public JsNode VisitForeachStatement(ForeachStatement node)
{
if (node.InExpression != null)
{
var expRes = node.InExpression.Resolve();
var et = expRes.Type.GetDefinitionOrArrayType();
//var et = node.expression.entity_typeref.GetEntityType();
if (et != null)
{
var jta = Sk.GetJsTypeAttribute(et);
if (jta != null && jta.NativeEnumerator)
{
var node2 = new JsForInStatement
{
Initializer = Js.Var(node.VariableName),
Member = VisitExpression(node.InExpression),
Statement = VisitStatement(node.EmbeddedStatement)
};
return(node2);
}
else if (jta != null && jta.NativeArrayEnumerator)
{
VariableIteratorCounter++;
var iteratorName = "$i" + VariableIteratorCounter;
var lengthCacheName = "$l" + VariableIteratorCounter;
var exp2 = VisitExpression(node.InExpression);
var target = exp2;
var targetCacheName = "$t" + VariableIteratorCounter;
if (exp2.NodeType != JsNodeType.MemberExpression || ((JsMemberExpression)exp2).PreviousMember != null) //is not simple name
{
target = Js.Member(targetCacheName);
}
var itemAccess = target.IndexerAccess(Js.Member(iteratorName));
var node2 = new JsForStatement();
node2.Condition = Js.Member(iteratorName).LessThan(Js.Member(lengthCacheName));
node2.Iterators = new List <JsStatement> {
Js.Member(iteratorName).PlusPlus().Statement(), Js.Member(node.VariableName).Assign(itemAccess).Statement()
};
if (target != exp2) //use target caching
{
node2.Initializers = new List <JsStatement> {
Js.Var(iteratorName, Js.Value(0)).AndVar(targetCacheName, exp2.Clone()).AndVar(lengthCacheName, target.Clone().Member("length")).AndVar(node.VariableName, itemAccess.Clone()).Statement()
};
}
else
{
node2.Initializers = new List <JsStatement> {
Js.Var(iteratorName, Js.Value(0)).AndVar(lengthCacheName, exp2.Clone().Member("length")).AndVar(node.VariableName, itemAccess.Clone()).Statement()
};
}
node2.Statement = VisitStatement(node.EmbeddedStatement);
return(node2);
}
}
}
var iteratorName2 = "$it" + VariableIteratorCounter;
VariableIteratorCounter++;
var node3 = Js.Var(iteratorName2, VisitExpression(node.InExpression).Member("GetEnumerator").Invoke()).Statement();
var whileNode = Js.While(Js.Member(iteratorName2).Member("MoveNext").Invoke());
var getCurrentStatement = Js.Var(node.VariableName, Js.Member(iteratorName2).Member("get_Current").Invoke()).Statement();
var jsStatement = VisitStatement(node.EmbeddedStatement);
JsBlock block;
if (jsStatement is JsBlock)
{
block = (JsBlock)jsStatement;
}
else
{
block = Js.Block().Add(jsStatement);
}
block.Statements.Insert(0, getCurrentStatement);
whileNode.Statement = block;
var block2 = Js.Block().Add(node3).Add(whileNode);
return(block2);
}