std::vector<Vertex*> ColorationEngine::searchClique()
{
std::vector<Vertex*> clique = std::vector<Vertex*>();
std::vector<Vertex*> vertices = std::vector<Vertex*>(this->verticesSet);
std::vector<Vertex*> neighbors;
Vertex * highestDegreeVertex = NULL;
while(!vertices.empty())
{
// On récupère le sommet de plus haut degrès
highestDegreeVertex = getHighestDegreeVertex(vertices);
// On l'ajoute à la clique
if (!vertexVectorContains(clique, highestDegreeVertex))
{
clique.push_back(highestDegreeVertex);
}
// On garde dans la liste seulement ceux qui sont voisins
// avec le sommet de plus haut degrès
retainAll(vertices, highestDegreeVertex->getNeighbors());
}
return clique;
}
/**
* Parse the pattern from the given RuleCharacterIterator. The
* iterator is advanced over the parsed pattern.
* @param chars iterator over the pattern characters. Upon return
* it will be advanced to the first character after the parsed
* pattern, or the end of the iteration if all characters are
* parsed.
* @param symbols symbol table to use to parse and dereference
* variables, or null if none.
* @param rebuiltPat the pattern that was parsed, rebuilt or
* copied from the input pattern, as appropriate.
* @param options a bit mask of zero or more of the following:
* IGNORE_SPACE, CASE.
*/
void UnicodeSet::applyPattern(RuleCharacterIterator& chars,
const SymbolTable* symbols,
UnicodeString& rebuiltPat,
uint32_t options,
UnicodeSet& (UnicodeSet::*caseClosure)(int32_t attribute),
UErrorCode& ec) {
if (U_FAILURE(ec)) return;
// Syntax characters: [ ] ^ - & { }
// Recognized special forms for chars, sets: c-c s-s s&s
int32_t opts = RuleCharacterIterator::PARSE_VARIABLES |
RuleCharacterIterator::PARSE_ESCAPES;
if ((options & USET_IGNORE_SPACE) != 0) {
opts |= RuleCharacterIterator::SKIP_WHITESPACE;
}
UnicodeString patLocal, buf;
UBool usePat = FALSE;
UnicodeSetPointer scratch;
RuleCharacterIterator::Pos backup;
// mode: 0=before [, 1=between [...], 2=after ]
// lastItem: 0=none, 1=char, 2=set
int8_t lastItem = 0, mode = 0;
UChar32 lastChar = 0;
UChar op = 0;
UBool invert = FALSE;
clear();
while (mode != 2 && !chars.atEnd()) {
U_ASSERT((lastItem == 0 && op == 0) ||
(lastItem == 1 && (op == 0 || op == HYPHEN /*'-'*/)) ||
(lastItem == 2 && (op == 0 || op == HYPHEN /*'-'*/ ||
op == INTERSECTION /*'&'*/)));
UChar32 c = 0;
UBool literal = FALSE;
UnicodeSet* nested = 0; // alias - do not delete
// -------- Check for property pattern
// setMode: 0=none, 1=unicodeset, 2=propertypat, 3=preparsed
int8_t setMode = 0;
if (resemblesPropertyPattern(chars, opts)) {
setMode = 2;
}
// -------- Parse '[' of opening delimiter OR nested set.
// If there is a nested set, use `setMode' to define how
// the set should be parsed. If the '[' is part of the
// opening delimiter for this pattern, parse special
// strings "[", "[^", "[-", and "[^-". Check for stand-in
// characters representing a nested set in the symbol
// table.
else {
// Prepare to backup if necessary
chars.getPos(backup);
c = chars.next(opts, literal, ec);
if (U_FAILURE(ec)) return;
if (c == 0x5B /*'['*/ && !literal) {
if (mode == 1) {
chars.setPos(backup); // backup
setMode = 1;
} else {
// Handle opening '[' delimiter
mode = 1;
patLocal.append((UChar) 0x5B /*'['*/);
chars.getPos(backup); // prepare to backup
c = chars.next(opts, literal, ec);
if (U_FAILURE(ec)) return;
if (c == 0x5E /*'^'*/ && !literal) {
invert = TRUE;
patLocal.append((UChar) 0x5E /*'^'*/);
chars.getPos(backup); // prepare to backup
c = chars.next(opts, literal, ec);
if (U_FAILURE(ec)) return;
}
// Fall through to handle special leading '-';
// otherwise restart loop for nested [], \p{}, etc.
