protected override void DoBuild(
EmitSyntax emit,
Pipe <EmitSyntax> ldvalue,
SwitchGeneratorAction action)
{
this.action = action;
#if false
var decisionTree = new BinaryDecisionTreeBuilder(intMap.DefaultValue, platformInfo);
var node = decisionTree.Build(intMap.Enumerate().ToArray());
#else
this.builder = new DecisionTreeBuilder(platformInfo);
var node = builder.Build(
intMap,
possibleBounds,
frequency);
#endif
this.emit = emit;
this.ldvalue = ldvalue;
this.labels = new List <Ref <Labels> >();
strategy.PlanCode(node);
strategy.GenerateCode();
// Debug.Write(node);
}
private bool TryBuildElementaryTree(IIntMap <int> map, out Decision result)
{
result = null;
int count = 0;
foreach (var arrow in map.Enumerate())
{
if (arrow.Value == map.DefaultValue)
{
continue;
}
++count;
if (count > platform.MaxLinearCount || arrow.Key.LongSize != 1)
{
return(false);
}
}
RelationalBranchDecision lastParent = null;
foreach (var arrow in map.Enumerate())
{
if (arrow.Value == map.DefaultValue)
{
continue;
}
var node = new RelationalBranchDecision(RelationalOperator.Equal, arrow.Key.First);
node.Left = GetActionDecision(arrow.Value);
if (lastParent == null)
{
result = node;
}
else
{
lastParent.Right = node;
}
lastParent = node;
}
lastParent.Right = DefaultActionDecision;
return(true);
}
private bool TryBuildElementaryTree(IIntMap<int> map, out Decision result)
{
result = null;
int count = 0;
foreach (var arrow in map.Enumerate())
{
if (arrow.Value == map.DefaultValue)
{
continue;
}
++count;
if (count > platform.MaxLinearCount || arrow.Key.LongSize != 1)
{
return false;
}
}
RelationalBranchDecision lastParent = null;
foreach (var arrow in map.Enumerate())
{
if (arrow.Value == map.DefaultValue)
{
continue;
}
var node = new RelationalBranchDecision(RelationalOperator.Equal, arrow.Key.First);
node.Left = GetActionDecision(arrow.Value);
if (lastParent == null)
{
result = node;
}
else
{
lastParent.Right = node;
}
lastParent = node;
}
lastParent.Right = DefaultActionDecision;
return true;
}