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Merge remote-tracking branch 'origin/master' into source-path

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This commit is contained in:
Eelco Dolstra 2023-04-24 13:20:36 +02:00
commit 01232358ff
101 changed files with 1785 additions and 834 deletions
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2
src/libexpr/attr-path.cc
View file

@ -118,7 +118,7 @@ std::pair<SourcePath, uint32_t> findPackageFilename(EvalState & state, Value & v
// FIXME: is it possible to extract the Pos object instead of doing this
// toString + parsing?
PathSet context;
NixStringContext context;
auto path = state.coerceToPath(noPos, *v2, context, "while evaluating the 'meta.position' attribute of a derivation");
auto fn = path.path.abs();

12
src/libexpr/eval-cache.cc
View file

@ -47,7 +47,7 @@ struct AttrDb
{
auto state(_state->lock());
Path cacheDir = getCacheDir() + "/nix/eval-cache-v4";
Path cacheDir = getCacheDir() + "/nix/eval-cache-v5";
createDirs(cacheDir);
Path dbPath = cacheDir + "/" + fingerprint.to_string(Base16, false) + ".sqlite";
@ -300,7 +300,7 @@ struct AttrDb
NixStringContext context;
if (!queryAttribute.isNull(3))
for (auto & s : tokenizeString<std::vector<std::string>>(queryAttribute.getStr(3), ";"))
context.push_back(NixStringContextElem::parse(cfg, s));
context.insert(NixStringContextElem::parse(s));
return {{rowId, string_t{queryAttribute.getStr(2), context}}};
}
case AttrType::Bool:
@ -621,9 +621,11 @@ string_t AttrCursor::getStringWithContext()
auto & v = forceValue();
if (v.type() == nString)
return {v.string.s, v.getContext(*root->state.store)};
else if (v.type() == nPath)
if (v.type() == nString) {
NixStringContext context;
copyContext(v, context);
return {v.string.s, std::move(context)};
} else if (v.type() == nPath)
return {v.path().to_string(), {}};
else
root->state.error("'%s' is not a string but %s", getAttrPathStr()).debugThrow<TypeError>();

58
src/libexpr/eval.cc
View file

@ -610,8 +610,7 @@ void EvalState::allowAndSetStorePathString(const StorePath & storePath, Value &
{
allowPath(storePath);
auto path = store->printStorePath(storePath);
v.mkString(path, PathSet({path}));
mkStorePathString(storePath, v);
}
SourcePath EvalState::checkSourcePath(const SourcePath & path_)
@ -693,7 +692,7 @@ void EvalState::checkURI(const std::string & uri)
}
Path EvalState::toRealPath(const Path & path, const PathSet & context)
Path EvalState::toRealPath(const Path & path, const NixStringContext & context)
{
// FIXME: check whether 'path' is in 'context'.
return
@ -945,25 +944,25 @@ void Value::mkString(std::string_view s)
}
static void copyContextToValue(Value & v, const PathSet & context)
static void copyContextToValue(Value & v, const NixStringContext & context)
{
if (!context.empty()) {
size_t n = 0;
v.string.context = (const char * *)
allocBytes((context.size() + 1) * sizeof(char *));
for (auto & i : context)
v.string.context[n++] = dupString(i.c_str());
v.string.context[n++] = dupString(i.to_string().c_str());
v.string.context[n] = 0;
}
}
void Value::mkString(std::string_view s, const PathSet & context)
void Value::mkString(std::string_view s, const NixStringContext & context)
{
mkString(s);
copyContextToValue(*this, context);
}
void Value::mkStringMove(const char * s, const PathSet & context)
void Value::mkStringMove(const char * s, const NixStringContext & context)
{
mkString(s);
copyContextToValue(*this, context);
@ -1039,6 +1038,16 @@ void EvalState::mkPos(Value & v, PosIdx p)
}
void EvalState::mkStorePathString(const StorePath & p, Value & v)
{
v.mkString(
store->printStorePath(p),
NixStringContext {
NixStringContextElem::Opaque { .path = p },
});
}
/* Create a thunk for the delayed computation of the given expression
in the given environment. But if the expression is a variable,
then look it up right away. This significantly reduces the number
@ -1901,7 +1910,7 @@ void EvalState::concatLists(Value & v, size_t nrLists, Value * * lists, const Po
void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
{
PathSet context;
NixStringContext context;
std::vector<BackedStringView> s;
size_t sSize = 0;
NixInt n = 0;
@ -2110,26 +2119,15 @@ std::string_view EvalState::forceString(Value & v, const PosIdx pos, std::string
}
void copyContext(const Value & v, PathSet & context)
void copyContext(const Value & v, NixStringContext & context)
{
if (v.string.context)
for (const char * * p = v.string.context; *p; ++p)
context.insert(*p);
context.insert(NixStringContextElem::parse(*p));
}
NixStringContext Value::getContext(const Store & store)
{
NixStringContext res;
assert(internalType == tString);
if (string.context)
for (const char * * p = string.context; *p; ++p)
res.push_back(NixStringContextElem::parse(store, *p));
return res;
}
std::string_view EvalState::forceString(Value & v, PathSet & context, const PosIdx pos, std::string_view errorCtx)
std::string_view EvalState::forceString(Value & v, NixStringContext & context, const PosIdx pos, std::string_view errorCtx)
{
auto s = forceString(v, pos, errorCtx);
copyContext(v, context);
@ -2159,7 +2157,7 @@ bool EvalState::isDerivation(Value & v)
std::optional<std::string> EvalState::tryAttrsToString(const PosIdx pos, Value & v,
PathSet & context, bool coerceMore, bool copyToStore)
NixStringContext & context, bool coerceMore, bool copyToStore)
{
auto i = v.attrs->find(sToString);
if (i != v.attrs->end()) {
@ -2176,7 +2174,7 @@ std::optional<std::string> EvalState::tryAttrsToString(const PosIdx pos, Value &
BackedStringView EvalState::coerceToString(
const PosIdx pos,
Value & v,
PathSet & context,
NixStringContext & context,
std::string_view errorCtx,
bool coerceMore,
bool copyToStore,
@ -2258,7 +2256,7 @@ BackedStringView EvalState::coerceToString(
}
StorePath EvalState::copyPathToStore(PathSet & context, const SourcePath & path)
StorePath EvalState::copyPathToStore(NixStringContext & context, const SourcePath & path)
{
if (nix::isDerivation(path.path.abs()))
error("file names are not allowed to end in '%1%'", drvExtension).debugThrow<EvalError>();
@ -2275,12 +2273,14 @@ StorePath EvalState::copyPathToStore(PathSet & context, const SourcePath & path)
return dstPath;
}();
context.insert(store->printStorePath(dstPath));
context.insert(NixStringContextElem::Opaque {
.path = dstPath
});
return dstPath;
}
SourcePath EvalState::coerceToPath(const PosIdx pos, Value & v, PathSet & context, std::string_view errorCtx)
SourcePath EvalState::coerceToPath(const PosIdx pos, Value & v, NixStringContext & context, std::string_view errorCtx)
{
auto path = coerceToString(pos, v, context, errorCtx, false, false, true).toOwned();
if (path == "" || path[0] != '/')
@ -2289,7 +2289,7 @@ SourcePath EvalState::coerceToPath(const PosIdx pos, Value & v, PathSet & contex
}
StorePath EvalState::coerceToStorePath(const PosIdx pos, Value & v, PathSet & context, std::string_view errorCtx)
StorePath EvalState::coerceToStorePath(const PosIdx pos, Value & v, NixStringContext & context, std::string_view errorCtx)
{
auto path = coerceToString(pos, v, context, errorCtx, false, false, true).toOwned();
if (auto storePath = store->maybeParseStorePath(path))
@ -2496,7 +2496,7 @@ void EvalState::printStats()
}
std::string ExternalValueBase::coerceToString(const Pos & pos, PathSet & context, bool copyMore, bool copyToStore) const
std::string ExternalValueBase::coerceToString(const Pos & pos, NixStringContext & context, bool copyMore, bool copyToStore) const
{
throw TypeError({
.msg = hintfmt("cannot coerce %1% to a string", showType())

