API: Allow synchronous retrieval of build graph data

This is needed to import builds into Qt Creator.

Task-number: QBS-1059
Change-Id: I8a1b226d3f0044c7e90a61d195796a1e8be9a9de
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/lib/corelib/buildgraph/buildgraphloader.cpp b/src/lib/corelib/buildgraph/buildgraphloader.cpp
index 1120cea98..6b094164a 100644
--- a/src/lib/corelib/buildgraph/buildgraphloader.cpp
+++ b/src/lib/corelib/buildgraph/buildgraphloader.cpp
@@ -54,6 +54,7 @@
 #include <language/qualifiedid.h>
 #include <language/resolvedfilecontext.h>
 #include <logging/translator.h>
+#include <tools/buildgraphlocker.h>
 #include <tools/fileinfo.h>
 #include <tools/persistence.h>
 #include <tools/profiling.h>
@@ -138,6 +139,21 @@ BuildGraphLoadResult BuildGraphLoader::load(const TopLevelProjectPtr &existingPr
     return m_result;
 }
 
+TopLevelProjectConstPtr BuildGraphLoader::loadProject(const QString &bgFilePath)
+{
+    class LogSink : public ILogSink {
+        void doPrintMessage(LoggerLevel, const QString &, const QString &) override { }
+    } dummySink;
+    Logger dummyLogger(&dummySink);
+    BuildGraphLocker bgLocker(bgFilePath, dummyLogger, false, nullptr);
+    PersistentPool pool(dummyLogger);
+    pool.load(bgFilePath);
+    const TopLevelProjectPtr project = TopLevelProject::create();
+    project->load(pool);
+    project->setBuildConfiguration(pool.headData().projectConfig);
+    return project;
+}
+
 void BuildGraphLoader::loadBuildGraphFromDisk()
 {
     const QString projectId = TopLevelProject::deriveId(m_parameters.finalBuildConfigurationTree());