chushihua
This commit is contained in:
li
+346
@@ -0,0 +1,346 @@
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isPlainObject = require 'lodash/isPlainObject'
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defaultStyle = require './defaultStyle'
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ParsedError = require './ParsedError'
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nodePaths = require './nodePaths'
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RenderKid = require 'renderkid'
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merge = require 'lodash/merge'
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arrayUtils =
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pluckByCallback: (a, cb) ->
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return a if a.length < 1
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removed = 0
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for value, index in a
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if cb value, index
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removed++
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continue
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if removed isnt 0
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a[index - removed] = a[index]
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if removed > 0
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a.length = a.length - removed
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a
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pluckOneItem: (a, item) ->
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return a if a.length < 1
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reached = no
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for value, index in a
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if not reached
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if value is item
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reached = yes
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continue
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else
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a[index - 1] = a[index]
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a.length = a.length - 1 if reached
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a
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instance = null
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module.exports = class PrettyError
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self = @
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@_filters:
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'module.exports': (item) ->
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return unless item.what?
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item.what = item.what.replace /\.module\.exports\./g, ' - '
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return
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@_getDefaultStyle: ->
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defaultStyle()
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@start: ->
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unless instance?
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instance = new self
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instance.start()
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instance
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@stop: ->
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instance?.stop()
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constructor: ->
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@_useColors = yes
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@_maxItems = 50
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@_packagesToSkip = []
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@_pathsToSkip = []
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@_skipCallbacks = []
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@_filterCallbacks = []
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@_parsedErrorFilters = []
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@_aliases = []
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@_renderer = new RenderKid
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@_style = self._getDefaultStyle()
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@_renderer.style @_style
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start: ->
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@_oldPrepareStackTrace = Error.prepareStackTrace
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prepeare = @_oldPrepareStackTrace or (exc, frames) ->
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result = exc.toString()
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frames = frames.map (frame) -> " at #{frame.toString()}"
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result + "\n" + frames.join "\n"
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# https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi
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Error.prepareStackTrace = (exc, trace) =>
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stack = prepeare.apply(null, arguments)
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@render {stack, message: exc.toString().replace /^.*: /, ''}, no
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@
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stop: ->
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Error.prepareStackTrace = @_oldPrepareStackTrace
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@_oldPrepareStackTrace = null
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config: (c) ->
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if c.skipPackages?
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if c.skipPackages is no
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@unskipAllPackages()
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else
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@skipPackage.apply @, c.skipPackages
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if c.skipPaths?
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if c.skipPaths is no
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@unskipAllPaths()
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else
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@skipPath.apply @, c.skipPaths
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if c.skip?
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if c.skip is no
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@unskipAll()
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else
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@skip.apply @, c.skip
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if c.maxItems?
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@setMaxItems c.maxItems
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if c.skipNodeFiles is yes
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@skipNodeFiles()
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else if c.skipNodeFiles is no
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@unskipNodeFiles()
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if c.filters?
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if c.filters is no
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@removeAllFilters()
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else
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@filter.apply @, c.filters
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if c.parsedErrorFilters?
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if c.parsedErrorFilters is no
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@removeAllParsedErrorFilters()
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else
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@filterParsedError.apply @, c.parsedErrorFilters
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if c.aliases?
