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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [igen/] [table.h] - Blame information for rev 856

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1 227 jeremybenn
/* The IGEN simulator generator for GDB, the GNU Debugger.
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   Copyright 2002, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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   Contributed by Andrew Cagney.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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/* Read a table, line by line, from a file.
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   A table line has several forms:
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   Field line:
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       <text> { ":" <text> }
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       type == table_colon_entry
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       Fields points to a NULL terminated list of pointers.
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   Tab indented block:
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     <tab> <text> <nl> { <tab> <text> <nl> }
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     type == table_code_entry
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     The leading tab at the start of each line is discarded.
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     fields[i] is the i'th line with the <nl> discarded.
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   Code block:
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     "{" <ignore-text> <nl> { <text> <nl> } "}" <ignore-text> <nl>
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     type == table_code_entry
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     The leading/trailing {/} lines are discarded.
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     Lines containing two leading spaces have those spaces striped.
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     fields[i] is the i'th line with the <nl> discarded.
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   In addition, the table parser reconises and handles internally the
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   following (when not in a code block):
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     "#" <line-nr> '"' <file> '"'
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     As per CPP/CC, treat following lines as if they were taken from
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     <file> starting at <line-nr>
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   No support for CPP's "#if/#else/#endif" style conditions are
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   planned. */
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typedef struct _table table;
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typedef enum
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{
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  table_colon_entry,
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  table_code_entry,
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}
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table_entry_type;
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typedef struct _table_entry table_entry;
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struct _table_entry
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{
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  table *file;
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  line_ref *line;
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  table_entry_type type;
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  int nr_fields;
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  char **field;
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};
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/* List of directories to search when opening a pushed file.  Current
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   directory is always searched first */
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typedef struct _table_include table_include;
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struct _table_include
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{
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  char *dir;
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  table_include *next;
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};
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/* Open/read a table file.  Since the file is read once during open
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   (and then closed immediatly) there is no close method. */
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extern table *table_open (const char *file_name);
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extern table_entry *table_read (table *file);
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/* Push the the state of the current file and open FILE_NAME.  When
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   the end of FILE_NAME is reached, return to the pushed file */
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extern void table_push
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  (table *file, line_ref *line, table_include *search, const char *file_name);
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/* Expand the specified field_nr using the internal expansion table.
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   A field is only expanded when explicitly specified.  */
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extern void table_expand_field (table_entry *entry, int field_nr);
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/* Given a code entry, write the code to FILE.  Since any
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   leading/trailing braces were striped as part of the read, they are
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   not written. */
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extern void table_print_code (lf *file, table_entry *entry);
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/* Debugging */
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extern void dump_line_ref
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  (lf *file, char *prefix, const line_ref *line, char *suffix);
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extern void dump_table_entry
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  (lf *file, char *prefix, const table_entry *entry, char *suffix);
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/* Utilities for skipping around text */
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extern char *skip_digits (char *chp);
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extern char *skip_spaces (char *chp);
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extern char *skip_to_separator (char *chp, char *separators);
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extern char *back_spaces (char *start, char *chp);

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