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/*
SPDX-FileCopyrightText: 2007 David Nolden <david.nolden.kdevelop@art-master.de>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "dumpdotgraph.h"
#include "ducontext.h"
#include "topducontext.h"
#include "declaration.h"
#include "duchainpointer.h"
#include "parsingenvironment.h"
#include "identifier.h"
#include "functiondefinition.h"
namespace KDevelop {
QString shortLabel(KDevelop::DUContext* context)
{
return QStringLiteral("q%1").arg(( quint64 )context);
}
QString shortLabel(KDevelop::Declaration* declaration)
{
return QStringLiteral("q%1").arg(( quint64 )declaration);
}
QString rangeToString(const KTextEditor::Range& r)
{
return QStringLiteral("%1:%2->%3:%4").arg(r.start().line()).arg(r.start().column()).arg(r.end().line()).arg(
r.end().column());
}
class DumpDotGraphPrivate
{
public:
QString dotGraphInternal(KDevelop::DUContext* contex, bool isMaster, bool shortened);
void addDeclaration(QTextStream& stream, Declaration* decl);
QMap<QUrl, QString> m_hadVersions;
QMap<KDevelop::DUChainBase*, bool> m_hadObjects;
TopDUContext* m_topContext;
};
QString DumpDotGraph::dotGraph(KDevelop::DUContext* context, bool shortened)
{
Q_D(DumpDotGraph);
d->m_hadObjects.clear();
d->m_hadVersions.clear();
d->m_topContext = context->topContext(); ///@todo maybe get this as a parameter
return d->dotGraphInternal(context, true, shortened);
}
DumpDotGraph::DumpDotGraph()
: d_ptr(new DumpDotGraphPrivate())
{
}
DumpDotGraph::~DumpDotGraph() = default;
void DumpDotGraphPrivate::addDeclaration(QTextStream& stream, Declaration* dec)
{
if (m_hadObjects.contains(dec))
return;
m_hadObjects[dec] = true;
Declaration* declarationForDefinition = nullptr;
if (dynamic_cast<FunctionDefinition*>(dec))
declarationForDefinition = static_cast<FunctionDefinition*>(dec)->declaration(m_topContext);
if (!declarationForDefinition) {
//Declaration
stream << shortLabel(dec) <<
"[shape=box, label=\"" <<
dec->toString() << " [" <<
dec->qualifiedIdentifier().toString() << "]" << " " <<
rangeToString(dec->range().castToSimpleRange()) << "\"];\n";
stream << shortLabel(dec->context()) << " -> " << shortLabel(dec) << "[color=green];\n";
if (dec->internalContext())
stream << shortLabel(dec) << " -> " << shortLabel(dec->internalContext()) <<
"[label=\"internal\", color=blue];\n";
} else {
//Definition
stream << shortLabel(dec) << "[shape=regular,color=yellow,label=\"" << declarationForDefinition->toString() <<
" " << rangeToString(dec->range().castToSimpleRange()) << "\"];\n";
stream << shortLabel(dec->context()) << " -> " << shortLabel(dec) << ";\n";
stream << shortLabel(dec) << " -> " << shortLabel(declarationForDefinition) <<
"[label=\"defines\",color=green];\n";
addDeclaration(stream, declarationForDefinition);
if (dec->internalContext())
stream << shortLabel(dec) << " -> " << shortLabel(dec->internalContext()) <<
"[label=\"internal\", color=blue];\n";
}
}
QString DumpDotGraphPrivate::dotGraphInternal(KDevelop::DUContext* context, bool isMaster, bool shortened)
{
if (m_hadObjects.contains(context))
return QString();
m_hadObjects[context] = true;
QTextStream stream;
QString ret;
stream.setString(&ret, QIODevice::WriteOnly);
if (isMaster)
stream << "Digraph chain {\n";
QString shape = QStringLiteral("parallelogram");
//QString shape = "box";
QString label = QStringLiteral("unknown");
if (dynamic_cast<TopDUContext*>(context)) {
auto* topCtx = static_cast<TopDUContext*>(context);
if (topCtx->parsingEnvironmentFile()) {
QUrl url = topCtx->parsingEnvironmentFile()->url().toUrl();
const QString fileName = url.fileName();
QString file = url.toDisplayString(QUrl::PreferLocalFile);
if (topCtx->parsingEnvironmentFile() && topCtx->parsingEnvironmentFile()->isProxyContext())
url.setPath(url.path() + QLatin1String("/_[proxy]_"));
//Find the context this one is derived from. If there is one, connect it with a line, and shorten the url.
if (m_hadVersions.contains(url)) {
stream << shortLabel(context) << " -> " << m_hadVersions[url] << "[color=blue,label=\"version\"];\n";
file = fileName;
} else {
m_hadVersions[url] = shortLabel(context);
}
label = file;
if (topCtx->importers().count() != 0)
label += QStringLiteral(" imported by %1").arg(topCtx->importers().count());
} else {
label = QStringLiteral("unknown file");
}
if (topCtx->parsingEnvironmentFile() && topCtx->parsingEnvironmentFile()->isProxyContext())
label = QLatin1String("Proxy-context ") + label;
} else {
label = /*"context " + */ context->localScopeIdentifier().toString();
label += QLatin1Char(' ') + rangeToString(context->range().castToSimpleRange());
}
//label = QStringLiteral("%1 ").arg((size_t)context) + label;
if (isMaster && !dynamic_cast<TopDUContext*>(context)) {
//Also draw contexts that import this one
const auto importers = context->importers();
for (DUContext* ctx : importers) {
stream << dotGraphInternal(ctx, false, true);
}
}
const auto importedParentContexts = context->importedParentContexts();
for (const DUContext::Import& parent : importedParentContexts) {
if (parent.context(m_topContext)) {
stream << dotGraphInternal(parent.context(m_topContext), false, true);
QString label = QStringLiteral("imports");
if ((!dynamic_cast<TopDUContext*>(parent.context(m_topContext)) || !dynamic_cast<TopDUContext*>(context)) &&
!(parent.context(m_topContext)->url() == context->url())) {
label += QLatin1String(" from ") + parent.context(m_topContext)->url().toUrl().fileName()
+ QLatin1String(" to ") + context->url().toUrl().fileName();
}
stream << shortLabel(context) << QLatin1String(" -> ") << shortLabel(parent.context(m_topContext)) <<
QLatin1String("[style=dotted,label=\"") << label << QLatin1String("\"];\n");
}
}
const auto childContexts = context->childContexts();
if (!childContexts.isEmpty()) {
label += QStringLiteral(", %1 C.").arg(childContexts.count());
}
if (!shortened) {
for (DUContext* child : childContexts) {
stream << dotGraphInternal(child, false, false);
stream << shortLabel(context) << QLatin1String(" -> ") << shortLabel(child) << QLatin1String(
"[style=dotted,color=green];\n");
}
}
const auto localDeclarations = context->localDeclarations();
if (!localDeclarations.isEmpty()) {
label += QStringLiteral(", %1 D.").arg(localDeclarations.count());
}
if (!shortened) {
for (Declaration* dec : localDeclarations) {
addDeclaration(stream, dec);
}
}
if (context->owner()) {
addDeclaration(stream, context->owner());
}
stream << shortLabel(context) << "[shape=" << shape << ",label=\"" << label << "\"" <<
(isMaster ? QLatin1String("color=red") : QLatin1String("color=blue")) << "];\n";
if (isMaster)
stream << "}\n";
return ret;
}
}
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