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diff --git a/xsd/xsd/cxx/tree/default-value.hxx b/xsd/xsd/cxx/tree/default-value.hxx
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+// file      : xsd/cxx/tree/default-value.hxx
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSD_CXX_TREE_DEFAULT_VALUE_HXX
+#define XSD_CXX_TREE_DEFAULT_VALUE_HXX
+
+#include <libxsd-frontend/semantic-graph.hxx>
+#include <libxsd-frontend/traversal.hxx>
+
+#include <xsd/cxx/tree/elements.hxx>
+
+namespace CXX
+{
+  namespace Tree
+  {
+    struct IsLiteralValue: IsFundamentalType, Traversal::Complex
+    {
+      IsLiteralValue (bool& r);
+
+      virtual void
+      traverse (SemanticGraph::Complex&);
+
+    private:
+      Traversal::Inherits inherits_;
+    };
+
+    struct LiteralValue: Traversal::Fundamental::Byte,
+                         Traversal::Fundamental::UnsignedByte,
+                         Traversal::Fundamental::Short,
+                         Traversal::Fundamental::UnsignedShort,
+                         Traversal::Fundamental::Int,
+                         Traversal::Fundamental::UnsignedInt,
+                         Traversal::Fundamental::Long,
+                         Traversal::Fundamental::UnsignedLong,
+                         Traversal::Fundamental::Integer,
+                         Traversal::Fundamental::NonPositiveInteger,
+                         Traversal::Fundamental::NonNegativeInteger,
+                         Traversal::Fundamental::PositiveInteger,
+                         Traversal::Fundamental::NegativeInteger,
+
+                         Traversal::Fundamental::Boolean,
+
+                         Traversal::Fundamental::Float,
+                         Traversal::Fundamental::Double,
+                         Traversal::Fundamental::Decimal,
+
+                         Traversal::Complex,
+
+                         Context
+    {
+      LiteralValue (Context&);
+
+      String
+      dispatch (SemanticGraph::Node& type, String const& value);
+
+      // Handle inheritance.
+      //
+      virtual void
+      traverse (SemanticGraph::Complex&);
+
+      // Boolean.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::Boolean&);
+
+      // Integral types.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::Byte&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::UnsignedByte&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Short&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::UnsignedShort&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Int&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::UnsignedInt&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Long&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::UnsignedLong&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Integer&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NonPositiveInteger&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NonNegativeInteger&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::PositiveInteger&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NegativeInteger&);
+
+      // Floats.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::Float&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Double&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Decimal&);
+
+    private:
+      String value_;
+      String literal_;
+
+      Traversal::Inherits inherits_;
+    };
+
+    // Some initialization (e.g., list) need a function body while others
+    // (e.g., *binary) require extra data.
+    //
+    struct InitKind: Traversal::List,
+                     Traversal::Complex,
+
+                     Traversal::Fundamental::Base64Binary,
+                     Traversal::Fundamental::HexBinary,
+
+                     Traversal::Fundamental::NameTokens,
+                     Traversal::Fundamental::IdRefs,
+                     Traversal::Fundamental::Entities
+    {
+      enum Kind
+      {
+        simple,
+        data,
+        function
+      };
+
+      // Should be simple initially.
+      //
+      InitKind (Kind& r);
+
+      virtual void
+      traverse (SemanticGraph::List&);
+
+      virtual void
+      traverse (SemanticGraph::Complex&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Base64Binary&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::HexBinary&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NameTokens&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::IdRefs&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Entities&);
+
+    private:
+      Kind& r_;
+      Traversal::Inherits inherits_;
+    };
+
+    struct InitValue: Traversal::List,
+                      Traversal::Union,
+                      Traversal::Complex,
+
+                      Traversal::AnyType,
+                      Traversal::AnySimpleType,
+
+                      Traversal::Fundamental::String,
+                      Traversal::Fundamental::NormalizedString,
+                      Traversal::Fundamental::Token,
+                      Traversal::Fundamental::Name,
+                      Traversal::Fundamental::NameToken,
+                      Traversal::Fundamental::NameTokens,
+                      Traversal::Fundamental::NCName,
+                      Traversal::Fundamental::Language,
+
+                      Traversal::Fundamental::QName,
+
+                      Traversal::Fundamental::Id,
+                      Traversal::Fundamental::IdRef,
+                      Traversal::Fundamental::IdRefs,
+
+                      Traversal::Fundamental::AnyURI,
+
+                      Traversal::Fundamental::Base64Binary,
+                      Traversal::Fundamental::HexBinary,
+
+                      Traversal::Fundamental::Date,
+                      Traversal::Fundamental::DateTime,
+                      Traversal::Fundamental::Duration,
+                      Traversal::Fundamental::Day,
+                      Traversal::Fundamental::Month,
+                      Traversal::Fundamental::MonthDay,
+                      Traversal::Fundamental::Year,
+                      Traversal::Fundamental::YearMonth,
+                      Traversal::Fundamental::Time,
+
+                      Traversal::Fundamental::Entity,
+                      Traversal::Fundamental::Entities,
+
+                      Context
+    {
+      InitValue (Context&);
+
+      void
+      data (String const& data)
+      {
+        data_ = data;
+        dispatch_count_ = 0;
+      }
+
+      void
+      dispatch (SemanticGraph::Node& type, String const& value);
+
+      virtual void
+      traverse (SemanticGraph::List&);
+
+      virtual void
+      traverse (SemanticGraph::Union&);
+
+      virtual void
+      traverse (SemanticGraph::Complex&);
+
+      // anyType & anySimpleType.
+      //
+      virtual void
+      traverse (SemanticGraph::AnyType&);
+
+      virtual void
+      traverse (SemanticGraph::AnySimpleType&);
+
+      // Strings.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::String&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NormalizedString&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Token&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NameToken&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NameTokens&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Name&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::NCName&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Language&);
+
+      // Qualified name.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::QName&);
+
+      // ID/IDREF.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::Id&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::IdRef&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::IdRefs&);
+
+      // URI.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::AnyURI&);
+
+      // Binary.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::Base64Binary&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::HexBinary&);
+
+      // Date/time.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::Date&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::DateTime&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Duration&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Day&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Month&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::MonthDay&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Year&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::YearMonth&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Time&);
+
+      // Entity.
+      //
+      virtual void
+      traverse (SemanticGraph::Fundamental::Entity&);
+
+      virtual void
+      traverse (SemanticGraph::Fundamental::Entities&);
+
+    private:
+      void
+      string_sequence_type (SemanticGraph::Type& element_type);
+
+      void
+      time_zone (size_t pos);
+
+    private:
+      String value_;
+      String data_;
+      size_t dispatch_count_;
+      MemberTypeName type_name_;
+      LiteralValue literal_value_;
+    };
+  }
+}
+
+#endif // XSD_CXX_TREE_DEFAULT_VALUE_HXX