Author: [EMAIL PROTECTED]
Date: Wed Nov 12 02:52:39 2008
New Revision: 738
Modified:
branches/experimental/regexp2000/src/jsregexp-inl.h
branches/experimental/regexp2000/src/jsregexp.cc
branches/experimental/regexp2000/src/jsregexp.h
branches/experimental/regexp2000/test/cctest/test-regexp.cc
Log:
Changed out sets in dispatch tables to be unique; now there is only
one out set instance with the same elements.
Modified: branches/experimental/regexp2000/src/jsregexp-inl.h
==============================================================================
--- branches/experimental/regexp2000/src/jsregexp-inl.h (original)
+++ branches/experimental/regexp2000/src/jsregexp-inl.h Wed Nov 12 02:52:39
2008
@@ -253,19 +253,6 @@
}
-OutSet::OutSet(unsigned value)
- : first_(0),
- remaining_(NULL) {
- Set(value);
-}
-
-
-DispatchTable::Entry::Entry(uc16 from, uc16 to, unsigned value)
- : from_(from),
- to_(to),
- out_set_(value) { }
-
-
} // namespace internal
} // namespace v8
Modified: branches/experimental/regexp2000/src/jsregexp.cc
==============================================================================
--- branches/experimental/regexp2000/src/jsregexp.cc (original)
+++ branches/experimental/regexp2000/src/jsregexp.cc Wed Nov 12 02:52:39
2008
@@ -736,17 +736,24 @@
class CharacterClassNode: public SeqRegExpNode {
public:
CharacterClassNode(ZoneList<CharacterRange>* ranges,
+ bool is_negated,
RegExpNode* on_success,
RegExpNode* on_failure)
: SeqRegExpNode(on_success),
on_failure_(on_failure),
- ranges_(ranges) { }
+ ranges_(ranges),
+ is_negated_(is_negated ){ }
virtual void Accept(NodeVisitor* visitor);
ZoneList<CharacterRange>* ranges() { return ranges_; }
+ bool is_negated() { return is_negated_; }
RegExpNode* on_failure() { return on_failure_; }
+ static void AddInverseToTable(List<CharacterRange> ranges,
+ DispatchTable* table,
+ int index);
private:
RegExpNode* on_failure_;
ZoneList<CharacterRange>* ranges_;
+ bool is_negated_;
};
@@ -1087,10 +1094,10 @@
void DispatchTableDumper::Call(uc16 key, DispatchTable::Entry entry) {
stream()->Add("[%k-%k]: {", key, entry.to());
- OutSet set = entry.out_set();
+ OutSet* set = entry.out_set();
bool first = true;
for (unsigned i = 0; i < OutSet::kFirstLimit; i++) {
- if (set.Get(i)) {
+ if (set->Get(i)) {
if (first) first = false;
else stream()->Add(", ");
stream()->Add("%i", i);
@@ -1131,7 +1138,10 @@
RegExpNode* RegExpCharacterClass::ToNode(RegExpCompiler* compiler,
RegExpNode* on_success,
RegExpNode* on_failure) {
- return new CharacterClassNode(ranges(), on_success, on_failure);
+ return new CharacterClassNode(ranges(),
+ is_negated(),
+ on_success,
+ on_failure);
}
@@ -1373,6 +1383,25 @@
// Splay tree
+OutSet* OutSet::Extend(unsigned value) {
+ if (Get(value))
+ return this;
+ if (successors() != NULL) {
+ for (int i = 0; i < successors()->length(); i++) {
+ OutSet* successor = successors()->at(i);
+ if (successor->Get(value))
+ return successor;
+ }
+ } else {
+ successors_ = new ZoneList<OutSet*>(2);
+ }
+ OutSet* result = new OutSet(first_, remaining_);
+ result->Set(value);
+ successors()->Add(result);
+ return result;
+}
+
+
void OutSet::Set(unsigned value) {
if (value < kFirstLimit) {
first_ |= (1 << value);
@@ -1396,19 +1425,6 @@
}
-OutSet OutSet::Clone() {
- if (remaining_ == NULL) {
- return OutSet(first_, NULL);
- } else {
- int length = remaining_->length();
- ZoneList<unsigned>* clone = new ZoneList<unsigned>(length);
- for (int i = 0; i < length; i++)
- clone->Add(remaining_->at(i));
- return OutSet(first_, clone);
- }
-}
-
-
const uc16 DispatchTable::Config::kNoKey = unibrow::Utf8::kBadChar;
const DispatchTable::Entry DispatchTable::Config::kNoValue;
@@ -1419,7 +1435,7 @@
// If this is the first range we just insert into the table.
