public override void VisitIfThenElse(ASTIfThenElse n)
{
CFlatType condType = CheckSubTree(n.Condition);
if (condType is TypeBool)
{
CheckSubTree(n.Then);
CheckSubTree(n.Else);
}
else
{
ReportError(n.Location, "If statement must evaluate to boolean. Got type '{0}'", TypeToFriendlyName(condType));
}
}
public override void VisitIfThenElse(ASTIfThenElse n)
{
Label elseLabel = _gen.DefineLabel();
Label jumpOver = _gen.DefineLabel();
//check condition
n.Condition.Visit(this);
//go to else on false
_gen.Emit(OpCodes.Brfalse, elseLabel);
//walk if
n.Then.Visit(this);
_gen.Emit(OpCodes.Br, jumpOver);
//transfer control here, then walk else body
_gen.MarkLabel(elseLabel);
//walk else statments
n.Else.Visit(this);
_gen.MarkLabel(jumpOver);
}
