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Diffstat (limited to 'doc/examples/stack.m4')
| -rw-r--r-- | doc/examples/stack.m4 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/doc/examples/stack.m4 b/doc/examples/stack.m4 new file mode 100644 index 00000000..c1b98333 --- /dev/null +++ b/doc/examples/stack.m4 @@ -0,0 +1,16 @@ +divert(`-1') +# stack_foreach(macro, action) +# Invoke ACTION with a single argument of each definition +# from the definition stack of MACRO, starting with the oldest. +define(`stack_foreach', +`_stack_reverse(`$1', `tmp-$1')'dnl +`_stack_reverse(`tmp-$1', `$1', `$2(defn(`$1'))')') +# stack_foreach_lifo(macro, action) +# Invoke ACTION with a single argument of each definition +# from the definition stack of MACRO, starting with the newest. +define(`stack_foreach_lifo', +`_stack_reverse(`$1', `tmp-$1', `$2(defn(`$1'))')'dnl +`_stack_reverse(`tmp-$1', `$1')') +define(`_stack_reverse', +`ifdef(`$1', `pushdef(`$2', defn(`$1'))$3`'popdef(`$1')$0($@)')') +divert`'dnl |