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Fewer algorithmic complexity surprises, nicer errors, mapcarX(), maplist() src/ChangeLog addition: 2010-09-01 Aidan Kehoe <kehoea@parhasard.net> * fns.c (list_merge, list_array_merge_into_list) (list_array_merge_into_array): Avoid algorithmic complexity surprises when checking for circularity in these functions. (Freduce): Fix some formatting, in passing. (mapcarX): Drop the SOME_OR_EVERY argument to this function; instead, take CALLER, a symbol reflecting the Lisp-visible function that called mapcarX(). Use CALLER with mapping_interaction_error() when sequences are modified illegally. Don't cons with #'some, #'every, not even a little. (Fmapconcat, FmapcarX, Fmapvector, Fmapcan, Fmapc, Fmap) (Fmap_into, Fsome, Fevery): Call mapcarX() with its new arguments. (Fmapcan): Don't unnecessarily complicate the nconc call. (maplist): Take CALLER, a symbol reflecting the Lisp-visible function that called maplist(), rather than having separate arguments to indicate mapl vs. mapcon. Avoid algorithmic complexity surprises when checking for circularity. In #'mapcon, check a given stretch of result for well-formedness once, which was not previously the case, despite what the comments said. (Fmaplist, Fmapl, Fmapcon): Call maplist() with its new arguments.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 01 Sep 2010 12:51:32 +0100
parents ce0b3f2eff35
children
line wrap: on
line source

/*
 * Copyright (c) 2000, Red Hat, Inc.
 *
 *     This program is free software; you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation; either version 2 of the License, or
 *     (at your option) any later version.
 *
 *     A copy of the GNU General Public License can be found at
 *     http://www.gnu.org/
 *
 * Written by DJ Delorie <dj@cygnus.com>
 *
 */

/* When setup.ini is parsed, the information is stored according to
   the declarations here.  ini.cc (via inilex and iniparse)
   initializes these structures.  choose.cc sets the action and trust
   fields.  download.cc downloads any needed files for selected
   packages (the chosen "install" field).  install.cc installs
   selected packages. */

#define YYSTYPE char *

/* lowest number must be most trusted, highest least trusted */
#define TRUST_PREV		0
#define TRUST_CURR		1
#define TRUST_TEST		2
#define NTRUST 3
#define TRUST_UNKNOWN		3 /* intentionally not in NTRUST */

#define TY_GENERIC		0
#define TY_CYGWIN		1
#define TY_NATIVE		2

#define ACTION_UNKNOWN		0
#define ACTION_SAME		1
#define ACTION_NEW		2
#define ACTION_UPGRADE		3
#define ACTION_UNINSTALL	4
#define ACTION_ERROR		5

#define SRCACTION_NO		0
#define SRCACTION_YES		1

typedef struct {
  char *name;	/* package name, like "cygwin" */
  char *sdesc;	/* short description (replaces "name" if provided) */
  char *ldesc;	/* long description (multi-line) */
  int action;	/* ACTION_* - only NEW and UPGRADE get installed */
  int srcaction;/* SRCACTION_ */
  int trust;	/* TRUST_* (selects among info[] below) */
  int type;	/* TY_GENERIC, TY_CYGWIN or TY_NATIVE. */

  struct {
    char *version;	/* version part of filename */
    char *install;	/* file name to install */
    int install_size;	/* in bytes */
    char *source;	/* sources for installed binaries */
    int source_size;	/* in bytes */
  } info[NTRUST+1];	/* +1 for TRUST_UNKNOWN */
} Package;

#ifdef __cplusplus
extern "C" {
#endif

extern Package *package;
extern Package *xemacs_package;

extern int npackages;

Package *new_package (char *name);
void	ini_init (char *string);

#define pinfo(p) ((p).info[(p).trust])
#define pi pinfo(package[i])

#define LOOP_PACKAGES \
  for (i=0; i<npackages; i++) \
    if ((package[i].action == ACTION_NEW \
	 || package[i].action == ACTION_UPGRADE) \
	&& pi.install)

#ifdef __cplusplus
}
#endif