public CodeBlock GetLines(int startIndex, int endIndex, List <SourceLine> lines, out ParseError error, SourceLineDirective parent)
{
CodeBlock block = new CodeBlock(parent);
SourceLineDirective sourceLineDirective = null;
bool isSeekingEnd = false;
bool startRequired = false;
int openedIndex = 0;
int seekLevel = 0;
int currentLevel = 0;
for (int i = startIndex; i < endIndex; i++)
{
if (SourceLineDirective.IsDirective(lines[i].Input))
{
if (isSeekingEnd)
{
continue;
}
if (startRequired)
{
error = new ParseError(ParseErrorType.Directives_StartOfCodeBlockExpected,
lines[i].LineIndex, lines[i].FileName);
return(null);
}
var dir = new SourceLineDirective(lines[i]);
error = dir.Parse();
if (error != null)
{
return(null);
}
lines[i] = dir.Cast(out error);
if (error != null)
{
return(null);
}
var directive = (lines[i] as SourceLineDirective);
if (directive.RequireCodeBlock)
{
directive.CodeBlock = block;
sourceLineDirective = directive;
startRequired = true;
}
else
{
block.ChildBlocks.Add(new CodeBlock(directive));
}
}
else if (SourceLineCodeBlockLimiter.IsCodeBlockLimiter(lines[i].Input))
{
var lim = new SourceLineCodeBlockLimiter(lines[i]);
error = lim.Parse();
if (error != null)
{
return(null);
}
lines[i] = lim;
if (lim.IsOpening)
{
if (!isSeekingEnd)
{
if (!startRequired)
{
error = new ParseError(ParseErrorType.Directives_StartOfCodeBlockIsUnexpected,
lines[i].LineIndex, lines[i].FileName);
return(null);
}
seekLevel = currentLevel;
openedIndex = i;
isSeekingEnd = true;
startRequired = false;
}
currentLevel++;
}
else
{
if (startRequired)
{
error = new ParseError(ParseErrorType.Directives_StartOfCodeBlockExpected,
lines[i].LineIndex, lines[i].FileName);
return(null);
}
if (isSeekingEnd && currentLevel - 1 == seekLevel)
{
sourceLineDirective.CodeBlock.ChildBlocks.Add(GetLines(openedIndex + 1, i,
lines, out error, sourceLineDirective));
if (error != null)
{
return(null);
}
isSeekingEnd = false;
startRequired = false;
}
if (currentLevel == 0)
{
error = new ParseError(ParseErrorType.Directives_EndOfCodeBlockIsunexpected,
lines[i].LineIndex, lines[i].FileName);
return(null);
}
currentLevel--;
}
}
else
{
if (startRequired)
{
error = new ParseError(ParseErrorType.Directives_StartOfCodeBlockExpected,
lines[i].LineIndex, lines[i].FileName);
return(null);
}
if (isSeekingEnd)
{
continue;
}
if (!lines[i].IsEmpty)
{
block.RawLines.Add(lines[i]);
}
}
}
if (startRequired)
{
error = new ParseError(ParseErrorType.Directives_StartOfCodeBlockExpected,
lines[endIndex - 1].LineIndex, lines[endIndex - 1].FileName);
return(null);
}
if (isSeekingEnd)
{
error = new ParseError(ParseErrorType.Directives_EndOfCodeBlockExpected,
lines[endIndex - 1].LineIndex, lines[endIndex - 1].FileName);
return(null);
}
error = null;
return(block);
}
public SourceLineDirectiveAssembly(SourceLineDirective line) : base(line)
{
Name = line.Name;
Parameters = line.Parameters;
RequireCodeBlock = true;
}
public SourceLineDirectiveField(SourceLineDirective line) : base(line)
{
Name = line.Name;
Parameters = line.Parameters;
RequireCodeBlock = false;
}
public CodeBlock(SourceLineDirective parent)
{
ParentDirective = parent;
ChildBlocks = new List <CodeBlock>();
RawLines = new List <SourceLine>();
}
