| |
by: Profetas |
last post by:
Hi.
I was wondering how can I access the yacc functions?
because when use a normal yacc function such as
qstring {
yylval.string = strdup(yytext+1);
if(yylval.string !='"')
warning("Undeterminated Character strig",(char
*)0);
else
|
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
|
by: Volker Hetzer |
last post by:
Hi!
We are finding ourselves in a situation where we have to parse
several more or less free format text files.
In the past, on linux, we had flex and bison for generating
very fast parsers for these files.
Is there any equivalent in the visual studio world?
Lots of Greetings!
Volker
--
|
by: deepusrp |
last post by:
Helo everyone,
i am doing a project on some graphic tool using qt as
the front end. i am using lex and yacc as parser.
now i am facing a problem since yacc generates only c
code as i want to bring c++ features. so my request
is " is there any way that we can create parser in qt
itself or is there any method by which i can make a
c++ (yacc) Parser... "
|
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...
|
| |
by: max.giacometti |
last post by:
Hi everybody!
I am using lex and yacc to write a vhdl to systemc converter.
Lex simply reads the input file and yacc implements grammar and
translation.
I'd like to be able to make yacc able to command lex to stop reading
the current file and starting reading another file, when the inclusion
syntax is reached.
|
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 :
|
by: neena.usenet |
last post by:
I have a gui that reads in a file using C++/yacc. If the file has a
parsing error, yacc throws the error to my program and I report it.
The problem is at that point, I would like to try to open a different
file, one that has no syntax errors. When I try to open this second
file, yacc throws me another error which I believe is leftover from
parsing the first file.
How do I clear the yacc "error stack"?
|
by: thomas |
last post by:
hello I m writing a simple parser using bison. I just used someone's else
c++ grammar, to produce a code beutifier. The thing is , most of the actions
for productions would have form
{$$ = $1 + $2 + $3} and so forth depending on number of terminals in
production. Is it possible to set default action for all the productions
like the one above ? It is something strange to type this formula for over
200 productions.
|
by: Robert |
last post by:
If the goal is to take a 1-dimensional package of text and produce a
tree data structure that is easy to understand and manipulate, and
then write C/C++ code that works with that tree - does lex/yacc suit
that purpose - i.e. kind of like a tree-manufacturing C library? Or is
it for producing a compiler/interpreter the internals of which a new C/
C++ program cannot so easily work with?
|
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...
|
| |
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
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...
|
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...
|
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();...
|
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...
|
| |
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
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...
|
