1 /* The IGEN simulator generator for GDB, the GNU Debugger. 2 3 Copyright 2002-2014 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); 140