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sgf.cpp
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#include "../dataio/sgf.h"
#include "../core/fileutils.h"
#include "../core/sha2.h"
#include "../dataio/files.h"
#include "../external/nlohmann_json/json.hpp"
using namespace std;
using json = nlohmann::json;
SgfNode::SgfNode()
:props(NULL),move(0,0,C_EMPTY)
{}
SgfNode::SgfNode(const SgfNode& other)
:props(NULL),move(0,0,C_EMPTY)
{
if(other.props != NULL)
props = new map<string,vector<string>>(*(other.props));
move = other.move;
}
SgfNode::SgfNode(SgfNode&& other) noexcept
:props(NULL),move(0,0,C_EMPTY)
{
props = other.props;
other.props = NULL;
move = other.move;
}
SgfNode::~SgfNode()
{
if(props != NULL)
delete props;
}
SgfNode& SgfNode::operator=(const SgfNode& other) {
if(this == &other)
return *this;
if(props != NULL)
delete props;
if(other.props != NULL)
props = new map<string,vector<string>>(*(other.props));
else
props = NULL;
move = other.move;
return *this;
}
SgfNode& SgfNode::operator=(SgfNode&& other) noexcept {
if(props != NULL)
delete props;
props = other.props;
other.props = NULL;
move = other.move;
return *this;
}
static void propertyFail(const string& msg) {
throw IOError(msg);
}
static void propertyFail(const char* msg) {
propertyFail(string(msg));
}
static int parseSgfCoord(char c) {
if(c >= 'a' && c <= 'z')
return (int)c - (int)'a';
if(c >= 'A' && c <= 'Z')
return (int)c - (int)'A' + 26;
return -1;
}
//MoveNoBSize uses only single bytes
//If both coords are COORD_MAX, that indicates pass
static const int COORD_MAX = 128;
static MoveNoBSize parseSgfLocOrPassNoSize(const string& s, Player pla) {
if(s.length() == 0)
return MoveNoBSize(COORD_MAX,COORD_MAX,pla);
if(s.length() != 2)
propertyFail("Invalid location: " + s);
int x = parseSgfCoord(s[0]);
int y = parseSgfCoord(s[1]);
if(x < 0 || y < 0 || x >= COORD_MAX || y >= COORD_MAX)
propertyFail("Invalid location: " + s);
return MoveNoBSize(x,y,pla);
}
static Loc parseSgfLoc(const string& s, int xSize, int ySize) {
if(s.length() != 2)
propertyFail("Invalid location: " + s);
int x = parseSgfCoord(s[0]);
int y = parseSgfCoord(s[1]);
if(x < 0 || x >= xSize || y < 0 || y >= ySize)
propertyFail("Invalid location: " + s);
return Location::getLoc(x,y,xSize);
}
static void parseSgfLocRectangle(const string& s, int xSize, int ySize, int& x1, int& y1, int& x2, int& y2) {
if(contains(s,':')) {
if(s.length() != 5 || s[2] != ':')
propertyFail("Invalid location rect: " + s);
x1 = parseSgfCoord(s[0]);
y1 = parseSgfCoord(s[1]);
x2 = parseSgfCoord(s[3]);
y2 = parseSgfCoord(s[4]);
}
else {
if(s.length() != 2)
propertyFail("Invalid location: " + s);
x1 = parseSgfCoord(s[0]);
y1 = parseSgfCoord(s[1]);
x2 = x1;
y2 = y1;
}
if(x1 < 0 || x1 >= xSize || y1 < 0 || y1 >= ySize ||
x2 < 0 || x2 >= xSize || y2 < 0 || y2 >= ySize ||
x1 > x2 || y1 > y2)
propertyFail("Invalid location or location rect: " + s);
}
static Loc parseSgfLocOrPass(const string& s, int xSize, int ySize) {
if(s.length() == 0 || (s == "tt" && (xSize <= 19 || ySize <= 19)))
return Board::PASS_LOC;
return parseSgfLoc(s,xSize,ySize);
}
static void writeSgfLoc(ostream& out, Loc loc, int xSize, int ySize) {
if(xSize >= 53 || ySize >= 53)
throw StringError("Writing coordinates for SGF files for board sizes >= 53 is not implemented");
if(loc == Board::PASS_LOC || loc == Board::NULL_LOC)
return;
int x = Location::getX(loc,xSize);
int y = Location::getY(loc,xSize);
const char* chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
out << chars[x];
out << chars[y];
