codecombat/app/lib/world/errors.coffee
2014-01-03 10:32:13 -08:00

46 lines
1.7 KiB
CoffeeScript

Vector = require './vector'
module.exports.ArgumentError = class ArgumentError extends Error
@className: "ArgumentError"
constructor: (@message, @functionName, @argumentName, @intendedType, @actualValue, @numArguments) ->
super message
@name = "ArgumentError"
if Error.captureStackTrace?
Error.captureStackTrace @, @constructor
toString: ->
s = "#{@functionName}"
if @argumentName is "return"
s += "'s return value"
else if @argumentName is "_excess"
s += " takes only #{@numArguments} argument#{if @numArguments > 1 then 's' else ''}."
else if @argumentName
s += "'s argument #{@argumentName}"
else
s += " takes no arguments."
actualType = typeof @actualValue
if not @actualValue?
actualType = 'null'
else if _.isArray @actualValue
actualType = 'array'
typeMismatch = @intendedType and not @intendedType.match actualType
if typeMismatch
v = ""
if actualType is 'string'
v = "\"#{@actualValue}\""
else if actualType is "number"
if Math.round(@actualValue) is @actualValue then @actualValue else @actualValue.toFixed(2)
else if actualType is "boolean"
v = "#{@actualValue}"
else if (@actualValue? and @actualValue.id and @actualValue.trackedPropertiesKeys)
# (Don't import Thang, but determine whether it is Thang.)
v = @actualValue.toString()
else if @actualValue instanceof Vector
v = @actualValue.toString()
showValue = showValue or @actualValue instanceof Vector
s += " should have type #{@intendedType}, but got #{actualType}#{if v then ': ' + v else ''}."
else if @argumentName and @argumentName isnt "_excess"
s += " has a problem."
s += '\n' + @message if @message
s