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Merge pull request #3502 from NixOS/more-pos

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pass Pos to forceValue to improve infinite recursion error
This commit is contained in:
Domen Kožar 2020-04-18 14:05:21 +02:00 committed by GitHub
parent efaffaa9d1 b865b5b40c
commit 25ed842725
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 37 additions and 37 deletions
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4
src/libexpr/eval-inline.hh
View file

@ -57,7 +57,7 @@ inline void EvalState::forceAttrs(Value & v)
inline void EvalState::forceAttrs(Value & v, const Pos & pos) inline void EvalState::forceAttrs(Value & v, const Pos & pos)
{ {
forceValue(v); forceValue(v, pos);
if (v.type != tAttrs) if (v.type != tAttrs)
throwTypeError("value is %1% while a set was expected, at %2%", v, pos); throwTypeError("value is %1% while a set was expected, at %2%", v, pos);
} }
@ -73,7 +73,7 @@ inline void EvalState::forceList(Value & v)
inline void EvalState::forceList(Value & v, const Pos & pos) inline void EvalState::forceList(Value & v, const Pos & pos)
{ {
forceValue(v); forceValue(v, pos);
if (!v.isList()) if (!v.isList())
throwTypeError("value is %1% while a list was expected, at %2%", v, pos); throwTypeError("value is %1% while a list was expected, at %2%", v, pos);
} }

6
src/libexpr/eval.cc
View file

@ -1510,7 +1510,7 @@ NixFloat EvalState::forceFloat(Value & v, const Pos & pos)
bool EvalState::forceBool(Value & v, const Pos & pos) bool EvalState::forceBool(Value & v, const Pos & pos)
{ {
forceValue(v); forceValue(v, pos);
if (v.type != tBool) if (v.type != tBool)
throwTypeError("value is %1% while a Boolean was expected, at %2%", v, pos); throwTypeError("value is %1% while a Boolean was expected, at %2%", v, pos);
return v.boolean; return v.boolean;
@ -1525,7 +1525,7 @@ bool EvalState::isFunctor(Value & fun)
void EvalState::forceFunction(Value & v, const Pos & pos) void EvalState::forceFunction(Value & v, const Pos & pos)
{ {
forceValue(v); forceValue(v, pos);
if (v.type != tLambda && v.type != tPrimOp && v.type != tPrimOpApp && !isFunctor(v)) if (v.type != tLambda && v.type != tPrimOp && v.type != tPrimOpApp && !isFunctor(v))
throwTypeError("value is %1% while a function was expected, at %2%", v, pos); throwTypeError("value is %1% while a function was expected, at %2%", v, pos);
} }
@ -1602,7 +1602,7 @@ std::optional<string> EvalState::tryAttrsToString(const Pos & pos, Value & v,
string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context, string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
bool coerceMore, bool copyToStore) bool coerceMore, bool copyToStore)
{ {
forceValue(v); forceValue(v, pos);
string s; string s;

64
src/libexpr/primops.cc
View file

@ -241,7 +241,7 @@ void prim_exec(EvalState & state, const Pos & pos, Value * * args, Value & v)
/* Return a string representing the type of the expression. */ /* Return a string representing the type of the expression. */
static void prim_typeOf(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_typeOf(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
string t; string t;
switch (args[0]->type) { switch (args[0]->type) {
case tInt: t = "int"; break; case tInt: t = "int"; break;
@ -269,7 +269,7 @@ static void prim_typeOf(EvalState & state, const Pos & pos, Value * * args, Valu
/* Determine whether the argument is the null value. */ /* Determine whether the argument is the null value. */
static void prim_isNull(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isNull(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->type == tNull); mkBool(v, args[0]->type == tNull);
} }
@ -277,7 +277,7 @@ static void prim_isNull(EvalState & state, const Pos & pos, Value * * args, Valu
/* Determine whether the argument is a function. */ /* Determine whether the argument is a function. */
static void prim_isFunction(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isFunction(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
