API: Make transformer data available

Expose transformer information such as the input and output lists
and the associated commands to interested parties. In particular,
generators might have a need for that.

Change-Id: I18f60e3a6fcb7792638b5786dde50e8722d7f417
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

3 files changed, 80 insertions, 0 deletions

diff --git a/tests/auto/api/testdata/transformer-data/transformer-data.qbs b/tests/auto/api/testdata/transformer-data/transformer-data.qbs
new file mode 100644
index 000000000..b24deebe5
--- /dev/null
+++ b/tests/auto/api/testdata/transformer-data/transformer-data.qbs
@@ -0,0 +1,36 @@
+import qbs
+import qbs.File
+import qbs.TextFile
+
+Product {
+    type: ["theType"]
+    Rule {
+        multiplex: true
+        Artifact {
+            filePath: "artifact1"
+            fileTags: ["type1"]
+        }
+        prepare: {
+            var cmd = new JavaScriptCommand();
+            cmd.description = "Creating " + output.fileName;
+            cmd.sourceCode = function() {
+                var f = new TextFile(output.filePath, TextFile.WriteOnly);
+                f.close();
+            };
+            return [cmd];
+        }
+    }
+    Rule {
+        inputs: ["type1"]
+        Artifact {
+            filePath: "artifact2"
+            fileTags: ["theType"]
+        }
+        prepare: {
+            var cmd = new JavaScriptCommand();
+            cmd.description = "Creating " + output.fileName;
+            cmd.sourceCode = function() { File.copy(input.filePath, output.filePath); };
+            return [cmd];
+        }
+    }
+}
diff --git a/tests/auto/api/tst_api.cpp b/tests/auto/api/tst_api.cpp
index 4fb2d8a3a..ae2b3b684 100644
--- a/tests/auto/api/tst_api.cpp
+++ b/tests/auto/api/tst_api.cpp
@@ -2816,6 +2816,49 @@ void TestApi::trackRemoveQObjectHeader()
     QVERIFY2(isAboutUndefinedSymbols(receiver.output), qPrintable(receiver.output));
 }
 
+void TestApi::transformerData()
+{
+    const qbs::SetupProjectParameters params
+            = defaultSetupParameters("transformer-data/transformer-data.qbs");
+    const std::unique_ptr<qbs::SetupProjectJob> setupJob(qbs::Project().setupProject(params,
+                                                                                    m_logSink, 0));
+    QVERIFY(waitForFinished(setupJob.get()));
+    QVERIFY2(!setupJob->error().hasError(), qPrintable(setupJob->error().toString()));
+    const qbs::Project project = setupJob->project();
+    const std::unique_ptr<qbs::BuildJob> buildJob(project.buildAllProducts(qbs::BuildOptions()));
+    QVERIFY(waitForFinished(buildJob.get()));
+    QVERIFY2(!buildJob->error().hasError(), qPrintable(buildJob->error().toString()));
+    qbs::ErrorInfo error;
+    const qbs::ProjectTransformerData projectTData = project.transformerData(&error);
+    QVERIFY2(!error.hasError(), qPrintable(error.toString()));
+    QCOMPARE(projectTData.size(), 1);
+    const qbs::ProductTransformerData productTData = projectTData.first().second;
+    QCOMPARE(productTData.size(), 2);
+    bool firstTransformerFound = false;
+    bool secondTransformerFound = false;
+    for (const qbs::TransformerData &tData : productTData) {
+        if (tData.inputs().empty()) {
+            firstTransformerFound = true;
+            QCOMPARE(tData.outputs().size(), 1);
+            QCOMPARE(QFileInfo(tData.outputs().first().filePath()).fileName(),
+                     QString("artifact1"));
+            QCOMPARE(tData.commands().size(), 1);
+            QCOMPARE(tData.commands().first().type(), qbs::RuleCommand::JavaScriptCommandType);
+        } else {
+            secondTransformerFound = true;
+            QCOMPARE(tData.inputs().size(), 1);
+            QCOMPARE(QFileInfo(tData.inputs().first().filePath()).fileName(), QString("artifact1"));
+            QCOMPARE(tData.outputs().size(), 1);
+            QCOMPARE(QFileInfo(tData.outputs().first().filePath()).fileName(),
+                     QString("artifact2"));
+            QCOMPARE(tData.commands().size(), 1);
+            QCOMPARE(tData.commands().first().type(), qbs::RuleCommand::JavaScriptCommandType);
+        }
+    }
+    QVERIFY(firstTransformerFound);
+    QVERIFY(secondTransformerFound);
+}
+
 void TestApi::transformers()
 {
     const qbs::ErrorInfo errorInfo = doBuildProject("transformers/transformers.qbs");
diff --git a/tests/auto/api/tst_api.h b/tests/auto/api/tst_api.h
index 3f5b88715..26f6655ad 100644
--- a/tests/auto/api/tst_api.h
+++ b/tests/auto/api/tst_api.h
@@ -142,6 +142,7 @@ private slots:
     void toolInModule();
     void trackAddQObjectHeader();
     void trackRemoveQObjectHeader();
+    void transformerData();
     void transformers();
     void typeChange();
     void uic();