1815 lines
40 KiB
C
1815 lines
40 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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/* */
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/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the Q Public License version 1.0. */
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/* */
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/***********************************************************************/
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/* Based on public-domain code from Berkeley Yacc */
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/* $Id$ */
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#include <string.h>
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#include "defs.h"
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/* The line size must be a positive integer. One hundred was chosen */
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/* because few lines in Yacc input grammars exceed 100 characters. */
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/* Note that if a line exceeds LINESIZE characters, the line buffer */
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/* will be expanded to accomodate it. */
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#define LINESIZE 100
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char *cache;
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int cinc, cache_size;
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int ntags, tagmax;
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char **tag_table;
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char saw_eof, unionized;
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char *cptr, *line;
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int linesize;
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bucket *goal;
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int prec;
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int gensym;
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char last_was_action;
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int maxitems;
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bucket **pitem;
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int maxrules;
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bucket **plhs;
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int name_pool_size;
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char *name_pool;
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char line_format[] = "(* Line %d, file %s *)\n";
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void start_rule (register bucket *bp, int s_lineno);
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void cachec(int c)
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{
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assert(cinc >= 0);
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if (cinc >= cache_size)
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{
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cache_size += 256;
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cache = REALLOC(cache, cache_size);
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if (cache == 0) no_space();
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}
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cache[cinc] = c;
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++cinc;
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}
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void get_line(void)
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{
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register FILE *f = input_file;
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register int c;
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register int i;
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if (saw_eof || (c = getc(f)) == EOF)
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{
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if (line) { FREE(line); line = 0; }
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cptr = 0;
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saw_eof = 1;
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return;
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}
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if (line == 0 || linesize != (LINESIZE + 1))
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{
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if (line) FREE(line);
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linesize = LINESIZE + 1;
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line = MALLOC(linesize);
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if (line == 0) no_space();
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}
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i = 0;
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++lineno;
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for (;;)
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{
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line[i] = c;
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if (++i >= linesize)
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{
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linesize += LINESIZE;
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line = REALLOC(line, linesize);
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if (line == 0) no_space();
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}
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if (c == '\n') { line[i] = '\0'; cptr = line; return; }
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c = getc(f);
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if (c == EOF) { saw_eof = 1; c = '\n'; }
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}
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}
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char *
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dup_line(void)
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{
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register char *p, *s, *t;
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if (line == 0) return (0);
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s = line;
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while (*s != '\n') ++s;
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p = MALLOC(s - line + 1);
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if (p == 0) no_space();
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s = line;
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t = p;
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while ((*t++ = *s++) != '\n') continue;
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return (p);
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}
