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# dmd.backend.dlist

Interface to the C linked list type.
List is a complete package of functions to deal with singly linked lists of pointers or integers.

Features

1. Uses mem package. 2. Has loop-back tests. 3. Each item in the list can have multiple predecessors, enabling different lists to 'share' a common tail.
Authors:
Walter Bright
License:
Boost License 1.0

Source backend/dlist.d

nothrow @nogc list_t `list_next`(list_t `list`);
  Returns:
  pointer to next entry in list.
nothrow @nogc inout(void)* `list_ptr`(inout list_t `list`);
  Returns:
  ptr from list entry.
nothrow @nogc int `list_data`(list_t `list`);
  Returns:
  integer item from list entry.
nothrow @nogc void `list_prependdata`(list_t* `plist`, int `d`);
  Prepend integer item to list.
nothrow @nogc void `list_free`(list_t* `plist`, list_free_fp `freeptr`);
  Free list.
  Parameters:

  list_t* `plist` | Pointer to list to free
  list_free_fp `freeptr` | Pointer to freeing function for the data pointer (use FPNULL if none)

  Output *plist is null

nothrow @nogc void* `list_subtract`(list_t* `plist`, void* `ptr`);
  Remove ptr from the list pointed to by *plist.

  Output *plist is updated to be the start of the new list

  Returns:
  null if *plist is null otherwise ptr
nothrow @nogc void* `list_pop`(list_t* `plist`);
  Remove first element in list pointed to by *plist.
  Returns:
  First element, null if *plist is null
nothrow @nogc list_t `list_append`(list_t* `plist`, void* `ptr`);
  Append ptr to *plist.
  Returns:
  pointer to list item created. null if out of memory
nothrow @nogc list_t `list_prepend`(list_t* `plist`, void* `ptr`);
  Prepend ptr to *plist.
  Returns:
  pointer to list item created (which is also the start of the list). null if out of memory
nothrow @nogc int `list_nitems`(list_t `list`);
  Count up and return number of items in list.
  Returns:
  # of entries in list
nothrow @nogc list_t `list_nth`(list_t `list`, int `n`);
  Returns:
  nth list entry in list.
nothrow @nogc int `list_equal`(list_t `list1`, list_t `list2`);
  Compare two lists.
  Returns:
  If they have the same ptrs, return 1 else 0.
nothrow @nogc list_t `list_inlist`(list_t `list`, void* `ptr`);
  Search for ptr in list.
  Returns:
  If found, return list entry that it is, else null.
nothrow @nogc void `list_apply`(list_t* `plist`, void function(void*) nothrow @nogc `fp`);
  Apply a function fp to each member of a list.
nothrow @nogc list_t `list_reverse`(list_t `l`);
  Reverse a list in place.
struct `ListRange`;
  Range for Lists.

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