Add support for new javascript methods to QML/JS outline

Extened AST visitor for outline, declaration and locator to include
Javascript methods, prototype functions with formal parameters for
better readability.

Change-Id: Ifbb2b157699c929412196f356b0c28ae0564f866
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>

src/plugins/qmljseditor/qmljseditordocument.cpp

@@ -327,6 +327,34 @@ protected:
 
         return false;
     }
+
+    bool visit(AST::BinaryExpression *ast)
+    {
+        AST::FieldMemberExpression *field = AST::cast<AST::FieldMemberExpression *>(ast->left);
+        AST::FunctionExpression *funcExpr = AST::cast<AST::FunctionExpression *>(ast->right);
+
+        if (field && funcExpr && funcExpr->body && (ast->op == QSOperator::Assign)) {
+            Declaration decl;
+            init(&decl, ast);
+
+            decl.text.fill(QLatin1Char(' '), _depth);
+            decl.text += field->name;
+
+            decl.text += QLatin1Char('(');
+            for (FormalParameterList *it = funcExpr->formals; it; it = it->next) {
+                if (!it->name.isEmpty())
+                    decl.text += it->name;
+
+                if (it->next)
+                    decl.text += QLatin1String(", ");
+            }
+            decl.text += QLatin1Char(')');
+
+            _declarations.append(decl);
+        }
+
+        return true;
+    }
 };
 
 class CreateRanges: protected AST::Visitor
@@ -373,6 +401,16 @@ protected:
         return true;
     }
 
+    bool visit(AST::BinaryExpression *ast)
+    {
+        auto field = AST::cast<AST::FieldMemberExpression *>(ast->left);
+        auto funcExpr = AST::cast<AST::FunctionExpression *>(ast->right);
+
+        if (field && funcExpr && funcExpr->body && (ast->op == QSOperator::Assign))
+            _ranges.append(createRange(ast, ast->firstSourceLocation(), ast->lastSourceLocation()));
+        return true;
+    }
+
     virtual bool visit(AST::UiScriptBinding *ast)
     {
         if (AST::Block *block = AST::cast<AST::Block *>(ast->statement))