[unix-history] / usr / src / lib / librpc / rpcgen / rpc_util.c

/* @(#)rpc_util.c	2.1 88/08/01 4.0 RPCSRC */
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user.
 * 
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 * 
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 * 
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 * 
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 * 
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
#ifndef lint
static char sccsid[] = "@(#)rpc_util.c 1.5 87/06/24 (C) 1987 SMI";
#endif

/*
 * rpc_util.c, Utility routines for the RPC protocol compiler 
 * Copyright (C) 1987, Sun Microsystems, Inc. 
 */
#include <stdio.h>
#include "rpc_scan.h"
#include "rpc_parse.h"
#include "rpc_util.h"

char curline[MAXLINESIZE];	/* current read line */
char *where = curline;	/* current point in line */
int linenum = 0;	/* current line number */

char *infilename;	/* input filename */

#define NFILES 4
char *outfiles[NFILES];	/* output file names */
int nfiles;

FILE *fout;	/* file pointer of current output */
FILE *fin;	/* file pointer of current input */

list *defined;	/* list of defined things */

/*
 * Reinitialize the world 
 */
reinitialize()
{
	bzero(curline, MAXLINESIZE);
	where = curline;
	linenum = 0;
	defined = NULL;
}

/*
 * string equality 
 */
streq(a, b)
	char *a;
	char *b;
{
	return (strcmp(a, b) == 0);
}

/*
 * find a value in a list 
 */
char *
findval(lst, val, cmp)
	list *lst;
	char *val;
	int (*cmp) ();

{
	for (; lst != NULL; lst = lst->next) {
		if ((*cmp) (lst->val, val)) {
			return (lst->val);
		}
	}
	return (NULL);
}

/*
 * store a value in a list 
 */
void
storeval(lstp, val)
	list **lstp;
	char *val;
{
	list **l;
	list *lst;

	for (l = lstp; *l != NULL; l = (list **) & (*l)->next);
	lst = ALLOC(list);
	lst->val = val;
	lst->next = NULL;
	*l = lst;
}


static
findit(def, type)
	definition *def;
	char *type;
{
	return (streq(def->def_name, type));
}


static char *
fixit(type, orig)
	char *type;
	char *orig;
{
	definition *def;

	def = (definition *) FINDVAL(defined, type, findit);
	if (def == NULL || def->def_kind != DEF_TYPEDEF) {
		return (orig);
	}
	switch (def->def.ty.rel) {
	case REL_VECTOR:
		return (def->def.ty.old_type);
	case REL_ALIAS:
		return (fixit(def->def.ty.old_type, orig));
	default:
		return (orig);
	}
}

char *
fixtype(type)
	char *type;
{
	return (fixit(type, type));
}

char *
stringfix(type)
	char *type;
{
	if (streq(type, "string")) {
		return ("wrapstring");
	} else {
		return (type);
	}
}

void
ptype(prefix, type, follow)
	char *prefix;
	char *type;
	int follow;
{
	if (prefix != NULL) {
		if (streq(prefix, "enum")) {
			f_print(fout, "enum ");
		} else {
			f_print(fout, "struct ");
		}
	}
	if (streq(type, "bool")) {
		f_print(fout, "bool_t ");
	} else if (streq(type, "string")) {
		f_print(fout, "char *");
	} else {
		f_print(fout, "%s ", follow ? fixtype(type) : type);
	}
}


static
typedefed(def, type)
	definition *def;
	char *type;
{
	if (def->def_kind != DEF_TYPEDEF || def->def.ty.old_prefix != NULL) {
		return (0);
	} else {
		return (streq(def->def_name, type));
	}
}

isvectordef(type, rel)
	char *type;
	relation rel;
{
	definition *def;

	for (;;) {
		switch (rel) {
		case REL_VECTOR:
			return (!streq(type, "string"));
		case REL_ARRAY:
			return (0);
		case REL_POINTER:
			return (0);
		case REL_ALIAS:
			def = (definition *) FINDVAL(defined, type, typedefed);
			if (def == NULL) {
				return (0);
			}
			type = def->def.ty.old_type;
			rel = def->def.ty.rel;
		}
	}
}


static char *
locase(str)
	char *str;
{
	char c;
	static char buf[100];
	char *p = buf;

	while (c = *str++) {
		*p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
	}
	*p = 0;
	return (buf);
}


void
pvname(pname, vnum)
	char *pname;
	char *vnum;
{
	f_print(fout, "%s_%s", locase(pname), vnum);
}


