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/******************************************************************************
*
* Copyright (C) 1997-2020 by Dimitri van Heesch.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation under the terms of the GNU General Public License is hereby
* granted. No representations are made about the suitability of this software
* for any purpose. It is provided "as is" without express or implied warranty.
* See the GNU General Public License for more details.
*
* Documents produced by Doxygen are derivative works derived from the
* input used in their production; they are not affected by this license.
*
*/
#include "dotcallgraph.h"
#include "dotnode.h"
#include "memberlist.h"
#include "config.h"
#include "util.h"
#define HIDE_SCOPE_NAMES Config_getBool(HIDE_SCOPE_NAMES)
#define DOT_GRAPH_MAX_NODES Config_getInt(DOT_GRAPH_MAX_NODES)
#define MAX_DOT_GRAPH_DEPTH Config_getInt(MAX_DOT_GRAPH_DEPTH)
static QCString getUniqueId(const MemberDef *md)
{
QCString result = md->getReference()+"$"+
md->getOutputFileBase()+"#"+
md->anchor();
return result;
}
void DotCallGraph::buildGraph(DotNode *n,const MemberDef *md,int distance)
{
auto refs = m_inverse ? md->getReferencedByMembers() : md->getReferencesMembers();
for (const auto &rmd : refs)
{
if (rmd->showInCallGraph())
{
QCString uniqueId = getUniqueId(rmd);
DotNode *bn = m_usedNodes->find(uniqueId);
if (bn) // file is already a node in the graph
{
n->addChild(bn,0,0,0);
bn->addParent(n);
bn->setDistance(distance);
}
else
{
QCString name;
if (HIDE_SCOPE_NAMES)
{
name = rmd->getOuterScope()==m_scope ?
rmd->name() : rmd->qualifiedName();
}
else
{
name = rmd->qualifiedName();
}
QCString tooltip = rmd->briefDescriptionAsTooltip();
bn = new DotNode(
getNextNodeNumber(),
linkToText(rmd->getLanguage(),name,FALSE),
tooltip,
uniqueId,
0 //distance
);
n->addChild(bn,0,0,0);
bn->addParent(n);
bn->setDistance(distance);
m_usedNodes->insert(uniqueId,bn);
buildGraph(bn,rmd,distance+1);
}
}
}
}
void DotCallGraph::determineVisibleNodes(QList<DotNode> &queue, int &maxNodes)
{
while (queue.count()>0 && maxNodes>0)
{
DotNode *n = queue.take(0);
if (!n->isVisible() && n->distance()<=MAX_DOT_GRAPH_DEPTH) // not yet processed
{
n->markAsVisible();
maxNodes--;
// add direct children
if (n->children())
{
QListIterator<DotNode> li(*n->children());
DotNode *dn;
for (li.toFirst();(dn=li.current());++li)
{
queue.append(dn);
}
}
}
}
}
void DotCallGraph::determineTruncatedNodes(QList<DotNode> &queue)
{
while (queue.count()>0)
{
DotNode *n = queue.take(0);
if (n->isVisible() && n->isTruncated()==DotNode::Unknown)
{
bool truncated = FALSE;
if (n->children())
{
QListIterator<DotNode> li(*n->children());
const DotNode *dn;
for (li.toFirst();(dn=li.current());++li)
{
if (!dn->isVisible())
truncated = TRUE;
else
queue.append(dn);
}
}
n->markAsTruncated(truncated);
}
}
}
DotCallGraph::DotCallGraph(const MemberDef *md,bool inverse)
{
m_inverse = inverse;
m_diskName = md->getOutputFileBase()+"_"+md->anchor();
m_scope = md->getOuterScope();
QCString uniqueId = getUniqueId(md);
QCString name;
if (HIDE_SCOPE_NAMES)
{
name = md->name();
}
else
{
name = md->qualifiedName();
}
QCString tooltip = md->briefDescriptionAsTooltip();
m_startNode = new DotNode(getNextNodeNumber(),
linkToText(md->getLanguage(),name,FALSE),
tooltip,
uniqueId.data(),
TRUE // root node
);
m_startNode->setDistance(0);
m_usedNodes = new QDict<DotNode>(1009);
m_usedNodes->insert(uniqueId,m_startNode);
buildGraph(m_startNode,md,1);
int maxNodes = DOT_GRAPH_MAX_NODES;
QList<DotNode> openNodeQueue;
openNodeQueue.append(m_startNode);
determineVisibleNodes(openNodeQueue,maxNodes);
openNodeQueue.clear();
openNodeQueue.append(m_startNode);
determineTruncatedNodes(openNodeQueue);
}
DotCallGraph::~DotCallGraph()
{
DotNode::deleteNodes(m_startNode);
delete m_usedNodes;
}
QCString DotCallGraph::getBaseName() const
{
return m_diskName + (m_inverse ? "_icgraph" : "_cgraph");
}
void DotCallGraph::computeTheGraph()
{
computeGraph(
m_startNode,
CallGraph,
m_graphFormat,
m_inverse ? "RL" : "LR",
FALSE,
m_inverse,
m_startNode->label(),
m_theGraph);
}
QCString DotCallGraph::getMapLabel() const
{
return m_baseName;
}
QCString DotCallGraph::writeGraph(
FTextStream &out,
GraphOutputFormat graphFormat,
EmbeddedOutputFormat textFormat,
const char *path,
const char *fileName,
const char *relPath,bool generateImageMap,
int graphId)
{
return DotGraph::writeGraph(out, graphFormat, textFormat, path, fileName, relPath, generateImageMap, graphId);
}
bool DotCallGraph::isTrivial() const
{
return m_startNode->children()==0;
}
bool DotCallGraph::isTooBig() const
{
return numNodes()>=DOT_GRAPH_MAX_NODES;
}
int DotCallGraph::numNodes() const
{
return m_startNode->children() ? m_startNode->children()->count() : 0;
}
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