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https://github.com/privatevoid-net/nix-super.git
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* Use maps and sets in the FState data type. This ensures normalisation of
slices and derivations w.r.t. order of paths, slice elements, etc.
This commit is contained in:
Eelco Dolstra
parent
624c48260f
commit
956801fcc2
5 changed files with 86 additions and 105 deletions
19
src/fix.cc
19
src/fix.cc
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@ -137,14 +137,16 @@ static Strings fstatePathsCached(EvalState & state, const FSId & id)
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static Hash hashPackage(EvalState & state, FState fs)
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{
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if (fs.type == FState::fsDerive) {
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for (FSIds::iterator i = fs.derive.inputs.begin();
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FSIdSet inputs2;
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for (FSIdSet::iterator i = fs.derive.inputs.begin();
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i != fs.derive.inputs.end(); i++)
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{
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PkgHashes::iterator j = state.pkgHashes.find(*i);
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if (j == state.pkgHashes.end())
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throw Error(format("unknown package id %1%") % (string) *i);
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*i = j->second;
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inputs2.insert(j->second);
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}
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fs.derive.inputs = inputs2;
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}
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return hashTerm(unparseFState(fs));
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}
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@ -159,7 +161,7 @@ static string processBinding(EvalState & state, Expr e, FState & fs)
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Strings paths = fstatePathsCached(state, id);
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if (paths.size() != 1) abort();
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string path = *(paths.begin());
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fs.derive.inputs.push_back(id);
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fs.derive.inputs.insert(id);
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return path;
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}
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@ -264,12 +266,11 @@ static Expr evalExpr2(EvalState & state, Expr e)
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addToStore(srcPath, dstPath, id, true);
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SliceElem elem;
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elem.path = dstPath;
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elem.id = id;
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FState fs;
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fs.type = FState::fsSlice;
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fs.slice.roots.push_back(dstPath);
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fs.slice.elems.push_back(elem);
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fs.slice.roots.insert(dstPath);
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fs.slice.elems[dstPath] = elem;
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Hash pkgHash = hashPackage(state, fs);
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FSId pkgId = writeTerm(unparseFState(fs), "");
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@ -324,7 +325,7 @@ static Expr evalExpr2(EvalState & state, Expr e)
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else {
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string s = processBinding(state, value, fs);
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fs.derive.env.push_back(StringPair(key, s));
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fs.derive.env[key] = s;
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if (key == "build") fs.derive.builder = s;
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if (key == "name") name = s;
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@ -349,8 +350,8 @@ static Expr evalExpr2(EvalState & state, Expr e)
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if (!outIdGiven) outId = hashPackage(state, fs);
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string outPath =
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canonPath(nixStore + "/" + ((string) outId).c_str() + "-" + name);
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fs.derive.env.push_back(StringPair("out", outPath));
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fs.derive.outputs.push_back(DeriveOutput(outPath, outId));
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fs.derive.env["out"] = outPath;
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fs.derive.outputs[outPath] = outId;
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/* Write the resulting term into the Nix store directory. */
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Hash pkgHash = outIdGiven
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@ -52,14 +52,14 @@ FSId writeTerm(ATerm t, const string & suffix, FSId id)
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}
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static void parsePaths(ATermList paths, Strings & out)
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static void parsePaths(ATermList paths, StringSet & out)
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{
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while (!ATisEmpty(paths)) {
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char * s;
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ATerm t = ATgetFirst(paths);
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if (!ATmatch(t, "<str>", &s))
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throw badTerm("not a path", t);
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out.push_back(s);
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out.insert(s);
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paths = ATgetNext(paths);
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}
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}
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@ -73,21 +73,21 @@ static void checkSlice(const Slice & slice)
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StringSet decl;
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for (SliceElems::const_iterator i = slice.elems.begin();
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i != slice.elems.end(); i++)
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decl.insert(i->path);
