QmlJS: Update QML parser using the one from qtdeclarative 5.15

We need to do this because the new "required" keyword should be
recognized by Qt Creator.

This is not a verbatim copy of the QML parser from qtdeclarative. A few
data structures have changed that would require large scale changes in
otherwise unrelated parts of the code. For example, all Visitors need to
handle recursion depth errors now and the DiagnosticMessage only has
line and column now, no longer begin and legth.

Change-Id: Iea5b04e27b07e0cba55d64b844315af9828acbf7
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/qmljs/parser/qmljsparser_p.h

@@ -1,5 +1,5 @@
 
-#line 178 "qmljs.g"
+#line 182 "qmljs.g"
 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
@@ -122,6 +122,9 @@ public:
       AST::ExportsList *ExportsList;
       AST::ExportClause *ExportClause;
       AST::ExportDeclaration *ExportDeclaration;
+      AST::TypeAnnotation *TypeAnnotation;
+      AST::TypeArgumentList *TypeArgumentList;
+      AST::Type *Type;
 
       AST::UiProgram *UiProgram;
       AST::UiHeaderItemList *UiHeaderItemList;
@@ -139,6 +142,7 @@ public:
       AST::UiArrayMemberList *UiArrayMemberList;
       AST::UiQualifiedId *UiQualifiedId;
       AST::UiEnumMemberList *UiEnumMemberList;
+      AST::UiVersionSpecifier *UiVersionSpecifier;
     };
 
 public:
@@ -217,6 +221,9 @@ protected:
     inline QStringRef &stringRef(int index)
     { return string_stack [tos + index - 1]; }
 
+    inline QStringRef &rawStringRef(int index)
+    { return rawString_stack [tos + index - 1]; }
+
     inline AST::SourceLocation &loc(int index)
     { return location_stack [tos + index - 1]; }
 
@@ -225,13 +232,25 @@ protected:
     void pushToken(int token);
     int lookaheadToken(Lexer *lexer);
 
+    static DiagnosticMessage compileError(const AST::SourceLocation &location,
+                                          const QString &message, Severity::Enum kind = Severity::Error)
+    {
+        DiagnosticMessage error;
+        error.loc = location;
+        error.message = message;
+        error.kind = kind;
+        return error;
+    }
+
     void syntaxError(const AST::SourceLocation &location, const char *message) {
-        diagnostic_messages.append(DiagnosticMessage(Severity::Error, location, QLatin1String(message)));
+        diagnostic_messages.append(compileError(location, QLatin1String(message)));
      }
      void syntaxError(const AST::SourceLocation &location, const QString &message) {
-         diagnostic_messages.append(DiagnosticMessage(Severity::Error, location, message));
+        diagnostic_messages.append(compileError(location, message));
       }
 
+    bool ensureNoFunctionTypeAnnotations(AST::TypeAnnotation *returnTypeAnnotation, AST::FormalParameterList *formals);
+
 protected:
     Engine *driver;
     MemoryPool *pool;
@@ -241,6 +260,7 @@ protected:
     int *state_stack = nullptr;
     AST::SourceLocation *location_stack = nullptr;
     QVector<QStringRef> string_stack;
+    QVector<QStringRef> rawString_stack;
 
     AST::Node *program = nullptr;
 
@@ -252,11 +272,13 @@ protected:
        double dval;
        AST::SourceLocation loc;
        QStringRef spell;
+       QStringRef raw;
     };
 
     int yytoken = -1;
     double yylval = 0.;
     QStringRef yytokenspell;
+    QStringRef yytokenraw;
     AST::SourceLocation yylloc;
     AST::SourceLocation yyprevlloc;
 
@@ -281,27 +303,27 @@ protected:
 
 
 
-#line 1511 "qmljs.g"
+#line 1686 "qmljs.g"
 
-#define J_SCRIPT_REGEXPLITERAL_RULE1 128
+#define J_SCRIPT_REGEXPLITERAL_RULE1 144
 
-#line 1523 "qmljs.g"
+#line 1698 "qmljs.g"
 
-#define J_SCRIPT_REGEXPLITERAL_RULE2 129
+#define J_SCRIPT_REGEXPLITERAL_RULE2 145
 
-#line 3022 "qmljs.g"
+#line 3198 "qmljs.g"
 
-#define J_SCRIPT_EXPRESSIONSTATEMENTLOOKAHEAD_RULE 421
+#define J_SCRIPT_EXPRESSIONSTATEMENTLOOKAHEAD_RULE 435
 
-#line 3653 "qmljs.g"
+#line 3850 "qmljs.g"
 
-#define J_SCRIPT_CONCISEBODYLOOKAHEAD_RULE 499
+#define J_SCRIPT_CONCISEBODYLOOKAHEAD_RULE 505
 
-#line 4181 "qmljs.g"
+#line 4389 "qmljs.g"
 
-#define J_SCRIPT_EXPORTDECLARATIONLOOKAHEAD_RULE 569
+#define J_SCRIPT_EXPORTDECLARATIONLOOKAHEAD_RULE 574
 
-#line 4469 "qmljs.g"
+#line 4673 "qmljs.g"
 
 QT_QML_END_NAMESPACE