bison

I compiled my bison-generated files in Visual Studio and got these errors: ...\position.hh(83): error C2589: '(' : illegal token on right side of '::' ...\position.hh(83): error C2059: syntax error : '::' ...\position.hh(83): error C2589: '(' : illegal token on right side of '::' ...\position.hh(83): error C2059: syntax error : '::' The corresponding code is: inline void columns (int count = 1) { column = std::max (1u, column + count); } I think the problem is with std::max; if I change std::max to equivalent code then there is no problem anymore, but is there a better solution instead of

I am making a parser with Bison and Flex and I want to create a "goto label" statement, but I want to check if the label exists in the same block of code (between brackets { }, loop, etc). Is there a function that checks such things? Your question implies that you are missing some background context in building language translators/compilers, so perhaps a small tutorial will assist you in solving your problem. I hope you don't mind. The processing of computer languages is conventionally divided up into a sequence of steps (sometimes called phases or passes). Each step handles a component of

The grammar is as follows: 1. program -> declaration-list 2. declaration-list -> declaration-list declaration | declaration 3. declaration -> var-declaration | fun-declaration 4. var-declaration -> type-specifier ID ; | type-specifier ID [ NUM ] ; 5. type-specifier -> int | void 6. fun-declaration -> type-specifier ID ( params ) compound-stmt 7. params -> param-list | void 8. param-list -> param-list , param | param 9. param -> type-specifier ID | type-specifier ID [ ] 10. compound-stmt -> { local-declarations statement-list } 11. local-declarations -> local-declarations var-declarations |

I've used lex and yacc (more usually bison) in the past for various projects, usually translators (such as a subset of EDIF streamed into an EDA app). Additionally, I've had to support code based on lex/yacc grammars dating back decades. So I know my way around the tools, though I'm no expert. I've seen positive comments about Antlr in various fora in the past, and I'm curious as to what I may be missing. So if you've used both, please tell me what's better or more advanced in Antlr. My current constraints are that I work in a C++ shop, and any product we ship will not include Java, so the

I am trying to include a struct as part of the union with Bison, but I get an error on the 'struct node args' in %union: parser.y:17: error: field ‘args’ has incomplete type The Code: struct node { char * val; struct node * next; }; %} %union { char * string; struct node args; } %token <string> CD WORD PWD EXIT %type <args> arg_list Anyone know what I am doing wrong? Even better, use the %code directive with the "requires" option, i.e.: %code requires { struct node { char * val; struct node * next; }; } %union { char * string; struct node args; } This will include the code in the "requires"