cfy/index.js

Use generators and yield to write regular callback-based functions

// Generated by LiveScript 1.5.0
(function(){
  var co, unthenify, add_noerr, yfy, yfy_node, yfy_multi, yfy_multi_node, cfy, cfy_varargs, cfy_node, cfy_varargs_node, k, ref$, v, out$ = typeof exports != 'undefined' && exports || this, slice$ = [].slice;
  co = require('co');
  unthenify = require('unthenify');
  out$.add_noerr = add_noerr = function(callback){
    return function(cb){
      return callback(function(res){
        return cb(null, res);
      });
    };
  };
  out$.yfy = yfy = function(f){
    return function(){
      var functionArguments, res$, i$, to$, self;
      res$ = [];
      for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
        res$.push(arguments[i$]);
      }
      functionArguments = res$;
      self = this;
      return new Promise(function(resolve, reject){
        var callbackFunction;
        callbackFunction = function(){
          var args, res$, i$, to$;
          res$ = [];
          for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
            res$.push(arguments[i$]);
          }
          args = res$;
          return resolve(args[0]);
        };
        functionArguments.push(callbackFunction);
        return f.apply(self, functionArguments);
      });
    };
  };
  out$.yfy_node = yfy_node = function(f){
    return function(){
      var functionArguments, res$, i$, to$, self;
      res$ = [];
      for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
        res$.push(arguments[i$]);
      }
      functionArguments = res$;
      self = this;
      return new Promise(function(resolve, reject){
        var callbackFunction;
        callbackFunction = function(){
          var args, res$, i$, to$, err;
          res$ = [];
          for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
            res$.push(arguments[i$]);
          }
          args = res$;
          err = args[0];
          if (err) {
            return reject(err);
          }
          return resolve(args[1]);
        };
        functionArguments.push(callbackFunction);
        return f.apply(self, functionArguments);
      });
    };
  };
  out$.yfy_multi = yfy_multi = function(f){
    return function(){
      var functionArguments, res$, i$, to$, self;
      res$ = [];
      for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
        res$.push(arguments[i$]);
      }
      functionArguments = res$;
      self = this;
      return new Promise(function(resolve, reject){
        var callbackFunction;
        callbackFunction = function(){
          var args, res$, i$, to$;
          res$ = [];
          for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
            res$.push(arguments[i$]);
          }
          args = res$;
          return resolve(args);
        };
        functionArguments.push(callbackFunction);
        return f.apply(self, functionArguments);
      });
    };
  };
  out$.yfy_multi_node = yfy_multi_node = function(f){
    return function(){
      var functionArguments, res$, i$, to$, self;
      res$ = [];
      for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
        res$.push(arguments[i$]);
      }
      functionArguments = res$;
      self = this;
      return new Promise(function(resolve, reject){
        var callbackFunction;
        callbackFunction = function(){
          var args, res$, i$, to$, err;
          res$ = [];
          for (i$ = 0, to$ = arguments.length; i$ < to$; ++i$) {
            res$.push(arguments[i$]);
          }
          args = res$;
          err = args[0];
          if (err) {
            return reject(err);
          }
          return resolve(args.slice(1));
        };
        functionArguments.push(callbackFunction);
        return f.apply(self, functionArguments);
      });
    };
  };
  out$.cfy = cfy = function(f, options){
    var num_args, wrapped;
    num_args = f.length;
    if (options != null) {
      if (options.varargs != null) {
        return cfy_varargs(f);
      }
      if (options.num_args != null) {
        num_args = options.num_args;
      }
    }
    wrapped = co.wrap(f);
    return function(){
      var i$, args, res$, j$, callback;
      res$ = [];
      for (j$ = 0 < (i$ = arguments.length - 1) ? 0 : (i$ = 0); j$ < i$; ++j$) {
        res$.push(arguments[j$]);
      }
      args = res$; callback = arguments[i$];
      if (args.length === num_args && typeof callback === 'function') {
        return wrapped.bind(this).apply(null, args).then(callback);
      } else {
        return wrapped.bind(this).apply(null, slice$.call(args).concat([callback]));
      }
    };
  };
  cfy_varargs = function(f){
    var wrapped;
    wrapped = co.wrap(f);
    return function(){
      var i$, args, res$, j$, callback;
      res$ = [];
      for (j$ = 0 < (i$ = arguments.length - 1) ? 0 : (i$ = 0); j$ < i$; ++j$) {
        res$.push(arguments[j$]);
      }
      args = res$; callback = arguments[i$];
      if (typeof callback === 'function') {
        return wrapped.bind(this).apply(null, args).then(callback);
      } else {
        return wrapped.bind(this).apply(null, slice$.call(args).concat([callback]));
      }
    };
  };
  out$.cfy_node = cfy_node = function(f, options){
    var num_args, wrapped, wrapped_cb;
    num_args = f.length;
    if (options != null) {
      if (options.varargs != null) {
        return cfy_varargs_node(f);
      }
      if (options.num_args != null) {
        num_args = options.num_args;
      }
    }
    wrapped = co.wrap(f);
    wrapped_cb = unthenify(wrapped);
    return function(){
      var i$, args, res$, j$, callback;
      res$ = [];
      for (j$ = 0 < (i$ = arguments.length - 1) ? 0 : (i$ = 0); j$ < i$; ++j$) {
        res$.push(arguments[j$]);
      }
      args = res$; callback = arguments[i$];
      if (args.length === num_args && typeof callback === 'function') {
        return wrapped_cb.bind(this).apply(null, slice$.call(args).concat([callback]));
      } else {
        return wrapped.bind(this).apply(null, slice$.call(args).concat([callback]));
      }
    };
  };
  cfy_varargs_node = function(f){
    var wrapped, wrapped_cb;
    wrapped = co.wrap(f);
    wrapped_cb = unthenify(wrapped);
    return function(){
      var i$, args, res$, j$, callback;
      res$ = [];
      for (j$ = 0 < (i$ = arguments.length - 1) ? 0 : (i$ = 0); j$ < i$; ++j$) {
        res$.push(arguments[j$]);
      }
      args = res$; callback = arguments[i$];
      if (typeof callback === 'function') {
        return wrapped_cb.bind(this).apply(null, slice$.call(args).concat([callback]));
      } else {
        return wrapped.bind(this).apply(null, slice$.call(args).concat([callback]));
      }
    };
  };
  for (k in ref$ = module.exports) {
    v = ref$[k];
    cfy[k] = v;
  }
  module.exports = cfy;
}).call(this);