public void VisitNode(IterationStatement node)
{
Console.Write("<" + node.ClassName() + ">: ");
Console.ForegroundColor = ConsoleColor.Green;
Console.Write("WHILE");
Console.ResetColor();
PrintAttribute(node);
}
private void VisitNode(IterationStatement node)
{
AbstractNode cond_exp = node.Child;
AbstractNode body_stmt = cond_exp.Sib;
++_whileCount;
File.WriteLine("br.s {0}{1}", WHILE_COND, _whileCount);
File.WriteLine(WHILE_TRUE + _whileCount + ":");
body_stmt.Accept(this);
File.WriteLine(WHILE_COND + _whileCount + ":");
cond_exp.Accept(this);
File.WriteLine("brtrue.s {0}{1}", WHILE_TRUE, _whileCount);
}
private void VisitNode(IterationStatement node)
{
AbstractNode whileExp = node.Child;
AbstractNode bodyStmt = whileExp.Sib;
IterationStatementDescriptor iterDesc =
new IterationStatementDescriptor();
// while expression
whileExp.Accept(this);
iterDesc.WhileDescriptor = whileExp.TypeDescriptor;
PrimitiveTypeBooleanDescriptor whileBoolDesc =
whileExp.TypeDescriptor as PrimitiveTypeBooleanDescriptor;
if (whileBoolDesc == null)
{
iterDesc.TypeDescriptor = new ErrorDescriptor("If statement " +
"does not evaluate to a Boolean expression. (Has type: " +
GetSimpleName(whileExp.TypeDescriptor) + ")");
}
// if body stmt empty, infinite loop error
bodyStmt.Accept(this);
bodyStmt.TypeDescriptor = bodyStmt.Child.TypeDescriptor;
iterDesc.BodyDescriptor = bodyStmt.TypeDescriptor;
// propagate up errors as needed
if (iterDesc.WhileDescriptor is ErrorDescriptor ||
iterDesc.BodyDescriptor is ErrorDescriptor)
{
if (iterDesc.WhileDescriptor is ErrorDescriptor)
{
iterDesc.TypeDescriptor = iterDesc.WhileDescriptor;
if (iterDesc.BodyDescriptor is ErrorDescriptor)
{
((ErrorDescriptor)iterDesc.TypeDescriptor).CombineErrors(
(ErrorDescriptor)iterDesc.BodyDescriptor);
}
}
else
{
iterDesc.TypeDescriptor = iterDesc.BodyDescriptor;
}
}
// otherwise assign appropriate iteration statement descriptor
else
{
iterDesc.TypeDescriptor = iterDesc.WhileDescriptor;
}
node.TypeDescriptor = iterDesc;
}
private void VisitNode(IterationStatement node)
{
node.Accept(SemanticsVisitor);
}