| 1 | /* The IGEN simulator generator for GDB, the GNU Debugger. |
| 2 | |
| 3 | Copyright 2002, 2007, 2008, 2009 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 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 | |
| 65 | typedef enum |
| 66 | { |
| 67 | table_colon_entry, |
| 68 | table_code_entry, |
| 69 | } |
| 70 | table_entry_type; |
| 71 | |
| 72 | |
| 73 | typedef struct _table_entry table_entry; |
| 74 | struct _table_entry |
| 75 | { |
| 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; |
| 86 | struct _table_include |
| 87 | { |
| 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 | |
| 96 | extern table *table_open (const char *file_name); |
| 97 | |
| 98 | extern table_entry *table_read (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, line_ref *line, table_include *search, const char *file_name); |
| 106 | |
| 107 | |
| 108 | /* Expand the specified field_nr using the internal expansion table. |
| 109 | A field is only expanded when explicitly specified. */ |
| 110 | |
| 111 | extern void table_expand_field (table_entry *entry, int field_nr); |
| 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 | |
| 118 | extern void table_print_code (lf *file, table_entry *entry); |
| 119 | |
| 120 | |
| 121 | /* Debugging */ |
| 122 | |
| 123 | extern void dump_line_ref |
| 124 | (lf *file, char *prefix, const line_ref *line, char *suffix); |
| 125 | |
| 126 | extern void dump_table_entry |
| 127 | (lf *file, char *prefix, const table_entry *entry, char *suffix); |
| 128 | |
| 129 | |
| 130 | |
| 131 | /* Utilities for skipping around text */ |
| 132 | |
| 133 | extern char *skip_digits (char *chp); |
| 134 | |
| 135 | extern char *skip_spaces (char *chp); |
| 136 | |
| 137 | extern char *skip_to_separator (char *chp, char *separators); |
| 138 | |
| 139 | extern char *back_spaces (char *start, char *chp); |