mirror of
https://github.com/NixOS/nix
synced 2025-06-27 04:21:16 +02:00
replace most Pos objects/ptrs with indexes into a position table
Pos objects are somewhat wasteful as they duplicate the origin file name and input type for each object. on files that produce more than one Pos when parsed this a sizeable waste of memory (one pointer per Pos). the same goes for ptr<Pos> on 64 bit machines: parsing enough source to require 8 bytes to locate a position would need at least 8GB of input and 64GB of expression memory. it's not likely that we'll hit that any time soon, so we can use a uint32_t index to locate positions instead.
This commit is contained in:
pennae
parent
34b72775cf
commit
6526d1676b
36 changed files with 752 additions and 622 deletions
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@ -236,10 +236,10 @@ std::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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PosIdx Value::determinePos(const PosIdx 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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case tAttrs: return attrs->pos;
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case tLambda: return lambda.fun->pos;
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case tApp: return app.left->determinePos(pos);
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default: return pos;
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@ -698,7 +698,7 @@ std::optional<EvalState::Doc> EvalState::getDoc(Value & v)
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auto v2 = &v;
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if (v2->primOp->doc)
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return Doc {
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.pos = noPos,
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.pos = {},
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.name = v2->primOp->name,
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.arity = v2->primOp->arity,
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.args = v2->primOp->args,
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@ -714,21 +714,20 @@ std::optional<EvalState::Doc> EvalState::getDoc(Value & v)
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evaluator. So here are some helper functions for throwing
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exceptions. */
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void EvalState::throwEvalError(const Pos & pos, const char * s) const
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void EvalState::throwEvalError(const PosIdx pos, const char * s) const
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{
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throw EvalError({
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.msg = hintfmt(s),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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void EvalState::throwTypeError(const Pos & pos, const char * s, const Value & v) const
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void EvalState::throwTypeError(const PosIdx pos, const char * s, const Value & v) const
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{
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throw TypeError({
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.msg = hintfmt(s, showType(v)),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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void EvalState::throwEvalError(const char * s, const std::string & s2) const
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@ -736,21 +735,21 @@ void EvalState::throwEvalError(const char * s, const std::string & s2) const
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throw EvalError(s, s2);
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}
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void EvalState::throwEvalError(const Pos & pos, const Suggestions & suggestions, const char * s,
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void EvalState::throwEvalError(const PosIdx pos, const Suggestions & suggestions, const char * s,
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const std::string & s2) const
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{
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throw EvalError(ErrorInfo {
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.msg = hintfmt(s, s2),
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.errPos = pos,
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.errPos = positions[pos],
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.suggestions = suggestions,
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});
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}
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void EvalState::throwEvalError(const Pos & pos, const char * s, const std::string & s2) const
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void EvalState::throwEvalError(const PosIdx pos, const char * s, const std::string & s2) const
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{
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throw EvalError(ErrorInfo {
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.msg = hintfmt(s, s2),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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@ -759,47 +758,47 @@ void EvalState::throwEvalError(const char * s, const std::string & s2, const std
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throw EvalError(s, s2, s3);
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}
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void EvalState::throwEvalError(const Pos & pos, const char * s, const std::string & s2,
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void EvalState::throwEvalError(const PosIdx pos, const char * s, const std::string & s2,
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const std::string & s3) const
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{
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throw EvalError({
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.msg = hintfmt(s, s2, s3),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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void EvalState::throwEvalError(const Pos & p1, const char * s, const Symbol & sym, const Pos & p2) const
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void EvalState::throwEvalError(const PosIdx p1, const char * s, const Symbol & sym, const PosIdx p2) const
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{
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// p1 is where the error occurred; p2 is a position mentioned in the message.