/*
 * print a useful (?) error message, and then die 
 */
void
error(msg)
	char *msg;
{
	printwhere();
	f_print(stderr, "%s, line %d: ", infilename, linenum);
	f_print(stderr, "%s\n", msg);
	crash();
}

/*
 * Something went wrong, unlink any files that we may have created and then
 * die. 
 */
crash()
{
	int i;

	for (i = 0; i < nfiles; i++) {
		(void) unlink(outfiles[i]);
	}
	exit(1);
}


void
record_open(file)
	char *file;
{
	if (nfiles < NFILES) {
		outfiles[nfiles++] = file;
	} else {
		f_print(stderr, "too many files!\n");
		crash();
	}
}

static char expectbuf[100];
static char *toktostr();

/*
 * error, token encountered was not the expected one 
 */
void
expected1(exp1)
	tok_kind exp1;
{
	s_print(expectbuf, "expected '%s'",
		toktostr(exp1));
	error(expectbuf);
}

/*
 * error, token encountered was not one of two expected ones 
 */
void
expected2(exp1, exp2)
	tok_kind exp1, exp2;
{
	s_print(expectbuf, "expected '%s' or '%s'",
		toktostr(exp1),
		toktostr(exp2));
	error(expectbuf);
}

/*
 * error, token encountered was not one of 3 expected ones 
 */
void
expected3(exp1, exp2, exp3)
	tok_kind exp1, exp2, exp3;
{
	s_print(expectbuf, "expected '%s', '%s' or '%s'",
		toktostr(exp1),
		toktostr(exp2),
		toktostr(exp3));
	error(expectbuf);
}

void
tabify(f, tab)
	FILE *f;
	int tab;
{
	while (tab--) {
		(void) fputc('\t', f);
	}
}


static token tokstrings[] = {
			     {TOK_IDENT, "identifier"},
			     {TOK_CONST, "const"},
			     {TOK_RPAREN, ")"},
			     {TOK_LPAREN, "("},
			     {TOK_RBRACE, "}"},
			     {TOK_LBRACE, "{"},
			     {TOK_LBRACKET, "["},
			     {TOK_RBRACKET, "]"},
			     {TOK_STAR, "*"},
			     {TOK_COMMA, ","},
			     {TOK_EQUAL, "="},
			     {TOK_COLON, ":"},
			     {TOK_SEMICOLON, ";"},
			     {TOK_UNION, "union"},
			     {TOK_STRUCT, "struct"},
			     {TOK_SWITCH, "switch"},
			     {TOK_CASE, "case"},
			     {TOK_DEFAULT, "default"},
			     {TOK_ENUM, "enum"},
			     {TOK_TYPEDEF, "typedef"},
			     {TOK_INT, "int"},
			     {TOK_SHORT, "short"},
			     {TOK_LONG, "long"},
			     {TOK_UNSIGNED, "unsigned"},
			     {TOK_DOUBLE, "double"},
			     {TOK_FLOAT, "float"},
			     {TOK_CHAR, "char"},
			     {TOK_STRING, "string"},
			     {TOK_OPAQUE, "opaque"},
			     {TOK_BOOL, "bool"},
			     {TOK_VOID, "void"},
			     {TOK_PROGRAM, "program"},
			     {TOK_VERSION, "version"},
			     {TOK_EOF, "??????"}
};

static char *
toktostr(kind)
	tok_kind kind;
{
	token *sp;

	for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++);
	return (sp->str);
}


static
printbuf()
{
	char c;
	int i;
	int cnt;

