1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
/* Based on public-domain code from Berkeley Yacc */
/* routines for printing error messages */
#include "defs.h"
/* String displayed if we can't malloc a buffer for the UTF-8 conversion */
static char *unknown = "<unknown; out of memory>";
void fatal(char *msg)
{
fprintf(stderr, "%s: f - %s\n", myname, msg);
done(2);
}
void no_space(void)
{
fprintf(stderr, "%s: f - out of space\n", myname);
done(2);
}
void open_error(char_os *filename)
{
char *u8 = caml_stat_strdup_of_os(filename);
fprintf(stderr, "%s: f - cannot open \"%s\"\n", myname, (u8 ? u8 : unknown));
done(2);
}
void unexpected_EOF(void)
{
fprintf(stderr, "File \"%s\", line %d: unexpected end-of-file\n",
virtual_input_file_name, lineno);
done(1);
}
static void print_pos(char *st_line, char *st_cptr)
{
char *s;
if (st_line == 0) return;
for (s = st_line; *s != '\n'; ++s)
{
if (isprint((unsigned char) *s) || *s == '\t')
putc(*s, stderr);
else
putc('?', stderr);
}
putc('\n', stderr);
for (s = st_line; s < st_cptr; ++s)
{
if (*s == '\t')
putc('\t', stderr);
else
putc(' ', stderr);
}
putc('^', stderr);
putc('\n', stderr);
}
static Noreturn void gen_error(int st_lineno, char *st_line, char *st_cptr, char *msg)
{
fprintf(stderr, "File \"%s\", line %d: %s\n",
virtual_input_file_name, st_lineno, msg);
print_pos(st_line, st_cptr);
done(1);
}
void syntax_error(int st_lineno, char *st_line, char *st_cptr)
{
gen_error(st_lineno, st_line, st_cptr, "syntax error");
}
void unterminated_comment(int c_lineno, char *c_line, char *c_cptr,
char start_char)
{
gen_error(c_lineno, c_line, c_cptr,
start_char == '/' ? "unmatched /*" : "unmatched (*");
}
void invalid_literal(int s_lineno, char *s_line, char *s_cptr)
{
gen_error(s_lineno, s_line, s_cptr, "cannot use literal as token name");
}
void unterminated_string(int s_lineno, char *s_line, char *s_cptr)
{
gen_error(s_lineno, s_line, s_cptr, "unterminated string");
}
void unterminated_text(int t_lineno, char *t_line, char *t_cptr)
{
gen_error(t_lineno, t_line, t_cptr, "unmatched %{");
}
void illegal_character(char *c_cptr)
{
fprintf(stderr, "File \"%s\", line %d: illegal character\n",
virtual_input_file_name, lineno);
print_pos(line, c_cptr);
done(1);
}
void used_reserved(char *s)
{
fprintf(stderr, "File \"%s\", line %d: illegal use of reserved symbol \
`%s'\n", virtual_input_file_name, lineno, s);
done(1);
}
void tokenized_start(char *s)
{
fprintf(stderr, "File \"%s\", line %d: the start symbol `%s' cannot \
be declared to be a token\n", virtual_input_file_name, lineno, s);
done(1);
}
void retyped_warning(char *s)
{
fprintf(stderr, "File \"%s\", line %d: warning: the type of `%s' has been \
redeclared\n", virtual_input_file_name, lineno, s);
}
void reprec_warning(char *s)
{
fprintf(stderr, "File \"%s\", line %d: warning: the precedence of `%s' has \
been redeclared\n", virtual_input_file_name, lineno, s);
}
void revalued_warning(char *s)
{
fprintf(stderr, "File \"%s\", line %d: warning: the value of `%s' has been \
redeclared\n", virtual_input_file_name, lineno, s);
}
void terminal_start(char *s)
{
fprintf(stderr, "File \"%s\", line %d: the entry point `%s' is a \
token\n", virtual_input_file_name, lineno, s);
done(1);
}
void too_many_entries(void)
{
fprintf(stderr, "File \"%s\", line %d: more than %u entry points\n",
virtual_input_file_name, lineno, MAX_ENTRY_POINT);
done(1);
}
void no_grammar(void)
{
fprintf(stderr, "File \"%s\", line %d: no grammar has been specified\n",
virtual_input_file_name, lineno);
done(1);
}
void terminal_lhs(int s_lineno)
{
fprintf(stderr, "File \"%s\", line %d: a token appears on the lhs \
of a production\n", virtual_input_file_name, s_lineno);
done(1);
}
void prec_redeclared(void)
{
fprintf(stderr, "File \"%s\", line %d: warning: conflicting %%prec \
specifiers\n", virtual_input_file_name, lineno);
}
void unterminated_action(int a_lineno, char *a_line, char *a_cptr)
{
fprintf(stderr, "File \"%s\", line %d: unterminated action\n",
virtual_input_file_name, a_lineno);
print_pos(a_line, a_cptr);
done(1);
}
void unknown_rhs(int i)
{
fprintf(stderr, "File \"%s\", line %d: $%d is unbound\n",
virtual_input_file_name, lineno, i);
done(1);
}
void illegal_token_ref(int i, char *name)
{
fprintf(stderr, "File \"%s\", line %d: $%d refers to terminal `%s', \
which has no argument\n",
virtual_input_file_name, lineno, i, name);
done(1);
}
void default_action_error(void)
{
fprintf(stderr, "File \"%s\", line %d: no action specified for this \
production\n",
virtual_input_file_name, lineno);
done(1);
}
void undefined_goal(char *s)
{
fprintf(stderr, "%s: e - the start symbol `%s' is undefined\n", myname, s);
done(1);
}
void undefined_symbol(char *s)
{
fprintf(stderr, "%s: e - the symbol `%s' is undefined\n", myname, s);
done(1);
}
void entry_without_type(char *s)
{
fprintf(stderr,
"%s: e - no type has been declared for the start symbol `%s'\n",
myname, s);
done(1);
}
void polymorphic_entry_point(char *s)
{
fprintf(stderr,
"%s: e - the start symbol `%s' has a polymorphic type\n",
myname, s);
done(1);
}
void forbidden_conflicts(void)
{
fprintf(stderr,
"%s: the grammar has conflicts, but --strict was specified\n",
myname);
done(1);
}
|