bool res; bool res;
switch (args[0]->type) { switch (args[0]->type) {
case tLambda: case tLambda:
@ -296,21 +296,21 @@ static void prim_isFunction(EvalState & state, const Pos & pos, Value * * args,
/* Determine whether the argument is an integer. */ /* Determine whether the argument is an integer. */
static void prim_isInt(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isInt(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->type == tInt); mkBool(v, args[0]->type == tInt);
} }
/* Determine whether the argument is a float. */ /* Determine whether the argument is a float. */
static void prim_isFloat(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isFloat(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->type == tFloat); mkBool(v, args[0]->type == tFloat);
} }
/* Determine whether the argument is a string. */ /* Determine whether the argument is a string. */
static void prim_isString(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isString(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->type == tString); mkBool(v, args[0]->type == tString);
} }
@ -318,14 +318,14 @@ static void prim_isString(EvalState & state, const Pos & pos, Value * * args, Va
/* Determine whether the argument is a Boolean. */ /* Determine whether the argument is a Boolean. */
static void prim_isBool(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isBool(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->type == tBool); mkBool(v, args[0]->type == tBool);
} }
/* Determine whether the argument is a path. */ /* Determine whether the argument is a path. */
static void prim_isPath(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isPath(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->type == tPath); mkBool(v, args[0]->type == tPath);
} }
@ -382,7 +382,7 @@ static void prim_genericClosure(EvalState & state, const Pos & pos, Value * * ar
args[0]->attrs->find(state.symbols.create("operator")); args[0]->attrs->find(state.symbols.create("operator"));
if (op == args[0]->attrs->end()) if (op == args[0]->attrs->end())
throw EvalError(format("attribute 'operator' required, at %1%") % pos); throw EvalError(format("attribute 'operator' required, at %1%") % pos);
state.forceValue(*op->value); state.forceValue(*op->value, pos);
/* Construct the closure by applying the operator to element of /* Construct the closure by applying the operator to element of
`workSet', adding the result to `workSet', continuing until `workSet', adding the result to `workSet', continuing until
@ -401,7 +401,7 @@ static void prim_genericClosure(EvalState & state, const Pos & pos, Value * * ar
e->attrs->find(state.symbols.create("key")); e->attrs->find(state.symbols.create("key"));
if (key == e->attrs->end()) if (key == e->attrs->end())
throw EvalError(format("attribute 'key' required, at %1%") % pos); throw EvalError(format("attribute 'key' required, at %1%") % pos);
state.forceValue(*key->value); state.forceValue(*key->value, pos);
if (!doneKeys.insert(key->value).second) continue; if (!doneKeys.insert(key->value).second) continue;
res.push_back(e); res.push_back(e);
@ -413,7 +413,7 @@ static void prim_genericClosure(EvalState & state, const Pos & pos, Value * * ar
/* Add the values returned by the operator to the work set. */ /* Add the values returned by the operator to the work set. */
for (unsigned int n = 0; n < call.listSize(); ++n) { for (unsigned int n = 0; n < call.listSize(); ++n) {
state.forceValue(*call.listElems()[n]); state.forceValue(*call.listElems()[n], pos);
workSet.push_back(call.listElems()[n]); workSet.push_back(call.listElems()[n]);
} }
} }
@ -445,7 +445,7 @@ static void prim_throw(EvalState & state, const Pos & pos, Value * * args, Value
static void prim_addErrorContext(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_addErrorContext(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
try { try {
state.forceValue(*args[1]); state.forceValue(*args[1], pos);
v = *args[1]; v = *args[1];
