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feaee4bd AC |
1 | /* The IGEN simulator generator for GDB, the GNU Debugger. |
2 | ||
ecd75fc8 | 3 | Copyright 2002-2014 Free Software Foundation, Inc. |
feaee4bd AC |
4 | |
5 | Contributed by Andrew Cagney. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
feaee4bd AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | ||
23 | /* Read a table, line by line, from a file. | |
24 | ||
25 | A table line has several forms: | |
26 | ||
27 | Field line: | |
28 | ||
29 | <text> { ":" <text> } | |
30 | type == table_colon_entry | |
31 | ||
32 | Fields points to a NULL terminated list of pointers. | |
33 | ||
34 | Tab indented block: | |
35 | ||
36 | <tab> <text> <nl> { <tab> <text> <nl> } | |
37 | type == table_code_entry | |
38 | ||
39 | The leading tab at the start of each line is discarded. | |
40 | fields[i] is the i'th line with the <nl> discarded. | |
41 | ||
42 | ||
43 | Code block: | |
44 | ||
45 | "{" <ignore-text> <nl> { <text> <nl> } "}" <ignore-text> <nl> | |
46 | type == table_code_entry | |
47 | ||
48 | The leading/trailing {/} lines are discarded. | |
49 | Lines containing two leading spaces have those spaces striped. | |
50 | fields[i] is the i'th line with the <nl> discarded. | |
51 | ||
52 | In addition, the table parser reconises and handles internally the | |
53 | following (when not in a code block): | |
54 | ||
55 | "#" <line-nr> '"' <file> '"' | |
56 | ||
57 | As per CPP/CC, treat following lines as if they were taken from | |
58 | <file> starting at <line-nr> | |
59 | ||
60 | No support for CPP's "#if/#else/#endif" style conditions are | |
61 | planned. */ | |
62 | ||
63 | typedef struct _table table; | |
64 | ||
4e0bf4c4 AC |
65 | typedef enum |
66 | { | |
c906108c SS |
67 | table_colon_entry, |
68 | table_code_entry, | |
4e0bf4c4 AC |
69 | } |
70 | table_entry_type; | |
c906108c SS |
71 | |
72 | ||
73 | typedef struct _table_entry table_entry; | |
4e0bf4c4 AC |
74 | struct _table_entry |
75 | { | |
c906108c SS |
76 | table *file; |
77 | line_ref *line; | |
78 | table_entry_type type; | |
79 | int nr_fields; | |
80 | char **field; | |
81 | }; | |
82 | ||
83 | /* List of directories to search when opening a pushed file. Current | |
84 | directory is always searched first */ | |
85 | typedef struct _table_include table_include; | |
4e0bf4c4 AC |
86 | struct _table_include |
87 | { | |
c906108c SS |
88 | char *dir; |
89 | table_include *next; | |
90 | }; | |
91 | ||
92 | ||
93 | /* Open/read a table file. Since the file is read once during open | |
94 | (and then closed immediatly) there is no close method. */ | |
95 | ||
4e0bf4c4 | 96 | extern table *table_open (const char *file_name); |
c906108c | 97 | |
4e0bf4c4 | 98 | extern table_entry *table_read (table *file); |
c906108c SS |
99 | |
100 | ||
101 | /* Push the the state of the current file and open FILE_NAME. When | |
102 | the end of FILE_NAME is reached, return to the pushed file */ | |
103 | ||
104 | extern void table_push | |
4e0bf4c4 | 105 | (table *file, line_ref *line, table_include *search, const char *file_name); |
c906108c SS |
106 | |
107 | ||
108 | /* Expand the specified field_nr using the internal expansion table. | |
109 | A field is only expanded when explicitly specified. */ | |
110 | ||
4e0bf4c4 | 111 | extern void table_expand_field (table_entry *entry, int field_nr); |
c906108c SS |
112 | |
113 | ||
114 | /* Given a code entry, write the code to FILE. Since any | |
115 | leading/trailing braces were striped as part of the read, they are | |
116 | not written. */ | |
117 | ||
4e0bf4c4 | 118 | extern void table_print_code (lf *file, table_entry *entry); |
c906108c SS |
119 | |
120 | ||
121 | /* Debugging */ | |
122 | ||
123 | extern void dump_line_ref | |
4e0bf4c4 | 124 | (lf *file, char *prefix, const line_ref *line, char *suffix); |
c906108c SS |
125 | |
126 | extern void dump_table_entry | |
4e0bf4c4 | 127 | (lf *file, char *prefix, const table_entry *entry, char *suffix); |
c906108c SS |
128 | |
129 | ||
130 | ||
131 | /* Utilities for skipping around text */ | |
132 | ||
4e0bf4c4 | 133 | extern char *skip_digits (char *chp); |
c906108c | 134 | |
4e0bf4c4 | 135 | extern char *skip_spaces (char *chp); |
c906108c | 136 | |
4e0bf4c4 | 137 | extern char *skip_to_separator (char *chp, char *separators); |
c906108c | 138 | |
4e0bf4c4 | 139 | extern char *back_spaces (char *start, char *chp); |