Context Navigation

libparse.l @ a70441f

spielwiese

Last change on this file since a70441f was a70441f, checked in by Olaf Bachmann <obachman@…>, 24 years ago
Windows and gcc 2.95 porting git-svn-id: file:///usr/local/Singular/svn/trunk@4273 2c84dea3-7e68-4137-9b89-c4e89433aadc
Property mode set to `100644`
File size: 29.6 KB

Line
1	%{
2	/****************************************
3	* Computer Algebra System SINGULAR *
4	****************************************/
5	/* $Id: libparse.l,v 1.39 2000-04-27 10:07:08 obachman Exp $ */
6	#include <stdio.h>
7	#include <string.h>
8	#include <stdlib.h>
9	#include <ctype.h>
10	#ifdef STANDALONE_PARSER
11	#include "utils.h"
12	#define HAVE_LIBPARSER
13	#define YYLPDEBUG 1
14	#else
15	#include "mod2.h"
16	#include "subexpr.h"
17	#include "grammar.h"
18	#include "ipshell.h"
19	#include "ipid.h"
20	#include "tok.h"
21	#include "febase.h"
22	#include "mmemory.h"
23	#endif
24	#include "libparse.h"
25
26	#ifdef HAVE_LIBPARSER
27	#define YY_SKIP_YYWRAP
28
29	typedef enum { LP_NONE, LP_INFO, LP_VERSION} lib_cmds;
30
31	int libread(FILE* f, char* buf, int max_size);
32	int current_pos(int i);
33	void print_version(lp_modes mode, char *p);
34	#ifdef HAVE_NAMESPACES
35	void copy_string(lp_modes mode, idhdl pl);
36	extern void piCleanUp(procinfov pi);
37	#else /* HAVE_NAMESPACES */
38	void copy_string(lp_modes mode);
39	#endif /* HAVE_NAMESPACES */
40	void make_version(char *p, int what);
41
42	int brace1 = 0; /* { } */
43	int brace2 = 0; /* ( ) */
44	int brace3 = 0; /* [ ] */
45	int quote = 0; /* " */
46	int offset = 0;
47	BOOLEAN p_static = FALSE;
48	int old_state = 0;
49	lib_cmds last_cmd = LP_NONE;
50
51	char libnamebuf[128];
52	char *text_buffer=NULL;
53	long string_start;
54
55	char *yylp_buffer_start;
56	int yylplineno = 1;
57	int lpverbose = 0, check = 0;
58	int texinfo_out = 0;
59	int found_info=0,
60	found_version=0,
61	found_oldhelp = 0,
62	found_proc_in_proc = 0;
63
64	char *yylp_errlist[]= {
65	"",
66	"missing close bracket ')' for proc definition in line %d.", /* 1 */
67	"missing close bracket ')' for procbody in line %d.", /* 2 */
68	"missing close bracket ']' for procbody in line %d.", /* 3 */
69	"too many ')' closed brackets in line %d.", /* 4 */
70	"too many ']' closed brackets in line %d.", /* 5 */
71	"missing close bracket ')' for example in line %d.", /* 6 */
72	"missing close bracket ']' for example in line %d.", /* 7 */
73	"cannot assign character '%c' in line %d to any group.", /* 8 */
74	"there must be a quote missing somewhere before line %d.", /* 9 */
75	"missing close bracket '}' at end of library in line %d.", /* 10 */
76	"missing close bracket ')' at end of library in line %d.", /* 11 */
77	"missing close bracket ']' at end of library in line %d.", /* 12 */
78	NULL
79	};
80	int yylp_errno = 0;
81
82	#ifdef __MWERKS__
83	#ifdef __cplusplus
84	extern "C" {
85	#endif
86	long ftell(FILE *fp);
87	#ifdef macintosh
88	int fileno(FILE *stream);
89	FILE fdopen(int filedes, char type);
90	int isatty(int filedes);
91	#else
92	int _fileno(FILE *stream);
93	FILE _fdopen(int filedes, char type);
