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* The new normaliser now passes the unit tests.

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This commit is contained in:
Eelco Dolstra 2003-07-15 21:24:05 +00:00
parent f5b6fa5256
commit 7b3f44e05b
7 changed files with 179 additions and 34 deletions
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118
src/fstate.cc
View file

@ -459,6 +459,37 @@ static Slice parseSlice(FState fs)
}
static ATermList unparseIds(const FSIds & ids)
{
ATermList l = ATempty;
for (FSIds::const_iterator i = ids.begin();
i != ids.end(); i++)
l = ATinsert(l,
ATmake("<str>", ((string) *i).c_str()));
return ATreverse(l);
}
static FState unparseSlice(const Slice & slice)
{
ATermList roots = unparseIds(slice.roots);
ATermList elems = ATempty;
for (SliceElems::const_iterator i = slice.elems.begin();
i != slice.elems.end(); i++)
elems = ATinsert(elems,
ATmake("(<str>, <str>, <term>)",
i->path.c_str(),
((string) i->id).c_str(),
unparseIds(i->refs)));
return ATmake("Slice(<term>, <term>)", roots, elems);
}
typedef set<FSId> FSIdSet;
Slice normaliseFState(FSId id)
{
debug(format("normalising fstate"));
@ -494,24 +525,23 @@ Slice normaliseFState(FSId id)
/* Realise inputs (and remember all input paths). */
FSIds inIds;
parseIds(ins, inIds);
SliceElems inElems; /* !!! duplicates */
StringSet inPathsSet;
typedef map<string, SliceElem> ElemMap;
ElemMap inMap;
for (FSIds::iterator i = inIds.begin(); i != inIds.end(); i++) {
Slice slice = normaliseFState(*i);
realiseSlice(slice);
for (SliceElems::iterator j = slice.elems.begin();
j != slice.elems.end(); j++)
{
inElems.push_back(*j);
inPathsSet.insert(j->path);
}
inMap[j->path] = *j;
}
Strings inPaths;
copy(inPathsSet.begin(), inPathsSet.end(),
inserter(inPaths, inPaths.begin()));
for (ElemMap::iterator i = inMap.begin(); i != inMap.end(); i++)
inPaths.push_back(i->second.path);
/* Build the environment. */
Environment env;
@ -533,6 +563,7 @@ Slice normaliseFState(FSId id)
if (!ATmatch(t, "(<str>, <str>)", &s1, &s2))
throw badTerm("string expected", t);
outPaths.push_back(OutPath(s1, parseHash(s2)));
inPaths.push_back(s1);
outs = ATgetNext(outs);
}
@ -548,6 +579,7 @@ Slice normaliseFState(FSId id)
/* Check whether the output paths were created, and register each
one. */
FSIdSet used;
for (list<OutPath>::iterator i = outPaths.begin();
i != outPaths.end(); i++)
{
@ -557,25 +589,81 @@ Slice normaliseFState(FSId id)
registerPath(path, i->second);
slice.roots.push_back(i->second);
Strings outPaths = filterReferences(path, inPaths);
Strings refs = filterReferences(path, inPaths);
SliceElem elem;
elem.path = path;
elem.id = i->second;
for (Strings::iterator j = refs.begin(); j != refs.end(); j++) {
ElemMap::iterator k;
if ((k = inMap.find(*j)) != inMap.end()) {
elem.refs.push_back(k->second.id);
used.insert(k->second.id);
} else abort(); /* fix! check in created paths */
}
slice.elems.push_back(elem);
}
for (ElemMap::iterator i = inMap.begin();
i != inMap.end(); i++)
{
FSIdSet::iterator j = used.find(i->second.id);
if (j == used.end())
debug(format("NOT referenced: `%1%'") % i->second.path);
else {
debug(format("referenced: `%1%'") % i->second.path);
slice.elems.push_back(i->second);
}
}
FState nf = unparseSlice(slice);
debug(printTerm(nf));
storeSuccessor(id, nf);
return slice;
}
void realiseSlice(Slice slice)
static void checkSlice(const Slice & slice)
{
if (slice.elems.size() == 0)
throw Error("empty slice");
FSIdSet decl;
for (SliceElems::const_iterator i = slice.elems.begin();
i != slice.elems.end(); i++)
{
debug((string) i->id);
decl.insert(i->id);
}
for (FSIds::const_iterator i = slice.roots.begin();
i != slice.roots.end(); i++)
if (decl.find(*i) == decl.end())
throw Error(format("undefined id: %1%") % (string) *i);
for (SliceElems::const_iterator i = slice.elems.begin();
i != slice.elems.end(); i++)
for (FSIds::const_iterator j = i->refs.begin();
j != i->refs.end(); j++)
if (decl.find(*j) == decl.end())
throw Error(format("undefined id: %1%") % (string) *j);
}
void realiseSlice(const Slice & slice)
{
debug(format("realising slice"));
Nest nest(true);
if (slice.elems.size() == 0)
throw Error("empty slice");
checkSlice(slice);
/* Perhaps all paths already contain the right id? */
bool missing = false;
for (SliceElems::iterator i = slice.elems.begin();
for (SliceElems::const_iterator i = slice.elems.begin();
i != slice.elems.end(); i++)
{
SliceElem elem = *i;
@ -596,7 +684,7 @@ void realiseSlice(Slice slice)
}
/* For each element, expand its id at its path. */
for (SliceElems::iterator i = slice.elems.begin();
for (SliceElems::const_iterator i = slice.elems.begin();
i != slice.elems.end(); i++)
{
SliceElem elem = *i;

