foreground properties set by the syntax highlighter or the link

src/plugins/cpptools/cppchecksymbols.cpp

@@ -506,6 +506,14 @@ bool CheckSymbols::visit(SimpleDeclarationAST *ast)
                                                                 decl->enclosingScope()),
                                                 nameAST, funTy->argumentCount())) {
                         declrIdNameAST = nameAST;
+
+                        // Add a diagnostic message if non-virtual function has override/final marker
+                        if ((_usages.back().kind != SemanticInfo::VirtualMethodUse)) {
+                            if (funTy->isOverride())
+                                warning(declrIdNameAST, "Only virtual methods can be marked `override'");
+                            else if (funTy->isFinal())
+                                warning(declrIdNameAST, "Only virtual methods can be marked `final'");
+                        }
                     }
                 }
             }
@@ -952,6 +960,37 @@ bool CheckSymbols::visit(LabeledStatementAST *ast)
     return false;
 }
 
+
+/**
+ * \brief Highlights "override" and "final" pseudokeywords like true keywords
+ */
+bool CheckSymbols::visit(SimpleSpecifierAST *ast)
+{
+    if (ast->specifier_token)
+    {
+        const Token &tk = tokenAt(ast->specifier_token);
+        if (tk.is(T_IDENTIFIER))
+        {
+            const Identifier &id = *(tk.identifier);
+            if (id.equalTo(_doc->control()->cpp11Override())
+                    || id.equalTo(_doc->control()->cpp11Final()))
+            {
+                addUse(ast->specifier_token, SemanticInfo::PseudoKeywordUse);
+            }
+        }
+    }
+
+    return false;
+}
+
+bool CheckSymbols::visit(ClassSpecifierAST *ast)
+{
+    if (ast->final_token)
+        addUse(ast->final_token, SemanticInfo::PseudoKeywordUse);
+
+    return true;
+}
+
 bool CheckSymbols::visit(FunctionDefinitionAST *ast)
 {
     AST *thisFunction = _astStack.takeLast();

src/plugins/cpptools/cppchecksymbols.h

@@ -151,6 +151,8 @@ protected:
 
     virtual bool visit(GotoStatementAST *ast);
     virtual bool visit(LabeledStatementAST *ast);
+    virtual bool visit(SimpleSpecifierAST *ast);
+    virtual bool visit(ClassSpecifierAST *ast);
 
     virtual bool visit(MemInitializerAST *ast);
     virtual bool visit(EnumeratorAST *ast);

src/plugins/cpptools/cppsemanticinfo.h

@@ -52,7 +52,8 @@ public:
         VirtualMethodUse,
         LabelUse,
         MacroUse,
-        FunctionUse
+        FunctionUse,
+        PseudoKeywordUse
     };
     typedef TextEditor::SemanticHighlighter::Result Use;