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void skip_comment(void)
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{
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register char *s;
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int st_lineno = lineno;
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char *st_line = dup_line();
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char *st_cptr = st_line + (cptr - line);
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s = cptr + 2;
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for (;;)
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{
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if (*s == '*' && s[1] == '/')
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{
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cptr = s + 2;
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FREE(st_line);
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return;
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}
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if (*s == '\n')
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{
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get_line();
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if (line == 0)
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unterminated_comment(st_lineno, st_line, st_cptr);
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s = cptr;
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}
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else
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++s;
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}
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}
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int
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nextc(void)
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{
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register char *s;
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if (line == 0)
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{
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get_line();
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if (line == 0)
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return (EOF);
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}
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s = cptr;
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for (;;)
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{
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switch (*s)
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{
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case '\n':
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get_line();
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if (line == 0) return (EOF);
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s = cptr;
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break;
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case ' ':
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case '\t':
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case '\f':
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case '\r':
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case '\v':
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case ',':
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case ';':
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++s;
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break;
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case '\\':
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cptr = s;
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return ('%');
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case '/':
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if (s[1] == '*')
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{
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cptr = s;
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skip_comment();
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s = cptr;
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break;
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}
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else if (s[1] == '/')
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{
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get_line();
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if (line == 0) return (EOF);
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s = cptr;
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break;
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}
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/* fall through */
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default:
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cptr = s;
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return (*s);
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}
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}
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}
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int
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keyword(void)
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{
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register int c;
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char *t_cptr = cptr;
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c = *++cptr;
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if (isalpha(c))
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{
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cinc = 0;
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for (;;)
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{
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if (isalpha(c))
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{
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if (isupper(c)) c = tolower(c);
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cachec(c);
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}
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else if (isdigit(c) || c == '_' || c == '.' || c == '$')
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cachec(c);
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else
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break;
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c = *++cptr;
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}
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cachec(NUL);
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if (strcmp(cache, "token") == 0 || strcmp(cache, "term") == 0)
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return (TOKEN);
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if (strcmp(cache, "type") == 0)
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return (TYPE);
