SectionOrError(int targetPower, int duration, string desc, bool isError, int start, int length, string message, bool isLoop, int loopCount, SectionOrError loopSection) : base(targetPower, duration, desc)
{
IsError = isError;
Start = start;
Length = length;
Message = message;
IsLoop = isLoop;
LoopCount = loopCount;
LoopSection = loopSection;
}
SectionOrError ParseLine(int offset, string line, int depth = 0)
{
if (loopSectionList.Count < depth)
{
return(SectionOrError.GetError(0, line.Length, "Loop mark is too many."));
}
if (line[0] == '#')
{
return(null);
}
int sectionHeadIdx = 0;
while (line[sectionHeadIdx] == '%')
{
sectionHeadIdx = IndexOfNextNonWhiteSpace(line, sectionHeadIdx + 1);
depth++;
}
if (loopSectionList.Count < depth)
{
return(SectionOrError.GetError(offset, line.Length, "Bad loop mark is found."));
}
while (loopSectionList.Count > depth)
{
loopSectionList.RemoveAt(loopSectionList.Count - 1);
}
if (line.Substring(sectionHeadIdx).ToLower().IndexOf("loop") == 0)
{
int countIdx = IndexOfNextNonWhiteSpace(line, sectionHeadIdx + 4);
if (countIdx == line.Length)
{
return(SectionOrError.GetError(offset, line.Length, "Loop header 'LOOP n' lacks 'n'."));
}
try
{
var n = Int32.Parse(line.Substring(countIdx));
var section = SectionOrError.GetLoop(n);
loopSectionList.Add(section);
return(section);
}
catch (Exception)
{
return(SectionOrError.GetError(offset, line.Length, "Loop header 'LOOP n' don't have digits. 'n' must be digits."));
}
}
int targetPowerTailIdx = IndexOfNextWhiteSpace(line, sectionHeadIdx);
if (targetPowerTailIdx == sectionHeadIdx)
{
return(SectionOrError.GetError(offset, 1, "Each lines of plan should start with # or number."));
}
if (targetPowerTailIdx == line.Length)
{
return(SectionOrError.GetError(offset, line.Length, "No duration column and description."));
}
char mayW = line[targetPowerTailIdx - 1];
int targetPowerTailAdj = 0;
if (mayW == 'w' || mayW == 'W')
{
targetPowerTailAdj = -1;
}
int targetPower;
var s = line.Substring(sectionHeadIdx, targetPowerTailIdx + targetPowerTailAdj - sectionHeadIdx);
if (!Int32.TryParse(line.Substring(sectionHeadIdx, targetPowerTailIdx + targetPowerTailAdj - sectionHeadIdx), out targetPower) || targetPower < 0)
{
return(SectionOrError.GetError(offset, targetPowerTailIdx - sectionHeadIdx, "Target power column should be a natural number or zero."));
}
int durationHeadIdx = IndexOfNextNonWhiteSpace(line, targetPowerTailIdx);
if (durationHeadIdx == line.Length)
{
return(SectionOrError.GetError(offset + targetPowerTailIdx, durationHeadIdx - targetPowerTailIdx, "No duration column and description."));
}
int durationTailIdx = IndexOfNextWhiteSpace(line, durationHeadIdx);
if (durationTailIdx == line.Length)
{
return(SectionOrError.GetError(offset + durationHeadIdx, durationTailIdx - durationHeadIdx, "No description."));
}
var durationOrError = ParseDuration(line.Substring(durationHeadIdx, durationTailIdx - durationHeadIdx));
if (durationOrError.IsError)
{
return(SectionOrError.GetError(offset + durationHeadIdx, durationTailIdx - durationHeadIdx, durationOrError.Message));
}
int duration = durationOrError.Duration;
int descHeadIdx = IndexOfNextNonWhiteSpace(line, durationTailIdx);
if (descHeadIdx == line.Length)
{
return(SectionOrError.GetError(offset + durationTailIdx, descHeadIdx - durationTailIdx, "No description."));
}
string desc = line.Substring(descHeadIdx).Trim();
if (desc.Length > 15)
{
return(SectionOrError.GetError(offset + descHeadIdx, line.Length - descHeadIdx, "Description should be under 15 characters."));
}
if (!CheckDesc(desc))
{
return(SectionOrError.GetError(offset + descHeadIdx, line.Length - descHeadIdx, "Description should be ASCII characters."));
}
while (loopSectionList.Count > depth)
{
loopSectionList.RemoveAt(loopSectionList.Count - 1);
}
if (depth == 0)
{
return(SectionOrError.GetSection(targetPower, duration, desc));
}
else
{
return(SectionOrError.GetSection(targetPower, duration, desc, loopSectionList[depth - 1]));
}
}
public static SectionOrError GetSection(int targetPower, int duration, string desc, SectionOrError loopSection)
{
return(new SectionOrError(targetPower, duration, desc, false, 0, 0, null, false, 0, loopSection));
}