if (c == HYPHEN /*'-'*/) {
literal = TRUE;
// Fall through to handle literal '-' below
} else {
chars.setPos(backup); // backup
continue;
}
}
} else if (symbols != 0) {
const UnicodeFunctor *m = symbols->lookupMatcher(c);
if (m != 0) {
const UnicodeSet *ms = dynamic_cast<const UnicodeSet *>(m);
if (ms == NULL) {
ec = U_MALFORMED_SET;
return;
}
// casting away const, but `nested' won't be modified
// (important not to modify stored set)
nested = const_cast<UnicodeSet*>(ms);
setMode = 3;
}
}
}
// -------- Handle a nested set. This either is inline in
// the pattern or represented by a stand-in that has
// previously been parsed and was looked up in the symbol
// table.
if (setMode != 0) {
if (lastItem == 1) {
if (op != 0) {
// syntaxError(chars, "Char expected after operator");
ec = U_MALFORMED_SET;
return;
}
add(lastChar, lastChar);
_appendToPat(patLocal, lastChar, FALSE);
lastItem = 0;
op = 0;
}
if (op == HYPHEN /*'-'*/ || op == INTERSECTION /*'&'*/) {
patLocal.append(op);
}
if (nested == 0) {
// lazy allocation
if (!scratch.allocate()) {
ec = U_MEMORY_ALLOCATION_ERROR;
return;
}
nested = scratch.pointer();
}
switch (setMode) {
case 1:
nested->applyPattern(chars, symbols, patLocal, options, caseClosure, ec);
break;
case 2:
chars.skipIgnored(opts);
nested->applyPropertyPattern(chars, patLocal, ec);
if (U_FAILURE(ec)) return;
break;
case 3: // `nested' already parsed
nested->_toPattern(patLocal, FALSE);
break;
}
usePat = TRUE;
if (mode == 0) {
// Entire pattern is a category; leave parse loop
*this = *nested;
mode = 2;
break;
}
switch (op) {
case HYPHEN: /*'-'*/
removeAll(*nested);
break;
case INTERSECTION: /*'&'*/
retainAll(*nested);
break;
case 0:
addAll(*nested);
break;
}
op = 0;
lastItem = 2;
continue;
}
if (mode == 0) {
// syntaxError(chars, "Missing '['");
ec = U_MALFORMED_SET;
return;
}
// -------- Parse special (syntax) characters. If the
// current character is not special, or if it is escaped,
// then fall through and handle it below.
if (!literal) {
switch (c) {
case 0x5D /*']'*/:
if (lastItem == 1) {
add(lastChar, lastChar);
_appendToPat(patLocal, lastChar, FALSE);
}
// Treat final trailing '-' as a literal
if (op == HYPHEN /*'-'*/) {
add(op, op);
patLocal.append(op);
} else if (op == INTERSECTION /*'&'*/) {
// syntaxError(chars, "Trailing '&'");
ec = U_MALFORMED_SET;
return;
}
patLocal.append((UChar) 0x5D /*']'*/);
mode = 2;
continue;
case HYPHEN /*'-'*/:
if (op == 0) {
if (lastItem != 0) {
op = (UChar) c;
continue;
} else {
// Treat final trailing '-' as a literal
add(c, c);
c = chars.next(opts, literal, ec);
if (U_FAILURE(ec)) return;
if (c == 0x5D /*']'*/ && !literal) {
patLocal.append(HYPHEN_RIGHT_BRACE, 2);
mode = 2;
continue;
}
}
}
// syntaxError(chars, "'-' not after char or set");
ec = U_MALFORMED_SET;
return;
case INTERSECTION /*'&'*/:
if (lastItem == 2 && op == 0) {
op = (UChar) c;
continue;
}
// syntaxError(chars, "'&' not after set");
ec = U_MALFORMED_SET;
return;
case 0x5E /*'^'*/:
// syntaxError(chars, "'^' not after '['");
ec = U_MALFORMED_SET;
return;
case 0x7B /*'{'*/:
if (op != 0) {
// syntaxError(chars, "Missing operand after operator");