94	int _isatty(int filedes);
95	#define fileno _fileno
96	#define fdopen _fdopen
97	#define isatty _isatty
98	#endif /* macintosh */
99	#ifdef __cplusplus
100	}
101	#endif
102	#endif
103
104	#ifdef STANDALONE_PARSER
105	procinfov pi;
106	void printpi(procinfov pi);
107	void pi_clear(procinfov pi);
108	extern "C" {
109	int yylpwrap();
110	}
111	void main_init(int argc, char *argv[]);
112	void main_result(char *libname);
113	#else /* STANDALONE_PARSER */
114	idhdl h0;
115	#ifdef HAVE_NAMESPACES
116	idhdl h_top;
117	extern namehdl namespaceroot;
118	#endif /* HAVE_NAMESPACES */
119	#define pi IDPROC(h0)
120	extern "C"
121	{
122	int yylpwrap();
123	}
124	extern libstackv library_stack;
125	#endif /* STANDALONE_PARSER */
126
127	static unsigned long help_chksum;
128
129	#define SET_DEF_END(mode, pi, p) \
130	if ( mode == LOAD_LIB) pi->data.s.def_end = p;
131	#define SET_HELP_START(mode, pi, p) \
132	if ( mode == LOAD_LIB) {pi->data.s.help_start = p; help_chksum = 0;}
133	#define SET_HELP_END(mode, pi, p) \
134	if ( mode == LOAD_LIB) {pi->data.s.help_end = p; \
135	pi->data.s.help_chksum = help_chksum;}
136
137	#define SET_BODY_START(mode, pi, l, p) \
138	if ( mode == LOAD_LIB) \
139	{ \
140	pi->data.s.body_lineno = l; \
141	pi->data.s.body_start = p; \
142	}
143	#define SET_BODY_END(mode, pi, p) \
144	if ( mode == LOAD_LIB) \
145	{ \
146	pi->data.s.body_end = p-1; \
147	pi->data.s.proc_end = p-1; \
148	}
149
150	#define SET_EXAMPLE_START(mode, pi, l, p) \
151	if ( mode == LOAD_LIB) \
152	{ \
153	pi->data.s.example_lineno = l; \
154	pi->data.s.example_start = p; \
155	}
156	#define SET_PROC_END(mode, pi, p) \
157	if ( mode == LOAD_LIB) \
158	{ \
159	pi->data.s.proc_end = p-1; \
160	if(pi->data.s.body_end==0) \
161	pi->data.s.body_end = p-1; \
162	}
163
164	#define ROTATE_RIGHT(c) if ((c) & 01) (c) = ((c) >>1) + 0x8000; else (c) >>= 1;
165	#define IncrCheckSum(c) \
166	do \
167	{ \
168	ROTATE_RIGHT(help_chksum); \
169	help_chksum += c; \
170	help_chksum &= 0xffff; \
171	} \
172	while(0)
173
174	#undef YY_DECL
175	#ifdef HAVE_NAMESPACES
176	#define YY_DECL int yylex(char newlib, char libfile, \
177	lib_style_types *lib_style, \
178	idhdl pl, BOOLEAN autoexport, lp_modes mode)
179	#else /* HAVE_NAMESPACES */
180	#define YY_DECL int yylex(char newlib, char libfile, \
181	lib_style_types *lib_style, \
182	lp_modes mode)
183	#endif /* HAVE_NAMESPACES */
184
185	#undef YY_INPUT
186	#define YY_INPUT(buf,result,max_size) \
187	if ( ((result = libread( (yyin), (char *) buf, max_size )) < 0 ) \
188	&& ferror( yyin ) ) \
189	YY_FATAL_ERROR( "read in flex scanner failed" );
190
191	#define YY_USER_INIT { \
192	BEGIN(header); \
193	yylplineno = 1; \
194	yylp_errno = 0; \
195	*lib_style = OLD_LIBSTYLE; \
196	strcpy(libnamebuf,"(unknown version)"); \
197	}
198
199	#if 0
200	<pbody>proc[ \t]+{name} {
201	printf("MISSING: PROC-cmd found. ERROR!\n"); }
202	<pbody>example[ \t]*\n {
203	yylplineno++;
204	printf("MISSING: EXAMPLE-cmd found. ERROR!\n"); }
205	info=+"\"" {
206	#endif
207
208	%}
209
210	digit [0-9]
211	letter [@a-zA-Z\']
212	name ({letter}({letter}{digit}_)\|_)
