forked from lix-project/lix
Make most calls to determinePos() lazy
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parent
4c755c3b3f
commit
bd383d1b6f
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@ -497,7 +497,7 @@ Value * InstallableFlake::getFlakeOutputs(EvalState & state, const flake::Locked
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auto aOutputs = vFlake->attrs->get(state.symbols.create("outputs"));
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assert(aOutputs);
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state.forceValue(*aOutputs->value, aOutputs->value->determinePos(noPos));
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state.forceValue(*aOutputs->value, [&]() { return aOutputs->value->determinePos(noPos); });
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return aOutputs->value;
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}
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@ -15,12 +15,6 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s))
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});
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}
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LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v))
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{
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throw TypeError(s, showType(v));
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}
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LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const Value & v))
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{
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throw TypeError({
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@ -31,6 +25,13 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
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void EvalState::forceValue(Value & v, const Pos & pos)
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{
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forceValue(v, [&]() { return pos; });
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}
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template<typename Callable>
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void EvalState::forceValue(Value & v, Callable getPos)
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{
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if (v.isThunk()) {
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Env * env = v.thunk.env;
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@ -47,15 +48,22 @@ void EvalState::forceValue(Value & v, const Pos & pos)
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else if (v.isApp())
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callFunction(*v.app.left, *v.app.right, v, noPos);
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else if (v.isBlackhole())
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throwEvalError(pos, "infinite recursion encountered");
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throwEvalError(getPos(), "infinite recursion encountered");
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}
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inline void EvalState::forceAttrs(Value & v, const Pos & pos)
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{
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forceValue(v, pos);
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forceAttrs(v, [&]() { return pos; });
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}
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template <typename Callable>
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inline void EvalState::forceAttrs(Value & v, Callable getPos)
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{
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forceValue(v, getPos);
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if (v.type() != nAttrs)
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throwTypeError(pos, "value is %1% while a set was expected", v);
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throwTypeError(getPos(), "value is %1% while a set was expected", v);
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}
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@ -219,7 +219,7 @@ string showType(const Value & v)
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}
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}
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Pos Value::determinePos(const Pos &pos) const
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Pos Value::determinePos(const Pos & pos) const
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{
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switch (internalType) {
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case tAttrs: return *attrs->pos;
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@ -754,6 +754,11 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
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});
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}
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LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v))
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{
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throw TypeError(s, showType(v));
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}
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LocalNoInlineNoReturn(void throwAssertionError(const Pos & pos, const char * s, const string & s1))
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{
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throw AssertionError({
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@ -1138,7 +1143,7 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
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Hence we need __overrides.) */
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if (hasOverrides) {
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Value * vOverrides = (*v.attrs)[overrides->second.displ].value;
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state.forceAttrs(*vOverrides, vOverrides->determinePos(noPos));
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state.forceAttrs(*vOverrides, [&]() { return vOverrides->determinePos(noPos); });
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Bindings * newBnds = state.allocBindings(v.attrs->capacity() + vOverrides->attrs->size());
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for (auto & i : *v.attrs)
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newBnds->push_back(i);
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@ -1500,7 +1505,8 @@ void EvalState::incrFunctionCall(ExprLambda * fun)
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void EvalState::autoCallFunction(Bindings & args, Value & fun, Value & res)
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{
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Pos pos = fun.determinePos(noPos);
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auto pos = fun.determinePos(noPos);
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forceValue(fun, pos);
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if (fun.type() == nAttrs) {
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@ -1797,7 +1803,7 @@ void EvalState::forceValueDeep(Value & v)
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recurse = [&](Value & v) {
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if (!seen.insert(&v).second) return;
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forceValue(v, v.determinePos(noPos));
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forceValue(v, [&]() { return v.determinePos(noPos); });
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if (v.type() == nAttrs) {
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for (auto & i : *v.attrs)
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@ -224,6 +224,9 @@ public:
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result. Otherwise, this is a no-op. */
