/// <summary>
/// Extracts value from internal representation into final form
/// </summary>
/// <param name="info">Option for which to extract the value</param>
/// <param name="knownSections">Dictionary of all known sections</param>
/// <returns>Value in expected format</returns>
private static object extractValue(OptionInfo info, Dictionary <QualifiedSectionName, InnerSection> knownSections)
{
// obtain section
var qSec = info.Name.Section;
if (!knownSections.ContainsKey(qSec))
{
throw new ParserException(
userMsg: "Error when retrieving expected value",
developerMsg: "Error when finding internal representation of section of desired option, possibility of it being missing");
}
var curSection = knownSections[qSec];
// option exists, retrieve value
if (curSection.Options.ContainsKey(info.Name))
{
var opt = curSection.Options[info.Name];
return(extractValue(info, opt));
}
// option does not exist but is optional
else if (info.IsOptional)
{
return(info.DefaultValue);
}
// option does not exist, and is missing
else
{
throw new ParserException(
userMsg: "Error when retrieving expected value",
developerMsg: "Error when finding internal representation of section of desired option, possibility of it being missing");
}
}
/// <summary>
/// Checks whether given option exists and has appropriate comment,
/// if it has no comment, it claims the default one
/// </summary>
/// <param name="option">Fully typed option info with, appropriate comment set</param>
/// <param name="knownSections">Dictionary of all known sections</param>
private static void checkOptionCommentAndSeen(OptionInfo option, Dictionary <QualifiedSectionName, InnerSection> knownSections)
{
var qSec = option.Name.Section;
// only if section exists
if (knownSections.ContainsKey(qSec))
{
var innerSect = knownSections[qSec];
var qOpt = option.Name;
// only if the option itself exists
if (innerSect.Options.ContainsKey(qOpt))
{
var innerOpt = innerSect.Options[qOpt];
// mark as seen for strict mode
innerOpt.Seen = true;
// only if it has no comment, default one is claimed
if (innerOpt.Comment == null)
{
innerOpt.Comment = option.DefaultComment;
}
}
}
}
/// <summary>
/// Set option info and it's value.
/// NOTE: Only options which are set via this call can be ADDED into output (readed options are included automatically).
/// </summary>
/// <param name="info">Structure describing option format</param>
/// <param name="value">Structure wearing option value</param>
internal void SetOption(OptionInfo info, OptionValue value)
{
// Check inner constraints
checkValidity(info, value);
// obtain qNames
QualifiedSectionName qSect = value.Name.Section;
QualifiedOptionName qOpt = value.Name;
// Check that section exists
if (!knownSections.ContainsKey(qSect))
{
throw new ParserException(
userMsg: "error, unknown section",
developerMsg: "tried to set option in unknown section, sections needs to be retrieved from RegisterStructure() or from the actual file");
}
// Ensure option exists
if (!knownSections[qSect].Options.ContainsKey(qOpt))
{
InnerOption newOpt = new InnerOption(qOpt, null);
knownSections[qSect].Options.Add(qOpt, newOpt);
newOpt.Comment = info.DefaultComment;
}
// along the way, check the comment
checkOptionCommentAndSeen(info, knownSections);
// Pass value into option
InnerOption curOpt = knownSections[qSect].Options[qOpt];
IValueConverter converter;
try
{
converter = Converters.ConfigConverters.getConverter(info);
}
catch (Exception ex)
{
throw new ParserException(userMsg: "Error when deserializing value", developerMsg: "Unsupported value tried to be deserialized", inner: ex);
}
if (info.IsContainer)
{
curOpt.strValues.Clear();
foreach (var elem in ConfigRW.ConfigCreation.StructureFactory.GetContainerElements(value.ConvertedValue))
{
curOpt.strValues.Add(converter.Serialize(elem));
}
}
else
{
curOpt.strValues.Clear();
curOpt.strValues.Add(converter.Serialize(value.ConvertedValue));
}
}
/// <summary>
/// Checks whether given option value satisfies given option constraints
/// for single element (either the only one, or one from many if it is collection)
/// </summary>
/// <param name="info">Structure describing option format</param>
/// <param name="value">Structure wearing option value</param>
/// <param name="elem">Single element to be checkd</param>
private static void checkValiditySingle(OptionInfo info, OptionValue value, object elem)
{
if (
(info.LowerBound != null && wrongOrder(info.LowerBound, elem))
||
(info.UpperBound != null && wrongOrder(elem, info.UpperBound))
)
{
throw new ParserExceptionWithinConfig(
userMsg: "Value out of bounds for option '{1}::{2}'",
developerMsg: "Given value is out of predefined bounds for option '{1}::{2}'",
section: value.Name.Section.ID,
option: value.Name.ID);
}
}
/// <summary>
/// Checks whether given option value satisfies given option constraints
/// </summary>
/// <param name="info">Structure describing option format</param>
/// <param name="value">Structure wearing option value</param>
internal void checkValidity(OptionInfo info, OptionValue value)
{
// Container handling
if (info.IsContainer)
{
foreach (var elem in ConfigRW.ConfigCreation.StructureFactory.GetContainerElements(value.ConvertedValue))
{
checkValiditySingle(info, value, elem);
}
}
// Scalar handling
else
{
checkValiditySingle(info, value, value.ConvertedValue);
}
}
/// <summary>
/// Extracts value from internal representation into final form
/// internal representation existent and provided to the method
/// </summary>
/// <param name="info">Option for which to extract the value</param>
/// <param name="opt">Inner representaiton of desired option with desired value</param>
/// <returns>Value in expected format</returns>
private static object extractValue(OptionInfo info, InnerOption opt)
{
// Check container/singleUnit consistenci
if (!info.IsContainer && opt.strValues.Count > 1)
{
throw new ParserExceptionWithinConfig(
userMsg: "Error when retrieving expected value for option '{1}::{2}' at line {0}",
developerMsg: "internal representation contains more values, while desired is only one for option '{1}::{2}' at line {0}",
line: opt.Line,
option: info.Name.ID,
section: info.Name.Section.ID
);
}
// Obtain converter
IValueConverter convertor;
try
{
convertor = Converters.ConfigConverters.getConverter(info);
}
catch (Exception ex)
{
throw new ParserExceptionWithinConfig(
userMsg: "Cannot find convertor, possibly due to invalid type specified for option '{1}::{2}' at line {0}",
developerMsg: "Convertor retrieving method thrown an exception, possibly due to invalid type specified for option '{1}::{2}' at line {0}",
line: opt.Line,
option: info.Name.ID,
section: info.Name.Section.ID,
inner: ex);
}
// Value extraction
try
{
// Container
if (info.IsContainer)
{
List <object> outElements = new List <object>();
foreach (string value in opt.strValues)
{
outElements.Add(convertor.Deserialize(value));
}
return(ConfigRW.ConfigCreation.StructureFactory.CreateContainer(info, outElements));
}
// Single value
else
{
return(convertor.Deserialize(opt.strValues.Count > 0 ? opt.strValues[0] : ""));
}
}
catch (Exception ex)
{
throw new ParserExceptionWithinConfig(
userMsg: "Type conversion failed for container option '{1}::{2}' at line {0}",
developerMsg: "An exception occurred during extraction of value from inner representaion for container option '{1}::{2}' at line {0}",
line: opt.Line,
option: info.Name.ID,
section: info.Name.Section.ID,
inner: ex);
}
}