ec = U_MALFORMED_SET;
return;
}
if (lastItem == 1) {
add(lastChar, lastChar);
_appendToPat(patLocal, lastChar, FALSE);
}
lastItem = 0;
buf.truncate(0);
{
UBool ok = FALSE;
while (!chars.atEnd()) {
c = chars.next(opts, literal, ec);
if (U_FAILURE(ec)) return;
if (c == 0x7D /*'}'*/ && !literal) {
ok = TRUE;
break;
}
buf.append(c);
}
if (buf.length() < 1 || !ok) {
// syntaxError(chars, "Invalid multicharacter string");
ec = U_MALFORMED_SET;
return;
}
}
// We have new string. Add it to set and continue;
// we don't need to drop through to the further
// processing
add(buf);
patLocal.append((UChar) 0x7B /*'{'*/);
_appendToPat(patLocal, buf, FALSE);
patLocal.append((UChar) 0x7D /*'}'*/);
continue;
case SymbolTable::SYMBOL_REF:
// symbols nosymbols
// [a-$] error error (ambiguous)
// [a$] anchor anchor
// [a-$x] var "x"* literal '$'
// [a-$.] error literal '$'
// *We won't get here in the case of var "x"
{
chars.getPos(backup);
c = chars.next(opts, literal, ec);
if (U_FAILURE(ec)) return;
UBool anchor = (c == 0x5D /*']'*/ && !literal);
if (symbols == 0 && !anchor) {
c = SymbolTable::SYMBOL_REF;
chars.setPos(backup);
break; // literal '$'
}
if (anchor && op == 0) {
if (lastItem == 1) {
add(lastChar, lastChar);
_appendToPat(patLocal, lastChar, FALSE);
}
add(U_ETHER);
usePat = TRUE;
patLocal.append((UChar) SymbolTable::SYMBOL_REF);
patLocal.append((UChar) 0x5D /*']'*/);
mode = 2;
continue;
}
// syntaxError(chars, "Unquoted '$'");
ec = U_MALFORMED_SET;
return;
}
default:
break;
}
}
// -------- Parse literal characters. This includes both
// escaped chars ("\u4E01") and non-syntax characters
// ("a").
switch (lastItem) {
case 0:
lastItem = 1;
lastChar = c;
break;
case 1:
if (op == HYPHEN /*'-'*/) {
if (lastChar >= c) {
// Don't allow redundant (a-a) or empty (b-a) ranges;
// these are most likely typos.
// syntaxError(chars, "Invalid range");
ec = U_MALFORMED_SET;
return;
}
add(lastChar, c);
_appendToPat(patLocal, lastChar, FALSE);
patLocal.append(op);
_appendToPat(patLocal, c, FALSE);
lastItem = 0;
op = 0;
} else {
add(lastChar, lastChar);
_appendToPat(patLocal, lastChar, FALSE);
lastChar = c;
}
break;
case 2:
if (op != 0) {
// syntaxError(chars, "Set expected after operator");
ec = U_MALFORMED_SET;
return;
}
lastChar = c;
lastItem = 1;
break;
}
}
if (mode != 2) {
// syntaxError(chars, "Missing ']'");
ec = U_MALFORMED_SET;
return;
}
chars.skipIgnored(opts);
/**
* Handle global flags (invert, case insensitivity). If this
* pattern should be compiled case-insensitive, then we need
* to close over case BEFORE COMPLEMENTING. This makes
* patterns like /[^abc]/i work.
*/
if ((options & USET_CASE_INSENSITIVE) != 0) {
(this->*caseClosure)(USET_CASE_INSENSITIVE);
}
else if ((options & USET_ADD_CASE_MAPPINGS) != 0) {
(this->*caseClosure)(USET_ADD_CASE_MAPPINGS);
}
if (invert) {
complement();
}
// Use the rebuilt pattern (patLocal) only if necessary. Prefer the
// generated pattern.
if (usePat) {
rebuiltPat.append(patLocal);
} else {
_generatePattern(rebuiltPat, FALSE);
}
if (isBogus() && U_SUCCESS(ec)) {
// We likely ran out of memory. AHHH!
ec = U_MEMORY_ALLOCATION_ERROR;
}
}