213	varname ({letter}({letter}{digit}_)\|_\|#)
214	letters ({letter}\|{digit}\|[_./#%^*:,])
215	string ({letters}*)
216	comment [\/][\/]
217	dolar [$]
218	nls [\n\r]
219	symbols [~!@#$%^&*()_+-=\\\\|\[\];:,<.>/\?\' \t\~\`]
220	asymbols ({symbols}\|[{}])
221	bsymbols ({symbols}\|{escbrack}\|[}])
222	aletters ({letter}\|{digit}\|{asymbols}\|{dolar}\|{escquote}\|{nls})
223	bletters ({letter}\|{digit}\|{bsymbols}\|{dolar}\|{quote}\|{nls})
224	cletters ({letter}\|{digit}\|{asymbols}\|{dolar}\|{quote})
225	strings ({aletters}*)
226	escstrings ({bletters}*)
227	fstring ({cletters}*)
228	param ({name}+{tos}+{varname})
229	parameters ({param}(,{param})*)
230	paramlist ("("{parameters}")")
231	quote [\"]
232	escquote (\\\")
233	escbrack (\\\{)
234	tnl ([ \t\n]*)
235	eos ({quote}+{tnl}+"{")
236	tos ([ \t]*)
237	eq ([ \t]+=[ \t])
238	eqnl ([ \t\n]+=[ \t\n])
239
240	/* %start START */
241
242	%x header
243	%x help
244	%x libcmd
245	%x pdef
246	%x phead
247	%x poldhelp
248	%x phelp
249	%x pbody
250	%x pstr
251	%x pexample
252	%x pestr
253	%x string
254	%x comment
255	%x info
256	%x version
257
258	%%
259	(\/\/[^\n])\|(^#![^\n])\|([ \t]) { }
260	\/\/* { old_state = YYSTATE; BEGIN(comment); }
261
262	(info+{eqnl}+{quote}+{strings}+{quote}) {
263	yyless(4); old_state = YYSTATE; BEGIN(info);
264	}
265
266	(version+{eqnl}+{quote}+{strings}+{quote}) {
267	found_version++;
268	if ( mode != GET_INFO )
269	{
270	make_version(yytext,1);
271	#ifdef STANDALONE_PARSER
272	if (texinfo_out)
273	{
274	char *c = libnamebuf;
275	printf("$version = \"");
276	while (*c != '\0')
277	{
278	if (c == '$' \|\| c == '@') putchar('\\');
279	if (c != '\r') putchar(c);
280	if (*c == '\\')
281	{
282	c++;
283	if (*c != '"') putchar('\\');
284	}
285	else
286	c++;
287	}
288	printf("\";\n");
289	}
290	else
291	printf("Version:%s;\n", libnamebuf);
292	#else
293	#ifdef HAVE_NAMESPACES
294	h0 = enterid( mstrdup("version"), myynest, STRING_CMD,
295	&IDPACKAGE(pl)->idroot, FALSE );
296	if (h0!=NULL)
297	{
298	IDSTRING(h0) = mstrdup(libnamebuf);
299	}
300	#else /* HAVE_NAMESPACES */
301	if (text_buffer!=NULL) FreeL((ADDRESS)text_buffer);
302	text_buffer = mstrdup(libnamebuf);
303	#endif /* HAVE_NAMESPACES */
304	#endif
305	}
306	}
307
308	static { p_static=TRUE; }
309
310	(proc[ \t]+{name})\|([ \t]proc[ \t]+{name}) {
311	char proc[256];
312	BEGIN(pdef);
313	found_proc_in_proc = 0;
314	proc[0]='\0';
315	sscanf( yytext, "%*[^p]proc %s", proc);
316	if(strlen(proc)<1) sscanf( yytext, "proc %s", proc);
317	#if YYLPDEBUG > 1
318	printf("Newlib:%s\n", newlib);
319	#endif
320	#ifdef STANDALONE_PARSER
321	if ( pi != NULL )
322	{
323	printpi(pi);
324	pi_clear(pi);
325	}
326	pi = (procinfo *)malloc(sizeof(procinfo));
327	iiInitSingularProcinfo(pi, newlib, proc, yylplineno,
328	current_pos(0), p_static);
329	#else STANDALONE_PARSER
330	if( mode == LOAD_LIB)
331	{
332	#ifdef HAVE_NAMESPACES
333	h0 = enterid( mstrdup(proc), 0 /myynest/, PROC_CMD,
334	&IDPACKAGE(pl)->idroot, TRUE);
335	if(!p_static && autoexport)
336	{
337	namespaceroot->push( NSPACK(namespaceroot->root) ,"");
338	h_top = enterid( mstrdup(proc), myynest, PROC_CMD,
