From 76bcf09fde0b981879ebb76dce0514e03ff88ad4 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 6 Oct 2015 08:45:41 +0200
Subject: Rename dependency condition to constraint, add more operator<<

---
 bpkg/manifest     | 10 ++++++++--
 bpkg/manifest.cxx | 28 +++++++++++++++++++++++++---
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/bpkg/manifest b/bpkg/manifest
index 8f5d975..0c7c693 100644
--- a/bpkg/manifest
+++ b/bpkg/manifest
@@ -237,16 +237,19 @@ namespace bpkg
   inline std::ostream&
   operator<< (std::ostream& os, comparison c) {return os << to_string (c);}
 
-  struct dependency_condition
+  struct dependency_constraint
   {
     comparison operation;
     bpkg::version version;
   };
 
+  std::ostream&
+  operator<< (std::ostream&, const dependency_constraint&);
+
   struct dependency
   {
     std::string name;
-    butl::optional<dependency_condition> condition;
+    butl::optional<dependency_constraint> constraint;
   };
 
   std::ostream&
@@ -263,6 +266,9 @@ namespace bpkg
         : conditional (d), comment (std::move (c)) {}
   };
 
+  std::ostream&
+  operator<< (std::ostream&, const dependency_alternatives&);
+
   // requires
   //
   class requirement_alternatives: public strings
diff --git a/bpkg/manifest.cxx b/bpkg/manifest.cxx
index cc0065b..771cfaa 100644
--- a/bpkg/manifest.cxx
+++ b/bpkg/manifest.cxx
@@ -384,13 +384,35 @@ namespace bpkg
     else throw invalid_argument ("invalid comparion operator '" + s + "'");
   }
 
+  inline ostream&
+  operator<< (ostream& o, const dependency_constraint& c)
+  {
+    return o << c.operation << ' ' << c.version;
+  }
+
   ostream&
   operator<< (ostream& o, const dependency& d)
   {
     o << d.name;
 
-    if (d.condition)
-      o << " " << d.condition->operation << " " << d.condition->version;
+    if (d.constraint)
+      o << ' ' << *d.constraint;
+
+    return o;
+  }
+
+  ostream&
+  operator<< (ostream& o, const dependency_alternatives& as)
+  {
+    if (as.conditional)
+      o << "? ";
+
+    bool f (true);
+    for (const dependency& a: as)
+      o << (f ? (f = false, "") : " | ") << a;
+
+    if (!as.comment.empty ())
+      o << "; " << as.comment;
 
     return o;
   }
@@ -726,7 +748,7 @@ namespace bpkg
             }
 
             dependency d {move (nm),
-                          dependency_condition {operation, move (v)}};
+                          dependency_constraint {operation, move (v)}};
             da.push_back (move (d));
           }
         }
-- 
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