public override void GenerateCode(AbsynCodeGenerator codeGen, StructureNode node, StructureNode latchNode, AbsynStatementEmitter emitter)
{
codeGen.EmitLinearBlockStatements(node, emitter);
if (node == latchNode)
return;
var exp = codeGen.BranchCondition(node);
var ifStm = EmitIfCondition(exp, this, emitter);
var succ = FirstBranch(node);
var emitThen = new AbsynStatementEmitter(ifStm.Then);
if (node.UnstructType == UnstructuredType.JumpInOutLoop)
{
codeGen.DeferRendering(node, succ, emitThen);
codeGen.GenerateCode(SecondBranch(node), latchNode, emitter);
}
else
{
if (Follow == null)
throw new NotSupportedException("Null condfollow");
codeGen.PushFollow(Follow);
if (node.Conditional is IfThenElse)
{
codeGen.IncompleteNodes.Add(node);
}
if (codeGen.IsVisited(succ) || (node.Loop != null && succ == node.Loop.Follow))
codeGen.EmitGotoAndForceLabel(node, succ, emitThen);
else
codeGen.GenerateCode(succ, latchNode, emitThen);
if (node.Conditional is IfThenElse)
{
codeGen.IncompleteNodes.Remove(node);
succ = node.Then;
AbsynStatementEmitter emitElse = new AbsynStatementEmitter(ifStm.Else);
if (codeGen.IsVisited(succ))
codeGen.EmitGotoAndForceLabel(node, succ, emitElse);
else
codeGen.GenerateCode(succ, latchNode, emitElse);
if (HasSingleIfThenElseStatement(ifStm.Then))
{
ifStm.InvertCondition();
}
}
codeGen.PopFollow();
codeGen.GenerateCode(Follow, latchNode, emitter);
}
}
public override void GenerateCode(AbsynCodeGenerator codeGen, StructureNode node, StructureNode latchNode, AbsynStatementEmitter emitter)
{
codeGen.EmitLinearBlockStatements(node, emitter);
Expression exp = ((SwitchInstruction) node.Instructions.Last.Instruction).Expression;
AbsynSwitch switchStm = emitter.EmitSwitch(node, exp, new List<AbsynStatement>());
AbsynStatementEmitter emitSwitchBranches = new AbsynStatementEmitter(switchStm.Statements);
if (Follow == null)
throw new NotSupportedException(string.Format("Null follow node for case statement at {0} is not supported.", node.Name));
codeGen.PushFollow(Follow);
for (int i = 0; i < node.OutEdges.Count; i++)
{
emitSwitchBranches.EmitCaseLabel(node, i);
StructureNode succ = node.OutEdges[i];
if (codeGen.IsVisited(succ))
{
codeGen.EmitGotoAndForceLabel(node, succ, emitSwitchBranches);
}
else
{
codeGen.GenerateCode(succ, latchNode, emitSwitchBranches);
emitSwitchBranches.EmitBreak();
}
}
codeGen.PopFollow();
codeGen.GenerateCode(Follow, latchNode, emitter);
}
