public CompilerLog Compile(string text)
{
var log = new CompilerLog();
List <TokenizedLine> tokenizedLines = _parser.TokenizeFile(log, text);
var sw = new Stopwatch();
sw.Start();
var objectDefinitions = new StackObject();
var currentFrame = new Compilation.StackFrame();
foreach (var tokenizedLine in tokenizedLines)
{
switch (tokenizedLine.SyntaxTree.Directive)
{
case Directive.Define:
CompileDefinition(log, objectDefinitions, tokenizedLine);
break;
case Directive.Enter:
CompileEntrance(objectDefinitions, log, currentFrame, tokenizedLine);
break;
case Directive.Exit:
CompileExit(log, currentFrame, tokenizedLine);
break;
default:
log.Warning(tokenizedLine, $"Could not operate on unknown directive {tokenizedLine.SyntaxTree.Directive}.");
break;
}
}
sw.Stop();
log.CompileTime = sw.ElapsedMilliseconds;
return(log);
}
private void CompileExit(
CompilerLog log,
Compilation.StackFrame currentFrame,
TokenizedLine tokenizedLine)
{
SyntaxTree tree = tokenizedLine.SyntaxTree;
switch (tree.DeclaredType)
{
case DeclaredType.Act:
if (currentFrame.Act == null)
{
log.Warning(tokenizedLine, $"Attempted to exit act but currently not in an act.");
}
else
{
log.Debug(tokenizedLine, $"Exiting act \"{currentFrame.Act.Name}\"");
currentFrame.Act = null;
}
break;
case DeclaredType.Scene:
if (currentFrame.Scene == null)
{
log.Warning(tokenizedLine, $"Attempted to exit scene but currently not in a scene.");
}
else if (currentFrame.Scene.Characters.Count != 0)
{
log.Warning(tokenizedLine, "Exiting scene with characters present will exeunt all characters. Did you mean to do this?");
currentFrame.Scene = null;
}
else
{
log.Debug(tokenizedLine, $"Exiting scene \"{currentFrame.Scene.Name}\"");
currentFrame.Scene = null;
}
break;
case DeclaredType.Character:
var characterName = tree.AssignedValue.ToString();
if (currentFrame.Scene == null)
{
log.Error(tokenizedLine, $"Cannot exit character outside of scene. Please enter a scene first.");
}
else
{
Character characterToExit = currentFrame.Scene.Characters
.SingleOrDefault(t => t.Name == characterName);
if (characterToExit == null)
{
log.Warning(tokenizedLine, $"Attempted to exit character \"{characterName}\" who was not present in scene.");
}
else
{
log.Debug(tokenizedLine, $"Exiting character \"{characterName}\"");
currentFrame.Scene.Characters.Remove(characterToExit);
}
}
break;
case DeclaredType.Setting:
var settingName = tree.AssignedValue.ToString();
if (currentFrame.Setting == null)
{
log.Error(tokenizedLine, $"Attempted to exit setting \"{settingName}\" which was never entered.");
}
else if (currentFrame.Setting.Name != settingName)
{
log.Error(tokenizedLine, $"Attempted to exit setting \"{settingName}\", but expected to exit current setting with name \"{currentFrame.Setting.Name}\".");
}
else
{
log.Debug(tokenizedLine, $"Exiting setting \"{settingName}\"");
currentFrame.Setting = null;
}
break;
default:
throw new InternalCompilerException($"Cannot exit declared type {tree.DeclaredType}");
}
}
private void CompileEntrance(
StackObject objectDefinitions,
CompilerLog log,
Compilation.StackFrame currentFrame,
TokenizedLine tokenizedLine)
{
SyntaxTree tree = tokenizedLine.SyntaxTree;
switch (tree.DeclaredType)
{
case DeclaredType.Act:
var actName = tree.AssignedValue.ToString();
if (currentFrame.Act != null)
{
log.Error(tokenizedLine, $"Cannot enter act with name \"{actName}\" when already in act \"{currentFrame.Act.Name}\".");
}
else
{
var actToEnter = new Act(actName);
if (objectDefinitions.Acts.Contains(actToEnter))
{
log.Error(tokenizedLine, $"Cannot re-enter act with name \"{actName}\".");
}
else
{
objectDefinitions.Acts.Add(actToEnter);
currentFrame.Act = actToEnter;
}
}
break;
case DeclaredType.Scene:
var sceneName = tree.AssignedValue.ToString();
if (currentFrame.Scene != null)
{
log.Error(tokenizedLine, $"Cannot enter scene with name \"{sceneName}\" when already in scene \"{currentFrame.Scene.Name}\".");
}
else
{
var sceneToEnter = new Scene(sceneName);
if (objectDefinitions.Scenes.Contains(sceneToEnter))
{
log.Error(tokenizedLine, $"Cannot re-enter scene with name \"{sceneName}\".");
}
else
{
log.Debug(tokenizedLine, $"Entered scene \"{sceneName}\"");
objectDefinitions.Scenes.Add(sceneToEnter);
currentFrame.Scene = sceneToEnter;
}
}
break;
case DeclaredType.Character:
var characterName = tree.AssignedValue.ToString();
var character = objectDefinitions.Characters.SingleOrDefault(t => t.Name == characterName);
if (character == null)
{
log.Error(tokenizedLine, $"Cannot enter undefined character \"{characterName}\".");
}
else
{
var currentScene = currentFrame.Scene;
if (currentScene == null)
{
log.Error(tokenizedLine, $"Cannot enter character \"{characterName}\" outside of a scene. Please enter a scene first.");
}
else
{
log.Debug(tokenizedLine, $"Entered Character \"{characterName}\"");
currentScene.Characters.Add(character);
}
}
break;
case DeclaredType.Setting:
var settingName = tree.AssignedValue.ToString();
var setting = objectDefinitions.Settings.SingleOrDefault(t => t.Name == settingName);
if (setting == null)
{
log.Error(tokenizedLine, $"Cannot enter undefined setting \"{settingName}\".");
}
else
{
if (currentFrame.Setting != null)
{
log.Warning(tokenizedLine, $"Switching setting to \"{settingName}\" from current setting \"{currentFrame.Setting.Name}\".");
}
log.Debug(tokenizedLine, $"Entered setting \"{settingName}\"");
currentFrame.Setting = setting;
}
break;
default:
throw new InternalCompilerException($"Cannot enter declared type {tree.DeclaredType}");
}
}