Fix unnecessary throw

[odcread.git] / alien.h

diff --git a/alien.h b/alien.h
index 7447f953cc9ec3e4ee9b987853cb4b94f1629d9f..77db1febc2239e3d12886ff7ee8e44e2a8edc90f 100644 (file)
--- a/alien.h
+++ b/alien.h
@@ -3,6 +3,7 @@
 
 #include <oberon.h>
 #include <store.h>
+#include <visitor.h>
 #include <iostream>
 #include <vector>
 #include <string>
@@ -14,7 +15,7 @@ namespace odc {
  */
 struct AlienComponent {
        virtual std::string toString() = 0;
-       virtual std::string toPlainText() = 0;
+       virtual void accept(Visitor &visitor) const = 0;
 };
 
 /**
@@ -27,7 +28,7 @@ struct AlienPiece : public AlienComponent {
        AlienPiece(const char * const data, const size_t len);
 
        virtual std::string toString();
-       virtual std::string toPlainText();
+       virtual void accept(Visitor &visitor) const;
 };
 
 /**
@@ -39,9 +40,14 @@ struct AlienPart : public AlienComponent {
        AlienPart(Store * const store);
 
        virtual std::string toString();
-       virtual std::string toPlainText();
+       virtual void accept(Visitor &visitor) const;
 };
 
+/**
+ * Any type that's not registered is treated as an "Alien".
+ * This allows us to read files even if they contain things we're not aware of.
+ * The alien will consist of AlienComponents, some of which we may be able to read.
+ */
 class Alien : public Store {
        const TypePath d_path;
        std::vector<AlienComponent*> d_comps;
@@ -57,7 +63,7 @@ class Alien : public Store {
        // comps-: AlienComp    (** the constituent components of this alien store **)
 
        virtual std::string toString();
-       virtual std::string toPlainText();
+       virtual void accept(Visitor &visitor) const;
 };
 
 }