#	define TABSIZE 4

	for (i = 0; c = curline[i]; i++) {
		if (c == '\t') {
			cnt = 8 - (i % TABSIZE);
			c = ' ';
		} else {
			cnt = 1;
		}
		while (cnt--) {
			(void) fputc(c, stderr);
		}
	}
}


static
printwhere()
{
	int i;
	char c;
	int cnt;

	printbuf();
	for (i = 0; i < where - curline; i++) {
		c = curline[i];
		if (c == '\t') {
			cnt = 8 - (i % TABSIZE);
		} else {
			cnt = 1;
		}
		while (cnt--) {
			(void) fputc('^', stderr);
		}
	}
	(void) fputc('\n', stderr);
}
Commit	Line	Data
ad787160 C	1	/* @(#)rpc_util.c 2.1 88/08/01 4.0 RPCSRC */
	2	/*
	3	* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
	4	* unrestricted use provided that this legend is included on all tape
	5	* media and as a part of the software program in whole or part. Users
	6	* may copy or modify Sun RPC without charge, but are not authorized
	7	* to license or distribute it to anyone else except as part of a product or
	8	* program developed by the user.
	9	*
	10	* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
	11	* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
	12	* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
	13	*
	14	* Sun RPC is provided with no support and without any obligation on the
	15	* part of Sun Microsystems, Inc. to assist in its use, correction,
	16	* modification or enhancement.
	17	*
	18	* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
	19	* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
	20	* OR ANY PART THEREOF.
	21	*
	22	* In no event will Sun Microsystems, Inc. be liable for any lost revenue
	23	* or profits or other special, indirect and consequential damages, even if
	24	* Sun has been advised of the possibility of such damages.
	25	*
	26	* Sun Microsystems, Inc.
	27	* 2550 Garcia Avenue
	28	* Mountain View, California 94043
	29	*/
	30	#ifndef lint
	31	static char sccsid[] = "@(#)rpc_util.c 1.5 87/06/24 (C) 1987 SMI";
	32	#endif
	33
	34	/*
	35	* rpc_util.c, Utility routines for the RPC protocol compiler
	36	* Copyright (C) 1987, Sun Microsystems, Inc.
	37	*/
	38	#include <stdio.h>
	39	#include "rpc_scan.h"
	40	#include "rpc_parse.h"
	41	#include "rpc_util.h"
	42
	43	char curline[MAXLINESIZE]; /* current read line */
	44	char where = curline; / current point in line */
	45	int linenum = 0; /* current line number */
	46
	47	char infilename; / input filename */
	48
	49	#define NFILES 4
	50	char outfiles[NFILES]; / output file names */
	51	int nfiles;
	52
	53	FILE fout; / file pointer of current output */
	54	FILE fin; / file pointer of current input */
	55
	56	list defined; / list of defined things */
	57
	58	/*
	59	* Reinitialize the world
	60	*/
	61	reinitialize()
	62	{
	63	bzero(curline, MAXLINESIZE);
	64	where = curline;
65	linenum = 0;
66	defined = NULL;
67	}
68
69	/*
70	* string equality
71	*/
72	streq(a, b)
73	char *a;
74	char *b;
75	{
76	return (strcmp(a, b) == 0);
77	}
78
79	/*
80	* find a value in a list
81	*/
82	char *
83	findval(lst, val, cmp)
84	list *lst;
85	char *val;
86	int (*cmp) ();
87
88	{
89	for (; lst != NULL; lst = lst->next) {
90	if ((*cmp) (lst->val, val)) {