339	&NSROOT(namespaceroot->root), FALSE );
340	namespaceroot->pop();
341	}
342	#else /* HAVE_NAMESPACES */
343	h0 = enterid( mstrdup(proc), 0 /myynest/, PROC_CMD,
344	&idroot, TRUE );
345	#endif /* HAVE_NAMESPACES */
346	if (h0!=NULL)
347	{
348	iiInitSingularProcinfo(IDPROC(h0), newlib, proc,
349	yylplineno, current_pos(0),p_static);
350	#ifdef HAVE_NAMESPACES
351	if (!p_static && h_top != NULL && autoexport)
352	{
353	if(IDPROC(h_top)!=NULL) piCleanUp((procinfo *)IDPROC(h_top));
354	IDPROC(h_top)=IDPROC(h0);
355	IDPROC(h_top)->ref++;
356	}
357	#endif /* HAVE_NAMESPACES */
358	if (BVERBOSE(V_LOAD_PROC))
359	Warn( " proc '%s' registered", proc );
360	}
361	#endif STANDALONE_PARSER
362	SET_DEF_END(mode, pi, current_pos(yyleng+1));
363	#if YYLPDEBUG
364	if(lpverbose)
365	{
366	printf("// PROCEDURE '%s' status: %s, ", proc,
367	p_static ? "local" : "global");
368	printf("starting at line %d,%d: definition end: %d (%d).\n",
369	yylplineno, current_pos(0), (int)pi->data.s.def_end, brace1);
370	}
371	#endif
372	p_static=FALSE;
373	#ifndef STANDALONE_PARSER
374	}
375	#endif STANDALONE_PARSER
376	}
377	example {
378	BEGIN(pexample);
379	SET_EXAMPLE_START(mode, pi, yylplineno, current_pos(0));
380	#if YYLPDEBUG
381	if(lpverbose)
382	{
383	printf("// EXAMPLE at line %d,%d (%d)\n", yylplineno,
384	current_pos(0), brace1);
385	}
386	#endif
387	}
388
389	LIB[ \t]+"\"" { quote++;
390	BEGIN(libcmd);
391	}
392
393	<header>({comment}+{tos}+{dolar}+Id:+{string}+[^\n])\|({comment}+{tos}+{dolar}+Header:+{string}+[^\n]) {
394	make_version(yytext, 0);
395	#if YYLPDEBUG > 1
396	printf("+(id)HEAD:%s\n", yytext);
397	#endif
398	}
399	<header>(^{comment}+[^\n]*) {
400	#if YYLPDEBUG
401	printf("+(cmt)HEAD:%s\n", yytext);
402	#endif
403	}
404	<header>(^#![^\n]*) {
405	#if YYLPDEBUG > 1
406	printf("-HEAD:%s\n", yytext);
407	#endif
408	}
409	<header>^proc\ { yyless(0);
410	BEGIN(INITIAL);
411	yymore();
412	}
413	<header>(info+{eqnl}+{quote})\|(version+{eqnl}+{quote}) {
414	yyless(0);
415	*lib_style = NEW_LIBSTYLE;
416	BEGIN(INITIAL);
417	yymore();
418	}
419
420	<header>^LIB[ \t]+"\"" { quote++;
421	BEGIN(libcmd);
422	}
423	<header>\n { yylplineno++; }
424	<header>. {
425	#if YYLPDEBUG > 1
426	printf(" HEAD:%s\n", yytext);
427	#endif
428	yyless(0);
429	BEGIN(help);
430	}
431	<help>(^{comment}+[^\n]*) {
432	#if YYLPDEBUG > 1
433	printf(" HELP:%s\n", yytext);
434	#endif
435	BEGIN(INITIAL); }
436	<help>(^#![^\n]*) {
437	#if YYLPDEBUG > 1
438	printf(" HELP:%s\n", yytext);
439	#endif
440	BEGIN(INITIAL);
441	}
442	<help>(info+{eqnl}+{quote})\|(version+{eqnl}+{quote}) {
443	yyless(0);
444	*lib_style = NEW_LIBSTYLE;
445	BEGIN(INITIAL);
446	yymore();
447	}
448	<help>^proc\ {
449	yyless(0);
450	//printf("2) proc found.\n");
451	BEGIN(INITIAL);
452	yymore();
453	}
454	<help>^LIB[ \t]+"\"" { quote++;
455	BEGIN(libcmd);
456	}
457
458	<help>\n { yylplineno++; }
459	<help>({tos}\|{comment}+{fstring}) {
460	#if YYLPDEBUG
461	if(lpverbose>2) printf("--->%s<---\n", yytext);
462	#endif
463	}
464	<help>. {
465	found_oldhelp=1;
466	#if YYLPDEBUG > 1
467	printf("-HELP:%s\n", yytext);
468	#endif