}
bool SgfNode::hasProperty(const char* key) const {
if(props == NULL)
return false;
return contains(*props,key);
}
bool SgfNode::hasProperty(const string& key) const {
return hasProperty(key.c_str());
}
string SgfNode::getSingleProperty(const char* key) const {
if(props == NULL)
propertyFail("SGF does not contain property: " + string(key));
if(!contains(*props,key))
propertyFail("SGF does not contain property: " + string(key));
const vector<string>& prop = map_get(*props,key);
if(prop.size() != 1)
propertyFail("SGF property is not a singleton: " + string(key));
return prop[0];
}
string SgfNode::getSingleProperty(const string& key) const {
return getSingleProperty(key.c_str());
}
const vector<string> SgfNode::getProperties(const char* key) const {
if(props == NULL)
propertyFail("SGF does not contain property: " + string(key));
if(!contains(*props,key))
propertyFail("SGF does not contain property: " + string(key));
return map_get(*props,key);
}
const vector<string> SgfNode::getProperties(const string& key) const {
return getProperties(key.c_str());
}
void SgfNode::addProperty(const string& key, const string& value) {
if(props == NULL)
props = new map<string,vector<string>>();
vector<string>& contents = (*props)[key];
contents.push_back(value);
}
void SgfNode::appendComment(const string& value) {
if(props == NULL)
props = new map<string,vector<string>>();
vector<string>& contents = (*props)["C"];
if(contents.size() == 0)
contents.push_back(value);
else {
contents[contents.size()-1] = contents[contents.size()-1] + value;
}
}
bool SgfNode::hasPlacements() const {
return props != NULL && (contains(*props,"AB") || contains(*props,"AW") || contains(*props,"AE"));
}
void SgfNode::accumPlacements(vector<Move>& moves, int xSize, int ySize) const {
if(props == NULL)
return;
auto handleRectangleList = [&](const vector<string>& elts, Player color) {
size_t len = elts.size();
for(size_t i = 0; i<len; i++) {
int x1; int y1;
int x2; int y2;
parseSgfLocRectangle(elts[i],xSize,ySize,x1,y1,x2,y2);
for(int x = x1; x <= x2; x++) {
for(int y = y1; y <= y2; y++) {
Loc loc = Location::getLoc(x,y,xSize);
moves.push_back(Move(loc,color));
}
}
}
};
if(contains(*props,"AB")) {
const vector<string>& ab = map_get(*props,"AB");
handleRectangleList(ab,P_BLACK);
}
if(contains(*props,"AW")) {
const vector<string>& aw = map_get(*props,"AW");
handleRectangleList(aw,P_WHITE);
}
if(contains(*props,"AE")) {
const vector<string>& ae = map_get(*props,"AE");
handleRectangleList(ae,C_EMPTY);
}
}
void SgfNode::accumMoves(vector<Move>& moves, int xSize, int ySize) const {
if(move.pla == C_BLACK) {
if((move.x == COORD_MAX && move.y == COORD_MAX) ||
(move.x == 19 && move.y == 19 && (xSize <= 19 || ySize <= 19))) //handle "tt"
moves.push_back(Move(Board::PASS_LOC,move.pla));
else {
if(move.x >= xSize || move.y >= ySize) propertyFail("Move out of bounds: " + Global::intToString(move.x) + "," + Global::intToString(move.y));
moves.push_back(Move(Location::getLoc(move.x,move.y,xSize),move.pla));
}
}
if(props != NULL && contains(*props,"B")) {
const vector<string>& b = map_get(*props,"B");
size_t len = b.size();
for(size_t i = 0; i<len; i++) {
Loc loc = parseSgfLocOrPass(b[i],xSize,ySize);
moves.push_back(Move(loc,P_BLACK));
}
}
if(move.pla == C_WHITE) {
if((move.x == COORD_MAX && move.y == COORD_MAX) ||
(move.x == 19 && move.y == 19 && (xSize <= 19 || ySize <= 19))) //handle "tt"
moves.push_back(Move(Board::PASS_LOC,move.pla));
else {
if(move.x >= xSize || move.y >= ySize) propertyFail("Move out of bounds: " + Global::intToString(move.x) + "," + Global::intToString(move.y));
