Show select expressions in column headers in custom queries

src/db/db/dbLayoutQuery.cc

@@ -1938,9 +1938,11 @@ struct SelectFilterPropertyIDs
   SelectFilterPropertyIDs (LayoutQuery *q)
   {
     data               = q->register_property ("data", LQ_variant);
+    expressions        = q->register_property ("expressions", LQ_variant);
   }
 
   unsigned int data;                // data                 -> An array of the selected values
+  unsigned int expressions;         // data                 -> An array with the expressions
 };
 
 class DB_PUBLIC SelectFilterReportingState
@@ -2037,7 +2039,16 @@ class DB_PUBLIC SelectFilterState
     }
   }
 
-  virtual void reset (FilterStateBase *previous) 
+  void get_expressions (tl::Variant &v)
+  {
+    std::vector<tl::Variant> vd;
+    v = tl::Variant (vd.begin (), vd.end ());
+    for (std::vector<tl::Expression>::const_iterator e = m_expressions.begin (); e != m_expressions.end (); ++e) {
+      v.push (e->text ());
+    }
+  }
+
+  virtual void reset (FilterStateBase *previous)
   {
     if (m_has_sorting) {
 
@@ -2082,6 +2093,9 @@ class DB_PUBLIC SelectFilterState
     if (id == m_pids.data) {
       get_data (v);
       return true;
+    } else if (id == m_pids.expressions) {
+      get_expressions (v);
+      return true;
     } else if (m_in_data_eval) {
       return FilterStateBase::get_property (id, v);
     } else {

src/lay/lay/laySearchReplaceDialog.cc

@@ -78,6 +78,15 @@ SearchReplaceResults::clear ()
   m_has_more = false;
 }
 
+void
+SearchReplaceResults::set_data_column_headers (const tl::Variant &v)
+{
+  m_data_column_headers = v;
+  if (v.is_list ()) {
+    m_data_columns = std::max (v.get_list ().size (), m_data_columns);
+  }
+}
+
 void 
 SearchReplaceResults::push_back (const tl::Variant &v)
 {
@@ -168,7 +177,13 @@ SearchReplaceResults::headerData (int section, Qt::Orientation /*orientation*/,
 {
   if (role == Qt::DisplayRole) {
     if (! m_data_result.empty ()) {
-      if (section == 0) {
+      if (m_data_column_headers.is_list ()) {
+        if (section < int (m_data_column_headers.get_list ().size ())) {
+          return QVariant (m_data_column_headers.get_list () [section].to_string ());
+        } else {
+          return QVariant (QString ());
+        }
+      } else if (section == 0) {
         return QVariant (QObject::tr ("Value"));
       } else {
         return QVariant (QString ());
@@ -1774,6 +1789,7 @@ SearchReplaceDialog::query_to_model (SearchReplaceResults &model, const db::Layo
   bool res = false;
 
   int data_prop_id = lq.has_property ("data") ? int (lq.property_by_name ("data")) : -1;
+  int expressions_prop_id = lq.has_property ("expressions") ? int (lq.property_by_name ("expressions")) : -1;
   int shape_prop_id = lq.has_property ("shape") ? int (lq.property_by_name ("shape")) : -1;
   int layer_index_prop_id = lq.has_property ("layer_index") ? int (lq.property_by_name ("layer_index")) : -1;
   int instance_prop_id = lq.has_property ("inst") ? int (lq.property_by_name ("inst")) : -1;
@@ -1784,6 +1800,11 @@ SearchReplaceDialog::query_to_model (SearchReplaceResults &model, const db::Layo
   int parent_cell_index_prop_id = lq.has_property ("parent_cell_index") ? int (lq.property_by_name ("parent_cell_index")) : -1;
   int initial_cell_index_prop_id = lq.has_property ("initial_cell_index") ? int (lq.property_by_name ("initial_cell_index")) : -1;
 
+  tl::Variant ve;
+  if (expressions_prop_id >= 0 && iq.get (expressions_prop_id, ve)) {
+    model.set_data_column_headers (ve);
+  }
+
   while (! iq.at_end ()) {
 
     if (++n > max_item_count) {

src/lay/lay/laySearchReplaceDialog.h

@@ -98,6 +98,7 @@ Q_OBJECT
   SearchReplaceResults ();
 
   void clear ();
+  void set_data_column_headers (const tl::Variant &v);
   void push_back (const tl::Variant &v);
   void push_back (const QueryShapeResult &v);
   void push_back (const QueryInstResult &v);
@@ -169,6 +170,7 @@ Q_OBJECT
   std::vector<QueryInstResult> m_inst_result;
   std::vector<QueryCellResult> m_cell_result;
   size_t m_data_columns;
+  tl::Variant m_data_column_headers;
   mutable int m_last_column_count;
   std::map<db::cell_index_type, std::string> m_cellname_map;
   std::map<unsigned int, db::LayerProperties> m_lp_map;

src/tl/tl/tlExpression.cc

@@ -4059,7 +4059,6 @@ Eval::parse (Expression &expr, const std::string &s, bool top)
   expr = Expression (this, s);
 
   tl::Extractor ex (s.c_str ());
-  tl::Extractor ex0 = ex;
   ExpressionParserContext context (&expr, ex);
 
   if (top) {
@@ -4074,6 +4073,8 @@ Eval::parse (Expression &expr, const std::string &s, bool top)
 void 
 Eval::parse (Expression &expr, tl::Extractor &ex, bool top)
 {
+  ex.skip ();
+
   expr = Expression (this, ex.get ());
 
   tl::Extractor ex0 = ex;
@@ -4093,6 +4094,8 @@ Eval::parse (Expression &expr, tl::Extractor &ex, bool top)
 std::string 
 Eval::parse_expr (tl::Extractor &ex, bool top)
 {
+  ex.skip ();
+
   tl::Eval eval (0, true);
   Expression expr (&eval, ex.get ());