24
src/libexpr/eval.hh
View file

@ -57,7 +57,7 @@ void printEnvBindings(const SymbolTable & st, const StaticEnv & se, const Env &
std::unique_ptr<ValMap> mapStaticEnvBindings(const SymbolTable & st, const StaticEnv & se, const Env & env);
void copyContext(const Value & v, PathSet & context);
void copyContext(const Value & v, NixStringContext & context);
std::string printValue(const EvalState & state, const Value & v);
@ -330,7 +330,7 @@ public:
* intended to distinguish between import-from-derivation and
* sources stored in the actual /nix/store.
*/
Path toRealPath(const Path & path, const PathSet & context);
Path toRealPath(const Path & path, const NixStringContext & context);
/**
* Parse a Nix expression from the specified file.
@ -426,7 +426,7 @@ public:
*/
void forceFunction(Value & v, const PosIdx pos, std::string_view errorCtx);
std::string_view forceString(Value & v, const PosIdx pos, std::string_view errorCtx);
std::string_view forceString(Value & v, PathSet & context, const PosIdx pos, std::string_view errorCtx);
std::string_view forceString(Value & v, NixStringContext & context, const PosIdx pos, std::string_view errorCtx);
std::string_view forceStringNoCtx(Value & v, const PosIdx pos, std::string_view errorCtx);
[[gnu::noinline]]
@ -442,7 +442,7 @@ public:
bool isDerivation(Value & v);
std::optional<std::string> tryAttrsToString(const PosIdx pos, Value & v,
PathSet & context, bool coerceMore = false, bool copyToStore = true);
NixStringContext & context, bool coerceMore = false, bool copyToStore = true);
/**
* String coercion.
@ -452,12 +452,12 @@ public:
* booleans and lists to a string. If `copyToStore` is set,
* referenced paths are copied to the Nix store as a side effect.
*/
BackedStringView coerceToString(const PosIdx pos, Value & v, PathSet & context,
BackedStringView coerceToString(const PosIdx pos, Value & v, NixStringContext & context,
std::string_view errorCtx,
bool coerceMore = false, bool copyToStore = true,
bool canonicalizePath = true);
StorePath copyPathToStore(PathSet & context, const SourcePath & path);
StorePath copyPathToStore(NixStringContext & context, const SourcePath & path);
/**
* Path coercion.
@ -466,12 +466,12 @@ public:
* path. The result is guaranteed to be a canonicalised, absolute
* path. Nothing is copied to the store.
*/
SourcePath coerceToPath(const PosIdx pos, Value & v, PathSet & context, std::string_view errorCtx);
SourcePath coerceToPath(const PosIdx pos, Value & v, NixStringContext & context, std::string_view errorCtx);
/**
* Like coerceToPath, but the result must be a store path.
*/
StorePath coerceToStorePath(const PosIdx pos, Value & v, PathSet & context, std::string_view errorCtx);
StorePath coerceToStorePath(const PosIdx pos, Value & v, NixStringContext & context, std::string_view errorCtx);
public:
@ -576,6 +576,12 @@ public:
void mkThunk_(Value & v, Expr * expr);
void mkPos(Value & v, PosIdx pos);
/* Create a string representing a store path.
The string is the printed store path with a context containing a single
`Opaque` element of that store path. */
void mkStorePathString(const StorePath & storePath, Value & v);
void concatLists(Value & v, size_t nrLists, Value * * lists, const PosIdx pos, std::string_view errorCtx);
/**
@ -587,7 +593,7 @@ public:
* Realise the given context, and return a mapping from the placeholders
* used to construct the associated value to their final store path
*/
[[nodiscard]] StringMap realiseContext(const PathSet & context);
[[nodiscard]] StringMap realiseContext(const NixStringContext & context);
private:

2
src/libexpr/flake/config.cc
View file

@ -31,7 +31,7 @@ static void writeTrustedList(const TrustedList & trustedList)
void ConfigFile::apply()
{
std::set<std::string> whitelist{"bash-prompt", "bash-prompt-prefix", "bash-prompt-suffix", "flake-registry"};
std::set<std::string> whitelist{"bash-prompt", "bash-prompt-prefix", "bash-prompt-suffix", "flake-registry", "commit-lockfile-summary"};
for (auto & [name, value] : settings) {

2
src/libexpr/flake/flake.cc
View file

@ -265,7 +265,7 @@ static Flake getFlake(
state.symbols[setting.name],
std::string(state.forceStringNoCtx(*setting.value, setting.pos, "")));
else if (setting.value->type() == nPath) {
PathSet emptyContext = {};
NixStringContext emptyContext = {};
flake.config.settings.emplace(
state.symbols[setting.name],
state.coerceToString(setting.pos, *setting.value, emptyContext, "", false, true, true) .toOwned());

