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Diffstat (limited to 'bin/1sh/nodes.c.pat')
| -rw-r--r-- | bin/1sh/nodes.c.pat | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/bin/1sh/nodes.c.pat b/bin/1sh/nodes.c.pat deleted file mode 100644 index b687b570..00000000 --- a/bin/1sh/nodes.c.pat +++ /dev/null @@ -1,193 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Kenneth Almquist. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)nodes.c.pat 8.2 (Berkeley) 5/4/95 - * $FreeBSD: releng/12.1/bin/sh/nodes.c.pat 314436 2017-02-28 23:42:47Z imp $ - */ - -#include <sys/param.h> -#include <stdlib.h> -#include <stddef.h> -/* - * Routine for dealing with parsed shell commands. - */ - -#include "shell.h" -#include "nodes.h" -#include "memalloc.h" -#include "mystring.h" - - -struct nodesize { - int blocksize; /* size of structures in function */ - int stringsize; /* size of strings in node */ -}; - -struct nodecopystate { - pointer block; /* block to allocate function from */ - char *string; /* block to allocate strings from */ -}; - -%SIZES - - -static void calcsize(union node *, struct nodesize *); -static void sizenodelist(struct nodelist *, struct nodesize *); -static union node *copynode(union node *, struct nodecopystate *); -static struct nodelist *copynodelist(struct nodelist *, struct nodecopystate *); -static char *nodesavestr(const char *, struct nodecopystate *); - - -struct funcdef { - unsigned int refcount; - union node n; -}; - -/* - * Make a copy of a parse tree. - */ - -struct funcdef * -copyfunc(union node *n) -{ - struct nodesize sz; - struct nodecopystate st; - struct funcdef *fn; - - if (n == NULL) - return NULL; - sz.blocksize = offsetof(struct funcdef, n); - sz.stringsize = 0; - calcsize(n, &sz); - fn = ckmalloc(sz.blocksize + sz.stringsize); - fn->refcount = 1; - st.block = (char *)fn + offsetof(struct funcdef, n); - st.string = (char *)fn + sz.blocksize; - copynode(n, &st); - return fn; -} - - -union node * -getfuncnode(struct funcdef *fn) -{ - return fn == NULL ? NULL : &fn->n; -} - - -static void -calcsize(union node *n, struct nodesize *result) -{ - %CALCSIZE -} - - - -static void -sizenodelist(struct nodelist *lp, struct nodesize *result) -{ - while (lp) { - result->blocksize += ALIGN(sizeof(struct nodelist)); - calcsize(lp->n, result); - lp = lp->next; - } -} - - - -static union node * -copynode(union node *n, struct nodecopystate *state) -{ - union node *new; - - %COPY - return new; -} - - -static struct nodelist * -copynodelist(struct nodelist *lp, struct nodecopystate *state) -{ - struct nodelist *start; - struct nodelist **lpp; - - lpp = &start; - while (lp) { - *lpp = state->block; - state->block = (char *)state->block + - ALIGN(sizeof(struct nodelist)); - (*lpp)->n = copynode(lp->n, state); - lp = lp->next; - lpp = &(*lpp)->next; - } - *lpp = NULL; - return start; -} - - - -static char * -nodesavestr(const char *s, struct nodecopystate *state) -{ - const char *p = s; - char *q = state->string; - char *rtn = state->string; - - while ((*q++ = *p++) != '\0') - continue; - state->string = q; - return rtn; -} - - -void -reffunc(struct funcdef *fn) -{ - if (fn) - fn->refcount++; -} - - -/* - * Decrement the reference count of a function definition, freeing it - * if it falls to 0. - */ - -void -unreffunc(struct funcdef *fn) -{ - if (fn) { - fn->refcount--; - if (fn->refcount > 0) - return; - ckfree(fn); - } -} |