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Local Macro PPRINT-EXIT-IF-LIST-EXHAUSTED

Syntax

  • pprint-exit-if-list-exhaustednil

Arguments and Values

None.

Description

Tests whether or not the list passed to the lexically current logical block has been exhausted; see section {\secref\DynamicControlofOutput}. If this list has been reduced to nil, pprint-exit-if-list-exhausted terminates the execution of the lexically current logical block except for the printing of the suffix. Otherwise pprint-exit-if-list-exhausted returns nil.

Whether or not pprint-exit-if-list-exhausted is fbound in the global environment is implementation-dependent; however, the restrictions on redefinition and shadowing of pprint-exit-if-list-exhausted are the same as for symbols in the common-lisp package which are fbound in the global environment. The consequences of attempting to use pprint-exit-if-list-exhausted outside of pprint-logical-block are undefined.

Examples

None.

Side Effects

None.

Affected By

None.

Exceptional Situations

An error is signaled (at macro expansion time or at run time) if pprint-exit-if-list-exhausted is used anywhere other than lexically within a call on pprint-logical-block.

Also, the consequences of executing pprint-if-list-exhausted outside of the dynamic extent of the pprint-logical-block which lexically contains it are undefined.

See Also

Notes

None.

\issue{PRETTY-PRINT-INTERFACE} \issue{LEXICAL-CONSTRUCT-GLOBAL-DEFINITION:UNDEFINED}