%option prefix="code_" outfile="lex.yy.c"
%{
+#include <config.h>
+#include "system.h"
+
/* Work around a bug in flex 2.5.31. See Debian bug 333231
<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>. */
#undef code_wrap
#define code_wrap() 1
#define FLEX_PREFIX(Id) code_ ## Id
+#include "complain.h"
#include "flex-scanner.h"
#include "reader.h"
#include "getargs.h"
/* The current calling start condition: SC_RULE_ACTION or
SC_SYMBOL_ACTION. */
-# define YY_DECL const char *code_lex (int sc_context)
+# define YY_DECL const char *code_lex (int sc_context, symbol_list *rule)
YY_DECL;
#define YY_USER_ACTION location_compute (loc, &loc->end, yytext, yyleng);
-static void handle_action_dollar (char *cp, location loc);
-static void handle_action_at (char *cp, location loc);
+static void handle_action_dollar (symbol_list *rule, char *cp,
+ location dollar_loc);
+static void handle_action_at (symbol_list *rule, char *cp, location at_loc);
static location the_location;
static location *loc = &the_location;
-
-/* The rule being processed. */
-symbol_list *current_rule;
%}
/* C and C++ comments in code. */
%x SC_COMMENT SC_LINE_COMMENT
<SC_RULE_ACTION>
{
- "$"("<"{tag}">")?(-?[0-9]+|"$") handle_action_dollar (yytext, *loc);
- "@"(-?[0-9]+|"$") handle_action_at (yytext, *loc);
+ "$"("<"{tag}">")?(-?[0-9]+|"$") handle_action_dollar (rule, yytext, *loc);
+ "@"(-?[0-9]+|"$") handle_action_at (rule, yytext, *loc);
"$" {
warn_at (*loc, _("stray `$'"));
`------------------------------------------------------------------*/
static void
-handle_action_dollar (char *text, location loc)
+handle_action_dollar (symbol_list *rule, char *text, location dollar_loc)
{
const char *type_name = NULL;
char *cp = text + 1;
- int rule_length = symbol_list_length (current_rule->next);
+ symbol_list *effective_rule;
+ int effective_rule_length;
+
+ if (rule->midrule_parent_rule)
+ {
+ effective_rule = rule->midrule_parent_rule;
+ effective_rule_length = rule->midrule_parent_rhs_index - 1;
+ }
+ else
+ {
+ effective_rule = rule;
+ effective_rule_length = symbol_list_length (rule->next);
+ }
/* Get the type name if explicit. */
if (*cp == '<')
if (*cp == '$')
{
if (!type_name)
- type_name = symbol_list_n_type_name_get (current_rule, loc, 0);
+ type_name = symbol_list_n_type_name_get (rule, dollar_loc, 0);
if (!type_name && typed)
- complain_at (loc, _("$$ of `%s' has no declared type"),
- current_rule->sym->tag);
+ {
+ if (rule->midrule_parent_rule)
+ complain_at (dollar_loc,
+ _("$$ for the midrule at $%d of `%s' has no declared"
+ " type"),
+ rule->midrule_parent_rhs_index,
+ effective_rule->sym->tag);
+ else
+ complain_at (dollar_loc, _("$$ of `%s' has no declared type"),
+ rule->sym->tag);
+ }
if (!type_name)
type_name = "";
obstack_fgrow1 (&obstack_for_string,
"]b4_lhs_value([%s])[", type_name);
- current_rule->used = true;
+ rule->used = true;
}
else
{
long int num;
set_errno (0);
num = strtol (cp, 0, 10);
- if (INT_MIN <= num && num <= rule_length && ! get_errno ())
+ if (INT_MIN <= num && num <= effective_rule_length && ! get_errno ())
{
int n = num;
if (1-n > max_left_semantic_context)
max_left_semantic_context = 1-n;
if (!type_name && n > 0)
- type_name = symbol_list_n_type_name_get (current_rule, loc, n);
+ type_name =
+ symbol_list_n_type_name_get (effective_rule, dollar_loc, n);
if (!type_name && typed)
- complain_at (loc, _("$%d of `%s' has no declared type"),
- n, current_rule->sym->tag);
+ complain_at (dollar_loc, _("$%d of `%s' has no declared type"),
+ n, effective_rule->sym->tag);
if (!type_name)
type_name = "";
obstack_fgrow3 (&obstack_for_string,
"]b4_rhs_value(%d, %d, [%s])[",
- rule_length, n, type_name);
- symbol_list_n_used_set (current_rule, n, true);
+ effective_rule_length, n, type_name);
+ symbol_list_n_used_set (effective_rule, n, true);
}
else
- complain_at (loc, _("integer out of range: %s"), quote (text));
+ complain_at (dollar_loc, _("integer out of range: %s"), quote (text));
}
}
`------------------------------------------------------*/
static void
-handle_action_at (char *text, location loc)
+handle_action_at (symbol_list *rule, char *text, location at_loc)
{
char *cp = text + 1;
- int rule_length = symbol_list_length (current_rule->next);
locations_flag = true;
+ int effective_rule_length;
+
+ if (rule->midrule_parent_rule)
+ effective_rule_length = rule->midrule_parent_rhs_index - 1;
+ else
+ effective_rule_length = symbol_list_length (rule->next);
if (*cp == '$')
obstack_sgrow (&obstack_for_string, "]b4_lhs_location[");
set_errno (0);
num = strtol (cp, 0, 10);
- if (INT_MIN <= num && num <= rule_length && ! get_errno ())
+ if (INT_MIN <= num && num <= effective_rule_length && ! get_errno ())
{
int n = num;
obstack_fgrow2 (&obstack_for_string, "]b4_rhs_location(%d, %d)[",
- rule_length, n);
+ effective_rule_length, n);
}
else
- complain_at (loc, _("integer out of range: %s"), quote (text));
+ complain_at (at_loc, _("integer out of range: %s"), quote (text));
}
}
INITIAL), the processing is different. */
static const char *
-translate_action (int sc_context, const char *a, location l)
+translate_action (int sc_context, symbol_list *rule, const char *a, location l)
{
const char *res;
static bool initialized = false;
loc->start = loc->end = l.start;
yy_switch_to_buffer (yy_scan_string (a));
- res = code_lex (sc_context);
+ res = code_lex (sc_context, rule);
yy_delete_buffer (YY_CURRENT_BUFFER);
return res;
}
const char *
-translate_rule_action (symbol_list *r, const char *a, location l)
+translate_rule_action (symbol_list *rule)
{
- current_rule = r;
- return translate_action (SC_RULE_ACTION, a, l);
+ return translate_action (SC_RULE_ACTION, rule, rule->action,
+ rule->action_location);
}
const char *
translate_symbol_action (const char *a, location l)
{
- return translate_action (SC_SYMBOL_ACTION, a, l);
+ return translate_action (SC_SYMBOL_ACTION, NULL, a, l);
}
const char *
translate_code (const char *a, location l)
{
- return translate_action (INITIAL, a, l);
+ return translate_action (INITIAL, NULL, a, l);
}
/*-----------------------------------------------.
projects / bison.git / blobdiff