How to create a small json lib using antlr and shapeless

• sbt-antlr4

  0 48 0.0 Scala

  Antlr4 plugin for sbt 1.1+ and 0.13.x

  Now we are ready to create a new project. For project building i'll use sbt, but it is also possible to use maven or gradle. After project creation we need to add antlr4 compiler plugin – sbt-antlr4. Also, we will need a shapeless for codec derivation, so let's add this library too. After all, plugins.sbt and build.sbt will look like this:

• grammars-v4

  11 7,516 9.7 ANTLR

  Grammars written for ANTLR v4; expectation that the grammars are free of actions.

  

  First of all, we need a grammar. I think, that the best place for exploring grammars and take some ideas is grammars-v4. There are a lot of grammar examples, but we need a special one – json.

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• ANTLR

  4 12,112 9.7 Java

  ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

  

  We will change it a little bit soon, but for now let's look on what's going on there. In general, grammar consists of parser and lexer rules.

• json-serde

  0 0 0.0 Scala

  Example of usage antlr4 and shapeless

  The source code of a whole project could be found here: https://github.com/nryanov/json-serde

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