6
src/libexpr/get-drvs.cc
View file

@ -71,7 +71,7 @@ std::optional<StorePath> DrvInfo::queryDrvPath() const
{
if (!drvPath && attrs) {
Bindings::iterator i = attrs->find(state->sDrvPath);
PathSet context;
NixStringContext context;
if (i == attrs->end())
drvPath = {std::nullopt};
else
@ -93,7 +93,7 @@ StorePath DrvInfo::queryOutPath() const
{
if (!outPath && attrs) {
Bindings::iterator i = attrs->find(state->sOutPath);
PathSet context;
NixStringContext context;
if (i != attrs->end())
outPath = state->coerceToStorePath(i->pos, *i->value, context, "while evaluating the output path of a derivation");
}
@ -124,7 +124,7 @@ DrvInfo::Outputs DrvInfo::queryOutputs(bool withPaths, bool onlyOutputsToInstall
/* And evaluate its ‘outPath’ attribute. */
Bindings::iterator outPath = out->value->attrs->find(state->sOutPath);
if (outPath == out->value->attrs->end()) continue; // FIXME: throw error?
PathSet context;
NixStringContext context;
outputs.emplace(output, state->coerceToStorePath(outPath->pos, *outPath->value, context, "while evaluating an output path of a derivation"));
} else
outputs.emplace(output, std::nullopt);

