#include "system.h"
+#include "quotearg.h"
#include "hash.h"
#include "complain.h"
#include "symtab.h"
symbol_t *eoftoken = NULL;
symbol_t *axiom = NULL;
symbol_t *startsymbol = NULL;
+location_t startsymbol_location;
/*---------------------------------.
| Create a new symbol, named TAG. |
`---------------------------------*/
static symbol_t *
-symbol_new (const char *tag)
+symbol_new (const char *tag, location_t location)
{
symbol_t *res = XMALLOC (symbol_t, 1);
res->tag = xstrdup (tag);
+ res->location = location;
+
res->type_name = NULL;
+ res->destructor = NULL;
+
res->number = NUMBER_UNDEFINED;
res->prec = 0;
res->assoc = right_assoc;
res->class = unknown_sym;
nsyms++;
-
return res;
}
+/*-----------------------------------------------------------------.
+| Return the tag of this SYMBOL in a printable form. Warning: use |
+| the first QUOTEARG slot: 0. |
+`-----------------------------------------------------------------*/
+
+const char *
+symbol_tag_get (symbol_t *symbol)
+{
+ return quotearg_style (escape_quoting_style, symbol->tag);
+}
+
+
+/*------------------------------------------------------------.
+| Return the tag of this SYMBOL in a printable form. Use the |
+| QUOTEARG slot number N. |
+`------------------------------------------------------------*/
+
+const char *
+symbol_tag_get_n (symbol_t *symbol, int n)
+{
+ return quotearg_n_style (n, escape_quoting_style, symbol->tag);
+}
+
+
+/*-------------------------------.
+| Print the tag of this SYMBOL. |
+`-------------------------------*/
+
+void
+symbol_tag_print (symbol_t *symbol, FILE *out)
+{
+ fputs (symbol_tag_get (symbol), out);
+}
+
+
+/*------------------------------------------------------------------.
+| Set the TYPE_NAME associated to SYMBOL. Does nothing if passed 0 |
+| as TYPE_NAME. |
+`------------------------------------------------------------------*/
+
+void
+symbol_type_set (symbol_t *symbol, char *type_name, location_t location)
+{
+ if (type_name)
+ {
+ if (symbol->type_name)
+ complain_at (location,
+ _("type redeclaration for %s"), symbol_tag_get (symbol));
+ symbol->type_name = type_name;
+ }
+}
+
+
+/*-------------------------------------------------------------------.
+| Set the DESTRUCTOR associated to SYMBOL. Do nothing if passed 0. |
+`-------------------------------------------------------------------*/
+
+void
+symbol_destructor_set (symbol_t *symbol, char *destructor, location_t location)
+{
+ if (destructor)
+ {
+ if (symbol->destructor)
+ complain_at (location,
+ _("%s redeclaration for %s"),
+ "%destructor", symbol_tag_get (symbol));
+ symbol->destructor = destructor;
+ symbol->destructor_location = location;
+ }
+}
+
+
+/*----------------------------------------------------------------.
+| Set the PRITNER associated to SYMBOL. Do nothing if passed 0. |
+`----------------------------------------------------------------*/
+
+void
+symbol_printer_set (symbol_t *symbol, char *printer, location_t location)
+{
+ if (printer)
+ {
+ if (symbol->printer)
+ complain_at (location,
+ _("%s redeclaration for %s"),
+ "%printer", symbol_tag_get (symbol));
+ symbol->printer = printer;
+ symbol->printer_location = location;
+ }
+}
+
+
+/*------------------------------------------------------------------.
+| Set the PRECEDENCE associated to SYMBOL. Does nothing if invoked |
+| with UNDEF_ASSOC as ASSOC. |
+`------------------------------------------------------------------*/
+
+void
+symbol_precedence_set (symbol_t *symbol,
+ int prec, associativity assoc, location_t location)
+{
+ if (assoc != undef_assoc)
+ {
+ if (symbol->prec != 0)
+ complain_at (location,
+ _("redefining precedence of %s"),
+ symbol_tag_get (symbol));
+ symbol->prec = prec;
+ symbol->assoc = assoc;
+ }
+
+ /* Only terminals have a precedence. */
+ symbol_class_set (symbol, token_sym, location);
+}
+
+
+/*-------------------------------------.
+| Set the CLASS associated to SYMBOL. |
+`-------------------------------------*/
+
+void
+symbol_class_set (symbol_t *symbol, symbol_class class, location_t location)
+{
+ if (symbol->class != unknown_sym && symbol->class != class)
+ complain_at (location, _("symbol %s redefined"), symbol_tag_get (symbol));
+
+ if (class == nterm_sym && symbol->class != nterm_sym)
+ symbol->number = nvars++;
+ else if (class == token_sym && symbol->number == NUMBER_UNDEFINED)
+ symbol->number = ntokens++;
+
+ symbol->class = class;
+}
+
+
+/*-------------------------------------------------.
