Add JSON::isDictionary and JSON::isArray

Jay Berkenbilt
1 parent 5c5e5ca2
Showing 3 changed files with 24 additions and 0 deletions
ChangeLog
include/qpdf/JSON.hh
libqpdf/JSON.cc
@@ -4,6 +4,10 @@
 	to QPDFObjectHandle with corresponding functions added to the C
 	API. Thanks to m-holger for the contribution.
  
+2022-01-17  Jay Berkenbilt  <ejb@ql.org>
+
+	* Add isDictionary and isArray to JSON
+
 2022-01-11  Jay Berkenbilt  <ejb@ql.org>
  
 	* Bug fix: add missing characters from PDF doc encoding.
@@ -69,6 +69,12 @@ class JSON
     QPDF_DLL
     static JSON makeNull();
  
+    QPDF_DLL
+    bool isArray() const;
+
+    QPDF_DLL
+    bool isDictionary() const;
+
     // Check this JSON object against a "schema". This is not a schema
     // according to any standard. It's just a template of what the
     // JSON is supposed to contain. The checking does the following:
@@ -294,6 +294,20 @@ JSON::makeNull()
 }
  
 bool
+JSON::isArray() const
+{
+    return nullptr != dynamic_cast<JSON_array const*>(
+        this->m->value.getPointer());
+}
+
+bool
+JSON::isDictionary() const
+{
+    return nullptr != dynamic_cast<JSON_dictionary const*>(
+        this->m->value.getPointer());
+}
+
+bool
 JSON::checkSchema(JSON schema, std::list<std::string>& errors)
 {
     return checkSchemaInternal(this->m->value.getPointer(),