Bison Syntax Error Unexpected String Expecting
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Syntax Error Unexpected T_string Expecting T_variable In
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a minute: Sign up Bison unexpected indentifier error up vote 0 down vote favorite %{ #include
Syntax Error Unexpected T_string Expecting T_old_function Or T_function Or T_var
TOKLOGIN TOKPASSWORD VALUE SPACE NEWLINE input: auth input | input; delim: SPACE | NEWLINE; auth: TOKMACHINE delim VALUE delim TOKLOGIN delim VALUE delim TOKPASSWORD delim VALUE delim { printf("Found auth {%s,%s,%s}", $1,$3,$5); }; Here is simple bison grammar, with which I want to parse .netrc file. But I get error on input line: netrc.y:23.1-5: syntax error, unexpected identifier: I am new to Flex/Bison, but this example near literal copy from here c bison share|improve this question edited Aug 24 '12 at syntax error unexpected tidentifier expecting 18:28 Jens 36.2k863104 asked Aug 24 '12 at 18:18 KAction 1,035718 Line 23 is input: auth input | input;; columns 1-5 are the identifier input, which seems to be what it's complaining about. I don't remember bison well enough to figure out the problem. –Keith Thompson Aug 24 '12 at 18:25 This is anything but a near literal copy. Look at the original example exactly and you'll spot a handful of differences, all resulting in various errors. Yacc is unforgiving. –Jens Aug 24 '12 at 18:46 @Jens Of course, this question is about Bison, not Yacc, but they are part of the same bestiary... ;-) –twalberg Aug 24 '12 at 20:00 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote accepted Looks like you are missing the %% delimiter. Make that %} %token ... %% input : ... share|improve this answer answered Aug 24 '12 at 18:38 Jens 36.2k863104 I tried that myself on the OP's code. It gets rid of the error message but introduces several more, including fatal error: start symbol input does not derive any sentence. –Keith Thompson Aug 24 '12 at 18:41 That would spark another few questions, I guess :-) Contrary to the poster's claim, the referenced copy is vastly different. –Jens Aug 24 '12 at 18:44 Well, probably I was't right with literally word. It is close in sence
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more syntax error unexpected word expecting about Stack Overflow the company Business Learn more about hiring developers or posting ads syntax error unexpected expecting keyword_end with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack syntax error unexpected end expecting Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up bison unexpected identifier error up vote -1 down vote favorite I'm getting http://stackoverflow.com/questions/12114673/bison-unexpected-indentifier-error an "unexpected identifier error", at 1-9, on the line string_op | string_lit { $$ = $1; } here is my grammar %union { int intval; double dubval; char* strval; obj object; } %token
topics Evaluation software Community Events Search developerWorks developerWorksTechnical topicsLinuxTechnical library Better error handling using Flex and BisonTips for building more user-friendly compilers http://www.ibm.com/developerworks/library/l-flexbison/ and interpreters Although it is easy to generate programs using Flex and Bison, it is a bit harder to make those programs produce user-friendly syntax and http://www.linuxquestions.org/questions/programming-9/bison-parser-won't-parse-a-simple-program-379460/ semantic error messages. This article examines the error-handling features of Flex and Bison, shows how to use them, and details some pitfalls. PDF (209 KB) syntax error | Share: Christian Hagen (chagen@de.ibm.com), Senior IT Architect, IBM Close [x] Christian Hagen is a Senior IT Architect with IBM Global Business Services, Application Services. Although he works as an IT architect, he likes to go back to the basics and do some programming. 28 July 2006 Also available inRussian Table of syntax error unexpected contents Introduction Sample source files Sample with plain error messages Extending Bison for better error messages A better input function Bison's location mechanism Conclusion Download Resources Comments IntroductionAs UNIX® developers know, Flex and Bison are powerful tools for developing lexical and grammar parsers, in particular language compilers and interpreters. If you're unfamiliar with these utilities or the tools they implement -- Lex and Yacc, respectively -- check the Resources section in this article for links to the Flex and Bison documentation and to additional articles that introduce both programs.This article covers a somewhat more advanced topic: features and techniques for putting better error-handling capabilities into your compiler or interpreter. To illustrate these techniques, I use a sample program called ccalc, which implements an enhanced calculator based on the infix calculator from the Bison handbook. You can download ccalc and associated files from the Download section at the end of this article.The enhanc
Search HCL Search Reviews Search ISOs Go to Page... LinuxQuestions.org > Forums > Non-*NIX Forums > Programming Bison Parser won't parse a simple program User Name Remember Me? Password Programming This forum is for all programming questions. The question does not have to be directly related to Linux and any language is fair game. Notices Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions.org? Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here. Having a problem logging in? Please visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. Search this Thread 11-02-2005, 11:08 PM #1 oulevon Member Registered: Feb 2001 Location: Boston, USA Distribution: Slackware Posts: 437 Rep: Bison Parser won't parse a simple program Hi, I'm trying to write a scanner and parser for a subset of Pascal, using Flex and Bison. I keep getting the following error, and I'm not sure why. If anyone knows what's wrong with