public static void Go(ScalaWriter writer, WhileStatementSyntax whileStatement)
{
var info = new LoopInfo(whileStatement);
info.WritePreLoop(writer);
writer.WriteIndent();
writer.Write("while (");
Core.Write(writer, whileStatement.Condition);
writer.Write(")\r\n");
writer.WriteOpenBrace();
info.WriteLoopOpening(writer);
Core.WriteStatementAsBlock(writer, whileStatement.Statement, false);
info.WriteLoopClosing(writer);
writer.WriteCloseBrace();
info.WritePostLoop(writer);
}
public static void Go(ScalaWriter writer, ForStatementSyntax forStatement)
{
var info = new LoopInfo(forStatement);
writer.WriteLine("{ //for");
writer.Indent++;
info.WritePreLoop(writer);
if (forStatement.Declaration != null)
{
foreach (var variable in forStatement.Declaration.Variables)
{
writer.WriteIndent();
writer.Write("var ");
writer.Write(WriteIdentifierName.TransformIdentifier(variable.Identifier.ValueText));
writer.Write(TypeProcessor.ConvertTypeWithColon(forStatement.Declaration.Type));
if (variable.Initializer != null)
{
writer.Write(" = ");
Core.Write(writer, variable.Initializer.Value);
}
writer.Write(";\r\n");
}
}
foreach (var init in forStatement.Initializers)
{
writer.WriteIndent();
Core.Write(writer, init);
writer.Write(";\r\n");
}
writer.WriteIndent();
writer.Write("while (");
if (forStatement.Condition == null)
{
writer.Write("true");
}
else
{
Core.Write(writer, forStatement.Condition);
}
writer.Write(")\r\n");
writer.WriteOpenBrace();
info.WriteLoopOpening(writer);
Core.WriteStatementAsBlock(writer, forStatement.Statement, false);
info.WriteLoopClosing(writer);
foreach (var iterator in forStatement.Incrementors)
{
writer.WriteIndent();
Core.Write(writer, iterator);
writer.Write(";\r\n");
}
writer.WriteCloseBrace();
info.WritePostLoop(writer);
writer.Indent--;
writer.WriteLine("} //end for");
}
public static void Go(ScalaWriter writer, ForEachStatementSyntax foreachStatement)
{
var info = new LoopInfo(foreachStatement);
var types = Program.GetModel(foreachStatement).GetTypeInfo(foreachStatement.Expression);
var typeStr = TypeProcessor.GenericTypeName(types.Type);
if (types.Type is IArrayTypeSymbol)
{
//It's faster to "while" through arrays than "for" through them
writer.WriteOpenBrace();
info.WritePreLoop(writer);
writer.WriteLine("var __foreachindex:Int = 0;");
writer.WriteIndent();
writer.Write("val __foreacharray = ");
Core.Write(writer, foreachStatement.Expression);
writer.Write(";\r\n");
writer.WriteLine("while (__foreachindex < __foreacharray.length)");
writer.WriteOpenBrace();
writer.WriteIndent();
writer.Write("val ");
writer.Write(WriteIdentifierName.TransformIdentifier(foreachStatement.Identifier.ValueText));
writer.Write(" = __foreacharray(__foreachindex);\r\n");
info.WriteLoopOpening(writer);
Core.WriteStatementAsBlock(writer, foreachStatement.Statement, false);
info.WriteLoopClosing(writer);
writer.WriteLine("__foreachindex += 1;");
writer.WriteCloseBrace();
info.WritePostLoop(writer);
writer.WriteCloseBrace();
}
else if (typeStr == "System.Collections.Generic.List<>"
//|| typeStr == "System.Collections.Generic.Dictionary<,>"
|| typeStr == "System.Collections.Generic.Dictionary<,>.KeyCollection" ||
typeStr == "System.Collections.Generic.Dictionary<,>.ValueCollection")
{
//It's faster to "while" over a list's iterator than to "for" through it
writer.WriteOpenBrace();
info.WritePreLoop(writer);
writer.WriteIndent();
writer.Write("val __foreachiterator = ");
Core.Write(writer, foreachStatement.Expression);
writer.Write(".iterator();\r\n");
writer.WriteLine("while (__foreachiterator.hasNext())");
writer.WriteOpenBrace();
writer.WriteIndent();
writer.Write("val ");
writer.Write(WriteIdentifierName.TransformIdentifier(foreachStatement.Identifier.ValueText));
writer.Write(" = __foreachiterator.next();\r\n");
info.WriteLoopOpening(writer);
Core.WriteStatementAsBlock(writer, foreachStatement.Statement, false);
info.WriteLoopClosing(writer);
writer.WriteCloseBrace();
info.WritePostLoop(writer);
writer.WriteCloseBrace();
}
else
{
info.WritePreLoop(writer);
writer.WriteIndent();
writer.Write("for (");
writer.Write(WriteIdentifierName.TransformIdentifier(foreachStatement.Identifier.ValueText));
writer.Write(" <- ");
Core.Write(writer, foreachStatement.Expression);
writer.Write(")\r\n");
writer.WriteOpenBrace();
info.WriteLoopOpening(writer);
Core.WriteStatementAsBlock(writer, foreachStatement.Statement, false);
info.WriteLoopClosing(writer);
writer.WriteCloseBrace();
info.WritePostLoop(writer);
}
}