moves.push_back(Move(Location::getLoc(move.x,move.y,xSize),move.pla));
}
}
if(props != NULL && contains(*props,"W")) {
const vector<string>& w = map_get(*props,"W");
size_t len = w.size();
for(size_t i = 0; i<len; i++) {
Loc loc = parseSgfLocOrPass(w[i],xSize,ySize);
moves.push_back(Move(loc,P_WHITE));
}
}
}
Color SgfNode::getPLSpecifiedColor() const {
if(!hasProperty("PL"))
return C_EMPTY;
string s = Global::toLower(getSingleProperty("PL"));
if(s == "b" || s == "black")
return C_BLACK;
if(s == "w" || s == "white")
return C_WHITE;
return C_EMPTY;
}
Rules SgfNode::getRulesFromRUTagOrFail() const {
if(!hasProperty("RU"))
throw StringError("SGF file does not specify rules");
string s = getSingleProperty("RU");
Rules parsed;
bool suc = Rules::tryParseRules(s,parsed);
if(!suc)
throw StringError("Could not parse rules in sgf: " + s);
return parsed;
}
Player SgfNode::getSgfWinner() const {
if(!hasProperty("RE"))
return C_EMPTY;
string s = Global::toLower(getSingleProperty("RE"));
if(Global::isPrefix(s,"b+") || Global::isPrefix(s,"black+"))
return P_BLACK;
if(Global::isPrefix(s,"w+") || Global::isPrefix(s,"white+"))
return P_WHITE;
return C_EMPTY;
}
Sgf::Sgf()
{}
Sgf::~Sgf() {
for(int i = 0; i<nodes.size(); i++)
delete nodes[i];
for(int i = 0; i<children.size(); i++)
delete children[i];
}
int64_t Sgf::depth() const {
int64_t maxChildDepth = 0;
for(int i = 0; i<children.size(); i++) {
int64_t childDepth = children[i]->depth();
if(childDepth > maxChildDepth)
maxChildDepth = childDepth;
}
return maxChildDepth + (int64_t)nodes.size();
}
int64_t Sgf::nodeCount() const {
int64_t count = 0;
for(int i = 0; i<children.size(); i++) {
count += children[i]->nodeCount();
}
return count + (int64_t)nodes.size();
}
int64_t Sgf::branchCount() const {
int64_t count = 0;
for(int i = 0; i<children.size(); i++) {
count += children[i]->branchCount();
}
if(children.size() > 1)
count += (int64_t)children.size()-1;
return count;
}
static void checkNonEmpty(const vector<SgfNode*>& nodes) {
if(nodes.size() <= 0)
throw StringError("Empty sgf");
}
XYSize Sgf::getXYSize() const {
checkNonEmpty(nodes);
int xSize = 0; //Initialize to 0 to suppress spurious clang compiler warning.
int ySize = 0; //Initialize to 0 to suppress spurious clang compiler warning.
if(!nodes[0]->hasProperty("SZ"))
return XYSize(19,19); //Some SGF files don't specify, in that case assume 19
const string& s = nodes[0]->getSingleProperty("SZ");
if(contains(s,':')) {
vector<string> pieces = Global::split(s,':');
if(pieces.size() != 2)
propertyFail("Could not parse board size in sgf: " + s);
bool suc = Global::tryStringToInt(pieces[0], xSize) && Global::tryStringToInt(pieces[1], ySize);
if(!suc)
propertyFail("Could not parse board size in sgf: " + s);
}
else {
bool suc = Global::tryStringToInt(s, xSize);
if(!suc)
propertyFail("Could not parse board size in sgf: " + s);
ySize = xSize;
}
if(xSize <= 1 || ySize <= 1)
propertyFail("Board size in sgf is <= 1: " + s);
if(xSize > Board::MAX_LEN || ySize > Board::MAX_LEN)
propertyFail(
"Board size in sgf is > Board::MAX_LEN = " + Global::intToString((int)Board::MAX_LEN) +
", if larger sizes are desired, consider increasing and recompiling: " + s
);
return XYSize(xSize,ySize);
}
float Sgf::getKomiOrFail() const {
checkNonEmpty(nodes);
return nodes[0]->getKomiOrFail();
}
float Sgf::getKomiOrDefault(float defaultKomi) const {
checkNonEmpty(nodes);
return nodes[0]->getKomiOrDefault(defaultKomi);
}
float SgfNode::getKomiOrFail() const {
if(!hasProperty("KM"))
