shiboken: Add file snippet handling to native-to-target and add-conversion

Task-number: PYSIDE-834
Change-Id: I3daad497ed32a56c05c8dc2b06271e243d579b99
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

3 files changed, 25 insertions, 5 deletions

diff --git a/sources/shiboken2/ApiExtractor/doc/typesystem_conversionrule.rst b/sources/shiboken2/ApiExtractor/doc/typesystem_conversionrule.rst
index c62d5bbf6..27e7a72de 100644
--- a/sources/shiboken2/ApiExtractor/doc/typesystem_conversionrule.rst
+++ b/sources/shiboken2/ApiExtractor/doc/typesystem_conversionrule.rst
@@ -63,6 +63,7 @@ native-to-target
     **%INTYPE_#**, should be replaced by the types used in the container template
     (e.g. **%INTYPE_0** correspondes to **"int"** for **"list<int>"**).
 
+    The ``file`` and ``snippet`` attributes are also supported (see :ref:`inject-code` nodes).
 
 .. _target-to-native:
 
@@ -111,3 +112,5 @@ add-conversion
    **%in**, **%out**, **%INTYPE**, **%INTYPE_#**, and **%OUTTYPE**, must be provided by
    the generator as in the ``native-to-target`` tag.
 
+   The ``file`` and ``snippet`` attributes are also supported (see :ref:`inject-code` nodes).
+
diff --git a/sources/shiboken2/ApiExtractor/typesystem.cpp b/sources/shiboken2/ApiExtractor/typesystem.cpp
index aa4147d76..e82221a40 100644
--- a/sources/shiboken2/ApiExtractor/typesystem.cpp
+++ b/sources/shiboken2/ApiExtractor/typesystem.cpp
@@ -1632,6 +1632,21 @@ bool Handler::parseCustomConversion(const QXmlStreamReader &,
     return true;
 }
 
+bool Handler::parseNativeToTarget(const QXmlStreamReader &,
+                                  const StackElement &topElement,
+                                  QXmlStreamAttributes *attributes)
+{
+    if (topElement.type != StackElement::ConversionRule) {
+        m_error = QLatin1String("Native to Target conversion code can only be specified for custom conversion rules.");
+        return false;
+    }
+    CodeSnip snip;
+    if (!readFileSnippet(attributes, &snip))
+        return false;
+    m_contextStack.top()->codeSnips.append(snip);
+    return true;
+}
+
 bool Handler::parseAddConversion(const QXmlStreamReader &,
                                  const StackElement &topElement,
                                  QXmlStreamAttributes *attributes)
@@ -1642,6 +1657,9 @@ bool Handler::parseAddConversion(const QXmlStreamReader &,
     }
     QString sourceTypeName;
     QString typeCheck;
+    CodeSnip snip;
+    if (!readFileSnippet(attributes, &snip))
+        return false;
     for (int i = attributes->size() - 1; i >= 0; --i) {
         const QStringRef name = attributes->at(i).qualifiedName();
         if (name == QLatin1String("type"))
@@ -1654,7 +1672,7 @@ bool Handler::parseAddConversion(const QXmlStreamReader &,
         return false;
     }
     m_current->entry->customConversion()->addTargetToNativeConversion(sourceTypeName, typeCheck);
-    m_contextStack.top()->codeSnips << CodeSnip();
+    m_contextStack.top()->codeSnips.append(snip);
     return true;
 }
 
@@ -2670,11 +2688,8 @@ bool Handler::startElement(const QXmlStreamReader &reader)
                 return false;
             break;
         case StackElement::NativeToTarget:
-            if (topElement.type != StackElement::ConversionRule) {
-                m_error = QLatin1String("Native to Target conversion code can only be specified for custom conversion rules.");
+            if (!parseNativeToTarget(reader, topElement, &attributes))
                 return false;
-            }
-            m_contextStack.top()->codeSnips << CodeSnip();
             break;
         case StackElement::TargetToNative: {
             if (topElement.type != StackElement::ConversionRule) {
diff --git a/sources/shiboken2/ApiExtractor/typesystem_p.h b/sources/shiboken2/ApiExtractor/typesystem_p.h
index 3ebdf47d7..a617110d6 100644
--- a/sources/shiboken2/ApiExtractor/typesystem_p.h
+++ b/sources/shiboken2/ApiExtractor/typesystem_p.h
@@ -198,6 +198,8 @@ private:
                                QXmlStreamAttributes *);
     bool parseAddConversion(const QXmlStreamReader &, const StackElement &topElement,
                             QXmlStreamAttributes *);
+    bool parseNativeToTarget(const QXmlStreamReader &, const StackElement &topElement,
+                             QXmlStreamAttributes *attributes);
     bool parseModifyArgument(const QXmlStreamReader &, const StackElement &topElement,
                              QXmlStreamAttributes *attributes);
     bool parseNoNullPointer(const QXmlStreamReader &, const StackElement &topElement,