public static Set <Local> Get(Expression e)
{
var n = new FindLocals();
n.Visit(e);
return(n.locals);
}
private Expression ExtractOldExpression(MethodCall call)
{
var cand = call.Operands[0];
if (this.currentSL != null)
{
var locs = FindLocals.Get(cand);
if (locs.Count > 0)
{
// find the instructions that set these locals
var assignments = new List <Statement>();
for (int i = this.currentSLindex - 1; i >= 0; i--)
{
var a = this.currentSL[i] as AssignmentStatement;
if (a == null)
{
continue;
}
var loc = a.Target as Local;
if (loc == null)
{
continue;
}
if (locs.Contains(loc))
{
assignments.Add(a);
this.currentSL[i] = null;
locs.Remove(loc);
}
if (locs.Count == 0)
{
break;
}
}
assignments.Reverse();
var be = new StatementList();
assignments.ForEach(astmt => be.Add(astmt));
be.Add(new ExpressionStatement(cand));
var sc = cand.SourceContext;
cand = new BlockExpression(new Block(be));
cand.SourceContext = sc;
if (locs.Count > 0)
{
// warn that we couldn't extract the local
}
}
}
return(cand);
}
public static Set<Local> Get(Expression e)
{
var n = new FindLocals();
n.Visit(e);
return n.locals;
}
