private void Execute(GeneratorExecutionContext context, AdditionalText file)
{
CFG grammar = CFGParser.Parse(file.GetText().ToString());
grammar = grammar.ApplyOptions(GetOptions(context, file)).ToGreibachNormalForm();
CFGSubtypingAPIGenerator generator = new CFGSubtypingAPIGenerator(grammar, Path.GetFileNameWithoutExtension(file.Path),
GetBoolConfiguration("FluentAPI", context, file));
context.AddSource(generator.NamespaceName(), SourceText.From(generator.PrintAPI(), Encoding.UTF8));
}
public static void Main(String[] args)
{
var options = new SomeOptions();
Parser.Default.ParseArguments <SomeOptions>(args).WithParsed(parsed => options = parsed);
if (options.Input == null || options.Name == null)
{
return;
}
CFG grammar = null;
try
{
grammar = CFGParser.Parse(File.ReadAllText(options.Input));
} catch (Exception e)
{
Console.WriteLine($"Could not parse file {options.Input}:\n{e.Message}");
return;
}
try
{
if (options.Fluent)
{
grammar = grammar.Reversed();
}
} catch (Exception e)
{
Console.WriteLine($"Error when reversing grammar:\n{e.Message}");
return;
}
try
{
grammar = grammar.ToGreibachNormalForm();
} catch (Exception e)
{
Console.WriteLine($"Error when converting grammar to Greibach normal form:\n{e.Message}");
return;
}
string result = null;
try
{
result = new CFGSubtypingAPIGenerator(grammar, options.Name, options.Fluent).PrintAPI();
}
catch (Exception e)
{
Console.WriteLine($"Error when generating API:\n{e.Message}");
return;
}
try
{
if (options.Output == null)
{
Console.WriteLine(result);
}
else
{
File.WriteAllText(options.Output, result);
}
}
catch (Exception e)
{
Console.WriteLine($"Error when writing output:\n{e.Message}");
return;
}
}