void ProcessBlock(BlockStatement node)
{
for (int i = 0; i < node.Statements.Count - 1; i++)
{
ForeachArrayMatcher matcher = new ForeachArrayMatcher(node.Statements[i], node.Statements[i + 1], this.context.MethodContext);
if (!matcher.Match())
{
continue;
}
if (CheckForIndexUsages(matcher))
{
continue;
}
context.MethodContext.RemoveVariable(matcher.Incrementor);
if (matcher.CurrentVariable != null)
{
context.MethodContext.RemoveVariable(matcher.CurrentVariable);
}
node.Statements.RemoveAt(i);
node.Statements.RemoveAt(i);
node.AddStatementAt(i, matcher.Foreach);
ProcessBlock(matcher.Foreach.Body);
}
}
void ProcessBlock (BlockStatement node)
{
for (int i = 0; i < node.Statements.Count - 1; i++)
{
ForeachArrayMatcher matcher = new ForeachArrayMatcher(node.Statements[i], node.Statements[i + 1], this.context.MethodContext);
if (!matcher.Match())
{
continue;
}
if (CheckForIndexUsages(matcher))
{
continue;
}
context.MethodContext.RemoveVariable(matcher.Incrementor);
if (matcher.CurrentVariable != null)
{
context.MethodContext.RemoveVariable(matcher.CurrentVariable);
}
node.Statements.RemoveAt(i);
node.Statements.RemoveAt(i);
node.AddStatementAt(i, matcher.Foreach);
ProcessBlock(matcher.Foreach.Body);
}
}
private bool CheckForIndexUsages(ForeachArrayMatcher matcher)
{
currentForIndeces.Push(matcher.Incrementor);
currentForIndecesUsed.Push(false);
foreach (var childStatement in matcher.Foreach.Body.Statements)
{
Visit(childStatement);
}
currentForIndeces.Pop();
return(currentForIndecesUsed.Pop());
}
private bool CheckForIndexUsages(ForeachArrayMatcher matcher)
{
currentForIndeces.Push(matcher.Incrementor);
currentForIndecesUsed.Push(false);
foreach (var childStatement in matcher.Foreach.Body.Statements)
{
Visit(childStatement);
}
currentForIndeces.Pop();
return currentForIndecesUsed.Pop();
}
