/* Muscle table manager for Bison.
- Copyright (C) 2001-2012 Free Software Foundation, Inc.
+ Copyright (C) 2001-2013 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
return hash_string (m->key, tablesize);
}
-/*-----------------------------------------------------------------.
-| Create the MUSCLE_TABLE, and initialize it with default values. |
-| Also set up the MUSCLE_OBSTACK. |
-`-----------------------------------------------------------------*/
+/* Create a fresh muscle name KEY, and insert in the hash table. */
+static void *
+muscle_entry_new (char const *key)
+{
+ muscle_entry *res = xmalloc (sizeof *res);
+ res->key = key;
+ res->value = NULL;
+ res->storage = NULL;
+ if (!hash_insert (muscle_table, res))
+ xalloc_die ();
+ return res;
+}
static void
muscle_entry_free (void *entry)
}
-/*------------------------------------------------------------.
-| Free all the memory consumed by the muscle machinery only. |
-`------------------------------------------------------------*/
-
void
muscle_free (void)
{
obstack_free (&muscle_obstack, NULL);
}
+/* Look for the muscle named KEY. Return NULL if does not exist. */
+static
+muscle_entry *
+muscle_lookup (char const *key)
+{
+ muscle_entry probe;
+ probe.key = key;
+ return hash_lookup (muscle_table, &probe);
+}
-/*------------------------------------------------------------.
-| Insert (KEY, VALUE). If KEY already existed, overwrite the |
-| previous value. |
-`------------------------------------------------------------*/
-
void
muscle_insert (char const *key, char const *value)
{
- muscle_entry probe;
- muscle_entry *entry;
-
- probe.key = key;
- entry = hash_lookup (muscle_table, &probe);
-
- if (!entry)
- {
- /* First insertion in the hash. */
- entry = xmalloc (sizeof *entry);
- entry->key = key;
- if (!hash_insert (muscle_table, entry))
- xalloc_die ();
- }
- else
+ muscle_entry *entry = muscle_lookup (key);
+ if (entry)
free (entry->storage);
+ else
+ /* First insertion in the hash. */
+ entry = muscle_entry_new (key);
entry->value = value;
entry->storage = NULL;
}
void
muscle_grow (const char *key, const char *val, const char *separator)
{
- muscle_entry probe;
- muscle_entry *entry = NULL;
-
- probe.key = key;
- entry = hash_lookup (muscle_table, &probe);
+ muscle_entry *entry = muscle_lookup (key);
- if (!entry)
- {
- /* First insertion in the hash. */
- entry = xmalloc (sizeof *entry);
- entry->key = key;
- if (!hash_insert (muscle_table, entry))
- xalloc_die ();
- entry->value = entry->storage = xstrdup (val);
- }
- else
+ if (entry)
{
/* Grow the current value. */
char *new_val;
entry->value = entry->storage = xstrdup (new_val);
obstack_free (&muscle_obstack, new_val);
}
+ else
+ {
+ /* First insertion in the hash. */
+ entry = muscle_entry_new (key);
+ entry->value = entry->storage = xstrdup (val);
+ }
}
/*------------------------------------------------------------------.
}
-void muscle_pair_list_grow (const char *muscle,
- const char *a1, const char *a2)
+void
+muscle_pair_list_grow (const char *muscle,
+ const char *a1, const char *a2)
{
char *pair;
obstack_sgrow (&muscle_obstack, "[");
}
-/*----------------------------------------------------------------------------.
-| Find the value of muscle KEY. Unlike MUSCLE_FIND, this is always reliable |
-| to determine whether KEY has a value. |
-`----------------------------------------------------------------------------*/
-
char const *
muscle_find_const (char const *key)
{
- muscle_entry probe;
- muscle_entry *result = NULL;
-
- probe.key = key;
- result = hash_lookup (muscle_table, &probe);
- if (result)
- return result->value;
- return NULL;
+ muscle_entry *entry = muscle_lookup (key);
+ return entry ? entry->value : NULL;
}
-/*----------------------------------------------------------------------------.
-| Find the value of muscle KEY. Abort if muscle_insert was invoked more |
-| recently than muscle_grow for KEY since muscle_find can't return a |
-| char const *. |
-`----------------------------------------------------------------------------*/
-
char *
muscle_find (char const *key)
{
- muscle_entry probe;
- muscle_entry *result = NULL;
-
- probe.key = key;
- result = hash_lookup (muscle_table, &probe);
- if (result)
+ muscle_entry *entry = muscle_lookup (key);
+ if (entry)
{
- aver (result->value == result->storage);
- return result->storage;
+ aver (entry->value == entry->storage);
+ return entry->storage;
}
return NULL;
}
-/* In the format `file_name:line.column', append BOUND to MUSCLE. Use
+/* In the format 'file_name:line.column', append BOUND to MUSCLE. Use
digraphs for special characters in the file name. */
static void
}
-/* In the format `[[file_name:line.column]], [[file_name:line.column]]',
+/* In the format '[[file_name:line.column]], [[file_name:line.column]]',
append LOC to MUSCLE. Use digraphs for special characters in each
file name. */
muscle_grow (key, "]]", "");
}
+
+/** Return an allocated string that represents the %define directive
+ that performs the assignment.
+
+ @param assignment "VAR", or "VAR=VAL".
+ @param value default value if VAL \a assignment has no '='.
