public PrinterNode Visit(IfNode node)
{
var pNode = new PrinterNode("If");
pNode.AddChild(node.Condition.Accept(this));
if (node.TrueBranch != null)
{
pNode.AddChild(node.TrueBranch.Accept(this));
}
if (node.FalseBranch != null)
{
pNode.AddChild(node.FalseBranch.Accept(this));
}
return(pNode);
}
public void VisitIfNode(IfNode node)
{
ExpressionNode condition = node.Condition;
StatementNode ifBranch = node.IfBranch;
StatementNode elseBranch = node.ElseBranch;
condition.Accept(this);
ifBranch.Accept(this);
if (condition.EvaluationType != TokenType.BOOLEAN_VAL)
{
analyzer.notifyError(new IllegalTypeError(condition));
}
if (elseBranch != null)
{
elseBranch.Accept(this);
if (ifBranch.Returns && elseBranch.Returns)
{
node.Returns = true;
}
}
}
public bool Visit(IfNode node)
{
node.Condition.Accept(this);
_typeChecker.RequireCast(_stack.SymBool, ref node.Condition);
return(true);
}
public void VisitIfNode(IfNode node)
{
}