+ if (result)
+ return result->value;
+ return 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)
+ {
+ aver (result->value == result->storage);
+ return result->storage;
+ }
+ return NULL;
+}
+
+
+void
+muscle_boundary_grow (char const *key, boundary bound)
+{
+ char *extension;
+ MUSCLE_OBSTACK_SGROW (&muscle_obstack, bound.file);
+ obstack_1grow (&muscle_obstack, ':');
+ obstack_fgrow1 (&muscle_obstack, "%d", bound.line);
+ obstack_1grow (&muscle_obstack, '.');
+ obstack_fgrow1 (&muscle_obstack, "%d", bound.column);
+ obstack_1grow (&muscle_obstack, '\0');
+ extension = obstack_finish (&muscle_obstack);
+ muscle_grow (key, extension, "");
+ obstack_free (&muscle_obstack, extension);
+}
+
+void
+muscle_location_grow (char const *key, location loc)
+{
+ muscle_grow (key, "[[", "");
+ muscle_boundary_grow (key, loc.start);
+ muscle_grow (key, "]], [[", "");
+ muscle_boundary_grow (key, loc.end);
+ muscle_grow (key, "]]", "");
+}
+
+#define MUSCLE_COMMON_DECODE(Value) \
+ case '$': \
+ aver (*++(Value) == ']'); \
+ aver (*++(Value) == '['); \
+ obstack_sgrow (&muscle_obstack, "$"); \
+ break; \
+ case '@': \
+ switch (*++(Value)) \
+ { \
+ case '@': obstack_sgrow (&muscle_obstack, "@" ); break; \
+ case '{': obstack_sgrow (&muscle_obstack, "[" ); break; \
+ case '}': obstack_sgrow (&muscle_obstack, "]" ); break; \
+ default: aver (false); break; \
+ } \
+ break; \
+ default: \
+ obstack_1grow (&muscle_obstack, *(Value)); \
+ break;
+
+/* Reverse of MUSCLE_OBSTACK_SGROW. */
+static char *
+muscle_string_decode (char const *key)
+{
+ char const *value;
+ char *value_decoded;
+ char *result;
+
+ value = muscle_find_const (key);
+ if (!value)
+ return NULL;
+ do {
+ switch (*value)
+ {
+ MUSCLE_COMMON_DECODE (value)
+ case '[':
+ case ']':
+ aver (false);
+ break;
+ }
+ } while (*value++);
+ value_decoded = obstack_finish (&muscle_obstack);
+ result = xstrdup (value_decoded);
+ obstack_free (&muscle_obstack, value_decoded);
+ return result;
+}
+
+/* Reverse of muscle_location_grow. */
+static location
+muscle_location_decode (char const *key)
+{
+ location loc;
+ char const *value = muscle_find_const (key);
+ aver (value);
+ aver (*value == '[');
+ aver (*++value == '[');
+ while (*++value)
+ switch (*value)
+ {
+ MUSCLE_COMMON_DECODE (value)
+ case '[':
+ aver (false);
+ break;
+ case ']':
+ {
+ char *boundary_str;
+ aver (*++value == ']');
+ obstack_1grow (&muscle_obstack, '\0');
+ boundary_str = obstack_finish (&muscle_obstack);
+ switch (*++value)
+ {
+ case ',':
+ boundary_set_from_string (&loc.start, boundary_str);
+ obstack_free (&muscle_obstack, boundary_str);
+ aver (*++value == ' ');
+ aver (*++value == '[');
+ aver (*++value == '[');
+ break;
+ case '\0':
+ boundary_set_from_string (&loc.end, boundary_str);
+ obstack_free (&muscle_obstack, boundary_str);
+ return loc;
+ break;
+ default:
+ aver (false);
+ break;
+ }
+ }
+ break;
+ }
+ aver (false);
+ return loc;
+}
+
+void
+muscle_user_name_list_grow (char const *key, char const *user_name,
+ location loc)
+{
+ muscle_grow (key, "[[[[", ",");
+ muscle_grow (key, user_name, "");
+ muscle_grow (key, "]], ", "");
+ muscle_location_grow (key, loc);
+ muscle_grow (key, "]]", "");
+}
+
+#define MUSCLE_USER_NAME_CONVERT(NAME, PREFIX, USER_NAME, SUFFIX) \
+do { \
+ char *tmp; \
+ size_t length = strlen ((USER_NAME)); \
+ tmp = xmalloc (sizeof (PREFIX) - 1 + length + sizeof (SUFFIX)); \
+ strcpy (tmp, (PREFIX)); \
+ strcpy (tmp + sizeof (PREFIX) - 1, (USER_NAME)); \
+ strcpy (tmp + sizeof (PREFIX) - 1 + length, (SUFFIX)); \
+ (NAME) = uniqstr_new (tmp); \
+ free (tmp); \
+} while (0)
+
+void
+muscle_percent_define_insert (char const *variable, location variable_loc,
+ char const *value)
+{
+ char const *name;
+ char const *loc_name;
+ char const *syncline_name;
+
+ MUSCLE_USER_NAME_CONVERT (name, "percent_define(", variable, ")");
+ MUSCLE_USER_NAME_CONVERT (loc_name, "percent_define_loc(", variable, ")");
+ MUSCLE_USER_NAME_CONVERT (syncline_name,
+ "percent_define_syncline(", variable, ")");
+
+ if (muscle_find_const (name))
+ {
+ warn_at (variable_loc, _("%s `%s' redefined"),
+ "%define variable", variable);
+ warn_at (muscle_percent_define_get_loc (variable),
+ _("previous definition"));
+ }
+ MUSCLE_INSERT_STRING (name, value);
+
+ muscle_insert (loc_name, "");
+ muscle_location_grow (loc_name, variable_loc);
+ muscle_insert (syncline_name, "");
+ muscle_syncline_grow (syncline_name, variable_loc);
