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