1 files changed, 40 insertions, 0 deletions
diff --git a/src/iso19111/io.cpp b/src/iso19111/io.cpp
index 220ee967..578234b4 100644
--- a/src/iso19111/io.cpp
+++ b/src/iso19111/io.cpp
@@ -141,6 +141,7 @@ struct WKTFormatter::Private {
     std::vector<bool> stackHasChild_{};
     std::vector<bool> stackHasId_{false};
     std::vector<bool> stackEmptyKeyword_{};
+    std::vector<bool> stackDisableUsage_{};
     std::vector<bool> outputUnitStack_{true};
     std::vector<bool> outputIdStack_{true};
     std::vector<UnitOfMeasureNNPtr> axisLinearUnitStack_{
@@ -272,6 +273,11 @@ const std::string &WKTFormatter::toString() const {
     if (d->outputUnitStack_.size() != 1)
         throw FormattingException(
             "Unbalanced pushOutputUnit() / popOutputUnit()");
+    if (d->stackHasId_.size() != 1)
+        throw FormattingException("Unbalanced pushHasId() / popHasId()");
+    if (!d->stackDisableUsage_.empty())
+        throw FormattingException(
+            "Unbalanced pushDisableUsage() / popDisableUsage()");
 
     return d->result_;
 }
@@ -556,6 +562,28 @@ bool WKTFormatter::outputId() const {
 
 // ---------------------------------------------------------------------------
 
+void WKTFormatter::pushHasId(bool hasId) { d->stackHasId_.push_back(hasId); }
+
+// ---------------------------------------------------------------------------
+
+void WKTFormatter::popHasId() { d->stackHasId_.pop_back(); }
+
+// ---------------------------------------------------------------------------
+
+void WKTFormatter::pushDisableUsage() { d->stackDisableUsage_.push_back(true); }
+
+// ---------------------------------------------------------------------------
+
+void WKTFormatter::popDisableUsage() { d->stackDisableUsage_.pop_back(); }
+
+// ---------------------------------------------------------------------------
+
+bool WKTFormatter::outputUsage() const {
+    return outputId() && d->stackDisableUsage_.empty();
+}
+
+// ---------------------------------------------------------------------------
+
 void WKTFormatter::pushAxisLinearUnit(const UnitOfMeasureNNPtr &unit) {
     d->axisLinearUnitStack_.push_back(unit);
 }
@@ -634,6 +662,18 @@ bool WKTFormatter::primeMeridianInDegree() const {
 
 // ---------------------------------------------------------------------------
 
+bool WKTFormatter::idOnTopLevelOnly() const {
+    return d->params_.idOnTopLevelOnly_;
+}
+
+// ---------------------------------------------------------------------------
+
+bool WKTFormatter::topLevelHasId() const {
+    return d->stackHasId_.size() >= 2 && d->stackHasId_[1];
+}
+
+// ---------------------------------------------------------------------------
+
 WKTFormatter::Version WKTFormatter::version() const {
     return d->params_.version_;
 }