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From 0a2aaee61cfc2888bc71f54ac5b165d248cbf5e8 Mon Sep 17 00:00:00 2001
From: Simon Hausmann <simon.hausmann@qt.io>
Date: Fri, 11 May 2018 15:39:04 +0200
Subject: [PATCH] Fix .import within .js files with CONFIG+=qtquickcompiler

When loading a .js file without QQC, we scan the sources and use the
ScriptDirectivesCollector to extract things like .pragma library or
.import ahead of time. That information is passed on to the compilation
unit generator for serialization. When compiling .js files ahead of
time, we also used the same collector, but we forgot to save the data
into the right location before serialization, so we essentially lost the
imports. This patch fixes that by centralizing this code into the
ScriptDirectivesCollector itself.

[ChangeLog][QtQml] Fix regression with .import in .js files not working
when using CONFIG+=qtquickcompiler.

Change-Id: I5413c14b1b8bd3114a997011534fe55cdb7634aa
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
---
 src/qml/compiler/qqmlirbuilder.cpp             | 14 +++++++-------
 src/qml/compiler/qqmlirbuilder_p.h             | 10 +++++-----
 src/qml/qml/qqmltypeloader.cpp                 |  5 +----
 tests/auto/qml/qmlcachegen/jsimport.qml        |  6 ++++++
 tests/auto/qml/qmlcachegen/library.js          |  4 ++++
 tests/auto/qml/qmlcachegen/qmlcachegen.pro     |  2 ++
 tests/auto/qml/qmlcachegen/script.js           |  6 ++++++
 tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp | 11 +++++++++++
 tools/qmlcachegen/qmlcachegen.cpp              |  2 +-
 9 files changed, 43 insertions(+), 17 deletions(-)
 create mode 100644 tests/auto/qml/qmlcachegen/jsimport.qml
 create mode 100644 tests/auto/qml/qmlcachegen/library.js
 create mode 100644 tests/auto/qml/qmlcachegen/script.js

diff --git a/src/qml/compiler/qqmlirbuilder.cpp b/src/qml/compiler/qqmlirbuilder.cpp
index 4a1b27d7a..1b07fda1f 100644
--- a/src/qml/compiler/qqmlirbuilder.cpp
+++ b/src/qml/compiler/qqmlirbuilder.cpp
@@ -322,16 +322,16 @@ Document::Document(bool debugMode)
 {
 }
 
-ScriptDirectivesCollector::ScriptDirectivesCollector(QQmlJS::Engine *engine, QV4::Compiler::JSUnitGenerator *unitGenerator)
-    : engine(engine)
-    , jsGenerator(unitGenerator)
-    , hasPragmaLibrary(false)
+ScriptDirectivesCollector::ScriptDirectivesCollector(Document *doc)
+    : document(doc)
+    , engine(&doc->jsParserEngine)
+    , jsGenerator(&doc->jsGenerator)
 {
 }
 
 void ScriptDirectivesCollector::pragmaLibrary()
 {
-    hasPragmaLibrary = true;
+    document->jsModule.unitFlags |= QV4::CompiledData::Unit::IsSharedLibrary;
 }
 
 void ScriptDirectivesCollector::importFile(const QString &jsfile, const QString &module, int lineNumber, int column)
@@ -342,7 +342,7 @@ void ScriptDirectivesCollector::importFile(const QString &jsfile, const QString
     import->qualifierIndex = jsGenerator->registerString(module);
     import->location.line = lineNumber;
     import->location.column = column;
-    imports << import;
+    document->imports << import;
 }
 
 void ScriptDirectivesCollector::importModule(const QString &uri, const QString &version, const QString &module, int lineNumber, int column)
@@ -358,7 +358,7 @@ void ScriptDirectivesCollector::importModule(const QString &uri, const QString &
     import->qualifierIndex = jsGenerator->registerString(module);
     import->location.line = lineNumber;
     import->location.column = column;
-    imports << import;
+    document->imports << import;
 }
 
 IRBuilder::IRBuilder(const QSet<QString> &illegalNames)
diff --git a/src/qml/compiler/qqmlirbuilder_p.h b/src/qml/compiler/qqmlirbuilder_p.h
index c2cf18e3c..689b232b1 100644
--- a/src/qml/compiler/qqmlirbuilder_p.h
+++ b/src/qml/compiler/qqmlirbuilder_p.h
@@ -462,14 +462,14 @@ struct Q_QML_PRIVATE_EXPORT Document
     static void removeScriptPragmas(QString &script);
 };
 
-struct Q_QML_PRIVATE_EXPORT ScriptDirectivesCollector : public QQmlJS::Directives
+class Q_QML_PRIVATE_EXPORT ScriptDirectivesCollector : public QQmlJS::Directives
 {
-    ScriptDirectivesCollector(QQmlJS::Engine *engine, QV4::Compiler::JSUnitGenerator *unitGenerator);
-
+    QmlIR::Document *document;
     QQmlJS::Engine *engine;
     QV4::Compiler::JSUnitGenerator *jsGenerator;
-    QList<const QV4::CompiledData::Import *> imports;
-    bool hasPragmaLibrary;
+
+public:
+    ScriptDirectivesCollector(QmlIR::Document *doc);
 
     void pragmaLibrary() override;
     void importFile(const QString &jsfile, const QString &module, int lineNumber, int column) override;
diff --git a/src/qml/qml/qqmltypeloader.cpp b/src/qml/qml/qqmltypeloader.cpp
index 9856a0be8..d7bd88235 100644
--- a/src/qml/qml/qqmltypeloader.cpp
+++ b/src/qml/qml/qqmltypeloader.cpp
@@ -3021,7 +3021,7 @@ void QQmlScriptBlob::dataReceived(const SourceCodeData &data)
         return;
     }
 