469	}
470
471
472	<libcmd>{string}"\"" { quote--;
473	yytext[yyleng-1] = '\0';
474	#ifndef STANDALONE_PARSER
475	if ( mode == LOAD_LIB )
476	{
477	library_stack->push(newlib, yytext);
478	}
479	#endif /* STANDALONE_PARSER */
480	#if YYLPDEBUG
481	if(lpverbose>1) printf("LIB:'%s'\n", yytext);
482	#endif
483	BEGIN(INITIAL);
484	}
485
486	<pdef>[ \t] { }
487	<pdef>\( {
488	brace2++;
489	#if YYLPDEBUG > 1
490	printf("%s", yytext);
491	#endif
492	}
493	<pdef>\) {
494	brace2--;
495	#if YYLPDEBUG > 1
496	printf(">%s<\n", yytext);
497	printf("{=%d, (=%d, [=%d\n", brace1, brace2, brace3);
498	#endif
499	if(brace2<=0)
500	{
501	#if YYLPDEBUG > 1
502	printf("BEGIN(phead){=%d, (=%d, [=%d\n", brace1, brace2, brace3);
503	#endif
504	SET_DEF_END(mode, pi, current_pos(yyleng));
505	BEGIN(phead);
506	}
507	}
508	<pdef>"{" {
509	if(brace2>0)
510	{
511	#if YYLPDEBUG > 1
512	printf("{=%d, (=%d, [=%d\n", brace1, brace2, brace3);
513	#endif
514	yylp_errno = YYLP_DEF_BR2;
515	return(1);
516	}
517	else
518	{
519	brace1++; BEGIN(pbody);
520	if(lpverbose)
521	printf("// BODY at line %d,%d (%d)\n", yylplineno,
522	current_pos(0), brace1);
523	SET_BODY_START(mode, pi, yylplineno, current_pos(0));
524	}
525	}
526	<pdef>\n { yylplineno++;
527	if(brace2<=0)
528	{
529	#if YYLPDEBUG > 1
530	printf("BEGIN(phead-2){=%d, (=%d, [=%d\n", brace1, brace2, brace3);
531	#endif
532	BEGIN(phead);
533	}
534	}
535	<pdef>({comment}[^\n]*) { }
536	<pdef>\/\/* { old_state = YYSTATE; BEGIN(comment); }
537	<pdef>. {
538	if(brace2<=0)
539	{
540	BEGIN(phead);
541	yyless(0);
542	}
543	}
544
545	<phead>({tnl}+{quote}+{strings}+{escquote}+{tnl}+"{") {
546	#if YYLPDEBUG
547	if(lpverbose>2)printf("0-Len=%d;\n", yyleng);
548	#endif
549	if(check)
550	{
551	printf("Procedure %s (line %d) has OLD-STYLE-HELP!\n",
552	pi->procname, pi->data.s.proc_lineno);
553	}
554	SET_HELP_START(mode, pi, current_pos(0));
555	BEGIN(poldhelp);
556	yyless(0);
557	}
558	<phead>({tnl}+{quote}+{strings}+{eos}) {
559	#if YYLPDEBUG
560	if(lpverbose>2)printf("1-Len=%d;\n", yyleng);
561	#endif
562	BEGIN(phelp);
563	yyless(0);
564	}
565	<phead>{escstrings}+"{" {
566	if(check && yyleng>2)
567	{
568	printf("Procedure %s (line %d) has OLD-STYLE-HELP!\n",
569	pi->procname, pi->data.s.proc_lineno);
570	}
571	#if YYLPDEBUG
572	if(lpverbose>2 && yyleng>2)
573	printf("2-Len=%d, %s;\n", yyleng, pi->procname);
574	#endif
575	SET_HELP_START(mode, pi, current_pos(0));
576	BEGIN(poldhelp);
577	yyless(0);
578	}
579	<phead>. { printf("[%s]", yytext); }
580
581	<poldhelp>{escbrack} { }
582	<poldhelp>"{" {
583	SET_HELP_END(mode, pi, current_pos(0));
584	brace1++; BEGIN(pbody);
585	if(lpverbose)
586	{
587	printf("// HELP from %d to %d\n",
588	(int)pi->data.s.help_start, (int)pi->data.s.help_end);
589	printf("// BODY at line %d,%d (%d)\n", yylplineno,
590	current_pos(0), brace1);
591	}
592	#if YYLPDEBUG > 1
593	printf("BEGIN(pbody){=%d, (=%d, [=%d\n", brace1, brace2, brace3);
594	#endif
595	SET_BODY_START(mode, pi, yylplineno, current_pos(0));
596	#if YYLPDEBUG > 1
597	printf("BODY at %d/%d", yylplineno, current_pos(0));
598	#endif
599	}
600	<poldhelp>\n { yylplineno++; }
