diff options
Diffstat (limited to 'src/libexpr/primops.cc')
| -rw-r--r-- | src/libexpr/primops.cc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 8a513c521..5dfe90a8f 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -467,6 +467,9 @@ static Expr primToString(EvalState & state, const ATermVector & args) } +/* Convert the argument (which can be any Nix expression) to an XML + representation returned in a string. Not all Nix expressions can + be sensibly or completely represented (e.g., functions). */ static Expr primToXML(EvalState & state, const ATermVector & args) { ostringstream out; @@ -475,6 +478,16 @@ static Expr primToXML(EvalState & state, const ATermVector & args) } +/* Store a string in the Nix store as a source file that can be used + as an input by derivations. */ +static Expr primToFile(EvalState & state, const ATermVector & args) +{ + string s = evalString(state, args[0]); + Path storePath = addTextToStore("", s, PathSet()); + return makePath(toATerm(storePath)); +} + + /* Boolean constructors. */ static Expr primTrue(EvalState & state, const ATermVector & args) { @@ -724,6 +737,7 @@ void EvalState::addPrimOps() addPrimOp("dirOf", 1, primDirOf); addPrimOp("toString", 1, primToString); addPrimOp("__toXML", 1, primToXML); + addPrimOp("__toFile", 1, primToFile); addPrimOp("isNull", 1, primIsNull); addPrimOp("dependencyClosure", 1, primDependencyClosure); addPrimOp("abort", 1, primAbort); |