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throw EvalError({
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.msg = hintfmt(s, sym, p2),
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.errPos = p1
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.msg = hintfmt(s, sym, positions[p2]),
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.errPos = positions[p1]
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});
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}
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void EvalState::throwTypeError(const Pos & pos, const char * s) const
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void EvalState::throwTypeError(const PosIdx pos, const char * s) const
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{
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throw TypeError({
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.msg = hintfmt(s),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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void EvalState::throwTypeError(const Pos & pos, const char * s, const ExprLambda & fun,
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void EvalState::throwTypeError(const PosIdx pos, const char * s, const ExprLambda & fun,
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const Symbol & s2) const
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{
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throw TypeError({
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.msg = hintfmt(s, fun.showNamePos(), s2),
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.errPos = pos
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.msg = hintfmt(s, fun.showNamePos(positions), s2),
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.errPos = positions[pos]
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});
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}
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void EvalState::throwTypeError(const Pos & pos, const Suggestions & suggestions, const char * s,
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void EvalState::throwTypeError(const PosIdx pos, const Suggestions & suggestions, const char * s,
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const ExprLambda & fun, const Symbol & s2) const
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{
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throw TypeError(ErrorInfo {
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.msg = hintfmt(s, fun.showNamePos(), s2),
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.errPos = pos,
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.msg = hintfmt(s, fun.showNamePos(positions), s2),
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.errPos = positions[pos],
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.suggestions = suggestions,
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});
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}
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@ -810,27 +809,27 @@ void EvalState::throwTypeError(const char * s, const Value & v) const
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throw TypeError(s, showType(v));
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}
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void EvalState::throwAssertionError(const Pos & pos, const char * s, const std::string & s1) const
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void EvalState::throwAssertionError(const PosIdx pos, const char * s, const std::string & s1) const
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{
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throw AssertionError({
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.msg = hintfmt(s, s1),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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void EvalState::throwUndefinedVarError(const Pos & pos, const char * s, const std::string & s1) const
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void EvalState::throwUndefinedVarError(const PosIdx pos, const char * s, const std::string & s1) const
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{
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throw UndefinedVarError({
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.msg = hintfmt(s, s1),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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void EvalState::throwMissingArgumentError(const Pos & pos, const char * s, const std::string & s1) const
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void EvalState::throwMissingArgumentError(const PosIdx pos, const char * s, const std::string & s1) const
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{
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throw MissingArgumentError({
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.msg = hintfmt(s, s1),
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.errPos = pos
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.errPos = positions[pos]
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});
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}
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@ -839,9 +838,9 @@ void EvalState::addErrorTrace(Error & e, const char * s, const std::string & s2)
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e.addTrace(std::nullopt, s, s2);
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}
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void EvalState::addErrorTrace(Error & e, const Pos & pos, const char * s, const std::string & s2) const
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void EvalState::addErrorTrace(Error & e, const PosIdx pos, const char * s, const std::string & s2) const
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{
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e.addTrace(pos, s, s2);
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e.addTrace(positions[pos], s, s2);
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}
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@ -898,7 +897,7 @@ inline Value * EvalState::lookupVar(Env * env, const ExprVar & var, bool noEval)
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}
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Bindings::iterator j = env->values[0]->attrs->find(var.name);
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if (j != env->values[0]->attrs->end()) {
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if (countCalls) attrSelects[*j->pos]++;
