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Merge pull request #1828 from zimbatm/isPath

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Add isPath primop
This commit is contained in:
Eelco Dolstra 2019-03-25 19:58:11 +01:00 • committed by GitHub
commit 5c05c238e6
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3 changed files with 17 additions and 0 deletions
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7
src/libexpr/primops.cc
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@ -315,6 +315,12 @@ static void prim_isBool(EvalState & state, const Pos & pos, Value * * args, Valu
mkBool(v, args[0]->type == tBool);
}
/* Determine whether the argument is a path. */
static void prim_isPath(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
state.forceValue(*args[0]);
mkBool(v, args[0]->type == tPath);
}
struct CompareValues
{
@ -2169,6 +2175,7 @@ void EvalState::createBaseEnv()
addPrimOp("__isInt", 1, prim_isInt);
addPrimOp("__isFloat", 1, prim_isFloat);
addPrimOp("__isBool", 1, prim_isBool);
addPrimOp("__isPath", 1, prim_isPath);
addPrimOp("__genericClosure", 1, prim_genericClosure);
addPrimOp("abort", 1, prim_abort);
addPrimOp("__addErrorContext", 2, prim_addErrorContext);