+| Set the USER_TOKEN_NUMBER associated to SYMBOL. |
+`-------------------------------------------------*/
+
+void
+symbol_user_token_number_set (symbol_t *symbol,
+ int user_token_number, location_t location)
+{
+ assert (symbol->class == token_sym);
+
+ if (symbol->user_token_number != USER_NUMBER_UNDEFINED
+ && symbol->user_token_number != user_token_number)
+ complain_at (location, _("redefining user token number of %s"),
+ symbol_tag_get (symbol));
+
+ symbol->user_token_number = user_token_number;
+ /* User defined EOF token? */
+ if (user_token_number == 0)
+ {
+ eoftoken = symbol;
+ eoftoken->number = 0;
+ /* It is always mapped to 0, so it was already counted in
+ NTOKENS. */
+ --ntokens;
+ }
+}
+
+
/*------------.
| Free THIS. |
`------------*/
{
if (this->class == unknown_sym)
{
- complain
- (_("symbol %s is used, but is not defined as a token and has no rules"),
- this->tag);
+ complain_at
+ (this->location,
+ _("symbol %s is used, but is not defined as a token and has no rules"),
+ symbol_tag_get (this));
this->class = nterm_sym;
this->number = nvars++;
}
`-------------------------------------------------------------------*/
void
-symbol_make_alias (symbol_t *symbol, symbol_t *symval, char *typename)
+symbol_make_alias (symbol_t *symbol, symbol_t *symval)
{
if (symval->alias)
warn (_("symbol `%s' used more than once as a literal string"),
- symval->tag);
+ symbol_tag_get (symval));
else if (symbol->alias)
warn (_("symbol `%s' given more than one literal string"),
- symbol->tag);
+ symbol_tag_get (symbol));
else
{
symval->class = token_sym;
- symval->type_name = typename;
symval->user_token_number = symbol->user_token_number;
symbol->user_token_number = USER_NUMBER_ALIAS;
symval->alias = symbol;
{
if (this->prec != 0 && this->alias->prec != 0)
complain (_("conflicting precedences for %s and %s"),
- this->tag, this->alias->tag);
+ symbol_tag_get (this), symbol_tag_get (this->alias));
if (this->prec != 0)
this->alias->prec = this->prec;
else
if (this->assoc != this->alias->assoc)
{
- if (this->assoc != 0 && this->alias->assoc != 0)
- complain (_("conflicting assoc values for %s and %s"),
- this->tag, this->alias->tag);
+ /* FIXME: For some reason (probably the S/R => keep the S),
+ the right assoc is chosen has the ``not set''. This is
+ not nice, fix this! */
+ if (this->assoc != right_assoc
+ && this->alias->assoc != right_assoc)
+ complain (_("conflicting associativities for %s and %s"),
+ symbol_tag_get (this), symbol_tag_get (this->alias));
if (this->assoc != 0)
this->alias->assoc = this->assoc;
else
/* A token which translation has already been set? */
if (token_translations[this->user_token_number] != undeftoken->number)
complain (_("tokens %s and %s both assigned number %d"),
- symbols[token_translations[this->user_token_number]]->tag,
- this->tag, this->user_token_number);
+ symbol_tag_get (symbols[token_translations[this->user_token_number]]),
+ symbol_tag_get (this), this->user_token_number);
token_translations[this->user_token_number] = this->number;
}
`----------------------------------------------------------------*/
symbol_t *
-getsym (const char *key)
+getsym (const char *key, location_t location)
{
symbol_t probe;
symbol_t *entry;
if (!entry)
{
/* First insertion in the hash. */
- entry = symbol_new (key);
+ entry = symbol_new (key, location);
hash_insert (symbol_table, entry);
}
return entry;
symbols_token_translations_init ();
if (startsymbol->class == unknown_sym)
- fatal (_("the start symbol %s is undefined"), startsymbol->tag);
+ fatal_at (startsymbol_location,
+ _("the start symbol %s is undefined"),
+ symbol_tag_get (startsymbol));
else if (startsymbol->class == token_sym)
- fatal (_("the start symbol %s is a token"), startsymbol->tag);
+ fatal_at (startsymbol_location,
+ _("the start symbol %s is a token"),
+ symbol_tag_get (startsymbol));
}
projects / bison.git / blobdiff