2
src/fstate.hh
View file

@ -113,7 +113,7 @@ void registerSuccessor(const FSId & id1, const FSId & id2);
Slice normaliseFState(FSId id);
/* Realise a Slice in the file system. */
void realiseSlice(Slice slice);
void realiseSlice(const Slice & slice);
#endif /* !__FSTATE_H */

10
src/hash.cc
View file

@ -28,6 +28,16 @@ bool Hash::operator != (Hash h2)
}
bool Hash::operator < (const Hash & h) const
{
for (unsigned int i = 0; i < hashSize; i++) {
if (hash[i] < h.hash[i]) return true;
if (hash[i] > h.hash[i]) return false;
}
return false;
}
Hash::operator string() const
{
ostringstream str;

3
src/hash.hh
View file

@ -22,6 +22,9 @@ struct Hash
/* Check whether two hash are not equal. */
bool operator != (Hash h2);
/* For sorting. */
bool operator < (const Hash & h) const;
/* Convert a hash code into a hexadecimal representation. */
operator string() const;
};

44
src/references.cc
View file

@ -1,3 +1,5 @@
#include <map>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
@ -9,24 +11,24 @@
static void search(const string & s,
Strings & refs, Strings & seen)
Strings & ids, Strings & seen)
{
for (Strings::iterator i = refs.begin();
i != refs.end(); )
for (Strings::iterator i = ids.begin();
i != ids.end(); )
{
if (s.find(*i) == string::npos)
i++;
else {
debug(format("found reference to `%1%'") % *i);
seen.push_back(*i);
i = refs.erase(i);
i = ids.erase(i);
}
}
}
void checkPath(const string & path,
Strings & refs, Strings & seen)
Strings & ids, Strings & seen)
{
struct stat st;
if (lstat(path.c_str(), &st))
@ -39,8 +41,8 @@ void checkPath(const string & path,
while (errno = 0, dirent = readdir(dir)) {
string name = dirent->d_name;
if (name == "." || name == "..") continue;
search(name, refs, seen);
checkPath(path + "/" + name, refs, seen);
search(name, ids, seen);
checkPath(path + "/" + name, ids, seen);
}
closedir(dir); /* !!! close on exception */
@ -58,7 +60,7 @@ void checkPath(const string & path,
if (read(fd, buf, st.st_size) != st.st_size)
throw SysError(format("reading file %1%") % path);
search(string(buf, st.st_size), refs, seen);
search(string(buf, st.st_size), ids, seen);
delete buf; /* !!! autodelete */
@ -69,30 +71,40 @@ void checkPath(const string & path,
char buf[st.st_size];
if (readlink(path.c_str(), buf, st.st_size) != st.st_size)
throw SysError(format("reading symbolic link `%1%'") % path);
search(string(buf, st.st_size), refs, seen);
search(string(buf, st.st_size), ids, seen);
}
else throw Error(format("unknown file type: %1%") % path);
}
Strings filterReferences(const string & path, const Strings & _refs)
Strings filterReferences(const string & path, const Strings & paths)
{
Strings refs;
map<string, string> backMap;
Strings ids;
Strings seen;
/* For efficiency (and a higher hit rate), just search for the
hash part of the file name. (This assumes that all references
have the form `HASH-bla'). */
for (Strings::const_iterator i = _refs.begin();
i != _refs.end(); i++)
for (Strings::const_iterator i = paths.begin();
i != paths.end(); i++)
{
string s = string(baseNameOf(*i), 0, 32);
parseHash(s);
refs.push_back(s);
ids.push_back(s);
backMap[s] = *i;
}
checkPath(path, refs, seen);
checkPath(path, ids, seen);
return seen;
Strings found;
for (Strings::iterator i = seen.begin(); i != seen.end(); i++)
{
map<string, string>::iterator j;
if ((j = backMap.find(*i)) == backMap.end()) abort();
found.push_back(j->second);
}
return found;
}

2
src/test-builder-2.sh
View file

@ -5,4 +5,4 @@ echo "builder 2"
mkdir $out || exit 1
cd $out || exit 1
echo "Hallo Wereld" > bla
cat $src >> bla
echo $builder >> bla

34
src/test.cc
View file

@ -137,8 +137,8 @@ void runTests()
realise(fs2id);
realise(fs2id);
string out1fn = nixStore + "/hello.txt";
string out1id = hashString("foo"); /* !!! bad */
string out1fn = nixStore + "/" + (string) out1id + "-hello.txt";
FState fs3 = ATmake(
"Derive([(<str>, <str>)], [<str>], <str>, <str>, [(\"out\", <str>)])",
out1fn.c_str(),
@ -153,6 +153,38 @@ void runTests()
realise(fs3id);
realise(fs3id);
FSId builder4id;
string builder4fn;
addToStore("./test-builder-2.sh", builder4fn, builder4id);
FState fs4 = ATmake(
"Slice([<str>], [(<str>, <str>, [])])",
((string) builder4id).c_str(),
builder4fn.c_str(),
((string) builder4id).c_str());
FSId fs4id = writeTerm(fs4, "", 0);
realise(fs4id);
string out5id = hashString("bar"); /* !!! bad */
string out5fn = nixStore + "/" + (string) out5id + "-hello2";
FState fs5 = ATmake(
"Derive([(<str>, <str>)], [<str>], <str>, <str>, [(\"out\", <str>), (\"builder\", <str>)])",
out5fn.c_str(),
((string) out5id).c_str(),
((string) fs4id).c_str(),
((string) builder4fn).c_str(),
thisSystem.c_str(),
out5fn.c_str(),
((string) builder4fn).c_str());
debug(printTerm(fs5));
FSId fs5id = writeTerm(fs5, "", 0);
realise(fs5id);
realise(fs5id);
#if 0
FState fs2 = ATmake(
"Path(<str>, Hash(<str>), [])",