diff options
Diffstat (limited to 'node_modules/errno/custom.js')
-rw-r--r-- | node_modules/errno/custom.js | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/node_modules/errno/custom.js b/node_modules/errno/custom.js new file mode 100644 index 000000000..7be16c1e4 --- /dev/null +++ b/node_modules/errno/custom.js @@ -0,0 +1,55 @@ +var prr = require('prr') + +function init (type, message, cause) { + prr(this, { + type : type + , name : type + // can be passed just a 'cause' + , cause : typeof message != 'string' ? message : cause + , message : !!message && typeof message != 'string' ? message.message : message + + }, 'ewr') +} + +// generic prototype, not intended to be actually used - helpful for `instanceof` +function CustomError (message, cause) { + Error.call(this) + if (Error.captureStackTrace) + Error.captureStackTrace(this, arguments.callee) + init.call(this, 'CustomError', message, cause) +} + +CustomError.prototype = new Error() + +function createError (errno, type, proto) { + var err = function (message, cause) { + init.call(this, type, message, cause) + //TODO: the specificity here is stupid, errno should be available everywhere + if (type == 'FilesystemError') { + this.code = this.cause.code + this.path = this.cause.path + this.errno = this.cause.errno + this.message = + (errno.errno[this.cause.errno] + ? errno.errno[this.cause.errno].description + : this.cause.message) + + (this.cause.path ? ' [' + this.cause.path + ']' : '') + } + Error.call(this) + if (Error.captureStackTrace) + Error.captureStackTrace(this, arguments.callee) + } + err.prototype = !!proto ? new proto() : new CustomError() + return err +} + +module.exports = function (errno) { + var ce = function (type, proto) { + return createError(errno, type, proto) + } + return { + CustomError : CustomError + , FilesystemError : ce('FilesystemError') + , createError : ce + } +} |