generating program structure (nodes) using bison and flex

Posted by gruszczy on Stack Overflow See other posts from Stack Overflow or by gruszczy
Published on 2010-06-13T17:59:41Z Indexed on 2010/06/14 10:02 UTC
Read the original article Hit count: 389

Filed under:

bison

|

gnu-flex

|

pretty-printer

I would like to write myself a pretty printer for java using bison and flex. I have written a pretty printer for a script language, but I was only writing visitors, which made the printing. How can I turn a program using my formal grammar into a tree of nodes (made using C++ classes), that afterwards I could visit using my visitor? Maybe you could give me some link with an example of this? What i need to put into flex/bison files?

© Stack Overflow or respective owner

Related posts about bison

ANTLR grammar from bison

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I'm trying to translate a grammar from bison to ANTLR. The grammar itself is pretty simple in bison but I cannot find a simple way for doing this. Grammar in bison: expr = expr or expr | expr and expr | (expr) Any hints/links/pointers are welcome. Thanks, Iulian >>> More
How do i implement If statement in Flex/bison

as seen on Stack Overflow - Search for 'Stack Overflow'
Hallo, I need help in flex/bison. Im a beginner in flex/bison, and i hav already looked out these programs and somethings i inderstood, but im learning. My problem is, i want to implement a If-statement via Flex/Bison and i dont know how to start how to do, someone any idea, im very thankful for all… >>> More
Filter y.output from bison or yacc?

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using bison and its difficult to figure out the conflicts by looking at y.output. Is there a tool to make or filter y.output so its more useful? i would love to see the full path to the state with the conflict but anything helpful is what i would like. >>> More
rules precedence in bison

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Here is the grammar rules: ProcessExpression : EventExpression "->" ProcessExpression | ProcessName ; Please can you tell me how can I tell to bison that the first rule has the highest precedence than the second one? I have tried: %nonassoc PROC %right "->" ProcessExpression… >>> More
how to instruct bison that I'm expecting TWO or more terminals

as seen on Stack Overflow - Search for 'Stack Overflow'
How can I define a rule in BISON that will state that I need two or more terminals. I use it like this and I get a shift/reduce conflict: word: LETTER | word LETTER; words: word word | words word; What's wrong here? And how to correct it? >>> More

Related posts about gnu-flex

GNU Flex, multiline rule

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi there i have a flex rule inside my lexer definition : operators "[]"|"[]="|"[]<"|".."|"."|".="|"+"|"+="|"-"|"-="|"/"|"/="|"*"|"*="|"%"|"%="|"++"|"--"|"^"|"^="|"~"|"&"|"&="|"|"|"|="|"<<"|"<<="|">>"|"!"|"<"|">"|">="|"<="|"=="|"!="|"&&"|"||"|"~=" Is… >>> More
How do you compile gnu flex in Visual Studio 2005/2008?

as seen on Stack Overflow - Search for 'Stack Overflow'
I can't figure this one out. I can download a win32 binary of flex 2.5.4a from gnuwin32, but I'd like to build the latest version (2.5.35) using Visual Studio 2005. I suppose I could build in in cygwin, but where is the fun in that? http://flex.sourceforge.net/ >>> More
FLEX/BISON : Why my rule is not regonized ?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am trying to do a little exercice in FLEX and BISON. Here is the code I wrote : calc_pol.y %{ #define YYSTYPE double #include "calc_pol.tab.h" #include <math.h> #include <stdlib.h> %} %start line %token NOMBRE %token FIN %% line: exp '\n' { printf("\t%.2lf\n", $1); }; exp: exp… >>> More
Bison: Optional tokens in a single rule.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi there .. i'm using GNU Bison 2.4.2 to write a grammar for a new language i'm working on and i have a question. When i specify a rule, let's say : statement : T_CLASS T_IDENT '{' T_CLASS_MEMBERS '}' { // create a node for the statement ... } If i have a variation on the rule, for… >>> More
Error compiling flex (the lexical analyzer)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to install flex on my Windows computer. I have MSYS installed. I untar flex, ./configure it, but when I try to make it, I get this error: In file included from ccl.c:34: flexdef.h:94:19: error: regex.h: No such file or directory In file included from ccl.c:34: flexdef.h:1195: error: expected… >>> More