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if (strcmp(cache, "left") == 0)
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return (LEFT);
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if (strcmp(cache, "right") == 0)
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return (RIGHT);
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if (strcmp(cache, "nonassoc") == 0 || strcmp(cache, "binary") == 0)
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return (NONASSOC);
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if (strcmp(cache, "start") == 0)
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return (START);
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if (strcmp(cache, "union") == 0)
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return (UNION);
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if (strcmp(cache, "ident") == 0)
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return (IDENT);
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}
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else
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{
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++cptr;
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if (c == '{')
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return (TEXT);
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if (c == '%' || c == '\\')
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return (MARK);
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if (c == '<')
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return (LEFT);
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if (c == '>')
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return (RIGHT);
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if (c == '0')
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return (TOKEN);
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if (c == '2')
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return (NONASSOC);
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}
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syntax_error(lineno, line, t_cptr);
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/*NOTREACHED*/
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return 0;
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}
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void copy_ident(void)
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{
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register int c;
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register FILE *f = output_file;
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c = nextc();
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if (c == EOF) unexpected_EOF();
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if (c != '"') syntax_error(lineno, line, cptr);
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++outline;
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fprintf(f, "#ident \"");
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for (;;)
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{
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c = *++cptr;
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if (c == '\n')
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{
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fprintf(f, "\"\n");
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return;
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}
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putc(c, f);
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if (c == '"')
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{
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putc('\n', f);
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++cptr;
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return;
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}
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}
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}
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void copy_text(void)
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{
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register int c;
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int quote;
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register FILE *f = text_file;
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int need_newline = 0;
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int t_lineno = lineno;
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char *t_line = dup_line();
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char *t_cptr = t_line + (cptr - line - 2);
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if (*cptr == '\n')
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{
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get_line();
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if (line == 0)
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unterminated_text(t_lineno, t_line, t_cptr);
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}
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fprintf(f, "# %d \"%s\"\n", lineno, input_file_name);
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loop:
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c = *cptr++;
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switch (c)
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{
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case '\n':
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putc('\n', f);
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need_newline = 0;
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get_line();
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if (line) goto loop;
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unterminated_text(t_lineno, t_line, t_cptr);
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case '"':
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{
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int s_lineno = lineno;
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char *s_line = dup_line();
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char *s_cptr = s_line + (cptr - line - 1);
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quote = c;
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putc(c, f);
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for (;;)
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{
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c = *cptr++;
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putc(c, f);
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if (c == quote)
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{
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need_newline = 1;
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FREE(s_line);
