protected override object VisitForEachStatement(ForEachStatementSyntax node)
{
var collection = InternalVisitExpression(node.Expression);
#if ROSLYN
var info1 = ModelExtensions.GetDeclaredSymbol(context.RoslynModel, node);
var info = info1 as ILocalSymbol;
if (info == null)
{
throw new ArgumentNullException("info");
}
var rosType = context.Roslyn_ResolveType(info.Type);
var loopVariableType = new LangType(rosType);
var loopVariableName = info.Name;
#else
var type = _VisitExpression(node.Type);
if (type is UnknownIdentifierValue)
{
var xx = type as UnknownIdentifierValue;
if (xx.Identifier == "var")
{
var et = TypesUtil.GetEnumerateItemType(collection.ValueType);
type = new TypeValue(et);
}
else
{
throw new NotSupportedException();
}
}
Debug.Assert(type is TypeValue);
Debug.Assert((type as TypeValue).DotnetType == rosType);
var loopVariableType = new LangType((type as TypeValue).DotnetType);
var loopVariableName = _Name(node.Identifier);
#endif
var ps = new VariableDeclaration(
loopVariableType,
new[]
{
new VariableDeclarator(loopVariableName, null, null)
}
);
return(context.DoWithLocalVariables(ps,
() =>
{
var stat = Visit(node.Statement);
Debug.Assert(stat is IStatement);
var g = new ForEachStatement(loopVariableType, loopVariableName, collection, stat as IStatement);
return g;
}));
}