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by: cylin |
last post by:
Dear all,
I am a newbie using lex and yacc.
I really don't know what's wrong with my code, because the output is not
what I want.
My yacc rules don't match, and yylex seems just read only one line of the
text file.
Please help...thx.
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by: Rodrick Brown |
last post by:
This might be off topic but can someone give me a quick run down on why
tools like lexx/yacc/bison are usefull ?
I know what there used for but not sure when they should be used and where ?
Thanks.
--
Rodrick R. Brown
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by: SSG |
last post by:
I tried one lex, yacc program, but it says the error
yacc: e - line 349 of "comp_y.y", a token appears on the lhs of a
production
can anyone tell me about the error..
How to solve it...
By
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by: John Sasso |
last post by:
In my Yacc .y file I defined:
%union {
int value;
struct Symbol Sym;
}
The Symbol struct I defined in a header file I #included in the Prologue
section of the .y file as:
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by: ajaxjinx |
last post by:
%token NUMBER
%token LETTER
%start cmd
%%
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by: Berk Birand |
last post by:
Hi,
I am working on a school project where we use lex/yacc to write a compiler
for a fictional (Java-like) language. I have handled all the details about
the yacc and lex files, but I still have a question regarding the dynamic
memory allocation for strings. When the lex file encounters a variable
name, I want it to pass this to yacc through yylval, and then
retrieve it to add to a syntax tree. For this purpose, I wrote the
following...
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by: Mohitz |
last post by:
Hi Guys,
I am facing a peculiar problem with my yacc script. Following is the
snippet of the yacc script that i am using.
I am using lex as the lexical analyzer.
Sample Input :
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by: betterking |
last post by:
I want to write a tiny sql parser with lex and yacc. At first I just
write sql.l sql.y with simple CREATE TABLE funciton.
sql.l
%{
#include "y.tab.h" //<>
#include <stdlib.h>
#include <string.h>
void yyerror(char *);
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by: latif87 |
last post by:
An example of how the XML file is structured:
<xml>
<farm name="NAME1">
<size x="INTEGER1" y="INTEGER2" />
<neighbor name="NAME2" />
<crop name="PLANT" area="INTEGER3" />
<crop … />
…
</farm>
<farm name="NAME2" …>
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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