} catch (Error & e) { } catch (Error & e) {
PathSet context; PathSet context;
@ -461,7 +461,7 @@ static void prim_tryEval(EvalState & state, const Pos & pos, Value * * args, Val
{ {
state.mkAttrs(v, 2); state.mkAttrs(v, 2);
try { try {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
v.attrs->push_back(Attr(state.sValue, args[0])); v.attrs->push_back(Attr(state.sValue, args[0]));
mkBool(*state.allocAttr(v, state.symbols.create("success")), true); mkBool(*state.allocAttr(v, state.symbols.create("success")), true);
} catch (AssertionError & e) { } catch (AssertionError & e) {
@ -483,8 +483,8 @@ static void prim_getEnv(EvalState & state, const Pos & pos, Value * * args, Valu
/* Evaluate the first argument, then return the second argument. */ /* Evaluate the first argument, then return the second argument. */
static void prim_seq(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_seq(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
state.forceValue(*args[1]); state.forceValue(*args[1], pos);
v = *args[1]; v = *args[1];
} }
@ -494,7 +494,7 @@ static void prim_seq(EvalState & state, const Pos & pos, Value * * args, Value &
static void prim_deepSeq(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_deepSeq(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValueDeep(*args[0]); state.forceValueDeep(*args[0]);
state.forceValue(*args[1]); state.forceValue(*args[1], pos);
v = *args[1]; v = *args[1];
} }
@ -503,12 +503,12 @@ static void prim_deepSeq(EvalState & state, const Pos & pos, Value * * args, Val
return the second expression. Useful for debugging. */ return the second expression. Useful for debugging. */
static void prim_trace(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_trace(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
if (args[0]->type == tString) if (args[0]->type == tString)
printError(format("trace: %1%") % args[0]->string.s); printError(format("trace: %1%") % args[0]->string.s);
else else
printError(format("trace: %1%") % *args[0]); printError(format("trace: %1%") % *args[0]);
state.forceValue(*args[1]); state.forceValue(*args[1], pos);
v = *args[1]; v = *args[1];
} }
@ -599,7 +599,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
try { try {
if (ignoreNulls) { if (ignoreNulls) {
state.forceValue(*i->value); state.forceValue(*i->value, pos);
if (i->value->type == tNull) continue; if (i->value->type == tNull) continue;
} }
@ -1092,7 +1092,7 @@ static void prim_filterSource(EvalState & state, const Pos & pos, Value * * args
if (!context.empty()) if (!context.empty())
throw EvalError(format("string '%1%' cannot refer to other paths, at %2%") % path % pos); throw EvalError(format("string '%1%' cannot refer to other paths, at %2%") % path % pos);
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
if (args[0]->type != tLambda) if (args[0]->type != tLambda)
throw TypeError(format("first argument in call to 'filterSource' is not a function but %1%, at %2%") % showType(*args[0]) % pos); throw TypeError(format("first argument in call to 'filterSource' is not a function but %1%, at %2%") % showType(*args[0]) % pos);
@ -1118,7 +1118,7 @@ static void prim_path(EvalState & state, const Pos & pos, Value * * args, Value
} else if (attr.name == state.sName) } else if (attr.name == state.sName)
name = state.forceStringNoCtx(*attr.value, *attr.pos); name = state.forceStringNoCtx(*attr.value, *attr.pos);
else if (n == "filter") { else if (n == "filter") {
state.forceValue(*attr.value); state.forceValue(*attr.value, pos);
filterFun = attr.value; filterFun = attr.value;
} else if (n == "recursive") } else if (n == "recursive")
recursive = state.forceBool(*attr.value, *attr.pos); recursive = state.forceBool(*attr.value, *attr.pos);
@ -1189,7 +1189,7 @@ void prim_getAttr(EvalState & state, const Pos & pos, Value * * args, Value & v)
throw EvalError(format("attribute '%1%' missing, at %2%") % attr % pos); throw EvalError(format("attribute '%1%' missing, at %2%") % attr % pos);
// !!! add to stack trace? // !!! add to stack trace?
