diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 41 |
1 files changed, 31 insertions, 10 deletions
@@ -41539,7 +41539,7 @@ only the exception arguments are passed to the clauses of .coNP Macro @ with-resources .synb -.mets (with-resources >> ({ sym >> [ init-form <> [ cleanup-form ])}*) +.mets (with-resources >> ({ sym >> [ init-form <> [ cleanup-form *])}*) .mets \ \ << body-form *) .syne .desc @@ -41567,27 +41567,48 @@ is bound to the value If an .meta init-form is supplied, but no -.metn cleanup-form , +.metn cleanup-form -s, then .meta sym is bound to the value of the .metn init-form . -If a -.meta cleanup-form -is supplied in addition to +If one or more +.metn cleanup-form -s +are supplied in addition to .metn init-form , -it specifies code to be executed upon the termination of the -entire +they specifies forms to be executed upon the termination of the .code with-resources construct. When an instance of .code with-resources -terminates, all of the +terminates, either normally or by a non-local control transfer, +then for each +.meta sym +whose +.meta init-form +had executed, thus causing that +.code sym +to be bound to a value, the .metn cleanup-form -s -specified in its binding clauses are evaluated, in reverse (right-to-left) -order. The value of the last +corresponding to +.meta sym +are evaluated in the usual left-to-right order. + +The +.metn sym -s +are cleaned up in reverse (right-to-left) order. The +.metn cleanup-form -s +of the most recently bound +.meta sym +are processed first; those of the least recently bound +.meta sym +are processed last. + +When the +.code with-resources +form terminates normally, the value of the last .meta body-form is returned, or else .code nil |