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if isPlainObject c.aliases
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@alias path, alias for path, alias of c.aliases
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else if c.aliases is no
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@removeAllAliases()
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@
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withoutColors: ->
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@_useColors = false
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@
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withColors: ->
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@_useColors = true
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@
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skipPackage: (packages...) ->
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@_packagesToSkip.push String pkg for pkg in packages
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@
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unskipPackage: (packages...) ->
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arrayUtils.pluckOneItem(@_packagesToSkip, pkg) for pkg in packages
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@
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unskipAllPackages: ->
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@_packagesToSkip.length = 0
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@
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skipPath: (paths...) ->
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@_pathsToSkip.push path for path in paths
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@
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unskipPath: (paths...) ->
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arrayUtils.pluckOneItem(@_pathsToSkip, path) for path in paths
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@
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unskipAllPaths: ->
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@_pathsToSkip.length = 0
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@
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skip: (callbacks...) ->
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@_skipCallbacks.push cb for cb in callbacks
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@
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unskip: (callbacks...) ->
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arrayUtils.pluckOneItem(@_skipCallbacks, cb) for cb in callbacks
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@
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unskipAll: ->
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@_skipCallbacks.length = 0
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@
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skipNodeFiles: ->
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@skipPath.apply @, nodePaths
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unskipNodeFiles: ->
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@unskipPath.apply @, nodePaths
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filter: (callbacks...) ->
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@_filterCallbacks.push cb for cb in callbacks
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@
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removeFilter: (callbacks...) ->
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arrayUtils.pluckOneItem(@_filterCallbacks, cb) for cb in callbacks
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@
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removeAllFilters: ->
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@_filterCallbacks.length = 0
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@
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filterParsedError: (callbacks...) ->
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@_parsedErrorFilters.push cb for cb in callbacks
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@
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removeParsedErrorFilter: (callbacks...) ->
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arrayUtils.pluckOneItem(@_parsedErrorFilters, cb) for cb in callbacks
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@
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removeAllParsedErrorFilters: ->
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@_parsedErrorFilters.length = 0
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@
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setMaxItems: (maxItems = 50) ->
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if maxItems is 0 then maxItems = 50
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@_maxItems = maxItems|0
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@
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alias: (stringOrRx, alias) ->
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@_aliases.push {stringOrRx, alias}
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@
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removeAlias: (stringOrRx) ->
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arrayUtils.pluckByCallback @_aliases, (pair) ->
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pair.stringOrRx is stringOrRx
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@
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removeAllAliases: ->
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@_aliases.length = 0
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@
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_getStyle: ->
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@_style
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appendStyle: (toAppend) ->
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merge @_style, toAppend
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@_renderer.style toAppend
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@
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_getRenderer: ->
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@_renderer
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render: (e, logIt = no, useColors = @_useColors) ->
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obj = @getObject e
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rendered = @_renderer.render(obj, useColors)
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console.error rendered if logIt is yes
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rendered
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getObject: (e) ->
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unless e instanceof ParsedError
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e = new ParsedError e
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@_applyParsedErrorFiltersOn e
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header =
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title: do ->
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ret = {}
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# some errors are thrown to display other errors.
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# we call them wrappers here.
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if e.wrapper isnt ''
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ret.wrapper = "#{e.wrapper}"
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ret.kind = e.kind
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ret
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colon: ':'
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message: String(e.message).trim()
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traceItems = []
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count = -1
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for item, i in e.trace
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continue unless item?
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continue if @_skipOrFilter(item, i) is yes
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count++
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break if count > @_maxItems
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if typeof item is 'string'
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traceItems.push item: custom: item
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continue
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traceItems.push do ->
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markupItem = item:
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header:
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pointer: do ->
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return '' unless item.file?
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file: item.file
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colon: ':'
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line: item.line
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footer: do ->
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foooter = addr: item.shortenedAddr
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if item.extra? then foooter.extra = item.extra
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foooter
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markupItem.item.header.what = item.what if typeof item.what is 'string' and item.what.trim().length > 0
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markupItem
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obj = 'pretty-error':
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header: header
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if traceItems.length > 0
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obj['pretty-error'].trace = traceItems
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obj
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_skipOrFilter: (item, itemNumber) ->
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if typeof item is 'object'
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return yes if item.modName in @_packagesToSkip
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return yes if item.path in @_pathsToSkip
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for modName in item.packages
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return yes if modName in @_packagesToSkip
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if typeof item.shortenedAddr is 'string'
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for pair in @_aliases
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item.shortenedAddr = item.shortenedAddr.replace pair.stringOrRx, pair.alias
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for cb in @_skipCallbacks
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return yes if cb(item, itemNumber) is yes
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for cb in @_filterCallbacks
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cb(item, itemNumber)
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return no
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_applyParsedErrorFiltersOn: (error) ->
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for cb in @_parsedErrorFilters
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cb error
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return
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for prop in ['renderer', 'style'] then do ->
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methodName = '_get' + prop[0].toUpperCase() + prop.substr(1, prop.length)
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PrettyError::__defineGetter__ prop, -> do @[methodName]
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