ensuring-compiled-body

Arguments: &body body

This macro is like progn, in that is executes the forms in body sequentially, but when a ensuring-compiled-body form is encountered in interpreted code, it wraps the code body in a lambda, processes it with compile-lambda-expr-in-env, and funcalls the result.

Here is this macro being used by the Allegro CL implementation of cl:time, as an example of its use:

(defmacro time (form)
  `(ensuring-compiled-body
    (excl::time-a-funcall #'excl::time-report *trace-output*
                    #'(lambda () ,form))))

See Compiling individual forms or groups of forms in compiling.htm.

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Created 2012.5.30.