// Group: Initialization Functions
// __________________________________________________________________________
/* Function: Start_Stage1
*
* Loads and combines the two versions of <Languages.txt>, returning whether it was successful. If there were any
* errors they will be added to errorList.
*
* Only the settings which don't depend on <Comments.txt> will be loaded. Call <Start_Stage2()> after
* <CommentTypes.Manager.Start_Stage1()> has been called to complete the process.
*
* Dependencies:
*
* - <Config.Manager> must be started before this class can start.
*/
public bool Start_Stage1(Errors.ErrorList errorList)
{
StartupIssues newStartupIssues = StartupIssues.None;
bool success = true;
//
// Languages.txt
//
Path systemTextConfigPath = EngineInstance.Config.SystemConfigFolder + "/Languages.txt";
Path projectTextConfigPath = EngineInstance.Config.ProjectConfigFolder + "/Languages.txt";
ConfigFiles.TextFileParser textConfigFileParser = new ConfigFiles.TextFileParser();
// Load the system Languages.txt.
if (!textConfigFileParser.Load(systemTextConfigPath, PropertySource.SystemLanguagesFile, errorList, out systemTextConfig))
{
success = false;
}
// Load the project Languages.txt. We want to do this even if the system Languages.txt failed so we get the error messages
// from both.
if (System.IO.File.Exists(projectTextConfigPath))
{
if (!textConfigFileParser.Load(projectTextConfigPath, PropertySource.ProjectLanguagesFile, errorList, out projectTextConfig))
{
success = false;
}
}
// If it doesn't exist it's not an error. Just create a blank config.
else
{
projectTextConfig = new ConfigFiles.TextFile();
}
if (!success)
{
return(false);
}
if (!ValidateLanguages(systemTextConfig, errorList))
{
success = false;
}
if (!ValidateLanguages(projectTextConfig, errorList))
{
success = false;
}
if (!success)
{
return(false);
}
// Merge them into one combined config. Note that this doesn't do file extensions, aliases, or shebang strings. Only the
// languages and their other properties will exist in the merged config.
if (!MergeLanguages(systemTextConfig, projectTextConfig, out mergedTextConfig, errorList))
{
return(false);
}
if (!ValidateLanguages(mergedTextConfig, errorList))
{
return(false);
}
//
// Languages.nd
//
Path lastRunConfigPath = EngineInstance.Config.WorkingDataFolder + "/Languages.nd";
ConfigFiles.BinaryFileParser binaryConfigFileParser = new ConfigFiles.BinaryFileParser();
// If we need to start fresh anyway we can skip loading the file and create a blank config
if (EngineInstance.HasIssues(StartupIssues.NeedToStartFresh |
StartupIssues.CommentIDsInvalidated |
StartupIssues.CodeIDsInvalidated) ||
// though if that wasn't the case but we failed at loading the file, the result is the same
!binaryConfigFileParser.Load(lastRunConfigPath, out lastRunConfig))
{
lastRunConfig = new Config();
newStartupIssues |= StartupIssues.NeedToReparseAllFiles |
StartupIssues.CodeIDsInvalidated;
}
//
// Create the final config
//
config = new Config();
// We go through the languages present in the merged text config files and convert them into the final config. We
// need the contents of Comments.nd so we can keep the language IDs consistent from one run to the next if possible.
IDObjects.NumberSet usedLanguageIDs = new IDObjects.NumberSet();
IDObjects.NumberSet lastRunUsedLanguageIDs = lastRunConfig.UsedLanguageIDs();
if (mergedTextConfig.HasLanguages)
{
foreach (var textLanguage in mergedTextConfig.Languages)
{
// First we need our base language object. If there's a predefined language matching the name we'll use that so
// we get its settings and parser. If not we'll create a new object. We shouldn't have to worry about more than one
// language using the same predefined language object because validation should have taken care of that.
var finalLanguage = FindPredefinedLanguage(textLanguage.Name);
if (finalLanguage == null)
{
finalLanguage = new Language(textLanguage.Name);
}
// Apply the properties. Keep going if there are errors since we want to find them all.
if (!FinalizeLanguage(ref finalLanguage, textLanguage, errorList))
{
success = false;
}
// We still need to set the ID. See if a language of the same name existed in the previous run.
var lastRunLanguage = lastRunConfig.LanguageFromName(textLanguage.Name);
// If there wasn't one we can assign a new ID, but pick one that isn't used in this run or the last run so there's no
// conflicts.