118
src/libexpr/primops.cc
View file

@ -38,17 +38,16 @@ namespace nix {
InvalidPathError::InvalidPathError(const Path & path) :
EvalError("path '%s' is not valid", path), path(path) {}
StringMap EvalState::realiseContext(const PathSet & context)
StringMap EvalState::realiseContext(const NixStringContext & context)
{
std::vector<DerivedPath::Built> drvs;
StringMap res;
for (auto & c_ : context) {
for (auto & c : context) {
auto ensureValid = [&](const StorePath & p) {
if (!store->isValidPath(p))
debugThrowLastTrace(InvalidPathError(store->printStorePath(p)));
};
auto c = NixStringContextElem::parse(*store, c_);
std::visit(overloaded {
[&](const NixStringContextElem::Built & b) {
drvs.push_back(DerivedPath::Built {
@ -112,7 +111,7 @@ struct RealisePathFlags {
static SourcePath realisePath(EvalState & state, const PosIdx pos, Value & v, const RealisePathFlags flags = {})
{
PathSet context;
NixStringContext context;
auto path = state.coerceToPath(noPos, v, context, "while realising the context of a path");
@ -158,7 +157,12 @@ static void mkOutputString(
/* FIXME: we need to depend on the basic derivation, not
derivation */
: downstreamPlaceholder(*state.store, drvPath, o.first),
{"!" + o.first + "!" + state.store->printStorePath(drvPath)});
NixStringContext {
NixStringContextElem::Built {
.drvPath = drvPath,
.output = o.first,
}
});
}
/* Load and evaluate an expression from path specified by the
@ -178,17 +182,18 @@ static void import(EvalState & state, const PosIdx pos, Value & vPath, Value * v
return storePath;
};
if (auto optStorePath = isValidDerivationInStore()) {
auto storePath = *optStorePath;
Derivation drv = state.store->readDerivation(storePath);
if (auto storePath = isValidDerivationInStore()) {
Derivation drv = state.store->readDerivation(*storePath);
auto attrs = state.buildBindings(3 + drv.outputs.size());
attrs.alloc(state.sDrvPath).mkString(path2, {"=" + path2});
attrs.alloc(state.sDrvPath).mkString(path2, {
NixStringContextElem::DrvDeep { .drvPath = *storePath },
});
attrs.alloc(state.sName).mkString(drv.env["name"]);
auto & outputsVal = attrs.alloc(state.sOutputs);
state.mkList(outputsVal, drv.outputs.size());
for (const auto & [i, o] : enumerate(drv.outputs)) {
mkOutputString(state, attrs, storePath, drv, o);
mkOutputString(state, attrs, *storePath, drv, o);
(outputsVal.listElems()[i] = state.allocValue())->mkString(o.first);
}
@ -359,7 +364,7 @@ void prim_exec(EvalState & state, const PosIdx pos, Value * * args, Value & v)
auto count = args[0]->listSize();
if (count == 0)
state.error("at least one argument to 'exec' required").atPos(pos).debugThrow<EvalError>();
PathSet context;
NixStringContext context;
auto program = state.coerceToString(pos, *elems[0], context,
"while evaluating the first element of the argument passed to builtins.exec",
false, false).toOwned();
@ -769,7 +774,7 @@ static RegisterPrimOp primop_abort({
)",
.fun = [](EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto s = state.coerceToString(pos, *args[0], context,
"while evaluating the error message passed to builtins.abort").toOwned();
state.debugThrowLastTrace(Abort("evaluation aborted with the following error message: '%1%'", s));
@ -788,7 +793,7 @@ static RegisterPrimOp primop_throw({
)",
.fun = [](EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto s = state.coerceToString(pos, *args[0], context,
"while evaluating the error message passed to builtin.throw").toOwned();
state.debugThrowLastTrace(ThrownError(s));
@ -801,7 +806,7 @@ static void prim_addErrorContext(EvalState & state, const PosIdx pos, Value * *
state.forceValue(*args[1], pos);
v = *args[1];
} catch (Error & e) {
PathSet context;
NixStringContext context;
auto message = state.coerceToString(pos, *args[0], context,
"while evaluating the error message passed to builtins.addErrorContext",
false, false).toOwned();
@ -1087,7 +1092,7 @@ drvName, Bindings * attrs, Value & v)
Derivation drv;
drv.name = drvName;
PathSet context;
NixStringContext context;
bool contentAddressed = false;
bool isImpure = false;
@ -1233,8 +1238,7 @@ drvName, Bindings * attrs, Value & v)
/* Everything in the context of the strings in the derivation
attributes should be added as dependencies of the resulting
derivation. */
for (auto & c_ : context) {
auto c = NixStringContextElem::parse(*state.store, c_);
for (auto & c : context) {
std::visit(overloaded {
/* Since this allows the builder to gain access to every
path in the dependency graph of the derivation (including
@ -1294,7 +1298,13 @@ drvName, Bindings * attrs, Value & v)
auto h = newHashAllowEmpty(*outputHash, parseHashTypeOpt(outputHashAlgo));
auto method = ingestionMethod.value_or(FileIngestionMethod::Flat);
auto outPath = state.store->makeFixedOutputPath(method, h, drvName);
auto outPath = state.store->makeFixedOutputPath(drvName, FixedOutputInfo {
.hash = {
.method = method,
.hash = h,
},
.references = {},
});
drv.env["out"] = state.store->printStorePath(outPath);
drv.outputs.insert_or_assign("out",
DerivationOutput::CAFixed {
@ -1387,7 +1397,9 @@ drvName, Bindings * attrs, Value & v)
}
auto result = state.buildBindings(1 + drv.outputs.size());
result.alloc(state.sDrvPath).mkString(drvPathS, {"=" + drvPathS});
result.alloc(state.sDrvPath).mkString(drvPathS, {
NixStringContextElem::DrvDeep { .drvPath = drvPath },
});
for (auto & i : drv.outputs)
mkOutputString(state, result, drvPath, drv, i);
@ -1432,7 +1444,7 @@ static RegisterPrimOp primop_placeholder({
/* Convert the argument to a path. !!! obsolete? */
static void prim_toPath(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto path = state.coerceToPath(pos, *args[0], context, "while evaluating the first argument passed to builtins.toPath");
v.mkString(path.path.abs(), context);
}
@ -1463,7 +1475,7 @@ static void prim_storePath(EvalState & state, const PosIdx pos, Value * * args,
.errPos = state.positions[pos]
}));
PathSet context;
NixStringContext context;
auto path = state.checkSourcePath(state.coerceToPath(pos, *args[0], context, "while evaluating the first argument passed to builtins.storePath")).path;
/* Resolve symlinks in ‘path’, unless ‘path’ itself is a symlink
directly in the store. The latter condition is necessary so
@ -1478,7 +1490,7 @@ static void prim_storePath(EvalState & state, const PosIdx pos, Value * * args,
auto path2 = state.store->toStorePath(path.abs()).first;
if (!settings.readOnlyMode)
state.store->ensurePath(path2);
context.insert(state.store->printStorePath(path2));
context.insert(NixStringContextElem::Opaque { .path = path2 });
v.mkString(path.abs(), context);
}
@ -1534,7 +1546,7 @@ static RegisterPrimOp primop_pathExists({
following the last slash. */
static void prim_baseNameOf(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
v.mkString(baseNameOf(*state.coerceToString(pos, *args[0], context,
"while evaluating the first argument passed to builtins.baseNameOf",
false, false)), context);
@ -1556,12 +1568,12 @@ static RegisterPrimOp primop_baseNameOf({
of the argument. */
static void prim_dirOf(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
state.forceValue(*args[0], pos);
if (args[0]->type() == nPath) {
auto path = args[0]->path();
v.mkPath(path.path.isRoot() ? path : path.parent());
} else {
NixStringContext context;
auto path = state.coerceToString(pos, *args[0], context,
"while evaluating the first argument passed to 'builtins.dirOf'",
false, false);
@ -1599,7 +1611,12 @@ static void prim_readFile(EvalState & state, const PosIdx pos, Value * * args, V
refsSink << s;
refs = refsSink.getResultPaths();
}
auto context = state.store->printStorePathSet(refs);
NixStringContext context;
for (auto && p : std::move(refs)) {
context.insert(NixStringContextElem::Opaque {
.path = std::move((StorePath &&)p),
});
}
v.mkString(s, context);
}
@ -1630,7 +1647,7 @@ static void prim_findFile(EvalState & state, const PosIdx pos, Value * * args, V
i = getAttr(state, state.sPath, v2->attrs, "in an element of the __nixPath");
PathSet context;
NixStringContext context;
auto path = state.coerceToString(pos, *i->value, context,
"while evaluating the `path` attribute of an element of the list passed to builtins.findFile",
false, false).toOwned();
@ -1781,7 +1798,7 @@ static RegisterPrimOp primop_readDir({
static void prim_toXML(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
std::ostringstream out;
PathSet context;
NixStringContext context;
printValueAsXML(state, true, false, *args[0], out, context, pos);
v.mkString(out.str(), context);
}
@ -1889,7 +1906,7 @@ static RegisterPrimOp primop_toXML({
static void prim_toJSON(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
std::ostringstream out;
PathSet context;
NixStringContext context;
printValueAsJSON(state, true, *args[0], pos, out, context);
v.mkString(out.str(), context);
}
@ -1939,22 +1956,23 @@ static RegisterPrimOp primop_fromJSON({
as an input by derivations. */
static void prim_toFile(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
std::string name(state.forceStringNoCtx(*args[0], pos, "while evaluating the first argument passed to builtins.toFile"));
std::string contents(state.forceString(*args[1], context, pos, "while evaluating the second argument passed to builtins.toFile"));
StorePathSet refs;
for (auto path : context) {
if (path.at(0) != '/')
for (auto c : context) {
if (auto p = std::get_if<NixStringContextElem::Opaque>(&c))
refs.insert(p->path);
else
state.debugThrowLastTrace(EvalError({
.msg = hintfmt(
"in 'toFile': the file named '%1%' must not contain a reference "
"to a derivation but contains (%2%)",
name, path),
name, c.to_string()),
.errPos = state.positions[pos]
}));
refs.insert(state.store->parseStorePath(path));
}
auto storePath = settings.readOnlyMode
@ -2055,7 +2073,7 @@ static void addPath(
FileIngestionMethod method,
const std::optional<Hash> expectedHash,
Value & v,
const PathSet & context)
const NixStringContext & context)
{
try {
// FIXME: handle CA derivation outputs (where path needs to
@ -2103,7 +2121,13 @@ static void addPath(
std::optional<StorePath> expectedStorePath;
if (expectedHash)
expectedStorePath = state.store->makeFixedOutputPath(method, *expectedHash, name);
expectedStorePath = state.store->makeFixedOutputPath(name, FixedOutputInfo {
.hash = {
.method = method,
.hash = *expectedHash,
},
.references = {},
});
if (!expectedHash || !state.store->isValidPath(*expectedStorePath)) {
StorePath dstPath = settings.readOnlyMode
@ -2123,7 +2147,7 @@ static void addPath(
static void prim_filterSource(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto path = state.coerceToPath(pos, *args[1], context,
"while evaluating the second argument (the path to filter) passed to builtins.filterSource");
state.forceFunction(*args[0], pos, "while evaluating the first argument passed to builtins.filterSource");
@ -2192,7 +2216,7 @@ static void prim_path(EvalState & state, const PosIdx pos, Value * * args, Value
Value * filterFun = nullptr;
auto method = FileIngestionMethod::Recursive;
std::optional<Hash> expectedHash;
PathSet context;
NixStringContext context;
state.forceAttrs(*args[0], pos, "while evaluating the argument passed to 'builtins.path'");
@ -3528,7 +3552,7 @@ static RegisterPrimOp primop_lessThan({
`"/nix/store/whatever..."'. */
static void prim_toString(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto s = state.coerceToString(pos, *args[0], context,
"while evaluating the first argument passed to builtins.toString",
true, false);
@ -3567,7 +3591,7 @@ static void prim_substring(EvalState & state, const PosIdx pos, Value * * args,
{
int start = state.forceInt(*args[0], pos, "while evaluating the first argument (the start offset) passed to builtins.substring");
int len = state.forceInt(*args[1], pos, "while evaluating the second argument (the substring length) passed to builtins.substring");
PathSet context;
NixStringContext context;
auto s = state.coerceToString(pos, *args[2], context, "while evaluating the third argument (the string) passed to builtins.substring");
if (start < 0)
@ -3601,7 +3625,7 @@ static RegisterPrimOp primop_substring({
static void prim_stringLength(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto s = state.coerceToString(pos, *args[0], context, "while evaluating the argument passed to builtins.stringLength");
v.mkInt(s->size());
}
@ -3627,7 +3651,7 @@ static void prim_hashString(EvalState & state, const PosIdx pos, Value * * args,
.errPos = state.positions[pos]
}));
PathSet context; // discarded
NixStringContext context; // discarded
auto s = state.forceString(*args[1], context, pos, "while evaluating the second argument passed to builtins.hashString");
v.mkString(hashString(*ht, s).to_string(Base16, false));
@ -3673,7 +3697,7 @@ void prim_match(EvalState & state, const PosIdx pos, Value * * args, Value & v)
auto regex = state.regexCache->get(re);
PathSet context;
NixStringContext context;
const auto str = state.forceString(*args[1], context, pos, "while evaluating the second argument passed to builtins.match");
std::cmatch match;
@ -3753,7 +3777,7 @@ void prim_split(EvalState & state, const PosIdx pos, Value * * args, Value & v)
auto regex = state.regexCache->get(re);
PathSet context;
NixStringContext context;
const auto str = state.forceString(*args[1], context, pos, "while evaluating the second argument passed to builtins.split");
auto begin = std::cregex_iterator(str.begin(), str.end(), regex);
@ -3850,7 +3874,7 @@ static RegisterPrimOp primop_split({
static void prim_concatStringsSep(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto sep = state.forceString(*args[0], context, pos, "while evaluating the first argument (the separator string) passed to builtins.concatStringsSep");
state.forceList(*args[1], pos, "while evaluating the second argument (the list of strings to concat) passed to builtins.concatStringsSep");
@ -3890,15 +3914,15 @@ static void prim_replaceStrings(EvalState & state, const PosIdx pos, Value * * a
for (auto elem : args[0]->listItems())
from.emplace_back(state.forceString(*elem, pos, "while evaluating one of the strings to replace passed to builtins.replaceStrings"));
std::vector<std::pair<std::string, PathSet>> to;
std::vector<std::pair<std::string, NixStringContext>> to;
to.reserve(args[1]->listSize());
for (auto elem : args[1]->listItems()) {
PathSet ctx;
NixStringContext ctx;
auto s = state.forceString(*elem, ctx, pos, "while evaluating one of the replacement strings passed to builtins.replaceStrings");
to.emplace_back(s, std::move(ctx));
}
PathSet context;
NixStringContext context;
auto s = state.forceString(*args[2], context, pos, "while evaluating the third argument passed to builtins.replaceStrings");
std::string res;

