From 3d94be61ea562dea2098b6570f711386179913ef Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Wed, 31 Mar 2010 15:38:03 +0000
Subject: * Implemented derivations.

---
 src/libexpr/eval.hh | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'src/libexpr/eval.hh')

diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index 198d936b9738..eba97dd73756 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -109,7 +109,6 @@ void mkString(Value & v, const string & s, const PathSet & context = PathSet());
 void mkPath(Value & v, const char * s);
 
 
-typedef std::map<Path, PathSet> DrvRoots;
 typedef std::map<Path, Hash> DrvHashes;
 
 /* Cache for calls to addToStore(); maps source paths to the store
@@ -124,8 +123,10 @@ std::ostream & operator << (std::ostream & str, Value & v);
 
 class EvalState 
 {
-    DrvRoots drvRoots;
+public:
     DrvHashes drvHashes; /* normalised derivation hashes */
+
+private:
     SrcToStore srcToStore; 
 
     unsigned long nrValues;
@@ -164,9 +165,11 @@ public:
 
     /* Force `v', and then verify that it has the expected type. */
     int forceInt(Value & v);
+    bool forceBool(Value & v);
     void forceAttrs(Value & v);
     void forceList(Value & v);
     void forceFunction(Value & v); // either lambda or primop
+    string forceString(Value & v);
     string forceStringNoCtx(Value & v);
 
     /* String coercion.  Converts strings, paths and derivations to a
@@ -209,6 +212,8 @@ public:
     void mkList(Value & v, unsigned int length);
     void mkAttrs(Value & v);
 
+    void cloneAttrs(Value & src, Value & dst);
+
     /* Print statistics. */
     void printStats();
 };
-- 
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