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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "rulenode.h"
#include "artifact.h"
#include "buildgraph.h"
#include "buildgraphvisitor.h"
#include "productbuilddata.h"
#include "projectbuilddata.h"
#include "rulesapplicator.h"
#include "transformer.h"
#include <language/language.h>
#include <logging/logger.h>
#include <tools/persistence.h>
namespace qbs {
namespace Internal {
RuleNode::RuleNode()
{
}
RuleNode::~RuleNode()
{
}
void RuleNode::accept(BuildGraphVisitor *visitor)
{
if (visitor->visit(this))
acceptChildren(visitor);
}
QString RuleNode::toString() const
{
return QLatin1String("RULE ") + m_rule->toString();
}
void RuleNode::apply(const Logger &logger, const ArtifactSet &changedInputs,
ApplicationResult *result)
{
ArtifactSet allCompatibleInputs = currentInputArtifacts();
const ArtifactSet addedInputs = allCompatibleInputs - m_oldInputArtifacts;
const ArtifactSet removedInputs = m_oldInputArtifacts - allCompatibleInputs;
result->upToDate = changedInputs.isEmpty() && addedInputs.isEmpty() && removedInputs.isEmpty();
if (logger.traceEnabled()) {
logger.qbsTrace()
<< "[BG] consider " << (m_rule->isDynamic() ? "dynamic " : "")
<< (m_rule->multiplex ? "multiplex " : "")
<< "rule node " << m_rule->toString()
<< "\n\tchanged: " << changedInputs.toString()
<< "\n\tcompatible: " << allCompatibleInputs.toString()
<< "\n\tadded: " << addedInputs.toString()
<< "\n\tremoved: " << removedInputs.toString();
}
ArtifactSet inputs = changedInputs;
if (product->isMarkedForReapplication(m_rule)) {
QBS_CHECK(m_rule->multiplex);
result->upToDate = false;
product->unmarkForReapplication(m_rule);
if (logger.traceEnabled())
logger.qbsTrace() << "[BG] rule is marked for reapplication " << m_rule->toString();
inputs += allCompatibleInputs;
} else {
inputs += addedInputs;
}
if (result->upToDate)
return;
if (!removedInputs.isEmpty()) {
ArtifactSet outputArtifactsToRemove;
foreach (Artifact *artifact, removedInputs) {
foreach (Artifact *parent, ArtifactSet::fromNodeSet(artifact->parents)) {
if (!parent->transformer || parent->transformer->rule != m_rule
|| !parent->transformer->inputs.contains(artifact)) {
// TODO: turn two of the three conditions above into QBS_CHECKs
// parent must always have a transformer, because it's generated.
// QBS_CHECK(parent->transformer)
// artifact is a former input of m_rule and parent was created by m_rule
// the inputs of the transformer must contain artifact
// QBS_CHECK(parent->transformer->inputs.contains(artifact))
// parent was not created by our rule.
continue;
}
outputArtifactsToRemove += parent;
}
}
RulesApplicator::handleRemovedRuleOutputs(inputs, outputArtifactsToRemove, logger);
}
if (!inputs.isEmpty()) {
RulesApplicator applicator(product, logger);
result->createdNodes = applicator.applyRuleInEvaluationContext(m_rule, inputs);
m_oldInputArtifacts.unite(inputs);
}
}
void RuleNode::load(PersistentPool &pool)
{
BuildGraphNode::load(pool);
m_rule = pool.idLoadS<Rule>();
pool.loadContainer(m_oldInputArtifacts);
}
void RuleNode::store(PersistentPool &pool) const
{
BuildGraphNode::store(pool);
pool.store(m_rule);
pool.storeContainer(m_oldInputArtifacts);
}
ArtifactSet RuleNode::currentInputArtifacts() const
{
ArtifactSet s;
foreach (const FileTag &t, m_rule->inputs) {
foreach (Artifact *artifact, product->lookupArtifactsByFileTag(t)) {
if (artifact->transformer && artifact->transformer->rule == m_rule) {
// Do not add compatible artifacts as inputs that were created by this rule.
// This can e.g. happen for the ["cpp", "hpp"] -> ["hpp", "cpp", "unmocable"] rule.
continue;
}
s += artifact;
}
}
foreach (const ResolvedProductConstPtr &dep, product->dependencies) {
if (!dep->buildData)
continue;
ArtifactSet artifactsToCheck;
foreach (Artifact *targetArtifact, dep->targetArtifacts())
artifactsToCheck += targetArtifact->transformer->outputs;
foreach (Artifact *artifact, artifactsToCheck) {
if (artifact->fileTags.matches(m_rule->usings))
s += artifact;
}
}
return s;
}
} // namespace Internal
} // namespace qbs
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