601	<poldhelp>. { }
602
603	<phelp>{quote} {
604	old_state = YYSTATE;
605	BEGIN(string);
606	SET_HELP_START(mode, pi, current_pos(1));
607	}
608	<phelp>{tos} {}
609	<phelp>"{" {
610	brace1++; BEGIN(pbody);
611	if(lpverbose)
612	{
613	printf("// HELP from %d to %d\n",
614	(int)pi->data.s.help_start, (int)pi->data.s.help_end);
615	printf("// BODY at line %d,%d (%d)\n", yylplineno,
616	current_pos(0), brace1);
617	}
618	#if YYLPDEBUG > 1
619	printf("BEGIN(pbody){=%d, (=%d, [=%d\n", brace1, brace2, brace3);
620	#endif
621	SET_BODY_START(mode, pi, yylplineno, current_pos(0));
622	#if YYLPDEBUG > 1
623	printf("BODY at %d/%d", yylplineno, current_pos(0));
624	#endif
625	}
626	<phelp>\n { yylplineno++;}
627
628	<pbody>({comment}[^\n]*) { }
629	<pbody>{quote} { quote++; old_state = YYSTATE;
630	BEGIN(string); /* printf("%s", yytext); */
631	}
632
633	<pbody>proc+{tos}+{name}+{tnl}+{paramlist}+{tnl}+"{" {
634	if(check) printf("*** found 2 proc whithin procedure '%s'.\n",
635	pi->procname);
636	yyless(yyleng-1);
637	}
638	<pbody>proc+{tos}+{name}+{tnl}+"{" {
639	if(check) printf("*** found 1 proc whithin procedure '%s'.\n",
640	pi->procname);
641	yyless(yyleng-1);
642	}
643	<pbody>"{" {
644	brace1++;
645	#if YYLPDEBUG > 1
646	printf("line: %d, (%d)%s\n", yylplineno, brace1, yytext);
647	#endif
648	}
649	<pbody>"}" {
650	#if YYLPDEBUG > 1
651	printf("line: %d, (%d)%s\n",
652	yylplineno, brace1, yytext);
653	#endif
654	brace1--;
655	if(brace2>0)
656	{
657	yylp_errno = YYLP_BODY_BR2;
658	return(1);
659	}
660	if(brace3>0)
661	{
662	yylp_errno = YYLP_BODY_BR3;
663	return(1);
664	}
665	if(brace1<=0)
666	{
667	SET_BODY_END(mode, pi, current_pos(yyleng));
668	SET_PROC_END(mode, pi, current_pos(yyleng));
669	#if YYLPDEBUG > 1
670	printf("-%d\n", current_pos(0));
671	#endif
672	BEGIN(INITIAL);
673	}
674	}
675	<pbody>"(" {
676	brace2++; /* printf("%s", yytext); */
677	}
678	<pbody>")" {
679	brace2--; /* printf("%s", yytext); */
680	if(brace2<0) {
681	yylp_errno = YYLP_BODY_TMBR2;
682	return(1);
683	}
684	}
685	<pbody>"[" {
686	brace3++; /* printf("%s", yytext); */
687	}
688	<pbody>"]" {
689	brace3--; /* printf("%s", yytext); */
690	if(brace3<0) {
691	yylp_errno = YYLP_BODY_TMBR3;
692	return(1);
693	}
694	}
695	<pbody>\n { yylplineno++; }
696	<pbody>. { }
697
698	<info>{quote} {
699	quote++; BEGIN(string);
700	found_info++;
701	string_start = current_pos(yyleng);
702	*lib_style = NEW_LIBSTYLE;
703	last_cmd = LP_INFO;
704	}
705	<info>\n { yylplineno++; }
706	<info>. { }
707
708	<string>"\"" { quote--;
709	#ifdef HAVE_NAMESPACES
710	copy_string(mode, pl);
711	#else /* HAVE_NAMESPACES */
712	copy_string(mode);
713	#endif /* HAVE_NAMESPACES */
714	last_cmd = LP_NONE;
715	if(old_state==phelp)
716	{
717	SET_HELP_END(mode, pi, current_pos(0));
718	}
719	BEGIN(old_state); /* printf("%s", yytext); */
720	}
721	<string>(\\\\)\|(\\\") { if (old_state == phelp) IncrCheckSum(*yytext);}
722	<string>\n { yylplineno++; if (old_state == phelp) IncrCheckSum('\n');}
723	<string>. { if (old_state == phelp) IncrCheckSum(*yytext);}
724
725	<pexample>(\/\/[^\n]*) { }