-    QmlIR::ScriptDirectivesCollector collector(&irUnit.jsParserEngine, &irUnit.jsGenerator);
+    QmlIR::ScriptDirectivesCollector collector(&irUnit);
 
     QList<QQmlError> errors;
     QQmlRefPointer<QV4::CompiledData::CompilationUnit> unit = QV4::Script::precompile(
@@ -3037,9 +3037,6 @@ void QQmlScriptBlob::dataReceived(const SourceCodeData &data)
         unit.adopt(new QV4::CompiledData::CompilationUnit);
     }
     irUnit.javaScriptCompilationUnit = unit;
-    irUnit.imports = collector.imports;
-    if (collector.hasPragmaLibrary)
-        irUnit.jsModule.unitFlags |= QV4::CompiledData::Unit::IsSharedLibrary;
 
     QmlIR::QmlUnitGenerator qmlGenerator;
     QV4::CompiledData::Unit *unitData = qmlGenerator.generate(irUnit);
diff --git a/tests/auto/qml/qmlcachegen/jsimport.qml b/tests/auto/qml/qmlcachegen/jsimport.qml
new file mode 100644
index 000000000..9c40878e6
--- /dev/null
+++ b/tests/auto/qml/qmlcachegen/jsimport.qml
@@ -0,0 +1,6 @@
+import QtQml 2.0
+import "script.js" as Script
+
+QtObject {
+    property int value: Script.getter()
+}
diff --git a/tests/auto/qml/qmlcachegen/library.js b/tests/auto/qml/qmlcachegen/library.js
new file mode 100644
index 000000000..51fb41dc2
--- /dev/null
+++ b/tests/auto/qml/qmlcachegen/library.js
@@ -0,0 +1,4 @@
+
+function getter() {
+    return 42;
+}
diff --git a/tests/auto/qml/qmlcachegen/qmlcachegen.pro b/tests/auto/qml/qmlcachegen/qmlcachegen.pro
index a2f963e8c..f62b95084 100644
--- a/tests/auto/qml/qmlcachegen/qmlcachegen.pro
+++ b/tests/auto/qml/qmlcachegen/qmlcachegen.pro
@@ -12,4 +12,6 @@ RESOURCES += versionchecks.qml
 
 RESOURCES += trickypaths.qrc
 
+RESOURCES += jsimport.qml script.js library.js
+
 QT += core-private qml-private testlib
diff --git a/tests/auto/qml/qmlcachegen/script.js b/tests/auto/qml/qmlcachegen/script.js
new file mode 100644
index 000000000..fa55f9069
--- /dev/null
+++ b/tests/auto/qml/qmlcachegen/script.js
@@ -0,0 +1,6 @@
+
+.import "library.js" as Library
+
+function getter() {
+    return Library.getter()
+}
diff --git a/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp b/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp
index 5c1692f08..c95a5a5d2 100644
--- a/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp
+++ b/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp
@@ -54,6 +54,8 @@ private slots:
     void workerScripts();
 
     void trickyPaths();
+
+    void scriptImport();
 };
 
 // A wrapper around QQmlComponent to ensure the temporary reference counts
@@ -416,6 +418,15 @@ void tst_qmlcachegen::trickyPaths()
     QCOMPARE(obj->property("success").toInt(), 42);
 }
 
+void tst_qmlcachegen::scriptImport()
+{
+    QQmlEngine engine;
+    CleanlyLoadingComponent component(&engine, QUrl("qrc:///jsimport.qml"));
+    QScopedPointer<QObject> obj(component.create());
+    QVERIFY(!obj.isNull());
+    QTRY_COMPARE(obj->property("value").toInt(), 42);
+}
+
 QTEST_GUILESS_MAIN(tst_qmlcachegen)
 
 #include "tst_qmlcachegen.moc"
diff --git a/tools/qmlcachegen/qmlcachegen.cpp b/tools/qmlcachegen/qmlcachegen.cpp
index 9c97ef769..adc9def59 100644
--- a/tools/qmlcachegen/qmlcachegen.cpp
+++ b/tools/qmlcachegen/qmlcachegen.cpp
@@ -261,7 +261,7 @@ static bool compileJSFile(const QString &inputFileName, const QString &inputFile
     }
 
     QQmlJS::Engine *engine = &irDocument.jsParserEngine;
-    QmlIR::ScriptDirectivesCollector directivesCollector(engine, &irDocument.jsGenerator);
+    QmlIR::ScriptDirectivesCollector directivesCollector(&irDocument);
     QQmlJS::Directives *oldDirs = engine->directives();
     engine->setDirectives(&directivesCollector);
 
-- 
2.17.1