Step 1. Parses any input fed to the compiler. Parsing behaviour can be customized by providing a specific ParserSettings instance through CompilerParameters.Environment.
상속: ICompilerStep
		static Module Parse(string fileName, string fileContent)
		{
			BooParsingStep step = new BooParsingStep();
			
			StringBuilder errors = new StringBuilder();
			Module module = BooParser.ParseModule(4, new CompileUnit(), fileName,
			                                      new StringReader(fileContent),
			                                      delegate(antlr.RecognitionException e) {
			                                      	errors.AppendLine(e.ToString());
			                                      });
			
			if (errors.Length > 0) {
				throw new FormsDesignerLoadException("Syntax errors in " + fileName + ":\r\n" + errors.ToString());
			}
			return module;
		}
        private void AddNamespaceImports(Import node)
        {
            RemoveCurrentNode();

            string url = GetFilePath(node);
            using(TextReader reader = urlResolver(url, baseDirectory))
            {
                BooParsingStep parser = new BooParsingStep();
                CompilerContext context = new CompilerContext();
                StringInput input = new StringInput(node.AssemblyReference.Name, reader.ReadToEnd());
                context.Parameters.Input.Add(input);
                parser.Initialize(context);
                parser.Run();
                Module current = (Module) node.GetAncestor(NodeType.Module);
                foreach (Module module in context.CompileUnit.Modules)
                {
                    foreach (Import import in module.Imports)
                    {
                        current.Imports.Add(import);
                    }
                }
            }
        }