propertyFail("Sgf does not specify komi");
return getKomiOrDefault(0.0f);
}
float SgfNode::getKomiOrDefault(float defaultKomi) const {
//Default, if SGF doesn't specify
if(!hasProperty("KM"))
return defaultKomi;
float komi;
bool suc = Global::tryStringToFloat(getSingleProperty("KM"), komi);
if(!suc)
propertyFail("Could not parse komi in sgf");
if(!Rules::komiIsIntOrHalfInt(komi)) {
//Hack - if the komi is a quarter integer and it looks like a Chinese GoGoD file, then double komi and accept
if(Rules::komiIsIntOrHalfInt(komi*2.0f) && hasProperty("US") && hasProperty("RU") &&
Global::isPrefix(getSingleProperty("US"),"GoGoD") &&
Global::toLower(getSingleProperty("RU")) == "chinese")
komi *= 2.0f;
else
propertyFail("Komi in sgf is not integer or half-integer");
}
//Hack - check for foxwq sgfs with weird komis
if(hasProperty("AP") && contains(getProperties("AP"),"foxwq")) {
if(komi == 550)
komi = 5.5f;
else if(komi == 325 || komi == 650)
komi = 6.5f;
else if(komi == 375 || komi == 750)
komi = 7.5f;
else if(komi == 350 || komi == 700)
komi = 7.0f;
else if(komi == 0)
komi = 0.0f;
else if(komi == 6.5 || komi == 7.5 || komi == 7)
{}
else
propertyFail("Currently no case implemented for foxwq komi: " + Global::floatToString(komi));
}
return komi;
}
int Sgf::getHandicapValue() const {
checkNonEmpty(nodes);
//Default, if SGF doesn't specify
if(!nodes[0]->hasProperty("HA"))
return 0;
int handicapValue = 0;
bool suc = Global::tryStringToInt(nodes[0]->getSingleProperty("HA"), handicapValue);
if(!suc)
propertyFail("Could not parse handicap value in sgf");
return handicapValue;
}
bool Sgf::hasRules() const {
checkNonEmpty(nodes);
return nodes[0]->hasProperty("RU");
}
Rules Sgf::getRulesOrFail() const {
checkNonEmpty(nodes);
Rules rules = nodes[0]->getRulesFromRUTagOrFail();
rules.komi = getKomiOrFail();
return rules;
}
Player Sgf::getSgfWinner() const {
checkNonEmpty(nodes);
return nodes[0]->getSgfWinner();
}
Color Sgf::getFirstPlayerColor() const {
checkNonEmpty(nodes);
Color plColor = nodes[0]->getPLSpecifiedColor();
if(plColor == C_BLACK || plColor == C_WHITE)
return plColor;
XYSize size = getXYSize();
int xSize = size.x;
int ySize = size.y;
vector<Move> moves;
getMoves(moves,xSize,ySize);
if(moves.size() > 0)
return moves[0].pla;
return C_BLACK;
}
int Sgf::getRank(Player pla) const {
checkNonEmpty(nodes);
string rankStr;
if(pla == P_BLACK) {
if(!nodes[0]->hasProperty("BR"))
return Sgf::RANK_UNKNOWN;
rankStr = nodes[0]->getSingleProperty("BR");
}
else if(pla == P_WHITE) {
if(!nodes[0]->hasProperty("WR"))
return Sgf::RANK_UNKNOWN;
rankStr = nodes[0]->getSingleProperty("WR");
}
else {
assert(false);
return Sgf::RANK_UNKNOWN;
}
int rank;
static constexpr int TOP_DAN = 13;
static constexpr int BOTTOM_KYU = 50;
string rankStrLower = Global::toLower(rankStr);
if(Global::isSuffix(rankStrLower,"d")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower,"d"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return rank-1;
}
if(Global::isSuffix(rankStrLower," d")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower," d"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return rank-1;
}
if(Global::isSuffix(rankStrLower,"dan")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower,"dan"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return rank-1;
}
if(Global::isSuffix(rankStrLower," dan")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower," dan"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return rank-1;
}
// \346\256\265 is UTF8 for the chinese "duan" character.
