#include "libpspp/str.h"
#include "libpspp/string-array.h"
#include "libpspp/string-map.h"
+#include "libpspp/stringi-set.h"
#include "gl/c-ctype.h"
#include "gl/ftoastr.h"
ds_put_substring (s, mt->representation);
}
+bool
+is_macro_keyword (struct substring s)
+{
+ static struct stringi_set keywords = STRINGI_SET_INITIALIZER (keywords);
+ if (stringi_set_is_empty (&keywords))
+ {
+ static const char *kws[] = {
+ "BREAK",
+ "CHAREND",
+ "CMDEND",
+ "DEFAULT",
+ "DO",
+ "DOEND",
+ "ELSE",
+ "ENCLOSE",
+ "ENDDEFINE",
+ "IF",
+ "IFEND",
+ "IN",
+ "LET",
+ "NOEXPAND",
+ "OFFEXPAND",
+ "ONEXPAND",
+ "POSITIONAL",
+ "THEN",
+ "TOKENS",
+ };
+ for (size_t i = 0; i < sizeof kws / sizeof *kws; i++)
+ stringi_set_insert (&keywords, kws[i]);
+ }
+
+ ss_ltrim (&s, ss_cstr ("!"));
+ return stringi_set_contains_len (&keywords, s.string, s.length);
+}
+
void
macro_tokens_copy (struct macro_tokens *dst, const struct macro_tokens *src)
{
static const struct macro_param *
macro_find_parameter_by_name (const struct macro *m, struct substring name)
{
- if (ss_first (name) == '!')
- ss_advance (&name, 1);
+ ss_ltrim (&name, ss_cstr ("!"));
for (size_t i = 0; i < m->n_params; i++)
{
return 0;
}
const struct substring var_name = p->token.string;
+ if (is_macro_keyword (var_name)
+ || macro_find_parameter_by_name (me->macro, var_name))
+ {
+ printf ("cannot use argument name or macro keyword as !LET variable\n");
+ return 0;
+ }
p++;
if (p >= end || p->token.type != T_EQUALS)
return 0;
}
const struct substring var_name = p->token.string;
+ if (is_macro_keyword (var_name)
+ || macro_find_parameter_by_name (me->macro, var_name))
+ {
+ printf ("cannot use argument name or macro keyword as !DO variable\n");
+ return 0;
+ }
p++;
+ int miterate = settings_get_miterate ();
if (p < end && p->token.type == T_MACRO_ID
&& ss_equals_case (p->token.string, ss_cstr ("!IN")))
{
};
for (size_t i = 0; i < items.n; i++)
{
+ if (i >= miterate)
+ {
+ printf ("exceeded maximum number of iterations %d\n", miterate);
+ break;
+ }
string_map_replace_nocopy (vars, ss_xstrdup (var_name),
ss_xstrdup (items.mts[i].representation));
};
if ((by > 0 && first <= last) || (by < 0 && first >= last))
- for (double index = first;
- by > 0 ? (index <= last) : (index >= last);
- index += by)
- {
- char index_s[DBL_BUFSIZE_BOUND];
- c_dtoastr (index_s, sizeof index_s, 0, 0, index);
- string_map_replace_nocopy (vars, ss_xstrdup (var_name),
- xstrdup (index_s));
-
- bool break_ = false;
- macro_expand (&inner, nesting_countdown, macros,
- me, vars, expand, &break_, exp);
- if (break_)
- break;
- }
+ {
+ int i = 0;
+ for (double index = first;
+ by > 0 ? (index <= last) : (index >= last);
+ index += by)
+ {
+ if (i++ > miterate)
+ {
+ printf ("exceeded maximum number of iterations %d\n",
+ miterate);
+ break;
+ }
+
+ char index_s[DBL_BUFSIZE_BOUND];
+ c_dtoastr (index_s, sizeof index_s, 0, 0, index);
+ string_map_replace_nocopy (vars, ss_xstrdup (var_name),
+ xstrdup (index_s));
+
+ bool break_ = false;
+ macro_expand (&inner, nesting_countdown, macros,
+ me, vars, expand, &break_, exp);
+ if (break_)
+ break;
+ }
+ }
return do_end - tokens + 1;
}