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if (countCalls) attrSelects[j->pos]++;
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return j->value;
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}
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if (!env->prevWith)
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@ -932,13 +931,14 @@ void EvalState::mkThunk_(Value & v, Expr * expr)
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}
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void EvalState::mkPos(Value & v, ptr<Pos> pos)
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void EvalState::mkPos(Value & v, PosIdx p)
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{
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if (pos->file.set()) {
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auto pos = positions[p];
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if (pos.file.set()) {
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auto attrs = buildBindings(3);
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attrs.alloc(sFile).mkString(pos->file);
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attrs.alloc(sLine).mkInt(pos->line);
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attrs.alloc(sColumn).mkInt(pos->column);
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attrs.alloc(sFile).mkString(pos.file);
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attrs.alloc(sLine).mkInt(pos.line);
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attrs.alloc(sColumn).mkInt(pos.column);
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v.mkAttrs(attrs);
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} else
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v.mkNull();
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@ -1071,7 +1071,7 @@ inline bool EvalState::evalBool(Env & env, Expr * e)
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}
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inline bool EvalState::evalBool(Env & env, Expr * e, const Pos & pos)
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inline bool EvalState::evalBool(Env & env, Expr * e, const PosIdx pos)
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{
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Value v;
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e->eval(*this, env, v);
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@ -1145,7 +1145,7 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
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} else
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vAttr = i.second.e->maybeThunk(state, i.second.inherited ? env : env2);
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env2.values[displ++] = vAttr;
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v.attrs->push_back(Attr(i.first, vAttr, ptr(&i.second.pos)));
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v.attrs->push_back(Attr(i.first, vAttr, i.second.pos));
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}
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/* If the rec contains an attribute called `__overrides', then
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@ -1177,7 +1177,7 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
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else
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for (auto & i : attrs)
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v.attrs->push_back(Attr(i.first, i.second.e->maybeThunk(state, env), ptr(&i.second.pos)));
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v.attrs->push_back(Attr(i.first, i.second.e->maybeThunk(state, env), i.second.pos));
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/* Dynamic attrs apply *after* rec and __overrides. */
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for (auto & i : dynamicAttrs) {
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@ -1190,15 +1190,15 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
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Symbol nameSym = state.symbols.create(nameVal.string.s);
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Bindings::iterator j = v.attrs->find(nameSym);
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if (j != v.attrs->end())
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state.throwEvalError(i.pos, "dynamic attribute '%1%' already defined at %2%", nameSym, *j->pos);
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state.throwEvalError(i.pos, "dynamic attribute '%1%' already defined at %2%", nameSym, j->pos);
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i.valueExpr->setName(nameSym);
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/* Keep sorted order so find can catch duplicates */
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v.attrs->push_back(Attr(nameSym, i.valueExpr->maybeThunk(state, *dynamicEnv), ptr(&i.pos)));
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v.attrs->push_back(Attr(nameSym, i.valueExpr->maybeThunk(state, *dynamicEnv), i.pos));
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v.attrs->sort(); // FIXME: inefficient
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}
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v.attrs->pos = ptr(&pos);
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v.attrs->pos = pos;
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}
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@ -1256,7 +1256,7 @@ static std::string showAttrPath(EvalState & state, Env & env, const AttrPath & a
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void ExprSelect::eval(EvalState & state, Env & env, Value & v)
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{
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Value vTmp;
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ptr<Pos> pos2(&noPos);
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PosIdx pos2;
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Value * vAttrs = &vTmp;
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e->eval(state, env, vTmp);
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@ -1289,14 +1289,15 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
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}
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vAttrs = j->value;
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pos2 = j->pos;
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if (state.countCalls) state.attrSelects[*pos2]++;
