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nix repl: Put EvalState on the heap

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See 0629601da1.
This commit is contained in:
Eelco Dolstra 2020-03-19 13:52:28 +01:00
parent b244e65cdb
commit ef74fafc03
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GPG key ID: 8170B4726D7198DE
1 changed files with 32 additions and 32 deletions
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64
src/nix/repl.cc
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@ -48,7 +48,7 @@ namespace nix {
struct NixRepl : gc
{
string curDir;
EvalState state;
std::unique_ptr<EvalState> state;
Bindings * autoArgs;
Strings loadedFiles;
@ -126,8 +126,8 @@ string removeWhitespace(string s)
NixRepl::NixRepl(const Strings & searchPath, nix::ref<Store> store)
: state(searchPath, store)
, staticEnv(false, &state.staticBaseEnv)
: state(std::make_unique<EvalState>(searchPath, store))
, staticEnv(false, &state->staticBaseEnv)
, historyFile(getDataDir() + "/nix/repl-history")
{
curDir = absPath(".");
@ -356,8 +356,8 @@ StringSet NixRepl::completePrefix(string prefix)
Expr * e = parseString(expr);
Value v;
e->eval(state, *env, v);
state.forceAttrs(v);
e->eval(*state, *env, v);
state->forceAttrs(v);
for (auto & i : *v.attrs) {
string name = i.name;
@ -412,11 +412,11 @@ bool isVarName(const string & s)
Path NixRepl::getDerivationPath(Value & v) {
auto drvInfo = getDerivation(state, v, false);
auto drvInfo = getDerivation(*state, v, false);
if (!drvInfo)
throw Error("expression does not evaluate to a derivation, so I can't build it");
Path drvPath = drvInfo->queryDrvPath();
if (drvPath == "" || !state.store->isValidPath(state.store->parseStorePath(drvPath)))
if (drvPath == "" || !state->store->isValidPath(state->store->parseStorePath(drvPath)))
throw Error("expression did not evaluate to a valid derivation");
return drvPath;
}
@ -462,12 +462,12 @@ bool NixRepl::processLine(string line)
}
else if (command == ":l" || command == ":load") {
state.resetFileCache();
state->resetFileCache();
loadFile(arg);
}
else if (command == ":r" || command == ":reload") {
state.resetFileCache();
state->resetFileCache();
reloadFiles();
}
@ -479,13 +479,13 @@ bool NixRepl::processLine(string line)
if (v.type == tPath || v.type == tString) {
PathSet context;
auto filename = state.coerceToString(noPos, v, context);
pos.file = state.symbols.create(filename);
auto filename = state->coerceToString(noPos, v, context);
pos.file = state->symbols.create(filename);
} else if (v.type == tLambda) {
pos = v.lambda.fun->pos;
} else {
// assume it's a derivation
pos = findDerivationFilename(state, v, arg);
pos = findDerivationFilename(*state, v, arg);
}
// Open in EDITOR
@ -495,7 +495,7 @@ bool NixRepl::processLine(string line)
runProgram(editor, args);
// Reload right after exiting the editor
state.resetFileCache();
state->resetFileCache();
reloadFiles();
}
@ -508,7 +508,7 @@ bool NixRepl::processLine(string line)
Value v, f, result;
evalString(arg, v);
evalString("drv: (import <nixpkgs> {}).runCommand \"shell\" { buildInputs = [ drv ]; } \"\"", f);
state.callFunction(f, v, result, Pos());
state->callFunction(f, v, result, Pos());
Path drvPath = getDerivationPath(result);
runProgram(settings.nixBinDir + "/nix-shell", Strings{drvPath});
@ -524,10 +524,10 @@ bool NixRepl::processLine(string line)
but doing it in a child makes it easier to recover from
problems / SIGINT. */
