Funcky.Lexer 0.9.4

.NET 5.0 This package targets .NET 5.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Funcky.Lexer --version 0.9.4
                    


                    

                
NuGet\Install-Package Funcky.Lexer -Version 0.9.4
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Funcky.Lexer" Version="0.9.4" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Funcky.Lexer" Version="0.9.4" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Funcky.Lexer" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Funcky.Lexer --version 0.9.4
                    


                    

                
#r "nuget: Funcky.Lexer, 0.9.4"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Funcky.Lexer@0.9.4
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Funcky.Lexer&version=0.9.4
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Funcky.Lexer&version=0.9.4
                    


                            Install as a Cake Tool

Funcky.Lexer

Can you write a lexer in a single expression? Now you can.

Build Licence: MIT Licence: Apache

Packages

  • Funcky.Lexer NuGet package

Example

Define your tokens by marking them with the IToken interface.

public record PlusToken : IToken;
public record MinusToken : IToken;
public record MultiplicationToken : IToken;
public record DivisionToken : IToken;

You have to define an EpsilonToken marked with the IEpsilonToken interface. This will be returned by the LexerReader when you read past the end.

public record EpsilonToken : IEpsilonToken;

Create the rules how you want to lex the tokens.

LexerResult result = LexerRuleBook.Builder
    .AddRule(char.IsDigit, ScanNumber)
    .AddSimpleRule<PlusToken>("+")
    .AddSimpleRule<MinusToken>("-")
    .AddSimpleRule<MultiplicationToken>("*")
    .AddSimpleRule<DivisionToken>("/")
    .WithEpsilonToken<EpsilonToken>()
    .Build()
    .Scan("40+20*6");

Use the lexeme-builder to build any token you want.

private static Lexeme ScanNumber(ILexemeBuilder builder)
    => builder.Peek().Match(none: false, some: char.IsDigit)
        ? ScanNumber(builder.Retain())
        : builder.Build(new NumberToken(int.Parse(builder.CurrentToken)));

Create a rulebook

You always start with an empty LexerRuleBook.Builder

Build a lexeme

Line position calculation

Lexemes dependent on context

Non-default implementations

Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • net5.0

    • Funcky (>= 3.3.0 && < 4.0.0)

  • net7.0

    • Funcky (>= 3.3.0 && < 4.0.0)

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.0.0 2,733 3/19/2024
1.0.0 451 9/8/2023
0.9.7 210 9/8/2023
0.9.6 224 9/8/2023
0.9.5 216 9/7/2023
0.9.4 191 9/7/2023
0.9.3 219 9/7/2023
0.9.2 227 9/6/2023
0.9.1 226 9/6/2023
0.9.0 207 9/6/2023