if(Global::isSuffix(rankStr,"\346\256\265")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStr,"\346\256\265"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return rank-1;
}
if(Global::isSuffix(rankStrLower,"p")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower,"p"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return std::max(rank,9)-1;
}
if(Global::isSuffix(rankStrLower," p")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower," p"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return std::max(rank,9)-1;
}
if(Global::isSuffix(rankStrLower,"pro")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower,"pro"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return std::max(rank,9)-1;
}
if(Global::isSuffix(rankStrLower," pro")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower," pro"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return std::max(rank,9)-1;
}
if(Global::isPrefix(rankStr,"P") && Global::isSuffix(rankStr,"\346\256\265")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(Global::chopPrefix(rankStr,"P"),"\346\256\265"),rank);
if(suc && rank >= 1 && rank <= TOP_DAN)
return std::max(rank,9)-1;
}
if(Global::isSuffix(rankStrLower,"k")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower,"k"),rank);
if(suc && rank >= 1 && rank <= BOTTOM_KYU)
return -rank;
}
if(Global::isSuffix(rankStrLower," k")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower," k"),rank);
if(suc && rank >= 1 && rank <= BOTTOM_KYU)
return -rank;
}
if(Global::isSuffix(rankStrLower,"kyu")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower,"kyu"),rank);
if(suc && rank >= 1 && rank <= BOTTOM_KYU)
return -rank;
}
if(Global::isSuffix(rankStrLower," kyu")) {
bool suc = Global::tryStringToInt(Global::chopSuffix(rankStrLower," kyu"),rank);
if(suc && rank >= 1 && rank <= BOTTOM_KYU)
return -rank;
}
propertyFail("Could not parse rank in sgf: " + rankStr);
return Sgf::RANK_UNKNOWN;
}
int Sgf::getRating(Player pla) const {
checkNonEmpty(nodes);
string ratingStr;
if(pla == P_BLACK) {
if(!nodes[0]->hasProperty("BR"))
propertyFail("Could not parse rating in sgf");
ratingStr = nodes[0]->getSingleProperty("BR");
}
else if(pla == P_WHITE) {
if(!nodes[0]->hasProperty("WR"))
propertyFail("Could not find rating in sgf");
ratingStr = nodes[0]->getSingleProperty("WR");
}
else {
assert(false);
propertyFail("Could not find rating in sgf");
}
int rating;
bool suc = Global::tryStringToInt(ratingStr,rating);
if(!suc)
propertyFail("Could not parse rating in sgf: " + ratingStr);
return rating;
}
string Sgf::getPlayerName(Player pla) const {
if(pla == P_BLACK) {
if(!nodes[0]->hasProperty("PB"))
return "";
return nodes[0]->getSingleProperty("PB");
}
else if(pla == P_WHITE) {
if(!nodes[0]->hasProperty("PW"))
return "";
return nodes[0]->getSingleProperty("PW");
}
assert(false);
return "";
}
bool Sgf::hasRootProperty(const std::string& property) const {
if(nodes.size() <= 0)
return false;
return nodes[0]->hasProperty(property);
}
std::string Sgf::getRootPropertyWithDefault(const std::string& property, const std::string& defaultRet) const {
if(nodes.size() <= 0)
return defaultRet;
if(!nodes[0]->hasProperty(property))
return defaultRet;
return nodes[0]->getSingleProperty(property);
}
std::vector<std::string> Sgf::getRootProperties(const std::string& property) const {
if(nodes.size() <= 0)
return std::vector<std::string>();
return nodes[0]->getProperties(property);
}
void Sgf::addRootProperty(const std::string& key, const std::string& value) {
checkNonEmpty(nodes);
nodes[0]->addProperty(key,value);
}
void Sgf::getPlacements(vector<Move>& moves, int xSize, int ySize) const {
moves.clear();
checkNonEmpty(nodes);
nodes[0]->accumPlacements(moves,xSize,ySize);
}
//Gets the longest child if the sgf has branches
void Sgf::getMoves(vector<Move>& moves, int xSize, int ySize) const {
moves.clear();
getMovesHelper(moves,xSize,ySize);
}
void Sgf::getMovesHelper(vector<Move>& moves, int xSize, int ySize) const {
checkNonEmpty(nodes);
for(int i = 0; i<nodes.size(); i++) {
if(i > 0 && nodes[i]->hasPlacements())
propertyFail("Found stone placements after the root, game records that are not simply ordinary play not currently supported");
nodes[i]->accumMoves(moves,xSize,ySize);
}
int64_t maxChildDepth = 0;
Sgf* maxChild = NULL;
for(int i = 0; i<children.size(); i++) {
int64_t childDepth = children[i]->depth();
if(childDepth > maxChildDepth) {
