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authorEelco Dolstra <eelco.dolstra@logicblox.com>2016-02-04T13·28+0100
committerEelco Dolstra <eelco.dolstra@logicblox.com>2016-02-04T13·28+0100
commitc10c61449f954702ae6d8092120321744acd82ff (patch)
tree40c161c42301acdfbfd7786638293951c5baf54d /src/libexpr/eval.cc
parent4f7824c58ee0420c5679be6f0a9591f59edf410f (diff)
Eliminate the "store" global variable
Also, move a few free-standing functions into StoreAPI and Derivation.

Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
Diffstat (limited to 'src/libexpr/eval.cc')
-rw-r--r--src/libexpr/eval.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index 3b21c078fd54..702b12ee48ff 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -244,7 +244,7 @@ static Strings parseNixPath(const string & in)
 }
 
 
-EvalState::EvalState(const Strings & _searchPath)
+EvalState::EvalState(const Strings & _searchPath, ref<StoreAPI> store)
     : sWith(symbols.create("<with>"))
     , sOutPath(symbols.create("outPath"))
     , sDrvPath(symbols.create("drvPath"))
@@ -262,6 +262,7 @@ EvalState::EvalState(const Strings & _searchPath)
     , sColumn(symbols.create("column"))
     , sFunctor(symbols.create("__functor"))
     , sToString(symbols.create("__toString"))
+    , store(store)
     , baseEnv(allocEnv(128))
     , staticBaseEnv(false, 0)
 {