91	return (lst->val);
92	}
93	}
94	return (NULL);
95	}
96
97	/*
98	* store a value in a list
99	*/
100	void
101	storeval(lstp, val)
102	list **lstp;
103	char *val;
104	{
105	list **l;
106	list *lst;
107
108	for (l = lstp; l != NULL; l = (list ) & (l)->next);
109	lst = ALLOC(list);
110	lst->val = val;
111	lst->next = NULL;
112	*l = lst;
113	}
114
115
116	static
117	findit(def, type)
118	definition *def;
119	char *type;
120	{
121	return (streq(def->def_name, type));
122	}
123
124
125	static char *
126	fixit(type, orig)
127	char *type;
128	char *orig;
129	{
130	definition *def;
131
132	def = (definition *) FINDVAL(defined, type, findit);
133	if (def == NULL \|\| def->def_kind != DEF_TYPEDEF) {
134	return (orig);
135	}
136	switch (def->def.ty.rel) {
137	case REL_VECTOR:
138	return (def->def.ty.old_type);
139	case REL_ALIAS:
140	return (fixit(def->def.ty.old_type, orig));
141	default:
142	return (orig);
143	}
144	}
145
146	char *
147	fixtype(type)
148	char *type;
149	{
150	return (fixit(type, type));
151	}
152
153	char *
154	stringfix(type)
155	char *type;
156	{
157	if (streq(type, "string")) {
158	return ("wrapstring");
159	} else {
160	return (type);
161	}
162	}
163
164	void
165	ptype(prefix, type, follow)
166	char *prefix;
167	char *type;
168	int follow;
169	{
170	if (prefix != NULL) {
171	if (streq(prefix, "enum")) {
172	f_print(fout, "enum ");
173	} else {
174	f_print(fout, "struct ");
175	}
176	}
177	if (streq(type, "bool")) {
178	f_print(fout, "bool_t ");
179	} else if (streq(type, "string")) {
180	f_print(fout, "char *");
181	} else {
182	f_print(fout, "%s ", follow ? fixtype(type) : type);
183	}
184	}
185
186
187	static
188	typedefed(def, type)
189	definition *def;
190	char *type;
191	{
192	if (def->def_kind != DEF_TYPEDEF \|\| def->def.ty.old_prefix != NULL) {
193	return (0);
194	} else {
195	return (streq(def->def_name, type));
196	}
197	}
198
199	isvectordef(type, rel)
200	char *type;
201	relation rel;
202	{
203	definition *def;
204
205	for (;;) {
206	switch (rel) {
207	case REL_VECTOR:
208	return (!streq(type, "string"));
209	case REL_ARRAY:
210	return (0);
211	case REL_POINTER:
212	return (0);
213	case REL_ALIAS:
214	def = (definition *) FINDVAL(defined, type, typedefed);
215	if (def == NULL) {
216	return (0);
217	}
218	type = def->def.ty.old_type;
219	rel = def->def.ty.rel;
220	}
221	}
222	}
223
224
225	static char *
226	locase(str)
227	char *str;
228	{
229	char c;
230	static char buf[100];
231	char *p = buf;
232
233	while (c = *str++) {
234	*p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
235	}
236	*p = 0;
237	return (buf);
238	}
239
240
241	void
242	pvname(pname, vnum)
243	char *pname;
244	char *vnum;
245	{
246	f_print(fout, "%s_%s", locase(pname), vnum);
247	}
248
249
250	/*
251	* print a useful (?) error message, and then die
252	*/
253	void
254	error(msg)
255	char *msg;
256	{
257	printwhere();
258	f_print(stderr, "%s, line %d: ", infilename, linenum);
259	f_print(stderr, "%s\n", msg);
260	crash();
261	}
262
263	/*
264	* Something went wrong, unlink any files that we may have created and then
