uic: Add python

- Add command line option
- Add import (include) handling
- Add language helpers like streamable classes for Function definition,
  object instantiation
- Implement header comment formatting

Task-number: PYSIDE-797
Change-Id: I15041ab16504ea159f6665781a829cd548585af1
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

1 files changed, 118 insertions, 2 deletions

diff --git a/src/tools/uic/shared/language.cpp b/src/tools/uic/shared/language.cpp
index d0491b74e3..d05f3c935f 100644
--- a/src/tools/uic/shared/language.cpp
+++ b/src/tools/uic/shared/language.cpp
@@ -33,6 +33,48 @@
 namespace language {
 
 static Encoding encoding = Encoding::Utf8;
+static Language _language = Language::Cpp;
+
+Language language() { return _language; }
+
+void setLanguage(Language l)
+{
+    _language = l;
+    switch (_language) {
+    case Language::Cpp:
+        derefPointer = QLatin1String("->");
+        nullPtr = QLatin1String("nullptr");
+        operatorNew = QLatin1String("new ");
+        qtQualifier = QLatin1String("Qt::");
+        qualifier = QLatin1String("::");
+        self = QLatin1String("");  // for testing: change to "this->";
+        eol = QLatin1String(";\n");
+        encoding = Encoding::Utf8;
+        break;
+    case Language::Python:
+        derefPointer = QLatin1String(".");
+        nullPtr = QLatin1String("None");
+        operatorNew = QLatin1String("");
+        qtQualifier = QLatin1String("Qt.");
+        qualifier = QLatin1String(".");
+        self = QLatin1String("self.");
+        eol = QLatin1String("\n");
+        encoding = Encoding::Unicode;
+        break;
+    }
+}
+
+QString derefPointer;
+QString nullPtr;
+QString operatorNew;
+QString qtQualifier;
+QString qualifier;
+QString self;
+QString eol;
+
+QString cppQualifier = QLatin1String("::");
+QString cppTrue = QLatin1String("true");
+QString cppFalse = QLatin1String("false");
 
 QTextStream &operator<<(QTextStream &str, const qtConfig &c)
 {
@@ -71,6 +113,13 @@ const char *lookupEnum(const EnumLookup(&array)[N], int value, int defaultIndex
     return defaultValue;
 }
 
+QString fixClassName(QString className)
+{
+    if (language() == Language::Python)
+        className.replace(cppQualifier, QLatin1String("_"));
+    return className;
+}
+
 const char *toolbarArea(int v)
 {
     static const EnumLookup toolBarAreas[] =
@@ -250,12 +299,12 @@ void _formatString(QTextStream &str, const QString &value, const QString &indent
     switch (encoding) {
     // Special characters as 3 digit octal escapes (u8"\303\234mlaut")
     case Encoding::Utf8: {
-        if (qString)
+        if (qString && _language == Language::Cpp)
             str << "QString::fromUtf8(";
         const QByteArray utf8 = value.toUtf8();
         formatStringSequence<Encoding::Utf8>(str, utf8.cbegin(), utf8.cend(), indent,
                                              8, 3);
-        if (qString)
+        if (qString && _language == Language::Cpp)
             str << ')';
     }
         break;
@@ -268,4 +317,71 @@ void _formatString(QTextStream &str, const QString &value, const QString &indent
     }
 }
 
+QTextStream &operator<<(QTextStream &str, const repeat &r)
+{
+    for (int i = 0; i < r.m_count; ++i)
+        str << r.m_char;
+    return str;
+}
+
+startFunctionDefinition1::startFunctionDefinition1(const char *name, const QString &parameterType,
+                                                   const QString &parameterName,
+                                                   const QString &indent,
+                                                   const char *returnType) :
+    m_name(name), m_parameterType(parameterType), m_parameterName(parameterName),
+    m_indent(indent), m_return(returnType)
+{
+}
+
+QTextStream &operator<<(QTextStream &str, const startFunctionDefinition1 &f)
+{
+    switch (language()) {
+    case Language::Cpp:
+        str << (f.m_return ? f.m_return : "void") << ' ' << f.m_name << '('
+            << f.m_parameterType;
+        if (f.m_parameterType.cend()->isLetter())
+            str << ' ';
+        str << f.m_parameterName << ')' << '\n' << f.m_indent << "{\n";
+        break;
+    case Language::Python:
+        str << "def " << f.m_name << "(self, " << f.m_parameterName << "):\n";
+        break;
+    }
+    return str;
+}
+
+endFunctionDefinition::endFunctionDefinition(const char *name) : m_name(name)
+{
+}
+
+QTextStream &operator<<(QTextStream &str, const endFunctionDefinition &f)
+{
+    switch (language()) {
+    case Language::Cpp:
+        str << "} // " << f.m_name << "\n\n";
+        break;
+    case Language::Python:
+        str << "# " << f.m_name << "\n\n";
+        break;
+    }
+    return str;
+}
+
+void _formatStackVariable(QTextStream &str, const char *className, QStringView varName,
+                          bool withInitParameters)
+{
+    switch (language()) {
+    case Language::Cpp:
+        str << className << ' ' << varName;
+        if (withInitParameters)
+            str << '(';
+        break;
+    case Language::Python:
+        str << varName << " = " << className << '(';
+        if (!withInitParameters)
+            str << ')';
+        break;
+    }
+}
+
 } // namespace language