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- /*-
- * Copyright (c) 1980 The Regents of the University of California.
- * All rights reserved.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)func.c 5.2 (Berkeley) 4/16/91";
- #endif /* not lint */
-
- #include "whoami.h"
- #ifdef OBJ
- /*
- * the rest of the file
- */
- #include "0.h"
- #include "tree.h"
- #include "opcode.h"
- #include "tree_ty.h"
-
- /*
- * Funccod generates code for
- * built in function calls and calls
- * call to generate calls to user
- * defined functions and procedures.
- */
- struct nl
- *funccod(r)
- struct tnode *r;
- {
- struct nl *p;
- register struct nl *p1;
- struct nl *tempnlp;
- register struct tnode *al;
- register op;
- int argc;
- struct tnode *argv, tr, tr2;
-
- /*
- * Verify that the given name
- * is defined and the name of
- * a function.
- */
- p = lookup(r->pcall_node.proc_id);
- if (p == NLNIL) {
- rvlist(r->pcall_node.arg);
- return (NLNIL);
- }
- if (p->class != FUNC && p->class != FFUNC) {
- error("%s is not a function", p->symbol);
- rvlist(r->pcall_node.arg);
- return (NLNIL);
- }
- argv = r->pcall_node.arg;
- /*
- * Call handles user defined
- * procedures and functions
- */
- if (bn != 0)
- return (call(p, argv, FUNC, bn));
- /*
- * Count the arguments
- */
- argc = 0;
- for (al = argv; al != TR_NIL; al = al->list_node.next)
- argc++;
- /*
- * Built-in functions have
- * their interpreter opcode
- * associated with them.
- */
- op = p->value[0] &~ NSTAND;
- if (opt('s') && (p->value[0] & NSTAND)) {
- standard();
- error("%s is a nonstandard function", p->symbol);
- }
- switch (op) {
- /*
- * Parameterless functions
- */
- case O_CLCK:
- case O_SCLCK:
- case O_WCLCK:
- case O_ARGC:
- if (argc != 0) {
- error("%s takes no arguments", p->symbol);
- rvlist(argv);
- return (NLNIL);
- }
- (void) put(1, op);
- return (nl+T4INT);
- case O_EOF:
- case O_EOLN:
- if (argc == 0) {
- argv = (&tr);
- tr.list_node.list = (&tr2);
- tr2.tag = T_VAR;
- tr2.var_node.cptr = input->symbol;
- tr2.var_node.line_no = NIL;
- tr2.var_node.qual = TR_NIL;
- argc = 1;
- } else if (argc != 1) {
- error("%s takes either zero or one argument", p->symbol);
- rvlist(argv);
- return (NLNIL);
- }
- }
- /*
- * All other functions take
- * exactly one argument.
- */
- if (argc != 1) {
- error("%s takes exactly one argument", p->symbol);
- rvlist(argv);
- return (NLNIL);
- }
- /*
- * Evaluate the argmument
- */
- if (op == O_EOF || op == O_EOLN)
- p1 = stklval(argv->list_node.list, NIL );
- else
- p1 = stkrval(argv->list_node.list, NLNIL , (long) RREQ );
- if (p1 == NLNIL)
- return (NLNIL);
- switch (op) {
- case 0:
- error("%s is an unimplemented 6000-3.4 extension", p->symbol);
- default:
- panic("func1");
- case O_EXP:
- case O_SIN:
- case O_COS:
- case O_ATAN:
- case O_LN:
- case O_SQRT:
- case O_RANDOM:
- case O_EXPO:
- case O_UNDEF:
- if (isa(p1, "i"))
- convert( nl+T4INT , nl+TDOUBLE);
- else if (isnta(p1, "d")) {
- error("%s's argument must be integer or real, not %s", p->symbol, nameof(p1));
- return (NLNIL);
- }
- (void) put(1, op);
- if (op == O_UNDEF)
- return (nl+TBOOL);
- else if (op == O_EXPO)
- return (nl+T4INT);
- else
- return (nl+TDOUBLE);
- case O_SEED:
- if (isnta(p1, "i")) {
- error("seed's argument must be an integer, not %s", nameof(p1));
- return (NLNIL);
- }
- (void) put(1, op);
- return (nl+T4INT);
- case O_ROUND:
- case O_TRUNC:
- if (isnta(p1, "d")) {
- error("%s's argument must be a real, not %s", p->symbol, nameof(p1));
- return (NLNIL);
- }
- (void) put(1, op);
- return (nl+T4INT);
- case O_ABS2:
- case O_SQR2:
- if (isa(p1, "d")) {
- (void) put(1, op + O_ABS8-O_ABS2);
- return (nl+TDOUBLE);
- }
- if (isa(p1, "i")) {
- (void) put(1, op + (width(p1) >> 2));
- return (nl+T4INT);
- }
- error("%s's argument must be an integer or real, not %s", p->symbol, nameof(p1));
- return (NLNIL);
- case O_ORD2:
- if (isa(p1, "bcis")) {
- return (nl+T4INT);
- }
- if (classify(p1) == TPTR) {
- if (!opt('s')) {
- return (nl+T4INT);
- }
- standard();
- }
- error("ord's argument must be of scalar type, not %s",
- nameof(p1));
- return (NLNIL);
- case O_SUCC2:
- case O_PRED2:
- if (isa(p1, "d")) {
- error("%s is forbidden for reals", p->symbol);
- return (NLNIL);
- }
- if ( isnta( p1 , "bcsi" ) ) {
- error("%s's argument must be of scalar type, not %s", p->symbol, nameof(p1));
- return NIL;
- }
- tempnlp = p1 -> class == TYPE ? p1 -> type : p1;
- if (isa(p1, "i")) {
- if (width(p1) <= 2) {
- op += O_PRED24 - O_PRED2;
- (void) put(3, op, (int)tempnlp->range[0],
- (int)tempnlp->range[1]);
- } else {
- op++;
- (void) put(3, op, tempnlp->range[0],
- tempnlp->range[1]);
- }
- return nl + T4INT;
- } else {
- (void) put(3, op, (int)tempnlp->range[0],
- (int)tempnlp->range[1]);
- return p1;
- }
- case O_ODD2:
- if (isnta(p1, "i")) {
- error("odd's argument must be an integer, not %s", nameof(p1));
- return (NLNIL);
- }
- (void) put(1, op + (width(p1) >> 2));
- return (nl+TBOOL);
- case O_CHR2:
- if (isnta(p1, "i")) {
- error("chr's argument must be an integer, not %s", nameof(p1));
- return (NLNIL);
- }
- (void) put(1, op + (width(p1) >> 2));
- return (nl+TCHAR);
- case O_CARD:
- if (isnta(p1, "t")) {
- error("Argument to card must be a set, not %s", nameof(p1));
- return (NLNIL);
- }
- (void) put(2, O_CARD, width(p1));
- return (nl+T2INT);
- case O_EOLN:
- if (!text(p1)) {
- error("Argument to eoln must be a text file, not %s", nameof(p1));
- return (NLNIL);
- }
- (void) put(1, op);
- return (nl+TBOOL);
- case O_EOF:
- if (p1->class != FILET) {
- error("Argument to eof must be file, not %s", nameof(p1));
- return (NLNIL);
- }
- (void) put(1, op);
- return (nl+TBOOL);
- }
- }
- #endif OBJ
-