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decl.insert(i->first);
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for (Strings::const_iterator i = slice.roots.begin();
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for (StringSet::const_iterator i = slice.roots.begin();
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i != slice.roots.end(); i++)
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if (decl.find(*i) == decl.end())
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throw Error(format("undefined root path `%1%'") % *i);
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for (SliceElems::const_iterator i = slice.elems.begin();
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i != slice.elems.end(); i++)
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for (Strings::const_iterator j = i->refs.begin();
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j != i->refs.end(); j++)
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for (StringSet::const_iterator j = i->second.refs.begin();
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j != i->second.refs.end(); j++)
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if (decl.find(*j) == decl.end())
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throw Error(
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format("undefined path `%1%' referenced by `%2%'")
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% *j % i->path);
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% *j % i->first);
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}
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@ -108,10 +108,9 @@ static bool parseSlice(ATerm t, Slice & slice)
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if (!ATmatch(t, "(<str>, <str>, [<list>])", &s1, &s2, &refs))
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throw badTerm("not a slice element", t);
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SliceElem elem;
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elem.path = s1;
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elem.id = parseHash(s2);
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parsePaths(refs, elem.refs);
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slice.elems.push_back(elem);
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slice.elems[s1] = elem;
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elems = ATgetNext(elems);
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}
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@ -141,7 +140,7 @@ static bool parseDerive(ATerm t, Derive & derive)
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ATerm t = ATgetFirst(outs);
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if (!ATmatch(t, "(<str>, <str>)", &s1, &s2))
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throw badTerm("not a derive output", t);
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derive.outputs.push_back(DeriveOutput(s1, parseHash(s2)));
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derive.outputs[s1] = parseHash(s2);
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outs = ATgetNext(outs);
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}
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@ -150,7 +149,7 @@ static bool parseDerive(ATerm t, Derive & derive)
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ATerm t = ATgetFirst(ins);
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if (!ATmatch(t, "<str>", &s))
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throw badTerm("not an id", t);
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derive.inputs.push_back(parseHash(s));
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derive.inputs.insert(parseHash(s));
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ins = ATgetNext(ins);
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}
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@ -171,7 +170,7 @@ static bool parseDerive(ATerm t, Derive & derive)
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ATerm bnd = ATgetFirst(bnds);
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if (!ATmatch(bnd, "(<str>, <str>)", &s1, &s2))
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throw badTerm("tuple of strings expected", bnd);
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derive.env.push_back(StringPair(s1, s2));
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derive.env[s1] = s2;
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bnds = ATgetNext(bnds);
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}
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@ -191,10 +190,10 @@ FState parseFState(ATerm t)
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}
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static ATermList unparsePaths(const Strings & paths)
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static ATermList unparsePaths(const StringSet & paths)
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{
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ATermList l = ATempty;
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for (Strings::const_iterator i = paths.begin();
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for (StringSet::const_iterator i = paths.begin();
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i != paths.end(); i++)
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l = ATinsert(l, ATmake("<str>", i->c_str()));
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return ATreverse(l);
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@ -210,9 +209,9 @@ static ATerm unparseSlice(const Slice & slice)
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i != slice.elems.end(); i++)
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elems = ATinsert(elems,
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ATmake("(<str>, <str>, <term>)",
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i->path.c_str(),
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((string) i->id).c_str(),
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unparsePaths(i->refs)));
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i->first.c_str(),
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((string) i->second.id).c_str(),
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unparsePaths(i->second.refs)));
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return ATmake("Slice(<term>, <term>)", roots, elems);
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}
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@ -228,7 +227,7 @@ static ATerm unparseDerive(const Derive & derive)
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i->first.c_str(), ((string) i->second).c_str()));
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ATermList ins = ATempty;
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for (FSIds::const_iterator i = derive.inputs.begin();
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for (FSIdSet::const_iterator i = derive.inputs.begin();
