/// <summary>Evaluate lines till we run out</summary>
internal static Value Do(ILineRequestor requestor, IScope scope)
{
int lineNumber = 0;
try
{
Value value = null;
while (requestor.HasCurrent())
{
lineNumber = requestor.GetCurrentLineNumber();
value = EvalLines.DoOne(requestor, scope);
}
return value;
}
catch (Loki3Exception e)
{
e.AddLineNumber(lineNumber);
throw e;
}
}
/// <summary>
/// Get the body following the current line.
/// 'requestor' will be positioned on the last line of the body.
/// </summary>
internal static List<DelimiterList> DoGetBody(IScope scope, ILineRequestor requestor)
{
List<DelimiterList> body = new List<DelimiterList>();
// if we have a subset of all lines, we should simply use them as-is
if (requestor.IsSubset())
{
while (requestor.HasCurrent())
{
DelimiterList dline = requestor.GetCurrentLine(scope);
dline.Scope = scope; // use this scope when evaling later
body.Add(dline);
requestor.Advance();
}
return body;
}
// else just grab indented lines
DelimiterList pline = requestor.GetCurrentLine(scope);
int parentIndent = pline.Indent;
while (requestor.HasCurrent())
{
requestor.Advance();
DelimiterList childLine = requestor.GetCurrentLine(scope);
if (childLine == null || childLine.Indent <= parentIndent)
{
requestor.Rewind();
break; // now we have the body
}
childLine.Scope = scope; // use this scope when evaling later
// keep adding to the body
body.Add(childLine);
}
return body;
}