/// <summary>
/// Generates a program and a derived string table from the
/// contents of a string.
/// </summary>
/// <param name="text">The source code of the program.</param>
/// <param name="fileName">The file name to assign to the compiled
/// results.</param>
/// <param name="program">On return, contains the compiled
/// program.</param>
/// <param name="stringTable">On return, contains the string table
/// generated from the source code.</param>
/// <returns>The status of the compilation.</returns>
/// <exception cref="ParseException">Thrown when a parse error
/// occurs during compilation.</exception>
public static Status CompileString(string text, string fileName, out Program program, out IDictionary <string, StringInfo> stringTable)
{
ICharStream input = CharStreams.fromstring(text);
YarnSpinnerLexer lexer = new YarnSpinnerLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
YarnSpinnerParser parser = new YarnSpinnerParser(tokens);
// turning off the normal error listener and using ours
parser.RemoveErrorListeners();
parser.AddErrorListener(ParserErrorListener.Instance);
lexer.RemoveErrorListeners();
lexer.AddErrorListener(LexerErrorListener.Instance);
IParseTree tree;
try
{
tree = parser.dialogue();
} catch (ParseException e)
{
var tokenStringList = new List <string>();
tokens.Reset();
foreach (var token in tokens.GetTokens())
{
tokenStringList.Add($"{token.Line}:{token.Column} {YarnSpinnerLexer.DefaultVocabulary.GetDisplayName(token.Type)} \"{token.Text}\"");
}
throw new ParseException($"{e.Message}\n\nTokens:\n{string.Join("\n", tokenStringList)}");
}
Compiler compiler = new Compiler(fileName);
compiler.Compile(tree);
program = compiler.Program;
stringTable = compiler.StringTable;
if (compiler.containsImplicitStringTags)
{
return(Status.SucceededUntaggedStrings);
}
else
{
return(Status.Succeeded);
}
}
private static IParseTree ParseSyntaxTree(CompilationJob.File file)
{
ICharStream input = CharStreams.fromstring(file.Source);
YarnSpinnerLexer lexer = new YarnSpinnerLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
YarnSpinnerParser parser = new YarnSpinnerParser(tokens);
// turning off the normal error listener and using ours
parser.RemoveErrorListeners();
parser.AddErrorListener(ParserErrorListener.Instance);
lexer.RemoveErrorListeners();
lexer.AddErrorListener(LexerErrorListener.Instance);
IParseTree tree;
try
{
tree = parser.dialogue();
}
catch (ParseException e)
{
#if DEBUG
var tokenStringList = new List <string>();
tokens.Reset();
foreach (var token in tokens.GetTokens())
{
tokenStringList.Add($"{token.Line}:{token.Column} {YarnSpinnerLexer.DefaultVocabulary.GetDisplayName(token.Type)} \"{token.Text}\"");
}
throw new ParseException(e.Context, $"{e.Message}\n\nTokens:\n{string.Join("\n", tokenStringList)}", file.FileName);
#else
throw new ParseException(e.Context, e.Message, file.FileName);
#endif // DEBUG
}
return(tree);
}