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if (state.countCalls) state.attrSelects[pos2]++;
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}
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state.forceValue(*vAttrs, (*pos2 != noPos ? *pos2 : this->pos ) );
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state.forceValue(*vAttrs, (pos2 ? pos2 : this->pos ) );
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} catch (Error & e) {
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if (*pos2 != noPos && pos2->file != state.sDerivationNix)
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state.addErrorTrace(e, *pos2, "while evaluating the attribute '%1%'",
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auto pos2r = state.positions[pos2];
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if (pos2 && pos2r.file != state.sDerivationNix)
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state.addErrorTrace(e, pos2, "while evaluating the attribute '%1%'",
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showAttrPath(state, env, attrPath));
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throw;
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}
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@ -1336,9 +1337,11 @@ void ExprLambda::eval(EvalState & state, Env & env, Value & v)
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}
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void EvalState::callFunction(Value & fun, size_t nrArgs, Value * * args, Value & vRes, const Pos & pos)
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void EvalState::callFunction(Value & fun, size_t nrArgs, Value * * args, Value & vRes, const PosIdx pos)
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{
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auto trace = evalSettings.traceFunctionCalls ? std::make_unique<FunctionCallTrace>(pos) : nullptr;
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auto trace = evalSettings.traceFunctionCalls
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? std::make_unique<FunctionCallTrace>(positions[pos])
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: nullptr;
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forceValue(fun, pos);
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@ -1701,7 +1704,7 @@ void ExprOpConcatLists::eval(EvalState & state, Env & env, Value & v)
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}
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void EvalState::concatLists(Value & v, size_t nrLists, Value * * lists, const Pos & pos)
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void EvalState::concatLists(Value & v, size_t nrLists, Value * * lists, const PosIdx pos)
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{
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nrListConcats++;
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@ -1821,7 +1824,7 @@ void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
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void ExprPos::eval(EvalState & state, Env & env, Value & v)
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{
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state.mkPos(v, ptr(&pos));
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state.mkPos(v, pos);
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}
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@ -1841,7 +1844,7 @@ void EvalState::forceValueDeep(Value & v)
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try {
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recurse(*i.value);
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} catch (Error & e) {
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addErrorTrace(e, *i.pos, "while evaluating the attribute '%1%'", i.name);
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addErrorTrace(e, i.pos, "while evaluating the attribute '%1%'", i.name);
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throw;
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}
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}
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@ -1856,7 +1859,7 @@ void EvalState::forceValueDeep(Value & v)
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}
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NixInt EvalState::forceInt(Value & v, const Pos & pos)
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NixInt EvalState::forceInt(Value & v, const PosIdx pos)
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{
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forceValue(v, pos);
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if (v.type() != nInt)
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@ -1865,7 +1868,7 @@ NixInt EvalState::forceInt(Value & v, const Pos & pos)
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}
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NixFloat EvalState::forceFloat(Value & v, const Pos & pos)
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NixFloat EvalState::forceFloat(Value & v, const PosIdx pos)
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{
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forceValue(v, pos);
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if (v.type() == nInt)
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@ -1876,7 +1879,7 @@ NixFloat EvalState::forceFloat(Value & v, const Pos & pos)
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}
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bool EvalState::forceBool(Value & v, const Pos & pos)
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bool EvalState::forceBool(Value & v, const PosIdx pos)
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{
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forceValue(v, pos);
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if (v.type() != nBool)
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@ -1891,7 +1894,7 @@ bool EvalState::isFunctor(Value & fun)
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}
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void EvalState::forceFunction(Value & v, const Pos & pos)
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void EvalState::forceFunction(Value & v, const PosIdx pos)
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{
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forceValue(v, pos);
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if (v.type() != nFunction && !isFunctor(v))