maxChildDepth = childDepth;
maxChild = children[i];
}
}
if(maxChild != NULL) {
maxChild->getMovesHelper(moves,xSize,ySize);
}
}
void Sgf::loadAllUniquePositions(
std::set<Hash128>& uniqueHashes,
bool hashComments,
bool hashParent,
bool flipIfPassOrWFirst,
bool allowGameOver,
Rand* rand,
vector<PositionSample>& samples
) const {
std::function<void(PositionSample&, const BoardHistory&, const string&)> f = [&samples](PositionSample& sample, const BoardHistory& hist, const string& comments) {
(void)hist;
(void)comments;
samples.push_back(sample);
};
iterAllUniquePositions(uniqueHashes,hashComments,hashParent,flipIfPassOrWFirst,allowGameOver,rand,f);
}
void Sgf::iterAllUniquePositions(
std::set<Hash128>& uniqueHashes,
bool hashComments,
bool hashParent,
bool flipIfPassOrWFirst,
bool allowGameOver,
Rand* rand,
std::function<void(PositionSample&,const BoardHistory&,const std::string&)> f
) const {
XYSize size = getXYSize();
int xSize = size.x;
int ySize = size.y;
Board board(xSize,ySize);
Player nextPla = nodes.size() > 0 ? nodes[0]->getPLSpecifiedColor() : C_EMPTY;
if(nextPla == C_EMPTY)
nextPla = C_BLACK;
Rules rules = Rules::getTrompTaylorish();
rules.koRule = Rules::KO_SITUATIONAL;
rules.multiStoneSuicideLegal = true;
BoardHistory hist(board,nextPla,rules,0);
PositionSample sampleBuf;
std::vector<std::pair<int64_t,int64_t>> variationTraceNodesBranch;
bool isRoot = true;
bool requireUnique = true;
iterAllPositionsHelper(
board,hist,nextPla,rules,xSize,ySize,sampleBuf,uniqueHashes,requireUnique,hashComments,hashParent,flipIfPassOrWFirst,allowGameOver,isRoot,rand,variationTraceNodesBranch,f
);
}
void Sgf::iterAllPositions(
bool flipIfPassOrWFirst,
bool allowGameOver,
Rand* rand,
std::function<void(PositionSample&,const BoardHistory&,const std::string&)> f
) const {
XYSize size = getXYSize();
int xSize = size.x;
int ySize = size.y;
Board board(xSize,ySize);
Player nextPla = nodes.size() > 0 ? nodes[0]->getPLSpecifiedColor() : C_EMPTY;
if(nextPla == C_EMPTY)
nextPla = C_BLACK;
Rules rules = Rules::getTrompTaylorish();
rules.koRule = Rules::KO_SITUATIONAL;
rules.multiStoneSuicideLegal = true;
BoardHistory hist(board,nextPla,rules,0);
PositionSample sampleBuf;
std::vector<std::pair<int64_t,int64_t>> variationTraceNodesBranch;
std::set<Hash128> uniqueHashes;
bool isRoot = true;
bool requireUnique = false;
bool hashComments = false;
bool hashParent = false;
iterAllPositionsHelper(
board,hist,nextPla,rules,xSize,ySize,sampleBuf,uniqueHashes,requireUnique,hashComments,hashParent,flipIfPassOrWFirst,allowGameOver,isRoot,rand,variationTraceNodesBranch,f
);
}
void Sgf::iterAllPositionsHelper(
Board& board, BoardHistory& hist, Player nextPla,
const Rules& rules, int xSize, int ySize,
PositionSample& sampleBuf,
std::set<Hash128>& uniqueHashes,
bool requireUnique,
bool hashComments,
bool hashParent,
bool flipIfPassOrWFirst,
bool allowGameOver,
bool isRoot,
Rand* rand,
std::vector<std::pair<int64_t,int64_t>>& variationTraceNodesBranch,
std::function<void(PositionSample&,const BoardHistory&,const std::string&)> f
) const {
vector<Move> buf;
for(size_t i = 0; i<nodes.size(); i++) {
string comments;
if(nodes[i]->hasProperty("C"))
comments = nodes[i]->getSingleProperty("C");
//Do the root node even if it has no placements since nothing else will do it.
if(isRoot && i == 0 && !nodes[i]->hasPlacements()) {
samplePositionHelper(board,hist,nextPla,sampleBuf,uniqueHashes,requireUnique,hashComments,hashParent,flipIfPassOrWFirst,allowGameOver,comments,f);
}
//Handle placements
if(nodes[i]->hasPlacements()) {
buf.clear();
nodes[i]->accumPlacements(buf,xSize,ySize);
if(buf.size() > 0) {
int netStonesAdded = 0;
for(size_t j = 0; j<buf.size(); j++) {
if(board.colors[buf[j].loc] != C_EMPTY && buf[j].pla == C_EMPTY)
netStonesAdded--;
if(board.colors[buf[j].loc] == C_EMPTY && buf[j].pla != C_EMPTY)
netStonesAdded++;
}
bool suc = board.setStonesFailIfNoLibs(buf);
if(!suc) {
ostringstream trace;
for(size_t s = 0; s < variationTraceNodesBranch.size(); s++) {
trace << "forward " << variationTraceNodesBranch[s].first << " ";
trace << "branch " << variationTraceNodesBranch[s].second << " ";
}
trace << "forward " << i;
throw StringError(
"Illegal placements in " + fileName + " SGF trace (branches 0-indexed): " + trace.str()
);
}
board.clearSimpleKoLoc();
//Clear history any time placements happen, but make sure we track the initial turn number.
