private static MethodDeclarationSyntax GenerateGetExecutorMember(CodeSchema.CodeFunction codeFunction)
{
List <string> argumentFetches = new List <string>();
foreach (var argument in codeFunction.Arguments)
{
argumentFetches.Add($"await oDrive.PushValue<{argument.Type}>({argument.EndpointID}, {argument.Name});");
}
var returnType = string.IsNullOrEmpty(codeFunction.ReturnType) ? "Task" : $"Task<{codeFunction.ReturnType}>";
bool hasReturn = !string.IsNullOrEmpty(codeFunction.ReturnType);
var parameters = string.Join(",", GetParameterList(codeFunction.Arguments));
var oDriveMethod = hasReturn ? "RequestValue" : "InvokeEndpoint";
// TODO: Figure out why this template is putting the last semicolon on a new line...
// TODO: Could parallel the fetches if there are multiple arguments
string template = $@"
public ExecutionDelegate GetExecutor(IDevice oDrive) {{
return async ({parameters}) =>
{{
{string.Join(Environment.NewLine, argumentFetches)}
{(hasReturn ? "return " : "")} await oDrive.{oDriveMethod}{(hasReturn ? $"<{codeFunction.ReturnType}>" : "")}({codeFunction.EndpointID});
}};
}}
";
return(((CompilationUnitSyntax)ParseSyntaxTree(template).GetRoot()).Members[0] as MethodDeclarationSyntax);
}
private static MemberDeclarationSyntax GenerateDelegateMember(CodeSchema.CodeFunction codeFunction)
{
var returnType = string.IsNullOrEmpty(codeFunction.ReturnType) ? "Task" : $"Task<{codeFunction.ReturnType}>";
var parameters = string.Join(",", GetParameterList(codeFunction.Arguments));
string template = $@"public delegate {returnType} ExecutionDelegate({parameters});";
return(((CompilationUnitSyntax)ParseSyntaxTree(template).GetRoot()).Members[0] as MemberDeclarationSyntax);
}
public static ClassDeclarationSyntax Generate(CodeSchema.CodeFunction codeFunction)
{
string methodOrFunction = string.IsNullOrEmpty(codeFunction.ReturnType) ? "Method" : "Function";
string className = $"{codeFunction.Name}{methodOrFunction}";
var classDeclaration = ClassDeclaration(className)
.AddModifiers(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.PartialKeyword))
.AddBaseListTypes(SimpleBaseType(ParseTypeName($"IExecutableMember<{className}.ExecutionDelegate>")))
.AddMembers(GenerateDelegateMember(codeFunction))
.AddMembers(GenerateGetExecutorMember(codeFunction));
// var currentCode = ((SyntaxNode)classDeclaration).NormalizeWhitespace().ToFullString();
return(classDeclaration);
}