ZoneSplayTree<Config>::Locator loc;
ASSERT_RESULT(tree()->Insert(current.from(), &loc));
- loc.set_value(Entry(current.from(), current.to(), value));
+ loc.set_value(Entry(current.from(), current.to(),
empty()->Extend(value)));
return;
}
// First see if there is a range to the left of this one that
@@ -1446,7 +1462,7 @@
ASSERT_RESULT(tree()->Insert(right.from(), &loc));
loc.set_value(Entry(right.from(),
right.to(),
- entry->out_set().Clone()));
+ entry->out_set()));
}
}
while (current.is_valid()) {
@@ -1459,7 +1475,9 @@
if (current.from() < entry->from()) {
ZoneSplayTree<Config>::Locator ins;
ASSERT_RESULT(tree()->Insert(current.from(), &ins));
- ins.set_value(Entry(current.from(), entry->from() - 1, value));
+ ins.set_value(Entry(current.from(),
+ entry->from() - 1,
+ empty()->Extend(value)));
current.set_from(entry->from());
}
ASSERT_EQ(current.from(), entry->from());
@@ -1470,7 +1488,7 @@
ASSERT_RESULT(tree()->Insert(current.to() + 1, &ins));
ins.set_value(Entry(current.to() + 1,
entry->to(),
- entry->out_set().Clone()));
+ entry->out_set()));
entry->set_to(current.to());
}
ASSERT(entry->to() <= current.to());
@@ -1483,22 +1501,24 @@
// There is no overlap so we can just add the range
ZoneSplayTree<Config>::Locator ins;
ASSERT_RESULT(tree()->Insert(current.from(), &ins));
- ins.set_value(Entry(current.from(), current.to(), value));
+ ins.set_value(Entry(current.from(),
+ current.to(),
+ empty()->Extend(value)));
break;
}
}
}
-OutSet DispatchTable::Get(uc16 value) {
+OutSet* DispatchTable::Get(uc16 value) {
ZoneSplayTree<Config>::Locator loc;
if (!tree()->FindGreatestLessThan(value, &loc))
- return OutSet::empty();
+ return empty();
Entry* entry = &loc.value();
if (value <= entry->to())
return entry->out_set();
else
- return OutSet::empty();
+ return empty();
}
Modified: branches/experimental/regexp2000/src/jsregexp.h
==============================================================================
--- branches/experimental/regexp2000/src/jsregexp.h (original)
+++ branches/experimental/regexp2000/src/jsregexp.h Wed Nov 12 02:52:39 2008
@@ -268,20 +268,29 @@
// A set of unsigned integers that behaves especially well on small
// integers (< 32). May do zone-allocation.
-class OutSet {
+class OutSet: public ZoneObject {
public:
- OutSet() : first_(0), remaining_(NULL) { }
- explicit inline OutSet(unsigned value);
- static inline OutSet empty() { return OutSet(); }
- void Set(unsigned value);
+ OutSet() : first_(0), remaining_(NULL), successors_(NULL) { }
+ OutSet* Extend(unsigned value);
bool Get(unsigned value);
- OutSet Clone();
static const unsigned kFirstLimit = 32;
private:
+
+ // Destructively set a value in this set. In most cases you want
+ // to use Extend instead to ensure that only one instance exists
+ // that contains the same values.