int64_t initialTurnNumber = hist.initialTurnNumber;
initialTurnNumber += (int64_t)hist.moveHistory.size();
//If stones were net added, count each such stone as half of an initial turn.
//Sort of hacky, but improves the correlation between initial turn and how full the board is compared
//to not doing it.
if(netStonesAdded > 0)
initialTurnNumber += (netStonesAdded+1)/2;
//Also make sure the turn number is at least as large as the number of stones in the board
if(board.numStonesOnBoard() > initialTurnNumber)
initialTurnNumber = board.numStonesOnBoard();
hist.clear(board,nextPla,rules,0);
hist.setInitialTurnNumber(initialTurnNumber);
}
samplePositionHelper(board,hist,nextPla,sampleBuf,uniqueHashes,requireUnique,hashComments,hashParent,flipIfPassOrWFirst,allowGameOver,comments,f);
}
//Handle actual moves
buf.clear();
nodes[i]->accumMoves(buf,xSize,ySize);
for(size_t j = 0; j<buf.size(); j++) {
bool suc = hist.makeBoardMoveTolerant(board,buf[j].loc,buf[j].pla);
if(!suc) {
ostringstream trace;
for(size_t s = 0; s < variationTraceNodesBranch.size(); s++) {
trace << "forward " << variationTraceNodesBranch[s].first << " ";
trace << "branch " << variationTraceNodesBranch[s].second << " ";
}
trace << "forward " << i;
// hist.printBasicInfo(trace, board);
// hist.printDebugInfo(trace, board);
// trace << Location::toString(buf[j].loc,board) << endl;
throw StringError(
"Illegal move in " + fileName + " effective turn " + Global::int64ToString(j+hist.initialTurnNumber) + " move " +
Location::toString(buf[j].loc, board.x_size, board.y_size) + " SGF trace (branches 0-indexed): " + trace.str()
);
}
if(hist.moveHistory.size() > 0x3FFFFFFF)
throw StringError("too many moves in sgf");
nextPla = getOpp(buf[j].pla);
samplePositionHelper(board,hist,nextPla,sampleBuf,uniqueHashes,requireUnique,hashComments,hashParent,flipIfPassOrWFirst,allowGameOver,comments,f);
}
}
std::vector<size_t> permutation(children.size());
for(size_t i = 0; i<children.size(); i++)
permutation[i] = i;
if(rand != NULL) {
rand->shuffle(permutation);
}
for(size_t c = 0; c<children.size(); c++) {
size_t i = permutation[c];
std::unique_ptr<Board> copy = std::make_unique<Board>(board);
std::unique_ptr<BoardHistory> histCopy = std::make_unique<BoardHistory>(hist);
variationTraceNodesBranch.push_back(std::make_pair((int64_t)nodes.size(),(int64_t)i));
children[i]->iterAllPositionsHelper(
*copy,*histCopy,nextPla,rules,xSize,ySize,sampleBuf,uniqueHashes,requireUnique,hashComments,hashParent,flipIfPassOrWFirst,allowGameOver,false,rand,variationTraceNodesBranch,f
);
assert(variationTraceNodesBranch.size() > 0);
variationTraceNodesBranch.erase(variationTraceNodesBranch.begin()+(variationTraceNodesBranch.size()-1));
}
}
void Sgf::samplePositionHelper(
Board& board, BoardHistory& hist, Player nextPla,
PositionSample& sampleBuf,
std::set<Hash128>& uniqueHashes,
bool requireUnique,
bool hashComments,
bool hashParent,
bool flipIfPassOrWFirst,
bool allowGameOver,
const std::string& comments,
std::function<void(PositionSample&,const BoardHistory&,const std::string&)> f
) const {
//If the game is over or there were two consecutive passes, skip
if(!allowGameOver) {
if(hist.isGameFinished || (
hist.moveHistory.size() >= 2
&& hist.moveHistory[hist.moveHistory.size()-1].loc == Board::PASS_LOC
&& hist.moveHistory[hist.moveHistory.size()-2].loc == Board::PASS_LOC
