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Try removing the exception

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This commit is contained in:
regnat 2021-06-02 17:01:37 +02:00
parent 2021b1d8d1
commit 4ca1a0b864
1 changed files with 25 additions and 30 deletions
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55
src/libexpr/eval.cc
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@ -1153,44 +1153,39 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
for (auto & i : attrPath)
selector.push_back(getName(i, state, env));
Pos * pos2 = 0;
Value * vAttrs = &vTmp;
try {
Pos * pos2 = 0;
Value * vAttrs = &vTmp;
try {
for (auto & name : selector) {
nrLookups++;
Bindings::iterator j;
state.forceValue(*vAttrs, pos);
if (vAttrs->type() != nAttrs ||
(j = vAttrs->attrs->find(name)) == vAttrs->attrs->end()) {
throw MissingField("attribute '%s' missing", name);
for (auto & name : selector) {
nrLookups++;
Bindings::iterator j;
state.forceValue(*vAttrs, pos);
if (vAttrs->type() != nAttrs ||
(j = vAttrs->attrs->find(name)) == vAttrs->attrs->end()) {
if (def) {
def->eval(state, env, v);
return;
}
vAttrs = j->value;
pos2 = j->pos;
if (state.countCalls && pos2) state.attrSelects[*pos2]++;
throwEvalError(pos, "attribute '%s' missing", name);
}
state.forceValue(*vAttrs, ( pos2 != NULL ? *pos2 : pos ) );
} catch (Error & e) {
if (pos2 && pos2->file != state.sDerivationNix) {
vector<string> strSelector;
addErrorTrace(e, *pos2, "while evaluating the attribute '%1%'", concatStringsSep(".", selector));
}
throw;
vAttrs = j->value;
pos2 = j->pos;
if (state.countCalls && pos2) state.attrSelects[*pos2]++;
}
v = *vAttrs;
} catch (MissingField & field) {
if (def) {
def->eval(state, env, v);
return;
} else {
throwEvalError(pos, field.what());
state.forceValue(*vAttrs, ( pos2 != NULL ? *pos2 : pos ) );
} catch (Error & e) {
if (pos2 && pos2->file != state.sDerivationNix) {
vector<string> strSelector;
addErrorTrace(e, *pos2, "while evaluating the attribute '%1%'", concatStringsSep(".", selector));
}
throw;
}
v = *vAttrs;
}