private void HandleTopLevelStatement(PythonScript script,
Statement statement,
StringBuilder declarations,
Dictionary <string, GuessedType> declaredFields)
{
if (statement.Start.Line > _currentLine)
{
if (TryGetComments(script, _currentLine, statement.Start.Line, out var comments))
{
declarations.AppendLine(comments);
}
}
_currentLine = statement.End.Line;
// Top level statements need special treatment
if (statement is FunctionDefinition functionDefinition)
{
HandleFunctionDeclaration(
script,
declarations,
declaredFields,
functionDefinition);
}
else if (statement is AssignmentStatement assignmentStatement)
{
// We have to guess the type of the right hand side to continue
var rightExpression = assignmentStatement.Right;
foreach (var leftExpression in assignmentStatement.Left)
{
if (!(leftExpression is NameExpression nameExpression))
{
continue;
}
// Assignments to __all__ can be ignored. We could use them to know what is public,
// But it applies to a miniscule set of modules anyway
if (nameExpression.Name == "__all__")
{
continue;
}
string managedFieldType;
GuessedType fieldType;
var expressionConverter = new ExpressionConverter(script, _typings, _modules);
if (rightExpression is DictionaryExpression dictionaryExpression)
{
expressionConverter.GetDictionaryTypes(dictionaryExpression,
out _, out _, out managedFieldType);
fieldType = GuessedType.Unknown;
}
else if (rightExpression is ListExpression listExpression)
{
expressionConverter.GetListType(listExpression,
out var valueType, out managedFieldType);
if (valueType == GuessedType.Object)
{
fieldType = GuessedType.ObjectList;
}
else
{
fieldType = GuessedType.UnknownList;
}
}
else
{
fieldType = expressionConverter.GetExpressionType(rightExpression);
managedFieldType = TypeMapping.GuessManagedType(fieldType);
}
declarations.Append("private static readonly ");
declarations.Append(managedFieldType);
declarations.Append(' ');
declarations.Append(nameExpression.Name);
declarations.Append(" = ");
declarations.Append(ConvertExpression(script, rightExpression));
declarations.AppendLine(";");
declaredFields[nameExpression.Name] = fieldType;
}
}
else if (statement is ExpressionStatement expressionStatement)
{
if (expressionStatement.Expression is ConstantExpression constantExpression)
{
// Top level expressions of type string are documentation statements
var value = constantExpression.Value;
if (value is string stringValue)
{
foreach (var commentLine in stringValue.Split("\n"))
{
declarations.AppendLine("//" + commentLine);
}
}
else
{
Debugger.Break();
}
}
else
{
declarations.AppendLine("FIXME");
var exprConverter = new ExpressionConverter(script, _typings, _modules);
exprConverter.AddVariables(declaredFields); // Ensure that globally defined fields are known
statement.Walk(exprConverter);
declarations.Append(exprConverter.Result.ToString());
}
}
else if (statement is FromImportStatement || statement is ImportStatement)
{
// Ignore these since we're already taking care of it via the dependencies / modules
}
else if (statement is SuiteStatement suiteStatement)
{
foreach (var subStatement in suiteStatement.Statements)
{
HandleTopLevelStatement(script, subStatement,
declarations, declaredFields);
}
}
else
{
declarations.AppendLine("FIXME");
var exprConverter = new ExpressionConverter(script, _typings, _modules);
statement.Walk(exprConverter);
declarations.Append(exprConverter.Result.ToString());
}
}