))
return;
}
//Hash based on position, player, and simple ko
Hash128 situationHash = board.pos_hash;
situationHash ^= Board::ZOBRIST_PLAYER_HASH[nextPla];
assert(hist.encorePhase == 0);
if(board.ko_loc != Board::NULL_LOC)
situationHash ^= Board::ZOBRIST_KO_LOC_HASH[board.ko_loc];
if(hashComments)
situationHash.hash0 += Hash::simpleHash(comments.c_str());
if(hashParent) {
Hash128 parentHash = Hash128();
if(hist.moveHistory.size() > 0) {
const Board& prevBoard = hist.getRecentBoard(1);
parentHash = prevBoard.pos_hash;
if(prevBoard.ko_loc != Board::NULL_LOC)
parentHash ^= Board::ZOBRIST_KO_LOC_HASH[prevBoard.ko_loc];
}
//Mix in a blended up hash of the previous board state to avoid zobrist cancellation, also swapping halves
Hash128 mixed = Hash128(Hash::murmurMix(parentHash.hash1),Hash::splitMix64(parentHash.hash0));
situationHash ^= mixed;
}
if(requireUnique && contains(uniqueHashes,situationHash))
return;
uniqueHashes.insert(situationHash);
//Snap the position 5 turns ago so as to include 5 moves of history.
assert(BoardHistory::NUM_RECENT_BOARDS > 5);
int turnsAgoToSnap = 0;
while(turnsAgoToSnap < 5) {
if(turnsAgoToSnap >= hist.moveHistory.size())
break;
//If a player played twice in a row, then instead snap so as not to have a move history
//with a double move by the same player.
if(turnsAgoToSnap > 0 && hist.moveHistory[hist.moveHistory.size() - turnsAgoToSnap - 1].pla == hist.moveHistory[hist.moveHistory.size() - turnsAgoToSnap].pla)
break;
if(turnsAgoToSnap == 0 && hist.moveHistory[hist.moveHistory.size() - turnsAgoToSnap - 1].pla == nextPla)
break;
turnsAgoToSnap++;
}
if(hist.moveHistory.size() > 0x3FFFFFFF)
throw StringError("hist has too many moves");
int64_t startTurnIdx = (int64_t)hist.moveHistory.size() - turnsAgoToSnap;
sampleBuf.board = hist.getRecentBoard(turnsAgoToSnap);
if(startTurnIdx < hist.moveHistory.size())
sampleBuf.nextPla = hist.moveHistory[startTurnIdx].pla;
else
sampleBuf.nextPla = nextPla;
sampleBuf.moves.clear();
for(int64_t i = startTurnIdx; i<(int64_t)hist.moveHistory.size(); i++)
sampleBuf.moves.push_back(hist.moveHistory[i]);
sampleBuf.initialTurnNumber = hist.initialTurnNumber + startTurnIdx;
sampleBuf.hintLoc = Board::NULL_LOC;
sampleBuf.weight = 1.0;
if(flipIfPassOrWFirst) {
if(hist.hasBlackPassOrWhiteFirst())
sampleBuf = sampleBuf.getColorFlipped();
}
f(sampleBuf,hist,comments);
}
static uint64_t parseHex64(const string& str) {
assert(str.length() == 16);
uint64_t x = 0;
for(int i = 0; i<16; i++) {
x *= 16;
if(str[i] >= '0' && str[i] <= '9')
x += str[i] - '0';
else if(str[i] >= 'a' && str[i] <= 'f')
x += str[i] - 'a' + 10;
else if(str[i] >= 'A' && str[i] <= 'F')
x += str[i] - 'A' + 10;
else
assert(false);
}
return x;
}
set<Hash128> Sgf::readExcludes(const vector<string>& files) {
set<Hash128> excludeHashes;
for(const string& file: files) {
string excludeHashesFile = Global::trim(file);
if(excludeHashesFile.size() <= 0)
continue;
vector<string> hashes = FileUtils::readFileLines(excludeHashesFile,'\n');
for(const string& hashStr: hashes) {
string hash128 = Global::trim(Global::stripComments(hashStr));
if(hash128.length() <= 0)
continue;
if(hash128.length() != 32)
throw IOError("Could not parse hashpair in exclude hashes file: " + hash128);
uint64_t hash0 = parseHex64(hash128.substr(0,16));