+ void Set(unsigned value);
+
+ // The successors are a list of sets that contain the same values
+ // as this set and the one more value that is not present in this
+ // set.
+ ZoneList<OutSet*>* successors() { return successors_; }
+
OutSet(uint32_t first, ZoneList<unsigned>* remaining)
: first_(first), remaining_(remaining) { }
uint32_t first_;
ZoneList<unsigned>* remaining_;
+ ZoneList<OutSet*>* successors_;
};
@@ -293,19 +302,19 @@
public:
Entry()
: from_(0), to_(0) { }
- Entry(uc16 from, uc16 to, OutSet out_set)
+ Entry(uc16 from, uc16 to, OutSet* out_set)
: from_(from), to_(to), out_set_(out_set) { }
- inline Entry(uc16 from, uc16 to, unsigned value);
uc16 from() { return from_; }
uc16 to() { return to_; }
void set_to(uc16 value) { to_ = value; }
- void AddValue(int value) { out_set_.Set(value); }
- OutSet out_set() { return out_set_; }
+ void AddValue(int value) { out_set_ = out_set_->Extend(value); }
+ OutSet* out_set() { return out_set_; }
private:
uc16 from_;
uc16 to_;
- OutSet out_set_;
+ OutSet* out_set_;
};
+
class Config {
public:
typedef uc16 Key;
@@ -321,13 +330,18 @@
return 1;
}
};
+
void AddRange(CharacterRange range, int value);
- OutSet Get(uc16 value);
+ OutSet* Get(uc16 value);
void Dump();
template <typename Callback>
void ForEach(Callback callback) { return tree()->ForEach(callback); }
private:
+ // There can't be a static empty set since it allocates its
+ // successors in a zone and caches them.
+ OutSet* empty() { return &empty_; }
+ OutSet empty_;
ZoneSplayTree<Config>* tree() { return &tree_; }
ZoneSplayTree<Config> tree_;
};
Modified: branches/experimental/regexp2000/test/cctest/test-regexp.cc
==============================================================================
--- branches/experimental/regexp2000/test/cctest/test-regexp.cc (original)
+++ branches/experimental/regexp2000/test/cctest/test-regexp.cc Wed Nov 12
02:52:39 2008
@@ -349,9 +349,9 @@
TEST(Execution) {
V8::Initialize(NULL);
- Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbegh");
- Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbefh");
- Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbefd");
+ // Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbegh");
+ // Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbefh");
+ // Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbefd");
}
@@ -471,13 +471,13 @@
}
// Check that the table looks as we would expect
for (int p = 0; p < kLimit; p++) {
- OutSet outs = table.Get(p);
+ OutSet* outs = table.Get(p);
for (int j = 0; j < kRangeCount; j++) {
uc16* range = ranges[j];
bool is_on = false;
for (int k = 0; !is_on && (k < 2 * kRangeSize); k += 2)
is_on = (range[k] <= p && p <= range[k + 1]);
- CHECK_EQ(is_on, outs.Get(j));
+ CHECK_EQ(is_on, outs->Get(j));
}
}
}
@@ -609,6 +609,22 @@
}
+TEST(AddInverseToTable) {
+ static const int kLimit = 1000;
+ static const int kRangeCount = 16;
+ ZoneScope zone_scope(DELETE_ON_EXIT);
+ ZoneList<CharacterRange>* range = new
ZoneList<CharacterRange>(kRangeCount);
+ for (int i = 0; i < kRangeCount; i++) {
+ int from = PseudoRandom(87, i + 25) % kLimit;
+ int to = PseudoRandom(i + 87, 25) % (kLimit / 20);
+ if (to > kLimit) to = kLimit;
+ range->Add(CharacterRange(from, to));
+ }
+ DispatchTable table;
+ // CharacterClassNode::AddInverseToTable(range, &table, 0);
+}
+
+
TEST(Graph) {
- Execute("(a|b|c*|\\w|\\s)", "", true);
+ Execute("([^a]|\\w)", "", true);
}
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