jsedn/lib/encode.js

js implementation of edn

// Generated by CoffeeScript 1.6.1
(function() {
  var encode, encodeHandlers, encodeJson, tokenHandlers, type;

  type = require("./type");

  tokenHandlers = require("./tokens").tokenHandlers;

  encodeHandlers = {
    array: {
      test: function(obj) {
        return type(obj) === "array";
      },
      action: function(obj) {
        var v;
        return "[" + (((function() {
          var _i, _len, _results;
          _results = [];
          for (_i = 0, _len = obj.length; _i < _len; _i++) {
            v = obj[_i];
            _results.push(encode(v));
          }
          return _results;
        })()).join(" ")) + "]";
      }
    },
    integer: {
      test: function(obj) {
        return type(obj) === "number" && tokenHandlers.integer.pattern.test(obj);
      },
      action: function(obj) {
        return parseInt(obj);
      }
    },
    float: {
      test: function(obj) {
        return type(obj) === "number" && tokenHandlers.float.pattern.test(obj);
      },
      action: function(obj) {
        return parseFloat(obj);
      }
    },
    string: {
      test: function(obj) {
        return type(obj) === "string";
      },
      action: function(obj) {
        return "\"" + (obj.toString().replace(/"|\\/g, '\\$&')) + "\"";
      }
    },
    boolean: {
      test: function(obj) {
        return type(obj) === "boolean";
      },
      action: function(obj) {
        if (obj) {
          return "true";
        } else {
          return "false";
        }
      }
    },
    "null": {
      test: function(obj) {
        return type(obj) === "null";
      },
      action: function(obj) {
        return "nil";
      }
    },
    date: {
      test: function(obj) {
        return type(obj) === "date";
      },
      action: function(obj) {
        return "#inst \"" + (obj.toISOString()) + "\"";
      }
    },
    object: {
      test: function(obj) {
        return type(obj) === "object";
      },
      action: function(obj) {
        var k, result, v;
        result = [];
        for (k in obj) {
          v = obj[k];
          result.push(encode(k));
          result.push(encode(v));
        }
        return "{" + (result.join(" ")) + "}";
      }
    }
  };

  encode = function(obj) {
    var handler, name;
    if ((obj != null ? obj.ednEncode : void 0) != null) {
      return obj.ednEncode();
    }
    for (name in encodeHandlers) {
      handler = encodeHandlers[name];
      if (handler.test(obj)) {
        return handler.action(obj);
      }
    }
    throw "unhandled encoding for " + (JSON.stringify(obj));
  };

  encodeJson = function(obj, prettyPrint) {
    if (obj.jsonEncode != null) {
      return encodeJson(obj.jsonEncode(), prettyPrint);
    }
    if (prettyPrint) {
      return JSON.stringify(obj, null, 4);
    } else {
      return JSON.stringify(obj);
    }
  };

  module.exports = {
    encodeHandlers: encodeHandlers,
    encode: encode,
    encodeJson: encodeJson
  };

}).call(this);