54
src/libexpr/primops/context.cc
View file

@ -7,7 +7,7 @@ namespace nix {
static void prim_unsafeDiscardStringContext(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto s = state.coerceToString(pos, *args[0], context, "while evaluating the argument passed to builtins.unsafeDiscardStringContext");
v.mkString(*s);
}
@ -17,7 +17,7 @@ static RegisterPrimOp primop_unsafeDiscardStringContext("__unsafeDiscardStringCo
static void prim_hasContext(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
state.forceString(*args[0], context, pos, "while evaluating the argument passed to builtins.hasContext");
v.mkBool(!context.empty());
}
@ -33,17 +33,18 @@ static RegisterPrimOp primop_hasContext("__hasContext", 1, prim_hasContext);
drv.inputDrvs. */
static void prim_unsafeDiscardOutputDependency(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto s = state.coerceToString(pos, *args[0], context, "while evaluating the argument passed to builtins.unsafeDiscardOutputDependency");
PathSet context2;
for (auto && p : context) {
auto c = NixStringContextElem::parse(*state.store, p);
NixStringContext context2;
for (auto && c : context) {
if (auto * ptr = std::get_if<NixStringContextElem::DrvDeep>(&c)) {
context2.emplace(state.store->printStorePath(ptr->drvPath));
context2.emplace(NixStringContextElem::Opaque {
.path = ptr->drvPath
});
} else {
/* Can reuse original item */
context2.emplace(std::move(p));
context2.emplace(std::move(c));
}
}
@ -79,22 +80,21 @@ static void prim_getContext(EvalState & state, const PosIdx pos, Value * * args,
bool allOutputs = false;
Strings outputs;
};
PathSet context;
NixStringContext context;
state.forceString(*args[0], context, pos, "while evaluating the argument passed to builtins.getContext");
auto contextInfos = std::map<StorePath, ContextInfo>();
for (const auto & p : context) {
NixStringContextElem ctx = NixStringContextElem::parse(*state.store, p);
for (auto && i : context) {
std::visit(overloaded {
[&](NixStringContextElem::DrvDeep & d) {
contextInfos[d.drvPath].allOutputs = true;
[&](NixStringContextElem::DrvDeep && d) {
contextInfos[std::move(d.drvPath)].allOutputs = true;
},
[&](NixStringContextElem::Built & b) {
contextInfos[b.drvPath].outputs.emplace_back(std::move(b.output));
[&](NixStringContextElem::Built && b) {
contextInfos[std::move(b.drvPath)].outputs.emplace_back(std::move(b.output));
},
[&](NixStringContextElem::Opaque & o) {
contextInfos[o.path].path = true;
[&](NixStringContextElem::Opaque && o) {
contextInfos[std::move(o.path)].path = true;
},
}, ctx.raw());
}, ((NixStringContextElem &&) i).raw());
}
auto attrs = state.buildBindings(contextInfos.size());
@ -129,7 +129,7 @@ static RegisterPrimOp primop_getContext("__getContext", 1, prim_getContext);
*/
static void prim_appendContext(EvalState & state, const PosIdx pos, Value * * args, Value & v)
{
PathSet context;
NixStringContext context;
auto orig = state.forceString(*args[0], context, noPos, "while evaluating the first argument passed to builtins.appendContext");
state.forceAttrs(*args[1], pos, "while evaluating the second argument passed to builtins.appendContext");
@ -143,13 +143,16 @@ static void prim_appendContext(EvalState & state, const PosIdx pos, Value * * ar
.msg = hintfmt("context key '%s' is not a store path", name),
.errPos = state.positions[i.pos]
});
auto namePath = state.store->parseStorePath(name);
if (!settings.readOnlyMode)
state.store->ensurePath(state.store->parseStorePath(name));
state.store->ensurePath(namePath);
state.forceAttrs(*i.value, i.pos, "while evaluating the value of a string context");
auto iter = i.value->attrs->find(sPath);
if (iter != i.value->attrs->end()) {
if (state.forceBool(*iter->value, iter->pos, "while evaluating the `path` attribute of a string context"))
context.emplace(name);
context.emplace(NixStringContextElem::Opaque {
.path = namePath,
});
}
iter = i.value->attrs->find(sAllOutputs);
@ -161,7 +164,9 @@ static void prim_appendContext(EvalState & state, const PosIdx pos, Value * * ar
.errPos = state.positions[i.pos]
});
}
context.insert(concatStrings("=", name));
context.emplace(NixStringContextElem::DrvDeep {
.drvPath = namePath,
});
}
}
@ -176,7 +181,10 @@ static void prim_appendContext(EvalState & state, const PosIdx pos, Value * * ar
}
for (auto elem : iter->value->listItems()) {
auto outputName = state.forceStringNoCtx(*elem, iter->pos, "while evaluating an output name within a string context");
context.insert(concatStrings("!", outputName, "!", name));
context.emplace(NixStringContextElem::Built {
.drvPath = namePath,
.output = std::string { outputName },
});
}
}
}