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goto loop;
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}
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if (c == '\n')
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unterminated_string(s_lineno, s_line, s_cptr);
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if (c == '\\')
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{
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c = *cptr++;
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putc(c, f);
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if (c == '\n')
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{
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get_line();
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if (line == 0)
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unterminated_string(s_lineno, s_line, s_cptr);
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}
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}
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}
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}
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case '\'':
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putc(c, f);
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if (cptr[0] != 0 && cptr[0] != '\\' && cptr[1] == '\'') {
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fwrite(cptr, 1, 2, f);
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cptr += 2;
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} else
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if (cptr[0] == '\\' && isdigit(cptr[1]) && isdigit(cptr[2]) &&
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isdigit(cptr[3]) && cptr[4] == '\'') {
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fwrite(cptr, 1, 5, f);
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cptr += 5;
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} else
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if (cptr[0] == '\\' && cptr[2] == '\'') {
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fwrite(cptr, 1, 3, f);
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cptr += 3;
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}
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goto loop;
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case '(':
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putc(c, f);
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need_newline = 1;
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c = *cptr;
|
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if (c == '*')
|
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{
|
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int c_lineno = lineno;
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char *c_line = dup_line();
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char *c_cptr = c_line + (cptr - line - 1);
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putc('*', f);
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++cptr;
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for (;;)
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{
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c = *cptr++;
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putc(c, f);
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if (c == '*' && *cptr == ')')
|
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{
|
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putc(')', f);
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++cptr;
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FREE(c_line);
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goto loop;
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}
|
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if (c == '\n')
|
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{
|
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get_line();
|
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if (line == 0)
|
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unterminated_comment(c_lineno, c_line, c_cptr);
|
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}
|
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}
|
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}
|
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need_newline = 1;
|
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goto loop;
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|
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case '%':
|
|
case '\\':
|
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if (*cptr == '}')
|
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{
|
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if (need_newline) putc('\n', f);
|
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++cptr;
|
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FREE(t_line);
|
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return;
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}
|
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/* fall through */
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default:
|
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putc(c, f);
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need_newline = 1;
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goto loop;
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}
|
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}
|
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|
|
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void copy_union(void)
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{
|
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register int c;
|
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int quote;
|
|
int depth;
|
|
int u_lineno = lineno;
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char *u_line = dup_line();
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char *u_cptr = u_line + (cptr - line - 6);
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|
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if (unionized) over_unionized(cptr - 6);
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unionized = 1;
|
|
|
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if (!lflag)
|
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fprintf(text_file, line_format, lineno, input_file_name);
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|
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fprintf(text_file, "typedef union");
|
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if (dflag) fprintf(union_file, "typedef union");
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|
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depth = 1;
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cptr++;
|
|
|
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loop:
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c = *cptr++;
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putc(c, text_file);
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if (dflag) putc(c, union_file);
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switch (c)
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{
|
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case '\n':
|
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get_line();
|
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if (line == 0) unterminated_union(u_lineno, u_line, u_cptr);
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goto loop;
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|
|
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case '{':
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++depth;
|
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goto loop;
|
|
|
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case '}':
|
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--depth;
|
|
if (c == '}' && depth == 0) {
|
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fprintf(text_file, " YYSTYPE;\n");
|
|
FREE(u_line);
|
|
return;
|
|
}
|
|
goto loop;
|
|
|
|
case '\'':
|
|
case '"':
|
|
{
|
|
int s_lineno = lineno;
|
|
char *s_line = dup_line();
|
|
char *s_cptr = s_line + (cptr - line - 1);
|
|
|
|
quote = c;
|
|
for (;;)
|
|
{
|
|
c = *cptr++;
|
|
putc(c, text_file);
|
|
if (dflag) putc(c, union_file);
|
|
if (c == quote)
|
|
{
|
|
FREE(s_line);
|
|
goto loop;
|
|
}
|
|
if (c == '\n')
|
|
unterminated_string(s_lineno, s_line, s_cptr);
|
|
if (c == '\\')
|
|
{
|
|
c = *cptr++;
|
|
putc(c, text_file);
|
|
if (dflag) putc(c, union_file);
|
|
if (c == '\n')
|
|
{
|
|
get_line();
|
|
if (line == 0)
|
|
unterminated_string(s_lineno, s_line, s_cptr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
case '(':
|
|
c = *cptr;
|
|
if (c == '*')
|
|
{
|
|
int c_lineno = lineno;
|
|
char *c_line = dup_line();
|
|
char *c_cptr = c_line + (cptr - line - 1);
|
|
|
|
putc('*', text_file);
|
|
if (dflag) putc('*', union_file);
|
|
++cptr;
|
|
for (;;)
|
|
{
|
|
c = *cptr++;
|
|
putc(c, text_file);
|
|
if (dflag) putc(c, union_file);
|
|
if (c == '*' && *cptr == ')')
|
|
{
|
|
putc(')', text_file);
|
|
if (dflag) putc(')', union_file);
|
|
++cptr;
|
|
FREE(c_line);
|
|
goto loop;
|
|
}
|
|
if (c == '\n')
|
|
{
|
|
get_line();
|
|
if (line == 0)
|
|
unterminated_comment(c_lineno, c_line, c_cptr);
|
|
}
|
|
}
|
|
}
|
|
goto loop;
|
|
|
|
default:
|
|
goto loop;
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
hexval(int c)
|
|
{
|
|
if (c >= '0' && c <= '9')
|
|
return (c - '0');
|
|
if (c >= 'A' && c <= 'F')
|
|
return (c - 'A' + 10);
|
|
if (c >= 'a' && c <= 'f')
|
|
return (c - 'a' + 10);
|
|
return (-1);
|
|
}
|
|
|
|
|
|
bucket *
|
|
get_literal(void)
|
|
{
|
|
register int c, quote;
|
|
register int i;
|
|
register int n;
|
|
register char *s;
|
|
register bucket *bp;
|
|
int s_lineno = lineno;
|
|
char *s_line = dup_line();
|
|
char *s_cptr = s_line + (cptr - line);
|
|
|
|
quote = *cptr++;
|
|
cinc = 0;
|
|
for (;;)
|
|
{
|
|
c = *cptr++;
|
|
if (c == quote) break;
|
|
if (c == '\n') unterminated_string(s_lineno, s_line, s_cptr);
|
|
if (c == '\\')
|
|
{
|
|
char *c_cptr = cptr - 1;
|
|
|
|
c = *cptr++;
|
|
switch (c)
|
|
{
|
|
case '\n':
|
|
get_line();
|
|
if (line == 0) unterminated_string(s_lineno, s_line, s_cptr);
|
|
continue;
|
|
|
|
case '0': case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7':
|
|
n = c - '0';
|
|
c = *cptr;
|
|
if (IS_OCTAL(c))
|
|
{
|
|
n = (n << 3) + (c - '0');
|
|
c = *++cptr;
|
|
if (IS_OCTAL(c))
|
|
{
|
|
n = (n << 3) + (c - '0');
|
|
++cptr;
|
|
}
|
|
}
|
|
if (n > MAXCHAR) illegal_character(c_cptr);
|
|
c = n;
|
|
break;
|
|
|
|
case 'x':
|
|
c = *cptr++;
|
|
n = hexval(c);
|
|
if (n < 0 || n >= 16)
|
|
illegal_character(c_cptr);
|
|
for (;;)
|
|
{
|
|
c = *cptr;
|
|
i = hexval(c);
|
|
if (i < 0 || i >= 16) break;
|
|
++cptr;
|
|
n = (n << 4) + i;
|
|
if (n > MAXCHAR) illegal_character(c_cptr);
|
|
}
|
|
c = n;
|
|
break;
|
|
|
|
case 'a': c = 7; break;
|
|
case 'b': c = '\b'; break;
|
|
case 'f': c = '\f'; break;
|
|
case 'n': c = '\n'; break;
|
|
case 'r': c = '\r'; break;
|
|
case 't': c = '\t'; break;
|
|
case 'v': c = '\v'; break;
|
|
}
|
|
}
|
|
cachec(c);
|
|
}
|
|
FREE(s_line);
|
|
|
|
n = cinc;
|
|
s = MALLOC(n);
|
|
if (s == 0) no_space();
|
|
|
|
for (i = 0; i < n; ++i)
|
|
s[i] = cache[i];
|
|
|
|
cinc = 0;
|
|
if (n == 1)
|
|
cachec('\'');
|
|
else
|
|
cachec('"');
|
|
|
|
for (i = 0; i < n; ++i)
|
|
{
|
|
c = ((unsigned char *)s)[i];
|
|
if (c == '\\' || c == cache[0])
|
|
{
|
|
cachec('\\');
|
|
cachec(c);
|
|
}
|
|
else if (isprint(c))
|
|
cachec(c);
|
|
else
|
|
{
|
|
cachec('\\');
|
|
switch (c)
|
|
{
|
|
case 7: cachec('a'); break;
|
|
case '\b': cachec('b'); break;
|
|
case '\f': cachec('f'); break;
|
|
case '\n': cachec('n'); break;
|
|
case '\r': cachec('r'); break;
|
|
case '\t': cachec('t'); break;
|
|
case '\v': cachec('v'); break;
|
|
default:
|
|
cachec(((c >> 6) & 7) + '0');
|
|
cachec(((c >> 3) & 7) + '0');
|
|
cachec((c & 7) + '0');
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (n == 1)
|
|
cachec('\'');
|
|
else
|
|
cachec('"');
|
|
|
|
cachec(NUL);
|
|
bp = lookup(cache);
|
|
bp->class = TERM;
|
|
if (n == 1 && bp->value == UNDEFINED)
|
|
bp->value = *(unsigned char *)s;
|
|
FREE(s);
|
|
|
|
return (bp);
|
|
}
|
|
|
|
|
|
int
|
|
is_reserved(char *name)
|
|
{
|
|
char *s;
|
|
|
|
if (strcmp(name, ".") == 0 ||
|
|
strcmp(name, "$accept") == 0 ||
|
|
strcmp(name, "$end") == 0)
|
|
return (1);
|
|
|
|
if (name[0] == '$' && name[1] == '$' && isdigit(name[2]))
|
|
{
|
|
s = name + 3;
|
|
while (isdigit(*s)) ++s;
|
|
if (*s == NUL) return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
bucket *
|
|
get_name(void)
|
|
{
|
|
register int c;
|
|
|
|
cinc = 0;
|
|
for (c = *cptr; IS_IDENT(c); c = *++cptr)
|
|
cachec(c);
|
|
cachec(NUL);
|
|
|
|
if (is_reserved(cache)) used_reserved(cache);
|
|
|
|
return (lookup(cache));
|
|
}
|
|
|
|
|
|
int
|
|
get_number(void)
|
|
{
|
|
register int c;
|
|
register int n;
|
|
|
|
n = 0;
|
|
for (c = *cptr; isdigit(c); c = *++cptr)
|
|
n = 10*n + (c - '0');
|
|
|
|
return (n);
|
|
}
|
|
|
|
|
|
char *
|
|
get_tag(void)
|
|
{
|
|
register int c;
|
|
register int i;
|
|
register char *s;
|
|
char *t_line = dup_line();
|
|
|
|
cinc = 0;
|
|
while (1) {
|
|
c = *++cptr;
|
|
if (c == EOF) unexpected_EOF();
|
|
if (c == '\n') syntax_error(lineno, line, cptr);
|
|
if (c == '>' && cptr[-1] != '-') break;
|
|
cachec(c);
|
|
}
|
|
++cptr;
|
|
cachec(NUL);
|
|
|
|
for (i = 0; i < ntags; ++i)
|
|
{
|
|
if (strcmp(cache, tag_table[i]) == 0)
|
|
return (tag_table[i]);
|
|
}
|
|
|
|
if (ntags >= tagmax)
|
|
{
|
|
tagmax += 16;
|
|
tag_table = (char **)
|
|
(tag_table ? REALLOC(tag_table, tagmax*sizeof(char *))
|
|
: MALLOC(tagmax*sizeof(char *)));
|
|
if (tag_table == 0) no_space();
|
|
}
|
|
|
|
s = MALLOC(cinc);
|
|
if (s == 0) no_space();