if (runProgram(settings.nixBinDir + "/nix", Strings{"build", "--no-link", drvPath}) == 0) {
auto drv = readDerivation(*state.store, drvPath);
auto drv = readDerivation(*state->store, drvPath);
std::cout << std::endl << "this derivation produced the following outputs:" << std::endl;
for (auto & i : drv.outputs)
std::cout << fmt(" %s -> %s\n", i.first, state.store->printStorePath(i.second.path));
std::cout << fmt(" %s -> %s\n", i.first, state->store->printStorePath(i.second.path));
}
} else if (command == ":i") {
runProgram(settings.nixBinDir + "/nix-env", Strings{"-i", drvPath});
@ -557,11 +557,11 @@ bool NixRepl::processLine(string line)
isVarName(name = removeWhitespace(string(line, 0, p))))
{
Expr * e = parseString(string(line, p + 1));
Value & v(*state.allocValue());
Value & v(*state->allocValue());
v.type = tThunk;
v.thunk.env = env;
v.thunk.expr = e;
addVarToScope(state.symbols.create(name), v);
addVarToScope(state->symbols.create(name), v);
} else {
Value v;
evalString(line, v);
@ -578,21 +578,21 @@ void NixRepl::loadFile(const Path & path)
loadedFiles.remove(path);
loadedFiles.push_back(path);
Value v, v2;
state.evalFile(lookupFileArg(state, path), v);
state.autoCallFunction(*autoArgs, v, v2);
state->evalFile(lookupFileArg(*state, path), v);
state->autoCallFunction(*autoArgs, v, v2);
addAttrsToScope(v2);
}
void NixRepl::initEnv()
{
env = &state.allocEnv(envSize);
env->up = &state.baseEnv;
env = &state->allocEnv(envSize);
env->up = &state->baseEnv;
displ = 0;
staticEnv.vars.clear();
varNames.clear();
for (auto & i : state.staticBaseEnv.vars)
for (auto & i : state->staticBaseEnv.vars)
varNames.insert(i.first);
}
@ -616,7 +616,7 @@ void NixRepl::reloadFiles()
void NixRepl::addAttrsToScope(Value & attrs)
{
state.forceAttrs(attrs);
state->forceAttrs(attrs);
for (auto & i : *attrs.attrs)
addVarToScope(i.name, *i.value);
std::cout << format("Added %1% variables.") % attrs.attrs->size() << std::endl;
@ -635,7 +635,7 @@ void NixRepl::addVarToScope(const Symbol & name, Value & v)
Expr * NixRepl::parseString(string s)
{
Expr * e = state.parseExprFromString(s, curDir, staticEnv);
Expr * e = state->parseExprFromString(s, curDir, staticEnv);
return e;
}
@ -643,8 +643,8 @@ Expr * NixRepl::parseString(string s)
void NixRepl::evalString(string s, Value & v)
{
Expr * e = parseString(s);
e->eval(state, *env, v);
state.forceValue(v);
e->eval(*state, *env, v);
state->forceValue(v);
}
@ -674,7 +674,7 @@ std::ostream & NixRepl::printValue(std::ostream & str, Value & v, unsigned int m
str.flush();
checkInterrupt();
state.forceValue(v);
state->forceValue(v);
switch (v.type) {
@ -703,13 +703,13 @@ std::ostream & NixRepl::printValue(std::ostream & str, Value & v, unsigned int m
case tAttrs: {
seen.insert(&v);
bool isDrv = state.isDerivation(v);
bool isDrv = state->isDerivation(v);
if (isDrv) {
str << "«derivation ";
Bindings::iterator i = v.attrs->find(state.sDrvPath);
Bindings::iterator i = v.attrs->find(state->sDrvPath);
PathSet context;
Path drvPath = i != v.attrs->end() ? state.coerceToPath(*i->pos, *i->value, context) : "???";
Path drvPath = i != v.attrs->end() ? state->coerceToPath(*i->pos, *i->value, context) : "???";
str << drvPath << "»";
}
@ -812,7 +812,7 @@ struct CmdRepl : StoreCommand, MixEvalArgs
void run(ref<Store> store) override
{
auto repl = std::make_unique<NixRepl>(searchPath, openStore());
repl->autoArgs = getAutoArgs(repl->state);
repl->autoArgs = getAutoArgs(*repl->state);
repl->mainLoop(files);
}
};