7
src/libexpr/primops/fetchClosure.cc
View file

@ -18,7 +18,7 @@ static void prim_fetchClosure(EvalState & state, const PosIdx pos, Value * * arg
const auto & attrName = state.symbols[attr.name];
if (attrName == "fromPath") {
PathSet context;
NixStringContext context;
fromPath = state.coerceToStorePath(attr.pos, *attr.value, context,
"while evaluating the 'fromPath' attribute passed to builtins.fetchClosure");
}
@ -27,7 +27,7 @@ static void prim_fetchClosure(EvalState & state, const PosIdx pos, Value * * arg
state.forceValue(*attr.value, attr.pos);
toCA = true;
if (attr.value->type() != nString || attr.value->string.s != std::string("")) {
PathSet context;
NixStringContext context;
toPath = state.coerceToStorePath(attr.pos, *attr.value, context,
"while evaluating the 'toPath' attribute passed to builtins.fetchClosure");
}
@ -114,8 +114,7 @@ static void prim_fetchClosure(EvalState & state, const PosIdx pos, Value * * arg
});
}
auto toPathS = state.store->printStorePath(*toPath);
v.mkString(toPathS, {toPathS});
state.mkStorePathString(*toPath, v);
}
static RegisterPrimOp primop_fetchClosure({

5
src/libexpr/primops/fetchMercurial.cc
View file

@ -13,7 +13,7 @@ static void prim_fetchMercurial(EvalState & state, const PosIdx pos, Value * * a
std::optional<Hash> rev;
std::optional<std::string> ref;
std::string_view name = "source";
PathSet context;
NixStringContext context;
state.forceValue(*args[0], pos);
@ -73,8 +73,7 @@ static void prim_fetchMercurial(EvalState & state, const PosIdx pos, Value * * a
auto [tree, input2] = input.fetch(state.store);
auto attrs2 = state.buildBindings(8);
auto storePath = state.store->printStorePath(tree.storePath);
attrs2.alloc(state.sOutPath).mkString(storePath, {storePath});
state.mkStorePathString(tree.storePath, attrs2.alloc(state.sOutPath));
if (input2.getRef())
attrs2.alloc("branch").mkString(*input2.getRef());
// Backward compatibility: set 'rev' to

18
src/libexpr/primops/fetchTree.cc
View file

@ -24,9 +24,8 @@ void emitTreeAttrs(
auto attrs = state.buildBindings(8);
auto storePath = state.store->printStorePath(tree.storePath);
attrs.alloc(state.sOutPath).mkString(storePath, {storePath});
state.mkStorePathString(tree.storePath, attrs.alloc(state.sOutPath));
// FIXME: support arbitrary input attributes.
@ -107,7 +106,7 @@ static void fetchTree(
const FetchTreeParams & params = FetchTreeParams{}
) {
fetchers::Input input;
PathSet context;
NixStringContext context;
state.forceValue(*args[0], pos);
@ -243,10 +242,15 @@ static void fetch(EvalState & state, const PosIdx pos, Value * * args, Value & v
// early exit if pinned and already in the store
if (expectedHash && expectedHash->type == htSHA256) {
auto expectedPath =
unpack
? state.store->makeFixedOutputPath(FileIngestionMethod::Recursive, *expectedHash, name, {})
: state.store->makeFixedOutputPath(FileIngestionMethod::Flat, *expectedHash, name, {});
auto expectedPath = state.store->makeFixedOutputPath(
name,
FixedOutputInfo {
.hash = {
.method = unpack ? FileIngestionMethod::Recursive : FileIngestionMethod::Flat,
.hash = *expectedHash,
},
.references = {}
});
if (state.store->isValidPath(expectedPath)) {
state.allowAndSetStorePathString(expectedPath, v);

2
src/libexpr/tests/json.cc
View file

@ -8,7 +8,7 @@ namespace nix {
protected:
std::string getJSONValue(Value& value) {
std::stringstream ss;
PathSet ps;
NixStringContext ps;
printValueAsJSON(state, true, value, noPos, ss, ps);
return ss.str();
}