|
|
strcpy(s, cache);
|
|
tag_table[ntags] = s;
|
|
++ntags;
|
|
FREE(t_line);
|
|
return (s);
|
|
}
|
|
|
|
|
|
void declare_tokens(int assoc)
|
|
{
|
|
register int c;
|
|
register bucket *bp;
|
|
int value;
|
|
char *tag = 0;
|
|
|
|
if (assoc != TOKEN) ++prec;
|
|
|
|
c = nextc();
|
|
if (c == EOF) unexpected_EOF();
|
|
if (c == '<')
|
|
{
|
|
tag = get_tag();
|
|
c = nextc();
|
|
if (c == EOF) unexpected_EOF();
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
if (isalpha(c) || c == '_' || c == '.' || c == '$')
|
|
bp = get_name();
|
|
else if (c == '\'' || c == '"')
|
|
bp = get_literal();
|
|
else
|
|
return;
|
|
|
|
if (bp == goal) tokenized_start(bp->name);
|
|
bp->class = TERM;
|
|
|
|
if (tag)
|
|
{
|
|
if (bp->tag && tag != bp->tag)
|
|
retyped_warning(bp->name);
|
|
bp->tag = tag;
|
|
}
|
|
|
|
if (assoc == TOKEN)
|
|
{
|
|
bp->true_token = 1;
|
|
}
|
|
else
|
|
{
|
|
if (bp->prec && prec != bp->prec)
|
|
reprec_warning(bp->name);
|
|
bp->assoc = assoc;
|
|
bp->prec = prec;
|
|
}
|
|
|
|
if (strcmp(bp->name, "EOF") == 0)
|
|
bp->value = 0;
|
|
|
|
c = nextc();
|
|
if (c == EOF) unexpected_EOF();
|
|
value = UNDEFINED;
|
|
if (isdigit(c))
|
|
{
|
|
value = get_number();
|
|
if (bp->value != UNDEFINED && value != bp->value)
|
|
revalued_warning(bp->name);
|
|
bp->value = value;
|
|
c = nextc();
|
|
if (c == EOF) unexpected_EOF();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void declare_types(void)
|
|
{
|
|
register int c;
|
|
register bucket *bp;
|
|
char *tag;
|
|
|
|
c = nextc();
|
|
if (c == EOF) unexpected_EOF();
|
|
if (c != '<') syntax_error(lineno, line, cptr);
|
|
tag = get_tag();
|
|
|
|
for (;;)
|
|
{
|
|
c = nextc();
|
|
if (isalpha(c) || c == '_' || c == '.' || c == '$')
|
|
bp = get_name();
|
|
else if (c == '\'' || c == '"')
|
|
bp = get_literal();
|
|
else
|
|
return;
|
|
|
|
if (bp->tag && tag != bp->tag)
|
|
retyped_warning(bp->name);
|
|
bp->tag = tag;
|
|
}
|
|
}
|
|
|
|
|
|
void declare_start(void)
|
|
{
|
|
register int c;
|
|
register bucket *bp;
|
|
static int entry_counter = 0;
|
|
|
|
for (;;) {
|
|
c = nextc();
|
|
if (!isalpha(c) && c != '_' && c != '.' && c != '$') return;
|
|
bp = get_name();
|
|
|
|
if (bp->class == TERM)
|
|
terminal_start(bp->name);
|
|
bp->entry = ++entry_counter;
|
|
if (entry_counter == 256)
|
|
too_many_entries();
|
|
}
|
|
}
|
|
|
|
|
|
void read_declarations(void)
|
|
{
|
|
register int c, k;
|
|
|
|
cache_size = 256;
|
|
cache = MALLOC(cache_size);
|
|
if (cache == 0) no_space();
|
|
|
|
for (;;)
|
|
{
|
|
c = nextc();
|
|
if (c == EOF) unexpected_EOF();
|
|
if (c != '%') syntax_error(lineno, line, cptr);
|
|
switch (k = keyword())
|
|
{
|
|
case MARK:
|
|
return;
|
|
|
|
case IDENT:
|
|
copy_ident();
|
|
break;
|
|
|
|
case TEXT:
|
|
copy_text();
|
|
break;
|
|
|
|
case UNION:
|
|
copy_union();
|
|
break;
|
|
|
|
case TOKEN:
|
|
case LEFT:
|
|
case RIGHT:
|
|
case NONASSOC:
|
|
declare_tokens(k);
|
|
break;
|
|
|
|
case TYPE:
|
|
declare_types();
|
|
break;
|
|
|
|
case START:
|
|
declare_start();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void output_token_type(void)
|
|
{
|
|
bucket * bp;
|
|
int n;
|
|
|
|
fprintf(interface_file, "type token =\n");
|
|
fprintf(output_file, "type token =\n");
|
|
n = 0;
|
|
for (bp = first_symbol; bp; bp = bp->next) {
|
|
if (bp->class == TERM && bp->true_token) {
|
|
fprintf(interface_file, " %c %s", n == 0 ? ' ' : '|', bp->name);
|
|
fprintf(output_file, " %c %s", n == 0 ? ' ' : '|', bp->name);
|
|
if (bp->tag) {
|
|
/* Print the type expression in parentheses to make sure
|
|
that the constructor is unary */
|
|
fprintf(interface_file, " of (%s)", bp->tag);
|
|
fprintf(output_file, " of (%s)", bp->tag);
|
|
}
|
|
fprintf(interface_file, "\n");
|
|
fprintf(output_file, "\n");
|
|
n++;
|
|
}
|
|
}
|
|
fprintf(interface_file, "\n");
|
|
fprintf(output_file, "\n");
|
|
}
|
|
|
|
void initialize_grammar(void)
|
|
{
|
|
nitems = 4;
|
|
maxitems = 300;
|
|
pitem = (bucket **) MALLOC(maxitems*sizeof(bucket *));
|
|
if (pitem == 0) no_space();
|
|
pitem[0] = 0;
|
|
pitem[1] = 0;
|
|
pitem[2] = 0;
|
|
pitem[3] = 0;
|
|
|
|
nrules = 3;
|
|
maxrules = 100;
|
|
plhs = (bucket **) MALLOC(maxrules*sizeof(bucket *));
|
|
if (plhs == 0) no_space();
|
|
plhs[0] = 0;
|
|
plhs[1] = 0;
|
|
plhs[2] = 0;
|
|
rprec = (short *) MALLOC(maxrules*sizeof(short));
|
|
if (rprec == 0) no_space();
|
|
rprec[0] = 0;
|
|
rprec[1] = 0;
|
|
rprec[2] = 0;
|
|
rassoc = (char *) MALLOC(maxrules*sizeof(char));
|
|
if (rassoc == 0) no_space();
|
|
rassoc[0] = TOKEN;
|
|
rassoc[1] = TOKEN;
|
|
rassoc[2] = TOKEN;
|
|
}
|
|
|
|
|
|
void expand_items(void)
|
|
{
|
|
maxitems += 300;
|
|
pitem = (bucket **) REALLOC(pitem, maxitems*sizeof(bucket *));
|
|
if (pitem == 0) no_space();
|
|
}
|
|
|
|
|
|
void expand_rules(void)
|
|
{
|
|
maxrules += 100;
|
|
plhs = (bucket **) REALLOC(plhs, maxrules*sizeof(bucket *));
|
|
if (plhs == 0) no_space();
|
|
rprec = (short *) REALLOC(rprec, maxrules*sizeof(short));
|
|
if (rprec == 0) no_space();
|
|
rassoc = (char *) REALLOC(rassoc, maxrules*sizeof(char));
|
|
if (rassoc == 0) no_space();
|
|
}
|
|
|
|
|
|
void advance_to_start(void)
|
|
{
|
|
register int c;
|
|
register bucket *bp;
|
|
char *s_cptr;
|
|
int s_lineno;
|
|
|
|
for (;;)
|
|
{
|
|
c = nextc();
|
|
if (c != '%') break;
|
|
s_cptr = cptr;
|
|
switch (keyword())
|
|
{
|
|
case MARK:
|
|
no_grammar();
|
|
|
|
case TEXT:
|
|
copy_text();
|
|
break;
|
|
|
|
case START:
|
|
declare_start();
|
|
break;
|
|
|
|
default:
|
|
syntax_error(lineno, line, s_cptr);
|
|
}
|
|
}
|
|
|
|
c = nextc();
|
|
if (!isalpha(c) && c != '_' && c != '.' && c != '_')
|
|
syntax_error(lineno, line, cptr);
|
|
bp = get_name();
|
|
if (goal == 0)
|
|
{
|
|
if (bp->class == TERM)
|
|
terminal_start(bp->name);
|
|
goal = bp;
|
|
}
|
|
|
|
s_lineno = lineno;
|
|
c = nextc();
|
|
if (c == EOF) unexpected_EOF();
|
|
if (c != ':') syntax_error(lineno, line, cptr);
|
|
start_rule(bp, s_lineno);
|
|
++cptr;
|
|
}
|
|
|
|
|
|
int at_first;
|
|
|
|
void start_rule(register bucket *bp, int s_lineno)
|
|
{
|
|
if (bp->class == TERM)
|
|
terminal_lhs(s_lineno);
|
|
bp->class = NONTERM;
|
|
if (nrules >= maxrules)
|
|
expand_rules();
|
|
plhs[nrules] = bp;
|
|
rprec[nrules] = UNDEFINED;
|
|
rassoc[nrules] = TOKEN;
|
|
at_first = 1;
|
|
}
|
|
|
|
|
|
void end_rule(void)
|
|
{
|
|
if (!last_was_action) default_action_error();
|
|
|
|
last_was_action = 0;
|
|
if (nitems >= maxitems) expand_items();
|
|
pitem[nitems] = 0;
|
|
++nitems;
|
|
++nrules;
|
|
}
|
|
|
|
|
|
void insert_empty_rule(void)
|
|
{
|
|
register bucket *bp, **bpp;
|
|
|
|
assert(cache);
|
|
sprintf(cache, "$$%d", ++gensym);
|
|
bp = make_bucket(cache);
|
|
last_symbol->next = bp;
|
|
last_symbol = bp;
|
|
bp->tag = plhs[nrules]->tag;
|
|
bp->class = NONTERM;
|
|
|
|
if ((nitems += 2) > maxitems)
|
|
expand_items();
|
|
bpp = pitem + nitems - 1;
|
|
*bpp-- = bp;
|
|
while ((bpp[0] = bpp[-1])) --bpp;
|
|
|
|
if (++nrules >= maxrules)
