support transformers with an unknown number of outputs

To support different types of nodes in the build graph, we introduce
the base class BuildGraphNode. Artifact now derives from BuildGraphNode.
A RuleNode class is introduced that represents a rule in the build graph.
Rules are applied in the build phase and not in a pre-build phase
anymore.
The handling of moc has been revisited. The fixed automoc pre-build
phase is no more.

This is the squashed merge of a feature branch.

Task-number: QBS-370
Change-Id: If27cdc51cba8c9542e4282c2caa456faa723aeff
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/lib/corelib/buildgraph/transformer.h b/src/lib/corelib/buildgraph/transformer.h
index 3ef30cc29..ee9ee4002 100644
--- a/src/lib/corelib/buildgraph/transformer.h
+++ b/src/lib/corelib/buildgraph/transformer.h
@@ -56,7 +56,7 @@ public:
     ArtifactSet inputs; // Subset of "children of all outputs".
     ArtifactSet outputs;
     RuleConstPtr rule;
-    QList<AbstractCommand *> commands;
+    QList<AbstractCommandPtr> commands;
     PropertyList propertiesRequestedInPrepareScript;
     PropertyList propertiesRequestedInCommands;
     QHash<QString, PropertyList> propertiesRequestedFromArtifactInPrepareScript;
@@ -69,7 +69,9 @@ public:
                                            const QString &defaultModuleName);
 
     ResolvedProductPtr product() const;
-    void setupInputs(QScriptEngine *scriptEngine, QScriptValue targetScriptValue);
+    static void setupInputs(QScriptValue targetScriptValue, const ArtifactSet &inputs,
+            const QString &defaultModuleName);
+    void setupInputs(QScriptValue targetScriptValue);
     void setupOutputs(QScriptEngine *scriptEngine, QScriptValue targetScriptValue);
     void createCommands(const ScriptFunctionConstPtr &script,
                         const RulesEvaluationContextPtr &evalContext, const QScriptValueList &args);