61
src/libexpr/tests/value/context.cc
View file

@ -8,69 +8,62 @@
namespace nix {
// Testing of trivial expressions
struct NixStringContextElemTest : public LibExprTest {
const Store & store() const {
return *LibExprTest::store;
}
};
TEST_F(NixStringContextElemTest, empty_invalid) {
TEST(NixStringContextElemTest, empty_invalid) {
EXPECT_THROW(
NixStringContextElem::parse(store(), ""),
NixStringContextElem::parse(""),
BadNixStringContextElem);
}
TEST_F(NixStringContextElemTest, single_bang_invalid) {
TEST(NixStringContextElemTest, single_bang_invalid) {
EXPECT_THROW(
NixStringContextElem::parse(store(), "!"),
NixStringContextElem::parse("!"),
BadNixStringContextElem);
}
TEST_F(NixStringContextElemTest, double_bang_invalid) {
TEST(NixStringContextElemTest, double_bang_invalid) {
EXPECT_THROW(
NixStringContextElem::parse(store(), "!!/"),
NixStringContextElem::parse("!!/"),
BadStorePath);
}
TEST_F(NixStringContextElemTest, eq_slash_invalid) {
TEST(NixStringContextElemTest, eq_slash_invalid) {
EXPECT_THROW(
NixStringContextElem::parse(store(), "=/"),
NixStringContextElem::parse("=/"),
BadStorePath);
}
TEST_F(NixStringContextElemTest, slash_invalid) {
TEST(NixStringContextElemTest, slash_invalid) {
EXPECT_THROW(
NixStringContextElem::parse(store(), "/"),
NixStringContextElem::parse("/"),
BadStorePath);
}
TEST_F(NixStringContextElemTest, opaque) {
std::string_view opaque = "/nix/store/g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x";
auto elem = NixStringContextElem::parse(store(), opaque);
TEST(NixStringContextElemTest, opaque) {
std::string_view opaque = "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x";
auto elem = NixStringContextElem::parse(opaque);
auto * p = std::get_if<NixStringContextElem::Opaque>(&elem);
ASSERT_TRUE(p);
ASSERT_EQ(p->path, store().parseStorePath(opaque));
ASSERT_EQ(elem.to_string(store()), opaque);
ASSERT_EQ(p->path, StorePath { opaque });
ASSERT_EQ(elem.to_string(), opaque);
}
TEST_F(NixStringContextElemTest, drvDeep) {
std::string_view drvDeep = "=/nix/store/g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
auto elem = NixStringContextElem::parse(store(), drvDeep);
TEST(NixStringContextElemTest, drvDeep) {
std::string_view drvDeep = "=g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
auto elem = NixStringContextElem::parse(drvDeep);
auto * p = std::get_if<NixStringContextElem::DrvDeep>(&elem);
ASSERT_TRUE(p);
ASSERT_EQ(p->drvPath, store().parseStorePath(drvDeep.substr(1)));
ASSERT_EQ(elem.to_string(store()), drvDeep);
ASSERT_EQ(p->drvPath, StorePath { drvDeep.substr(1) });
ASSERT_EQ(elem.to_string(), drvDeep);
}
TEST_F(NixStringContextElemTest, built) {
std::string_view built = "!foo!/nix/store/g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
auto elem = NixStringContextElem::parse(store(), built);
TEST(NixStringContextElemTest, built) {
std::string_view built = "!foo!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
auto elem = NixStringContextElem::parse(built);
auto * p = std::get_if<NixStringContextElem::Built>(&elem);
ASSERT_TRUE(p);
ASSERT_EQ(p->output, "foo");
ASSERT_EQ(p->drvPath, store().parseStorePath(built.substr(5)));
ASSERT_EQ(elem.to_string(store()), built);
ASSERT_EQ(p->drvPath, StorePath { built.substr(5) });
ASSERT_EQ(elem.to_string(), built);
}
}
@ -116,12 +109,12 @@ Gen<NixStringContextElem> Arbitrary<NixStringContextElem>::arbitrary()
namespace nix {
RC_GTEST_FIXTURE_PROP(
RC_GTEST_PROP(
NixStringContextElemTest,
prop_round_rip,
(const NixStringContextElem & o))
{
RC_ASSERT(o == NixStringContextElem::parse(store(), o.to_string(store())));
RC_ASSERT(o == NixStringContextElem::parse(o.to_string()));
}
}

6
src/libexpr/value-to-json.cc
View file

@ -11,7 +11,7 @@
namespace nix {
using json = nlohmann::json;
json printValueAsJSON(EvalState & state, bool strict,
Value & v, const PosIdx pos, PathSet & context, bool copyToStore)
Value & v, const PosIdx pos, NixStringContext & context, bool copyToStore)
{
checkInterrupt();
@ -95,13 +95,13 @@ json printValueAsJSON(EvalState & state, bool strict,
}
void printValueAsJSON(EvalState & state, bool strict,
Value & v, const PosIdx pos, std::ostream & str, PathSet & context, bool copyToStore)
Value & v, const PosIdx pos, std::ostream & str, NixStringContext & context, bool copyToStore)
{
str << printValueAsJSON(state, strict, v, pos, context, copyToStore);
}
json ExternalValueBase::printValueAsJSON(EvalState & state, bool strict,
PathSet & context, bool copyToStore) const
NixStringContext & context, bool copyToStore) const
{
state.debugThrowLastTrace(TypeError("cannot convert %1% to JSON", showType()));
}

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

@ -11,9 +11,9 @@
namespace nix {
nlohmann::json printValueAsJSON(EvalState & state, bool strict,
Value & v, const PosIdx pos, PathSet & context, bool copyToStore = true);
Value & v, const PosIdx pos, NixStringContext & context, bool copyToStore = true);
void printValueAsJSON(EvalState & state, bool strict,
Value & v, const PosIdx pos, std::ostream & str, PathSet & context, bool copyToStore = true);
Value & v, const PosIdx pos, std::ostream & str, NixStringContext & context, bool copyToStore = true);
}