|
|
expand_rules();
|
|
plhs[nrules] = plhs[nrules-1];
|
|
plhs[nrules-1] = bp;
|
|
rprec[nrules] = rprec[nrules-1];
|
|
rprec[nrules-1] = 0;
|
|
rassoc[nrules] = rassoc[nrules-1];
|
|
rassoc[nrules-1] = TOKEN;
|
|
}
|
|
|
|
|
|
void add_symbol(void)
|
|
{
|
|
register int c;
|
|
register bucket *bp;
|
|
int s_lineno = lineno;
|
|
char *ecptr = cptr;
|
|
|
|
c = *cptr;
|
|
if (c == '\'' || c == '"')
|
|
bp = get_literal();
|
|
else
|
|
bp = get_name();
|
|
|
|
c = nextc();
|
|
if (c == ':')
|
|
{
|
|
end_rule();
|
|
start_rule(bp, s_lineno);
|
|
++cptr;
|
|
return;
|
|
}
|
|
|
|
if (last_was_action) syntax_error (lineno, line, ecptr);
|
|
last_was_action = 0;
|
|
|
|
if (++nitems > maxitems)
|
|
expand_items();
|
|
pitem[nitems-1] = bp;
|
|
}
|
|
|
|
|
|
void copy_action(void)
|
|
{
|
|
register int c;
|
|
register int i, n;
|
|
int depth;
|
|
int quote;
|
|
bucket *item;
|
|
char *tagres;
|
|
register FILE *f = action_file;
|
|
int a_lineno = lineno;
|
|
char *a_line = dup_line();
|
|
char *a_cptr = a_line + (cptr - line);
|
|
|
|
if (last_was_action) syntax_error (lineno, line, cptr);
|
|
last_was_action = 1;
|
|
|
|
/*
|
|
fprintf(f, "(* Rule %d, file %s, line %d *)\n",
|
|
nrules-2, input_file_name, lineno);
|
|
*/
|
|
if (sflag)
|
|
fprintf(f, "yyact.(%d) <- (fun parser_env ->\n", nrules-2);
|
|
else
|
|
fprintf(f, "; (fun parser_env ->\n");
|
|
|
|
n = 0;
|
|
for (i = nitems - 1; pitem[i]; --i) ++n;
|
|
|
|
for (i = 1; i <= n; i++) {
|
|
item = pitem[nitems + i - n - 1];
|
|
if (item->class == TERM && !item->tag) continue;
|
|
fprintf(f, " let _%d = ", i);
|
|
if (item->tag)
|
|
fprintf(f, "(peek_val parser_env %d : %s) in\n", n - i, item->tag);
|
|
else if (sflag)
|
|
fprintf(f, "peek_val parser_env %d in\n", n - i);
|
|
else
|
|
fprintf(f, "(peek_val parser_env %d : '%s) in\n", n - i, item->name);
|
|
}
|
|
fprintf(f, " Obj.repr((\n");
|
|
fprintf(f, "# %d \"%s\"\n", lineno, input_file_name);
|
|
for (i = cptr - line; i >= 0; i--) fputc(' ', f);
|
|
|
|
depth = 1;
|
|
cptr++;
|
|
|
|
loop:
|
|
c = *cptr;
|
|
if (c == '$')
|
|
{
|
|
if (isdigit(cptr[1]))
|
|
{
|
|
++cptr;
|
|
i = get_number();
|
|
|
|
if (i <= 0 || i > n)
|
|
unknown_rhs(i);
|
|
item = pitem[nitems + i - n - 1];
|
|
if (item->class == TERM && !item->tag)
|
|
illegal_token_ref(i, item->name);
|
|
fprintf(f, "_%d", i);
|
|
goto loop;
|
|
}
|
|
}
|
|
if (isalpha(c) || c == '_' || c == '$')
|
|
{
|
|
do
|
|
{
|
|
putc(c, f);
|
|
c = *++cptr;
|
|
} while (isalnum(c) || c == '_' || c == '$');
|
|
goto loop;
|
|
}
|
|
if (c == '}' && depth == 1) {
|
|
cptr++;
|
|
tagres = plhs[nrules]->tag;
|
|
if (tagres)
|
|
fprintf(f, ") : %s))\n", tagres);
|
|
else if (sflag)
|
|
fprintf(f, ")))\n");
|
|
else
|
|
fprintf(f, ") : '%s))\n", plhs[nrules]->name);
|
|
if (sflag)
|
|
fprintf(f, "\n");
|
|
return;
|
|
}
|
|
putc(c, f);
|
|
++cptr;
|
|
switch (c)
|
|
{
|
|
case '\n':
|
|
get_line();
|
|
if (line) goto loop;
|
|
unterminated_action(a_lineno, a_line, a_cptr);
|
|
|
|
case '{':
|
|
++depth;
|
|
goto loop;
|
|
|
|
case '}':
|
|
--depth;
|
|
goto loop;
|
|
|
|
case '"':
|
|
{
|
|
int s_lineno = lineno;
|
|
char *s_line = dup_line();
|
|
char *s_cptr = s_line + (cptr - line - 1);
|
|
|
|
quote = c;
|
|
for (;;)
|
|
{
|
|
c = *cptr++;
|
|
putc(c, f);
|
|
if (c == quote)
|
|
{
|
|
FREE(s_line);
|
|
goto loop;
|
|
}
|
|
if (c == '\n')
|
|
unterminated_string(s_lineno, s_line, s_cptr);
|
|
if (c == '\\')
|
|
{
|
|
c = *cptr++;
|
|
putc(c, f);
|
|
if (c == '\n')
|
|
{
|
|
get_line();
|
|
if (line == 0)
|
|
unterminated_string(s_lineno, s_line, s_cptr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
case '\'':
|
|
if (cptr[0] != 0 && cptr[0] != '\\' && cptr[1] == '\'') {
|
|
fwrite(cptr, 1, 2, f);
|
|
cptr += 2;
|
|
} else
|
|
if (cptr[0] == '\\' && isdigit(cptr[1]) && isdigit(cptr[2]) &&
|
|
isdigit(cptr[3]) && cptr[4] == '\'') {
|
|
fwrite(cptr, 1, 5, f);
|
|
cptr += 5;
|
|
} else
|
|
if (cptr[0] == '\\' && cptr[2] == '\'') {
|
|
fwrite(cptr, 1, 3, f);
|
|
cptr += 3;
|
|
}
|
|
goto loop;
|
|
|
|
case '(':
|
|
c = *cptr;
|
|
if (c == '*')
|
|
{
|
|
int c_lineno = lineno;
|
|
char *c_line = dup_line();
|
|
char *c_cptr = c_line + (cptr - line - 1);
|
|
|
|
putc('*', f);
|
|
++cptr;
|
|
for (;;)
|
|
{
|
|
c = *cptr++;
|
|
putc(c, f);
|
|
if (c == '*' && *cptr == ')')
|
|
{
|
|
putc(')', f);
|
|
++cptr;
|
|
FREE(c_line);
|
|
goto loop;
|
|
}
|
|
if (c == '\n')
|
|
{
|
|
get_line();
|
|
if (line == 0)
|
|
unterminated_comment(c_lineno, c_line, c_cptr);
|
|
}
|
|
}
|
|
}
|
|
goto loop;
|
|
|
|
default:
|
|
goto loop;
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
mark_symbol(void)
|
|
{
|
|
register int c;
|
|
register bucket *bp;
|
|
|
|
c = cptr[1];
|
|
if (c == '%' || c == '\\')
|
|
{
|
|
cptr += 2;
|
|
return (1);
|
|
}
|
|
|
|
if (c == '=')
|
|
cptr += 2;
|
|
else if ((c == 'p' || c == 'P') &&
|
|
((c = cptr[2]) == 'r' || c == 'R') &&
|
|
((c = cptr[3]) == 'e' || c == 'E') &&
|
|
((c = cptr[4]) == 'c' || c == 'C') &&
|
|
((c = cptr[5], !IS_IDENT(c))))
|
|
cptr += 5;
|
|
else
|
|
syntax_error(lineno, line, cptr);
|
|
|
|
c = nextc();
|
|
if (isalpha(c) || c == '_' || c == '.' || c == '$')
|
|
bp = get_name();
|
|
else if (c == '\'' || c == '"')
|
|
bp = get_literal();
|
|
else
|
|
{
|
|
syntax_error(lineno, line, cptr);
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
if (rprec[nrules] != UNDEFINED && bp->prec != rprec[nrules])
|
|
prec_redeclared();
|
|
|
|
rprec[nrules] = bp->prec;
|
|
rassoc[nrules] = bp->assoc;
|
|
return (0);
|
|
}
|
|
|
|
|
|
void read_grammar(void)
|
|
{
|
|
register int c;
|
|
|
|
initialize_grammar();
|
|
advance_to_start();
|
|
|
|
for (;;)
|
|
{
|
|
c = nextc();
|
|
if (c == '|' && at_first){
|
|
++cptr;
|
|
c = nextc();
|
|
}
|
|
at_first = 0;
|
|
if (c == EOF) break;
|
|
if (isalpha(c) || c == '_' || c == '.' || c == '$' || c == '\'' ||
|
|
c == '"')
|
|
add_symbol();
|
|
else if (c == '{' || c == '=')
|
|
copy_action();
|
|
else if (c == '|')
|
|
{
|
|
end_rule();
|
|
start_rule(plhs[nrules-1], 0);
|
|
++cptr;
|
|
}
|
|
else if (c == '%')
|
|
{
|
|
if (mark_symbol()) break;
|
|
}
|
|
else
|
|
syntax_error(lineno, line, cptr);
|
|
}
|
|
end_rule();
|
|
}
|
|
|
|
|
|
void free_tags(void)
|
|
{
|
|
register int i;
|
|
|
|
if (tag_table == 0) return;
|
|
|
|
for (i = 0; i < ntags; ++i)
|
|
{
|
|
assert(tag_table[i]);
|
|
FREE(tag_table[i]);
|
|
}
|
|
FREE(tag_table);
|
|
}
|
|
|
|
|
|
void pack_names(void)
|
|
{
|
|
register bucket *bp;
|
|
register char *p, *s, *t;
|
|
|
|
name_pool_size = 13; /* 13 == sizeof("$end") + sizeof("$accept") */
|
|
for (bp = first_symbol; bp; bp = bp->next)
|
|
name_pool_size += strlen(bp->name) + 1;
|
|
name_pool = MALLOC(name_pool_size);
|
|
if (name_pool == 0) no_space();
|
|
|
|
strcpy(name_pool, "$accept");
|
|
strcpy(name_pool+8, "$end");
|
|
t = name_pool + 13;
|
|
for (bp = first_symbol; bp; bp = bp->next)
|
|
{
|
|
p = t;
|
|
s = bp->name;
|
|
while ((*t++ = *s++)) continue;
|
|
FREE(bp->name);
