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6bbc783f48
Lots of code refactoring, simplification and cleanup. Lots of new unit-tests providing much higher code coverage. All courtesy of rillig at netbsd. Other significant changes: o new read-only variable .SHELL which provides the path of the shell used to run scripts (as defined by the .SHELL target). o new debug option -dl: LINT mode, does the equivalent of := for all variable assignments so that file and line number are reported for variable parse errors.
180 lines
7.1 KiB
C
180 lines
7.1 KiB
C
/* $NetBSD: lst.h,v 1.60 2020/09/02 23:33:13 rillig Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)lst.h 8.1 (Berkeley) 6/6/93
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*/
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/*
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* Copyright (c) 1988, 1989 by Adam de Boor
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)lst.h 8.1 (Berkeley) 6/6/93
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*/
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/* Doubly-linked lists of arbitrary pointers. */
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#ifndef MAKE_LST_H
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#define MAKE_LST_H
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#include <sys/param.h>
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#include <stdlib.h>
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/* A doubly-linked list of pointers. */
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typedef struct List *Lst;
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/* A single node in the doubly-linked list. */
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typedef struct ListNode *LstNode;
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/* Copy a node, usually by allocating a copy of the given object.
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* For reference-counted objects, the original object may need to be
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* modified, therefore the parameter is not const. */
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typedef void *LstCopyProc(void *);
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/* Free the datum of a node, called before freeing the node itself. */
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typedef void LstFreeProc(void *);
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/* Return TRUE if the datum matches the args, for Lst_Find. */
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typedef Boolean LstFindProc(const void *datum, const void *args);
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/* An action for Lst_ForEach. */
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typedef int LstActionProc(void *datum, void *args);
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/* Create or destroy a list */
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/* Create a new list. */
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Lst Lst_Init(void);
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/* Duplicate an existing list. */
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Lst Lst_Copy(Lst, LstCopyProc);
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/* Free the list, leaving the node data unmodified. */
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void Lst_Free(Lst);
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/* Free the list, freeing the node data using the given function. */
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void Lst_Destroy(Lst, LstFreeProc);
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/* Get information about a list */
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Boolean Lst_IsEmpty(Lst);
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/* Return the first node of the list, or NULL. */
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LstNode Lst_First(Lst);
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/* Return the last node of the list, or NULL. */
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LstNode Lst_Last(Lst);
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/* Find the first node for which the function returns TRUE, or NULL. */
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LstNode Lst_Find(Lst, LstFindProc, const void *);
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/* Find the first node for which the function returns TRUE, or NULL.
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* The search starts at the given node, towards the end of the list. */
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LstNode Lst_FindFrom(Lst, LstNode, LstFindProc, const void *);
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/* Find the first node that contains the given datum, or NULL. */
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LstNode Lst_FindDatum(Lst, const void *);
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/* Modify a list */
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/* Insert a datum before the given node. */
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void Lst_InsertBefore(Lst, LstNode, void *);
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/* Place a datum at the front of the list. */
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void Lst_Prepend(Lst, void *);
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/* Place a datum at the end of the list. */
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void Lst_Append(Lst, void *);
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/* Remove the node from the list. */
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void Lst_Remove(Lst, LstNode);
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void Lst_PrependAll(Lst, Lst);
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void Lst_AppendAll(Lst, Lst);
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void Lst_MoveAll(Lst, Lst);
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/* Node-specific functions */
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/* Return the successor of the node, or NULL. */
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LstNode LstNode_Next(LstNode);
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/* Return the predecessor of the node, or NULL. */
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LstNode LstNode_Prev(LstNode);
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/* Return the datum of the node. Usually not NULL. */
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void *LstNode_Datum(LstNode);
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/* Replace the value of the node. */
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void LstNode_Set(LstNode, void *);
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/* Set the value of the node to NULL. Having NULL in a list is unusual. */
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void LstNode_SetNull(LstNode);
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/* Iterating over a list, using a callback function */
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/* Apply a function to each datum of the list, until the callback function
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* returns non-zero. */
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int Lst_ForEach(Lst, LstActionProc, void *);
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/* Apply a function to each datum of the list, starting at the node,
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* until the callback function returns non-zero. */
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int Lst_ForEachFrom(Lst, LstNode, LstActionProc, void *);
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/* Iterating over a list while keeping track of the current node and possible
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* concurrent modifications */
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/* Start iterating the list. */
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void Lst_Open(Lst);
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/* Return the next node, or NULL. */
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LstNode Lst_Next(Lst);
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/* Finish iterating the list. */
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void Lst_Close(Lst);
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/* Using the list as a queue */
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/* Add a datum at the tail of the queue. */
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void Lst_Enqueue(Lst, void *);
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/* Remove the head node of the queue and return its datum. */
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void *Lst_Dequeue(Lst);
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#endif /* MAKE_LST_H */
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