10
src/libexpr/value-to-xml.cc
View file

@ -18,7 +18,7 @@ static XMLAttrs singletonAttrs(const std::string & name, const std::string & val
static void printValueAsXML(EvalState & state, bool strict, bool location,
Value & v, XMLWriter & doc, PathSet & context, PathSet & drvsSeen,
Value & v, XMLWriter & doc, NixStringContext & context, PathSet & drvsSeen,
const PosIdx pos);
@ -32,7 +32,7 @@ static void posToXML(EvalState & state, XMLAttrs & xmlAttrs, const Pos & pos)
static void showAttrs(EvalState & state, bool strict, bool location,
Bindings & attrs, XMLWriter & doc, PathSet & context, PathSet & drvsSeen)
Bindings & attrs, XMLWriter & doc, NixStringContext & context, PathSet & drvsSeen)
{
StringSet names;
@ -54,7 +54,7 @@ static void showAttrs(EvalState & state, bool strict, bool location,
static void printValueAsXML(EvalState & state, bool strict, bool location,
Value & v, XMLWriter & doc, PathSet & context, PathSet & drvsSeen,
Value & v, XMLWriter & doc, NixStringContext & context, PathSet & drvsSeen,
const PosIdx pos)
{
checkInterrupt();
@ -166,7 +166,7 @@ static void printValueAsXML(EvalState & state, bool strict, bool location,
void ExternalValueBase::printValueAsXML(EvalState & state, bool strict,
bool location, XMLWriter & doc, PathSet & context, PathSet & drvsSeen,
bool location, XMLWriter & doc, NixStringContext & context, PathSet & drvsSeen,
const PosIdx pos) const
{
doc.writeEmptyElement("unevaluated");
@ -174,7 +174,7 @@ void ExternalValueBase::printValueAsXML(EvalState & state, bool strict,
void printValueAsXML(EvalState & state, bool strict, bool location,
Value & v, std::ostream & out, PathSet & context, const PosIdx pos)
Value & v, std::ostream & out, NixStringContext & context, const PosIdx pos)
{
XMLWriter doc(true, out);
XMLOpenElement root(doc, "expr");

2
src/libexpr/value-to-xml.hh
View file

@ -10,6 +10,6 @@
namespace nix {
void printValueAsXML(EvalState & state, bool strict, bool location,
Value & v, std::ostream & out, PathSet & context, const PosIdx pos);
Value & v, std::ostream & out, NixStringContext & context, const PosIdx pos);
}

12
src/libexpr/value.hh
View file

@ -101,7 +101,7 @@ class ExternalValueBase
* Coerce the value to a string. Defaults to uncoercable, i.e. throws an
* error.
*/
virtual std::string coerceToString(const Pos & pos, PathSet & context, bool copyMore, bool copyToStore) const;
virtual std::string coerceToString(const Pos & pos, NixStringContext & context, bool copyMore, bool copyToStore) const;
/**
* Compare to another value of the same type. Defaults to uncomparable,
@ -113,13 +113,13 @@ class ExternalValueBase
* Print the value as JSON. Defaults to unconvertable, i.e. throws an error
*/
virtual nlohmann::json printValueAsJSON(EvalState & state, bool strict,
PathSet & context, bool copyToStore = true) const;
NixStringContext & context, bool copyToStore = true) const;
/**
* Print the value as XML. Defaults to unevaluated
*/
virtual void printValueAsXML(EvalState & state, bool strict, bool location,
XMLWriter & doc, PathSet & context, PathSet & drvsSeen,
XMLWriter & doc, NixStringContext & context, PathSet & drvsSeen,
const PosIdx pos) const;
virtual ~ExternalValueBase()
@ -269,9 +269,9 @@ public:
void mkString(std::string_view s);
void mkString(std::string_view s, const PathSet & context);
void mkString(std::string_view s, const NixStringContext & context);
void mkStringMove(const char * s, const PathSet & context);
void mkStringMove(const char * s, const NixStringContext & context);
inline void mkString(const Symbol & s)
{
@ -400,8 +400,6 @@ public:
*/
bool isTrivial() const;
NixStringContext getContext(const Store &);
auto listItems()
{
struct ListIterable

17
src/libexpr/value/context.cc
View file

@ -1,11 +1,10 @@
#include "value/context.hh"
#include "store-api.hh"
#include <optional>
namespace nix {
NixStringContextElem NixStringContextElem::parse(const Store & store, std::string_view s0)
NixStringContextElem NixStringContextElem::parse(std::string_view s0)
{
std::string_view s = s0;
@ -25,41 +24,41 @@ NixStringContextElem NixStringContextElem::parse(const Store & store, std::strin
"String content element beginning with '!' should have a second '!'");
}
return NixStringContextElem::Built {
.drvPath = store.parseStorePath(s.substr(index + 1)),
.drvPath = StorePath { s.substr(index + 1) },
.output = std::string(s.substr(0, index)),
};
}
case '=': {
return NixStringContextElem::DrvDeep {
.drvPath = store.parseStorePath(s.substr(1)),
.drvPath = StorePath { s.substr(1) },
};
}
default: {
return NixStringContextElem::Opaque {
.path = store.parseStorePath(s),
.path = StorePath { s },
};
}
}
}
std::string NixStringContextElem::to_string(const Store & store) const {
std::string NixStringContextElem::to_string() const {
return std::visit(overloaded {
[&](const NixStringContextElem::Built & b) {
std::string res;
res += '!';
res += b.output;
res += '!';
res += store.printStorePath(b.drvPath);
res += b.drvPath.to_string();
return res;
},
[&](const NixStringContextElem::DrvDeep & d) {
std::string res;
res += '=';
res += store.printStorePath(d.drvPath);
res += d.drvPath.to_string();
return res;
},
[&](const NixStringContextElem::Opaque & o) {
return store.printStorePath(o.path);
return std::string { o.path.to_string() };
},
}, raw());
}

15
src/libexpr/value/context.hh
View file

@ -26,8 +26,6 @@ public:
}
};
class Store;
/**
* Plain opaque path to some store object.
*
@ -80,12 +78,15 @@ struct NixStringContextElem : _NixStringContextElem_Raw {
using DrvDeep = NixStringContextElem_DrvDeep;
using Built = NixStringContextElem_Built;
inline const Raw & raw() const {
inline const Raw & raw() const & {
return static_cast<const Raw &>(*this);
}
inline Raw & raw() {
inline Raw & raw() & {
return static_cast<Raw &>(*this);
}
inline Raw && raw() && {
return static_cast<Raw &&>(*this);
}
/**
* Decode a context string, one of:
@ -93,10 +94,10 @@ struct NixStringContextElem : _NixStringContextElem_Raw {
* - ‘=<path>’
* - ‘!<name>!<path>’
*/
static NixStringContextElem parse(const Store & store, std::string_view s);
std::string to_string(const Store & store) const;
static NixStringContextElem parse(std::string_view s);
std::string to_string() const;
};
typedef std::vector<NixStringContextElem> NixStringContext;
typedef std::set<NixStringContextElem> NixStringContext;
}