C++11: Accept ref-qualifiers in function declarators.

Means
void foo() const &; void bar() &&;
and the corresponding pointer-to-member declarators
now parse.

Change-Id: Idbf295bd4f51cd5d9e38efcac1940b8cc2e32fce
Reviewed-by: hjk <qthjk@ovi.com>

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

@@ -1369,6 +1369,8 @@ unsigned FunctionDeclaratorAST::firstToken() const
     if (cv_qualifier_list)
         if (unsigned candidate = cv_qualifier_list->firstToken())
             return candidate;
+    if (ref_qualifier_token)
+        return ref_qualifier_token;
     if (exception_specification)
         if (unsigned candidate = exception_specification->firstToken())
             return candidate;
@@ -1393,6 +1395,8 @@ unsigned FunctionDeclaratorAST::lastToken() const
     if (exception_specification)
         if (unsigned candidate = exception_specification->lastToken())
             return candidate;
+    if (ref_qualifier_token)
+        return ref_qualifier_token + 1;
     if (cv_qualifier_list)
         if (unsigned candidate = cv_qualifier_list->lastToken())
             return candidate;
@@ -3067,12 +3071,16 @@ unsigned PointerToMemberAST::firstToken() const
     if (cv_qualifier_list)
         if (unsigned candidate = cv_qualifier_list->firstToken())
             return candidate;
+    if (ref_qualifier_token)
+        return ref_qualifier_token;
     return 0;
 }
 
 /** \generated */
 unsigned PointerToMemberAST::lastToken() const
 {
+    if (ref_qualifier_token)
+        return ref_qualifier_token + 1;
     if (cv_qualifier_list)
         if (unsigned candidate = cv_qualifier_list->lastToken())
             return candidate;

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

@@ -1457,6 +1457,7 @@ public:
     ParameterDeclarationClauseAST *parameter_declaration_clause;
     unsigned rparen_token;
     SpecifierListAST *cv_qualifier_list;
+    unsigned ref_qualifier_token;
     ExceptionSpecificationAST *exception_specification;
     TrailingReturnTypeAST *trailing_return_type;
     ExpressionAST *as_cpp_initializer;
@@ -1470,6 +1471,7 @@ public:
         , parameter_declaration_clause(0)
         , rparen_token(0)
         , cv_qualifier_list(0)
+        , ref_qualifier_token(0)
         , exception_specification(0)
         , trailing_return_type(0)
         , as_cpp_initializer(0)
@@ -2825,6 +2827,7 @@ public:
     NestedNameSpecifierListAST *nested_name_specifier_list;
     unsigned star_token;
     SpecifierListAST *cv_qualifier_list;
+    unsigned ref_qualifier_token;
 
 public:
     PointerToMemberAST()
@@ -2832,6 +2835,7 @@ public:
         , nested_name_specifier_list(0)
         , star_token(0)
         , cv_qualifier_list(0)
+        , ref_qualifier_token(0)
     {}
 
     virtual PointerToMemberAST *asPointerToMember() { return this; }

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

@@ -487,6 +487,7 @@ FunctionDeclaratorAST *FunctionDeclaratorAST::clone(MemoryPool *pool) const
     for (SpecifierListAST *iter = cv_qualifier_list, **ast_iter = &ast->cv_qualifier_list;
          iter; iter = iter->next, ast_iter = &(*ast_iter)->next)
         *ast_iter = new (pool) SpecifierListAST((iter->value) ? iter->value->clone(pool) : 0);
+    ast->ref_qualifier_token = ref_qualifier_token;
     if (exception_specification)
         ast->exception_specification = exception_specification->clone(pool);
     if (trailing_return_type)
@@ -1068,6 +1069,7 @@ PointerToMemberAST *PointerToMemberAST::clone(MemoryPool *pool) const
     for (SpecifierListAST *iter = cv_qualifier_list, **ast_iter = &ast->cv_qualifier_list;
          iter; iter = iter->next, ast_iter = &(*ast_iter)->next)
         *ast_iter = new (pool) SpecifierListAST((iter->value) ? iter->value->clone(pool) : 0);
+    ast->ref_qualifier_token = ref_qualifier_token;
     return ast;
 }
 

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

@@ -809,6 +809,8 @@ bool ASTMatcher::match(FunctionDeclaratorAST *node, FunctionDeclaratorAST *patte
     else if (! AST::match(node->cv_qualifier_list, pattern->cv_qualifier_list, this))
         return false;
 
+    pattern->ref_qualifier_token = node->ref_qualifier_token;
+
     if (! pattern->exception_specification)
         pattern->exception_specification = node->exception_specification;
     else if (! AST::match(node->exception_specification, pattern->exception_specification, this))
@@ -1817,6 +1819,8 @@ bool ASTMatcher::match(PointerToMemberAST *node, PointerToMemberAST *pattern)
     else if (! AST::match(node->cv_qualifier_list, pattern->cv_qualifier_list, this))
         return false;
 
