DESTRUCTURING-BIND*

The standard DESTRUCTURING-BIND signals an error of type ERROR when the destructuring fails. That's not too specific of a condition if you want to catch specifically destructuring errors, eh?

The macro DESTRUCTURING-BIND* available from this system instead signals a custom error of type DESTRUCTURING-ERROR which contains readers for the expression that was attempted to be destructured, the lambda-expression that was destructured against, and the original error that was signaled during destructuring.

Exports

• Macro DESTRUCTURING-BIND*
• Condition Type DESTRUCTURING-ERROR
  • Reader LAMBDA-LIST
  • Reader EXPRESSION
  • Reader REASON

Usage

Either use the DESTRUCTURING-BIND-STAR package and call the DESTRUCTURING-BIND* macro, or shadow the DESTRUCTURING-BIND symbol and:

(setf (macro-function 'destructuring-bind)
      (macro-function 'destructuring-bind-star:destructuring-bind*))

MIT License

Copyright © 2018 Michał "phoe" Herda.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.