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| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2012-01-04T21·24+0000 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2012-01-04T21·24+0000 |
| commit | 35f2a6ba82419d48ed8ebce7b8c3e74e65ac74f2 (patch) | |
| tree | eae7ae96104e0d68de31efa9a31a9d75b8c05129 /src/libexpr/nixexpr.hh | |
| parent | adaf64a99b0a882249e35768c3f4fe3de104cbb2 (diff) | |
* Don't use dynamic_cast, it's very slow. "nix-instantiate
/etc/nixos/nixos -A system" spent about 10% of its time in dynamic_cast.
Diffstat (limited to 'src/libexpr/nixexpr.hh')
| -rw-r--r-- | src/libexpr/nixexpr.hh | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libexpr/nixexpr.hh b/src/libexpr/nixexpr.hh index 166289b29851..1c5cc07afe18 100644 --- a/src/libexpr/nixexpr.hh +++ b/src/libexpr/nixexpr.hh @@ -53,6 +53,7 @@ struct Expr virtual void show(std::ostream & str); virtual void bindVars(const StaticEnv & env); virtual void eval(EvalState & state, Env & env, Value & v); + virtual Value * maybeThunk(EvalState & state, Env & env); }; std::ostream & operator << (std::ostream & str, Expr & e); @@ -117,6 +118,7 @@ struct ExprVar : Expr VarRef info; ExprVar(const Symbol & name) : info(name) { }; COMMON_METHODS + Value * maybeThunk(EvalState & state, Env & env); }; struct ExprSelect : Expr |