+ muscle_user_name_list_grow ("percent_define_user_variables", variable,
+ variable_loc);
+}
+
+char *
+muscle_percent_define_get (char const *variable)
+{
+ char const *name;
+ char const *usage_name;
+ char *value;
+
+ MUSCLE_USER_NAME_CONVERT (name, "percent_define(", variable, ")");
+ MUSCLE_USER_NAME_CONVERT (usage_name, "percent_define_bison_variables(",
+ variable, ")");
+
+ muscle_insert (usage_name, "");
+ value = muscle_string_decode (name);
+ if (!value)
+ value = xstrdup ("");
+ return value;
+}
+
+location
+muscle_percent_define_get_loc (char const *variable)
+{
+ char const *loc_name;
+ MUSCLE_USER_NAME_CONVERT (loc_name, "percent_define_loc(", variable, ")");
+ if (!muscle_find_const (loc_name))
+ fatal(_("undefined %%define variable `%s' passed to muscle_percent_define_get_loc"),
+ variable);
+ return muscle_location_decode (loc_name);
+}
+
+char const *
+muscle_percent_define_get_syncline (char const *variable)
+{
+ char const *syncline_name;
+ char const *syncline;
+ MUSCLE_USER_NAME_CONVERT (syncline_name,
+ "percent_define_syncline(", variable, ")");
+ syncline = muscle_find_const (syncline_name);
+ if (!syncline)
+ fatal(_("undefined %%define variable `%s' passed to muscle_percent_define_get_syncline"),
+ variable);
+ return syncline;
+}
+
+bool
+muscle_percent_define_ifdef (char const *variable)
+{
+ char const *name;
+ char const *usage_name;
+ char const *value;
+
+ MUSCLE_USER_NAME_CONVERT (name, "percent_define(", variable, ")");
+ MUSCLE_USER_NAME_CONVERT (usage_name, "percent_define_bison_variables(",
+ variable, ")");
+
+ value = muscle_find_const (name);
+ if (value)
+ {
+ muscle_insert (usage_name, "");
+ return true;
+ }
+
+ return false;
+}
+
+bool
+muscle_percent_define_flag_if (char const *variable)
+{
+ char const *invalid_boolean_name;
+ bool result = false;
+
+ MUSCLE_USER_NAME_CONVERT (invalid_boolean_name,
+ "percent_define_invalid_boolean(", variable, ")");
+
+ if (muscle_percent_define_ifdef (variable))
+ {
+ char *value = muscle_percent_define_get (variable);
+ if (value[0] == '\0' || 0 == strcmp (value, "true"))
+ result = true;
+ else if (0 == strcmp (value, "false"))
+ result = false;
+ else if (!muscle_find_const (invalid_boolean_name))
+ {
+ muscle_insert (invalid_boolean_name, "");
+ complain_at(muscle_percent_define_get_loc (variable),
+ _("invalid value for %%define Boolean variable `%s'"),
+ variable);
+ }
+ free (value);
+ }
+ else
+ fatal(_("undefined %%define variable `%s' passed to muscle_percent_define_flag_if"),
+ variable);
+
+ return result;
+}
+
+void
+muscle_percent_define_default (char const *variable, char const *value)
+{
+ char const *name;
+ char const *loc_name;
+ char const *syncline_name;
+ MUSCLE_USER_NAME_CONVERT (name, "percent_define(", variable, ")");
+ MUSCLE_USER_NAME_CONVERT (loc_name, "percent_define_loc(", variable, ")");
+ MUSCLE_USER_NAME_CONVERT (syncline_name,
+ "percent_define_syncline(", variable, ")");
+ if (!muscle_find_const (name))
+ {
+ location loc;
+ MUSCLE_INSERT_STRING (name, value);
+ loc.start.file = loc.end.file = "[Bison:muscle_percent_define_default]";
+ loc.start.line = loc.end.line = 1;
+ loc.start.column = loc.end.column = 0;
+ muscle_insert (loc_name, "");
+ muscle_location_grow (loc_name, loc);
+ muscle_insert (syncline_name, "");
+ muscle_syncline_grow (syncline_name, loc);
+ }
+}
+
+void
+muscle_percent_define_check_values (char const * const *values)
+{
+ for (; *values; ++values)
+ {
+ char const *variable = *values;
+ char const *name;
+ char *value;
+
+ MUSCLE_USER_NAME_CONVERT (name, "percent_define(", variable, ")");
+
+ value = muscle_string_decode (name);
+ if (value)
+ {
+ bool valid = false;
+ for (++values; *values; ++values)
+ {
+ if (0 == strcmp (value, *values))
+ {
+ valid = true;
+ while (*values)
+ ++values;
+ break;
+ }
+ }
+ if (!valid)
+ complain_at(muscle_percent_define_get_loc (variable),
+ _("invalid value for %%define variable `%s': `%s'"),
+ variable, value);
+ free (value);
+ }
+ else
+ fatal(_("undefined %%define variable `%s' passed to muscle_percent_define_check_values"),
+ variable);
+ }
+}
+
+void
+muscle_percent_code_grow (char const *qualifier, location qualifier_loc,
+ char const *code, location code_loc)
+{
+ char const *name;
+ MUSCLE_USER_NAME_CONVERT (name, "percent_code(", qualifier, ")");
+ muscle_code_grow (name, code, code_loc);
+ muscle_user_name_list_grow ("percent_code_user_qualifiers", qualifier,
+ qualifier_loc);
projects / bison.git / blobdiff