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Diffstat (limited to 'mixlib/mix_symbol_table.h')
-rw-r--r-- | mixlib/mix_symbol_table.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/mixlib/mix_symbol_table.h b/mixlib/mix_symbol_table.h new file mode 100644 index 0000000..c54c3f8 --- /dev/null +++ b/mixlib/mix_symbol_table.h @@ -0,0 +1,109 @@ +/* -*-c-*- ---------------- mix_symbol_table.h : + * Type mix_symbol_table_t and functions to manipulate it. + * ------------------------------------------------------------------ + * Copyright (C) 2000, 2004 Free Software Foundation, Inc. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + + +#ifndef MIX_SYMBOL_TABLE_H +#define MIX_SYMBOL_TABLE_H + +#include <stdio.h> +#include "mix_types.h" + +/* A symbol table shall be implemented as a hash table */ +typedef GHashTable mix_symbol_table_t ; + +/* Maximum length of stored symbols */ +#define MIX_SYM_MAX_LEN 10 + +/* Create an empty table */ +extern mix_symbol_table_t * +mix_symbol_table_new (void); + +/* Create a table and populate it with the contents of a table stored + in -file- using mix_symbol_table_print (table, MIX_SYM_LINE, file) +*/ +extern mix_symbol_table_t * +mix_symbol_table_new_from_file (FILE *file); + + +/* Delete a table */ +extern void +mix_symbol_table_delete (mix_symbol_table_t *table); + +/* add/remove symbols from other table */ +extern gboolean +mix_symbol_table_merge_table (mix_symbol_table_t *table, + const mix_symbol_table_t *from); + +extern gboolean +mix_symbol_table_substract_table (mix_symbol_table_t *table, + const mix_symbol_table_t *other); + +/* Add/remove symbols one by one */ +/* possible outcomes: */ +enum { + MIX_SYM_FAIL, /* attempt failed */ + MIX_SYM_OK, + MIX_SYM_DUP, /* duplicated symbol */ + MIX_SYM_LONG /* symbol too long: only MIX_SYM_MAX_LEN chars used */ +}; + +extern gint +mix_symbol_table_add (mix_symbol_table_t *table, + const gchar *sym, mix_word_t value); + +#define mix_symbol_table_remove(table, sym) \ + g_hash_table_remove (table, sym) + + +/* Add or modify symbol if it exists */ +extern gint +mix_symbol_table_insert (mix_symbol_table_t *table, + const gchar *sym, mix_word_t new_value); + +/* Add or modify symbol if it exists, without copying sym */ +#define mix_symbol_table_insert_static(table,sym,value)\ + g_hash_table_insert (table,(gpointer)sym,GUINT_TO_POINTER (value)) + +/* Symbols lookup */ +extern gboolean +mix_symbol_table_is_defined (const mix_symbol_table_t *table, const gchar *sym); + +#define mix_symbol_table_value(table,sym) \ + (mix_word_t)GPOINTER_TO_UINT (g_hash_table_lookup ((GHashTable *)table, \ + (gpointer)sym)) + +/* Traverse the table */ +#define mix_symbol_table_foreach(table,func,data) \ + g_hash_table_foreach (table,func,data) + +/* Print the table */ +enum { + MIX_SYM_ROWS, /* each symbol/value in a row */ + MIX_SYM_LINE /* {,symbol =value}*; in a single row */ +}; + +extern void +mix_symbol_table_print (const mix_symbol_table_t *table, gint mode, + FILE *file, gboolean skiplocal); + + +#endif /* MIX_SYMBOL_TABLE_H */ + |