if (state.countCalls && i->pos) state.attrSelects[*i->pos]++; if (state.countCalls && i->pos) state.attrSelects[*i->pos]++;
state.forceValue(*i->value); state.forceValue(*i->value, pos);
v = *i->value; v = *i->value;
} }
@ -1219,7 +1219,7 @@ static void prim_hasAttr(EvalState & state, const Pos & pos, Value * * args, Val
/* Determine whether the argument is a set. */ /* Determine whether the argument is a set. */
static void prim_isAttrs(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isAttrs(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->type == tAttrs); mkBool(v, args[0]->type == tAttrs);
} }
@ -1345,7 +1345,7 @@ static void prim_catAttrs(EvalState & state, const Pos & pos, Value * * args, Va
*/ */
static void prim_functionArgs(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_functionArgs(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
if (args[0]->type != tLambda) if (args[0]->type != tLambda)
throw TypeError(format("'functionArgs' requires a function, at %1%") % pos); throw TypeError(format("'functionArgs' requires a function, at %1%") % pos);
@ -1391,7 +1391,7 @@ static void prim_mapAttrs(EvalState & state, const Pos & pos, Value * * args, Va
/* Determine whether the argument is a list. */ /* Determine whether the argument is a list. */
static void prim_isList(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_isList(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
mkBool(v, args[0]->isList()); mkBool(v, args[0]->isList());
} }
@ -1401,7 +1401,7 @@ static void elemAt(EvalState & state, const Pos & pos, Value & list, int n, Valu
state.forceList(list, pos); state.forceList(list, pos);
if (n < 0 || (unsigned int) n >= list.listSize()) if (n < 0 || (unsigned int) n >= list.listSize())
throw Error(format("list index %1% is out of bounds, at %2%") % n % pos); throw Error(format("list index %1% is out of bounds, at %2%") % n % pos);
state.forceValue(*list.listElems()[n]); state.forceValue(*list.listElems()[n], pos);
v = *list.listElems()[n]; v = *list.listElems()[n];
} }
@ -1524,9 +1524,9 @@ static void prim_foldlStrict(EvalState & state, const Pos & pos, Value * * args,
vCur = n == args[2]->listSize() - 1 ? &v : state.allocValue(); vCur = n == args[2]->listSize() - 1 ? &v : state.allocValue();
state.callFunction(vTmp, *args[2]->listElems()[n], *vCur, pos); state.callFunction(vTmp, *args[2]->listElems()[n], *vCur, pos);
} }
state.forceValue(v); state.forceValue(v, pos);
} else { } else {
state.forceValue(*args[1]); state.forceValue(*args[1], pos);
v = *args[1]; v = *args[1];
} }
} }
@ -1591,7 +1591,7 @@ static void prim_sort(EvalState & state, const Pos & pos, Value * * args, Value
auto len = args[1]->listSize(); auto len = args[1]->listSize();
state.mkList(v, len); state.mkList(v, len);
for (unsigned int n = 0; n < len; ++n) { for (unsigned int n = 0; n < len; ++n) {
state.forceValue(*args[1]->listElems()[n]); state.forceValue(*args[1]->listElems()[n], pos);
v.listElems()[n] = args[1]->listElems()[n]; v.listElems()[n] = args[1]->listElems()[n];
} }
@ -1626,7 +1626,7 @@ static void prim_partition(EvalState & state, const Pos & pos, Value * * args, V
for (unsigned int n = 0; n < len; ++n) { for (unsigned int n = 0; n < len; ++n) {
auto vElem = args[1]->listElems()[n]; auto vElem = args[1]->listElems()[n];
state.forceValue(*vElem); state.forceValue(*vElem, pos);
Value res; Value res;
state.callFunction(*args[0], *vElem, res, pos); state.callFunction(*args[0], *vElem, res, pos);
if (state.forceBool(res, pos)) if (state.forceBool(res, pos))
@ -1757,8 +1757,8 @@ static void prim_bitXor(EvalState & state, const Pos & pos, Value * * args, Valu
static void prim_lessThan(EvalState & state, const Pos & pos, Value * * args, Value & v) static void prim_lessThan(EvalState & state, const Pos & pos, Value * * args, Value & v)
{ {
state.forceValue(*args[0]); state.forceValue(*args[0], pos);
state.forceValue(*args[1]); state.forceValue(*args[1], pos);
CompareValues comp; CompareValues comp;
mkBool(v, comp(args[0], args[1])); mkBool(v, comp(args[0], args[1]));
} }