wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-29 06:21:14 +02:00
Code Activity

Never update values after setting the type

Browse source 
Thunks are now overwritten by a helper function
`Value::finishValue(newType, payload)` (where `payload` is the
original anonymous union inside `Value`). This helps to ensure we
never update a value elsewhere, since that would be incompatible with
parallel evaluation (i.e. after a value has transitioned from being a
thunk to being a non-thunk, it should be immutable).

There were two places where this happened: `Value::mkString()` and
`ExprAttrs::eval()`.

This PR also adds a bunch of accessor functions for value contents,
like `Value::integer()` to access the integer field in the union.
This commit is contained in:
Eelco Dolstra 2024-03-25 18:20:18 +01:00
parent 6d90287f5a
commit 8c0590fa32
35 changed files with 530 additions and 556 deletions
Download patch file Download diff file Expand all files Collapse all files

27
src/libexpr/print.cc
View file

@ -223,7 +223,7 @@ private:
{
if (options.ansiColors)
output << ANSI_CYAN;
output << v.integer;
output << v.integer();
if (options.ansiColors)
output << ANSI_NORMAL;
}
@ -232,7 +232,7 @@ private:
{
if (options.ansiColors)
output << ANSI_CYAN;
output << v.fpoint;
output << v.fpoint();
if (options.ansiColors)
output << ANSI_NORMAL;
}
@ -241,7 +241,7 @@ private:
{
if (options.ansiColors)
output << ANSI_CYAN;
printLiteralBool(output, v.boolean);
printLiteralBool(output, v.boolean());
if (options.ansiColors)
output << ANSI_NORMAL;
}
@ -271,10 +271,9 @@ private:
void printDerivation(Value & v)
{
Bindings::iterator i = v.attrs->find(state.sDrvPath);
NixStringContext context;
std::string storePath;
if (i != v.attrs->end())
if (auto i = v.attrs()->get(state.sDrvPath))
storePath = state.store->printStorePath(state.coerceToStorePath(i->pos, *i->value, context, "while evaluating the drvPath of a derivation"));
if (options.ansiColors)
@ -312,7 +311,7 @@ private:
void printAttrs(Value & v, size_t depth)
{
if (seen && !seen->insert(v.attrs).second) {
if (seen && !seen->insert(v.attrs()).second) {
printRepeated();
return;
}
@ -324,7 +323,7 @@ private:
output << "{";
AttrVec sorted;
for (auto & i : *v.attrs)
for (auto & i : *v.attrs())
sorted.emplace_back(std::pair(state.symbols[i.name], i.value));
if (options.maxAttrs == std::numeric_limits<size_t>::max())
@ -423,18 +422,18 @@ private:
if (v.isLambda()) {
output << "lambda";
if (v.lambda.fun) {
if (v.lambda.fun->name) {
output << " " << state.symbols[v.lambda.fun->name];
if (v.payload.lambda.fun) {
if (v.payload.lambda.fun->name) {
output << " " << state.symbols[v.payload.lambda.fun->name];
}
std::ostringstream s;
s << state.positions[v.lambda.fun->pos];
s << state.positions[v.payload.lambda.fun->pos];
output << " @ " << filterANSIEscapes(s.str());
}
} else if (v.isPrimOp()) {
if (v.primOp)
output << *v.primOp;
if (v.primOp())
output << *v.primOp();
else
output << "primop";
} else if (v.isPrimOpApp()) {
@ -480,7 +479,7 @@ private:
void printExternal(Value & v)
{
v.external->print(output);
v.external()->print(output);
}
void printUnknown()