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Merge pull request #5428 from kreisys/add-pos-to-json-type-error

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toJSON: report error position for fancier output
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Domen Kožar 2021-11-15 07:57:46 -06:00 committed by GitHub
commit 164179983e
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6 changed files with 20 additions and 18 deletions
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4
src/libexpr/primops.cc
View file

@ -1011,7 +1011,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
if (i->name == state.sStructuredAttrs) continue;
auto placeholder(jsonObject->placeholder(key));
printValueAsJSON(state, true, *i->value, placeholder, context);
printValueAsJSON(state, true, *i->value, pos, placeholder, context);
if (i->name == state.sBuilder)
drv.builder = state.forceString(*i->value, context, posDrvName);
@ -1690,7 +1690,7 @@ static void prim_toJSON(EvalState & state, const Pos & pos, Value * * args, Valu
{
std::ostringstream out;
PathSet context;
printValueAsJSON(state, true, *args[0], out, context);
printValueAsJSON(state, true, *args[0], pos, out, context);
mkString(v, out.str(), context);
}

24
src/libexpr/value-to-json.cc
View file

@ -10,11 +10,11 @@
namespace nix {
void printValueAsJSON(EvalState & state, bool strict,
Value & v, JSONPlaceholder & out, PathSet & context)
Value & v, const Pos & pos, JSONPlaceholder & out, PathSet & context)
{
checkInterrupt();
if (strict) state.forceValue(v);
if (strict) state.forceValue(v, pos);
switch (v.type()) {
@ -40,7 +40,7 @@ void printValueAsJSON(EvalState & state, bool strict,
break;
case nAttrs: {
auto maybeString = state.tryAttrsToString(noPos, v, context, false, false);
auto maybeString = state.tryAttrsToString(pos, v, context, false, false);
if (maybeString) {
out.write(*maybeString);
break;
@ -54,10 +54,10 @@ void printValueAsJSON(EvalState & state, bool strict,
for (auto & j : names) {
Attr & a(*v.attrs->find(state.symbols.create(j)));
auto placeholder(obj.placeholder(j));
printValueAsJSON(state, strict, *a.value, placeholder, context);
printValueAsJSON(state, strict, *a.value, *a.pos, placeholder, context);
}
} else
printValueAsJSON(state, strict, *i->value, out, context);
printValueAsJSON(state, strict, *i->value, *i->pos, out, context);
break;
}
@ -65,7 +65,7 @@ void printValueAsJSON(EvalState & state, bool strict,
auto list(out.list());
for (unsigned int n = 0; n < v.listSize(); ++n) {
auto placeholder(list.placeholder());
printValueAsJSON(state, strict, *v.listElems()[n], placeholder, context);
printValueAsJSON(state, strict, *v.listElems()[n], pos, placeholder, context);
}
break;
}
@ -79,18 +79,20 @@ void printValueAsJSON(EvalState & state, bool strict,
break;
case nThunk:
throw TypeError("cannot convert %1% to JSON", showType(v));
case nFunction:
throw TypeError("cannot convert %1% to JSON", showType(v));
auto e = TypeError({
.msg = hintfmt("cannot convert %1% to JSON", showType(v)),
.errPos = v.determinePos(pos)
});
throw e.addTrace(pos, hintfmt("message for the trace"));
}
}
void printValueAsJSON(EvalState & state, bool strict,
Value & v, std::ostream & str, PathSet & context)
Value & v, const Pos & pos, std::ostream & str, PathSet & context)
{
JSONPlaceholder out(str);
printValueAsJSON(state, strict, v, out, context);
printValueAsJSON(state, strict, v, pos, out, context);
}
void ExternalValueBase::printValueAsJSON(EvalState & state, bool strict,

4
src/libexpr/value-to-json.hh
View file

@ -11,9 +11,9 @@ namespace nix {
class JSONPlaceholder;
void printValueAsJSON(EvalState & state, bool strict,
Value & v, JSONPlaceholder & out, PathSet & context);
Value & v, const Pos & pos, JSONPlaceholder & out, PathSet & context);
void printValueAsJSON(EvalState & state, bool strict,
Value & v, std::ostream & str, PathSet & context);
Value & v, const Pos & pos, std::ostream & str, PathSet & context);
}

2
src/nix-env/nix-env.cc
View file

@ -879,7 +879,7 @@ static void queryJSON(Globals & globals, vector<DrvInfo> & elems)
placeholder.write(nullptr);
} else {
PathSet context;
printValueAsJSON(*globals.state, true, *v, placeholder, context);
printValueAsJSON(*globals.state, true, *v, noPos, placeholder, context);
}
}
}

2
src/nix-instantiate/nix-instantiate.cc
View file

@ -52,7 +52,7 @@ void processExpr(EvalState & state, const Strings & attrPaths,
if (output == okXML)
printValueAsXML(state, strict, location, vRes, std::cout, context, noPos);
else if (output == okJSON)
printValueAsJSON(state, strict, vRes, std::cout, context);
printValueAsJSON(state, strict, vRes, v.determinePos(noPos), std::cout, context);
else {
if (strict) state.forceValueDeep(vRes);
std::cout << vRes << std::endl;

2
src/nix/eval.cc
View file

@ -112,7 +112,7 @@ struct CmdEval : MixJSON, InstallableCommand
else if (json) {
JSONPlaceholder jsonOut(std::cout);
printValueAsJSON(*state, true, *v, jsonOut, context);
printValueAsJSON(*state, true, *v, pos, jsonOut, context);
}
else {