https://github.com/dk14/typed-template

this macro generates parsers from specified grammars
https://github.com/dk14/typed-template

ast grammar macros parse scala

Last synced: 25 days ago
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this macro generates parsers from specified grammars

• Host: GitHub
• URL: https://github.com/dk14/typed-template
• Owner: dk14
• Created: 2014-09-24T13:44:51.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2018-02-17T03:56:34.000Z (over 8 years ago)
• Last Synced: 2025-02-20T16:43:25.012Z (over 1 year ago)
• Topics: ast, grammar, macros, parse, scala
• Language: Scala
• Homepage:
• Size: 416 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
typed-template

==============

This macro generates parser from user-friendly external grammar.

AST returned from such parser will be typesafe (tree of case classes)

Example

Grammar:

    instrument {name} is Option

    exercise at {exerciseDate: String} {automatic: String}

      {optionsCount: String} options with strike {strike: String}

      with {count: String} underlyer

      pay premium {premium: String} from {partyFrom: String} to {partyTo: String} at {premiumDate: String}

  

Input:

    instrument Equity is Option

      exercise at 10500/10/10 automatic

      20 options with strike 100

      with one underlyer

      pay premium 100500 from DB to NEDB at 10500/10/10  

Usage:

   

    @generator(source = "option.template") object Env

    Env.parse(instrument)

Output AST: 

    Env.Option(

      Env.ExerciseDate(10500/10/10,automatic),

      Env.OptionsCount(20,100),

      Env.Count(one),

      Env.Premium(100500,DB,NEDB,10500/10/10)

    )

    

Try: 

    

    git clone https://github.com/dk14/typed-template.git

    brew install sbt

    sbt

    ;clean;test/runMain Test

    

Note: macroparadise must be added in client module to use this macro 

    autoCompilerPlugins := true,

    resolvers in ThisBuild  += Resolver.sonatypeRepo("releases"),

    libraryDependencies += "org.scalamacros" % "paradise" % "2.0.1" cross CrossVersion.full,

    addCompilerPlugin("org.scalamacros" % "paradise" % "2.0.1" cross CrossVersion.full)