@protobufjs/codegen

A minimalistic code generation utility.

API

• codegen([functionParams: string[]], [functionName: string]): Codegen Begins generating a function.

• codegen.verbose = false When set to true, codegen will log generated code to console. Useful for debugging.

Invoking codegen returns an appender function that appends code to the function's body and returns itself:

• Codegen(formatString: string, [...formatParams: any]): Codegen Appends code to the function's body. The format string can contain placeholders specifying the types of inserted format parameters:

  • %d: Number (integer or floating point value)
  • %f: Floating point value
  • %i: Integer value
  • %j: JSON.stringify'ed value
  • %s: String value
  • %%: Percent sign

• Codegen([scope: Object.<string,*>]): Function Finishes the function and returns it.

• Codegen.toString([functionNameOverride: string]): string Returns the function as a string.

Example

var codegen = require("@protobufjs/codegen");

var add = codegen(["a", "b"], "add") // A function with parameters "a" and "b" named "add"
  ("// awesome comment")             // adds the line to the function's body
  ("return a + b - c + %d", 1)       // replaces %d with 1 and adds the line to the body
  ({ c: 1 });                        // adds "c" with a value of 1 to the function's scope

console.log(add.toString()); // function add(a, b) { return a + b - c + 1 }
console.log(add(1, 2));      // calculates 1 + 2 - 1 + 1 = 3

License: BSD 3-Clause License