726	<pexample>"\"" { quote++; old_state = YYSTATE;
727	BEGIN(string); /* printf("%s", yytext); */
728	}
729	<pexample>"{" {
730	brace1++; /* printf("(%d)%s", brace1, yytext); */
731	}
732	<pexample>"}" {
733	brace1--; /* printf("(%d)%s", brace1, yytext); */
734	if(brace1<=0) {
735	if(brace2>0) { yylp_errno=YYLP_EX_BR2; return(1); }
736	if(brace3>0) { yylp_errno=YYLP_EX_BR3; return(1); }
737	BEGIN(INITIAL);
738	SET_PROC_END(mode, pi, current_pos(yyleng));
739	}
740	}
741	<pexample>"(" {
742	brace2++; /* printf("%s", yytext); */
743	}
744	<pexample>")" {
745	brace2--; /* printf("%s", yytext); */
746	}
747	<pexample>"[" {
748	brace3++; /* printf("%s", yytext); */
749	}
750	<pexample>"]" {
751	brace3--; /* printf("%s", yytext); */
752	}
753	<pexample>\n { yylplineno++; }
754	<pexample>. { }
755
756	<pestr>"\"" { quote--;
757	BEGIN(pexample); /* printf("%s", yytext); */
758	}
759	<pestr>\\\\ { }
760	<pestr>\\\" { }
761	<pestr>\n { yylplineno++; }
762	<pestr>. { }
763
764	<comment>\*\/ { BEGIN(old_state); }
765	<comment>\n { yylplineno++; }
766	<comment>. { }
767
768	\n { yylplineno++; }
769	\r { }
770	; { p_static = FALSE;
771	#if YYLPDEBUG > 1
772	printf("%s", yytext);
773	#endif
774	}
775	. { p_static = FALSE;
776	yylp_errno = YYLP_BAD_CHAR;
777	#ifdef STANDALONE_PARSER
778	printf("[%d]", *yytext);
779	#else
780	if (text_buffer!=NULL) FreeL((ADDRESS)text_buffer);
781	text_buffer = mstrdup(yytext);
782	#endif
783	#if YYLPDEBUG > 1
784	printf("[%s]", yytext);
785	#endif
786	return(1);
787	}
788
789	%%
790
791	int current_pos(int i)
792	{
793	return(i+offset+(int)(yytext-yylp_buffer_start));
794	}
795
796	int libread(FILE* f, char* buf, int max_size)
797	{ int rc;
798
799	offset = ftell(f);
800	rc = myfread( buf, 1, max_size, f );
801	#if YYLPDEBUG >2
802	printf("fread: %d of %d\n", rc, max_size);
803	#endif
804	yylp_buffer_start = buf;
805	return rc;
806	}
807
808	extern "C" {
809	int yylpwrap()
810	{
811	//printf("======================= YYWRAP ====================\n");
812	if(brace1>0) { yylp_errno=YYLP_MISS_BR1; }
813	if(brace2>0) { yylp_errno=YYLP_MISS_BR2; }
814	if(brace3>0) { yylp_errno=YYLP_MISS_BR3; }
815	if(quote>0) { yylp_errno=YYLP_MISSQUOT; }
816	/* printf("{=%d, (=%d, [=%d\n", brace1, brace2, brace3);/**/
817	if(feof(yyin)) return 1; else return 0;
818	}
819	}
820
821	void reinit_yylp()
822	{
823	brace1 = 0;
824	brace2 = 0;
825	brace3 = 0;
826	quote = 0;
827	yy_init=1;
828	yy_delete_buffer(yy_current_buffer);
829	}
830
831	void make_version(char *p,int what)
832	{
833	char ver[10];
834	char date[16];
835	ver[0]='?'; ver[1]='.'; ver[2]='?'; ver[3]='\0';
836	date[0]='?'; date[1]='\0';
837	if(what) sscanf(p,"%[^=]= %s %*s %10s %16s",ver,date);
838	else sscanf(p,"// %s %s %10s %16s",ver,date);
839	strcpy(libnamebuf,"(");
840	strcat(libnamebuf,ver);
841	strcat(libnamebuf,",");
842	strcat(libnamebuf,date);
843	strcat(libnamebuf,")");
844	if(what && strcmp(libnamebuf, "(?.?,?)")==0)
845	{
846	sscanf(p,"%*[^\"]\"%[^\"]\"",libnamebuf);
847	}
848	//printf("ID=(%d)%s; \n", what, p);
849	}
850
851	#ifdef HAVE_NAMESPACES
852	void copy_string(lp_modes mode, idhdl pl)