+
+ For instance:
+ "foo", NULL => "%define foo"
+ "foo", "baz" => "%define foo baz"
+ "foo=bar", NULL => "%define foo bar"
+ "foo=bar", "baz" => "%define foo bar"
+ "foo=", NULL => "%define foo"
+ "foo=", "baz" => "%define foo"
+ */
+
+static
+char *
+define_directive (char const *assignment, char const *value)
+{
+ char *eq = strchr (assignment, '=');
+ char const *fmt = !eq && value && *value ? "%%define %s %s" : "%%define %s";
+ char *res = xmalloc (strlen (fmt) + strlen (assignment)
+ + (value ? strlen (value) : 0));
+ sprintf (res, fmt, assignment, value);
+ eq = strchr (res, '=');
+ if (eq)
+ *eq = eq[1] ? ' ' : '\0';
+ return res;
+}
+
/** If the \a variable name is obsolete, return the name to use,
- * otherwise \a variable. */
+ * otherwise \a variable. If the \a value is obsolete, update it too.
+ *
+ * Allocates the returned value. */
static
-char const *
-muscle_percent_variable_update (char const *variable, location variable_loc)
+char *
+muscle_percent_variable_update (char const *variable, location variable_loc,
+ char const **value)
{
typedef struct
{
{
{ "api.push_pull", "api.push-pull", },
{ "api.tokens.prefix", "api.token.prefix", },
+ { "lex_symbol", "api.token.constructor", },
{ "location_type", "api.location.type", },
{ "lr.default-reductions", "lr.default-reduction", },
{ "lr.keep-unreachable-states", "lr.keep-unreachable-state", },
{ "lr.keep_unreachable_states", "lr.keep-unreachable-state", },
{ "namespace", "api.namespace", },
+ { "stype", "api.value.type", },
+ { "variant=", "api.value.type=variant", },
+ { "variant=true", "api.value.type=variant", },
+ { NULL, NULL, }
};
- char const *res = variable;
- int i;
- for (i = 0; i < ARRAY_CARDINALITY (conversion); ++i)
- if (STREQ (conversion[i].obsolete, variable))
- {
- res = conversion[i].updated;
- complain (&variable_loc, Wdeprecated,
- _("deprecated %%define variable name: %s, use %s"),
- quote (variable), quote_n (1, res));
- break;
- }
- return res;
+ conversion_type const *c;
+ for (c = conversion; c->obsolete; ++c)
+ {
+ char const *eq = strchr (c->obsolete, '=');
+ if (eq
+ ? (!strncmp (c->obsolete, variable, eq - c->obsolete)
+ && STREQ (eq + 1, *value))
+ : STREQ (c->obsolete, variable))
+ {
+ char *old = define_directive (c->obsolete, *value);
+ char *upd = define_directive (c->updated, *value);
+ deprecated_directive (&variable_loc, old, upd);
+ free (old);
+ free (upd);
+ char *res = xstrdup (c->updated);
+ {
+ char *eq2 = strchr (res, '=');
+ if (eq2)
+ {
+ *eq2 = '\0';
+ *value = eq2 + 1;
+ }
+ }
+ return res;
+ }
+ }
+ return xstrdup (variable);
}
void
muscle_percent_define_how how)
{
/* Backward compatibility. */
- char const *variable = muscle_percent_variable_update (var, variable_loc);
+ char *variable = muscle_percent_variable_update (var, variable_loc, &value);
char const *name = UNIQSTR_CONCAT ("percent_define(", variable, ")");
char const *loc_name = UNIQSTR_CONCAT ("percent_define_loc(", variable, ")");
char const *syncline_name =
muscle_percent_define_how how_old = atoi (muscle_find_const (how_name));
unsigned i = 0;
if (how_old == MUSCLE_PERCENT_DEFINE_F)
- return;
+ goto end;
complain_indent (&variable_loc, complaint, &i,
_("%%define variable %s redefined"),
quote (variable));
muscle_user_name_list_grow ("percent_define_user_variables", variable,
variable_loc);
MUSCLE_INSERT_INT (how_name, how);
+ end:
+ free (variable);
}
/* This is used for backward compatibility, e.g., "%define api.pure"
muscle_percent_define_ensure (char const *variable, location loc,
bool value)
{
- char const *val = value ? "" : "false";
char const *name = UNIQSTR_CONCAT ("percent_define(", variable, ")");
+ char const *val = value ? "" : "false";
- /* %pure-parser is deprecated in favor of `%define api.pure', so use
- `%define api.pure' in a backward-compatible manner here. First,
- don't complain if %pure-parser is specified multiple times. */
+ /* Don't complain is VARIABLE is already defined, but be sure to set
+ its value to VAL. */
if (!muscle_find_const (name))
muscle_percent_define_insert (variable, loc, val,
MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE);
- /* In all cases, use api.pure now so that the backend doesn't complain if
- the skeleton ignores api.pure, but do warn now if there's a previous
- conflicting definition from an actual %define. */
if (muscle_percent_define_flag_if (variable) != value)
muscle_percent_define_insert (variable, loc, val,
MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE);
quote (*variablep), quote_n (1, value));
i += SUB_INDENT;
for (values = variablep + 1; *values; ++values)
- complain_indent (&loc, complaint, &i, _("accepted value: %s"),
- quote (*values));
+ complain_indent (&loc, complaint | no_caret | silent, &i,
+ _("accepted value: %s"), quote (*values));
}
else
{
}
-/*----------------------------------------------------------------.
-| Output the definition of all the current muscles into a list of |
-| m4_defines. |
-`----------------------------------------------------------------*/
-
void
muscles_m4_output (FILE *out)
{
projects / bison.git / blobdiff