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feaee4bd AC |
1 | /* The IGEN simulator generator for GDB, the GNU Debugger. |
2 | ||
3 | Copyright 2002 Free Software Foundation, Inc. | |
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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | ||
25 | /* Read a table, line by line, from a file. | |
26 | ||
27 | A table line has several forms: | |
28 | ||
29 | Field line: | |
30 | ||
31 | <text> { ":" <text> } | |
32 | type == table_colon_entry | |
33 | ||
34 | Fields points to a NULL terminated list of pointers. | |
35 | ||
36 | Tab indented block: | |
37 | ||
38 | <tab> <text> <nl> { <tab> <text> <nl> } | |
39 | type == table_code_entry | |
40 | ||
41 | The leading tab at the start of each line is discarded. | |
42 | fields[i] is the i'th line with the <nl> discarded. | |
43 | ||
44 | ||
45 | Code block: | |
46 | ||
47 | "{" <ignore-text> <nl> { <text> <nl> } "}" <ignore-text> <nl> | |
48 | type == table_code_entry | |
49 | ||
50 | The leading/trailing {/} lines are discarded. | |
51 | Lines containing two leading spaces have those spaces striped. | |
52 | fields[i] is the i'th line with the <nl> discarded. | |
53 | ||
54 | In addition, the table parser reconises and handles internally the | |
55 | following (when not in a code block): | |
56 | ||
57 | "#" <line-nr> '"' <file> '"' | |
58 | ||
59 | As per CPP/CC, treat following lines as if they were taken from | |
60 | <file> starting at <line-nr> | |
61 | ||
62 | No support for CPP's "#if/#else/#endif" style conditions are | |
63 | planned. */ | |
64 | ||
65 | typedef struct _table table; | |
66 | ||
67 | typedef enum { | |
68 | table_colon_entry, | |
69 | table_code_entry, | |
70 | } table_entry_type; | |
71 | ||
72 | ||
73 | typedef struct _table_entry table_entry; | |
74 | struct _table_entry { | |
75 | table *file; | |
76 | line_ref *line; | |
77 | table_entry_type type; | |
78 | int nr_fields; | |
79 | char **field; | |
80 | }; | |
81 | ||
82 | /* List of directories to search when opening a pushed file. Current | |
83 | directory is always searched first */ | |
84 | typedef struct _table_include table_include; | |
85 | struct _table_include { | |
86 | char *dir; | |
87 | table_include *next; | |
88 | }; | |
89 | ||
90 | ||
91 | /* Open/read a table file. Since the file is read once during open | |
92 | (and then closed immediatly) there is no close method. */ | |
93 | ||
94 | extern table *table_open | |
95 | (const char *file_name); | |
96 | ||
97 | extern table_entry *table_read | |
98 | (table *file); | |
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 | |
105 | (table *file, | |
106 | line_ref *line, | |
107 | table_include *search, | |
108 | const char *file_name); | |
109 | ||
110 | ||
111 | /* Expand the specified field_nr using the internal expansion table. | |
112 | A field is only expanded when explicitly specified. */ | |
113 | ||
114 | extern void table_expand_field | |
115 | (table_entry *entry, | |
116 | int field_nr); | |
117 | ||
118 | ||
119 | /* Given a code entry, write the code to FILE. Since any | |
120 | leading/trailing braces were striped as part of the read, they are | |
121 | not written. */ | |
122 | ||
123 | extern void table_print_code | |
124 | (lf *file, | |
125 | table_entry *entry); | |
126 | ||
127 | ||
128 | /* Debugging */ | |
129 | ||
130 | extern void dump_line_ref | |
131 | (lf *file, | |
132 | char *prefix, | |
133 | const line_ref *line, | |
134 | char *suffix); | |
135 | ||
136 | extern void dump_table_entry | |
137 | (lf *file, | |
138 | char *prefix, | |
139 | const table_entry *entry, | |
140 | char *suffix); | |
141 | ||
142 | ||
143 | ||
144 | /* Utilities for skipping around text */ | |
145 | ||
146 | extern char *skip_digits | |
147 | (char *chp); | |
148 | ||
149 | extern char *skip_spaces | |
150 | (char *chp); | |
151 | ||
152 | extern char *skip_to_separator | |
153 | (char *chp, | |
154 | char *separators); | |
155 | ||
156 | extern char *back_spaces | |
157 | (char *start, | |
158 | char *chp); |