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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
commitc906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch)
treea0015aa5cedc19ccbab307251353a41722a3ae13 /sim/igen/table.h
parentcd946cff9ede3f30935803403f06f6ed30cad136 (diff)
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Initial creation of sourceware repositorygdb-4_18-branchpoint
Diffstat (limited to 'sim/igen/table.h')
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+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ */
+
+
+/* Read a table, line by line, from a file.
+
+ A table line has several forms:
+
+ Field line:
+
+ <text> { ":" <text> }
+ type == table_colon_entry
+
+ Fields points to a NULL terminated list of pointers.
+
+ Tab indented block:
+
+ <tab> <text> <nl> { <tab> <text> <nl> }
+ type == table_code_entry
+
+ The leading tab at the start of each line is discarded.
+ fields[i] is the i'th line with the <nl> discarded.
+
+
+ Code block:
+
+ "{" <ignore-text> <nl> { <text> <nl> } "}" <ignore-text> <nl>
+ type == table_code_entry
+
+ The leading/trailing {/} lines are discarded.
+ Lines containing two leading spaces have those spaces striped.
+ fields[i] is the i'th line with the <nl> discarded.
+
+ In addition, the table parser reconises and handles internally the
+ following (when not in a code block):
+
+ "#" <line-nr> '"' <file> '"'
+
+ As per CPP/CC, treat following lines as if they were taken from
+ <file> starting at <line-nr>
+
+ No support for CPP's "#if/#else/#endif" style conditions are
+ planned. */
+
+typedef struct _table table;
+
+typedef enum {
+ table_colon_entry,
+ table_code_entry,
+} table_entry_type;
+
+
+typedef struct _table_entry table_entry;
+struct _table_entry {
+ table *file;
+ line_ref *line;
+ table_entry_type type;
+ int nr_fields;
+ char **field;
+};
+
+/* List of directories to search when opening a pushed file. Current
+ directory is always searched first */
+typedef struct _table_include table_include;
+struct _table_include {
+ char *dir;
+ table_include *next;
+};
+
+
+/* Open/read a table file. Since the file is read once during open
+ (and then closed immediatly) there is no close method. */
+
+extern table *table_open
+(const char *file_name);
+
+extern table_entry *table_read
+(table *file);
+
+
+/* Push the the state of the current file and open FILE_NAME. When
+ the end of FILE_NAME is reached, return to the pushed file */
+
+extern void table_push
+(table *file,
+ line_ref *line,
+ table_include *search,
+ const char *file_name);
+
+
+/* Expand the specified field_nr using the internal expansion table.
+ A field is only expanded when explicitly specified. */
+
+extern void table_expand_field
+(table_entry *entry,
+ int field_nr);
+
+
+/* Given a code entry, write the code to FILE. Since any
+ leading/trailing braces were striped as part of the read, they are
+ not written. */
+
+extern void table_print_code
+(lf *file,
+ table_entry *entry);
+
+
+/* Debugging */
+
+extern void dump_line_ref
+(lf *file,
+ char *prefix,
+ const line_ref *line,
+ char *suffix);
+
+extern void dump_table_entry
+(lf *file,
+ char *prefix,
+ const table_entry *entry,
+ char *suffix);
+
+
+
+/* Utilities for skipping around text */
+
+extern char *skip_digits
+(char *chp);
+
+extern char *skip_spaces
+(char *chp);
+
+extern char *skip_to_separator
+(char *chp,
+ char *separators);
+
+extern char *back_spaces
+(char *start,
+ char *chp);