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i != derive.inputs.end(); i++)
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ins = ATinsert(ins, ATmake("<str>", ((string) *i).c_str()));
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@ -14,28 +14,25 @@ typedef list<FSId> FSIds;
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struct SliceElem
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{
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string path;
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FSId id;
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Strings refs;
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StringSet refs;
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};
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typedef list<SliceElem> SliceElems;
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typedef map<string, SliceElem> SliceElems;
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struct Slice
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{
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Strings roots;
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StringSet roots;
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SliceElems elems;
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};
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typedef pair<string, FSId> DeriveOutput;
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typedef pair<string, string> StringPair;
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typedef list<DeriveOutput> DeriveOutputs;
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typedef list<StringPair> StringPairs;
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typedef map<string, FSId> DeriveOutputs;
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typedef map<string, string> StringPairs;
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struct Derive
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{
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DeriveOutputs outputs;
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FSIds inputs;
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FSIdSet inputs;
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string platform;
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string builder;
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Strings args;
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@ -193,7 +193,7 @@ static void opQuery(Strings opFlags, Strings opArgs)
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string label, shape;
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if (fs.type == FState::fsDerive) {
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for (FSIds::iterator i = fs.derive.inputs.begin();
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for (FSIdSet::iterator i = fs.derive.inputs.begin();
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i != fs.derive.inputs.end(); i++)
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{
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workList.push_back(*i);
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@ -209,7 +209,7 @@ static void opQuery(Strings opFlags, Strings opArgs)
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}
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else if (fs.type == FState::fsSlice) {
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label = baseNameOf((*fs.slice.elems.begin()).path);
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label = baseNameOf((*fs.slice.elems.begin()).first);
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shape = "ellipse";
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if (isHash(string(label, 0, Hash::hashSize * 2)) &&
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label[Hash::hashSize * 2] == '-')
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118
src/normalise.cc
118
src/normalise.cc
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@ -26,14 +26,10 @@ static FSId useSuccessor(const FSId & id)
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}
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typedef map<string, FSId> OutPaths;
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typedef map<string, SliceElem> ElemMap;
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Strings pathsFromOutPaths(const OutPaths & ps)
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Strings pathsFromOutputs(const DeriveOutputs & ps)
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{
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Strings ss;
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for (OutPaths::const_iterator i = ps.begin();
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for (DeriveOutputs::const_iterator i = ps.begin();
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i != ps.end(); i++)
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ss.push_back(i->first);
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return ss;
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@ -62,31 +58,31 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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/* Some variables. */
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/* Output paths, with their ids. */
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OutPaths outPaths;
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/* Input paths, with their slice elements. */
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ElemMap inMap;
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SliceElems inSlices;
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/* Referencable paths (i.e., input and output paths). */
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Strings allPaths;
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StringSet allPaths;
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/* The environment to be passed to the builder. */
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Environment env;
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/* The result. */
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FState nfFS;
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nfFS.type = FState::fsSlice;
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/* Parse the outputs. */
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for (DeriveOutputs::iterator i = fs.derive.outputs.begin();
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i != fs.derive.outputs.end(); i++)
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{
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debug(format("building %1% in `%2%'") % (string) i->second % i->first);
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outPaths[i->first] = i->second;
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allPaths.push_back(i->first);
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allPaths.insert(i->first);
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}
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/* Obtain locks on all output paths. The locks are automatically