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inline void forceValue(Value & v, const Pos & pos);
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template <typename Callable>
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inline void forceValue(Value & v, Callable getPos);
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/* Force a value, then recursively force list elements and
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attributes. */
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void forceValueDeep(Value & v);
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@ -232,7 +235,12 @@ public:
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NixInt forceInt(Value & v, const Pos & pos);
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NixFloat forceFloat(Value & v, const Pos & pos);
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bool forceBool(Value & v, const Pos & pos);
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inline void forceAttrs(Value & v, const Pos & pos);
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void forceAttrs(Value & v, const Pos & pos);
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template <typename Callable>
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inline void forceAttrs(Value & v, Callable getPos);
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inline void forceList(Value & v, const Pos & pos);
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void forceFunction(Value & v, const Pos & pos); // either lambda or primop
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std::string_view forceString(Value & v, const Pos & pos = noPos);
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@ -172,7 +172,7 @@ StringSet DrvInfo::queryMetaNames()
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bool DrvInfo::checkMeta(Value & v)
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{
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state->forceValue(v, v.determinePos(noPos));
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state->forceValue(v, [&]() { return v.determinePos(noPos); });
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if (v.type() == nList) {
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for (auto elem : v.listItems())
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if (!checkMeta(*elem)) return false;
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@ -278,7 +278,7 @@ static bool getDerivation(EvalState & state, Value & v,
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bool ignoreAssertionFailures)
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{
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try {
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state.forceValue(v, v.determinePos(noPos));
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state.forceValue(v, [&]() { return v.determinePos(noPos); });
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if (!state.isDerivation(v)) return true;
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/* Remove spurious duplicates (e.g., a set like `rec { x =
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@ -361,7 +361,7 @@ public:
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return internalType == tList1 ? 1 : internalType == tList2 ? 2 : bigList.size;
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}
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Pos determinePos(const Pos &pos) const;
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Pos determinePos(const Pos & pos) const;
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/* Check whether forcing this value requires a trivial amount of
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computation. In particular, function applications are
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@ -318,7 +318,7 @@ static void main_nix_build(int argc, char * * argv)
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for (auto & i : attrPaths) {
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Value & v(*findAlongAttrPath(*state, i, *autoArgs, vRoot).first);
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state->forceValue(v, v.determinePos(noPos));
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state->forceValue(v, [&]() { return v.determinePos(noPos); });
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getDerivations(*state, v, "", *autoArgs, drvs, false);
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}
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}
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@ -129,7 +129,7 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
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/* Evaluate it. */
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debug("evaluating user environment builder");
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state.forceValue(topLevel, topLevel.determinePos(noPos));
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state.forceValue(topLevel, [&]() { return topLevel.determinePos(noPos); });
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PathSet context;
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Attr & aDrvPath(*topLevel.attrs->find(state.sDrvPath));
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auto topLevelDrv = state.store->parseStorePath(state.coerceToPath(*aDrvPath.pos, *aDrvPath.value, context));
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@ -40,7 +40,7 @@ void processExpr(EvalState & state, const Strings & attrPaths,
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for (auto & i : attrPaths) {
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Value & v(*findAlongAttrPath(state, i, autoArgs, vRoot).first);
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state.forceValue(v, v.determinePos(noPos));
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state.forceValue(v, [&]() { return v.determinePos(noPos); });
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PathSet context;
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if (evalOnly) {
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@ -673,7 +673,7 @@ void NixRepl::reloadFiles()
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void NixRepl::addAttrsToScope(Value & attrs)
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{
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state->forceAttrs(attrs, attrs.determinePos(noPos));
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state->forceAttrs(attrs, [&]() { return attrs.determinePos(noPos); });
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if (displ + attrs.attrs->size() >= envSize)
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throw Error("environment full; cannot add more variables");
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@ -712,7 +712,7 @@ void NixRepl::evalString(string s, Value & v)
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{
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Expr * e = parseString(s);
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e->eval(*state, *env, v);
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state->forceValue(v, v.determinePos(noPos));
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state->forceValue(v, [&]() { return v.determinePos(noPos); });
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}
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@ -742,7 +742,7 @@ std::ostream & NixRepl::printValue(std::ostream & str, Value & v, unsigned int m
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str.flush();
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checkInterrupt();
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state->forceValue(v, v.determinePos(noPos));
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state->forceValue(v, [&]() { return v.determinePos(noPos); });
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switch (v.type()) {
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