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* Builtin function `add' to add integers.

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* Put common test functions in tests/lang/lib.nix.
This commit is contained in:
Eelco Dolstra 2006-09-22 15:29:21 +00:00
parent d315210612
commit 2ab4bc44c7
11 changed files with 68 additions and 26 deletions
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10
src/libexpr/eval.cc
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@ -176,6 +176,16 @@ Path evalPath(EvalState & state, Expr e)
}
int evalInt(EvalState & state, Expr e)
{
e = evalExpr(state, e);
int i;
if (!matchInt(e, i))
throw TypeError(format("value is %1% while an integer was expected") % showType(e));
return i;
}
bool evalBool(EvalState & state, Expr e)
{
e = evalExpr(state, e);