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released when we exit this function or Nix crashes. */
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PathLocks outputLocks(pathsFromOutPaths(outPaths));
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PathLocks outputLocks(pathsFromOutputs(fs.derive.outputs));
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/* Now check again whether there is a successor. This is because
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another process may have started building in parallel. After
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@ -113,8 +109,9 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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% fs.derive.platform % thisSystem);
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/* Realise inputs (and remember all input paths). */
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for (FSIds::iterator i = fs.derive.inputs.begin();
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i != fs.derive.inputs.end(); i++) {
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for (FSIdSet::iterator i = fs.derive.inputs.begin();
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i != fs.derive.inputs.end(); i++)
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{
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FSId nf = normaliseFState(*i, pending);
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realiseSlice(nf, pending);
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/* !!! nf should be a root of the garbage collector while we
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@ -123,11 +120,11 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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if (fs.type != FState::fsSlice) abort();
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for (SliceElems::iterator j = fs.slice.elems.begin();
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j != fs.slice.elems.end(); j++)
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inMap[j->path] = *j;
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{
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inSlices[j->first] = j->second;
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allPaths.insert(j->first);
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}
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}
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for (ElemMap::iterator i = inMap.begin(); i != inMap.end(); i++)
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allPaths.push_back(i->second.path);
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/* Most shells initialise PATH to some default (/bin:/usr/bin:...) when
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PATH is not set. We don't want this, so we fill it in with some dummy
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@ -142,8 +139,8 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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/* We can skip running the builder if we can expand all output
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paths from their ids. */
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bool fastBuild = true;
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for (OutPaths::iterator i = outPaths.begin();
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i != outPaths.end(); i++)
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for (DeriveOutputs::iterator i = fs.derive.outputs.begin();
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i != fs.derive.outputs.end(); i++)
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{
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try {
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expandId(i->second, i->first, "/", pending);
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@ -159,8 +156,8 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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/* If any of the outputs already exist but are not registered,
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delete them. */
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for (OutPaths::iterator i = outPaths.begin();
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i != outPaths.end(); i++)
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for (DeriveOutputs::iterator i = fs.derive.outputs.begin();
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i != fs.derive.outputs.end(); i++)
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{
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string path = i->first;
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FSId id;
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@ -183,21 +180,21 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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/* Check whether the output paths were created, and grep each
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output path to determine what other paths it references. */
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StringSet usedPaths;
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for (OutPaths::iterator i = outPaths.begin();
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i != outPaths.end(); i++)
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for (DeriveOutputs::iterator i = fs.derive.outputs.begin();
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i != fs.derive.outputs.end(); i++)
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{
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string path = i->first;
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if (!pathExists(path))
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throw Error(format("path `%1%' does not exist") % path);
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fs.slice.roots.push_back(path);
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nfFS.slice.roots.insert(path);
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/* For this output path, find the references to other paths contained
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in it. */
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Strings refPaths = filterReferences(path, allPaths);
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Strings refPaths = filterReferences(path,
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Strings(allPaths.begin(), allPaths.end()));
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/* Construct a slice element for this output path. */
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SliceElem elem;
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elem.path = path;
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elem.id = i->second;
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/* For each path referenced by this output path, add its id to the
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@ -207,18 +204,14 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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j != refPaths.end(); j++)
