{"record":{"id":"d927149bbb30aa9b","repo":"bchavez/Bogus","slug":"the-method-call-methodcall-is-missing-a-termin","errorCode":null,"errorMessage":"The method call '{methodCall}' is missing a terminating ')' character.","messagePattern":"The method call '(.+?)' is missing a terminating '\\)' character\\.","errorType":"exception","errorClass":"ArgumentException","httpStatus":null,"severity":"error","filePath":"Source/Bogus/Tokenizer.cs","lineNumber":176,"sourceCode":"   }\n\n   private static object GetValueForParameter(ParameterInfo parameterInfo, string parameterValue)\n   {\n      var type = Nullable.GetUnderlyingType(parameterInfo.ParameterType) ?? parameterInfo.ParameterType;\n\n      if( typeof(Enum).IsAssignableFrom(type)) return Enum.Parse(type, parameterValue);\n\n      if( typeof(TimeSpan) == type ) return TimeSpan.Parse(parameterValue);\n\n      return Convert.ChangeType(parameterValue, type);\n   }\n\n   private static string GetArgumentsString(string methodCall, int parametersStart)\n   {\n      var parametersEnd = methodCall.IndexOf(')');\n      if( parametersEnd == -1 )\n      {\n         throw new ArgumentException($\"The method call '{methodCall}' is missing a terminating ')' character.\");\n      }\n\n      return methodCall.Substring(parametersStart + 1, parametersEnd - parametersStart - 1);\n   }\n}\n\n[AttributeUsage(AttributeTargets.Property)]\ninternal class RegisterMustasheMethodsAttribute : Attribute;","sourceCodeStart":158,"sourceCodeEnd":184,"githubUrl":"https://github.com/bchavez/Bogus/blob/6ece18c5c22648ab4606e45a0aaf2f07fc5259e4/Source/Bogus/Tokenizer.cs#L158-L184","documentation":"Thrown by Tokenizer.GetArgumentsString (Tokenizer.cs:176). Once ParseMustashText sees an opening '(' it enters argument mode and asks GetArgumentsString for the text up to the first ')'. If no ')' exists in the call text it throws ArgumentException. The tokenizer found an argument list opener but the call never closes.","triggerScenarios":"A token with '(' but no matching ')': {{random.number(5}} (forgot the paren), {{name.lastname(}}, or a copy-paste that dropped the closing characters. Because the parser locates the outer '}}' first with IndexOf, any stray content can consume the intended ')'.","commonSituations":"Hand-authoring templates; a templating/config layer that strips trailing punctuation and silently removes ')'; nested/malformed handlebars where '}}' appears before the intended ')'.","solutions":["Ensure every {{category.method(...)}} has a ')' before the closing '}}'.","Run a paren-balance/shape check on the template before parsing.","If you don't need arguments, omit the parentheses entirely: {{random.number}} selects the 0-arg overload and never enters argument mode."],"exampleFix":"// before\nfaker.Parse(\"{{random.number(5}}\");\n// after\nfaker.Parse(\"{{random.number(5,100)}}\");","handlingStrategy":"validation","validationCode":"// Verify every token that opens '(' also closes ')' before the '}}'.\nstatic bool TemplatesWellFormed(string tpl)\n{\n    foreach (Match m in Regex.Matches(tpl, @\"\\{\\{(.*?)\\}\\}\"))\n    {\n        var body = m.Groups[1].Value;\n        if (body.Contains('(') && !body.Contains(')')) return false;\n    }\n    return true;\n}","typeGuard":null,"tryCatchPattern":"try { var s = faker.Parse(tpl); }\ncatch (ArgumentException ex) when (ex.Message.Contains(\"missing a terminating ')'\"))\n{\n    throw new InvalidOperationException($\"Malformed handlebar (no closing paren) in template: {tpl}\", ex);\n}","preventionTips":["For no-argument calls, drop the parentheses: {{random.number}} is valid and avoids this path entirely.","Add a unit test that parses every template constant at startup to catch truncation early.","Watch for config/templating layers that strip trailing punctuation and silently eat ')'."],"tags":["mustache-template","syntax","parentheses","tokenizer"],"backgroundTag":null,"analyzedSha":"6ece18c5c22648ab4606e45a0aaf2f07fc5259e4","analyzedAt":"2026-08-13T21:08:15.463Z","schemaVersion":2},"datasetVersion":"2026-08-14T00:17:13.853Z"}