+    pattern->ref_qualifier_token = node->ref_qualifier_token;
+
     return true;
 }
 

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

@@ -1176,6 +1176,21 @@ bool Parser::parseCvQualifiers(SpecifierListAST *&node)
     return start != cursor();
 }
 
+bool Parser::parseRefQualifier(unsigned &ref_qualifier)
+{
+    DEBUG_THIS_RULE();
+
+    if (!_cxx0xEnabled)
+        return false;
+
+    if (LA() == T_AMPER || LA() == T_AMPER_AMPER) {
+        ref_qualifier = consumeToken();
+        return true;
+    }
+
+    return false;
+}
+
 /**
  * \brief Handles override and final from C++ 2011, they are pseudo keywords and has special meaning only in function declaration
  */
@@ -1474,8 +1489,7 @@ 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
+            parseRefQualifier(ast->ref_qualifier_token);
             parseExceptionSpecification(ast->exception_specification);
 
             if (_cxx0xEnabled && ! node->ptr_operator_list && LA() == T_ARROW) {
@@ -1494,6 +1508,8 @@ bool Parser::parseDeclarator(DeclaratorAST *&node, SpecifierListAST *decl_specif
                     parseTrailingReturnType(ast->trailing_return_type);
             }
 
+            parseOverrideFinalQualifiers(ast->cv_qualifier_list);
+
             *postfix_ptr = new (_pool) PostfixDeclaratorListAST(ast);
             postfix_ptr = &(*postfix_ptr)->next;
         } else if (LA() == T_LBRACKET) {
@@ -1579,6 +1595,7 @@ bool Parser::parseAbstractDeclarator(DeclaratorAST *&node, SpecifierListAST *dec
                     ast->rparen_token = consumeToken();
             }
             parseCvQualifiers(ast->cv_qualifier_list);
+            parseRefQualifier(ast->ref_qualifier_token);
             parseExceptionSpecification(ast->exception_specification);
             *postfix_ptr = new (_pool) PostfixDeclaratorListAST(ast);
             postfix_ptr = &(*postfix_ptr)->next;

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

@@ -82,6 +82,7 @@ public:
     bool parseConstantExpression(ExpressionAST *&node);
     bool parseCtorInitializer(CtorInitializerAST *&node);
     bool parseCvQualifiers(SpecifierListAST *&node);
+    bool parseRefQualifier(unsigned &ref_qualifier);
     bool parseOverrideFinalQualifiers(SpecifierListAST *&node);
     bool parseDeclaratorOrAbstractDeclarator(DeclaratorAST *&node, SpecifierListAST *decl_specifier_list);
     bool parseDeclaration(DeclarationAST *&node);

tests/auto/cplusplus/cxx11/data/refQualifier.1.cpp

@@ -0,0 +1,21 @@
+void foo() noexcept;
+class C {
+    void foo() const noexcept final override;
+    void foo() const & noexcept final override;
+    void foo() const && noexcept final override;
+    auto foo() const noexcept -> void final override;
+    auto foo() const & noexcept -> void final override;
+    auto foo() const && noexcept -> void final override;
+    void foo();
+    void foo() &;
+    void foo() &&;
+};
+
+int main() {
+    void (C::*p)() const;
+    void (C::*p)() const &;
+    void (C::*p)() const &&;
+    void (C::*p)();
+    void (C::*p)() &;
+    void (C::*p)() &&;
+}

tests/auto/cplusplus/cxx11/tst_cxx11.cpp

@@ -139,6 +139,7 @@ void tst_cxx11::parse_data()
     QTest::newRow("braceInitializers.1") << "braceInitializers.1.cpp" << "braceInitializers.1.errors.txt";
     QTest::newRow("braceInitializers.2") << "braceInitializers.2.cpp" << "";
     QTest::newRow("defaultdeleteInitializer.1") << "defaultdeleteInitializer.1.cpp" << "";
+    QTest::newRow("refQualifier.1") << "refQualifier.1.cpp" << "";
 }
 
 void tst_cxx11::parse()

tests/tools/cplusplus-dump/dumpers.inc

@@ -479,6 +479,8 @@ virtual bool visit(FunctionDeclaratorAST *ast)
         terminal(ast->rparen_token, ast);
     for (SpecifierListAST *iter = ast->cv_qualifier_list; iter; iter = iter->next)
         nonterminal(iter->value);
+    if (ast->ref_qualifier_token)
+        terminal(ast->ref_qualifier_token, ast);
     nonterminal(ast->exception_specification);
     nonterminal(ast->trailing_return_type);
     nonterminal(ast->as_cpp_initializer);
@@ -1028,6 +1030,8 @@ virtual bool visit(PointerToMemberAST *ast)
         terminal(ast->star_token, ast);
     for (SpecifierListAST *iter = ast->cv_qualifier_list; iter; iter = iter->next)
         nonterminal(iter->value);
+    if (ast->ref_qualifier_token)
+        terminal(ast->ref_qualifier_token, ast);
     return false;
 }