265	* die.
266	*/
267	crash()
268	{
269	int i;
270
271	for (i = 0; i < nfiles; i++) {
272	(void) unlink(outfiles[i]);
273	}
274	exit(1);
275	}
276
277
278	void
279	record_open(file)
280	char *file;
281	{
282	if (nfiles < NFILES) {
283	outfiles[nfiles++] = file;
284	} else {
285	f_print(stderr, "too many files!\n");
286	crash();
287	}
288	}
289
290	static char expectbuf[100];
291	static char *toktostr();
292
293	/*
294	* error, token encountered was not the expected one
295	*/
296	void
297	expected1(exp1)
298	tok_kind exp1;
299	{
300	s_print(expectbuf, "expected '%s'",
301	toktostr(exp1));
302	error(expectbuf);
303	}
304
305	/*
306	* error, token encountered was not one of two expected ones
307	*/
308	void
309	expected2(exp1, exp2)
310	tok_kind exp1, exp2;
311	{
312	s_print(expectbuf, "expected '%s' or '%s'",
313	toktostr(exp1),
314	toktostr(exp2));
315	error(expectbuf);
316	}
317
318	/*
319	* error, token encountered was not one of 3 expected ones
320	*/
321	void
322	expected3(exp1, exp2, exp3)
323	tok_kind exp1, exp2, exp3;
324	{
325	s_print(expectbuf, "expected '%s', '%s' or '%s'",
326	toktostr(exp1),
327	toktostr(exp2),
328	toktostr(exp3));
329	error(expectbuf);
330	}
331
332	void
333	tabify(f, tab)
334	FILE *f;
335	int tab;
336	{
337	while (tab--) {
338	(void) fputc('\t', f);
339	}
340	}
341
342
343
344	static token tokstrings[] = {
345	{TOK_IDENT, "identifier"},
346	{TOK_CONST, "const"},
347	{TOK_RPAREN, ")"},
348	{TOK_LPAREN, "("},
349	{TOK_RBRACE, "}"},
350	{TOK_LBRACE, "{"},
351	{TOK_LBRACKET, "["},
352	{TOK_RBRACKET, "]"},
353	{TOK_STAR, "*"},
354	{TOK_COMMA, ","},
355	{TOK_EQUAL, "="},
356	{TOK_COLON, ":"},
357	{TOK_SEMICOLON, ";"},
358	{TOK_UNION, "union"},
359	{TOK_STRUCT, "struct"},
360	{TOK_SWITCH, "switch"},
361	{TOK_CASE, "case"},
362	{TOK_DEFAULT, "default"},
363	{TOK_ENUM, "enum"},
364	{TOK_TYPEDEF, "typedef"},
365	{TOK_INT, "int"},
366	{TOK_SHORT, "short"},
367	{TOK_LONG, "long"},
368	{TOK_UNSIGNED, "unsigned"},
369	{TOK_DOUBLE, "double"},
370	{TOK_FLOAT, "float"},
371	{TOK_CHAR, "char"},
372	{TOK_STRING, "string"},
373	{TOK_OPAQUE, "opaque"},
374	{TOK_BOOL, "bool"},
375	{TOK_VOID, "void"},
376	{TOK_PROGRAM, "program"},
377	{TOK_VERSION, "version"},
378	{TOK_EOF, "??????"}
379	};
380
381	static char *
382	toktostr(kind)
383	tok_kind kind;
384	{
385	token *sp;
386
387	for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++);
388	return (sp->str);
389	}
390
391
392
393	static
394	printbuf()
395	{
396	char c;
397	int i;
398	int cnt;
399
400	# define TABSIZE 4
401
402	for (i = 0; c = curline[i]; i++) {
403	if (c == '\t') {
404	cnt = 8 - (i % TABSIZE);
405	c = ' ';
406	} else {
407	cnt = 1;
408	}
409	while (cnt--) {
410	(void) fputc(c, stderr);
411	}
412	}
413	}
414
415
416	static
417	printwhere()
418	{
419	int i;
420	char c;
421	int cnt;
422
423	printbuf();
424	for (i = 0; i < where - curline; i++) {
425	c = curline[i];
426	if (c == '\t') {
427	cnt = 8 - (i % TABSIZE);
428	} else {
429	cnt = 1;
430	}
431	while (cnt--) {
432	(void) fputc('^', stderr);
433	}
434	}
435	(void) fputc('\n', stderr);
436	}