static VALUE
string_to_c_internal(VALUE self)
{
VALUE s;
s = self;
if (RSTRING_LEN(s) == 0)
return rb_assoc_new(Qnil, self);
{
VALUE m, sr, si, re, r, i;
int po;
m = f_match(comp_pat0, s);
if (!NIL_P(m)) {
sr = rb_reg_nth_match(1, m);
si = rb_reg_nth_match(2, m);
re = rb_reg_match_post(m);
po = 1;
}
if (NIL_P(m)) {
m = f_match(comp_pat1, s);
if (!NIL_P(m)) {
sr = Qnil;
si = rb_reg_nth_match(1, m);
if (NIL_P(si))
si = rb_usascii_str_new2("");
{
VALUE t;
t = rb_reg_nth_match(2, m);
if (NIL_P(t))
t = rb_usascii_str_new2("1");
rb_str_concat(si, t);
}
re = rb_reg_match_post(m);
po = 0;
}
}
if (NIL_P(m)) {
m = f_match(comp_pat2, s);
if (NIL_P(m))
return rb_assoc_new(Qnil, self);
sr = rb_reg_nth_match(1, m);
if (NIL_P(rb_reg_nth_match(2, m)))
si = Qnil;
else {
VALUE t;
si = rb_reg_nth_match(3, m);
t = rb_reg_nth_match(4, m);
if (NIL_P(t))
t = rb_usascii_str_new2("1");
rb_str_concat(si, t);
}
re = rb_reg_match_post(m);
po = 0;
}
r = INT2FIX(0);
i = INT2FIX(0);
if (!NIL_P(sr)) {
if (strchr(RSTRING_PTR(sr), '/'))
r = f_to_r(sr);
else if (strpbrk(RSTRING_PTR(sr), ".eE"))
r = f_to_f(sr);
else
r = f_to_i(sr);
}
if (!NIL_P(si)) {
if (strchr(RSTRING_PTR(si), '/'))
i = f_to_r(si);
else if (strpbrk(RSTRING_PTR(si), ".eE"))
i = f_to_f(si);
else
i = f_to_i(si);
}
if (po)
return rb_assoc_new(rb_complex_polar(r, i), re);
else
return rb_assoc_new(rb_complex_new2(r, i), re);
}
}
static int
read_comp(const char **s, int strict,
VALUE *ret, char **b)
{
char *bb;
int sign;
VALUE num, num2;
bb = *b;
sign = read_sign(s, b);
if (isimagunit(**s)) {
(*s)++;
num = INT2FIX((sign == '-') ? -1 : + 1);
*ret = rb_complex_new2(ZERO, num);
return 1; /* e.g. "i" */
}
if (!read_rat_nos(s, strict, b)) {
**b = '\0';
num = str2num(bb);
*ret = rb_complex_new2(num, ZERO);
return 0; /* e.g. "-" */
}
**b = '\0';
num = str2num(bb);
if (isimagunit(**s)) {
(*s)++;
*ret = rb_complex_new2(ZERO, num);
return 1; /* e.g. "3i" */
}
if (**s == '@') {
int st;
(*s)++;
bb = *b;
st = read_rat(s, strict, b);
**b = '\0';
if (strlen(bb) < 1 ||
!isdecimal(*(bb + strlen(bb) - 1))) {
*ret = rb_complex_new2(num, ZERO);
return 0; /* e.g. "1@-" */
}
num2 = str2num(bb);
*ret = rb_complex_polar(num, num2);
if (!st)
return 0; /* e.g. "1@2." */
else
return 1; /* e.g. "1@2" */
}
if (issign(**s)) {
bb = *b;
sign = read_sign(s, b);
if (isimagunit(**s))
num2 = INT2FIX((sign == '-') ? -1 : + 1);
else {
if (!read_rat_nos(s, strict, b)) {
*ret = rb_complex_new2(num, ZERO);
return 0; /* e.g. "1+xi" */
}
**b = '\0';
num2 = str2num(bb);
}
if (!isimagunit(**s)) {
*ret = rb_complex_new2(num, ZERO);
return 0; /* e.g. "1+3x" */
}
(*s)++;
*ret = rb_complex_new2(num, num2);
return 1; /* e.g. "1+2i" */
}
/* !(@, - or +) */
{
*ret = rb_complex_new2(num, ZERO);
return 1; /* e.g. "3" */
}
}
static VALUE
string_to_c_internal(VALUE self)
{
VALUE s;
s = self;
if (RSTRING_LEN(s) == 0)
return rb_assoc_new(Qnil, self);
{
VALUE m, sr, si, re, r, i;
int po;
m = f_match(comp_pat0, s);
if (!NIL_P(m)) {
sr = f_aref(m, INT2FIX(1));
si = f_aref(m, INT2FIX(2));
re = f_post_match(m);
po = 1;
}
if (NIL_P(m)) {
m = f_match(comp_pat1, s);
if (!NIL_P(m)) {
sr = Qnil;
si = f_aref(m, INT2FIX(1));
if (NIL_P(si))
si = rb_usascii_str_new2("");
{
VALUE t;
t = f_aref(m, INT2FIX(2));
if (NIL_P(t))
t = rb_usascii_str_new2("1");
rb_str_concat(si, t);
}
re = f_post_match(m);
po = 0;
}
}
if (NIL_P(m)) {
m = f_match(comp_pat2, s);
if (NIL_P(m))
return rb_assoc_new(Qnil, self);
sr = f_aref(m, INT2FIX(1));
if (NIL_P(f_aref(m, INT2FIX(2))))
si = Qnil;
else {
VALUE t;
si = f_aref(m, INT2FIX(3));
t = f_aref(m, INT2FIX(4));
if (NIL_P(t))
t = rb_usascii_str_new2("1");
rb_str_concat(si, t);
}
re = f_post_match(m);
po = 0;
}
r = INT2FIX(0);
i = INT2FIX(0);
if (!NIL_P(sr)) {
if (f_include_p(sr, a_slash))
r = f_to_r(sr);
else if (f_gt_p(f_count(sr, a_dot_and_an_e), INT2FIX(0)))
r = f_to_f(sr);
else
r = f_to_i(sr);
}
if (!NIL_P(si)) {
if (f_include_p(si, a_slash))
i = f_to_r(si);
else if (f_gt_p(f_count(si, a_dot_and_an_e), INT2FIX(0)))
i = f_to_f(si);
else
i = f_to_i(si);
}
if (po)
return rb_assoc_new(rb_complex_polar(r, i), re);
else
return rb_assoc_new(rb_complex_new2(r, i), re);
}
}