if (lastRunLanguage == null)
{
int id = lastRunUsedLanguageIDs.LowestAvailable;
if (usedLanguageIDs.Contains(id))
{
id = Math.Max(usedLanguageIDs.Highest + 1, lastRunUsedLanguageIDs.Highest + 1);
}
finalLanguage.ID = id;
config.AddLanguage(finalLanguage);
usedLanguageIDs.Add(finalLanguage.ID);
lastRunUsedLanguageIDs.Add(finalLanguage.ID);
}
// If the language did exist but we haven't used its ID yet, we can keep it.
else if (!usedLanguageIDs.Contains(lastRunLanguage.ID))
{
finalLanguage.ID = lastRunLanguage.ID;
config.AddLanguage(finalLanguage);
usedLanguageIDs.Add(finalLanguage.ID);
}
// However, if the language did exist and we assigned that ID already, then we have a conflict and have to tell the
// engine that the IDs from the last run were invalidated. We can just assign anything unused at this point since it
// no longer matters.
else
{
finalLanguage.ID = usedLanguageIDs.LowestAvailable;
config.AddLanguage(finalLanguage);
usedLanguageIDs.Add(finalLanguage.ID);
newStartupIssues |= StartupIssues.CodeIDsInvalidated;
}
// Now that we have a final ID, set the simple identifier for any type that still needs it. Some types may have it null if
// it wasn't manually defined and the name didn't contain A-Z characters.
if (finalLanguage.SimpleIdentifier == null)
{
finalLanguage.SimpleIdentifier = "LanguageID" + finalLanguage.ID;
}
// Also create a generic parser object if one wasn't inherited from a predefined language.
if (!finalLanguage.HasParser)
{
finalLanguage.Parser = new Parser(EngineInstance, finalLanguage);
}
}
}
if (!success)
{
return(false);
}
// Apply file extensions, aliases, and shebang strings now.
MergeLanguageIdentifiersInto(ref config, systemTextConfig, projectTextConfig);
// That's it for stage one. Everything else is in stage 2.
if (newStartupIssues != StartupIssues.None)
{
EngineInstance.AddStartupIssues(newStartupIssues);
}
return(true);
}
/* Function: Start_Stage2
*
* Finishes loading and and combing the two versions of <Languages.txt>, returning whether it was successful. If there
* were any errors they will be added to errorList.
*
* This must be called after <Start_Stage1()> has been called, and also <CommentTypes.Manager.Start_Stage1()>. This
* finalizes any settings which also depend on <Comments.txt>.
*
* Dependencies:
*
* - <Config.Manager> must be started before this class can start.
* - <Start_Stage1()> must be called and return true before this function can be called.
* - <CommentTypes.Manager.Start_Stage1()> must be called and return true before this function can be called.
*/
public bool Start_Stage2(Errors.ErrorList errorList)
{
bool success = true;
// Go through the lists and apply prototype enders, since CommentTypes.Manager should have all their names now.
if (!MergePrototypeEndersInto_Stage2(ref config, systemTextConfig, errorList))
{
success = false;
}
if (!MergePrototypeEndersInto_Stage2(ref config, projectTextConfig, errorList))
{
success = false;
}
if (!success)
{
return(false);
}
// Now we have our final configuration and everything is okay. Save the text files again to reformat them.
TouchUp_Stage2(ref systemTextConfig, config);
TouchUp_Stage2(ref projectTextConfig, config);
Path systemTextConfigPath = EngineInstance.Config.SystemConfigFolder + "/Languages.txt";
Path projectTextConfigPath = EngineInstance.Config.ProjectConfigFolder + "/Languages.txt";
ConfigFiles.TextFileParser textConfigFileParser = new ConfigFiles.TextFileParser();
// If the project Languages.txt didn't exist, saving the blank structure that was created will create a default one.
if (!textConfigFileParser.Save(projectTextConfigPath, PropertySource.ProjectLanguagesFile, projectTextConfig, errorList))
{
return(false);
}
;
// We don't care if we're not able to resave the system Languages.txt since it may be in a protected location.
textConfigFileParser.Save(systemTextConfigPath, PropertySource.SystemLanguagesFile, systemTextConfig, errorList: null);
// Save Languages.nd as well.
Path lastRunConfigPath = EngineInstance.Config.WorkingDataFolder + "/Languages.nd";
ConfigFiles.BinaryFileParser binaryConfigFileParser = new ConfigFiles.BinaryFileParser();
binaryConfigFileParser.Save(lastRunConfigPath, config);
// Compare the config against the previous one and reparse everything if there are changes. Changes that would invalidate
// IDs have already been handled.
if (config != lastRunConfig)
{
EngineInstance.AddStartupIssues(StartupIssues.NeedToReparseAllFiles);
}
// We're done with these variables which were only needed between start stages 1 and 2.
systemTextConfig = null;
projectTextConfig = null;
mergedTextConfig = null;
lastRunConfig = null;
started = true;
return(true);
}