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{
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string path = *j;
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ElemMap::iterator k;
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OutPaths::iterator l;
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elem.refs.push_back(path);
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if ((k = inMap.find(path)) != inMap.end())
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usedPaths.insert(k->second.path);
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else if ((l = outPaths.find(path)) == outPaths.end())
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elem.refs.insert(path);
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if (inSlices.find(path) != inSlices.end())
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usedPaths.insert(path);
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else if (fs.derive.outputs.find(path) == fs.derive.outputs.end())
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abort();
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}
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fs.slice.elems.push_back(elem);
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nfFS.slice.elems[path] = elem;
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}
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/* Close the slice. That is, for any referenced path, add the paths
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@ -233,31 +226,30 @@ FSId normaliseFState(FSId id, FSIdSet pending)
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if (donePaths.find(path) != donePaths.end()) continue;
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donePaths.insert(path);
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ElemMap::iterator j = inMap.find(path);
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if (j == inMap.end()) abort();
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SliceElems::iterator j = inSlices.find(path);
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if (j == inSlices.end()) abort();
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fs.slice.elems.push_back(j->second);
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nfFS.slice.elems[path] = j->second;
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for (Strings::iterator k = j->second.refs.begin();
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for (StringSet::iterator k = j->second.refs.begin();
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k != j->second.refs.end(); k++)
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usedPaths.insert(*k);
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}
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/* For debugging, print out the referenced and unreferenced paths. */
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for (ElemMap::iterator i = inMap.begin();
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i != inMap.end(); i++)
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for (SliceElems::iterator i = inSlices.begin();
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i != inSlices.end(); i++)
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{
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StringSet::iterator j = donePaths.find(i->second.path);
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StringSet::iterator j = donePaths.find(i->first);
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if (j == donePaths.end())
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debug(format("NOT referenced: `%1%'") % i->second.path);
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debug(format("NOT referenced: `%1%'") % i->first);
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else
|
||||
debug(format("referenced: `%1%'") % i->second.path);
|
||||
debug(format("referenced: `%1%'") % i->first);
|
||||
}
|
||||
|
||||
/* Write the normal form. This does not have to occur in the
|
||||
transaction below because writing terms is idem-potent. */
|
||||
fs.type = FState::fsSlice;
|
||||
ATerm nf = unparseFState(fs);
|
||||
ATerm nf = unparseFState(nfFS);
|
||||
msg(lvlVomit, format("normal form: %1%") % printTerm(nf));
|
||||
FSId idNF = writeTerm(nf, "-s-" + (string) id);
|
||||
|
||||
|
|
@ -268,8 +260,8 @@ FSId normaliseFState(FSId id, FSIdSet pending)
|
|||
deleted arbitrarily, while registered paths can only be deleted
|
||||
by running the garbage collector. */
|
||||
Transaction txn(nixDB);
|
||||
for (OutPaths::iterator i = outPaths.begin();
|
||||
i != outPaths.end(); i++)
|
||||
for (DeriveOutputs::iterator i = fs.derive.outputs.begin();
|
||||
i != fs.derive.outputs.end(); i++)
|
||||
registerPath(txn, i->first, i->second);
|
||||
registerSuccessor(txn, id, idNF);
|
||||
txn.commit();
|
||||
|
|
@ -289,10 +281,7 @@ void realiseSlice(const FSId & id, FSIdSet pending)
|
|||
|
||||
for (SliceElems::const_iterator i = fs.slice.elems.begin();
|
||||
i != fs.slice.elems.end(); i++)
|
||||
{
|
||||
SliceElem elem = *i;
|
||||
expandId(elem.id, elem.path, "/", pending);
|
||||
}
|
||||
expandId(i->second.id, i->first, "/", pending);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -303,12 +292,9 @@ Strings fstatePaths(const FSId & id)
|
|||
FState fs = parseFState(termFromId(id));
|
||||
|
||||
if (fs.type == FState::fsSlice) {
|
||||
/* !!! fix complexity */
|
||||
for (Strings::const_iterator i = fs.slice.roots.begin();
|
||||
for (StringSet::const_iterator i = fs.slice.roots.begin();
|
||||
i != fs.slice.roots.end(); i++)
|
||||
for (SliceElems::const_iterator j = fs.slice.elems.begin();
|
||||
j != fs.slice.elems.end(); j++)
|
||||
if (*i == j->path) paths.push_back(j->path);
|
||||
paths.push_back(*i);
|
||||
}
|
||||
|
||||
else if (fs.type == FState::fsDerive) {
|
||||
|
|
@ -328,18 +314,16 @@ static void fstateRequisitesSet(const FSId & id,
|
|||
{
|
||||
FState fs = parseFState(termFromId(id));
|
||||
|
||||
if (fs.type == FState::fsSlice) {
|
||||
if (fs.type == FState::fsSlice)
|
||||
for (SliceElems::iterator i = fs.slice.elems.begin();
|
||||
i != fs.slice.elems.end(); i++)
|
||||
paths.insert(i->path);
|
||||
}
|
||||
paths.insert(i->first);
|
||||
|
||||
else if (fs.type == FState::fsDerive) {
|
||||
for (FSIds::iterator i = fs.derive.inputs.begin();
|
||||
else if (fs.type == FState::fsDerive)
|
||||
for (FSIdSet::iterator i = fs.derive.inputs.begin();
|
||||
i != fs.derive.inputs.end(); i++)
|
||||
fstateRequisitesSet(*i,
|
||||
includeExprs, includeSuccessors, paths);
|
||||
}
|
||||
|
||||
else abort();
|
||||
|
||||
|
|
@ -394,7 +378,7 @@ FSIds findGenerators(const FSIds & _ids)
|
|||
bool okay = true;
|
||||
for (SliceElems::const_iterator i = fs.slice.elems.begin();
|
||||
i != fs.slice.elems.end(); i++)
|
||||
if (ids.find(i->id) == ids.end()) {
|
||||
if (ids.find(i->second.id) == ids.end()) {
|
||||
okay = false;
|
||||
break;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue