private void Evaluate(ConfigParserResult parserResult)
{
using (Trace.WithIndent().Information("Evaluating configuration script"))
{
_compilation.Generate(parserResult.Declarations, parserResult.Body,
AssemblyLoader.ModuleTypes, _engine.Namespaces);
WriteScript(ConfigCompilation.AssemblyName, _compilation.Code);
_engine.RawAssemblies.Add(_compilation.Compile(_engine.Assemblies));
_compilation.Invoke(_engine);
}
}
public static ConfigParserResult Parse(string code, IPreprocessor preprocessor)
{
ConfigParserResult result = new ConfigParserResult();
List <string> lines = code.Replace("\r", "").Split(new[] { '\n' }, StringSplitOptions.None).ToList();
// Find all directives
for (int c = 0; c < lines.Count; c++)
{
if (lines[c].StartsWith("#"))
{
int firstSpace = lines[c].IndexOf(' ');
if (firstSpace != -1)
{
string directive = lines[c].Substring(1, firstSpace - 1);
if (preprocessor.ContainsDirective(directive))
{
result.DirectiveValues.Add(new DirectiveValue(c + 1, directive, lines[c].Substring(firstSpace + 1).Trim()));
lines[c] = "//" + lines[c]; // Just comment out the directive so it still shows in exports
}
}
}
}
// Get declarations
int startLine = 1;
int declarationLine = lines.FindIndex(x =>
{
string trimmed = x.TrimEnd();
return(trimmed.Length > 0 && trimmed.All(y => y == '-'));
});
if (declarationLine != -1)
{
List <string> declarationLines = lines.Take(declarationLine).ToList();
result.Declarations = $"#line {startLine}{Environment.NewLine}{string.Join(Environment.NewLine, declarationLines)}";
startLine += declarationLines.Count + 1;
lines.RemoveRange(0, declarationLine + 1);
}
// Get body
result.Body = $"#line {startLine}{Environment.NewLine}{string.Join(Environment.NewLine, lines)}";
return(result);
}
// Setup is separated from config by a line with only '-' characters
// If no such line exists, then the entire script is treated as config
public void Configure(string script)
{
CheckDisposed();
if (_configured)
{
throw new InvalidOperationException("Configuration has already been performed.");
}
_configured = true;
// Parse the script (or use an empty result if no script)
ConfigParserResult parserResult = string.IsNullOrWhiteSpace(script)
? new ConfigParserResult()
: ConfigParser.Parse(script, _preprocessor);
// Process preprocessor directives
_preprocessor.ProcessDirectives(this, parserResult.DirectiveValues);
// Initialize and evaluate the script
Initialize();
Evaluate(parserResult);
}