logo
Tags down

shadow

Why does parser generated by ANTLR reuse context objects?


By : user2176712
Date : October 14 2020, 02:15 PM
I wish this help you I'm trying to create an interpreter for a simple programming language using ANTLR. I would like to add the feature of recursion. ,
Why does parser generated by ANTLR reuse context objects?
code :
function f(x) {
  return f(x);
}
print(f(x));
| left=numericexpression op=('*'|'/') right=numericexpression #MulOrDiv
| left=numericexpression op=('+'|'-') right=numericexpression #PlusOrMinus


Share : facebook icon twitter icon

Scala parser combinators vs ANTLR/Java generated parser?


By : user3074758
Date : March 29 2020, 07:55 AM
To fix this issue Scala's parser combinators aren't very efficient. They weren't designed to be. They're good for doing small tasks with relatively small inputs.
So it really depends on your requirements. There shouldn't be any interop problems with ANTLR. Calling Scala from Java can get hairy, but calling Java from Scala almost always just works.

How to add attribute to ANTLR generated C parser?


By : user3683129
Date : March 29 2020, 07:55 AM
hope this fix your issue One possible solution is to use ANTLR named scopes instead of a global member section.
The following implementation should correspond to what you are looking for:
code :
scope GlobalScope
{
    ParserHelper* parserHelper;
}

rootRule
scope GlobalScope
@init {
  // Initialize the scope attributes
  // Somehow retrieve or create a PointerHelper (you can eventually pass it by an argument of the rootRule)
  $GlobalScope::parserHelper = ...;
}
:
...
;

constant_declaration 
:   'const' type_specifier ID ('[' constant_expression ']')? '=' initializer
    {
        $GlobalScope::parserHelper->addConstant($type_specifier.text, $ID.text);
    }
;

how can I test a parser generated by antlr v4?


By : NatC
Date : March 29 2020, 07:55 AM
help you fix your problem You need to test that all the available correct samples you can lay your hands on are parsed successfully, and that as many error cases you can reasonably and economically find or create produce parsing errors. The former is a lot more important than the latter. Yu oh also he'd t check that the obvious things like operator precedence and if/else shift-reduce conflicts are handled correctly, via testing of whatever the output is.

issue in the generated parser with ANTLR 4.7.1


By : Michal
Date : March 29 2020, 07:55 AM
around this issue Look in your grammar. You have to identify the start rule you want to go with. Usually the start rule is near the top of the file and/or is one of the few (or only one) that is not called by any other rule.
Whatever rule you choose it will return a parse tree context, which forms the root of your parse tree, e.g.
code :
ParseTree tree = parser.start();

How do I use antlr generated parser and lexer?


By : Pranit Joshi
Date : March 29 2020, 07:55 AM
To fix this issue If you're going to venture further, I recommend The Definitive Antlr 4 Reference. From the Antlr documentation, you can download/see some sample code, including this:
Related Posts Related Posts :
  • How to make custom user claims be available in API requests
  • SharpZipLib throw System.IO.FileNotFoundException on commit update
  • C# - check if substring is present in arraylist of strings
  • SSIS Script Task move all files not working
  • Unhandled exception occurs after handling exception
  • Reading selected checkboxes as int
  • Why projection is not including navigation nested properties in EF Core 2.0?
  • Structure to XML C# WinForms
  • Manipulate textbox on gridview C#
  • C# similar bitwise operations resulting in different answers
  • Linq to SQL Random Timeouts on Simple Small Queries
  • Return type as IEnumerable instead of just List?
  • How to get transient DbContext in ASP.NET MVC Core?
  • Grouping data in ViewModel ASP.NET MVC & C#
  • Using a parameter's property in an ArgumentException
  • EF Unable to determine the relationship represented by navigation property
  • Moq: running flows with FluentValidation
  • "Reset" switch statement after value is equal
  • What does the question mark followed by a period mean if it is next to a variable?
  • How to P/Invoke os_log?
  • Deep copy object properties (including those with private setter) to another object of the same type
  • How to generate new back colour if two object's back colour match?
  • How to calculate percentage of value inside arbitrary range?
  • typeof(T) when T is dynamically created is null?
  • Run the application faster with Run Query at Start
  • c# code returns System.Data.DataSet instead of Data itself?
  • Compile binaries to multiple versions of .NET Framework using Bazel
  • How to hide table rows in a DataList if column data returns null from SQL Server
  • Exception handling with lambda/linq statements
  • Creating a meal Cost calculator C#
  • Plugin Failing on D365 v9 Online when I just have tracers to test execution
  • ASP.NET MVC Deleting row from one table after copying it to another table
  • Error VSSDK1001: Unable to find Microsoft.VisualStudio.CommandTable.VSCTCompiler type
  • Trying to fetch a string from another form but i get string value null
  • Entity Framework equivalent of the following query?
  • How do I get projection of one list to another with Linq?
  • I am using Alpha Vantage API to try and pull daily stock info. I am really new to using APIs and don't know what I am do
  • Get column names and types out of XMLSchema
  • Unable to read large log file with MemoryMappedViewStream
  • looping through file to add to datagridview
  • C# How do I ask for Admin, without "forcing" him
  • System.ComponentModel.Win32Exception: "The system cannot find the file specified"
  • How to add list to SQL query?
  • Visitor pattern: Number arithmetics based on input
  • How to remove a single DataLabel from a Chart made with EPPlus and C#
  • GameObjects will not load after game Restarts
  • Getting all dates between two dates using datepickers and Entity Framework 6
  • What should TResult be when using public async Task to return json response from API HTTP Post
  • Automapper Sub Property Mapping
  • reading a json file exception "Unhandled Exception: System.TypeInitializationException: The type initializer for &q
  • How to get MacOS username in .NET Core console app?
  • How can I extract the first word of every line of a text file in C#
  • HttpClient isn't using Client Certificate for Mutual TLS Auth
  • How do I make a generic dictionary for multiple types implementing the same interface?
  • C# Form add controls on runtime
  • C# - program about while loop
  • Accessing variables in other Windows Form class C#
  • How to display tooltip / context menu from Run object in (wpf) RichTextBox
  • How to get a 0 before a datetime day when the day is below 10 in C#
  • Nothing shows when I tried to fill Combobox with .csv filenames
  • shadow
    Privacy Policy - Terms - Contact Us © voile276.org