853	#else /* HAVE_NAMESPACES */
854	void copy_string(lp_modes mode)
855	#endif /* HAVE_NAMESPACES */
856	{
857	#ifdef STANDALONE_PARSER
858	if (texinfo_out && last_cmd == LP_INFO)
859	{
860	long current_location = ftell(yylpin), i = string_start, quote = 0;
861	char c;
862	printf("$info = <<EOT;\n");
863	fseek (yylpin, i, SEEK_SET);
864	while (i< current_location)
865	{
866	c = fgetc(yylpin);
867	if (c == '\\')
868	{
869	quote = (! quote);
870	}
871	else if (c == '"')
872	{
873	if (! quote) break;
874	}
875	else
876	quote = 0;
877	if (c == '@' \|\| c == '$') putchar('\\');
878	if (c != '\r') putchar(c);
879	i++;
880	}
881	fseek (yylpin, current_location, SEEK_SET);
882	printf("\nEOT\n");
883	}
884	#else
885	if((last_cmd == LP_INFO)&&(mode == GET_INFO))
886	{
887	int i, offset=0;
888	long current_location = ftell(yylpin);
889	int len = (int)(current_pos(0) - string_start);
890	fseek(yylpin, string_start, SEEK_SET);
891	if (text_buffer!=NULL) FreeL((ADDRESS)text_buffer);
892	text_buffer = (char *)AllocL(len+2);
893	myfread(text_buffer, len, 1, yylpin);
894	fseek(yylpin, current_location, SEEK_SET);
895	text_buffer[len]='\0';
896	offset=0;
897	for(i=0;i<=len; i++)
898	{
899	if(text_buffer[i]=='\\' &&
900	(text_buffer[i+1]=='\"' \|\| text_buffer[i+1]=='{' \|\|
901	text_buffer[i+1]=='}' \|\| text_buffer[i+1]=='\\'))
902	{
903	i++;
904	offset++;
905	}
906	if(offset>0) text_buffer[i-offset] = text_buffer[i];
907	}
908	#ifdef HAVE_NAMESPACES
909	if( mode != GET_INFO ) {
910	h0 = enterid( mstrdup("info"), myynest, STRING_CMD,
911	&IDPACKAGE(pl)->idroot, FALSE );
912	if (h0!=NULL)
913	{
914	IDSTRING(h0) = mstrdup(text_buffer);
915	}
916	}
917	#endif /* HAVE_NAMESPACES */
918	}
919	#endif /* STANDALONE_PARSER */
920	}
921
922	void print_init()
923	{
924	printf("Init=%d\n", yy_init);
925	}
926
927	void print_version(lp_modes mode, char *p)
928	{
929	#ifdef STANDALONE_PARSER
930	//printf("loading %s%s", p, libnamebuf);
931	#else
932	if ( mode == LOAD_LIB )
933	{
934	if (BVERBOSE(V_LOAD_LIB) && p!=NULL ) Print(" %s...", p);
935	//Warn( "loading %s%s", p, libnamebuf);
936	}
937	#endif
938	}
939
940	#ifdef STANDALONE_PARSER
941	main( int argc, char *argv[] )
942	{
943	lib_style_types lib_style;
944	main_init(argc, argv);
945	if(yyin == NULL) {
946	fprintf(stderr, "No library found to parse.\n");
947	exit(1);
948	}
949	if (! texinfo_out)
950	{
951	if(lpverbose)printf("Verbose level=%d\n", lpverbose);
952	if(check)printf("Reporting most possible annomalies.\n");
953	if(lpverbose\|\|check)printf("\n");
954
955	printf( " %-15s %20s %s,%s %s,%s %s,%s\n", "Library",
956	"function", "line", "start-eod", "line", "body-eob",
957	"line", "example-eoe");
958	}
959	yylplex(argv[0], argv[0], &lib_style);
960	if(yylp_errno) {
961	printf("ERROR occured: [%d] ", yylp_errno);
962	printf(yylp_errlist[yylp_errno], yylplineno);
963	printf("\n");
964	}
965	else if(pi!=NULL) printpi(pi);
966	if (texinfo_out)
967	printf("1;");
968	exit(0);
969	}
970
971	#endif /* STANDALONE_PARSER */
972	#endif /* HAVE_LIBPARSE */

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

Original Format