lucy-codegen

lucy-codegen

A library for auto-generating source code in different programming languages. Useful for creating SDKs and sample code.

Supported Languages

• JavaScript
• NodeJS
• Ruby
• PHP

In Progress

• Java
• Python
• cURL

Project Overview

Generators

Generators are contained in the generators/ directory. Each generator takes in a language and generates sample code for achieving some goal in that language:

• Request: Generates code for making an HTTP request
• App: Generates code for serving a Single Page Application

You can see samples of the generated code in the test/golden directory

Languages

Languages are described in the langs/ directory. Each language is expected to implement certain fields and functions for generating code in that language. For instance, JavaScript has the following implementation:

var JS = {
    name: 'javascript',
    label: 'JavaScript',
    extension: '.js',
    nulltype: 'null',
}

JS.comment = function(str) { return '// ' + str }

JS.for = function(iter) {
  return iter.group + '.forEach(function(' + iter.iterator + ', index) {';
}
JS.rof = function(iter) {
  return '});'
}
JS.if = function(cond) {
  return 'if(' + cond +') {'
}
JS.fi = function(cond) {
  return '}'
}

Languages are expected to implement the following fields and functions:

• name: Should match the language's subdirectory
• label: A human-readable label for this language
• extension: The default file extension for this language
• nulltype: A string that represents a null value
• comment(str): A comment block containing the given text
• for(cond): The opening of a for() loop
• rof(cond): The end of a for() loop
• if(cond): The opening of an if() statement
• fi(cond): The end of an if() statement
• variable(name): Turns JS syntax (e.g. js foo.bar[3].baz ) into syntax for this language
• literal(literal): Turn a JSON serializable object into code for describing it as a literal in this language
• concat(strings): Code to concatenate the provided strings
• jsonEncode(variable): Code to convert variable to a JSON string
• html: A set of functions for generating HTML templates in this language (e.g. EJS for Node, ERB for Ruby)
• html.for(cond)
• html.rof(cond)
• html.if(cond)
• html.fi(cond)
• html.variable(name)
• html.variableJS(name)
• app: A set of instructions for building code that serves a Single Page Application