|
|
bp->name = p;
|
|
}
|
|
}
|
|
|
|
|
|
void check_symbols(void)
|
|
{
|
|
register bucket *bp;
|
|
|
|
if (goal->class == UNKNOWN)
|
|
undefined_goal(goal->name);
|
|
|
|
for (bp = first_symbol; bp; bp = bp->next)
|
|
{
|
|
if (bp->class == UNKNOWN)
|
|
{
|
|
undefined_symbol_warning(bp->name);
|
|
bp->class = TERM;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void pack_symbols(void)
|
|
{
|
|
register bucket *bp;
|
|
register bucket **v;
|
|
register int i, j, k, n;
|
|
|
|
nsyms = 2;
|
|
ntokens = 1;
|
|
for (bp = first_symbol; bp; bp = bp->next)
|
|
{
|
|
++nsyms;
|
|
if (bp->class == TERM) ++ntokens;
|
|
}
|
|
start_symbol = ntokens;
|
|
nvars = nsyms - ntokens;
|
|
|
|
symbol_name = (char **) MALLOC(nsyms*sizeof(char *));
|
|
if (symbol_name == 0) no_space();
|
|
symbol_value = (short *) MALLOC(nsyms*sizeof(short));
|
|
if (symbol_value == 0) no_space();
|
|
symbol_prec = (short *) MALLOC(nsyms*sizeof(short));
|
|
if (symbol_prec == 0) no_space();
|
|
symbol_assoc = MALLOC(nsyms);
|
|
if (symbol_assoc == 0) no_space();
|
|
symbol_tag = (char **) MALLOC(nsyms*sizeof(char *));
|
|
if (symbol_tag == 0) no_space();
|
|
symbol_true_token = (char *) MALLOC(nsyms*sizeof(char));
|
|
if (symbol_true_token == 0) no_space();
|
|
|
|
v = (bucket **) MALLOC(nsyms*sizeof(bucket *));
|
|
if (v == 0) no_space();
|
|
|
|
v[0] = 0;
|
|
v[start_symbol] = 0;
|
|
|
|
i = 1;
|
|
j = start_symbol + 1;
|
|
for (bp = first_symbol; bp; bp = bp->next)
|
|
{
|
|
if (bp->class == TERM)
|
|
v[i++] = bp;
|
|
else
|
|
v[j++] = bp;
|
|
}
|
|
assert(i == ntokens && j == nsyms);
|
|
|
|
for (i = 1; i < ntokens; ++i)
|
|
v[i]->index = i;
|
|
|
|
goal->index = start_symbol + 1;
|
|
k = start_symbol + 2;
|
|
while (++i < nsyms)
|
|
if (v[i] != goal)
|
|
{
|
|
v[i]->index = k;
|
|
++k;
|
|
}
|
|
|
|
goal->value = 0;
|
|
k = 1;
|
|
for (i = start_symbol + 1; i < nsyms; ++i)
|
|
{
|
|
if (v[i] != goal)
|
|
{
|
|
v[i]->value = k;
|
|
++k;
|
|
}
|
|
}
|
|
|
|
k = 0;
|
|
for (i = 1; i < ntokens; ++i)
|
|
{
|
|
n = v[i]->value;
|
|
if (n > 256)
|
|
{
|
|
for (j = k++; j > 0 && symbol_value[j-1] > n; --j)
|
|
symbol_value[j] = symbol_value[j-1];
|
|
symbol_value[j] = n;
|
|
}
|
|
}
|
|
|
|
if (v[1]->value == UNDEFINED)
|
|
v[1]->value = 256;
|
|
|
|
j = 0;
|
|
n = 257;
|
|
for (i = 2; i < ntokens; ++i)
|
|
{
|
|
if (v[i]->value == UNDEFINED)
|
|
{
|
|
while (j < k && n == symbol_value[j])
|
|
{
|
|
while (++j < k && n == symbol_value[j]) continue;
|
|
++n;
|
|
}
|
|
v[i]->value = n;
|
|
++n;
|
|
}
|
|
}
|
|
|
|
symbol_name[0] = name_pool + 8;
|
|
symbol_value[0] = 0;
|
|
symbol_prec[0] = 0;
|
|
symbol_assoc[0] = TOKEN;
|
|
symbol_tag[0] = "";
|
|
symbol_true_token[0] = 0;
|
|
for (i = 1; i < ntokens; ++i)
|
|
{
|
|
symbol_name[i] = v[i]->name;
|
|
symbol_value[i] = v[i]->value;
|
|
symbol_prec[i] = v[i]->prec;
|
|
symbol_assoc[i] = v[i]->assoc;
|
|
symbol_tag[i] = v[i]->tag;
|
|
symbol_true_token[i] = v[i]->true_token;
|
|
}
|
|
symbol_name[start_symbol] = name_pool;
|
|
symbol_value[start_symbol] = -1;
|
|
symbol_prec[start_symbol] = 0;
|
|
symbol_assoc[start_symbol] = TOKEN;
|
|
symbol_tag[start_symbol] = "";
|
|
symbol_true_token[start_symbol] = 0;
|
|
for (++i; i < nsyms; ++i)
|
|
{
|
|
k = v[i]->index;
|
|
symbol_name[k] = v[i]->name;
|
|
symbol_value[k] = v[i]->value;
|
|
symbol_prec[k] = v[i]->prec;
|
|
symbol_assoc[k] = v[i]->assoc;
|
|
symbol_tag[i] = v[i]->tag;
|
|
symbol_true_token[i] = v[i]->true_token;
|
|
}
|
|
|
|
FREE(v);
|
|
}
|
|
|
|
|
|
void make_goal(void)
|
|
{
|
|
static char name[7] = "'\\xxx'";
|
|
bucket * bp;
|
|
bucket * bc;
|
|
|
|
goal = lookup("%entry%");
|
|
ntotalrules = nrules - 2;
|
|
for(bp = first_symbol; bp != 0; bp = bp->next) {
|
|
if (bp->entry) {
|
|
start_rule(goal, 0);
|
|
if (nitems + 2> maxitems)
|
|
expand_items();
|
|
name[2] = '0' + ((bp->entry >> 6) & 7);
|
|
name[3] = '0' + ((bp->entry >> 3) & 7);
|
|
name[4] = '0' + (bp->entry & 7);
|
|
bc = lookup(name);
|
|
bc->class = TERM;
|
|
bc->value = (unsigned char) bp->entry;
|
|
pitem[nitems++] = bc;
|
|
pitem[nitems++] = bp;
|
|
if (bp->tag == NULL)
|
|
entry_without_type(bp->name);
|
|
fprintf(entry_file,
|
|
"let %s (lexfun : Lexing.lexbuf -> token) (lexbuf : Lexing.lexbuf) =\n (yyparse yytables %d lexfun lexbuf : %s)\n",
|
|
bp->name, bp->entry, bp->tag);
|
|
fprintf(interface_file,
|
|
"val %s :\n (Lexing.lexbuf -> token) -> Lexing.lexbuf -> %s\n",
|
|
bp->name,
|
|
bp->tag);
|
|
fprintf(action_file,
|
|
"(* Entry %s *)\n", bp->name);
|
|
if (sflag)
|
|
fprintf(action_file,
|
|
"yyact.(%d) <- (fun parser_env -> raise (YYexit (peek_val parser_env 0)))\n",
|
|
ntotalrules);
|
|
else
|
|
fprintf(action_file,
|
|
"; (fun parser_env -> raise (YYexit (peek_val parser_env 0)))\n");
|
|
ntotalrules++;
|
|
last_was_action = 1;
|
|
end_rule();
|
|
}
|
|
}
|
|
}
|
|
|
|
void pack_grammar(void)
|
|
{
|
|
register int i, j;
|
|
int assoc, prec;
|
|
|
|
ritem = (short *) MALLOC(nitems*sizeof(short));
|
|
if (ritem == 0) no_space();
|
|
rlhs = (short *) MALLOC(nrules*sizeof(short));
|
|
if (rlhs == 0) no_space();
|
|
rrhs = (short *) MALLOC((nrules+1)*sizeof(short));
|
|
if (rrhs == 0) no_space();
|
|
rprec = (short *) REALLOC(rprec, nrules*sizeof(short));
|
|
if (rprec == 0) no_space();
|
|
rassoc = REALLOC(rassoc, nrules);
|
|
if (rassoc == 0) no_space();
|
|
|
|
ritem[0] = -1;
|
|
ritem[1] = goal->index;
|
|
ritem[2] = 0;
|
|
ritem[3] = -2;
|
|
rlhs[0] = 0;
|
|
rlhs[1] = 0;
|
|
rlhs[2] = start_symbol;
|
|
rrhs[0] = 0;
|
|
rrhs[1] = 0;
|
|
rrhs[2] = 1;
|
|
|
|
j = 4;
|
|
for (i = 3; i < nrules; ++i)
|
|
{
|
|
rlhs[i] = plhs[i]->index;
|
|
rrhs[i] = j;
|
|
assoc = TOKEN;
|
|
prec = 0;
|
|
while (pitem[j])
|
|
{
|
|
ritem[j] = pitem[j]->index;
|
|
if (pitem[j]->class == TERM)
|
|
{
|
|
prec = pitem[j]->prec;
|
|
assoc = pitem[j]->assoc;
|
|
}
|
|
++j;
|
|
}
|
|
ritem[j] = -i;
|
|
++j;
|
|
if (rprec[i] == UNDEFINED)
|
|
{
|
|
rprec[i] = prec;
|
|
rassoc[i] = assoc;
|
|
}
|
|
}
|
|
rrhs[i] = j;
|
|
|
|
FREE(plhs);
|
|
FREE(pitem);
|
|
}
|
|
|
|
|
|
void print_grammar(void)
|
|
{
|
|
register int i, j, k;
|
|
int spacing = 0;
|
|
register FILE *f = verbose_file;
|
|
|
|
if (!vflag) return;
|
|
|
|
k = 1;
|
|
for (i = 2; i < nrules; ++i)
|
|
{
|
|
if (rlhs[i] != rlhs[i-1])
|
|
{
|
|
if (i != 2) fprintf(f, "\n");
|
|
fprintf(f, "%4d %s :", i - 2, symbol_name[rlhs[i]]);
|
|
spacing = strlen(symbol_name[rlhs[i]]) + 1;
|
|
}
|
|
else
|
|
{
|
|
fprintf(f, "%4d ", i - 2);
|
|
j = spacing;
|
|
while (--j >= 0) putc(' ', f);
|
|
putc('|', f);
|
|
}
|
|
|
|
while (ritem[k] >= 0)
|
|
{
|
|
fprintf(f, " %s", symbol_name[ritem[k]]);
|
|
++k;
|
|
}
|
|
++k;
|
|
putc('\n', f);
|
|
}
|
|
}
|
|
|
|
|
|
void reader(void)
|
|
{
|
|
create_symbol_table();
|
|
read_declarations();
|
|
output_token_type();
|
|
read_grammar();
|
|
make_goal();
|
|
free_symbol_table();
|
|
free_tags();
|
|
pack_names();
|
|
check_symbols();
|
|
pack_symbols();
|
|
pack_grammar();
|
|
free_symbols();
|
|
print_grammar();
|
|
}
|