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@ -1899,7 +1902,7 @@ void EvalState::forceFunction(Value & v, const Pos & pos)
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}
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std::string_view EvalState::forceString(Value & v, const Pos & pos)
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std::string_view EvalState::forceString(Value & v, const PosIdx pos)
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{
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forceValue(v, pos);
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if (v.type() != nString) {
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@ -1952,7 +1955,7 @@ NixStringContext Value::getContext(const Store & store)
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}
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std::string_view EvalState::forceString(Value & v, PathSet & context, const Pos & pos)
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std::string_view EvalState::forceString(Value & v, PathSet & context, const PosIdx pos)
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{
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auto s = forceString(v, pos);
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copyContext(v, context);
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@ -1960,7 +1963,7 @@ std::string_view EvalState::forceString(Value & v, PathSet & context, const Pos
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}
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std::string_view EvalState::forceStringNoCtx(Value & v, const Pos & pos)
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std::string_view EvalState::forceStringNoCtx(Value & v, const PosIdx pos)
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{
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auto s = forceString(v, pos);
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if (v.string.context) {
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@ -1980,13 +1983,13 @@ bool EvalState::isDerivation(Value & v)
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if (v.type() != nAttrs) return false;
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Bindings::iterator i = v.attrs->find(sType);
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if (i == v.attrs->end()) return false;
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forceValue(*i->value, *i->pos);
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forceValue(*i->value, i->pos);
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if (i->value->type() != nString) return false;
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return strcmp(i->value->string.s, "derivation") == 0;
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}
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std::optional<std::string> EvalState::tryAttrsToString(const Pos & pos, Value & v,
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std::optional<std::string> EvalState::tryAttrsToString(const PosIdx pos, Value & v,
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PathSet & context, bool coerceMore, bool copyToStore)
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{
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auto i = v.attrs->find(sToString);
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@ -1999,7 +2002,7 @@ std::optional<std::string> EvalState::tryAttrsToString(const Pos & pos, Value &
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return {};
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}
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BackedStringView EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
|
||||
BackedStringView EvalState::coerceToString(const PosIdx pos, Value & v, PathSet & context,
|
||||
bool coerceMore, bool copyToStore, bool canonicalizePath)
|
||||
{
|
||||
forceValue(v, pos);
|
||||
|
|
@ -2028,7 +2031,7 @@ BackedStringView EvalState::coerceToString(const Pos & pos, Value & v, PathSet &
|
|||
}
|
||||
|
||||
if (v.type() == nExternal)
|
||||
return v.external->coerceToString(pos, context, coerceMore, copyToStore);
|
||||
return v.external->coerceToString(positions[pos], context, coerceMore, copyToStore);
|
||||
|
||||
if (coerceMore) {
|
||||
|
||||
|
|
@ -2081,7 +2084,7 @@ std::string EvalState::copyPathToStore(PathSet & context, const Path & path)
|
|||
}
|
||||
|
||||
|
||||
Path EvalState::coerceToPath(const Pos & pos, Value & v, PathSet & context)
|
||||
Path EvalState::coerceToPath(const PosIdx pos, Value & v, PathSet & context)
|
||||
{
|
||||
auto path = coerceToString(pos, v, context, false, false).toOwned();
|
||||
if (path == "" || path[0] != '/')
|
||||
|
|
@ -2090,14 +2093,14 @@ Path EvalState::coerceToPath(const Pos & pos, Value & v, PathSet & context)
|
|||
}
|
||||
|
||||
|
||||
StorePath EvalState::coerceToStorePath(const Pos & pos, Value & v, PathSet & context)
|
||||
StorePath EvalState::coerceToStorePath(const PosIdx pos, Value & v, PathSet & context)
|
||||
{
|
||||
auto path = coerceToString(pos, v, context, false, false).toOwned();
|
||||
if (auto storePath = store->maybeParseStorePath(path))
|
||||
return *storePath;
|
||||
throw EvalError({
|
||||
.msg = hintfmt("path '%1%' is not in the Nix store", path),
|
||||
.errPos = pos
|
||||
.errPos = positions[pos]
|
||||
});
|
||||
}
|
||||
|
||||
|
|
@ -2268,10 +2271,10 @@ void EvalState::printStats()
|
|||
obj.attr("name", (const std::string &) i.first->name);
|
||||
else
|
||||
obj.attr("name", nullptr);
|
||||
if (i.first->pos) {
|
||||
obj.attr("file", (const std::string &) i.first->pos.file);
|
||||
obj.attr("line", i.first->pos.line);
|
||||
obj.attr("column", i.first->pos.column);
|
||||
if (auto pos = positions[i.first->pos]) {
|
||||
obj.attr("file", (const std::string &) pos.file);
|
||||
obj.attr("line", pos.line);
|
||||
obj.attr("column", pos.column);
|
||||
}
|
||||
obj.attr("count", i.second);
|
||||
}
|
||||
|
|
@ -2280,10 +2283,10 @@ void EvalState::printStats()
|
|||
auto list = topObj.list("attributes");
|
||||
for (auto & i : attrSelects) {
|
||||
auto obj = list.object();
|
||||
if (i.first) {
|
||||
obj.attr("file", (const std::string &) i.first.file);
|
||||
obj.attr("line", i.first.line);
|
||||
obj.attr("column", i.first.column);
|
||||
if (auto pos = positions[i.first]) {
|
||||
obj.attr("file", (const std::string &) pos.file);
|
||||
obj.attr("line", pos.line);
|
||||
obj.attr("column", pos.column);
|
||||
}
|
||||
obj.attr("count", i.second);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue