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-rw-r--r--ext/date/date_core.c10258
1 files changed, 10258 insertions, 0 deletions
diff --git a/ext/date/date_core.c b/ext/date/date_core.c
new file mode 100644
index 0000000000..72d697c8ea
--- /dev/null
+++ b/ext/date/date_core.c
@@ -0,0 +1,10258 @@
+/*
+ date_core.c: Coded by Tadayoshi Funaba 2010-2014
+*/
+
+#include "ruby.h"
+#include "ruby/encoding.h"
+#include "ruby/util.h"
+#include <math.h>
+#include <time.h>
+#if defined(HAVE_SYS_TIME_H)
+#include <sys/time.h>
+#endif
+
+#undef NDEBUG
+#define NDEBUG
+#include <assert.h>
+
+#ifdef RUBY_EXTCONF_H
+#include RUBY_EXTCONF_H
+#endif
+
+#define USE_PACK
+
+static ID id_cmp, id_le_p, id_ge_p, id_eqeq_p;
+static VALUE cDate, cDateTime;
+static VALUE eDateError;
+static VALUE half_days_in_day, day_in_nanoseconds;
+static double positive_inf, negative_inf;
+
+/* used by deconstruct_keys */
+static VALUE sym_year, sym_month, sym_day, sym_yday, sym_wday;
+static VALUE sym_hour, sym_min, sym_sec, sym_sec_fraction, sym_zone;
+
+#define f_boolcast(x) ((x) ? Qtrue : Qfalse)
+
+#define f_abs(x) rb_funcall(x, rb_intern("abs"), 0)
+#define f_negate(x) rb_funcall(x, rb_intern("-@"), 0)
+#define f_add(x,y) rb_funcall(x, '+', 1, y)
+#define f_sub(x,y) rb_funcall(x, '-', 1, y)
+#define f_mul(x,y) rb_funcall(x, '*', 1, y)
+#define f_div(x,y) rb_funcall(x, '/', 1, y)
+#define f_quo(x,y) rb_funcall(x, rb_intern("quo"), 1, y)
+#define f_idiv(x,y) rb_funcall(x, rb_intern("div"), 1, y)
+#define f_mod(x,y) rb_funcall(x, '%', 1, y)
+#define f_remainder(x,y) rb_funcall(x, rb_intern("remainder"), 1, y)
+#define f_expt(x,y) rb_funcall(x, rb_intern("**"), 1, y)
+#define f_floor(x) rb_funcall(x, rb_intern("floor"), 0)
+#define f_ceil(x) rb_funcall(x, rb_intern("ceil"), 0)
+#define f_truncate(x) rb_funcall(x, rb_intern("truncate"), 0)
+#define f_round(x) rb_funcall(x, rb_intern("round"), 0)
+
+#define f_to_i(x) rb_funcall(x, rb_intern("to_i"), 0)
+#define f_to_r(x) rb_funcall(x, rb_intern("to_r"), 0)
+#define f_to_s(x) rb_funcall(x, rb_intern("to_s"), 0)
+#define f_inspect(x) rb_funcall(x, rb_intern("inspect"), 0)
+
+#define f_add3(x,y,z) f_add(f_add(x, y), z)
+#define f_sub3(x,y,z) f_sub(f_sub(x, y), z)
+
+#define f_frozen_ary(...) rb_ary_freeze(rb_ary_new3(__VA_ARGS__))
+
+static VALUE date_initialize(int argc, VALUE *argv, VALUE self);
+static VALUE datetime_initialize(int argc, VALUE *argv, VALUE self);
+
+#define RETURN_FALSE_UNLESS_NUMERIC(obj) if(!RTEST(rb_obj_is_kind_of((obj), rb_cNumeric))) return Qfalse
+inline static void
+check_numeric(VALUE obj, const char* field)
+{
+ if(!RTEST(rb_obj_is_kind_of(obj, rb_cNumeric))) {
+ rb_raise(rb_eTypeError, "invalid %s (not numeric)", field);
+ }
+}
+
+inline static int
+f_cmp(VALUE x, VALUE y)
+{
+ if (FIXNUM_P(x) && FIXNUM_P(y)) {
+ long c = FIX2LONG(x) - FIX2LONG(y);
+ if (c > 0)
+ return 1;
+ else if (c < 0)
+ return -1;
+ return 0;
+ }
+ return rb_cmpint(rb_funcallv(x, id_cmp, 1, &y), x, y);
+}
+
+inline static VALUE
+f_lt_p(VALUE x, VALUE y)
+{
+ if (FIXNUM_P(x) && FIXNUM_P(y))
+ return f_boolcast(FIX2LONG(x) < FIX2LONG(y));
+ return rb_funcall(x, '<', 1, y);
+}
+
+inline static VALUE
+f_gt_p(VALUE x, VALUE y)
+{
+ if (FIXNUM_P(x) && FIXNUM_P(y))
+ return f_boolcast(FIX2LONG(x) > FIX2LONG(y));
+ return rb_funcall(x, '>', 1, y);
+}
+
+inline static VALUE
+f_le_p(VALUE x, VALUE y)
+{
+ if (FIXNUM_P(x) && FIXNUM_P(y))
+ return f_boolcast(FIX2LONG(x) <= FIX2LONG(y));
+ return rb_funcall(x, id_le_p, 1, y);
+}
+
+inline static VALUE
+f_ge_p(VALUE x, VALUE y)
+{
+ if (FIXNUM_P(x) && FIXNUM_P(y))
+ return f_boolcast(FIX2LONG(x) >= FIX2LONG(y));
+ return rb_funcall(x, id_ge_p, 1, y);
+}
+
+inline static VALUE
+f_eqeq_p(VALUE x, VALUE y)
+{
+ if (FIXNUM_P(x) && FIXNUM_P(y))
+ return f_boolcast(FIX2LONG(x) == FIX2LONG(y));
+ return rb_funcall(x, id_eqeq_p, 1, y);
+}
+
+inline static VALUE
+f_zero_p(VALUE x)
+{
+ switch (TYPE(x)) {
+ case T_FIXNUM:
+ return f_boolcast(FIX2LONG(x) == 0);
+ case T_BIGNUM:
+ return Qfalse;
+ case T_RATIONAL:
+ {
+ VALUE num = rb_rational_num(x);
+ return f_boolcast(FIXNUM_P(num) && FIX2LONG(num) == 0);
+ }
+ }
+ return rb_funcall(x, id_eqeq_p, 1, INT2FIX(0));
+}
+
+#define f_nonzero_p(x) (!f_zero_p(x))
+
+inline static VALUE
+f_negative_p(VALUE x)
+{
+ if (FIXNUM_P(x))
+ return f_boolcast(FIX2LONG(x) < 0);
+ return rb_funcall(x, '<', 1, INT2FIX(0));
+}
+
+#define f_positive_p(x) (!f_negative_p(x))
+
+#define f_ajd(x) rb_funcall(x, rb_intern("ajd"), 0)
+#define f_jd(x) rb_funcall(x, rb_intern("jd"), 0)
+#define f_year(x) rb_funcall(x, rb_intern("year"), 0)
+#define f_mon(x) rb_funcall(x, rb_intern("mon"), 0)
+#define f_mday(x) rb_funcall(x, rb_intern("mday"), 0)
+#define f_wday(x) rb_funcall(x, rb_intern("wday"), 0)
+#define f_hour(x) rb_funcall(x, rb_intern("hour"), 0)
+#define f_min(x) rb_funcall(x, rb_intern("min"), 0)
+#define f_sec(x) rb_funcall(x, rb_intern("sec"), 0)
+
+/* copied from time.c */
+#define NDIV(x,y) (-(-((x)+1)/(y))-1)
+#define NMOD(x,y) ((y)-(-((x)+1)%(y))-1)
+#define DIV(n,d) ((n)<0 ? NDIV((n),(d)) : (n)/(d))
+#define MOD(n,d) ((n)<0 ? NMOD((n),(d)) : (n)%(d))
+
+#define HAVE_JD (1 << 0)
+#define HAVE_DF (1 << 1)
+#define HAVE_CIVIL (1 << 2)
+#define HAVE_TIME (1 << 3)
+#define COMPLEX_DAT (1 << 7)
+
+#define have_jd_p(x) ((x)->flags & HAVE_JD)
+#define have_df_p(x) ((x)->flags & HAVE_DF)
+#define have_civil_p(x) ((x)->flags & HAVE_CIVIL)
+#define have_time_p(x) ((x)->flags & HAVE_TIME)
+#define complex_dat_p(x) ((x)->flags & COMPLEX_DAT)
+#define simple_dat_p(x) (!complex_dat_p(x))
+
+#define ITALY 2299161 /* 1582-10-15 */
+#define ENGLAND 2361222 /* 1752-09-14 */
+#define JULIAN positive_inf
+#define GREGORIAN negative_inf
+#define DEFAULT_SG ITALY
+
+#define UNIX_EPOCH_IN_CJD INT2FIX(2440588) /* 1970-01-01 */
+
+#define MINUTE_IN_SECONDS 60
+#define HOUR_IN_SECONDS 3600
+#define DAY_IN_SECONDS 86400
+#define SECOND_IN_MILLISECONDS 1000
+#define SECOND_IN_NANOSECONDS 1000000000
+
+#define JC_PERIOD0 1461 /* 365.25 * 4 */
+#define GC_PERIOD0 146097 /* 365.2425 * 400 */
+#define CM_PERIOD0 71149239 /* (lcm 7 1461 146097) */
+#define CM_PERIOD (0xfffffff / CM_PERIOD0 * CM_PERIOD0)
+#define CM_PERIOD_JCY (CM_PERIOD / JC_PERIOD0 * 4)
+#define CM_PERIOD_GCY (CM_PERIOD / GC_PERIOD0 * 400)
+
+#define REFORM_BEGIN_YEAR 1582
+#define REFORM_END_YEAR 1930
+#define REFORM_BEGIN_JD 2298874 /* ns 1582-01-01 */
+#define REFORM_END_JD 2426355 /* os 1930-12-31 */
+
+#ifdef USE_PACK
+#define SEC_WIDTH 6
+#define MIN_WIDTH 6
+#define HOUR_WIDTH 5
+#define MDAY_WIDTH 5
+#define MON_WIDTH 4
+
+#define SEC_SHIFT 0
+#define MIN_SHIFT SEC_WIDTH
+#define HOUR_SHIFT (MIN_WIDTH + SEC_WIDTH)
+#define MDAY_SHIFT (HOUR_WIDTH + MIN_WIDTH + SEC_WIDTH)
+#define MON_SHIFT (MDAY_WIDTH + HOUR_WIDTH + MIN_WIDTH + SEC_WIDTH)
+
+#define PK_MASK(x) ((1 << (x)) - 1)
+
+#define EX_SEC(x) (((x) >> SEC_SHIFT) & PK_MASK(SEC_WIDTH))
+#define EX_MIN(x) (((x) >> MIN_SHIFT) & PK_MASK(MIN_WIDTH))
+#define EX_HOUR(x) (((x) >> HOUR_SHIFT) & PK_MASK(HOUR_WIDTH))
+#define EX_MDAY(x) (((x) >> MDAY_SHIFT) & PK_MASK(MDAY_WIDTH))
+#define EX_MON(x) (((x) >> MON_SHIFT) & PK_MASK(MON_WIDTH))
+
+#define PACK5(m,d,h,min,s) \
+ (((m) << MON_SHIFT) | ((d) << MDAY_SHIFT) |\
+ ((h) << HOUR_SHIFT) | ((min) << MIN_SHIFT) | ((s) << SEC_SHIFT))
+
+#define PACK2(m,d) \
+ (((m) << MON_SHIFT) | ((d) << MDAY_SHIFT))
+#endif
+
+#ifdef HAVE_FLOAT_H
+#include <float.h>
+#endif
+
+#if defined(FLT_RADIX) && defined(FLT_MANT_DIG) && FLT_RADIX == 2 && FLT_MANT_DIG > 22
+#define date_sg_t float
+#else
+#define date_sg_t double
+#endif
+
+#define JULIAN_EPOCH_DATE "-4712-01-01"
+#define JULIAN_EPOCH_DATETIME JULIAN_EPOCH_DATE "T00:00:00+00:00"
+#define JULIAN_EPOCH_DATETIME_RFC3339 "Mon, 1 Jan -4712 00:00:00 +0000"
+#define JULIAN_EPOCH_DATETIME_HTTPDATE "Mon, 01 Jan -4712 00:00:00 GMT"
+
+/* A set of nth, jd, df and sf denote ajd + 1/2. Each ajd begin at
+ * noon of GMT (assume equal to UTC). However, this begins at
+ * midnight.
+ */
+
+struct SimpleDateData
+{
+ unsigned flags;
+ int jd; /* as utc */
+ VALUE nth; /* not always canonicalized */
+ date_sg_t sg; /* 2298874..2426355 or -/+oo -- at most 22 bits */
+ /* decoded as utc=local */
+ int year; /* truncated */
+#ifndef USE_PACK
+ int mon;
+ int mday;
+ /* hour is zero */
+ /* min is zero */
+ /* sec is zero */
+#else
+ /* packed civil */
+ unsigned pc;
+#endif
+};
+
+struct ComplexDateData
+{
+ unsigned flags;
+ int jd; /* as utc */
+ VALUE nth; /* not always canonicalized */
+ date_sg_t sg; /* 2298874..2426355 or -/+oo -- at most 22 bits */
+ /* decoded as local */
+ int year; /* truncated */
+#ifndef USE_PACK
+ int mon;
+ int mday;
+ int hour;
+ int min;
+ int sec;
+#else
+ /* packed civil */
+ unsigned pc;
+#endif
+ int df; /* as utc, in secs */
+ int of; /* in secs */
+ VALUE sf; /* in nano secs */
+};
+
+union DateData {
+ unsigned flags;
+ struct SimpleDateData s;
+ struct ComplexDateData c;
+};
+
+#define get_d1(x)\
+ union DateData *dat;\
+ TypedData_Get_Struct(x, union DateData, &d_lite_type, dat);
+
+#define get_d1a(x)\
+ union DateData *adat;\
+ TypedData_Get_Struct(x, union DateData, &d_lite_type, adat);
+
+#define get_d1b(x)\
+ union DateData *bdat;\
+ TypedData_Get_Struct(x, union DateData, &d_lite_type, bdat);
+
+#define get_d2(x,y)\
+ union DateData *adat, *bdat;\
+ TypedData_Get_Struct(x, union DateData, &d_lite_type, adat);\
+ TypedData_Get_Struct(y, union DateData, &d_lite_type, bdat);
+
+inline static VALUE
+canon(VALUE x)
+{
+ if (RB_TYPE_P(x, T_RATIONAL)) {
+ VALUE den = rb_rational_den(x);
+ if (FIXNUM_P(den) && FIX2LONG(den) == 1)
+ return rb_rational_num(x);
+ }
+ return x;
+}
+
+#ifndef USE_PACK
+#define set_to_simple(obj, x, _nth, _jd ,_sg, _year, _mon, _mday, _flags) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, canon(_nth)); \
+ (x)->jd = _jd;\
+ (x)->sg = (date_sg_t)(_sg);\
+ (x)->year = _year;\
+ (x)->mon = _mon;\
+ (x)->mday = _mday;\
+ (x)->flags = (_flags) & ~COMPLEX_DAT;\
+} while (0)
+#else
+#define set_to_simple(obj, x, _nth, _jd ,_sg, _year, _mon, _mday, _flags) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, canon(_nth)); \
+ (x)->jd = _jd;\
+ (x)->sg = (date_sg_t)(_sg);\
+ (x)->year = _year;\
+ (x)->pc = PACK2(_mon, _mday);\
+ (x)->flags = (_flags) & ~COMPLEX_DAT;\
+} while (0)
+#endif
+
+#ifndef USE_PACK
+#define set_to_complex(obj, x, _nth, _jd ,_df, _sf, _of, _sg,\
+_year, _mon, _mday, _hour, _min, _sec, _flags) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, canon(_nth));\
+ (x)->jd = _jd;\
+ (x)->df = _df;\
+ RB_OBJ_WRITE((obj), &(x)->sf, canon(_sf));\
+ (x)->of = _of;\
+ (x)->sg = (date_sg_t)(_sg);\
+ (x)->year = _year;\
+ (x)->mon = _mon;\
+ (x)->mday = _mday;\
+ (x)->hour = _hour;\
+ (x)->min = _min;\
+ (x)->sec = _sec;\
+ (x)->flags = (_flags) | COMPLEX_DAT;\
+} while (0)
+#else
+#define set_to_complex(obj, x, _nth, _jd ,_df, _sf, _of, _sg,\
+_year, _mon, _mday, _hour, _min, _sec, _flags) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, canon(_nth));\
+ (x)->jd = _jd;\
+ (x)->df = _df;\
+ RB_OBJ_WRITE((obj), &(x)->sf, canon(_sf));\
+ (x)->of = _of;\
+ (x)->sg = (date_sg_t)(_sg);\
+ (x)->year = _year;\
+ (x)->pc = PACK5(_mon, _mday, _hour, _min, _sec);\
+ (x)->flags = (_flags) | COMPLEX_DAT;\
+} while (0)
+#endif
+
+#ifndef USE_PACK
+#define copy_simple_to_complex(obj, x, y) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, (y)->nth);\
+ (x)->jd = (y)->jd;\
+ (x)->df = 0;\
+ (x)->sf = INT2FIX(0);\
+ (x)->of = 0;\
+ (x)->sg = (date_sg_t)((y)->sg);\
+ (x)->year = (y)->year;\
+ (x)->mon = (y)->mon;\
+ (x)->mday = (y)->mday;\
+ (x)->hour = 0;\
+ (x)->min = 0;\
+ (x)->sec = 0;\
+ (x)->flags = (y)->flags;\
+} while (0)
+#else
+#define copy_simple_to_complex(obj, x, y) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, (y)->nth);\
+ (x)->jd = (y)->jd;\
+ (x)->df = 0;\
+ RB_OBJ_WRITE((obj), &(x)->sf, INT2FIX(0));\
+ (x)->of = 0;\
+ (x)->sg = (date_sg_t)((y)->sg);\
+ (x)->year = (y)->year;\
+ (x)->pc = PACK5(EX_MON((y)->pc), EX_MDAY((y)->pc), 0, 0, 0);\
+ (x)->flags = (y)->flags;\
+} while (0)
+#endif
+
+#ifndef USE_PACK
+#define copy_complex_to_simple(obj, x, y) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, (y)->nth);\
+ (x)->jd = (y)->jd;\
+ (x)->sg = (date_sg_t)((y)->sg);\
+ (x)->year = (y)->year;\
+ (x)->mon = (y)->mon;\
+ (x)->mday = (y)->mday;\
+ (x)->flags = (y)->flags;\
+} while (0)
+#else
+#define copy_complex_to_simple(obj, x, y) \
+do {\
+ RB_OBJ_WRITE((obj), &(x)->nth, (y)->nth);\
+ (x)->jd = (y)->jd;\
+ (x)->sg = (date_sg_t)((y)->sg);\
+ (x)->year = (y)->year;\
+ (x)->pc = PACK2(EX_MON((y)->pc), EX_MDAY((y)->pc));\
+ (x)->flags = (y)->flags;\
+} while (0)
+#endif
+
+/* base */
+
+static int c_valid_civil_p(int, int, int, double,
+ int *, int *, int *, int *);
+
+/* Check if using pure Gregorian calendar (sg == -Infinity) */
+#define c_gregorian_only_p(sg) (isinf(sg) && (sg) < 0)
+
+/*
+ * Fast path macros for pure Gregorian calendar.
+ * Sets *rjd to the JD value, *ns to 1 (new style), and returns.
+ */
+#define GREGORIAN_JD_FAST_PATH_RET(sg, jd_expr, rjd, ns) \
+ if (c_gregorian_only_p(sg)) { \
+ *(rjd) = (jd_expr); \
+ *(ns) = 1; \
+ return 1; \
+ }
+
+#define GREGORIAN_JD_FAST_PATH(sg, jd_expr, rjd, ns) \
+ if (c_gregorian_only_p(sg)) { \
+ *(rjd) = (jd_expr); \
+ *(ns) = 1; \
+ return; \
+ }
+
+/* Forward declarations for Neri-Schneider optimized functions */
+static int c_gregorian_civil_to_jd(int y, int m, int d);
+static void c_gregorian_jd_to_civil(int jd, int *ry, int *rm, int *rd);
+static int c_gregorian_fdoy(int y);
+static int c_gregorian_ldoy(int y);
+static int c_gregorian_ldom_jd(int y, int m);
+static int ns_jd_in_range(int jd);
+
+static int
+c_find_fdoy(int y, double sg, int *rjd, int *ns)
+{
+ int d, rm, rd;
+
+ GREGORIAN_JD_FAST_PATH_RET(sg, c_gregorian_fdoy(y), rjd, ns);
+
+ /* Keep existing loop for Julian/reform period */
+ for (d = 1; d < 31; d++)
+ if (c_valid_civil_p(y, 1, d, sg, &rm, &rd, rjd, ns))
+ return 1;
+ return 0;
+}
+
+static int
+c_find_ldoy(int y, double sg, int *rjd, int *ns)
+{
+ int i, rm, rd;
+
+ GREGORIAN_JD_FAST_PATH_RET(sg, c_gregorian_ldoy(y), rjd, ns);
+
+ /* Keep existing loop for Julian/reform period */
+ for (i = 0; i < 30; i++)
+ if (c_valid_civil_p(y, 12, 31 - i, sg, &rm, &rd, rjd, ns))
+ return 1;
+ return 0;
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static int
+c_find_fdom(int y, int m, double sg, int *rjd, int *ns)
+{
+ int d, rm, rd;
+
+ for (d = 1; d < 31; d++)
+ if (c_valid_civil_p(y, m, d, sg, &rm, &rd, rjd, ns))
+ return 1;
+ return 0;
+}
+#endif
+
+static int
+c_find_ldom(int y, int m, double sg, int *rjd, int *ns)
+{
+ int i, rm, rd;
+
+ GREGORIAN_JD_FAST_PATH_RET(sg, c_gregorian_ldom_jd(y, m), rjd, ns);
+
+ /* Keep existing loop for Julian/reform period */
+ for (i = 0; i < 30; i++)
+ if (c_valid_civil_p(y, m, 31 - i, sg, &rm, &rd, rjd, ns))
+ return 1;
+ return 0;
+}
+
+static void
+c_civil_to_jd(int y, int m, int d, double sg, int *rjd, int *ns)
+{
+ int jd;
+
+ GREGORIAN_JD_FAST_PATH(sg, c_gregorian_civil_to_jd(y, m, d), rjd, ns);
+
+ /* Calculate Gregorian JD using optimized algorithm */
+ jd = c_gregorian_civil_to_jd(y, m, d);
+
+ if (jd < sg) {
+ /* Before Gregorian switchover - use Julian calendar */
+ int y2 = y, m2 = m;
+ if (m2 <= 2) {
+ y2 -= 1;
+ m2 += 12;
+ }
+ jd = (int)(floor(365.25 * (y2 + 4716)) +
+ floor(30.6001 * (m2 + 1)) +
+ d - 1524);
+ *ns = 0;
+ }
+ else {
+ *ns = 1;
+ }
+
+ *rjd = jd;
+}
+
+static void
+c_jd_to_civil(int jd, double sg, int *ry, int *rm, int *rdom)
+{
+ /* Fast path: pure Gregorian or date after switchover, within safe range */
+ if ((c_gregorian_only_p(sg) || jd >= sg) && ns_jd_in_range(jd)) {
+ c_gregorian_jd_to_civil(jd, ry, rm, rdom);
+ return;
+ }
+
+ /* Original algorithm for Julian calendar or extreme dates */
+ {
+ double x, a, b, c, d, e, y, m, dom;
+
+ if (jd < sg)
+ a = jd;
+ else {
+ x = floor((jd - 1867216.25) / 36524.25);
+ a = jd + 1 + x - floor(x / 4.0);
+ }
+ b = a + 1524;
+ c = floor((b - 122.1) / 365.25);
+ d = floor(365.25 * c);
+ e = floor((b - d) / 30.6001);
+ dom = b - d - floor(30.6001 * e);
+ if (e <= 13) {
+ m = e - 1;
+ y = c - 4716;
+ }
+ else {
+ m = e - 13;
+ y = c - 4715;
+ }
+
+ *ry = (int)y;
+ *rm = (int)m;
+ *rdom = (int)dom;
+ }
+}
+
+static void
+c_ordinal_to_jd(int y, int d, double sg, int *rjd, int *ns)
+{
+ int ns2;
+
+ c_find_fdoy(y, sg, rjd, &ns2);
+ *rjd += d - 1;
+ *ns = (*rjd < sg) ? 0 : 1;
+}
+
+static void
+c_jd_to_ordinal(int jd, double sg, int *ry, int *rd)
+{
+ int rm2, rd2, rjd, ns;
+
+ c_jd_to_civil(jd, sg, ry, &rm2, &rd2);
+ c_find_fdoy(*ry, sg, &rjd, &ns);
+ *rd = (jd - rjd) + 1;
+}
+
+static void
+c_commercial_to_jd(int y, int w, int d, double sg, int *rjd, int *ns)
+{
+ int rjd2, ns2;
+
+ c_find_fdoy(y, sg, &rjd2, &ns2);
+ rjd2 += 3;
+ *rjd =
+ (rjd2 - MOD((rjd2 - 1) + 1, 7)) +
+ 7 * (w - 1) +
+ (d - 1);
+ *ns = (*rjd < sg) ? 0 : 1;
+}
+
+static void
+c_jd_to_commercial(int jd, double sg, int *ry, int *rw, int *rd)
+{
+ int ry2, rm2, rd2, a, rjd2, ns2;
+
+ c_jd_to_civil(jd - 3, sg, &ry2, &rm2, &rd2);
+ a = ry2;
+ c_commercial_to_jd(a + 1, 1, 1, sg, &rjd2, &ns2);
+ if (jd >= rjd2)
+ *ry = a + 1;
+ else {
+ c_commercial_to_jd(a, 1, 1, sg, &rjd2, &ns2);
+ *ry = a;
+ }
+ *rw = 1 + DIV(jd - rjd2, 7);
+ *rd = MOD(jd + 1, 7);
+ if (*rd == 0)
+ *rd = 7;
+}
+
+static void
+c_weeknum_to_jd(int y, int w, int d, int f, double sg, int *rjd, int *ns)
+{
+ int rjd2, ns2;
+
+ c_find_fdoy(y, sg, &rjd2, &ns2);
+ rjd2 += 6;
+ *rjd = (rjd2 - MOD(((rjd2 - f) + 1), 7) - 7) + 7 * w + d;
+ *ns = (*rjd < sg) ? 0 : 1;
+}
+
+static void
+c_jd_to_weeknum(int jd, int f, double sg, int *ry, int *rw, int *rd)
+{
+ int rm, rd2, rjd, ns, j;
+
+ c_jd_to_civil(jd, sg, ry, &rm, &rd2);
+ c_find_fdoy(*ry, sg, &rjd, &ns);
+ rjd += 6;
+ j = jd - (rjd - MOD((rjd - f) + 1, 7)) + 7;
+ *rw = (int)DIV(j, 7);
+ *rd = (int)MOD(j, 7);
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static void
+c_nth_kday_to_jd(int y, int m, int n, int k, double sg, int *rjd, int *ns)
+{
+ int rjd2, ns2;
+
+ if (n > 0) {
+ c_find_fdom(y, m, sg, &rjd2, &ns2);
+ rjd2 -= 1;
+ }
+ else {
+ c_find_ldom(y, m, sg, &rjd2, &ns2);
+ rjd2 += 7;
+ }
+ *rjd = (rjd2 - MOD((rjd2 - k) + 1, 7)) + 7 * n;
+ *ns = (*rjd < sg) ? 0 : 1;
+}
+#endif
+
+inline static int
+c_jd_to_wday(int jd)
+{
+ return MOD(jd + 1, 7);
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static void
+c_jd_to_nth_kday(int jd, double sg, int *ry, int *rm, int *rn, int *rk)
+{
+ int rd, rjd, ns2;
+
+ c_jd_to_civil(jd, sg, ry, rm, &rd);
+ c_find_fdom(*ry, *rm, sg, &rjd, &ns2);
+ *rn = DIV(jd - rjd, 7) + 1;
+ *rk = c_jd_to_wday(jd);
+}
+#endif
+
+static int
+c_valid_ordinal_p(int y, int d, double sg,
+ int *rd, int *rjd, int *ns)
+{
+ int ry2, rd2;
+
+ if (d < 0) {
+ int rjd2, ns2;
+
+ if (!c_find_ldoy(y, sg, &rjd2, &ns2))
+ return 0;
+ c_jd_to_ordinal(rjd2 + d + 1, sg, &ry2, &rd2);
+ if (ry2 != y)
+ return 0;
+ d = rd2;
+ }
+ c_ordinal_to_jd(y, d, sg, rjd, ns);
+ c_jd_to_ordinal(*rjd, sg, &ry2, &rd2);
+ if (ry2 != y || rd2 != d)
+ return 0;
+ return 1;
+}
+
+static const int monthtab[2][13] = {
+ { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+ { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+};
+
+inline static int
+c_julian_leap_p(int y)
+{
+ return MOD(y, 4) == 0;
+}
+
+inline static int
+c_gregorian_leap_p(int y)
+{
+ return (MOD(y, 4) == 0 && y % 100 != 0) || MOD(y, 400) == 0;
+}
+
+static int
+c_julian_last_day_of_month(int y, int m)
+{
+ assert(m >= 1 && m <= 12);
+ return monthtab[c_julian_leap_p(y) ? 1 : 0][m];
+}
+
+static int
+c_gregorian_last_day_of_month(int y, int m)
+{
+ assert(m >= 1 && m <= 12);
+ return monthtab[c_gregorian_leap_p(y) ? 1 : 0][m];
+}
+
+/*
+ * Neri-Schneider algorithm for optimized Gregorian date conversion.
+ * Reference: Neri & Schneider, "Euclidean Affine Functions and Applications
+ * to Calendar Algorithms", Software: Practice and Experience, 2023.
+ * https://arxiv.org/abs/2102.06959
+ *
+ * This algorithm provides ~2-3x speedup over traditional floating-point
+ * implementations by using pure integer arithmetic with multiplication
+ * and bit-shifts instead of expensive division operations.
+ */
+
+/* JDN of March 1, Year 0 in proleptic Gregorian calendar */
+#define NS_EPOCH 1721120
+
+/* Days in a 4-year cycle (3 normal years + 1 leap year) */
+#define NS_DAYS_IN_4_YEARS 1461
+
+/* Days in a 400-year Gregorian cycle (97 leap years in 400 years) */
+#define NS_DAYS_IN_400_YEARS 146097
+
+/* Years per century */
+#define NS_YEARS_PER_CENTURY 100
+
+/*
+ * Multiplier for extracting year within century using fixed-point arithmetic.
+ * This is ceil(2^32 / NS_DAYS_IN_4_YEARS) for the Euclidean affine function.
+ */
+#define NS_YEAR_MULTIPLIER 2939745
+
+/*
+ * Coefficients for month calculation from day-of-year.
+ * Maps day-of-year to month using: month = (NS_MONTH_COEFF * doy + NS_MONTH_OFFSET) >> 16
+ */
+#define NS_MONTH_COEFF 2141
+#define NS_MONTH_OFFSET 197913
+
+/*
+ * Coefficients for civil date to JDN month contribution.
+ * Maps month to accumulated days: days = (NS_CIVIL_MONTH_COEFF * m - NS_CIVIL_MONTH_OFFSET) / 32
+ */
+#define NS_CIVIL_MONTH_COEFF 979
+#define NS_CIVIL_MONTH_OFFSET 2919
+#define NS_CIVIL_MONTH_DIVISOR 32
+
+/* Days from March 1 to December 31 (for Jan/Feb year adjustment) */
+#define NS_DAYS_BEFORE_NEW_YEAR 306
+
+/*
+ * Safe bounds for Neri-Schneider algorithm to avoid integer overflow.
+ * These correspond to approximately years -1,000,000 to +1,000,000.
+ */
+#define NS_JD_MIN -364000000
+#define NS_JD_MAX 538000000
+
+inline static int
+ns_jd_in_range(int jd)
+{
+ return jd >= NS_JD_MIN && jd <= NS_JD_MAX;
+}
+
+/* Optimized: Gregorian date -> Julian Day Number */
+static int
+c_gregorian_civil_to_jd(int y, int m, int d)
+{
+ /* Shift epoch to March 1 of year 0 (Jan/Feb belong to previous year) */
+ int j = (m < 3) ? 1 : 0;
+ int y0 = y - j;
+ int m0 = j ? m + 12 : m;
+ int d0 = d - 1;
+
+ /* Calculate year contribution with leap year correction */
+ int q1 = DIV(y0, NS_YEARS_PER_CENTURY);
+ int yc = DIV(NS_DAYS_IN_4_YEARS * y0, 4) - q1 + DIV(q1, 4);
+
+ /* Calculate month contribution using integer arithmetic */
+ int mc = (NS_CIVIL_MONTH_COEFF * m0 - NS_CIVIL_MONTH_OFFSET) / NS_CIVIL_MONTH_DIVISOR;
+
+ /* Combine and add epoch offset to get JDN */
+ return yc + mc + d0 + NS_EPOCH;
+}
+
+/* Optimized: Julian Day Number -> Gregorian date */
+static void
+c_gregorian_jd_to_civil(int jd, int *ry, int *rm, int *rd)
+{
+ int r0, n1, q1, r1, n2, q2, r2, n3, q3, r3, y0, j;
+ uint64_t u2;
+
+ /* Convert JDN to rata die (March 1, Year 0 epoch) */
+ r0 = jd - NS_EPOCH;
+
+ /* Extract century and day within 400-year cycle */
+ /* Use Euclidean (floor) division for negative values */
+ n1 = 4 * r0 + 3;
+ q1 = DIV(n1, NS_DAYS_IN_400_YEARS);
+ r1 = MOD(n1, NS_DAYS_IN_400_YEARS) / 4;
+
+ /* Calculate year within century and day of year */
+ n2 = 4 * r1 + 3;
+ /* Use 64-bit arithmetic to avoid overflow */
+ u2 = (uint64_t)NS_YEAR_MULTIPLIER * (uint64_t)n2;
+ q2 = (int)(u2 >> 32);
+ r2 = (int)((uint32_t)u2 / NS_YEAR_MULTIPLIER / 4);
+
+ /* Calculate month and day using integer arithmetic */
+ n3 = NS_MONTH_COEFF * r2 + NS_MONTH_OFFSET;
+ q3 = n3 >> 16;
+ r3 = (n3 & 0xFFFF) / NS_MONTH_COEFF;
+
+ /* Combine century and year */
+ y0 = NS_YEARS_PER_CENTURY * q1 + q2;
+
+ /* Adjust for January/February (shift from fiscal year) */
+ j = (r2 >= NS_DAYS_BEFORE_NEW_YEAR) ? 1 : 0;
+
+ *ry = y0 + j;
+ *rm = j ? q3 - 12 : q3;
+ *rd = r3 + 1;
+}
+
+/* O(1) first day of year for Gregorian calendar */
+inline static int
+c_gregorian_fdoy(int y)
+{
+ return c_gregorian_civil_to_jd(y, 1, 1);
+}
+
+/* O(1) last day of year for Gregorian calendar */
+inline static int
+c_gregorian_ldoy(int y)
+{
+ return c_gregorian_civil_to_jd(y, 12, 31);
+}
+
+/* O(1) last day of month (JDN) for Gregorian calendar */
+inline static int
+c_gregorian_ldom_jd(int y, int m)
+{
+ return c_gregorian_civil_to_jd(y, m, c_gregorian_last_day_of_month(y, m));
+}
+
+static int
+c_valid_julian_p(int y, int m, int d, int *rm, int *rd)
+{
+ int last;
+
+ if (m < 0)
+ m += 13;
+ if (m < 1 || m > 12)
+ return 0;
+ last = c_julian_last_day_of_month(y, m);
+ if (d < 0)
+ d = last + d + 1;
+ if (d < 1 || d > last)
+ return 0;
+ *rm = m;
+ *rd = d;
+ return 1;
+}
+
+static int
+c_valid_gregorian_p(int y, int m, int d, int *rm, int *rd)
+{
+ int last;
+
+ if (m < 0)
+ m += 13;
+ if (m < 1 || m > 12)
+ return 0;
+ last = c_gregorian_last_day_of_month(y, m);
+ if (d < 0)
+ d = last + d + 1;
+ if (d < 1 || d > last)
+ return 0;
+ *rm = m;
+ *rd = d;
+ return 1;
+}
+
+static int
+c_valid_civil_p(int y, int m, int d, double sg,
+ int *rm, int *rd, int *rjd, int *ns)
+{
+ int ry;
+
+ if (m < 0)
+ m += 13;
+ if (m < 1 || m > 12)
+ return 0;
+ if (d < 0) {
+ if (!c_find_ldom(y, m, sg, rjd, ns))
+ return 0;
+ c_jd_to_civil(*rjd + d + 1, sg, &ry, rm, rd);
+ if (ry != y || *rm != m)
+ return 0;
+ d = *rd;
+ }
+ c_civil_to_jd(y, m, d, sg, rjd, ns);
+ c_jd_to_civil(*rjd, sg, &ry, rm, rd);
+ if (ry != y || *rm != m || *rd != d)
+ return 0;
+ return 1;
+}
+
+static int
+c_valid_commercial_p(int y, int w, int d, double sg,
+ int *rw, int *rd, int *rjd, int *ns)
+{
+ int ns2, ry2, rw2, rd2;
+
+ if (d < 0)
+ d += 8;
+ if (w < 0) {
+ int rjd2;
+
+ c_commercial_to_jd(y + 1, 1, 1, sg, &rjd2, &ns2);
+ c_jd_to_commercial(rjd2 + w * 7, sg, &ry2, &rw2, &rd2);
+ if (ry2 != y)
+ return 0;
+ w = rw2;
+ }
+ c_commercial_to_jd(y, w, d, sg, rjd, ns);
+ c_jd_to_commercial(*rjd, sg, &ry2, rw, rd);
+ if (y != ry2 || w != *rw || d != *rd)
+ return 0;
+ return 1;
+}
+
+static int
+c_valid_weeknum_p(int y, int w, int d, int f, double sg,
+ int *rw, int *rd, int *rjd, int *ns)
+{
+ int ns2, ry2, rw2, rd2;
+
+ if (d < 0)
+ d += 7;
+ if (w < 0) {
+ int rjd2;
+
+ c_weeknum_to_jd(y + 1, 1, f, f, sg, &rjd2, &ns2);
+ c_jd_to_weeknum(rjd2 + w * 7, f, sg, &ry2, &rw2, &rd2);
+ if (ry2 != y)
+ return 0;
+ w = rw2;
+ }
+ c_weeknum_to_jd(y, w, d, f, sg, rjd, ns);
+ c_jd_to_weeknum(*rjd, f, sg, &ry2, rw, rd);
+ if (y != ry2 || w != *rw || d != *rd)
+ return 0;
+ return 1;
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static int
+c_valid_nth_kday_p(int y, int m, int n, int k, double sg,
+ int *rm, int *rn, int *rk, int *rjd, int *ns)
+{
+ int ns2, ry2, rm2, rn2, rk2;
+
+ if (k < 0)
+ k += 7;
+ if (n < 0) {
+ int t, ny, nm, rjd2;
+
+ t = y * 12 + m;
+ ny = DIV(t, 12);
+ nm = MOD(t, 12) + 1;
+
+ c_nth_kday_to_jd(ny, nm, 1, k, sg, &rjd2, &ns2);
+ c_jd_to_nth_kday(rjd2 + n * 7, sg, &ry2, &rm2, &rn2, &rk2);
+ if (ry2 != y || rm2 != m)
+ return 0;
+ n = rn2;
+ }
+ c_nth_kday_to_jd(y, m, n, k, sg, rjd, ns);
+ c_jd_to_nth_kday(*rjd, sg, &ry2, rm, rn, rk);
+ if (y != ry2 || m != *rm || n != *rn || k != *rk)
+ return 0;
+ return 1;
+}
+#endif
+
+static int
+c_valid_time_p(int h, int min, int s, int *rh, int *rmin, int *rs)
+{
+ if (h < 0)
+ h += 24;
+ if (min < 0)
+ min += 60;
+ if (s < 0)
+ s += 60;
+ *rh = h;
+ *rmin = min;
+ *rs = s;
+ return !(h < 0 || h > 24 ||
+ min < 0 || min > 59 ||
+ s < 0 || s > 59 ||
+ (h == 24 && (min > 0 || s > 0)));
+}
+
+inline static int
+c_valid_start_p(double sg)
+{
+ if (isnan(sg))
+ return 0;
+ if (isinf(sg))
+ return 1;
+ if (sg < REFORM_BEGIN_JD || sg > REFORM_END_JD)
+ return 0;
+ return 1;
+}
+
+inline static int
+df_local_to_utc(int df, int of)
+{
+ df -= of;
+ if (df < 0)
+ df += DAY_IN_SECONDS;
+ else if (df >= DAY_IN_SECONDS)
+ df -= DAY_IN_SECONDS;
+ return df;
+}
+
+inline static int
+df_utc_to_local(int df, int of)
+{
+ df += of;
+ if (df < 0)
+ df += DAY_IN_SECONDS;
+ else if (df >= DAY_IN_SECONDS)
+ df -= DAY_IN_SECONDS;
+ return df;
+}
+
+inline static int
+jd_local_to_utc(int jd, int df, int of)
+{
+ df -= of;
+ if (df < 0)
+ jd -= 1;
+ else if (df >= DAY_IN_SECONDS)
+ jd += 1;
+ return jd;
+}
+
+inline static int
+jd_utc_to_local(int jd, int df, int of)
+{
+ df += of;
+ if (df < 0)
+ jd -= 1;
+ else if (df >= DAY_IN_SECONDS)
+ jd += 1;
+ return jd;
+}
+
+inline static int
+time_to_df(int h, int min, int s)
+{
+ return h * HOUR_IN_SECONDS + min * MINUTE_IN_SECONDS + s;
+}
+
+inline static void
+df_to_time(int df, int *h, int *min, int *s)
+{
+ *h = df / HOUR_IN_SECONDS;
+ df %= HOUR_IN_SECONDS;
+ *min = df / MINUTE_IN_SECONDS;
+ *s = df % MINUTE_IN_SECONDS;
+}
+
+static VALUE
+sec_to_day(VALUE s)
+{
+ if (FIXNUM_P(s))
+ return rb_rational_new2(s, INT2FIX(DAY_IN_SECONDS));
+ return f_quo(s, INT2FIX(DAY_IN_SECONDS));
+}
+
+inline static VALUE
+isec_to_day(int s)
+{
+ return sec_to_day(INT2FIX(s));
+}
+
+static VALUE
+ns_to_day(VALUE n)
+{
+ if (FIXNUM_P(n))
+ return rb_rational_new2(n, day_in_nanoseconds);
+ return f_quo(n, day_in_nanoseconds);
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+ms_to_sec(VALUE m)
+{
+ if (FIXNUM_P(m))
+ return rb_rational_new2(m, INT2FIX(SECOND_IN_MILLISECONDS));
+ return f_quo(m, INT2FIX(SECOND_IN_MILLISECONDS));
+}
+#endif
+
+static VALUE
+ns_to_sec(VALUE n)
+{
+ if (FIXNUM_P(n))
+ return rb_rational_new2(n, INT2FIX(SECOND_IN_NANOSECONDS));
+ return f_quo(n, INT2FIX(SECOND_IN_NANOSECONDS));
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+inline static VALUE
+ins_to_day(int n)
+{
+ return ns_to_day(INT2FIX(n));
+}
+#endif
+
+static int
+safe_mul_p(VALUE x, long m)
+{
+ long ix;
+
+ if (!FIXNUM_P(x))
+ return 0;
+ ix = FIX2LONG(x);
+ if (ix < 0) {
+ if (ix <= (FIXNUM_MIN / m))
+ return 0;
+ }
+ else {
+ if (ix >= (FIXNUM_MAX / m))
+ return 0;
+ }
+ return 1;
+}
+
+static VALUE
+day_to_sec(VALUE d)
+{
+ if (safe_mul_p(d, DAY_IN_SECONDS))
+ return LONG2FIX(FIX2LONG(d) * DAY_IN_SECONDS);
+ return f_mul(d, INT2FIX(DAY_IN_SECONDS));
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+day_to_ns(VALUE d)
+{
+ return f_mul(d, day_in_nanoseconds);
+}
+#endif
+
+static VALUE
+sec_to_ms(VALUE s)
+{
+ if (safe_mul_p(s, SECOND_IN_MILLISECONDS))
+ return LONG2FIX(FIX2LONG(s) * SECOND_IN_MILLISECONDS);
+ return f_mul(s, INT2FIX(SECOND_IN_MILLISECONDS));
+}
+
+static VALUE
+sec_to_ns(VALUE s)
+{
+ if (safe_mul_p(s, SECOND_IN_NANOSECONDS))
+ return LONG2FIX(FIX2LONG(s) * SECOND_IN_NANOSECONDS);
+ return f_mul(s, INT2FIX(SECOND_IN_NANOSECONDS));
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+isec_to_ns(int s)
+{
+ return sec_to_ns(INT2FIX(s));
+}
+#endif
+
+static VALUE
+div_day(VALUE d, VALUE *f)
+{
+ if (f)
+ *f = f_mod(d, INT2FIX(1));
+ return f_floor(d);
+}
+
+static VALUE
+div_df(VALUE d, VALUE *f)
+{
+ VALUE s = day_to_sec(d);
+
+ if (f)
+ *f = f_mod(s, INT2FIX(1));
+ return f_floor(s);
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+div_sf(VALUE s, VALUE *f)
+{
+ VALUE n = sec_to_ns(s);
+
+ if (f)
+ *f = f_mod(n, INT2FIX(1));
+ return f_floor(n);
+}
+#endif
+
+static void
+decode_day(VALUE d, VALUE *jd, VALUE *df, VALUE *sf)
+{
+ VALUE f;
+
+ *jd = div_day(d, &f);
+ *df = div_df(f, &f);
+ *sf = sec_to_ns(f);
+}
+
+inline static double
+s_virtual_sg(union DateData *x)
+{
+ if (isinf(x->s.sg))
+ return x->s.sg;
+ if (f_zero_p(x->s.nth))
+ return x->s.sg;
+ else if (f_negative_p(x->s.nth))
+ return positive_inf;
+ return negative_inf;
+}
+
+inline static double
+c_virtual_sg(union DateData *x)
+{
+ if (isinf(x->c.sg))
+ return x->c.sg;
+ if (f_zero_p(x->c.nth))
+ return x->c.sg;
+ else if (f_negative_p(x->c.nth))
+ return positive_inf;
+ return negative_inf;
+}
+
+inline static double
+m_virtual_sg(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return s_virtual_sg(x);
+ else
+ return c_virtual_sg(x);
+}
+
+#define canonicalize_jd(_nth, _jd) \
+do {\
+ if (_jd < 0) {\
+ _nth = f_sub(_nth, INT2FIX(1));\
+ _jd += CM_PERIOD;\
+ }\
+ if (_jd >= CM_PERIOD) {\
+ _nth = f_add(_nth, INT2FIX(1));\
+ _jd -= CM_PERIOD;\
+ }\
+} while (0)
+
+inline static void
+canonicalize_s_jd(VALUE obj, union DateData *x)
+{
+ int j = x->s.jd;
+ VALUE nth = x->s.nth;
+ assert(have_jd_p(x));
+ canonicalize_jd(nth, x->s.jd);
+ RB_OBJ_WRITE(obj, &x->s.nth, nth);
+ if (x->s.jd != j)
+ x->flags &= ~HAVE_CIVIL;
+}
+
+inline static void
+get_s_jd(union DateData *x)
+{
+ assert(simple_dat_p(x));
+ if (!have_jd_p(x)) {
+ int jd, ns;
+
+ assert(have_civil_p(x));
+#ifndef USE_PACK
+ c_civil_to_jd(x->s.year, x->s.mon, x->s.mday,
+ s_virtual_sg(x), &jd, &ns);
+#else
+ c_civil_to_jd(x->s.year, EX_MON(x->s.pc), EX_MDAY(x->s.pc),
+ s_virtual_sg(x), &jd, &ns);
+#endif
+ x->s.jd = jd;
+ x->s.flags |= HAVE_JD;
+ }
+}
+
+inline static void
+get_s_civil(union DateData *x)
+{
+ assert(simple_dat_p(x));
+ if (!have_civil_p(x)) {
+ int y, m, d;
+
+ assert(have_jd_p(x));
+ c_jd_to_civil(x->s.jd, s_virtual_sg(x), &y, &m, &d);
+ x->s.year = y;
+#ifndef USE_PACK
+ x->s.mon = m;
+ x->s.mday = d;
+#else
+ x->s.pc = PACK2(m, d);
+#endif
+ x->s.flags |= HAVE_CIVIL;
+ }
+}
+
+inline static void
+get_c_df(union DateData *x)
+{
+ assert(complex_dat_p(x));
+ if (!have_df_p(x)) {
+ assert(have_time_p(x));
+#ifndef USE_PACK
+ x->c.df = df_local_to_utc(time_to_df(x->c.hour, x->c.min, x->c.sec),
+ x->c.of);
+#else
+ x->c.df = df_local_to_utc(time_to_df(EX_HOUR(x->c.pc),
+ EX_MIN(x->c.pc),
+ EX_SEC(x->c.pc)),
+ x->c.of);
+#endif
+ x->c.flags |= HAVE_DF;
+ }
+}
+
+inline static void
+get_c_time(union DateData *x)
+{
+ assert(complex_dat_p(x));
+ if (!have_time_p(x)) {
+#ifndef USE_PACK
+ int r;
+ assert(have_df_p(x));
+ r = df_utc_to_local(x->c.df, x->c.of);
+ df_to_time(r, &x->c.hour, &x->c.min, &x->c.sec);
+ x->c.flags |= HAVE_TIME;
+#else
+ int r, m, d, h, min, s;
+
+ assert(have_df_p(x));
+ m = EX_MON(x->c.pc);
+ d = EX_MDAY(x->c.pc);
+ r = df_utc_to_local(x->c.df, x->c.of);
+ df_to_time(r, &h, &min, &s);
+ x->c.pc = PACK5(m, d, h, min, s);
+ x->c.flags |= HAVE_TIME;
+#endif
+ }
+}
+
+inline static void
+canonicalize_c_jd(VALUE obj, union DateData *x)
+{
+ int j = x->c.jd;
+ VALUE nth = x->c.nth;
+ assert(have_jd_p(x));
+ canonicalize_jd(nth, x->c.jd);
+ RB_OBJ_WRITE(obj, &x->c.nth, nth);
+ if (x->c.jd != j)
+ x->flags &= ~HAVE_CIVIL;
+}
+
+inline static void
+get_c_jd(union DateData *x)
+{
+ assert(complex_dat_p(x));
+ if (!have_jd_p(x)) {
+ int jd, ns;
+
+ assert(have_civil_p(x));
+#ifndef USE_PACK
+ c_civil_to_jd(x->c.year, x->c.mon, x->c.mday,
+ c_virtual_sg(x), &jd, &ns);
+#else
+ c_civil_to_jd(x->c.year, EX_MON(x->c.pc), EX_MDAY(x->c.pc),
+ c_virtual_sg(x), &jd, &ns);
+#endif
+
+ get_c_time(x);
+#ifndef USE_PACK
+ x->c.jd = jd_local_to_utc(jd,
+ time_to_df(x->c.hour, x->c.min, x->c.sec),
+ x->c.of);
+#else
+ x->c.jd = jd_local_to_utc(jd,
+ time_to_df(EX_HOUR(x->c.pc),
+ EX_MIN(x->c.pc),
+ EX_SEC(x->c.pc)),
+ x->c.of);
+#endif
+ x->c.flags |= HAVE_JD;
+ }
+}
+
+inline static void
+get_c_civil(union DateData *x)
+{
+ assert(complex_dat_p(x));
+ if (!have_civil_p(x)) {
+#ifndef USE_PACK
+ int jd, y, m, d;
+#else
+ int jd, y, m, d, h, min, s;
+#endif
+
+ assert(have_jd_p(x));
+ get_c_df(x);
+ jd = jd_utc_to_local(x->c.jd, x->c.df, x->c.of);
+ c_jd_to_civil(jd, c_virtual_sg(x), &y, &m, &d);
+ x->c.year = y;
+#ifndef USE_PACK
+ x->c.mon = m;
+ x->c.mday = d;
+#else
+ h = EX_HOUR(x->c.pc);
+ min = EX_MIN(x->c.pc);
+ s = EX_SEC(x->c.pc);
+ x->c.pc = PACK5(m, d, h, min, s);
+#endif
+ x->c.flags |= HAVE_CIVIL;
+ }
+}
+
+inline static int
+local_jd(union DateData *x)
+{
+ assert(complex_dat_p(x));
+ assert(have_jd_p(x));
+ assert(have_df_p(x));
+ return jd_utc_to_local(x->c.jd, x->c.df, x->c.of);
+}
+
+inline static int
+local_df(union DateData *x)
+{
+ assert(complex_dat_p(x));
+ assert(have_df_p(x));
+ return df_utc_to_local(x->c.df, x->c.of);
+}
+
+static void
+decode_year(VALUE y, double style,
+ VALUE *nth, int *ry)
+{
+ int period;
+ VALUE t;
+
+ period = (style < 0) ?
+ CM_PERIOD_GCY :
+ CM_PERIOD_JCY;
+ if (FIXNUM_P(y)) {
+ long iy, it, inth;
+
+ iy = FIX2LONG(y);
+ if (iy >= (FIXNUM_MAX - 4712))
+ goto big;
+ it = iy + 4712; /* shift */
+ inth = DIV(it, ((long)period));
+ *nth = LONG2FIX(inth);
+ if (inth)
+ it = MOD(it, ((long)period));
+ *ry = (int)it - 4712; /* unshift */
+ return;
+ }
+ big:
+ t = f_add(y, INT2FIX(4712)); /* shift */
+ *nth = f_idiv(t, INT2FIX(period));
+ if (f_nonzero_p(*nth))
+ t = f_mod(t, INT2FIX(period));
+ *ry = FIX2INT(t) - 4712; /* unshift */
+}
+
+static void
+encode_year(VALUE nth, int y, double style,
+ VALUE *ry)
+{
+ int period;
+ VALUE t;
+
+ period = (style < 0) ?
+ CM_PERIOD_GCY :
+ CM_PERIOD_JCY;
+ if (f_zero_p(nth))
+ *ry = INT2FIX(y);
+ else {
+ t = f_mul(INT2FIX(period), nth);
+ t = f_add(t, INT2FIX(y));
+ *ry = t;
+ }
+}
+
+static void
+decode_jd(VALUE jd, VALUE *nth, int *rjd)
+{
+ *nth = f_idiv(jd, INT2FIX(CM_PERIOD));
+ if (f_zero_p(*nth)) {
+ *rjd = FIX2INT(jd);
+ return;
+ }
+ *rjd = FIX2INT(f_mod(jd, INT2FIX(CM_PERIOD)));
+}
+
+static void
+encode_jd(VALUE nth, int jd, VALUE *rjd)
+{
+ if (f_zero_p(nth)) {
+ *rjd = INT2FIX(jd);
+ return;
+ }
+ *rjd = f_add(f_mul(INT2FIX(CM_PERIOD), nth), INT2FIX(jd));
+}
+
+inline static double
+guess_style(VALUE y, double sg) /* -/+oo or zero */
+{
+ double style = 0;
+
+ if (isinf(sg))
+ style = sg;
+ else if (!FIXNUM_P(y))
+ style = f_positive_p(y) ? negative_inf : positive_inf;
+ else {
+ long iy = FIX2LONG(y);
+
+ assert(FIXNUM_P(y));
+ if (iy < REFORM_BEGIN_YEAR)
+ style = positive_inf;
+ else if (iy > REFORM_END_YEAR)
+ style = negative_inf;
+ }
+ return style;
+}
+
+inline static void
+m_canonicalize_jd(VALUE obj, union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ get_s_jd(x);
+ canonicalize_s_jd(obj, x);
+ }
+ else {
+ get_c_jd(x);
+ canonicalize_c_jd(obj, x);
+ }
+}
+
+inline static VALUE
+m_nth(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return x->s.nth;
+ else {
+ get_c_civil(x);
+ return x->c.nth;
+ }
+}
+
+inline static int
+m_jd(union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ get_s_jd(x);
+ return x->s.jd;
+ }
+ else {
+ get_c_jd(x);
+ return x->c.jd;
+ }
+}
+
+static VALUE
+m_real_jd(union DateData *x)
+{
+ VALUE nth, rjd;
+ int jd;
+
+ nth = m_nth(x);
+ jd = m_jd(x);
+
+ encode_jd(nth, jd, &rjd);
+ return rjd;
+}
+
+static int
+m_local_jd(union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ get_s_jd(x);
+ return x->s.jd;
+ }
+ else {
+ get_c_jd(x);
+ get_c_df(x);
+ return local_jd(x);
+ }
+}
+
+static VALUE
+m_real_local_jd(union DateData *x)
+{
+ VALUE nth, rjd;
+ int jd;
+
+ nth = m_nth(x);
+ jd = m_local_jd(x);
+
+ encode_jd(nth, jd, &rjd);
+ return rjd;
+}
+
+inline static int
+m_df(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return 0;
+ else {
+ get_c_df(x);
+ return x->c.df;
+ }
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+m_df_in_day(union DateData *x)
+{
+ return isec_to_day(m_df(x));
+}
+#endif
+
+static int
+m_local_df(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return 0;
+ else {
+ get_c_df(x);
+ return local_df(x);
+ }
+}
+
+#ifndef NDEBUG
+static VALUE
+m_local_df_in_day(union DateData *x)
+{
+ return isec_to_day(m_local_df(x));
+}
+#endif
+
+inline static VALUE
+m_sf(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return INT2FIX(0);
+ else
+ return x->c.sf;
+}
+
+#ifndef NDEBUG
+static VALUE
+m_sf_in_day(union DateData *x)
+{
+ return ns_to_day(m_sf(x));
+}
+#endif
+
+static VALUE
+m_sf_in_sec(union DateData *x)
+{
+ return ns_to_sec(m_sf(x));
+}
+
+static VALUE
+m_fr(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return INT2FIX(0);
+ else {
+ int df;
+ VALUE sf, fr;
+
+ df = m_local_df(x);
+ sf = m_sf(x);
+ fr = isec_to_day(df);
+ if (f_nonzero_p(sf))
+ fr = f_add(fr, ns_to_day(sf));
+ return fr;
+ }
+}
+
+#define HALF_DAYS_IN_SECONDS (DAY_IN_SECONDS / 2)
+
+static VALUE
+m_ajd(union DateData *x)
+{
+ VALUE r, sf;
+ int df;
+
+ if (simple_dat_p(x)) {
+ r = m_real_jd(x);
+ if (FIXNUM_P(r) && FIX2LONG(r) <= (FIXNUM_MAX / 2) && FIX2LONG(r) >= (FIXNUM_MIN + 1) / 2) {
+ long ir = FIX2LONG(r);
+ ir = ir * 2 - 1;
+ return rb_rational_new2(LONG2FIX(ir), INT2FIX(2));
+ }
+ else
+ return rb_rational_new2(f_sub(f_mul(r,
+ INT2FIX(2)),
+ INT2FIX(1)),
+ INT2FIX(2));
+ }
+
+ r = m_real_jd(x);
+ df = m_df(x);
+ df -= HALF_DAYS_IN_SECONDS;
+ if (df)
+ r = f_add(r, isec_to_day(df));
+ sf = m_sf(x);
+ if (f_nonzero_p(sf))
+ r = f_add(r, ns_to_day(sf));
+
+ return r;
+}
+
+static VALUE
+m_amjd(union DateData *x)
+{
+ VALUE r, sf;
+ int df;
+
+ r = m_real_jd(x);
+ if (FIXNUM_P(r) && FIX2LONG(r) >= (FIXNUM_MIN + 2400001)) {
+ long ir = FIX2LONG(r);
+ ir -= 2400001;
+ r = rb_rational_new1(LONG2FIX(ir));
+ }
+ else
+ r = rb_rational_new1(f_sub(m_real_jd(x),
+ INT2FIX(2400001)));
+
+ if (simple_dat_p(x))
+ return r;
+
+ df = m_df(x);
+ if (df)
+ r = f_add(r, isec_to_day(df));
+ sf = m_sf(x);
+ if (f_nonzero_p(sf))
+ r = f_add(r, ns_to_day(sf));
+
+ return r;
+}
+
+inline static int
+m_of(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return 0;
+ else {
+ get_c_jd(x);
+ return x->c.of;
+ }
+}
+
+static VALUE
+m_of_in_day(union DateData *x)
+{
+ return isec_to_day(m_of(x));
+}
+
+inline static double
+m_sg(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return x->s.sg;
+ else {
+ get_c_jd(x);
+ return x->c.sg;
+ }
+}
+
+static int
+m_julian_p(union DateData *x)
+{
+ int jd;
+ double sg;
+
+ if (simple_dat_p(x)) {
+ get_s_jd(x);
+ jd = x->s.jd;
+ sg = s_virtual_sg(x);
+ }
+ else {
+ get_c_jd(x);
+ jd = x->c.jd;
+ sg = c_virtual_sg(x);
+ }
+ if (isinf(sg))
+ return sg == positive_inf;
+ return jd < sg;
+}
+
+inline static int
+m_gregorian_p(union DateData *x)
+{
+ return !m_julian_p(x);
+}
+
+inline static int
+m_proleptic_julian_p(union DateData *x)
+{
+ double sg;
+
+ sg = m_sg(x);
+ if (isinf(sg) && sg > 0)
+ return 1;
+ return 0;
+}
+
+inline static int
+m_proleptic_gregorian_p(union DateData *x)
+{
+ double sg;
+
+ sg = m_sg(x);
+ if (isinf(sg) && sg < 0)
+ return 1;
+ return 0;
+}
+
+inline static int
+m_year(union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ get_s_civil(x);
+ return x->s.year;
+ }
+ else {
+ get_c_civil(x);
+ return x->c.year;
+ }
+}
+
+static VALUE
+m_real_year(union DateData *x)
+{
+ VALUE nth, ry;
+ int year;
+
+ nth = m_nth(x);
+ year = m_year(x);
+
+ if (f_zero_p(nth))
+ return INT2FIX(year);
+
+ encode_year(nth, year,
+ m_gregorian_p(x) ? -1 : +1,
+ &ry);
+ return ry;
+}
+
+inline static int
+m_mon(union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ get_s_civil(x);
+#ifndef USE_PACK
+ return x->s.mon;
+#else
+ return EX_MON(x->s.pc);
+#endif
+ }
+ else {
+ get_c_civil(x);
+#ifndef USE_PACK
+ return x->c.mon;
+#else
+ return EX_MON(x->c.pc);
+#endif
+ }
+}
+
+inline static int
+m_mday(union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ get_s_civil(x);
+#ifndef USE_PACK
+ return x->s.mday;
+#else
+ return EX_MDAY(x->s.pc);
+#endif
+ }
+ else {
+ get_c_civil(x);
+#ifndef USE_PACK
+ return x->c.mday;
+#else
+ return EX_MDAY(x->c.pc);
+#endif
+ }
+}
+
+static const int yeartab[2][13] = {
+ { 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 },
+ { 0, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 }
+};
+
+static int
+c_julian_to_yday(int y, int m, int d)
+{
+ assert(m >= 1 && m <= 12);
+ return yeartab[c_julian_leap_p(y) ? 1 : 0][m] + d;
+}
+
+static int
+c_gregorian_to_yday(int y, int m, int d)
+{
+ assert(m >= 1 && m <= 12);
+ return yeartab[c_gregorian_leap_p(y) ? 1 : 0][m] + d;
+}
+
+static int
+m_yday(union DateData *x)
+{
+ int jd, ry, rd;
+ double sg;
+
+ jd = m_local_jd(x);
+ sg = m_virtual_sg(x); /* !=m_sg() */
+
+ if (m_proleptic_gregorian_p(x) ||
+ (jd - sg) > 366)
+ return c_gregorian_to_yday(m_year(x), m_mon(x), m_mday(x));
+ if (m_proleptic_julian_p(x))
+ return c_julian_to_yday(m_year(x), m_mon(x), m_mday(x));
+ c_jd_to_ordinal(jd, sg, &ry, &rd);
+ return rd;
+}
+
+static int
+m_wday(union DateData *x)
+{
+ return c_jd_to_wday(m_local_jd(x));
+}
+
+static int
+m_cwyear(union DateData *x)
+{
+ int ry, rw, rd;
+
+ c_jd_to_commercial(m_local_jd(x), m_virtual_sg(x), /* !=m_sg() */
+ &ry, &rw, &rd);
+ return ry;
+}
+
+static VALUE
+m_real_cwyear(union DateData *x)
+{
+ VALUE nth, ry;
+ int year;
+
+ nth = m_nth(x);
+ year = m_cwyear(x);
+
+ if (f_zero_p(nth))
+ return INT2FIX(year);
+
+ encode_year(nth, year,
+ m_gregorian_p(x) ? -1 : +1,
+ &ry);
+ return ry;
+}
+
+static int
+m_cweek(union DateData *x)
+{
+ int ry, rw, rd;
+
+ c_jd_to_commercial(m_local_jd(x), m_virtual_sg(x), /* !=m_sg() */
+ &ry, &rw, &rd);
+ return rw;
+}
+
+static int
+m_cwday(union DateData *x)
+{
+ int w;
+
+ w = m_wday(x);
+ if (w == 0)
+ w = 7;
+ return w;
+}
+
+static int
+m_wnumx(union DateData *x, int f)
+{
+ int ry, rw, rd;
+
+ c_jd_to_weeknum(m_local_jd(x), f, m_virtual_sg(x), /* !=m_sg() */
+ &ry, &rw, &rd);
+ return rw;
+}
+
+static int
+m_wnum0(union DateData *x)
+{
+ return m_wnumx(x, 0);
+}
+
+static int
+m_wnum1(union DateData *x)
+{
+ return m_wnumx(x, 1);
+}
+
+inline static int
+m_hour(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return 0;
+ else {
+ get_c_time(x);
+#ifndef USE_PACK
+ return x->c.hour;
+#else
+ return EX_HOUR(x->c.pc);
+#endif
+ }
+}
+
+inline static int
+m_min(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return 0;
+ else {
+ get_c_time(x);
+#ifndef USE_PACK
+ return x->c.min;
+#else
+ return EX_MIN(x->c.pc);
+#endif
+ }
+}
+
+inline static int
+m_sec(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return 0;
+ else {
+ get_c_time(x);
+#ifndef USE_PACK
+ return x->c.sec;
+#else
+ return EX_SEC(x->c.pc);
+#endif
+ }
+}
+
+#define decode_offset(of,s,h,m)\
+do {\
+ int a;\
+ s = (of < 0) ? '-' : '+';\
+ a = (of < 0) ? -of : of;\
+ h = a / HOUR_IN_SECONDS;\
+ m = a % HOUR_IN_SECONDS / MINUTE_IN_SECONDS;\
+} while (0)
+
+static VALUE
+of2str(int of)
+{
+ int s, h, m;
+
+ decode_offset(of, s, h, m);
+ return rb_enc_sprintf(rb_usascii_encoding(), "%c%02d:%02d", s, h, m);
+}
+
+static VALUE
+m_zone(union DateData *x)
+{
+ if (simple_dat_p(x))
+ return rb_usascii_str_new2("+00:00");
+ return of2str(m_of(x));
+}
+
+inline static VALUE
+f_kind_of_p(VALUE x, VALUE c)
+{
+ return rb_obj_is_kind_of(x, c);
+}
+
+inline static VALUE
+k_date_p(VALUE x)
+{
+ return f_kind_of_p(x, cDate);
+}
+
+inline static VALUE
+k_numeric_p(VALUE x)
+{
+ return f_kind_of_p(x, rb_cNumeric);
+}
+
+inline static VALUE
+k_rational_p(VALUE x)
+{
+ return f_kind_of_p(x, rb_cRational);
+}
+
+static inline void
+expect_numeric(VALUE x)
+{
+ if (!k_numeric_p(x))
+ rb_raise(rb_eTypeError, "expected numeric");
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static void
+civil_to_jd(VALUE y, int m, int d, double sg,
+ VALUE *nth, int *ry,
+ int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+
+ if (style == 0) {
+ int jd;
+
+ c_civil_to_jd(FIX2INT(y), m, d, sg, &jd, ns);
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ c_civil_to_jd(*ry, m, d, style, rjd, ns);
+ }
+}
+
+static void
+jd_to_civil(VALUE jd, double sg,
+ VALUE *nth, int *rjd,
+ int *ry, int *rm, int *rd)
+{
+ decode_jd(jd, nth, rjd);
+ c_jd_to_civil(*rjd, sg, ry, rm, rd);
+}
+
+static void
+ordinal_to_jd(VALUE y, int d, double sg,
+ VALUE *nth, int *ry,
+ int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+
+ if (style == 0) {
+ int jd;
+
+ c_ordinal_to_jd(FIX2INT(y), d, sg, &jd, ns);
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ c_ordinal_to_jd(*ry, d, style, rjd, ns);
+ }
+}
+
+static void
+jd_to_ordinal(VALUE jd, double sg,
+ VALUE *nth, int *rjd,
+ int *ry, int *rd)
+{
+ decode_jd(jd, nth, rjd);
+ c_jd_to_ordinal(*rjd, sg, ry, rd);
+}
+
+static void
+commercial_to_jd(VALUE y, int w, int d, double sg,
+ VALUE *nth, int *ry,
+ int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+
+ if (style == 0) {
+ int jd;
+
+ c_commercial_to_jd(FIX2INT(y), w, d, sg, &jd, ns);
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ c_commercial_to_jd(*ry, w, d, style, rjd, ns);
+ }
+}
+
+static void
+jd_to_commercial(VALUE jd, double sg,
+ VALUE *nth, int *rjd,
+ int *ry, int *rw, int *rd)
+{
+ decode_jd(jd, nth, rjd);
+ c_jd_to_commercial(*rjd, sg, ry, rw, rd);
+}
+
+static void
+weeknum_to_jd(VALUE y, int w, int d, int f, double sg,
+ VALUE *nth, int *ry,
+ int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+
+ if (style == 0) {
+ int jd;
+
+ c_weeknum_to_jd(FIX2INT(y), w, d, f, sg, &jd, ns);
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ c_weeknum_to_jd(*ry, w, d, f, style, rjd, ns);
+ }
+}
+
+static void
+jd_to_weeknum(VALUE jd, int f, double sg,
+ VALUE *nth, int *rjd,
+ int *ry, int *rw, int *rd)
+{
+ decode_jd(jd, nth, rjd);
+ c_jd_to_weeknum(*rjd, f, sg, ry, rw, rd);
+}
+
+static void
+nth_kday_to_jd(VALUE y, int m, int n, int k, double sg,
+ VALUE *nth, int *ry,
+ int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+
+ if (style == 0) {
+ int jd;
+
+ c_nth_kday_to_jd(FIX2INT(y), m, n, k, sg, &jd, ns);
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ c_nth_kday_to_jd(*ry, m, n, k, style, rjd, ns);
+ }
+}
+
+static void
+jd_to_nth_kday(VALUE jd, double sg,
+ VALUE *nth, int *rjd,
+ int *ry, int *rm, int *rn, int *rk)
+{
+ decode_jd(jd, nth, rjd);
+ c_jd_to_nth_kday(*rjd, sg, ry, rm, rn, rk);
+}
+#endif
+
+static int
+valid_ordinal_p(VALUE y, int d, double sg,
+ VALUE *nth, int *ry,
+ int *rd, int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+ int r;
+
+ if (style == 0) {
+ int jd;
+
+ r = c_valid_ordinal_p(FIX2INT(y), d, sg, rd, &jd, ns);
+ if (!r)
+ return 0;
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ r = c_valid_ordinal_p(*ry, d, style, rd, rjd, ns);
+ }
+ return r;
+}
+
+static int
+valid_gregorian_p(VALUE y, int m, int d,
+ VALUE *nth, int *ry,
+ int *rm, int *rd)
+{
+ decode_year(y, -1, nth, ry);
+ return c_valid_gregorian_p(*ry, m, d, rm, rd);
+}
+
+static int
+valid_civil_p(VALUE y, int m, int d, double sg,
+ VALUE *nth, int *ry,
+ int *rm, int *rd, int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+ int r;
+
+ if (style == 0) {
+ int jd;
+
+ r = c_valid_civil_p(FIX2INT(y), m, d, sg, rm, rd, &jd, ns);
+ if (!r)
+ return 0;
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ if (style < 0)
+ r = c_valid_gregorian_p(*ry, m, d, rm, rd);
+ else
+ r = c_valid_julian_p(*ry, m, d, rm, rd);
+ if (!r)
+ return 0;
+ c_civil_to_jd(*ry, *rm, *rd, style, rjd, ns);
+ }
+ return r;
+}
+
+static int
+valid_commercial_p(VALUE y, int w, int d, double sg,
+ VALUE *nth, int *ry,
+ int *rw, int *rd, int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+ int r;
+
+ if (style == 0) {
+ int jd;
+
+ r = c_valid_commercial_p(FIX2INT(y), w, d, sg, rw, rd, &jd, ns);
+ if (!r)
+ return 0;
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ r = c_valid_commercial_p(*ry, w, d, style, rw, rd, rjd, ns);
+ }
+ return r;
+}
+
+static int
+valid_weeknum_p(VALUE y, int w, int d, int f, double sg,
+ VALUE *nth, int *ry,
+ int *rw, int *rd, int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+ int r;
+
+ if (style == 0) {
+ int jd;
+
+ r = c_valid_weeknum_p(FIX2INT(y), w, d, f, sg, rw, rd, &jd, ns);
+ if (!r)
+ return 0;
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ r = c_valid_weeknum_p(*ry, w, d, f, style, rw, rd, rjd, ns);
+ }
+ return r;
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static int
+valid_nth_kday_p(VALUE y, int m, int n, int k, double sg,
+ VALUE *nth, int *ry,
+ int *rm, int *rn, int *rk, int *rjd,
+ int *ns)
+{
+ double style = guess_style(y, sg);
+ int r;
+
+ if (style == 0) {
+ int jd;
+
+ r = c_valid_nth_kday_p(FIX2INT(y), m, n, k, sg, rm, rn, rk, &jd, ns);
+ if (!r)
+ return 0;
+ decode_jd(INT2FIX(jd), nth, rjd);
+ if (f_zero_p(*nth))
+ *ry = FIX2INT(y);
+ else {
+ VALUE nth2;
+ decode_year(y, *ns ? -1 : +1, &nth2, ry);
+ }
+ }
+ else {
+ decode_year(y, style, nth, ry);
+ r = c_valid_nth_kday_p(*ry, m, n, k, style, rm, rn, rk, rjd, ns);
+ }
+ return r;
+}
+#endif
+
+VALUE date_zone_to_diff(VALUE);
+
+static int
+offset_to_sec(VALUE vof, int *rof)
+{
+ int try_rational = 1;
+
+ again:
+ switch (TYPE(vof)) {
+ case T_FIXNUM:
+ {
+ long n;
+
+ n = FIX2LONG(vof);
+ if (n != -1 && n != 0 && n != 1)
+ return 0;
+ *rof = (int)n * DAY_IN_SECONDS;
+ return 1;
+ }
+ case T_FLOAT:
+ {
+ double n;
+
+ n = RFLOAT_VALUE(vof) * DAY_IN_SECONDS;
+ if (n < -DAY_IN_SECONDS || n > DAY_IN_SECONDS)
+ return 0;
+ *rof = (int)round(n);
+ if (*rof != n)
+ rb_warning("fraction of offset is ignored");
+ return 1;
+ }
+ default:
+ expect_numeric(vof);
+ vof = f_to_r(vof);
+ if (!k_rational_p(vof)) {
+ if (!try_rational) Check_Type(vof, T_RATIONAL);
+ try_rational = 0;
+ goto again;
+ }
+ /* fall through */
+ case T_RATIONAL:
+ {
+ VALUE vs, vn, vd;
+ long n;
+
+ vs = day_to_sec(vof);
+
+ if (!k_rational_p(vs)) {
+ vn = vs;
+ goto rounded;
+ }
+ vn = rb_rational_num(vs);
+ vd = rb_rational_den(vs);
+
+ if (FIXNUM_P(vn) && FIXNUM_P(vd) && (FIX2LONG(vd) == 1))
+ n = FIX2LONG(vn);
+ else {
+ vn = f_round(vs);
+ if (!f_eqeq_p(vn, vs))
+ rb_warning("fraction of offset is ignored");
+ rounded:
+ if (!FIXNUM_P(vn))
+ return 0;
+ n = FIX2LONG(vn);
+ if (n < -DAY_IN_SECONDS || n > DAY_IN_SECONDS)
+ return 0;
+ }
+ *rof = (int)n;
+ return 1;
+ }
+ case T_STRING:
+ {
+ VALUE vs = date_zone_to_diff(vof);
+ long n;
+
+ if (!FIXNUM_P(vs))
+ return 0;
+ n = FIX2LONG(vs);
+ if (n < -DAY_IN_SECONDS || n > DAY_IN_SECONDS)
+ return 0;
+ *rof = (int)n;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/* date */
+
+#define valid_sg(sg) \
+do {\
+ if (!c_valid_start_p(sg)) {\
+ sg = 0;\
+ rb_warning("invalid start is ignored");\
+ }\
+} while (0)
+
+static VALUE
+valid_jd_sub(int argc, VALUE *argv, VALUE klass, int need_jd)
+{
+ double sg = NUM2DBL(argv[1]);
+ valid_sg(sg);
+ return argv[0];
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+date_s__valid_jd_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vjd, vsg;
+ VALUE argv2[2];
+
+ rb_scan_args(argc, argv, "11", &vjd, &vsg);
+
+ argv2[0] = vjd;
+ if (argc < 2)
+ argv2[1] = DBL2NUM(GREGORIAN);
+ else
+ argv2[1] = vsg;
+
+ return valid_jd_sub(2, argv2, klass, 1);
+}
+#endif
+
+/*
+ * call-seq:
+ * Date.valid_jd?(jd, start = Date::ITALY) -> true
+ *
+ * Implemented for compatibility;
+ * returns +true+ unless +jd+ is invalid (i.e., not a Numeric).
+ *
+ * Date.valid_jd?(2451944) # => true
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.jd.
+ */
+static VALUE
+date_s_valid_jd_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vjd, vsg;
+ VALUE argv2[2];
+
+ rb_scan_args(argc, argv, "11", &vjd, &vsg);
+
+ RETURN_FALSE_UNLESS_NUMERIC(vjd);
+ argv2[0] = vjd;
+ if (argc < 2)
+ argv2[1] = INT2FIX(DEFAULT_SG);
+ else
+ argv2[1] = vsg;
+
+ if (NIL_P(valid_jd_sub(2, argv2, klass, 0)))
+ return Qfalse;
+ return Qtrue;
+}
+
+static VALUE
+valid_civil_sub(int argc, VALUE *argv, VALUE klass, int need_jd)
+{
+ VALUE nth, y;
+ int m, d, ry, rm, rd;
+ double sg;
+
+ y = argv[0];
+ m = NUM2INT(argv[1]);
+ d = NUM2INT(argv[2]);
+ sg = NUM2DBL(argv[3]);
+
+ valid_sg(sg);
+
+ if (!need_jd && (guess_style(y, sg) < 0)) {
+ if (!valid_gregorian_p(y, m, d,
+ &nth, &ry,
+ &rm, &rd))
+ return Qnil;
+ return INT2FIX(0); /* dummy */
+ }
+ else {
+ int rjd, ns;
+ VALUE rjd2;
+
+ if (!valid_civil_p(y, m, d, sg,
+ &nth, &ry,
+ &rm, &rd, &rjd,
+ &ns))
+ return Qnil;
+ if (!need_jd)
+ return INT2FIX(0); /* dummy */
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+ }
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+date_s__valid_civil_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vd, vsg;
+ VALUE argv2[4];
+
+ rb_scan_args(argc, argv, "31", &vy, &vm, &vd, &vsg);
+
+ argv2[0] = vy;
+ argv2[1] = vm;
+ argv2[2] = vd;
+ if (argc < 4)
+ argv2[3] = DBL2NUM(GREGORIAN);
+ else
+ argv2[3] = vsg;
+
+ return valid_civil_sub(4, argv2, klass, 1);
+}
+#endif
+
+/*
+ * call-seq:
+ * Date.valid_civil?(year, month, mday, start = Date::ITALY) -> true or false
+ *
+ * Returns +true+ if the arguments define a valid ordinal date,
+ * +false+ otherwise:
+ *
+ * Date.valid_date?(2001, 2, 3) # => true
+ * Date.valid_date?(2001, 2, 29) # => false
+ * Date.valid_date?(2001, 2, -1) # => true
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.jd, Date.new.
+ */
+static VALUE
+date_s_valid_civil_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vd, vsg;
+ VALUE argv2[4];
+
+ rb_scan_args(argc, argv, "31", &vy, &vm, &vd, &vsg);
+
+ RETURN_FALSE_UNLESS_NUMERIC(vy);
+ RETURN_FALSE_UNLESS_NUMERIC(vm);
+ RETURN_FALSE_UNLESS_NUMERIC(vd);
+ argv2[0] = vy;
+ argv2[1] = vm;
+ argv2[2] = vd;
+ if (argc < 4)
+ argv2[3] = INT2FIX(DEFAULT_SG);
+ else
+ argv2[3] = vsg;
+
+ if (NIL_P(valid_civil_sub(4, argv2, klass, 0)))
+ return Qfalse;
+ return Qtrue;
+}
+
+static VALUE
+valid_ordinal_sub(int argc, VALUE *argv, VALUE klass, int need_jd)
+{
+ VALUE nth, y;
+ int d, ry, rd;
+ double sg;
+
+ y = argv[0];
+ d = NUM2INT(argv[1]);
+ sg = NUM2DBL(argv[2]);
+
+ valid_sg(sg);
+
+ {
+ int rjd, ns;
+ VALUE rjd2;
+
+ if (!valid_ordinal_p(y, d, sg,
+ &nth, &ry,
+ &rd, &rjd,
+ &ns))
+ return Qnil;
+ if (!need_jd)
+ return INT2FIX(0); /* dummy */
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+ }
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+date_s__valid_ordinal_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vd, vsg;
+ VALUE argv2[3];
+
+ rb_scan_args(argc, argv, "21", &vy, &vd, &vsg);
+
+ argv2[0] = vy;
+ argv2[1] = vd;
+ if (argc < 3)
+ argv2[2] = DBL2NUM(GREGORIAN);
+ else
+ argv2[2] = vsg;
+
+ return valid_ordinal_sub(3, argv2, klass, 1);
+}
+#endif
+
+/*
+ * call-seq:
+ * Date.valid_ordinal?(year, yday, start = Date::ITALY) -> true or false
+ *
+ * Returns +true+ if the arguments define a valid ordinal date,
+ * +false+ otherwise:
+ *
+ * Date.valid_ordinal?(2001, 34) # => true
+ * Date.valid_ordinal?(2001, 366) # => false
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.jd, Date.ordinal.
+ */
+static VALUE
+date_s_valid_ordinal_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vd, vsg;
+ VALUE argv2[3];
+
+ rb_scan_args(argc, argv, "21", &vy, &vd, &vsg);
+
+ RETURN_FALSE_UNLESS_NUMERIC(vy);
+ RETURN_FALSE_UNLESS_NUMERIC(vd);
+ argv2[0] = vy;
+ argv2[1] = vd;
+ if (argc < 3)
+ argv2[2] = INT2FIX(DEFAULT_SG);
+ else
+ argv2[2] = vsg;
+
+ if (NIL_P(valid_ordinal_sub(3, argv2, klass, 0)))
+ return Qfalse;
+ return Qtrue;
+}
+
+static VALUE
+valid_commercial_sub(int argc, VALUE *argv, VALUE klass, int need_jd)
+{
+ VALUE nth, y;
+ int w, d, ry, rw, rd;
+ double sg;
+
+ y = argv[0];
+ w = NUM2INT(argv[1]);
+ d = NUM2INT(argv[2]);
+ sg = NUM2DBL(argv[3]);
+
+ valid_sg(sg);
+
+ {
+ int rjd, ns;
+ VALUE rjd2;
+
+ if (!valid_commercial_p(y, w, d, sg,
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ return Qnil;
+ if (!need_jd)
+ return INT2FIX(0); /* dummy */
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+ }
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+date_s__valid_commercial_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vsg;
+ VALUE argv2[4];
+
+ rb_scan_args(argc, argv, "31", &vy, &vw, &vd, &vsg);
+
+ argv2[0] = vy;
+ argv2[1] = vw;
+ argv2[2] = vd;
+ if (argc < 4)
+ argv2[3] = DBL2NUM(GREGORIAN);
+ else
+ argv2[3] = vsg;
+
+ return valid_commercial_sub(4, argv2, klass, 1);
+}
+#endif
+
+/*
+ * call-seq:
+ * Date.valid_commercial?(cwyear, cweek, cwday, start = Date::ITALY) -> true or false
+ *
+ * Returns +true+ if the arguments define a valid commercial date,
+ * +false+ otherwise:
+ *
+ * Date.valid_commercial?(2001, 5, 6) # => true
+ * Date.valid_commercial?(2001, 5, 8) # => false
+ *
+ * See Date.commercial.
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.jd, Date.commercial.
+ */
+static VALUE
+date_s_valid_commercial_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vsg;
+ VALUE argv2[4];
+
+ rb_scan_args(argc, argv, "31", &vy, &vw, &vd, &vsg);
+
+ RETURN_FALSE_UNLESS_NUMERIC(vy);
+ RETURN_FALSE_UNLESS_NUMERIC(vw);
+ RETURN_FALSE_UNLESS_NUMERIC(vd);
+ argv2[0] = vy;
+ argv2[1] = vw;
+ argv2[2] = vd;
+ if (argc < 4)
+ argv2[3] = INT2FIX(DEFAULT_SG);
+ else
+ argv2[3] = vsg;
+
+ if (NIL_P(valid_commercial_sub(4, argv2, klass, 0)))
+ return Qfalse;
+ return Qtrue;
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+valid_weeknum_sub(int argc, VALUE *argv, VALUE klass, int need_jd)
+{
+ VALUE nth, y;
+ int w, d, f, ry, rw, rd;
+ double sg;
+
+ y = argv[0];
+ w = NUM2INT(argv[1]);
+ d = NUM2INT(argv[2]);
+ f = NUM2INT(argv[3]);
+ sg = NUM2DBL(argv[4]);
+
+ valid_sg(sg);
+
+ {
+ int rjd, ns;
+ VALUE rjd2;
+
+ if (!valid_weeknum_p(y, w, d, f, sg,
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ return Qnil;
+ if (!need_jd)
+ return INT2FIX(0); /* dummy */
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+ }
+}
+
+/* :nodoc: */
+static VALUE
+date_s__valid_weeknum_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vf, vsg;
+ VALUE argv2[5];
+
+ rb_scan_args(argc, argv, "41", &vy, &vw, &vd, &vf, &vsg);
+
+ argv2[0] = vy;
+ argv2[1] = vw;
+ argv2[2] = vd;
+ argv2[3] = vf;
+ if (argc < 5)
+ argv2[4] = DBL2NUM(GREGORIAN);
+ else
+ argv2[4] = vsg;
+
+ return valid_weeknum_sub(5, argv2, klass, 1);
+}
+
+/* :nodoc: */
+static VALUE
+date_s_valid_weeknum_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vf, vsg;
+ VALUE argv2[5];
+
+ rb_scan_args(argc, argv, "41", &vy, &vw, &vd, &vf, &vsg);
+
+ argv2[0] = vy;
+ argv2[1] = vw;
+ argv2[2] = vd;
+ argv2[3] = vf;
+ if (argc < 5)
+ argv2[4] = INT2FIX(DEFAULT_SG);
+ else
+ argv2[4] = vsg;
+
+ if (NIL_P(valid_weeknum_sub(5, argv2, klass, 0)))
+ return Qfalse;
+ return Qtrue;
+}
+
+static VALUE
+valid_nth_kday_sub(int argc, VALUE *argv, VALUE klass, int need_jd)
+{
+ VALUE nth, y;
+ int m, n, k, ry, rm, rn, rk;
+ double sg;
+
+ y = argv[0];
+ m = NUM2INT(argv[1]);
+ n = NUM2INT(argv[2]);
+ k = NUM2INT(argv[3]);
+ sg = NUM2DBL(argv[4]);
+
+ {
+ int rjd, ns;
+ VALUE rjd2;
+
+ if (!valid_nth_kday_p(y, m, n, k, sg,
+ &nth, &ry,
+ &rm, &rn, &rk, &rjd,
+ &ns))
+ return Qnil;
+ if (!need_jd)
+ return INT2FIX(0); /* dummy */
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+ }
+}
+
+/* :nodoc: */
+static VALUE
+date_s__valid_nth_kday_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vn, vk, vsg;
+ VALUE argv2[5];
+
+ rb_scan_args(argc, argv, "41", &vy, &vm, &vn, &vk, &vsg);
+
+ argv2[0] = vy;
+ argv2[1] = vm;
+ argv2[2] = vn;
+ argv2[3] = vk;
+ if (argc < 5)
+ argv2[4] = DBL2NUM(GREGORIAN);
+ else
+ argv2[4] = vsg;
+
+ return valid_nth_kday_sub(5, argv2, klass, 1);
+}
+
+/* :nodoc: */
+static VALUE
+date_s_valid_nth_kday_p(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vn, vk, vsg;
+ VALUE argv2[5];
+
+ rb_scan_args(argc, argv, "41", &vy, &vm, &vn, &vk, &vsg);
+
+ argv2[0] = vy;
+ argv2[1] = vm;
+ argv2[2] = vn;
+ argv2[3] = vk;
+ if (argc < 5)
+ argv2[4] = INT2FIX(DEFAULT_SG);
+ else
+ argv2[4] = vsg;
+
+ if (NIL_P(valid_nth_kday_sub(5, argv2, klass, 0)))
+ return Qfalse;
+ return Qtrue;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_zone_to_diff(VALUE klass, VALUE str)
+{
+ return date_zone_to_diff(str);
+}
+#endif
+
+/*
+ * call-seq:
+ * Date.julian_leap?(year) -> true or false
+ *
+ * Returns +true+ if the given year is a leap year
+ * in the {proleptic Julian calendar}[https://en.wikipedia.org/wiki/Proleptic_Julian_calendar], +false+ otherwise:
+ *
+ * Date.julian_leap?(1900) # => true
+ * Date.julian_leap?(1901) # => false
+ *
+ * Related: Date.gregorian_leap?.
+ */
+static VALUE
+date_s_julian_leap_p(VALUE klass, VALUE y)
+{
+ VALUE nth;
+ int ry;
+
+ check_numeric(y, "year");
+ decode_year(y, +1, &nth, &ry);
+ return f_boolcast(c_julian_leap_p(ry));
+}
+
+/*
+ * call-seq:
+ * Date.gregorian_leap?(year) -> true or false
+ *
+ * Returns +true+ if the given year is a leap year
+ * in the {proleptic Gregorian calendar}[https://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar], +false+ otherwise:
+ *
+ * Date.gregorian_leap?(2000) # => true
+ * Date.gregorian_leap?(2001) # => false
+ *
+ * Related: Date.julian_leap?.
+ */
+static VALUE
+date_s_gregorian_leap_p(VALUE klass, VALUE y)
+{
+ VALUE nth;
+ int ry;
+
+ check_numeric(y, "year");
+ decode_year(y, -1, &nth, &ry);
+ return f_boolcast(c_gregorian_leap_p(ry));
+}
+
+static void
+d_lite_gc_mark(void *ptr)
+{
+ union DateData *dat = ptr;
+ if (simple_dat_p(dat))
+ rb_gc_mark(dat->s.nth);
+ else {
+ rb_gc_mark(dat->c.nth);
+ rb_gc_mark(dat->c.sf);
+ }
+}
+
+static size_t
+d_lite_memsize(const void *ptr)
+{
+ const union DateData *dat = ptr;
+ return complex_dat_p(dat) ? sizeof(struct ComplexDateData) : sizeof(struct SimpleDateData);
+}
+
+#ifndef HAVE_RB_EXT_RACTOR_SAFE
+# define RUBY_TYPED_FROZEN_SHAREABLE 0
+#endif
+
+static const rb_data_type_t d_lite_type = {
+ "Date",
+ {d_lite_gc_mark, RUBY_TYPED_DEFAULT_FREE, d_lite_memsize,},
+ 0, 0,
+ RUBY_TYPED_FREE_IMMEDIATELY|RUBY_TYPED_WB_PROTECTED|RUBY_TYPED_FROZEN_SHAREABLE,
+};
+
+inline static VALUE
+d_simple_new_internal(VALUE klass,
+ VALUE nth, int jd,
+ double sg,
+ int y, int m, int d,
+ unsigned flags)
+{
+ struct SimpleDateData *dat;
+ VALUE obj;
+
+ obj = TypedData_Make_Struct(klass, struct SimpleDateData,
+ &d_lite_type, dat);
+ set_to_simple(obj, dat, nth, jd, sg, y, m, d, flags);
+
+ assert(have_jd_p(dat) || have_civil_p(dat));
+
+ return obj;
+}
+
+inline static VALUE
+d_complex_new_internal(VALUE klass,
+ VALUE nth, int jd,
+ int df, VALUE sf,
+ int of, double sg,
+ int y, int m, int d,
+ int h, int min, int s,
+ unsigned flags)
+{
+ struct ComplexDateData *dat;
+ VALUE obj;
+
+ obj = TypedData_Make_Struct(klass, struct ComplexDateData,
+ &d_lite_type, dat);
+ set_to_complex(obj, dat, nth, jd, df, sf, of, sg,
+ y, m, d, h, min, s, flags);
+
+ assert(have_jd_p(dat) || have_civil_p(dat));
+ assert(have_df_p(dat) || have_time_p(dat));
+
+ return obj;
+}
+
+static VALUE
+d_lite_s_alloc_simple(VALUE klass)
+{
+ return d_simple_new_internal(klass,
+ INT2FIX(0), 0,
+ DEFAULT_SG,
+ 0, 0, 0,
+ HAVE_JD);
+}
+
+static VALUE
+d_lite_s_alloc_complex(VALUE klass)
+{
+ return d_complex_new_internal(klass,
+ INT2FIX(0), 0,
+ 0, INT2FIX(0),
+ 0, DEFAULT_SG,
+ 0, 0, 0,
+ 0, 0, 0,
+ HAVE_JD | HAVE_DF);
+}
+
+static VALUE
+d_lite_s_alloc(VALUE klass)
+{
+ return d_lite_s_alloc_complex(klass);
+}
+
+static void
+old_to_new(VALUE ajd, VALUE of, VALUE sg,
+ VALUE *rnth, int *rjd, int *rdf, VALUE *rsf,
+ int *rof, double *rsg)
+{
+ VALUE jd, df, sf, of2, t;
+
+ decode_day(f_add(ajd, half_days_in_day),
+ &jd, &df, &sf);
+ t = day_to_sec(of);
+ of2 = f_round(t);
+
+ if (!f_eqeq_p(of2, t))
+ rb_warning("fraction of offset is ignored");
+
+ decode_jd(jd, rnth, rjd);
+
+ *rdf = NUM2INT(df);
+ *rsf = sf;
+ *rof = NUM2INT(of2);
+ *rsg = NUM2DBL(sg);
+
+ if (*rdf < 0 || *rdf >= DAY_IN_SECONDS)
+ rb_raise(eDateError, "invalid day fraction");
+
+ if (f_lt_p(*rsf, INT2FIX(0)) ||
+ f_ge_p(*rsf, INT2FIX(SECOND_IN_NANOSECONDS)))
+
+ if (*rof < -DAY_IN_SECONDS || *rof > DAY_IN_SECONDS) {
+ *rof = 0;
+ rb_warning("invalid offset is ignored");
+ }
+
+ if (!c_valid_start_p(*rsg)) {
+ *rsg = DEFAULT_SG;
+ rb_warning("invalid start is ignored");
+ }
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+date_s_new_bang(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE ajd, of, sg, nth, sf;
+ int jd, df, rof;
+ double rsg;
+
+ rb_scan_args(argc, argv, "03", &ajd, &of, &sg);
+
+ switch (argc) {
+ case 0:
+ ajd = INT2FIX(0);
+ case 1:
+ of = INT2FIX(0);
+ case 2:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ old_to_new(ajd, of, sg,
+ &nth, &jd, &df, &sf, &rof, &rsg);
+
+ if (!df && f_zero_p(sf) && !rof)
+ return d_simple_new_internal(klass,
+ nth, jd,
+ rsg,
+ 0, 0, 0,
+ HAVE_JD);
+ else
+ return d_complex_new_internal(klass,
+ nth, jd,
+ df, sf,
+ rof, rsg,
+ 0, 0, 0,
+ 0, 0, 0,
+ HAVE_JD | HAVE_DF);
+}
+#endif
+
+inline static int
+wholenum_p(VALUE x)
+{
+ if (FIXNUM_P(x))
+ return 1;
+ switch (TYPE(x)) {
+ case T_BIGNUM:
+ return 1;
+ case T_FLOAT:
+ {
+ double d = RFLOAT_VALUE(x);
+ return round(d) == d;
+ }
+ break;
+ case T_RATIONAL:
+ {
+ VALUE den = rb_rational_den(x);
+ return FIXNUM_P(den) && FIX2LONG(den) == 1;
+ }
+ break;
+ }
+ return 0;
+}
+
+inline static VALUE
+to_integer(VALUE x)
+{
+ if (RB_INTEGER_TYPE_P(x))
+ return x;
+ return f_to_i(x);
+}
+
+inline static VALUE
+d_trunc(VALUE d, VALUE *fr)
+{
+ VALUE rd;
+
+ if (wholenum_p(d)) {
+ rd = to_integer(d);
+ *fr = INT2FIX(0);
+ }
+ else {
+ rd = f_idiv(d, INT2FIX(1));
+ *fr = f_mod(d, INT2FIX(1));
+ }
+ return rd;
+}
+
+#define jd_trunc d_trunc
+#define k_trunc d_trunc
+
+inline static VALUE
+h_trunc(VALUE h, VALUE *fr)
+{
+ VALUE rh;
+
+ if (wholenum_p(h)) {
+ rh = to_integer(h);
+ *fr = INT2FIX(0);
+ }
+ else {
+ rh = f_idiv(h, INT2FIX(1));
+ *fr = f_mod(h, INT2FIX(1));
+ *fr = f_quo(*fr, INT2FIX(24));
+ }
+ return rh;
+}
+
+inline static VALUE
+min_trunc(VALUE min, VALUE *fr)
+{
+ VALUE rmin;
+
+ if (wholenum_p(min)) {
+ rmin = to_integer(min);
+ *fr = INT2FIX(0);
+ }
+ else {
+ rmin = f_idiv(min, INT2FIX(1));
+ *fr = f_mod(min, INT2FIX(1));
+ *fr = f_quo(*fr, INT2FIX(1440));
+ }
+ return rmin;
+}
+
+inline static VALUE
+s_trunc(VALUE s, VALUE *fr)
+{
+ VALUE rs;
+
+ if (wholenum_p(s)) {
+ rs = to_integer(s);
+ *fr = INT2FIX(0);
+ }
+ else {
+ rs = f_idiv(s, INT2FIX(1));
+ *fr = f_mod(s, INT2FIX(1));
+ *fr = f_quo(*fr, INT2FIX(86400));
+ }
+ return rs;
+}
+
+#define num2num_with_frac(s,n) \
+do {\
+ s = s##_trunc(v##s, &fr);\
+ if (f_nonzero_p(fr)) {\
+ if (argc > n)\
+ rb_raise(eDateError, "invalid fraction");\
+ fr2 = fr;\
+ }\
+} while (0)
+
+#define num2int_with_frac(s,n) \
+do {\
+ s = NUM2INT(s##_trunc(v##s, &fr));\
+ if (f_nonzero_p(fr)) {\
+ if (argc > n)\
+ rb_raise(eDateError, "invalid fraction");\
+ fr2 = fr;\
+ }\
+} while (0)
+
+#define canon24oc() \
+do {\
+ if (rh == 24) {\
+ rh = 0;\
+ fr2 = f_add(fr2, INT2FIX(1));\
+ }\
+} while (0)
+
+#define add_frac() \
+do {\
+ if (f_nonzero_p(fr2))\
+ ret = d_lite_plus(ret, fr2);\
+} while (0)
+
+#define val2sg(vsg,dsg) \
+do {\
+ dsg = NUM2DBL(vsg);\
+ if (!c_valid_start_p(dsg)) {\
+ dsg = DEFAULT_SG;\
+ rb_warning("invalid start is ignored");\
+ }\
+} while (0)
+
+static VALUE d_lite_plus(VALUE, VALUE);
+
+/*
+ * call-seq:
+ * Date.jd(jd = 0, start = Date::ITALY) -> date
+ *
+ * Returns a new \Date object formed from the arguments:
+ *
+ * Date.jd(2451944).to_s # => "2001-02-03"
+ * Date.jd(2451945).to_s # => "2001-02-04"
+ * Date.jd(0).to_s # => "-4712-01-01"
+ *
+ * The returned date is:
+ *
+ * - Gregorian, if the argument is greater than or equal to +start+:
+ *
+ * Date::ITALY # => 2299161
+ * Date.jd(Date::ITALY).gregorian? # => true
+ * Date.jd(Date::ITALY + 1).gregorian? # => true
+ *
+ * - Julian, otherwise
+ *
+ * Date.jd(Date::ITALY - 1).julian? # => true
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.new.
+ */
+static VALUE
+date_s_jd(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vjd, vsg, jd, fr, fr2, ret;
+ double sg;
+
+ rb_scan_args(argc, argv, "02", &vjd, &vsg);
+
+ jd = INT2FIX(0);
+ fr2 = INT2FIX(0);
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 2:
+ val2sg(vsg, sg);
+ case 1:
+ check_numeric(vjd, "jd");
+ num2num_with_frac(jd, positive_inf);
+ }
+
+ {
+ VALUE nth;
+ int rjd;
+
+ decode_jd(jd, &nth, &rjd);
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+
+/*
+ * call-seq:
+ * Date.ordinal(year = -4712, yday = 1, start = Date::ITALY) -> date
+ *
+ * Returns a new \Date object formed fom the arguments.
+ *
+ * With no arguments, returns the date for January 1, -4712:
+ *
+ * Date.ordinal.to_s # => "-4712-01-01"
+ *
+ * With argument +year+, returns the date for January 1 of that year:
+ *
+ * Date.ordinal(2001).to_s # => "2001-01-01"
+ * Date.ordinal(-2001).to_s # => "-2001-01-01"
+ *
+ * With positive argument +yday+ == +n+,
+ * returns the date for the +nth+ day of the given year:
+ *
+ * Date.ordinal(2001, 14).to_s # => "2001-01-14"
+ *
+ * With negative argument +yday+, counts backward from the end of the year:
+ *
+ * Date.ordinal(2001, -14).to_s # => "2001-12-18"
+ *
+ * Raises an exception if +yday+ is zero or out of range.
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.jd, Date.new.
+ */
+static VALUE
+date_s_ordinal(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vd, vsg, y, fr, fr2, ret;
+ int d;
+ double sg;
+
+ rb_scan_args(argc, argv, "03", &vy, &vd, &vsg);
+
+ y = INT2FIX(-4712);
+ d = 1;
+ fr2 = INT2FIX(0);
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 3:
+ val2sg(vsg, sg);
+ case 2:
+ check_numeric(vd, "yday");
+ num2int_with_frac(d, positive_inf);
+ case 1:
+ check_numeric(vy, "year");
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rd, rjd, ns;
+
+ if (!valid_ordinal_p(y, d, sg,
+ &nth, &ry,
+ &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+
+/*
+ * Same as Date.new.
+ */
+static VALUE
+date_s_civil(int argc, VALUE *argv, VALUE klass)
+{
+ return date_initialize(argc, argv, d_lite_s_alloc_simple(klass));
+}
+
+/*
+ * call-seq:
+ * Date.new(year = -4712, month = 1, mday = 1, start = Date::ITALY) -> date
+ *
+ * Returns a new \Date object constructed from the given arguments:
+ *
+ * Date.new(2022).to_s # => "2022-01-01"
+ * Date.new(2022, 2).to_s # => "2022-02-01"
+ * Date.new(2022, 2, 4).to_s # => "2022-02-04"
+ *
+ * Argument +month+ should be in range (1..12) or range (-12..-1);
+ * when the argument is negative, counts backward from the end of the year:
+ *
+ * Date.new(2022, -11, 4).to_s # => "2022-02-04"
+ *
+ * Argument +mday+ should be in range (1..n) or range (-n..-1)
+ * where +n+ is the number of days in the month;
+ * when the argument is negative, counts backward from the end of the month.
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.jd.
+ */
+static VALUE
+date_initialize(int argc, VALUE *argv, VALUE self)
+{
+ VALUE vy, vm, vd, vsg, y, fr, fr2, ret;
+ int m, d;
+ double sg;
+ struct SimpleDateData *dat = rb_check_typeddata(self, &d_lite_type);
+
+ if (!simple_dat_p(dat)) {
+ rb_raise(rb_eTypeError, "Date expected");
+ }
+
+ rb_scan_args(argc, argv, "04", &vy, &vm, &vd, &vsg);
+
+ y = INT2FIX(-4712);
+ m = 1;
+ d = 1;
+ fr2 = INT2FIX(0);
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 4:
+ val2sg(vsg, sg);
+ case 3:
+ check_numeric(vd, "day");
+ num2int_with_frac(d, positive_inf);
+ case 2:
+ check_numeric(vm, "month");
+ m = NUM2INT(vm);
+ case 1:
+ check_numeric(vy, "year");
+ y = vy;
+ }
+
+ if (guess_style(y, sg) < 0) {
+ VALUE nth;
+ int ry, rm, rd;
+
+ if (!valid_gregorian_p(y, m, d,
+ &nth, &ry,
+ &rm, &rd))
+ rb_raise(eDateError, "invalid date");
+
+ set_to_simple(self, dat, nth, 0, sg, ry, rm, rd, HAVE_CIVIL);
+ }
+ else {
+ VALUE nth;
+ int ry, rm, rd, rjd, ns;
+
+ if (!valid_civil_p(y, m, d, sg,
+ &nth, &ry,
+ &rm, &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+
+ set_to_simple(self, dat, nth, rjd, sg, ry, rm, rd, HAVE_JD | HAVE_CIVIL);
+ }
+ ret = self;
+ add_frac();
+ return ret;
+}
+
+/*
+ * call-seq:
+ * Date.commercial(cwyear = -4712, cweek = 1, cwday = 1, start = Date::ITALY) -> date
+ *
+ * Returns a new \Date object constructed from the arguments.
+ *
+ * Argument +cwyear+ gives the year, and should be an integer.
+ *
+ * Argument +cweek+ gives the index of the week within the year,
+ * and should be in range (1..53) or (-53..-1);
+ * in some years, 53 or -53 will be out-of-range;
+ * if negative, counts backward from the end of the year:
+ *
+ * Date.commercial(2022, 1, 1).to_s # => "2022-01-03"
+ * Date.commercial(2022, 52, 1).to_s # => "2022-12-26"
+ *
+ * Argument +cwday+ gives the indes of the weekday within the week,
+ * and should be in range (1..7) or (-7..-1);
+ * 1 or -7 is Monday;
+ * if negative, counts backward from the end of the week:
+ *
+ * Date.commercial(2022, 1, 1).to_s # => "2022-01-03"
+ * Date.commercial(2022, 1, -7).to_s # => "2022-01-03"
+ *
+ * When +cweek+ is 1:
+ *
+ * - If January 1 is a Friday, Saturday, or Sunday,
+ * the first week begins in the week after:
+ *
+ * Date::ABBR_DAYNAMES[Date.new(2023, 1, 1).wday] # => "Sun"
+ * Date.commercial(2023, 1, 1).to_s # => "2023-01-02"
+ Date.commercial(2023, 1, 7).to_s # => "2023-01-08"
+ *
+ * - Otherwise, the first week is the week of January 1,
+ * which may mean some of the days fall on the year before:
+ *
+ * Date::ABBR_DAYNAMES[Date.new(2020, 1, 1).wday] # => "Wed"
+ * Date.commercial(2020, 1, 1).to_s # => "2019-12-30"
+ Date.commercial(2020, 1, 7).to_s # => "2020-01-05"
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * Related: Date.jd, Date.new, Date.ordinal.
+ */
+static VALUE
+date_s_commercial(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vsg, y, fr, fr2, ret;
+ int w, d;
+ double sg;
+
+ rb_scan_args(argc, argv, "04", &vy, &vw, &vd, &vsg);
+
+ y = INT2FIX(-4712);
+ w = 1;
+ d = 1;
+ fr2 = INT2FIX(0);
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 4:
+ val2sg(vsg, sg);
+ case 3:
+ check_numeric(vd, "cwday");
+ num2int_with_frac(d, positive_inf);
+ case 2:
+ check_numeric(vw, "cweek");
+ w = NUM2INT(vw);
+ case 1:
+ check_numeric(vy, "year");
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rw, rd, rjd, ns;
+
+ if (!valid_commercial_p(y, w, d, sg,
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+date_s_weeknum(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vf, vsg, y, fr, fr2, ret;
+ int w, d, f;
+ double sg;
+
+ rb_scan_args(argc, argv, "05", &vy, &vw, &vd, &vf, &vsg);
+
+ y = INT2FIX(-4712);
+ w = 0;
+ d = 1;
+ f = 0;
+ fr2 = INT2FIX(0);
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 5:
+ val2sg(vsg, sg);
+ case 4:
+ f = NUM2INT(vf);
+ case 3:
+ num2int_with_frac(d, positive_inf);
+ case 2:
+ w = NUM2INT(vw);
+ case 1:
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rw, rd, rjd, ns;
+
+ if (!valid_weeknum_p(y, w, d, f, sg,
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_nth_kday(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vn, vk, vsg, y, fr, fr2, ret;
+ int m, n, k;
+ double sg;
+
+ rb_scan_args(argc, argv, "05", &vy, &vm, &vn, &vk, &vsg);
+
+ y = INT2FIX(-4712);
+ m = 1;
+ n = 1;
+ k = 1;
+ fr2 = INT2FIX(0);
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 5:
+ val2sg(vsg, sg);
+ case 4:
+ num2int_with_frac(k, positive_inf);
+ case 3:
+ n = NUM2INT(vn);
+ case 2:
+ m = NUM2INT(vm);
+ case 1:
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rm, rn, rk, rjd, ns;
+
+ if (!valid_nth_kday_p(y, m, n, k, sg,
+ &nth, &ry,
+ &rm, &rn, &rk, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+#endif
+
+#if !defined(HAVE_GMTIME_R)
+static struct tm*
+gmtime_r(const time_t *t, struct tm *tm)
+{
+ auto struct tm *tmp = gmtime(t);
+ if (tmp)
+ *tm = *tmp;
+ return tmp;
+}
+
+static struct tm*
+localtime_r(const time_t *t, struct tm *tm)
+{
+ auto struct tm *tmp = localtime(t);
+ if (tmp)
+ *tm = *tmp;
+ return tmp;
+}
+#endif
+
+static void set_sg(union DateData *, double);
+
+/*
+ * call-seq:
+ * Date.today(start = Date::ITALY) -> date
+ *
+ * Returns a new \Date object constructed from the present date:
+ *
+ * Date.today.to_s # => "2022-07-06"
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ */
+static VALUE
+date_s_today(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vsg, nth, ret;
+ double sg;
+ time_t t;
+ struct tm tm;
+ int y, ry, m, d;
+
+ rb_scan_args(argc, argv, "01", &vsg);
+
+ if (argc < 1)
+ sg = DEFAULT_SG;
+ else
+ val2sg(vsg, sg);
+
+ if (time(&t) == -1)
+ rb_sys_fail("time");
+ tzset();
+ if (!localtime_r(&t, &tm))
+ rb_sys_fail("localtime");
+
+ y = tm.tm_year + 1900;
+ m = tm.tm_mon + 1;
+ d = tm.tm_mday;
+
+ decode_year(INT2FIX(y), -1, &nth, &ry);
+
+ ret = d_simple_new_internal(klass,
+ nth, 0,
+ GREGORIAN,
+ ry, m, d,
+ HAVE_CIVIL);
+ {
+ get_d1(ret);
+ set_sg(dat, sg);
+ }
+ return ret;
+}
+
+#define set_hash0(k,v) rb_hash_aset(hash, k, v)
+#define ref_hash0(k) rb_hash_aref(hash, k)
+#define del_hash0(k) rb_hash_delete(hash, k)
+
+#define sym(x) ID2SYM(rb_intern(x""))
+
+#define set_hash(k,v) set_hash0(sym(k), v)
+#define ref_hash(k) ref_hash0(sym(k))
+#define del_hash(k) del_hash0(sym(k))
+
+static VALUE
+rt_rewrite_frags(VALUE hash)
+{
+ VALUE seconds;
+
+ seconds = del_hash("seconds");
+ if (!NIL_P(seconds)) {
+ VALUE offset, d, h, min, s, fr;
+
+ offset = ref_hash("offset");
+ if (!NIL_P(offset))
+ seconds = f_add(seconds, offset);
+
+ d = f_idiv(seconds, INT2FIX(DAY_IN_SECONDS));
+ fr = f_mod(seconds, INT2FIX(DAY_IN_SECONDS));
+
+ h = f_idiv(fr, INT2FIX(HOUR_IN_SECONDS));
+ fr = f_mod(fr, INT2FIX(HOUR_IN_SECONDS));
+
+ min = f_idiv(fr, INT2FIX(MINUTE_IN_SECONDS));
+ fr = f_mod(fr, INT2FIX(MINUTE_IN_SECONDS));
+
+ s = f_idiv(fr, INT2FIX(1));
+ fr = f_mod(fr, INT2FIX(1));
+
+ set_hash("jd", f_add(UNIX_EPOCH_IN_CJD, d));
+ set_hash("hour", h);
+ set_hash("min", min);
+ set_hash("sec", s);
+ set_hash("sec_fraction", fr);
+ }
+ return hash;
+}
+
+static VALUE d_lite_year(VALUE);
+static VALUE d_lite_wday(VALUE);
+static VALUE d_lite_jd(VALUE);
+
+static VALUE
+rt_complete_frags(VALUE klass, VALUE hash)
+{
+ static VALUE tab = Qnil;
+ long e;
+ VALUE k, a, d;
+
+ if (NIL_P(tab)) {
+ tab = f_frozen_ary(11,
+ f_frozen_ary(2,
+ sym("time"),
+ f_frozen_ary(3,
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ Qnil,
+ f_frozen_ary(1,
+ sym("jd"))),
+ f_frozen_ary(2,
+ sym("ordinal"),
+ f_frozen_ary(5,
+ sym("year"),
+ sym("yday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ sym("civil"),
+ f_frozen_ary(6,
+ sym("year"),
+ sym("mon"),
+ sym("mday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ sym("commercial"),
+ f_frozen_ary(6,
+ sym("cwyear"),
+ sym("cweek"),
+ sym("cwday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ sym("wday"),
+ f_frozen_ary(4,
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ sym("wnum0"),
+ f_frozen_ary(6,
+ sym("year"),
+ sym("wnum0"),
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ sym("wnum1"),
+ f_frozen_ary(6,
+ sym("year"),
+ sym("wnum1"),
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ Qnil,
+ f_frozen_ary(6,
+ sym("cwyear"),
+ sym("cweek"),
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ Qnil,
+ f_frozen_ary(6,
+ sym("year"),
+ sym("wnum0"),
+ sym("cwday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ f_frozen_ary(2,
+ Qnil,
+ f_frozen_ary(6,
+ sym("year"),
+ sym("wnum1"),
+ sym("cwday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))));
+ rb_gc_register_mark_object(tab);
+ }
+
+ k = a = Qnil;
+
+ {
+ long i, eno = 0;
+ VALUE t = Qnil;
+
+ e = 0;
+ for (i = 0; i < RARRAY_LEN(tab); i++) {
+ VALUE x, a;
+
+ x = RARRAY_AREF(tab, i);
+ a = RARRAY_AREF(x, 1);
+
+ {
+ long j, n = 0;
+
+ for (j = 0; j < RARRAY_LEN(a); j++)
+ if (!NIL_P(ref_hash0(RARRAY_AREF(a, j))))
+ n++;
+ if (n > eno) {
+ eno = n;
+ t = x;
+ }
+ }
+ }
+ if (eno > 0) {
+ k = RARRAY_AREF(t, 0);
+ a = RARRAY_AREF(t, 1);
+ }
+ e = eno;
+ }
+
+ d = Qnil;
+
+ if (!NIL_P(k) && (RARRAY_LEN(a) > e)) {
+ if (k == sym("ordinal")) {
+ if (NIL_P(ref_hash("year"))) {
+ if (NIL_P(d))
+ d = date_s_today(0, (VALUE *)0, cDate);
+ set_hash("year", d_lite_year(d));
+ }
+ if (NIL_P(ref_hash("yday")))
+ set_hash("yday", INT2FIX(1));
+ }
+ else if (k == sym("civil")) {
+ long i;
+
+ for (i = 0; i < RARRAY_LEN(a); i++) {
+ VALUE e = RARRAY_AREF(a, i);
+
+ if (!NIL_P(ref_hash0(e)))
+ break;
+ if (NIL_P(d))
+ d = date_s_today(0, (VALUE *)0, cDate);
+ set_hash0(e, rb_funcall(d, SYM2ID(e), 0));
+ }
+ if (NIL_P(ref_hash("mon")))
+ set_hash("mon", INT2FIX(1));
+ if (NIL_P(ref_hash("mday")))
+ set_hash("mday", INT2FIX(1));
+ }
+ else if (k == sym("commercial")) {
+ long i;
+
+ for (i = 0; i < RARRAY_LEN(a); i++) {
+ VALUE e = RARRAY_AREF(a, i);
+
+ if (!NIL_P(ref_hash0(e)))
+ break;
+ if (NIL_P(d))
+ d = date_s_today(0, (VALUE *)0, cDate);
+ set_hash0(e, rb_funcall(d, SYM2ID(e), 0));
+ }
+ if (NIL_P(ref_hash("cweek")))
+ set_hash("cweek", INT2FIX(1));
+ if (NIL_P(ref_hash("cwday")))
+ set_hash("cwday", INT2FIX(1));
+ }
+ else if (k == sym("wday")) {
+ if (NIL_P(d))
+ d = date_s_today(0, (VALUE *)0, cDate);
+ set_hash("jd", d_lite_jd(f_add(f_sub(d,
+ d_lite_wday(d)),
+ ref_hash("wday"))));
+ }
+ else if (k == sym("wnum0")) {
+ long i;
+
+ for (i = 0; i < RARRAY_LEN(a); i++) {
+ VALUE e = RARRAY_AREF(a, i);
+
+ if (!NIL_P(ref_hash0(e)))
+ break;
+ if (NIL_P(d))
+ d = date_s_today(0, (VALUE *)0, cDate);
+ set_hash0(e, rb_funcall(d, SYM2ID(e), 0));
+ }
+ if (NIL_P(ref_hash("wnum0")))
+ set_hash("wnum0", INT2FIX(0));
+ if (NIL_P(ref_hash("wday")))
+ set_hash("wday", INT2FIX(0));
+ }
+ else if (k == sym("wnum1")) {
+ long i;
+
+ for (i = 0; i < RARRAY_LEN(a); i++) {
+ VALUE e = RARRAY_AREF(a, i);
+
+ if (!NIL_P(ref_hash0(e)))
+ break;
+ if (NIL_P(d))
+ d = date_s_today(0, (VALUE *)0, cDate);
+ set_hash0(e, rb_funcall(d, SYM2ID(e), 0));
+ }
+ if (NIL_P(ref_hash("wnum1")))
+ set_hash("wnum1", INT2FIX(0));
+ if (NIL_P(ref_hash("wday")))
+ set_hash("wday", INT2FIX(1));
+ }
+ }
+
+ if (k == sym("time")) {
+ if (f_le_p(klass, cDateTime)) {
+ if (NIL_P(d))
+ d = date_s_today(0, (VALUE *)0, cDate);
+ if (NIL_P(ref_hash("jd")))
+ set_hash("jd", d_lite_jd(d));
+ }
+ }
+
+ if (NIL_P(ref_hash("hour")))
+ set_hash("hour", INT2FIX(0));
+ if (NIL_P(ref_hash("min")))
+ set_hash("min", INT2FIX(0));
+ if (NIL_P(ref_hash("sec")))
+ set_hash("sec", INT2FIX(0));
+ else if (f_gt_p(ref_hash("sec"), INT2FIX(59)))
+ set_hash("sec", INT2FIX(59));
+
+ return hash;
+}
+
+static VALUE
+rt__valid_jd_p(VALUE jd, VALUE sg)
+{
+ return jd;
+}
+
+static VALUE
+rt__valid_ordinal_p(VALUE y, VALUE d, VALUE sg)
+{
+ VALUE nth, rjd2;
+ int ry, rd, rjd, ns;
+
+ if (!valid_ordinal_p(y, NUM2INT(d), NUM2DBL(sg),
+ &nth, &ry,
+ &rd, &rjd,
+ &ns))
+ return Qnil;
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+}
+
+static VALUE
+rt__valid_civil_p(VALUE y, VALUE m, VALUE d, VALUE sg)
+{
+ VALUE nth, rjd2;
+ int ry, rm, rd, rjd, ns;
+
+ if (!valid_civil_p(y, NUM2INT(m), NUM2INT(d), NUM2DBL(sg),
+ &nth, &ry,
+ &rm, &rd, &rjd,
+ &ns))
+ return Qnil;
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+}
+
+static VALUE
+rt__valid_commercial_p(VALUE y, VALUE w, VALUE d, VALUE sg)
+{
+ VALUE nth, rjd2;
+ int ry, rw, rd, rjd, ns;
+
+ if (!valid_commercial_p(y, NUM2INT(w), NUM2INT(d), NUM2DBL(sg),
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ return Qnil;
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+}
+
+static VALUE
+rt__valid_weeknum_p(VALUE y, VALUE w, VALUE d, VALUE f, VALUE sg)
+{
+ VALUE nth, rjd2;
+ int ry, rw, rd, rjd, ns;
+
+ if (!valid_weeknum_p(y, NUM2INT(w), NUM2INT(d), NUM2INT(f), NUM2DBL(sg),
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ return Qnil;
+ encode_jd(nth, rjd, &rjd2);
+ return rjd2;
+}
+
+static VALUE
+rt__valid_date_frags_p(VALUE hash, VALUE sg)
+{
+ {
+ VALUE vjd;
+
+ if (!NIL_P(vjd = ref_hash("jd"))) {
+ VALUE jd = rt__valid_jd_p(vjd, sg);
+ if (!NIL_P(jd))
+ return jd;
+ }
+ }
+
+ {
+ VALUE year, yday;
+
+ if (!NIL_P(yday = ref_hash("yday")) &&
+ !NIL_P(year = ref_hash("year"))) {
+ VALUE jd = rt__valid_ordinal_p(year, yday, sg);
+ if (!NIL_P(jd))
+ return jd;
+ }
+ }
+
+ {
+ VALUE year, mon, mday;
+
+ if (!NIL_P(mday = ref_hash("mday")) &&
+ !NIL_P(mon = ref_hash("mon")) &&
+ !NIL_P(year = ref_hash("year"))) {
+ VALUE jd = rt__valid_civil_p(year, mon, mday, sg);
+ if (!NIL_P(jd))
+ return jd;
+ }
+ }
+
+ {
+ VALUE year, week, wday;
+
+ wday = ref_hash("cwday");
+ if (NIL_P(wday)) {
+ wday = ref_hash("wday");
+ if (!NIL_P(wday))
+ if (f_zero_p(wday))
+ wday = INT2FIX(7);
+ }
+
+ if (!NIL_P(wday) &&
+ !NIL_P(week = ref_hash("cweek")) &&
+ !NIL_P(year = ref_hash("cwyear"))) {
+ VALUE jd = rt__valid_commercial_p(year, week, wday, sg);
+ if (!NIL_P(jd))
+ return jd;
+ }
+ }
+
+ {
+ VALUE year, week, wday;
+
+ wday = ref_hash("wday");
+ if (NIL_P(wday)) {
+ wday = ref_hash("cwday");
+ if (!NIL_P(wday))
+ if (f_eqeq_p(wday, INT2FIX(7)))
+ wday = INT2FIX(0);
+ }
+
+ if (!NIL_P(wday) &&
+ !NIL_P(week = ref_hash("wnum0")) &&
+ !NIL_P(year = ref_hash("year"))) {
+ VALUE jd = rt__valid_weeknum_p(year, week, wday, INT2FIX(0), sg);
+ if (!NIL_P(jd))
+ return jd;
+ }
+ }
+
+ {
+ VALUE year, week, wday;
+
+ wday = ref_hash("wday");
+ if (NIL_P(wday))
+ wday = ref_hash("cwday");
+ if (!NIL_P(wday))
+ wday = f_mod(f_sub(wday, INT2FIX(1)),
+ INT2FIX(7));
+
+ if (!NIL_P(wday) &&
+ !NIL_P(week = ref_hash("wnum1")) &&
+ !NIL_P(year = ref_hash("year"))) {
+ VALUE jd = rt__valid_weeknum_p(year, week, wday, INT2FIX(1), sg);
+ if (!NIL_P(jd))
+ return jd;
+ }
+ }
+ return Qnil;
+}
+
+static VALUE
+d_new_by_frags(VALUE klass, VALUE hash, VALUE sg)
+{
+ VALUE jd;
+
+ if (!c_valid_start_p(NUM2DBL(sg))) {
+ sg = INT2FIX(DEFAULT_SG);
+ rb_warning("invalid start is ignored");
+ }
+
+ if (NIL_P(hash))
+ rb_raise(eDateError, "invalid date");
+
+ if (NIL_P(ref_hash("jd")) &&
+ NIL_P(ref_hash("yday")) &&
+ !NIL_P(ref_hash("year")) &&
+ !NIL_P(ref_hash("mon")) &&
+ !NIL_P(ref_hash("mday")))
+ jd = rt__valid_civil_p(ref_hash("year"),
+ ref_hash("mon"),
+ ref_hash("mday"), sg);
+ else {
+ hash = rt_rewrite_frags(hash);
+ hash = rt_complete_frags(klass, hash);
+ jd = rt__valid_date_frags_p(hash, sg);
+ }
+
+ if (NIL_P(jd))
+ rb_raise(eDateError, "invalid date");
+ {
+ VALUE nth;
+ int rjd;
+
+ decode_jd(jd, &nth, &rjd);
+ return d_simple_new_internal(klass,
+ nth, rjd,
+ NUM2DBL(sg),
+ 0, 0, 0,
+ HAVE_JD);
+ }
+}
+
+VALUE date__strptime(const char *str, size_t slen,
+ const char *fmt, size_t flen, VALUE hash);
+
+static VALUE
+date_s__strptime_internal(int argc, VALUE *argv, VALUE klass,
+ const char *default_fmt)
+{
+ VALUE vstr, vfmt, hash;
+ const char *str, *fmt;
+ size_t slen, flen;
+
+ rb_scan_args(argc, argv, "11", &vstr, &vfmt);
+
+ StringValue(vstr);
+ if (argc > 1) StringValue(vfmt);
+ if (!rb_enc_str_asciicompat_p(vstr))
+ rb_raise(rb_eArgError,
+ "string should have ASCII compatible encoding");
+ str = RSTRING_PTR(vstr);
+ slen = RSTRING_LEN(vstr);
+ if (argc < 2) {
+ fmt = default_fmt;
+ flen = strlen(default_fmt);
+ }
+ else {
+ if (!rb_enc_str_asciicompat_p(vfmt))
+ rb_raise(rb_eArgError,
+ "format should have ASCII compatible encoding");
+ fmt = RSTRING_PTR(vfmt);
+ flen = RSTRING_LEN(vfmt);
+ }
+ hash = rb_hash_new();
+ if (NIL_P(date__strptime(str, slen, fmt, flen, hash)))
+ return Qnil;
+
+ {
+ VALUE zone = ref_hash("zone");
+ VALUE left = ref_hash("leftover");
+
+ if (!NIL_P(zone)) {
+ rb_enc_copy(zone, vstr);
+ set_hash("zone", zone);
+ }
+ if (!NIL_P(left)) {
+ rb_enc_copy(left, vstr);
+ set_hash("leftover", left);
+ }
+ }
+
+ return hash;
+}
+
+/*
+ * call-seq:
+ * Date._strptime(string, format = '%F') -> hash
+ *
+ * Returns a hash of values parsed from +string+
+ * according to the given +format+:
+ *
+ * Date._strptime('2001-02-03', '%Y-%m-%d') # => {:year=>2001, :mon=>2, :mday=>3}
+ *
+ * For other formats, see
+ * {Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc].
+ * (Unlike Date.strftime, does not support flags and width.)
+ *
+ * See also {strptime(3)}[https://man7.org/linux/man-pages/man3/strptime.3.html].
+ *
+ * Related: Date.strptime (returns a \Date object).
+ */
+static VALUE
+date_s__strptime(int argc, VALUE *argv, VALUE klass)
+{
+ return date_s__strptime_internal(argc, argv, klass, "%F");
+}
+
+/*
+ * call-seq:
+ * Date.strptime(string = '-4712-01-01', format = '%F', start = Date::ITALY) -> date
+ *
+ * Returns a new \Date object with values parsed from +string+,
+ * according to the given +format+:
+ *
+ * Date.strptime('2001-02-03', '%Y-%m-%d') # => #<Date: 2001-02-03>
+ * Date.strptime('03-02-2001', '%d-%m-%Y') # => #<Date: 2001-02-03>
+ * Date.strptime('2001-034', '%Y-%j') # => #<Date: 2001-02-03>
+ * Date.strptime('2001-W05-6', '%G-W%V-%u') # => #<Date: 2001-02-03>
+ * Date.strptime('2001 04 6', '%Y %U %w') # => #<Date: 2001-02-03>
+ * Date.strptime('2001 05 6', '%Y %W %u') # => #<Date: 2001-02-03>
+ * Date.strptime('sat3feb01', '%a%d%b%y') # => #<Date: 2001-02-03>
+ *
+ * For other formats, see
+ * {Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc].
+ * (Unlike Date.strftime, does not support flags and width.)
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ * See also {strptime(3)}[https://man7.org/linux/man-pages/man3/strptime.3.html].
+ *
+ * Related: Date._strptime (returns a hash).
+ */
+static VALUE
+date_s_strptime(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, fmt, sg;
+
+ rb_scan_args(argc, argv, "03", &str, &fmt, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATE);
+ case 1:
+ fmt = rb_str_new2("%F");
+ case 2:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE argv2[2], hash;
+
+ argv2[0] = str;
+ argv2[1] = fmt;
+ hash = date_s__strptime(2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+VALUE date__parse(VALUE str, VALUE comp);
+
+static size_t
+get_limit(VALUE opt)
+{
+ if (!NIL_P(opt)) {
+ VALUE limit = rb_hash_aref(opt, ID2SYM(rb_intern("limit")));
+ if (NIL_P(limit)) return SIZE_MAX;
+ return NUM2SIZET(limit);
+ }
+ return 128;
+}
+
+#ifndef HAVE_RB_CATEGORY_WARN
+#define rb_category_warn(category, fmt) rb_warn(fmt)
+#endif
+
+static VALUE
+check_limit(VALUE str, VALUE opt)
+{
+ size_t slen, limit;
+ StringValue(str);
+ slen = RSTRING_LEN(str);
+ limit = get_limit(opt);
+ if (slen > limit) {
+ rb_raise(rb_eArgError,
+ "string length (%"PRI_SIZE_PREFIX"u) exceeds the limit %"PRI_SIZE_PREFIX"u", slen, limit);
+ }
+ return str;
+}
+
+static VALUE
+date_s__parse_internal(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vstr, vcomp, hash, opt;
+
+ argc = rb_scan_args(argc, argv, "11:", &vstr, &vcomp, &opt);
+ vstr = check_limit(vstr, opt);
+ if (!rb_enc_str_asciicompat_p(vstr))
+ rb_raise(rb_eArgError,
+ "string should have ASCII compatible encoding");
+ if (argc < 2)
+ vcomp = Qtrue;
+
+ hash = date__parse(vstr, vcomp);
+
+ return hash;
+}
+
+/*
+ * call-seq:
+ * Date._parse(string, comp = true, limit: 128) -> hash
+ *
+ * <b>Note</b>:
+ * This method recognizes many forms in +string+,
+ * but it is not a validator.
+ * For formats, see
+ * {"Specialized Format Strings" in Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc@Specialized+Format+Strings]
+ *
+ * If +string+ does not specify a valid date,
+ * the result is unpredictable;
+ * consider using Date._strptime instead.
+ *
+ * Returns a hash of values parsed from +string+:
+ *
+ * Date._parse('2001-02-03') # => {:year=>2001, :mon=>2, :mday=>3}
+ *
+ * If +comp+ is +true+ and the given year is in the range <tt>(0..99)</tt>,
+ * the current century is supplied;
+ * otherwise, the year is taken as given:
+ *
+ * Date._parse('01-02-03', true) # => {:year=>2001, :mon=>2, :mday=>3}
+ * Date._parse('01-02-03', false) # => {:year=>1, :mon=>2, :mday=>3}
+ *
+ * See argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date.parse(returns a \Date object).
+ */
+static VALUE
+date_s__parse(int argc, VALUE *argv, VALUE klass)
+{
+ return date_s__parse_internal(argc, argv, klass);
+}
+
+/*
+ * call-seq:
+ * Date.parse(string = '-4712-01-01', comp = true, start = Date::ITALY, limit: 128) -> date
+ *
+ * <b>Note</b>:
+ * This method recognizes many forms in +string+,
+ * but it is not a validator.
+ * For formats, see
+ * {"Specialized Format Strings" in Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc@Specialized+Format+Strings]
+ * If +string+ does not specify a valid date,
+ * the result is unpredictable;
+ * consider using Date._strptime instead.
+ *
+ * Returns a new \Date object with values parsed from +string+:
+ *
+ * Date.parse('2001-02-03') # => #<Date: 2001-02-03>
+ * Date.parse('20010203') # => #<Date: 2001-02-03>
+ * Date.parse('3rd Feb 2001') # => #<Date: 2001-02-03>
+ *
+ * If +comp+ is +true+ and the given year is in the range <tt>(0..99)</tt>,
+ * the current century is supplied;
+ * otherwise, the year is taken as given:
+ *
+ * Date.parse('01-02-03', true) # => #<Date: 2001-02-03>
+ * Date.parse('01-02-03', false) # => #<Date: 0001-02-03>
+ *
+ * See:
+ *
+ * - Argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ * - Argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date._parse (returns a hash).
+ */
+static VALUE
+date_s_parse(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, comp, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "03:", &str, &comp, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATE);
+ case 1:
+ comp = Qtrue;
+ case 2:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 2;
+ VALUE argv2[3], hash;
+ argv2[0] = str;
+ argv2[1] = comp;
+ if (!NIL_P(opt)) argv2[argc2++] = opt;
+ hash = date_s__parse(argc2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+VALUE date__iso8601(VALUE);
+VALUE date__rfc3339(VALUE);
+VALUE date__xmlschema(VALUE);
+VALUE date__rfc2822(VALUE);
+VALUE date__httpdate(VALUE);
+VALUE date__jisx0301(VALUE);
+
+/*
+ * call-seq:
+ * Date._iso8601(string, limit: 128) -> hash
+ *
+ * Returns a hash of values parsed from +string+, which should contain
+ * an {ISO 8601 formatted date}[rdoc-ref:language/strftime_formatting.rdoc@ISO+8601+Format+Specifications]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.iso8601 # => "2001-02-03"
+ * Date._iso8601(s) # => {:mday=>3, :year=>2001, :mon=>2}
+ *
+ * See argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date.iso8601 (returns a \Date object).
+ */
+static VALUE
+date_s__iso8601(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, opt;
+
+ rb_scan_args(argc, argv, "1:", &str, &opt);
+ if (!NIL_P(str)) str = check_limit(str, opt);
+
+ return date__iso8601(str);
+}
+
+/*
+ * call-seq:
+ * Date.iso8601(string = '-4712-01-01', start = Date::ITALY, limit: 128) -> date
+ *
+ * Returns a new \Date object with values parsed from +string+,
+ * which should contain
+ * an {ISO 8601 formatted date}[rdoc-ref:language/strftime_formatting.rdoc@ISO+8601+Format+Specifications]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.iso8601 # => "2001-02-03"
+ * Date.iso8601(s) # => #<Date: 2001-02-03>
+ *
+ * See:
+ *
+ * - Argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ * - Argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date._iso8601 (returns a hash).
+ */
+static VALUE
+date_s_iso8601(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATE);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ if (!NIL_P(opt)) argv2[argc2++] = opt;
+ hash = date_s__iso8601(argc2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._rfc3339(string, limit: 128) -> hash
+ *
+ * Returns a hash of values parsed from +string+, which should be a valid
+ * {RFC 3339 format}[rdoc-ref:language/strftime_formatting.rdoc@RFC+3339+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.rfc3339 # => "2001-02-03T00:00:00+00:00"
+ * Date._rfc3339(s)
+ * # => {:year=>2001, :mon=>2, :mday=>3, :hour=>0, :min=>0, :sec=>0, :zone=>"+00:00", :offset=>0}
+ *
+ * See argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date.rfc3339 (returns a \Date object).
+ */
+static VALUE
+date_s__rfc3339(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, opt;
+
+ rb_scan_args(argc, argv, "1:", &str, &opt);
+ if (!NIL_P(str)) str = check_limit(str, opt);
+
+ return date__rfc3339(str);
+}
+
+/*
+ * call-seq:
+ * Date.rfc3339(string = '-4712-01-01T00:00:00+00:00', start = Date::ITALY, limit: 128) -> date
+ *
+ * Returns a new \Date object with values parsed from +string+,
+ * which should be a valid
+ * {RFC 3339 format}[rdoc-ref:language/strftime_formatting.rdoc@RFC+3339+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.rfc3339 # => "2001-02-03T00:00:00+00:00"
+ * Date.rfc3339(s) # => #<Date: 2001-02-03>
+ *
+ * See:
+ *
+ * - Argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ * - Argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date._rfc3339 (returns a hash).
+ */
+static VALUE
+date_s_rfc3339(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ if (!NIL_P(opt)) argv2[argc2++] = opt;
+ hash = date_s__rfc3339(argc2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._xmlschema(string, limit: 128) -> hash
+ *
+ * Returns a hash of values parsed from +string+, which should be a valid
+ * XML date format:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.xmlschema # => "2001-02-03"
+ * Date._xmlschema(s) # => {:year=>2001, :mon=>2, :mday=>3}
+ *
+ * See argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date.xmlschema (returns a \Date object).
+ */
+static VALUE
+date_s__xmlschema(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, opt;
+
+ rb_scan_args(argc, argv, "1:", &str, &opt);
+ if (!NIL_P(str)) str = check_limit(str, opt);
+
+ return date__xmlschema(str);
+}
+
+/*
+ * call-seq:
+ * Date.xmlschema(string = '-4712-01-01', start = Date::ITALY, limit: 128) -> date
+ *
+ * Returns a new \Date object with values parsed from +string+,
+ * which should be a valid XML date format:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.xmlschema # => "2001-02-03"
+ * Date.xmlschema(s) # => #<Date: 2001-02-03>
+ *
+ * See:
+ *
+ * - Argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ * - Argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date._xmlschema (returns a hash).
+ */
+static VALUE
+date_s_xmlschema(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATE);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ if (!NIL_P(opt)) argv2[argc2++] = opt;
+ hash = date_s__xmlschema(argc2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._rfc2822(string, limit: 128) -> hash
+ *
+ * Returns a hash of values parsed from +string+, which should be a valid
+ * {RFC 2822 date format}[rdoc-ref:language/strftime_formatting.rdoc@RFC+2822+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.rfc2822 # => "Sat, 3 Feb 2001 00:00:00 +0000"
+ * Date._rfc2822(s)
+ * # => {:wday=>6, :mday=>3, :mon=>2, :year=>2001, :hour=>0, :min=>0, :sec=>0, :zone=>"+0000", :offset=>0}
+ *
+ * See argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date.rfc2822 (returns a \Date object).
+ */
+static VALUE
+date_s__rfc2822(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, opt;
+
+ rb_scan_args(argc, argv, "1:", &str, &opt);
+ if (!NIL_P(str)) str = check_limit(str, opt);
+
+ return date__rfc2822(str);
+}
+
+/*
+ * call-seq:
+ * Date.rfc2822(string = 'Mon, 1 Jan -4712 00:00:00 +0000', start = Date::ITALY, limit: 128) -> date
+ *
+ * Returns a new \Date object with values parsed from +string+,
+ * which should be a valid
+ * {RFC 2822 date format}[rdoc-ref:language/strftime_formatting.rdoc@RFC+2822+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.rfc2822 # => "Sat, 3 Feb 2001 00:00:00 +0000"
+ * Date.rfc2822(s) # => #<Date: 2001-02-03>
+ *
+ * See:
+ *
+ * - Argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ * - Argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date._rfc2822 (returns a hash).
+ */
+static VALUE
+date_s_rfc2822(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME_RFC3339);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ if (!NIL_P(opt)) argv2[argc2++] = opt;
+ hash = date_s__rfc2822(argc2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._httpdate(string, limit: 128) -> hash
+ *
+ * Returns a hash of values parsed from +string+, which should be a valid
+ * {HTTP date format}[rdoc-ref:language/strftime_formatting.rdoc@HTTP+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.httpdate # => "Sat, 03 Feb 2001 00:00:00 GMT"
+ * Date._httpdate(s)
+ * # => {:wday=>6, :mday=>3, :mon=>2, :year=>2001, :hour=>0, :min=>0, :sec=>0, :zone=>"GMT", :offset=>0}
+ *
+ * Related: Date.httpdate (returns a \Date object).
+ */
+static VALUE
+date_s__httpdate(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, opt;
+
+ rb_scan_args(argc, argv, "1:", &str, &opt);
+ if (!NIL_P(str)) str = check_limit(str, opt);
+
+ return date__httpdate(str);
+}
+
+/*
+ * call-seq:
+ * Date.httpdate(string = 'Mon, 01 Jan -4712 00:00:00 GMT', start = Date::ITALY, limit: 128) -> date
+ *
+ * Returns a new \Date object with values parsed from +string+,
+ * which should be a valid
+ * {HTTP date format}[rdoc-ref:language/strftime_formatting.rdoc@HTTP+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ s = d.httpdate # => "Sat, 03 Feb 2001 00:00:00 GMT"
+ Date.httpdate(s) # => #<Date: 2001-02-03>
+ *
+ * See:
+ *
+ * - Argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ * - Argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date._httpdate (returns a hash).
+ */
+static VALUE
+date_s_httpdate(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME_HTTPDATE);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ if (!NIL_P(opt)) argv2[argc2++] = opt;
+ hash = date_s__httpdate(argc2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._jisx0301(string, limit: 128) -> hash
+ *
+ * Returns a hash of values parsed from +string+, which should be a valid
+ * {JIS X 0301 date format}[rdoc-ref:language/strftime_formatting.rdoc@JIS+X+0301+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.jisx0301 # => "H13.02.03"
+ * Date._jisx0301(s) # => {:year=>2001, :mon=>2, :mday=>3}
+ *
+ * See argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date.jisx0301 (returns a \Date object).
+ */
+static VALUE
+date_s__jisx0301(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, opt;
+
+ rb_scan_args(argc, argv, "1:", &str, &opt);
+ if (!NIL_P(str)) str = check_limit(str, opt);
+
+ return date__jisx0301(str);
+}
+
+/*
+ * call-seq:
+ * Date.jisx0301(string = '-4712-01-01', start = Date::ITALY, limit: 128) -> date
+ *
+ * Returns a new \Date object with values parsed from +string+,
+ * which should be a valid {JIS X 0301 format}[rdoc-ref:language/strftime_formatting.rdoc@JIS+X+0301+Format]:
+ *
+ * d = Date.new(2001, 2, 3)
+ * s = d.jisx0301 # => "H13.02.03"
+ * Date.jisx0301(s) # => #<Date: 2001-02-03>
+ *
+ * For no-era year, legacy format, Heisei is assumed.
+ *
+ * Date.jisx0301('13.02.03') # => #<Date: 2001-02-03>
+ *
+ * See:
+ *
+ * - Argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ * - Argument {limit}[rdoc-ref:Date@Argument+limit].
+ *
+ * Related: Date._jisx0301 (returns a hash).
+ */
+static VALUE
+date_s_jisx0301(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATE);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ if (!NIL_P(opt)) argv2[argc2++] = opt;
+ hash = date_s__jisx0301(argc2, argv2, klass);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+static VALUE
+dup_obj(VALUE self)
+{
+ get_d1a(self);
+
+ if (simple_dat_p(adat)) {
+ VALUE new = d_lite_s_alloc_simple(rb_obj_class(self));
+ {
+ get_d1b(new);
+ bdat->s = adat->s;
+ RB_OBJ_WRITTEN(new, Qundef, bdat->s.nth);
+ return new;
+ }
+ }
+ else {
+ VALUE new = d_lite_s_alloc_complex(rb_obj_class(self));
+ {
+ get_d1b(new);
+ bdat->c = adat->c;
+ RB_OBJ_WRITTEN(new, Qundef, bdat->c.nth);
+ RB_OBJ_WRITTEN(new, Qundef, bdat->c.sf);
+ return new;
+ }
+ }
+}
+
+static VALUE
+dup_obj_as_complex(VALUE self)
+{
+ get_d1a(self);
+
+ if (simple_dat_p(adat)) {
+ VALUE new = d_lite_s_alloc_complex(rb_obj_class(self));
+ {
+ get_d1b(new);
+ copy_simple_to_complex(new, &bdat->c, &adat->s);
+ bdat->c.flags |= HAVE_DF | COMPLEX_DAT;
+ return new;
+ }
+ }
+ else {
+ VALUE new = d_lite_s_alloc_complex(rb_obj_class(self));
+ {
+ get_d1b(new);
+ bdat->c = adat->c;
+ RB_OBJ_WRITTEN(new, Qundef, bdat->c.nth);
+ RB_OBJ_WRITTEN(new, Qundef, bdat->c.sf);
+ return new;
+ }
+ }
+}
+
+#define val2off(vof,iof) \
+do {\
+ if (!offset_to_sec(vof, &iof)) {\
+ iof = 0;\
+ rb_warning("invalid offset is ignored");\
+ }\
+} while (0)
+
+#if 0
+static VALUE
+d_lite_initialize(int argc, VALUE *argv, VALUE self)
+{
+ VALUE jd, vjd, vdf, sf, vsf, vof, vsg;
+ int df, of;
+ double sg;
+
+ rb_check_frozen(self);
+
+ rb_scan_args(argc, argv, "05", &vjd, &vdf, &vsf, &vof, &vsg);
+
+ jd = INT2FIX(0);
+ df = 0;
+ sf = INT2FIX(0);
+ of = 0;
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 5:
+ val2sg(vsg, sg);
+ case 4:
+ val2off(vof, of);
+ case 3:
+ sf = vsf;
+ if (f_lt_p(sf, INT2FIX(0)) ||
+ f_ge_p(sf, INT2FIX(SECOND_IN_NANOSECONDS)))
+ rb_raise(eDateError, "invalid second fraction");
+ case 2:
+ df = NUM2INT(vdf);
+ if (df < 0 || df >= DAY_IN_SECONDS)
+ rb_raise(eDateError, "invalid day fraction");
+ case 1:
+ jd = vjd;
+ }
+
+ {
+ VALUE nth;
+ int rjd;
+
+ get_d1(self);
+
+ decode_jd(jd, &nth, &rjd);
+ if (!df && f_zero_p(sf) && !of) {
+ set_to_simple(self, &dat->s, nth, rjd, sg, 0, 0, 0, HAVE_JD);
+ }
+ else {
+ if (!complex_dat_p(dat))
+ rb_raise(rb_eArgError,
+ "cannot load complex into simple");
+
+ set_to_complex(self, &dat->c, nth, rjd, df, sf, of, sg,
+ 0, 0, 0, 0, 0, 0, HAVE_JD | HAVE_DF);
+ }
+ }
+ return self;
+}
+#endif
+
+/* :nodoc: */
+static VALUE
+d_lite_initialize_copy(VALUE copy, VALUE date)
+{
+ rb_check_frozen(copy);
+
+ if (copy == date)
+ return copy;
+ {
+ get_d2(copy, date);
+ if (simple_dat_p(bdat)) {
+ if (simple_dat_p(adat)) {
+ adat->s = bdat->s;
+ }
+ else {
+ adat->c.flags = bdat->s.flags | COMPLEX_DAT;
+ adat->c.nth = bdat->s.nth;
+ adat->c.jd = bdat->s.jd;
+ adat->c.df = 0;
+ adat->c.sf = INT2FIX(0);
+ adat->c.of = 0;
+ adat->c.sg = bdat->s.sg;
+ adat->c.year = bdat->s.year;
+#ifndef USE_PACK
+ adat->c.mon = bdat->s.mon;
+ adat->c.mday = bdat->s.mday;
+ adat->c.hour = bdat->s.hour;
+ adat->c.min = bdat->s.min;
+ adat->c.sec = bdat->s.sec;
+#else
+ adat->c.pc = bdat->s.pc;
+#endif
+ }
+ }
+ else {
+ if (!complex_dat_p(adat))
+ rb_raise(rb_eArgError,
+ "cannot load complex into simple");
+
+ adat->c = bdat->c;
+ }
+ }
+ return copy;
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+d_lite_fill(VALUE self)
+{
+ get_d1(self);
+
+ if (simple_dat_p(dat)) {
+ get_s_jd(dat);
+ get_s_civil(dat);
+ }
+ else {
+ get_c_jd(dat);
+ get_c_civil(dat);
+ get_c_df(dat);
+ get_c_time(dat);
+ }
+ return self;
+}
+#endif
+
+/*
+ * call-seq:
+ * d.ajd -> rational
+ *
+ * Returns the astronomical Julian day number. This is a fractional
+ * number, which is not adjusted by the offset.
+ *
+ * DateTime.new(2001,2,3,4,5,6,'+7').ajd #=> (11769328217/4800)
+ * DateTime.new(2001,2,2,14,5,6,'-7').ajd #=> (11769328217/4800)
+ */
+static VALUE
+d_lite_ajd(VALUE self)
+{
+ get_d1(self);
+ return m_ajd(dat);
+}
+
+/*
+ * call-seq:
+ * d.amjd -> rational
+ *
+ * Returns the astronomical modified Julian day number. This is
+ * a fractional number, which is not adjusted by the offset.
+ *
+ * DateTime.new(2001,2,3,4,5,6,'+7').amjd #=> (249325817/4800)
+ * DateTime.new(2001,2,2,14,5,6,'-7').amjd #=> (249325817/4800)
+ */
+static VALUE
+d_lite_amjd(VALUE self)
+{
+ get_d1(self);
+ return m_amjd(dat);
+}
+
+/*
+ * call-seq:
+ * d.jd -> integer
+ *
+ * Returns the Julian day number. This is a whole number, which is
+ * adjusted by the offset as the local time.
+ *
+ * DateTime.new(2001,2,3,4,5,6,'+7').jd #=> 2451944
+ * DateTime.new(2001,2,3,4,5,6,'-7').jd #=> 2451944
+ */
+static VALUE
+d_lite_jd(VALUE self)
+{
+ get_d1(self);
+ return m_real_local_jd(dat);
+}
+
+/*
+ * call-seq:
+ * d.mjd -> integer
+ *
+ * Returns the modified Julian day number. This is a whole number,
+ * which is adjusted by the offset as the local time.
+ *
+ * DateTime.new(2001,2,3,4,5,6,'+7').mjd #=> 51943
+ * DateTime.new(2001,2,3,4,5,6,'-7').mjd #=> 51943
+ */
+static VALUE
+d_lite_mjd(VALUE self)
+{
+ get_d1(self);
+ return f_sub(m_real_local_jd(dat), INT2FIX(2400001));
+}
+
+/*
+ * call-seq:
+ * ld -> integer
+ *
+ * Returns the
+ * {Lilian day number}[https://en.wikipedia.org/wiki/Lilian_date],
+ * which is the number of days since the beginning of the Gregorian
+ * calendar, October 15, 1582.
+ *
+ * Date.new(2001, 2, 3).ld # => 152784
+ *
+ */
+static VALUE
+d_lite_ld(VALUE self)
+{
+ get_d1(self);
+ return f_sub(m_real_local_jd(dat), INT2FIX(2299160));
+}
+
+/*
+ * call-seq:
+ * year -> integer
+ *
+ * Returns the year:
+ *
+ * Date.new(2001, 2, 3).year # => 2001
+ * (Date.new(1, 1, 1) - 1).year # => 0
+ *
+ */
+static VALUE
+d_lite_year(VALUE self)
+{
+ get_d1(self);
+ return m_real_year(dat);
+}
+
+/*
+ * call-seq:
+ * yday -> integer
+ *
+ * Returns the day of the year, in range (1..366):
+ *
+ * Date.new(2001, 2, 3).yday # => 34
+ *
+ */
+static VALUE
+d_lite_yday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_yday(dat));
+}
+
+/*
+ * call-seq:
+ * mon -> integer
+ *
+ * Returns the month in range (1..12):
+ *
+ * Date.new(2001, 2, 3).mon # => 2
+ *
+ */
+static VALUE
+d_lite_mon(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_mon(dat));
+}
+
+/*
+ * call-seq:
+ * mday -> integer
+ *
+ * Returns the day of the month in range (1..31):
+ *
+ * Date.new(2001, 2, 3).mday # => 3
+ *
+ */
+static VALUE
+d_lite_mday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_mday(dat));
+}
+
+/*
+ * call-seq:
+ * day_fraction -> rational
+ *
+ * Returns the fractional part of the day in range (Rational(0, 1)...Rational(1, 1)):
+ *
+ * DateTime.new(2001,2,3,12).day_fraction # => (1/2)
+ *
+ */
+static VALUE
+d_lite_day_fraction(VALUE self)
+{
+ get_d1(self);
+ if (simple_dat_p(dat))
+ return INT2FIX(0);
+ return m_fr(dat);
+}
+
+/*
+ * call-seq:
+ * cwyear -> integer
+ *
+ * Returns commercial-date year for +self+
+ * (see Date.commercial):
+ *
+ * Date.new(2001, 2, 3).cwyear # => 2001
+ * Date.new(2000, 1, 1).cwyear # => 1999
+ *
+ */
+static VALUE
+d_lite_cwyear(VALUE self)
+{
+ get_d1(self);
+ return m_real_cwyear(dat);
+}
+
+/*
+ * call-seq:
+ * cweek -> integer
+ *
+ * Returns commercial-date week index for +self+
+ * (see Date.commercial):
+ *
+ * Date.new(2001, 2, 3).cweek # => 5
+ *
+ */
+static VALUE
+d_lite_cweek(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_cweek(dat));
+}
+
+/*
+ * call-seq:
+ * cwday -> integer
+ *
+ * Returns the commercial-date weekday index for +self+
+ * (see Date.commercial);
+ * 1 is Monday:
+ *
+ * Date.new(2001, 2, 3).cwday # => 6
+ *
+ */
+static VALUE
+d_lite_cwday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_cwday(dat));
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+d_lite_wnum0(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_wnum0(dat));
+}
+
+/* :nodoc: */
+static VALUE
+d_lite_wnum1(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_wnum1(dat));
+}
+#endif
+
+/*
+ * call-seq:
+ * wday -> integer
+ *
+ * Returns the day of week in range (0..6); Sunday is 0:
+ *
+ * Date.new(2001, 2, 3).wday # => 6
+ *
+ */
+static VALUE
+d_lite_wday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_wday(dat));
+}
+
+/*
+ * call-seq:
+ * sunday? -> true or false
+ *
+ * Returns +true+ if +self+ is a Sunday, +false+ otherwise.
+ */
+static VALUE
+d_lite_sunday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 0);
+}
+
+/*
+ * call-seq:
+ * monday? -> true or false
+ *
+ * Returns +true+ if +self+ is a Monday, +false+ otherwise.
+ */
+static VALUE
+d_lite_monday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 1);
+}
+
+/*
+ * call-seq:
+ * tuesday? -> true or false
+ *
+ * Returns +true+ if +self+ is a Tuesday, +false+ otherwise.
+ */
+static VALUE
+d_lite_tuesday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 2);
+}
+
+/*
+ * call-seq:
+ * wednesday? -> true or false
+ *
+ * Returns +true+ if +self+ is a Wednesday, +false+ otherwise.
+ */
+static VALUE
+d_lite_wednesday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 3);
+}
+
+/*
+ * call-seq:
+ * thursday? -> true or false
+ *
+ * Returns +true+ if +self+ is a Thursday, +false+ otherwise.
+ */
+static VALUE
+d_lite_thursday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 4);
+}
+
+/*
+ * call-seq:
+ * friday? -> true or false
+ *
+ * Returns +true+ if +self+ is a Friday, +false+ otherwise.
+ */
+static VALUE
+d_lite_friday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 5);
+}
+
+/*
+ * call-seq:
+ * saturday? -> true or false
+ *
+ * Returns +true+ if +self+ is a Saturday, +false+ otherwise.
+ */
+static VALUE
+d_lite_saturday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 6);
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+d_lite_nth_kday_p(VALUE self, VALUE n, VALUE k)
+{
+ int rjd, ns;
+
+ get_d1(self);
+
+ if (NUM2INT(k) != m_wday(dat))
+ return Qfalse;
+
+ c_nth_kday_to_jd(m_year(dat), m_mon(dat),
+ NUM2INT(n), NUM2INT(k), m_virtual_sg(dat), /* !=m_sg() */
+ &rjd, &ns);
+ if (m_local_jd(dat) != rjd)
+ return Qfalse;
+ return Qtrue;
+}
+#endif
+
+/*
+ * call-seq:
+ * hour -> integer
+ *
+ * Returns the hour in range (0..23):
+ *
+ * DateTime.new(2001, 2, 3, 4, 5, 6).hour # => 4
+ *
+ */
+static VALUE
+d_lite_hour(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_hour(dat));
+}
+
+/*
+ * call-seq:
+ * min -> integer
+ *
+ * Returns the minute in range (0..59):
+ *
+ * DateTime.new(2001, 2, 3, 4, 5, 6).min # => 5
+ *
+ */
+static VALUE
+d_lite_min(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_min(dat));
+}
+
+/*
+ * call-seq:
+ * sec -> integer
+ *
+ * Returns the second in range (0..59):
+ *
+ * DateTime.new(2001, 2, 3, 4, 5, 6).sec # => 6
+ *
+ */
+static VALUE
+d_lite_sec(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_sec(dat));
+}
+
+/*
+ * call-seq:
+ * sec_fraction -> rational
+ *
+ * Returns the fractional part of the second in range
+ * (Rational(0, 1)...Rational(1, 1)):
+ *
+ * DateTime.new(2001, 2, 3, 4, 5, 6.5).sec_fraction # => (1/2)
+ *
+ */
+static VALUE
+d_lite_sec_fraction(VALUE self)
+{
+ get_d1(self);
+ return m_sf_in_sec(dat);
+}
+
+/*
+ * call-seq:
+ * d.offset -> rational
+ *
+ * Returns the offset.
+ *
+ * DateTime.parse('04pm+0730').offset #=> (5/16)
+ */
+static VALUE
+d_lite_offset(VALUE self)
+{
+ get_d1(self);
+ return m_of_in_day(dat);
+}
+
+/*
+ * call-seq:
+ * d.zone -> string
+ *
+ * Returns the timezone.
+ *
+ * DateTime.parse('04pm+0730').zone #=> "+07:30"
+ */
+static VALUE
+d_lite_zone(VALUE self)
+{
+ get_d1(self);
+ return m_zone(dat);
+}
+
+/*
+ * call-seq:
+ * d.julian? -> true or false
+ *
+ * Returns +true+ if the date is before the date of calendar reform,
+ * +false+ otherwise:
+ *
+ * (Date.new(1582, 10, 15) - 1).julian? # => true
+ * Date.new(1582, 10, 15).julian? # => false
+ *
+ */
+static VALUE
+d_lite_julian_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_julian_p(dat));
+}
+
+/*
+ * call-seq:
+ * gregorian? -> true or false
+ *
+ * Returns +true+ if the date is on or after
+ * the date of calendar reform, +false+ otherwise:
+ *
+ * Date.new(1582, 10, 15).gregorian? # => true
+ * (Date.new(1582, 10, 15) - 1).gregorian? # => false
+ *
+ */
+static VALUE
+d_lite_gregorian_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_gregorian_p(dat));
+}
+
+/*
+ * call-seq:
+ * leap? -> true or false
+ *
+ * Returns +true+ if the year is a leap year, +false+ otherwise:
+ *
+ * Date.new(2000).leap? # => true
+ * Date.new(2001).leap? # => false
+ *
+ */
+static VALUE
+d_lite_leap_p(VALUE self)
+{
+ int rjd, ns, ry, rm, rd;
+
+ get_d1(self);
+ if (m_gregorian_p(dat))
+ return f_boolcast(c_gregorian_leap_p(m_year(dat)));
+
+ c_civil_to_jd(m_year(dat), 3, 1, m_virtual_sg(dat),
+ &rjd, &ns);
+ c_jd_to_civil(rjd - 1, m_virtual_sg(dat), &ry, &rm, &rd);
+ return f_boolcast(rd == 29);
+}
+
+/*
+ * call-seq:
+ * start -> float
+ *
+ * Returns the Julian start date for calendar reform;
+ * if not an infinity, the returned value is suitable
+ * for passing to Date#jd:
+ *
+ * d = Date.new(2001, 2, 3, Date::ITALY)
+ * s = d.start # => 2299161.0
+ * Date.jd(s).to_s # => "1582-10-15"
+ *
+ * d = Date.new(2001, 2, 3, Date::ENGLAND)
+ * s = d.start # => 2361222.0
+ * Date.jd(s).to_s # => "1752-09-14"
+ *
+ * Date.new(2001, 2, 3, Date::GREGORIAN).start # => -Infinity
+ * Date.new(2001, 2, 3, Date::JULIAN).start # => Infinity
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ */
+static VALUE
+d_lite_start(VALUE self)
+{
+ get_d1(self);
+ return DBL2NUM(m_sg(dat));
+}
+
+static void
+clear_civil(union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ x->s.year = 0;
+#ifndef USE_PACK
+ x->s.mon = 0;
+ x->s.mday = 0;
+#else
+ x->s.pc = 0;
+#endif
+ x->s.flags &= ~HAVE_CIVIL;
+ }
+ else {
+ x->c.year = 0;
+#ifndef USE_PACK
+ x->c.mon = 0;
+ x->c.mday = 0;
+ x->c.hour = 0;
+ x->c.min = 0;
+ x->c.sec = 0;
+#else
+ x->c.pc = 0;
+#endif
+ x->c.flags &= ~(HAVE_CIVIL | HAVE_TIME);
+ }
+}
+
+static void
+set_sg(union DateData *x, double sg)
+{
+ if (simple_dat_p(x)) {
+ get_s_jd(x);
+ clear_civil(x);
+ x->s.sg = (date_sg_t)sg;
+ } else {
+ get_c_jd(x);
+ get_c_df(x);
+ clear_civil(x);
+ x->c.sg = (date_sg_t)sg;
+ }
+}
+
+static VALUE
+dup_obj_with_new_start(VALUE obj, double sg)
+{
+ volatile VALUE dup = dup_obj(obj);
+ {
+ get_d1(dup);
+ set_sg(dat, sg);
+ }
+ return dup;
+}
+
+/*
+ * call-seq:
+ * new_start(start = Date::ITALY) -> new_date
+ *
+ * Returns a copy of +self+ with the given +start+ value:
+ *
+ * d0 = Date.new(2000, 2, 3)
+ * d0.julian? # => false
+ * d1 = d0.new_start(Date::JULIAN)
+ * d1.julian? # => true
+ *
+ * See argument {start}[rdoc-ref:language/calendars.rdoc@Argument+start].
+ *
+ */
+static VALUE
+d_lite_new_start(int argc, VALUE *argv, VALUE self)
+{
+ VALUE vsg;
+ double sg;
+
+ rb_scan_args(argc, argv, "01", &vsg);
+
+ sg = DEFAULT_SG;
+ if (argc >= 1)
+ val2sg(vsg, sg);
+
+ return dup_obj_with_new_start(self, sg);
+}
+
+/*
+ * call-seq:
+ * italy -> new_date
+ *
+ * Equivalent to Date#new_start with argument Date::ITALY.
+ *
+ */
+static VALUE
+d_lite_italy(VALUE self)
+{
+ return dup_obj_with_new_start(self, ITALY);
+}
+
+/*
+ * call-seq:
+ * england -> new_date
+ *
+ * Equivalent to Date#new_start with argument Date::ENGLAND.
+ */
+static VALUE
+d_lite_england(VALUE self)
+{
+ return dup_obj_with_new_start(self, ENGLAND);
+}
+
+/*
+ * call-seq:
+ * julian -> new_date
+ *
+ * Equivalent to Date#new_start with argument Date::JULIAN.
+ */
+static VALUE
+d_lite_julian(VALUE self)
+{
+ return dup_obj_with_new_start(self, JULIAN);
+}
+
+/*
+ * call-seq:
+ * gregorian -> new_date
+ *
+ * Equivalent to Date#new_start with argument Date::GREGORIAN.
+ */
+static VALUE
+d_lite_gregorian(VALUE self)
+{
+ return dup_obj_with_new_start(self, GREGORIAN);
+}
+
+static void
+set_of(union DateData *x, int of)
+{
+ assert(complex_dat_p(x));
+ get_c_jd(x);
+ get_c_df(x);
+ clear_civil(x);
+ x->c.of = of;
+}
+
+static VALUE
+dup_obj_with_new_offset(VALUE obj, int of)
+{
+ volatile VALUE dup = dup_obj_as_complex(obj);
+ {
+ get_d1(dup);
+ set_of(dat, of);
+ }
+ return dup;
+}
+
+/*
+ * call-seq:
+ * d.new_offset([offset=0]) -> date
+ *
+ * Duplicates self and resets its offset.
+ *
+ * d = DateTime.new(2001,2,3,4,5,6,'-02:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06-02:00 ...>
+ * d.new_offset('+09:00') #=> #<DateTime: 2001-02-03T15:05:06+09:00 ...>
+ */
+static VALUE
+d_lite_new_offset(int argc, VALUE *argv, VALUE self)
+{
+ VALUE vof;
+ int rof;
+
+ rb_scan_args(argc, argv, "01", &vof);
+
+ rof = 0;
+ if (argc >= 1)
+ val2off(vof, rof);
+
+ return dup_obj_with_new_offset(self, rof);
+}
+
+/*
+ * call-seq:
+ * d + other -> date
+ *
+ * Returns a date object pointing +other+ days after self. The other
+ * should be a numeric value. If the other is a fractional number,
+ * assumes its precision is at most nanosecond.
+ *
+ * Date.new(2001,2,3) + 1 #=> #<Date: 2001-02-04 ...>
+ * DateTime.new(2001,2,3) + Rational(1,2)
+ * #=> #<DateTime: 2001-02-03T12:00:00+00:00 ...>
+ * DateTime.new(2001,2,3) + Rational(-1,2)
+ * #=> #<DateTime: 2001-02-02T12:00:00+00:00 ...>
+ * DateTime.jd(0,12) + DateTime.new(2001,2,3).ajd
+ * #=> #<DateTime: 2001-02-03T00:00:00+00:00 ...>
+ */
+static VALUE
+d_lite_plus(VALUE self, VALUE other)
+{
+ int try_rational = 1;
+ get_d1(self);
+
+ again:
+ switch (TYPE(other)) {
+ case T_FIXNUM:
+ {
+ VALUE nth;
+ long t;
+ int jd;
+
+ nth = m_nth(dat);
+ t = FIX2LONG(other);
+ if (DIV(t, CM_PERIOD)) {
+ nth = f_add(nth, INT2FIX(DIV(t, CM_PERIOD)));
+ t = MOD(t, CM_PERIOD);
+ }
+
+ if (!t)
+ jd = m_jd(dat);
+ else {
+ jd = m_jd(dat) + (int)t;
+ canonicalize_jd(nth, jd);
+ }
+
+ if (simple_dat_p(dat))
+ return d_simple_new_internal(rb_obj_class(self),
+ nth, jd,
+ dat->s.sg,
+ 0, 0, 0,
+ (dat->s.flags | HAVE_JD) &
+ ~HAVE_CIVIL);
+ else
+ return d_complex_new_internal(rb_obj_class(self),
+ nth, jd,
+ dat->c.df, dat->c.sf,
+ dat->c.of, dat->c.sg,
+ 0, 0, 0,
+#ifndef USE_PACK
+ dat->c.hour,
+ dat->c.min,
+ dat->c.sec,
+#else
+ EX_HOUR(dat->c.pc),
+ EX_MIN(dat->c.pc),
+ EX_SEC(dat->c.pc),
+#endif
+ (dat->c.flags | HAVE_JD) &
+ ~HAVE_CIVIL);
+ }
+ break;
+ case T_BIGNUM:
+ {
+ VALUE nth;
+ int jd, s;
+
+ if (f_positive_p(other))
+ s = +1;
+ else {
+ s = -1;
+ other = f_negate(other);
+ }
+
+ nth = f_idiv(other, INT2FIX(CM_PERIOD));
+ jd = FIX2INT(f_mod(other, INT2FIX(CM_PERIOD)));
+
+ if (s < 0) {
+ nth = f_negate(nth);
+ jd = -jd;
+ }
+
+ if (!jd)
+ jd = m_jd(dat);
+ else {
+ jd = m_jd(dat) + jd;
+ canonicalize_jd(nth, jd);
+ }
+
+ if (f_zero_p(nth))
+ nth = m_nth(dat);
+ else
+ nth = f_add(m_nth(dat), nth);
+
+ if (simple_dat_p(dat))
+ return d_simple_new_internal(rb_obj_class(self),
+ nth, jd,
+ dat->s.sg,
+ 0, 0, 0,
+ (dat->s.flags | HAVE_JD) &
+ ~HAVE_CIVIL);
+ else
+ return d_complex_new_internal(rb_obj_class(self),
+ nth, jd,
+ dat->c.df, dat->c.sf,
+ dat->c.of, dat->c.sg,
+ 0, 0, 0,
+#ifndef USE_PACK
+ dat->c.hour,
+ dat->c.min,
+ dat->c.sec,
+#else
+ EX_HOUR(dat->c.pc),
+ EX_MIN(dat->c.pc),
+ EX_SEC(dat->c.pc),
+#endif
+ (dat->c.flags | HAVE_JD) &
+ ~HAVE_CIVIL);
+ }
+ break;
+ case T_FLOAT:
+ {
+ double jd, o, tmp;
+ int s, df;
+ VALUE nth, sf;
+
+ o = RFLOAT_VALUE(other);
+
+ if (o > 0)
+ s = +1;
+ else {
+ s = -1;
+ o = -o;
+ }
+
+ o = modf(o, &tmp);
+
+ if (!floor(tmp / CM_PERIOD)) {
+ nth = INT2FIX(0);
+ jd = (int)tmp;
+ }
+ else {
+ double i, f;
+
+ f = modf(tmp / CM_PERIOD, &i);
+ nth = f_floor(DBL2NUM(i));
+ jd = (int)(f * CM_PERIOD);
+ }
+
+ o *= DAY_IN_SECONDS;
+ o = modf(o, &tmp);
+ df = (int)tmp;
+ o *= SECOND_IN_NANOSECONDS;
+ sf = INT2FIX((int)round(o));
+
+ if (s < 0) {
+ jd = -jd;
+ df = -df;
+ sf = f_negate(sf);
+ }
+
+ if (f_zero_p(sf))
+ sf = m_sf(dat);
+ else {
+ sf = f_add(m_sf(dat), sf);
+ if (f_lt_p(sf, INT2FIX(0))) {
+ df -= 1;
+ sf = f_add(sf, INT2FIX(SECOND_IN_NANOSECONDS));
+ }
+ else if (f_ge_p(sf, INT2FIX(SECOND_IN_NANOSECONDS))) {
+ df += 1;
+ sf = f_sub(sf, INT2FIX(SECOND_IN_NANOSECONDS));
+ }
+ }
+
+ if (!df)
+ df = m_df(dat);
+ else {
+ df = m_df(dat) + df;
+ if (df < 0) {
+ jd -= 1;
+ df += DAY_IN_SECONDS;
+ }
+ else if (df >= DAY_IN_SECONDS) {
+ jd += 1;
+ df -= DAY_IN_SECONDS;
+ }
+ }
+
+ if (!jd)
+ jd = m_jd(dat);
+ else {
+ jd = m_jd(dat) + jd;
+ canonicalize_jd(nth, jd);
+ }
+
+ if (f_zero_p(nth))
+ nth = m_nth(dat);
+ else
+ nth = f_add(m_nth(dat), nth);
+
+ if (!df && f_zero_p(sf) && !m_of(dat))
+ return d_simple_new_internal(rb_obj_class(self),
+ nth, (int)jd,
+ m_sg(dat),
+ 0, 0, 0,
+ (dat->s.flags | HAVE_JD) &
+ ~(HAVE_CIVIL | HAVE_TIME |
+ COMPLEX_DAT));
+ else
+ return d_complex_new_internal(rb_obj_class(self),
+ nth, (int)jd,
+ df, sf,
+ m_of(dat), m_sg(dat),
+ 0, 0, 0,
+ 0, 0, 0,
+ (dat->c.flags |
+ HAVE_JD | HAVE_DF) &
+ ~(HAVE_CIVIL | HAVE_TIME));
+ }
+ break;
+ default:
+ expect_numeric(other);
+ other = f_to_r(other);
+ if (!k_rational_p(other)) {
+ if (!try_rational) Check_Type(other, T_RATIONAL);
+ try_rational = 0;
+ goto again;
+ }
+ /* fall through */
+ case T_RATIONAL:
+ {
+ VALUE nth, sf, t;
+ int jd, df, s;
+
+ if (wholenum_p(other)) {
+ other = rb_rational_num(other);
+ goto again;
+ }
+
+ if (f_positive_p(other))
+ s = +1;
+ else {
+ s = -1;
+ other = f_negate(other);
+ }
+
+ nth = f_idiv(other, INT2FIX(CM_PERIOD));
+ t = f_mod(other, INT2FIX(CM_PERIOD));
+
+ jd = FIX2INT(f_idiv(t, INT2FIX(1)));
+ t = f_mod(t, INT2FIX(1));
+
+ t = f_mul(t, INT2FIX(DAY_IN_SECONDS));
+ df = FIX2INT(f_idiv(t, INT2FIX(1)));
+ t = f_mod(t, INT2FIX(1));
+
+ sf = f_mul(t, INT2FIX(SECOND_IN_NANOSECONDS));
+
+ if (s < 0) {
+ nth = f_negate(nth);
+ jd = -jd;
+ df = -df;
+ sf = f_negate(sf);
+ }
+
+ if (f_zero_p(sf))
+ sf = m_sf(dat);
+ else {
+ sf = f_add(m_sf(dat), sf);
+ if (f_lt_p(sf, INT2FIX(0))) {
+ df -= 1;
+ sf = f_add(sf, INT2FIX(SECOND_IN_NANOSECONDS));
+ }
+ else if (f_ge_p(sf, INT2FIX(SECOND_IN_NANOSECONDS))) {
+ df += 1;
+ sf = f_sub(sf, INT2FIX(SECOND_IN_NANOSECONDS));
+ }
+ }
+
+ if (!df)
+ df = m_df(dat);
+ else {
+ df = m_df(dat) + df;
+ if (df < 0) {
+ jd -= 1;
+ df += DAY_IN_SECONDS;
+ }
+ else if (df >= DAY_IN_SECONDS) {
+ jd += 1;
+ df -= DAY_IN_SECONDS;
+ }
+ }
+
+ if (!jd)
+ jd = m_jd(dat);
+ else {
+ jd = m_jd(dat) + jd;
+ canonicalize_jd(nth, jd);
+ }
+
+ if (f_zero_p(nth))
+ nth = m_nth(dat);
+ else
+ nth = f_add(m_nth(dat), nth);
+
+ if (!df && f_zero_p(sf) && !m_of(dat))
+ return d_simple_new_internal(rb_obj_class(self),
+ nth, jd,
+ m_sg(dat),
+ 0, 0, 0,
+ (dat->s.flags | HAVE_JD) &
+ ~(HAVE_CIVIL | HAVE_TIME |
+ COMPLEX_DAT));
+ else
+ return d_complex_new_internal(rb_obj_class(self),
+ nth, jd,
+ df, sf,
+ m_of(dat), m_sg(dat),
+ 0, 0, 0,
+ 0, 0, 0,
+ (dat->c.flags |
+ HAVE_JD | HAVE_DF) &
+ ~(HAVE_CIVIL | HAVE_TIME));
+ }
+ break;
+ }
+}
+
+static VALUE
+minus_dd(VALUE self, VALUE other)
+{
+ get_d2(self, other);
+
+ {
+ int d, df;
+ VALUE n, sf, r;
+
+ n = f_sub(m_nth(adat), m_nth(bdat));
+ d = m_jd(adat) - m_jd(bdat);
+ df = m_df(adat) - m_df(bdat);
+ sf = f_sub(m_sf(adat), m_sf(bdat));
+ canonicalize_jd(n, d);
+
+ if (df < 0) {
+ d -= 1;
+ df += DAY_IN_SECONDS;
+ }
+ else if (df >= DAY_IN_SECONDS) {
+ d += 1;
+ df -= DAY_IN_SECONDS;
+ }
+
+ if (f_lt_p(sf, INT2FIX(0))) {
+ df -= 1;
+ sf = f_add(sf, INT2FIX(SECOND_IN_NANOSECONDS));
+ }
+ else if (f_ge_p(sf, INT2FIX(SECOND_IN_NANOSECONDS))) {
+ df += 1;
+ sf = f_sub(sf, INT2FIX(SECOND_IN_NANOSECONDS));
+ }
+
+ if (f_zero_p(n))
+ r = INT2FIX(0);
+ else
+ r = f_mul(n, INT2FIX(CM_PERIOD));
+
+ if (d)
+ r = f_add(r, rb_rational_new1(INT2FIX(d)));
+ if (df)
+ r = f_add(r, isec_to_day(df));
+ if (f_nonzero_p(sf))
+ r = f_add(r, ns_to_day(sf));
+
+ if (RB_TYPE_P(r, T_RATIONAL))
+ return r;
+ return rb_rational_new1(r);
+ }
+}
+
+/*
+ * call-seq:
+ * d - other -> date or rational
+ *
+ * If the other is a date object, returns a Rational
+ * whose value is the difference between the two dates in days.
+ * If the other is a numeric value, returns a date object
+ * pointing +other+ days before self.
+ * If the other is a fractional number,
+ * assumes its precision is at most nanosecond.
+ *
+ * Date.new(2001,2,3) - 1 #=> #<Date: 2001-02-02 ...>
+ * DateTime.new(2001,2,3) - Rational(1,2)
+ * #=> #<DateTime: 2001-02-02T12:00:00+00:00 ...>
+ * Date.new(2001,2,3) - Date.new(2001)
+ * #=> (33/1)
+ * DateTime.new(2001,2,3) - DateTime.new(2001,2,2,12)
+ * #=> (1/2)
+ */
+static VALUE
+d_lite_minus(VALUE self, VALUE other)
+{
+ if (k_date_p(other))
+ return minus_dd(self, other);
+
+ switch (TYPE(other)) {
+ case T_FIXNUM:
+ return d_lite_plus(self, LONG2NUM(-FIX2LONG(other)));
+ case T_FLOAT:
+ return d_lite_plus(self, DBL2NUM(-RFLOAT_VALUE(other)));
+ default:
+ expect_numeric(other);
+ /* fall through */
+ case T_BIGNUM:
+ case T_RATIONAL:
+ return d_lite_plus(self, f_negate(other));
+ }
+}
+
+/*
+ * call-seq:
+ * next_day(n = 1) -> new_date
+ *
+ * Equivalent to Date#+ with argument +n+.
+ */
+static VALUE
+d_lite_next_day(int argc, VALUE *argv, VALUE self)
+{
+ VALUE n;
+
+ rb_scan_args(argc, argv, "01", &n);
+ if (argc < 1)
+ n = INT2FIX(1);
+ return d_lite_plus(self, n);
+}
+
+/*
+ * call-seq:
+ * prev_day(n = 1) -> new_date
+ *
+ * Equivalent to Date#- with argument +n+.
+ */
+static VALUE
+d_lite_prev_day(int argc, VALUE *argv, VALUE self)
+{
+ VALUE n;
+
+ rb_scan_args(argc, argv, "01", &n);
+ if (argc < 1)
+ n = INT2FIX(1);
+ return d_lite_minus(self, n);
+}
+
+/*
+ * call-seq:
+ * d.next -> new_date
+ *
+ * Returns a new \Date object representing the following day:
+ *
+ * d = Date.new(2001, 2, 3)
+ * d.to_s # => "2001-02-03"
+ * d.next.to_s # => "2001-02-04"
+ *
+ */
+static VALUE
+d_lite_next(VALUE self)
+{
+ return d_lite_next_day(0, (VALUE *)NULL, self);
+}
+
+/*
+ * call-seq:
+ * d >> n -> new_date
+ *
+ * Returns a new \Date object representing the date
+ * +n+ months later; +n+ should be a numeric:
+ *
+ * (Date.new(2001, 2, 3) >> 1).to_s # => "2001-03-03"
+ * (Date.new(2001, 2, 3) >> -2).to_s # => "2000-12-03"
+ *
+ * When the same day does not exist for the new month,
+ * the last day of that month is used instead:
+ *
+ * (Date.new(2001, 1, 31) >> 1).to_s # => "2001-02-28"
+ * (Date.new(2001, 1, 31) >> -4).to_s # => "2000-09-30"
+ *
+ * This results in the following, possibly unexpected, behaviors:
+ *
+ * d0 = Date.new(2001, 1, 31)
+ * d1 = d0 >> 1 # => #<Date: 2001-02-28>
+ * d2 = d1 >> 1 # => #<Date: 2001-03-28>
+ *
+ * d0 = Date.new(2001, 1, 31)
+ * d1 = d0 >> 1 # => #<Date: 2001-02-28>
+ * d2 = d1 >> -1 # => #<Date: 2001-01-28>
+ *
+ */
+static VALUE
+d_lite_rshift(VALUE self, VALUE other)
+{
+ VALUE t, y, nth, rjd2;
+ int m, d, rjd;
+ double sg;
+
+ get_d1(self);
+ t = f_add3(f_mul(m_real_year(dat), INT2FIX(12)),
+ INT2FIX(m_mon(dat) - 1),
+ other);
+ if (FIXNUM_P(t)) {
+ long it = FIX2LONG(t);
+ y = LONG2NUM(DIV(it, 12));
+ it = MOD(it, 12);
+ m = (int)it + 1;
+ }
+ else {
+ y = f_idiv(t, INT2FIX(12));
+ t = f_mod(t, INT2FIX(12));
+ m = FIX2INT(t) + 1;
+ }
+ d = m_mday(dat);
+ sg = m_sg(dat);
+
+ while (1) {
+ int ry, rm, rd, ns;
+
+ if (valid_civil_p(y, m, d, sg,
+ &nth, &ry,
+ &rm, &rd, &rjd, &ns))
+ break;
+ if (--d < 1)
+ rb_raise(eDateError, "invalid date");
+ }
+ encode_jd(nth, rjd, &rjd2);
+ return d_lite_plus(self, f_sub(rjd2, m_real_local_jd(dat)));
+}
+
+/*
+ * call-seq:
+ * d << n -> date
+ *
+ * Returns a new \Date object representing the date
+ * +n+ months earlier; +n+ should be a numeric:
+ *
+ * (Date.new(2001, 2, 3) << 1).to_s # => "2001-01-03"
+ * (Date.new(2001, 2, 3) << -2).to_s # => "2001-04-03"
+ *
+ * When the same day does not exist for the new month,
+ * the last day of that month is used instead:
+ *
+ * (Date.new(2001, 3, 31) << 1).to_s # => "2001-02-28"
+ * (Date.new(2001, 3, 31) << -6).to_s # => "2001-09-30"
+ *
+ * This results in the following, possibly unexpected, behaviors:
+ *
+ * d0 = Date.new(2001, 3, 31)
+ * d0 << 2 # => #<Date: 2001-01-31>
+ * d0 << 1 << 1 # => #<Date: 2001-01-28>
+ *
+ * d0 = Date.new(2001, 3, 31)
+ * d1 = d0 << 1 # => #<Date: 2001-02-28>
+ * d2 = d1 << -1 # => #<Date: 2001-03-28>
+ *
+ */
+static VALUE
+d_lite_lshift(VALUE self, VALUE other)
+{
+ expect_numeric(other);
+ return d_lite_rshift(self, f_negate(other));
+}
+
+/*
+ * call-seq:
+ * next_month(n = 1) -> new_date
+ *
+ * Equivalent to #>> with argument +n+.
+ */
+static VALUE
+d_lite_next_month(int argc, VALUE *argv, VALUE self)
+{
+ VALUE n;
+
+ rb_scan_args(argc, argv, "01", &n);
+ if (argc < 1)
+ n = INT2FIX(1);
+ return d_lite_rshift(self, n);
+}
+
+/*
+ * call-seq:
+ * prev_month(n = 1) -> new_date
+ *
+ * Equivalent to #<< with argument +n+.
+ */
+static VALUE
+d_lite_prev_month(int argc, VALUE *argv, VALUE self)
+{
+ VALUE n;
+
+ rb_scan_args(argc, argv, "01", &n);
+ if (argc < 1)
+ n = INT2FIX(1);
+ return d_lite_lshift(self, n);
+}
+
+/*
+ * call-seq:
+ * next_year(n = 1) -> new_date
+ *
+ * Equivalent to #>> with argument <tt>n * 12</tt>.
+ */
+static VALUE
+d_lite_next_year(int argc, VALUE *argv, VALUE self)
+{
+ VALUE n;
+
+ rb_scan_args(argc, argv, "01", &n);
+ if (argc < 1)
+ n = INT2FIX(1);
+ return d_lite_rshift(self, f_mul(n, INT2FIX(12)));
+}
+
+/*
+ * call-seq:
+ * prev_year(n = 1) -> new_date
+ *
+ * Equivalent to #<< with argument <tt>n * 12</tt>.
+ */
+static VALUE
+d_lite_prev_year(int argc, VALUE *argv, VALUE self)
+{
+ VALUE n;
+
+ rb_scan_args(argc, argv, "01", &n);
+ if (argc < 1)
+ n = INT2FIX(1);
+ return d_lite_lshift(self, f_mul(n, INT2FIX(12)));
+}
+
+static VALUE d_lite_cmp(VALUE, VALUE);
+
+/*
+ * call-seq:
+ * step(limit, step = 1){|date| ... } -> self
+ *
+ * Calls the block with specified dates;
+ * returns +self+.
+ *
+ * - The first +date+ is +self+.
+ * - Each successive +date+ is <tt>date + step</tt>,
+ * where +step+ is the numeric step size in days.
+ * - The last date is the last one that is before or equal to +limit+,
+ * which should be a \Date object.
+ *
+ * Example:
+ *
+ * limit = Date.new(2001, 12, 31)
+ * Date.new(2001).step(limit){|date| p date.to_s if date.mday == 31 }
+ *
+ * Output:
+ *
+ * "2001-01-31"
+ * "2001-03-31"
+ * "2001-05-31"
+ * "2001-07-31"
+ * "2001-08-31"
+ * "2001-10-31"
+ * "2001-12-31"
+ *
+ * Returns an Enumerator if no block is given.
+ */
+static VALUE
+d_lite_step(int argc, VALUE *argv, VALUE self)
+{
+ VALUE limit, step, date;
+ int c;
+
+ rb_scan_args(argc, argv, "11", &limit, &step);
+
+ if (argc < 2)
+ step = INT2FIX(1);
+
+#if 0
+ if (f_zero_p(step))
+ rb_raise(rb_eArgError, "step can't be 0");
+#endif
+
+ RETURN_ENUMERATOR(self, argc, argv);
+
+ date = self;
+ c = f_cmp(step, INT2FIX(0));
+ if (c < 0) {
+ while (FIX2INT(d_lite_cmp(date, limit)) >= 0) {
+ rb_yield(date);
+ date = d_lite_plus(date, step);
+ }
+ }
+ else if (c == 0) {
+ while (1)
+ rb_yield(date);
+ }
+ else /* if (c > 0) */ {
+ while (FIX2INT(d_lite_cmp(date, limit)) <= 0) {
+ rb_yield(date);
+ date = d_lite_plus(date, step);
+ }
+ }
+ return self;
+}
+
+/*
+ * call-seq:
+ * upto(max){|date| ... } -> self
+ *
+ * Equivalent to #step with arguments +max+ and +1+.
+ */
+static VALUE
+d_lite_upto(VALUE self, VALUE max)
+{
+ VALUE date;
+
+ RETURN_ENUMERATOR(self, 1, &max);
+
+ date = self;
+ while (FIX2INT(d_lite_cmp(date, max)) <= 0) {
+ rb_yield(date);
+ date = d_lite_plus(date, INT2FIX(1));
+ }
+ return self;
+}
+
+/*
+ * call-seq:
+ * downto(min){|date| ... } -> self
+ *
+ * Equivalent to #step with arguments +min+ and <tt>-1</tt>.
+ */
+static VALUE
+d_lite_downto(VALUE self, VALUE min)
+{
+ VALUE date;
+
+ RETURN_ENUMERATOR(self, 1, &min);
+
+ date = self;
+ while (FIX2INT(d_lite_cmp(date, min)) >= 0) {
+ rb_yield(date);
+ date = d_lite_plus(date, INT2FIX(-1));
+ }
+ return self;
+}
+
+static VALUE
+cmp_gen(VALUE self, VALUE other)
+{
+ get_d1(self);
+
+ if (k_numeric_p(other))
+ return INT2FIX(f_cmp(m_ajd(dat), other));
+ else if (k_date_p(other))
+ return INT2FIX(f_cmp(m_ajd(dat), f_ajd(other)));
+ return rb_num_coerce_cmp(self, other, id_cmp);
+}
+
+static VALUE
+cmp_dd(VALUE self, VALUE other)
+{
+ get_d2(self, other);
+
+ {
+ VALUE a_nth, b_nth,
+ a_sf, b_sf;
+ int a_jd, b_jd,
+ a_df, b_df;
+
+ m_canonicalize_jd(self, adat);
+ m_canonicalize_jd(other, bdat);
+ a_nth = m_nth(adat);
+ b_nth = m_nth(bdat);
+ if (f_eqeq_p(a_nth, b_nth)) {
+ a_jd = m_jd(adat);
+ b_jd = m_jd(bdat);
+ if (a_jd == b_jd) {
+ a_df = m_df(adat);
+ b_df = m_df(bdat);
+ if (a_df == b_df) {
+ a_sf = m_sf(adat);
+ b_sf = m_sf(bdat);
+ if (f_eqeq_p(a_sf, b_sf)) {
+ return INT2FIX(0);
+ }
+ else if (f_lt_p(a_sf, b_sf)) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+ else if (a_df < b_df) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+ else if (a_jd < b_jd) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+ else if (f_lt_p(a_nth, b_nth)) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+}
+
+/*
+ * call-seq:
+ * self <=> other -> -1, 0, 1 or nil
+ *
+ * Compares +self+ and +other+, returning:
+ *
+ * - <tt>-1</tt> if +other+ is larger.
+ * - <tt>0</tt> if the two are equal.
+ * - <tt>1</tt> if +other+ is smaller.
+ * - +nil+ if the two are incomparable.
+ *
+ * Argument +other+ may be:
+ *
+ * - Another \Date object:
+ *
+ * d = Date.new(2022, 7, 27) # => #<Date: 2022-07-27 ((2459788j,0s,0n),+0s,2299161j)>
+ * prev_date = d.prev_day # => #<Date: 2022-07-26 ((2459787j,0s,0n),+0s,2299161j)>
+ * next_date = d.next_day # => #<Date: 2022-07-28 ((2459789j,0s,0n),+0s,2299161j)>
+ * d <=> next_date # => -1
+ * d <=> d # => 0
+ * d <=> prev_date # => 1
+ *
+ * - A DateTime object:
+ *
+ * d <=> DateTime.new(2022, 7, 26) # => 1
+ * d <=> DateTime.new(2022, 7, 27) # => 0
+ * d <=> DateTime.new(2022, 7, 28) # => -1
+ *
+ * - A numeric (compares <tt>self.ajd</tt> to +other+):
+ *
+ * d <=> 2459788 # => -1
+ * d <=> 2459787 # => 1
+ * d <=> 2459786 # => 1
+ * d <=> d.ajd # => 0
+ *
+ * - Any other object:
+ *
+ * d <=> Object.new # => nil
+ *
+ */
+static VALUE
+d_lite_cmp(VALUE self, VALUE other)
+{
+ if (!k_date_p(other))
+ return cmp_gen(self, other);
+
+ {
+ get_d2(self, other);
+
+ if (!(simple_dat_p(adat) && simple_dat_p(bdat) &&
+ m_gregorian_p(adat) == m_gregorian_p(bdat)))
+ return cmp_dd(self, other);
+
+ {
+ VALUE a_nth, b_nth;
+ int a_jd, b_jd;
+
+ m_canonicalize_jd(self, adat);
+ m_canonicalize_jd(other, bdat);
+ a_nth = m_nth(adat);
+ b_nth = m_nth(bdat);
+ if (f_eqeq_p(a_nth, b_nth)) {
+ a_jd = m_jd(adat);
+ b_jd = m_jd(bdat);
+ if (a_jd == b_jd) {
+ return INT2FIX(0);
+ }
+ else if (a_jd < b_jd) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+ else if (f_lt_p(a_nth, b_nth)) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+ }
+}
+
+static VALUE
+equal_gen(VALUE self, VALUE other)
+{
+ get_d1(self);
+
+ if (k_numeric_p(other))
+ return f_eqeq_p(m_real_local_jd(dat), other);
+ else if (k_date_p(other))
+ return f_eqeq_p(m_real_local_jd(dat), f_jd(other));
+ return rb_num_coerce_cmp(self, other, id_eqeq_p);
+}
+
+/*
+ * call-seq:
+ * self === other -> true, false, or nil.
+ *
+ * Returns +true+ if +self+ and +other+ represent the same date,
+ * +false+ if not, +nil+ if the two are not comparable.
+ *
+ * Argument +other+ may be:
+ *
+ * - Another \Date object:
+ *
+ * d = Date.new(2022, 7, 27) # => #<Date: 2022-07-27 ((2459788j,0s,0n),+0s,2299161j)>
+ * prev_date = d.prev_day # => #<Date: 2022-07-26 ((2459787j,0s,0n),+0s,2299161j)>
+ * next_date = d.next_day # => #<Date: 2022-07-28 ((2459789j,0s,0n),+0s,2299161j)>
+ * d === prev_date # => false
+ * d === d # => true
+ * d === next_date # => false
+ *
+ * - A DateTime object:
+ *
+ * d === DateTime.new(2022, 7, 26) # => false
+ * d === DateTime.new(2022, 7, 27) # => true
+ * d === DateTime.new(2022, 7, 28) # => false
+ *
+ * - A numeric (compares <tt>self.jd</tt> to +other+):
+ *
+ * d === 2459788 # => true
+ * d === 2459787 # => false
+ * d === 2459786 # => false
+ * d === d.jd # => true
+ *
+ * - An object not comparable:
+ *
+ * d === Object.new # => nil
+ *
+ */
+static VALUE
+d_lite_equal(VALUE self, VALUE other)
+{
+ if (!k_date_p(other))
+ return equal_gen(self, other);
+
+ {
+ get_d2(self, other);
+
+ if (!(m_gregorian_p(adat) == m_gregorian_p(bdat)))
+ return equal_gen(self, other);
+
+ {
+ VALUE a_nth, b_nth;
+ int a_jd, b_jd;
+
+ m_canonicalize_jd(self, adat);
+ m_canonicalize_jd(other, bdat);
+ a_nth = m_nth(adat);
+ b_nth = m_nth(bdat);
+ a_jd = m_local_jd(adat);
+ b_jd = m_local_jd(bdat);
+ if (f_eqeq_p(a_nth, b_nth) &&
+ a_jd == b_jd)
+ return Qtrue;
+ return Qfalse;
+ }
+ }
+}
+
+/* :nodoc: */
+static VALUE
+d_lite_eql_p(VALUE self, VALUE other)
+{
+ if (!k_date_p(other))
+ return Qfalse;
+ return f_zero_p(d_lite_cmp(self, other));
+}
+
+/* :nodoc: */
+static VALUE
+d_lite_hash(VALUE self)
+{
+ st_index_t v, h[5];
+ VALUE nth;
+
+ get_d1(self);
+ nth = m_nth(dat);
+
+ if (FIXNUM_P(nth)) {
+ h[0] = 0;
+ h[1] = (st_index_t)nth;
+ } else {
+ h[0] = 1;
+ h[1] = (st_index_t)FIX2LONG(rb_hash(nth));
+ }
+
+ h[2] = m_jd(dat);
+ h[3] = m_df(dat);
+ h[4] = m_sf(dat);
+
+ v = rb_memhash(h, sizeof(h));
+ return ST2FIX(v);
+}
+
+#include "date_tmx.h"
+static void set_tmx(VALUE, struct tmx *);
+static VALUE strftimev(const char *, VALUE,
+ void (*)(VALUE, struct tmx *));
+
+/*
+ * call-seq:
+ * to_s -> string
+ *
+ * Returns a string representation of the date in +self+
+ * in {ISO 8601 extended date format}[rdoc-ref:language/strftime_formatting.rdoc@ISO+8601+Format+Specifications]
+ * (<tt>'%Y-%m-%d'</tt>):
+ *
+ * Date.new(2001, 2, 3).to_s # => "2001-02-03"
+ *
+ */
+static VALUE
+d_lite_to_s(VALUE self)
+{
+ return strftimev("%Y-%m-%d", self, set_tmx);
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+mk_inspect_raw(union DateData *x, VALUE klass)
+{
+ char flags[6];
+
+ flags[0] = (x->flags & COMPLEX_DAT) ? 'C' : 'S';
+ flags[1] = (x->flags & HAVE_JD) ? 'j' : '-';
+ flags[2] = (x->flags & HAVE_DF) ? 'd' : '-';
+ flags[3] = (x->flags & HAVE_CIVIL) ? 'c' : '-';
+ flags[4] = (x->flags & HAVE_TIME) ? 't' : '-';
+ flags[5] = '\0';
+
+ if (simple_dat_p(x)) {
+ return rb_enc_sprintf(rb_usascii_encoding(),
+ "#<%"PRIsVALUE": "
+ "(%+"PRIsVALUE"th,%dj),+0s,%.0fj; "
+ "%dy%dm%dd; %s>",
+ klass,
+ x->s.nth, x->s.jd, x->s.sg,
+#ifndef USE_PACK
+ x->s.year, x->s.mon, x->s.mday,
+#else
+ x->s.year,
+ EX_MON(x->s.pc), EX_MDAY(x->s.pc),
+#endif
+ flags);
+ }
+ else {
+ return rb_enc_sprintf(rb_usascii_encoding(),
+ "#<%"PRIsVALUE": "
+ "(%+"PRIsVALUE"th,%dj,%ds,%+"PRIsVALUE"n),"
+ "%+ds,%.0fj; "
+ "%dy%dm%dd %dh%dm%ds; %s>",
+ klass,
+ x->c.nth, x->c.jd, x->c.df, x->c.sf,
+ x->c.of, x->c.sg,
+#ifndef USE_PACK
+ x->c.year, x->c.mon, x->c.mday,
+ x->c.hour, x->c.min, x->c.sec,
+#else
+ x->c.year,
+ EX_MON(x->c.pc), EX_MDAY(x->c.pc),
+ EX_HOUR(x->c.pc), EX_MIN(x->c.pc),
+ EX_SEC(x->c.pc),
+#endif
+ flags);
+ }
+}
+
+/* :nodoc: */
+static VALUE
+d_lite_inspect_raw(VALUE self)
+{
+ get_d1(self);
+ return mk_inspect_raw(dat, rb_obj_class(self));
+}
+#endif
+
+static VALUE
+mk_inspect(union DateData *x, VALUE klass, VALUE to_s)
+{
+ return rb_enc_sprintf(rb_usascii_encoding(),
+ "#<%"PRIsVALUE": %"PRIsVALUE" "
+ "((%+"PRIsVALUE"j,%ds,%+"PRIsVALUE"n),%+ds,%.0fj)>",
+ klass, to_s,
+ m_real_jd(x), m_df(x), m_sf(x),
+ m_of(x), m_sg(x));
+}
+
+/*
+ * call-seq:
+ * inspect -> string
+ *
+ * Returns a string representation of +self+:
+ *
+ * Date.new(2001, 2, 3).inspect
+ * # => "#<Date: 2001-02-03 ((2451944j,0s,0n),+0s,2299161j)>"
+ *
+ */
+static VALUE
+d_lite_inspect(VALUE self)
+{
+ get_d1(self);
+ return mk_inspect(dat, rb_obj_class(self), self);
+}
+
+#include <errno.h>
+#include "date_tmx.h"
+
+size_t date_strftime(char *s, size_t maxsize, const char *format,
+ const struct tmx *tmx);
+
+#define SMALLBUF 100
+static size_t
+date_strftime_alloc(char **buf, const char *format,
+ struct tmx *tmx)
+{
+ size_t size, len, flen;
+
+ (*buf)[0] = '\0';
+ flen = strlen(format);
+ if (flen == 0) {
+ return 0;
+ }
+ errno = 0;
+ len = date_strftime(*buf, SMALLBUF, format, tmx);
+ if (len != 0 || (**buf == '\0' && errno != ERANGE)) return len;
+ for (size=1024; ; size*=2) {
+ *buf = xmalloc(size);
+ (*buf)[0] = '\0';
+ len = date_strftime(*buf, size, format, tmx);
+ /*
+ * buflen can be zero EITHER because there's not enough
+ * room in the string, or because the control command
+ * goes to the empty string. Make a reasonable guess that
+ * if the buffer is 1024 times bigger than the length of the
+ * format string, it's not failing for lack of room.
+ */
+ if (len > 0) break;
+ xfree(*buf);
+ if (size >= 1024 * flen) {
+ rb_sys_fail(format);
+ break;
+ }
+ }
+ return len;
+}
+
+static VALUE
+tmx_m_secs(union DateData *x)
+{
+ VALUE s;
+ int df;
+
+ s = day_to_sec(f_sub(m_real_jd(x),
+ UNIX_EPOCH_IN_CJD));
+ if (simple_dat_p(x))
+ return s;
+ df = m_df(x);
+ if (df)
+ s = f_add(s, INT2FIX(df));
+ return s;
+}
+
+#define MILLISECOND_IN_NANOSECONDS 1000000
+
+static VALUE
+tmx_m_msecs(union DateData *x)
+{
+ VALUE s, sf;
+
+ s = sec_to_ms(tmx_m_secs(x));
+ if (simple_dat_p(x))
+ return s;
+ sf = m_sf(x);
+ if (f_nonzero_p(sf))
+ s = f_add(s, f_div(sf, INT2FIX(MILLISECOND_IN_NANOSECONDS)));
+ return s;
+}
+
+static int
+tmx_m_of(union DateData *x)
+{
+ return m_of(x);
+}
+
+static char *
+tmx_m_zone(union DateData *x)
+{
+ VALUE zone = m_zone(x);
+ /* TODO: fix potential dangling pointer */
+ return RSTRING_PTR(zone);
+}
+
+static const struct tmx_funcs tmx_funcs = {
+ (VALUE (*)(void *))m_real_year,
+ (int (*)(void *))m_yday,
+ (int (*)(void *))m_mon,
+ (int (*)(void *))m_mday,
+ (VALUE (*)(void *))m_real_cwyear,
+ (int (*)(void *))m_cweek,
+ (int (*)(void *))m_cwday,
+ (int (*)(void *))m_wnum0,
+ (int (*)(void *))m_wnum1,
+ (int (*)(void *))m_wday,
+ (int (*)(void *))m_hour,
+ (int (*)(void *))m_min,
+ (int (*)(void *))m_sec,
+ (VALUE (*)(void *))m_sf_in_sec,
+ (VALUE (*)(void *))tmx_m_secs,
+ (VALUE (*)(void *))tmx_m_msecs,
+ (int (*)(void *))tmx_m_of,
+ (char *(*)(void *))tmx_m_zone
+};
+
+static void
+set_tmx(VALUE self, struct tmx *tmx)
+{
+ get_d1(self);
+ tmx->dat = (void *)dat;
+ tmx->funcs = &tmx_funcs;
+}
+
+static VALUE
+date_strftime_internal(int argc, VALUE *argv, VALUE self,
+ const char *default_fmt,
+ void (*func)(VALUE, struct tmx *))
+{
+ VALUE vfmt;
+ const char *fmt;
+ long len;
+ char buffer[SMALLBUF], *buf = buffer;
+ struct tmx tmx;
+ VALUE str;
+
+ rb_scan_args(argc, argv, "01", &vfmt);
+
+ if (argc < 1)
+ vfmt = rb_usascii_str_new2(default_fmt);
+ else {
+ StringValue(vfmt);
+ if (!rb_enc_str_asciicompat_p(vfmt)) {
+ rb_raise(rb_eArgError,
+ "format should have ASCII compatible encoding");
+ }
+ }
+ fmt = RSTRING_PTR(vfmt);
+ len = RSTRING_LEN(vfmt);
+ (*func)(self, &tmx);
+ if (memchr(fmt, '\0', len)) {
+ /* Ruby string may contain \0's. */
+ const char *p = fmt, *pe = fmt + len;
+
+ str = rb_str_new(0, 0);
+ while (p < pe) {
+ len = date_strftime_alloc(&buf, p, &tmx);
+ rb_str_cat(str, buf, len);
+ p += strlen(p);
+ if (buf != buffer) {
+ xfree(buf);
+ buf = buffer;
+ }
+ for (fmt = p; p < pe && !*p; ++p);
+ if (p > fmt) rb_str_cat(str, fmt, p - fmt);
+ }
+ rb_enc_copy(str, vfmt);
+ return str;
+ }
+ else
+ len = date_strftime_alloc(&buf, fmt, &tmx);
+
+ str = rb_str_new(buf, len);
+ if (buf != buffer) xfree(buf);
+ rb_enc_copy(str, vfmt);
+ return str;
+}
+
+/*
+ * call-seq:
+ * strftime(format = '%F') -> string
+ *
+ * Returns a string representation of the date in +self+,
+ * formatted according the given +format+:
+ *
+ * Date.new(2001, 2, 3).strftime # => "2001-02-03"
+ *
+ * For other formats, see
+ * {Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc].
+ *
+ */
+static VALUE
+d_lite_strftime(int argc, VALUE *argv, VALUE self)
+{
+ return date_strftime_internal(argc, argv, self,
+ "%Y-%m-%d", set_tmx);
+}
+
+static VALUE
+strftimev(const char *fmt, VALUE self,
+ void (*func)(VALUE, struct tmx *))
+{
+ char buffer[SMALLBUF], *buf = buffer;
+ struct tmx tmx;
+ long len;
+ VALUE str;
+
+ (*func)(self, &tmx);
+ len = date_strftime_alloc(&buf, fmt, &tmx);
+ RB_GC_GUARD(self);
+ str = rb_usascii_str_new(buf, len);
+ if (buf != buffer) xfree(buf);
+ return str;
+}
+
+/*
+ * call-seq:
+ * asctime -> string
+ *
+ * Equivalent to #strftime with argument <tt>'%a %b %e %T %Y'</tt>
+ * (or its {shorthand form}[rdoc-ref:language/strftime_formatting.rdoc@Shorthand+Conversion+Specifiers]
+ * <tt>'%c'</tt>):
+ *
+ * Date.new(2001, 2, 3).asctime # => "Sat Feb 3 00:00:00 2001"
+ *
+ * See {asctime}[https://man7.org/linux/man-pages/man3/asctime.3p.html].
+ *
+ */
+static VALUE
+d_lite_asctime(VALUE self)
+{
+ return strftimev("%a %b %e %H:%M:%S %Y", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * iso8601 -> string
+ *
+ * Equivalent to #strftime with argument <tt>'%Y-%m-%d'</tt>
+ * (or its {shorthand form}[rdoc-ref:language/strftime_formatting.rdoc@Shorthand+Conversion+Specifiers]
+ * <tt>'%F'</tt>);
+ *
+ * Date.new(2001, 2, 3).iso8601 # => "2001-02-03"
+ *
+ */
+static VALUE
+d_lite_iso8601(VALUE self)
+{
+ return strftimev("%Y-%m-%d", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * rfc3339 -> string
+ *
+ * Equivalent to #strftime with argument <tt>'%FT%T%:z'</tt>;
+ * see {Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc]:
+ *
+ * Date.new(2001, 2, 3).rfc3339 # => "2001-02-03T00:00:00+00:00"
+ *
+ */
+static VALUE
+d_lite_rfc3339(VALUE self)
+{
+ return strftimev("%Y-%m-%dT%H:%M:%S%:z", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * rfc2822 -> string
+ *
+ * Equivalent to #strftime with argument <tt>'%a, %-d %b %Y %T %z'</tt>;
+ * see {Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc]:
+ *
+ * Date.new(2001, 2, 3).rfc2822 # => "Sat, 3 Feb 2001 00:00:00 +0000"
+ *
+ */
+static VALUE
+d_lite_rfc2822(VALUE self)
+{
+ return strftimev("%a, %-d %b %Y %T %z", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * httpdate -> string
+ *
+ * Equivalent to #strftime with argument <tt>'%a, %d %b %Y %T GMT'</tt>;
+ * see {Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc]:
+ *
+ * Date.new(2001, 2, 3).httpdate # => "Sat, 03 Feb 2001 00:00:00 GMT"
+ *
+ */
+static VALUE
+d_lite_httpdate(VALUE self)
+{
+ volatile VALUE dup = dup_obj_with_new_offset(self, 0);
+ return strftimev("%a, %d %b %Y %T GMT", dup, set_tmx);
+}
+
+enum {
+ DECIMAL_SIZE_OF_LONG = DECIMAL_SIZE_OF_BITS(CHAR_BIT*sizeof(long)),
+ JISX0301_DATE_SIZE = DECIMAL_SIZE_OF_LONG+8
+};
+
+static const char *
+jisx0301_date_format(char *fmt, size_t size, VALUE jd, VALUE y)
+{
+ if (FIXNUM_P(jd)) {
+ long d = FIX2INT(jd);
+ long s;
+ char c;
+ if (d < 2405160)
+ return "%Y-%m-%d";
+ if (d < 2419614) {
+ c = 'M';
+ s = 1867;
+ }
+ else if (d < 2424875) {
+ c = 'T';
+ s = 1911;
+ }
+ else if (d < 2447535) {
+ c = 'S';
+ s = 1925;
+ }
+ else if (d < 2458605) {
+ c = 'H';
+ s = 1988;
+ }
+ else {
+ c = 'R';
+ s = 2018;
+ }
+ snprintf(fmt, size, "%c%02ld" ".%%m.%%d", c, FIX2INT(y) - s);
+ return fmt;
+ }
+ return "%Y-%m-%d";
+}
+
+/*
+ * call-seq:
+ * jisx0301 -> string
+ *
+ * Returns a string representation of the date in +self+
+ * in JIS X 0301 format.
+ *
+ * Date.new(2001, 2, 3).jisx0301 # => "H13.02.03"
+ *
+ */
+static VALUE
+d_lite_jisx0301(VALUE self)
+{
+ char fmtbuf[JISX0301_DATE_SIZE];
+ const char *fmt;
+
+ get_d1(self);
+ fmt = jisx0301_date_format(fmtbuf, sizeof(fmtbuf),
+ m_real_local_jd(dat),
+ m_real_year(dat));
+ return strftimev(fmt, self, set_tmx);
+}
+
+static VALUE
+deconstruct_keys(VALUE self, VALUE keys, int is_datetime)
+{
+ VALUE h = rb_hash_new();
+ long i;
+
+ get_d1(self);
+
+ if (NIL_P(keys)) {
+ rb_hash_aset(h, sym_year, m_real_year(dat));
+ rb_hash_aset(h, sym_month, INT2FIX(m_mon(dat)));
+ rb_hash_aset(h, sym_day, INT2FIX(m_mday(dat)));
+ rb_hash_aset(h, sym_yday, INT2FIX(m_yday(dat)));
+ rb_hash_aset(h, sym_wday, INT2FIX(m_wday(dat)));
+ if (is_datetime) {
+ rb_hash_aset(h, sym_hour, INT2FIX(m_hour(dat)));
+ rb_hash_aset(h, sym_min, INT2FIX(m_min(dat)));
+ rb_hash_aset(h, sym_sec, INT2FIX(m_sec(dat)));
+ rb_hash_aset(h, sym_sec_fraction, m_sf_in_sec(dat));
+ rb_hash_aset(h, sym_zone, m_zone(dat));
+ }
+
+ return h;
+ }
+ if (!RB_TYPE_P(keys, T_ARRAY)) {
+ rb_raise(rb_eTypeError,
+ "wrong argument type %"PRIsVALUE" (expected Array or nil)",
+ rb_obj_class(keys));
+
+ }
+
+ for (i=0; i<RARRAY_LEN(keys); i++) {
+ VALUE key = RARRAY_AREF(keys, i);
+
+ if (sym_year == key) rb_hash_aset(h, key, m_real_year(dat));
+ if (sym_month == key) rb_hash_aset(h, key, INT2FIX(m_mon(dat)));
+ if (sym_day == key) rb_hash_aset(h, key, INT2FIX(m_mday(dat)));
+ if (sym_yday == key) rb_hash_aset(h, key, INT2FIX(m_yday(dat)));
+ if (sym_wday == key) rb_hash_aset(h, key, INT2FIX(m_wday(dat)));
+ if (is_datetime) {
+ if (sym_hour == key) rb_hash_aset(h, key, INT2FIX(m_hour(dat)));
+ if (sym_min == key) rb_hash_aset(h, key, INT2FIX(m_min(dat)));
+ if (sym_sec == key) rb_hash_aset(h, key, INT2FIX(m_sec(dat)));
+ if (sym_sec_fraction == key) rb_hash_aset(h, key, m_sf_in_sec(dat));
+ if (sym_zone == key) rb_hash_aset(h, key, m_zone(dat));
+ }
+ }
+ return h;
+}
+
+/*
+ * call-seq:
+ * deconstruct_keys(array_of_names_or_nil) -> hash
+ *
+ * Returns a hash of the name/value pairs, to use in pattern matching.
+ * Possible keys are: <tt>:year</tt>, <tt>:month</tt>, <tt>:day</tt>,
+ * <tt>:wday</tt>, <tt>:yday</tt>.
+ *
+ * Possible usages:
+ *
+ * d = Date.new(2022, 10, 5)
+ *
+ * if d in wday: 3, day: ..7 # uses deconstruct_keys underneath
+ * puts "first Wednesday of the month"
+ * end
+ * #=> prints "first Wednesday of the month"
+ *
+ * case d
+ * in year: ...2022
+ * puts "too old"
+ * in month: ..9
+ * puts "quarter 1-3"
+ * in wday: 1..5, month:
+ * puts "working day in month #{month}"
+ * end
+ * #=> prints "working day in month 10"
+ *
+ * Note that deconstruction by pattern can also be combined with class check:
+ *
+ * if d in Date(wday: 3, day: ..7)
+ * puts "first Wednesday of the month"
+ * end
+ *
+ */
+static VALUE
+d_lite_deconstruct_keys(VALUE self, VALUE keys)
+{
+ return deconstruct_keys(self, keys, /* is_datetime=false */ 0);
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+d_lite_marshal_dump_old(VALUE self)
+{
+ VALUE a;
+
+ get_d1(self);
+
+ a = rb_ary_new3(3,
+ m_ajd(dat),
+ m_of_in_day(dat),
+ DBL2NUM(m_sg(dat)));
+
+ rb_copy_generic_ivar(a, self);
+
+ return a;
+}
+#endif
+
+/* :nodoc: */
+static VALUE
+d_lite_marshal_dump(VALUE self)
+{
+ VALUE a;
+
+ get_d1(self);
+
+ a = rb_ary_new3(6,
+ m_nth(dat),
+ INT2FIX(m_jd(dat)),
+ INT2FIX(m_df(dat)),
+ m_sf(dat),
+ INT2FIX(m_of(dat)),
+ DBL2NUM(m_sg(dat)));
+
+
+ rb_copy_generic_ivar(a, self);
+
+ return a;
+}
+
+/* :nodoc: */
+static VALUE
+d_lite_marshal_load(VALUE self, VALUE a)
+{
+ VALUE nth, sf;
+ int jd, df, of;
+ double sg;
+
+ get_d1(self);
+
+ rb_check_frozen(self);
+
+ if (!RB_TYPE_P(a, T_ARRAY))
+ rb_raise(rb_eTypeError, "expected an array");
+
+ switch (RARRAY_LEN(a)) {
+ case 2: /* 1.6.x */
+ case 3: /* 1.8.x, 1.9.2 */
+ {
+ VALUE ajd, vof, vsg;
+
+ if (RARRAY_LEN(a) == 2) {
+ ajd = f_sub(RARRAY_AREF(a, 0), half_days_in_day);
+ vof = INT2FIX(0);
+ vsg = RARRAY_AREF(a, 1);
+ if (!k_numeric_p(vsg))
+ vsg = DBL2NUM(RTEST(vsg) ? GREGORIAN : JULIAN);
+ }
+ else {
+ ajd = RARRAY_AREF(a, 0);
+ vof = RARRAY_AREF(a, 1);
+ vsg = RARRAY_AREF(a, 2);
+ }
+
+ old_to_new(ajd, vof, vsg,
+ &nth, &jd, &df, &sf, &of, &sg);
+ }
+ break;
+ case 6:
+ {
+ nth = RARRAY_AREF(a, 0);
+ jd = NUM2INT(RARRAY_AREF(a, 1));
+ df = NUM2INT(RARRAY_AREF(a, 2));
+ sf = RARRAY_AREF(a, 3);
+ of = NUM2INT(RARRAY_AREF(a, 4));
+ sg = NUM2DBL(RARRAY_AREF(a, 5));
+ }
+ break;
+ default:
+ rb_raise(rb_eTypeError, "invalid size");
+ break;
+ }
+
+ if (simple_dat_p(dat)) {
+ if (df || !f_zero_p(sf) || of) {
+ /* loading a fractional date; promote to complex */
+ dat = ruby_xrealloc(dat, sizeof(struct ComplexDateData));
+ RTYPEDDATA(self)->data = dat;
+ goto complex_data;
+ }
+ set_to_simple(self, &dat->s, nth, jd, sg, 0, 0, 0, HAVE_JD);
+ } else {
+ complex_data:
+ set_to_complex(self, &dat->c, nth, jd, df, sf, of, sg,
+ 0, 0, 0, 0, 0, 0,
+ HAVE_JD | HAVE_DF);
+ }
+
+ rb_copy_generic_ivar(self, a);
+
+ return self;
+}
+
+/* :nodoc: */
+static VALUE
+date_s__load(VALUE klass, VALUE s)
+{
+ VALUE a, obj;
+
+ a = rb_marshal_load(s);
+ obj = d_lite_s_alloc(klass);
+ return d_lite_marshal_load(obj, a);
+}
+
+/* datetime */
+
+/*
+ * call-seq:
+ * DateTime.jd([jd=0[, hour=0[, minute=0[, second=0[, offset=0[, start=Date::ITALY]]]]]]) -> datetime
+ *
+ * Creates a DateTime object denoting the given chronological Julian
+ * day number.
+ *
+ * DateTime.jd(2451944) #=> #<DateTime: 2001-02-03T00:00:00+00:00 ...>
+ * DateTime.jd(2451945) #=> #<DateTime: 2001-02-04T00:00:00+00:00 ...>
+ * DateTime.jd(Rational('0.5'))
+ * #=> #<DateTime: -4712-01-01T12:00:00+00:00 ...>
+ */
+static VALUE
+datetime_s_jd(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vjd, vh, vmin, vs, vof, vsg, jd, fr, fr2, ret;
+ int h, min, s, rof;
+ double sg;
+
+ rb_scan_args(argc, argv, "06", &vjd, &vh, &vmin, &vs, &vof, &vsg);
+
+ jd = INT2FIX(0);
+
+ h = min = s = 0;
+ fr2 = INT2FIX(0);
+ rof = 0;
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 6:
+ val2sg(vsg, sg);
+ case 5:
+ val2off(vof, rof);
+ case 4:
+ check_numeric(vs, "second");
+ num2int_with_frac(s, positive_inf);
+ case 3:
+ check_numeric(vmin, "minute");
+ num2int_with_frac(min, 3);
+ case 2:
+ check_numeric(vh, "hour");
+ num2int_with_frac(h, 2);
+ case 1:
+ check_numeric(vjd, "jd");
+ num2num_with_frac(jd, 1);
+ }
+
+ {
+ VALUE nth;
+ int rh, rmin, rs, rjd, rjd2;
+
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+ canon24oc();
+
+ decode_jd(jd, &nth, &rjd);
+ rjd2 = jd_local_to_utc(rjd,
+ time_to_df(rh, rmin, rs),
+ rof);
+
+ ret = d_complex_new_internal(klass,
+ nth, rjd2,
+ 0, INT2FIX(0),
+ rof, sg,
+ 0, 0, 0,
+ rh, rmin, rs,
+ HAVE_JD | HAVE_TIME);
+ }
+ add_frac();
+ return ret;
+}
+
+/*
+ * call-seq:
+ * DateTime.ordinal([year=-4712[, yday=1[, hour=0[, minute=0[, second=0[, offset=0[, start=Date::ITALY]]]]]]]) -> datetime
+ *
+ * Creates a DateTime object denoting the given ordinal date.
+ *
+ * DateTime.ordinal(2001,34) #=> #<DateTime: 2001-02-03T00:00:00+00:00 ...>
+ * DateTime.ordinal(2001,34,4,5,6,'+7')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.ordinal(2001,-332,-20,-55,-54,'+7')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ */
+static VALUE
+datetime_s_ordinal(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vd, vh, vmin, vs, vof, vsg, y, fr, fr2, ret;
+ int d, h, min, s, rof;
+ double sg;
+
+ rb_scan_args(argc, argv, "07", &vy, &vd, &vh, &vmin, &vs, &vof, &vsg);
+
+ y = INT2FIX(-4712);
+ d = 1;
+
+ h = min = s = 0;
+ fr2 = INT2FIX(0);
+ rof = 0;
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 7:
+ val2sg(vsg, sg);
+ case 6:
+ val2off(vof, rof);
+ case 5:
+ check_numeric(vs, "second");
+ num2int_with_frac(s, positive_inf);
+ case 4:
+ check_numeric(vmin, "minute");
+ num2int_with_frac(min, 4);
+ case 3:
+ check_numeric(vh, "hour");
+ num2int_with_frac(h, 3);
+ case 2:
+ check_numeric(vd, "yday");
+ num2int_with_frac(d, 2);
+ case 1:
+ check_numeric(vy, "year");
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rd, rh, rmin, rs, rjd, rjd2, ns;
+
+ if (!valid_ordinal_p(y, d, sg,
+ &nth, &ry,
+ &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+ canon24oc();
+
+ rjd2 = jd_local_to_utc(rjd,
+ time_to_df(rh, rmin, rs),
+ rof);
+
+ ret = d_complex_new_internal(klass,
+ nth, rjd2,
+ 0, INT2FIX(0),
+ rof, sg,
+ 0, 0, 0,
+ rh, rmin, rs,
+ HAVE_JD | HAVE_TIME);
+ }
+ add_frac();
+ return ret;
+}
+
+/*
+ * Same as DateTime.new.
+ */
+static VALUE
+datetime_s_civil(int argc, VALUE *argv, VALUE klass)
+{
+ return datetime_initialize(argc, argv, d_lite_s_alloc_complex(klass));
+}
+
+static VALUE
+datetime_initialize(int argc, VALUE *argv, VALUE self)
+{
+ VALUE vy, vm, vd, vh, vmin, vs, vof, vsg, y, fr, fr2, ret;
+ int m, d, h, min, s, rof;
+ double sg;
+ struct ComplexDateData *dat = rb_check_typeddata(self, &d_lite_type);
+
+ if (!complex_dat_p(dat)) {
+ rb_raise(rb_eTypeError, "DateTime expected");
+ }
+
+ rb_scan_args(argc, argv, "08", &vy, &vm, &vd, &vh, &vmin, &vs, &vof, &vsg);
+
+ y = INT2FIX(-4712);
+ m = 1;
+ d = 1;
+
+ h = min = s = 0;
+ fr2 = INT2FIX(0);
+ rof = 0;
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 8:
+ val2sg(vsg, sg);
+ case 7:
+ val2off(vof, rof);
+ case 6:
+ check_numeric(vs, "second");
+ num2int_with_frac(s, positive_inf);
+ case 5:
+ check_numeric(vmin, "minute");
+ num2int_with_frac(min, 5);
+ case 4:
+ check_numeric(vh, "hour");
+ num2int_with_frac(h, 4);
+ case 3:
+ check_numeric(vd, "day");
+ num2int_with_frac(d, 3);
+ case 2:
+ check_numeric(vm, "month");
+ m = NUM2INT(vm);
+ case 1:
+ check_numeric(vy, "year");
+ y = vy;
+ }
+
+ if (guess_style(y, sg) < 0) {
+ VALUE nth;
+ int ry, rm, rd, rh, rmin, rs;
+
+ if (!valid_gregorian_p(y, m, d,
+ &nth, &ry,
+ &rm, &rd))
+ rb_raise(eDateError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+ canon24oc();
+
+ set_to_complex(self, dat,
+ nth, 0,
+ 0, INT2FIX(0),
+ rof, sg,
+ ry, rm, rd,
+ rh, rmin, rs,
+ HAVE_CIVIL | HAVE_TIME);
+ }
+ else {
+ VALUE nth;
+ int ry, rm, rd, rh, rmin, rs, rjd, rjd2, ns;
+
+ if (!valid_civil_p(y, m, d, sg,
+ &nth, &ry,
+ &rm, &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+ canon24oc();
+
+ rjd2 = jd_local_to_utc(rjd,
+ time_to_df(rh, rmin, rs),
+ rof);
+
+ set_to_complex(self, dat,
+ nth, rjd2,
+ 0, INT2FIX(0),
+ rof, sg,
+ ry, rm, rd,
+ rh, rmin, rs,
+ HAVE_JD | HAVE_CIVIL | HAVE_TIME);
+ }
+ ret = self;
+ add_frac();
+ return ret;
+}
+
+/*
+ * call-seq:
+ * DateTime.commercial([cwyear=-4712[, cweek=1[, cwday=1[, hour=0[, minute=0[, second=0[, offset=0[, start=Date::ITALY]]]]]]]]) -> datetime
+ *
+ * Creates a DateTime object denoting the given week date.
+ *
+ * DateTime.commercial(2001) #=> #<DateTime: 2001-01-01T00:00:00+00:00 ...>
+ * DateTime.commercial(2002) #=> #<DateTime: 2001-12-31T00:00:00+00:00 ...>
+ * DateTime.commercial(2001,5,6,4,5,6,'+7')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ */
+static VALUE
+datetime_s_commercial(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vh, vmin, vs, vof, vsg, y, fr, fr2, ret;
+ int w, d, h, min, s, rof;
+ double sg;
+
+ rb_scan_args(argc, argv, "08", &vy, &vw, &vd, &vh, &vmin, &vs, &vof, &vsg);
+
+ y = INT2FIX(-4712);
+ w = 1;
+ d = 1;
+
+ h = min = s = 0;
+ fr2 = INT2FIX(0);
+ rof = 0;
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 8:
+ val2sg(vsg, sg);
+ case 7:
+ val2off(vof, rof);
+ case 6:
+ check_numeric(vs, "second");
+ num2int_with_frac(s, positive_inf);
+ case 5:
+ check_numeric(vmin, "minute");
+ num2int_with_frac(min, 5);
+ case 4:
+ check_numeric(vh, "hour");
+ num2int_with_frac(h, 4);
+ case 3:
+ check_numeric(vd, "cwday");
+ num2int_with_frac(d, 3);
+ case 2:
+ check_numeric(vw, "cweek");
+ w = NUM2INT(vw);
+ case 1:
+ check_numeric(vy, "year");
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rw, rd, rh, rmin, rs, rjd, rjd2, ns;
+
+ if (!valid_commercial_p(y, w, d, sg,
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+ canon24oc();
+
+ rjd2 = jd_local_to_utc(rjd,
+ time_to_df(rh, rmin, rs),
+ rof);
+
+ ret = d_complex_new_internal(klass,
+ nth, rjd2,
+ 0, INT2FIX(0),
+ rof, sg,
+ 0, 0, 0,
+ rh, rmin, rs,
+ HAVE_JD | HAVE_TIME);
+ }
+ add_frac();
+ return ret;
+}
+
+#ifndef NDEBUG
+/* :nodoc: */
+static VALUE
+datetime_s_weeknum(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vw, vd, vf, vh, vmin, vs, vof, vsg, y, fr, fr2, ret;
+ int w, d, f, h, min, s, rof;
+ double sg;
+
+ rb_scan_args(argc, argv, "09", &vy, &vw, &vd, &vf,
+ &vh, &vmin, &vs, &vof, &vsg);
+
+ y = INT2FIX(-4712);
+ w = 0;
+ d = 1;
+ f = 0;
+
+ h = min = s = 0;
+ fr2 = INT2FIX(0);
+ rof = 0;
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 9:
+ val2sg(vsg, sg);
+ case 8:
+ val2off(vof, rof);
+ case 7:
+ num2int_with_frac(s, positive_inf);
+ case 6:
+ num2int_with_frac(min, 6);
+ case 5:
+ num2int_with_frac(h, 5);
+ case 4:
+ f = NUM2INT(vf);
+ case 3:
+ num2int_with_frac(d, 4);
+ case 2:
+ w = NUM2INT(vw);
+ case 1:
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rw, rd, rh, rmin, rs, rjd, rjd2, ns;
+
+ if (!valid_weeknum_p(y, w, d, f, sg,
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+ canon24oc();
+
+ rjd2 = jd_local_to_utc(rjd,
+ time_to_df(rh, rmin, rs),
+ rof);
+ ret = d_complex_new_internal(klass,
+ nth, rjd2,
+ 0, INT2FIX(0),
+ rof, sg,
+ 0, 0, 0,
+ rh, rmin, rs,
+ HAVE_JD | HAVE_TIME);
+ }
+ add_frac();
+ return ret;
+}
+
+/* :nodoc: */
+static VALUE
+datetime_s_nth_kday(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vn, vk, vh, vmin, vs, vof, vsg, y, fr, fr2, ret;
+ int m, n, k, h, min, s, rof;
+ double sg;
+
+ rb_scan_args(argc, argv, "09", &vy, &vm, &vn, &vk,
+ &vh, &vmin, &vs, &vof, &vsg);
+
+ y = INT2FIX(-4712);
+ m = 1;
+ n = 1;
+ k = 1;
+
+ h = min = s = 0;
+ fr2 = INT2FIX(0);
+ rof = 0;
+ sg = DEFAULT_SG;
+
+ switch (argc) {
+ case 9:
+ val2sg(vsg, sg);
+ case 8:
+ val2off(vof, rof);
+ case 7:
+ num2int_with_frac(s, positive_inf);
+ case 6:
+ num2int_with_frac(min, 6);
+ case 5:
+ num2int_with_frac(h, 5);
+ case 4:
+ num2int_with_frac(k, 4);
+ case 3:
+ n = NUM2INT(vn);
+ case 2:
+ m = NUM2INT(vm);
+ case 1:
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rm, rn, rk, rh, rmin, rs, rjd, rjd2, ns;
+
+ if (!valid_nth_kday_p(y, m, n, k, sg,
+ &nth, &ry,
+ &rm, &rn, &rk, &rjd,
+ &ns))
+ rb_raise(eDateError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+ canon24oc();
+
+ rjd2 = jd_local_to_utc(rjd,
+ time_to_df(rh, rmin, rs),
+ rof);
+ ret = d_complex_new_internal(klass,
+ nth, rjd2,
+ 0, INT2FIX(0),
+ rof, sg,
+ 0, 0, 0,
+ rh, rmin, rs,
+ HAVE_JD | HAVE_TIME);
+ }
+ add_frac();
+ return ret;
+}
+#endif
+
+/*
+ * call-seq:
+ * DateTime.now([start=Date::ITALY]) -> datetime
+ *
+ * Creates a DateTime object denoting the present time.
+ *
+ * DateTime.now #=> #<DateTime: 2011-06-11T21:20:44+09:00 ...>
+ */
+static VALUE
+datetime_s_now(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vsg, nth, ret;
+ double sg;
+#ifdef HAVE_CLOCK_GETTIME
+ struct timespec ts;
+#else
+ struct timeval tv;
+#endif
+ time_t sec;
+ struct tm tm;
+ long sf, of;
+ int y, ry, m, d, h, min, s;
+
+ rb_scan_args(argc, argv, "01", &vsg);
+
+ if (argc < 1)
+ sg = DEFAULT_SG;
+ else
+ sg = NUM2DBL(vsg);
+
+#ifdef HAVE_CLOCK_GETTIME
+ if (clock_gettime(CLOCK_REALTIME, &ts) == -1)
+ rb_sys_fail("clock_gettime");
+ sec = ts.tv_sec;
+#else
+ if (gettimeofday(&tv, NULL) == -1)
+ rb_sys_fail("gettimeofday");
+ sec = tv.tv_sec;
+#endif
+ tzset();
+ if (!localtime_r(&sec, &tm))
+ rb_sys_fail("localtime");
+
+ y = tm.tm_year + 1900;
+ m = tm.tm_mon + 1;
+ d = tm.tm_mday;
+ h = tm.tm_hour;
+ min = tm.tm_min;
+ s = tm.tm_sec;
+ if (s == 60)
+ s = 59;
+#ifdef HAVE_STRUCT_TM_TM_GMTOFF
+ of = tm.tm_gmtoff;
+#elif defined(HAVE_TIMEZONE)
+#if defined(HAVE_ALTZONE) && !defined(_AIX)
+ of = (long)-((tm.tm_isdst > 0) ? altzone : timezone);
+#else
+ of = (long)-timezone;
+ if (tm.tm_isdst) {
+ time_t sec2;
+
+ tm.tm_isdst = 0;
+ sec2 = mktime(&tm);
+ of += (long)difftime(sec2, sec);
+ }
+#endif
+#elif defined(HAVE_TIMEGM)
+ {
+ time_t sec2;
+
+ sec2 = timegm(&tm);
+ of = (long)difftime(sec2, sec);
+ }
+#else
+ {
+ struct tm tm2;
+ time_t sec2;
+
+ if (!gmtime_r(&sec, &tm2))
+ rb_sys_fail("gmtime");
+ tm2.tm_isdst = tm.tm_isdst;
+ sec2 = mktime(&tm2);
+ of = (long)difftime(sec, sec2);
+ }
+#endif
+#ifdef HAVE_CLOCK_GETTIME
+ sf = ts.tv_nsec;
+#else
+ sf = tv.tv_usec * 1000;
+#endif
+
+ if (of < -DAY_IN_SECONDS || of > DAY_IN_SECONDS) {
+ of = 0;
+ rb_warning("invalid offset is ignored");
+ }
+
+ decode_year(INT2FIX(y), -1, &nth, &ry);
+
+ ret = d_complex_new_internal(klass,
+ nth, 0,
+ 0, LONG2NUM(sf),
+ (int)of, GREGORIAN,
+ ry, m, d,
+ h, min, s,
+ HAVE_CIVIL | HAVE_TIME);
+ {
+ get_d1(ret);
+ set_sg(dat, sg);
+ }
+ return ret;
+}
+
+static VALUE
+dt_new_by_frags(VALUE klass, VALUE hash, VALUE sg)
+{
+ VALUE jd, sf, t;
+ int df, of;
+
+ if (!c_valid_start_p(NUM2DBL(sg))) {
+ sg = INT2FIX(DEFAULT_SG);
+ rb_warning("invalid start is ignored");
+ }
+
+ if (NIL_P(hash))
+ rb_raise(eDateError, "invalid date");
+
+ if (NIL_P(ref_hash("jd")) &&
+ NIL_P(ref_hash("yday")) &&
+ !NIL_P(ref_hash("year")) &&
+ !NIL_P(ref_hash("mon")) &&
+ !NIL_P(ref_hash("mday"))) {
+ jd = rt__valid_civil_p(ref_hash("year"),
+ ref_hash("mon"),
+ ref_hash("mday"), sg);
+
+ if (NIL_P(ref_hash("hour")))
+ set_hash("hour", INT2FIX(0));
+ if (NIL_P(ref_hash("min")))
+ set_hash("min", INT2FIX(0));
+ if (NIL_P(ref_hash("sec")))
+ set_hash("sec", INT2FIX(0));
+ else if (f_eqeq_p(ref_hash("sec"), INT2FIX(60)))
+ set_hash("sec", INT2FIX(59));
+ }
+ else {
+ hash = rt_rewrite_frags(hash);
+ hash = rt_complete_frags(klass, hash);
+ jd = rt__valid_date_frags_p(hash, sg);
+ }
+
+ if (NIL_P(jd))
+ rb_raise(eDateError, "invalid date");
+
+ {
+ int rh, rmin, rs;
+
+ if (!c_valid_time_p(NUM2INT(ref_hash("hour")),
+ NUM2INT(ref_hash("min")),
+ NUM2INT(ref_hash("sec")),
+ &rh, &rmin, &rs))
+ rb_raise(eDateError, "invalid date");
+
+ df = time_to_df(rh, rmin, rs);
+ }
+
+ t = ref_hash("sec_fraction");
+ if (NIL_P(t))
+ sf = INT2FIX(0);
+ else
+ sf = sec_to_ns(t);
+
+ t = ref_hash("offset");
+ if (NIL_P(t))
+ of = 0;
+ else {
+ of = NUM2INT(t);
+ if (of < -DAY_IN_SECONDS || of > DAY_IN_SECONDS) {
+ of = 0;
+ rb_warning("invalid offset is ignored");
+ }
+ }
+ {
+ VALUE nth;
+ int rjd, rjd2;
+
+ decode_jd(jd, &nth, &rjd);
+ rjd2 = jd_local_to_utc(rjd, df, of);
+ df = df_local_to_utc(df, of);
+
+ return d_complex_new_internal(klass,
+ nth, rjd2,
+ df, sf,
+ of, NUM2DBL(sg),
+ 0, 0, 0,
+ 0, 0, 0,
+ HAVE_JD | HAVE_DF);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime._strptime(string[, format='%FT%T%z']) -> hash
+ *
+ * Parses the given representation of date and time with the given
+ * template, and returns a hash of parsed elements. _strptime does
+ * not support specification of flags and width unlike strftime.
+ *
+ * See also strptime(3) and #strftime.
+ */
+static VALUE
+datetime_s__strptime(int argc, VALUE *argv, VALUE klass)
+{
+ return date_s__strptime_internal(argc, argv, klass, "%FT%T%z");
+}
+
+/*
+ * call-seq:
+ * DateTime.strptime([string='-4712-01-01T00:00:00+00:00'[, format='%FT%T%z'[ ,start=Date::ITALY]]]) -> datetime
+ *
+ * Parses the given representation of date and time with the given
+ * template, and creates a DateTime object. strptime does not support
+ * specification of flags and width unlike strftime.
+ *
+ * DateTime.strptime('2001-02-03T04:05:06+07:00', '%Y-%m-%dT%H:%M:%S%z')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.strptime('03-02-2001 04:05:06 PM', '%d-%m-%Y %I:%M:%S %p')
+ * #=> #<DateTime: 2001-02-03T16:05:06+00:00 ...>
+ * DateTime.strptime('2001-W05-6T04:05:06+07:00', '%G-W%V-%uT%H:%M:%S%z')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.strptime('2001 04 6 04 05 06 +7', '%Y %U %w %H %M %S %z')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.strptime('2001 05 6 04 05 06 +7', '%Y %W %u %H %M %S %z')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.strptime('-1', '%s')
+ * #=> #<DateTime: 1969-12-31T23:59:59+00:00 ...>
+ * DateTime.strptime('-1000', '%Q')
+ * #=> #<DateTime: 1969-12-31T23:59:59+00:00 ...>
+ * DateTime.strptime('sat3feb014pm+7', '%a%d%b%y%H%p%z')
+ * #=> #<DateTime: 2001-02-03T16:00:00+07:00 ...>
+ *
+ * See also strptime(3) and #strftime.
+ */
+static VALUE
+datetime_s_strptime(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, fmt, sg;
+
+ rb_scan_args(argc, argv, "03", &str, &fmt, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME);
+ case 1:
+ fmt = rb_str_new2("%FT%T%z");
+ case 2:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE argv2[2], hash;
+
+ argv2[0] = str;
+ argv2[1] = fmt;
+ hash = date_s__strptime(2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.parse(string='-4712-01-01T00:00:00+00:00'[, comp=true[, start=Date::ITALY]], limit: 128) -> datetime
+ *
+ * Parses the given representation of date and time, and creates a
+ * DateTime object.
+ *
+ * This method *does* *not* function as a validator. If the input
+ * string does not match valid formats strictly, you may get a cryptic
+ * result. Should consider to use DateTime.strptime instead of this
+ * method as possible.
+ *
+ * If the optional second argument is true and the detected year is in
+ * the range "00" to "99", makes it full.
+ *
+ * DateTime.parse('2001-02-03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.parse('20010203T040506+0700')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.parse('3rd Feb 2001 04:05:06 PM')
+ * #=> #<DateTime: 2001-02-03T16:05:06+00:00 ...>
+ *
+ * Raise an ArgumentError when the string length is longer than _limit_.
+ * You can stop this check by passing <code>limit: nil</code>, but note
+ * that it may take a long time to parse.
+ */
+static VALUE
+datetime_s_parse(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, comp, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "03:", &str, &comp, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME);
+ case 1:
+ comp = Qtrue;
+ case 2:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 2;
+ VALUE argv2[3], hash;
+ argv2[0] = str;
+ argv2[1] = comp;
+ argv2[2] = opt;
+ if (!NIL_P(opt)) argc2++;
+ hash = date_s__parse(argc2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.iso8601(string='-4712-01-01T00:00:00+00:00'[, start=Date::ITALY], limit: 128) -> datetime
+ *
+ * Creates a new DateTime object by parsing from a string according to
+ * some typical ISO 8601 formats.
+ *
+ * DateTime.iso8601('2001-02-03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.iso8601('20010203T040506+0700')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.iso8601('2001-W05-6T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ *
+ * Raise an ArgumentError when the string length is longer than _limit_.
+ * You can stop this check by passing <code>limit: nil</code>, but note
+ * that it may take a long time to parse.
+ */
+static VALUE
+datetime_s_iso8601(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ argv2[1] = opt;
+ if (!NIL_P(opt)) argc2++;
+ hash = date_s__iso8601(argc2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.rfc3339(string='-4712-01-01T00:00:00+00:00'[, start=Date::ITALY], limit: 128) -> datetime
+ *
+ * Creates a new DateTime object by parsing from a string according to
+ * some typical RFC 3339 formats.
+ *
+ * DateTime.rfc3339('2001-02-03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ *
+ * Raise an ArgumentError when the string length is longer than _limit_.
+ * You can stop this check by passing <code>limit: nil</code>, but note
+ * that it may take a long time to parse.
+ */
+static VALUE
+datetime_s_rfc3339(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ argv2[1] = opt;
+ if (!NIL_P(opt)) argc2++;
+ hash = date_s__rfc3339(argc2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.xmlschema(string='-4712-01-01T00:00:00+00:00'[, start=Date::ITALY], limit: 128) -> datetime
+ *
+ * Creates a new DateTime object by parsing from a string according to
+ * some typical XML Schema formats.
+ *
+ * DateTime.xmlschema('2001-02-03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ *
+ * Raise an ArgumentError when the string length is longer than _limit_.
+ * You can stop this check by passing <code>limit: nil</code>, but note
+ * that it may take a long time to parse.
+ */
+static VALUE
+datetime_s_xmlschema(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ argv2[1] = opt;
+ if (!NIL_P(opt)) argc2++;
+ hash = date_s__xmlschema(argc2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.rfc2822(string='Mon, 1 Jan -4712 00:00:00 +0000'[, start=Date::ITALY], limit: 128) -> datetime
+ * DateTime.rfc822(string='Mon, 1 Jan -4712 00:00:00 +0000'[, start=Date::ITALY], limit: 128) -> datetime
+ *
+ * Creates a new DateTime object by parsing from a string according to
+ * some typical RFC 2822 formats.
+ *
+ * DateTime.rfc2822('Sat, 3 Feb 2001 04:05:06 +0700')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ *
+ * Raise an ArgumentError when the string length is longer than _limit_.
+ * You can stop this check by passing <code>limit: nil</code>, but note
+ * that it may take a long time to parse.
+ */
+static VALUE
+datetime_s_rfc2822(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME_RFC3339);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ argv2[1] = opt;
+ if (!NIL_P(opt)) argc2++;
+ hash = date_s__rfc2822(argc2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.httpdate(string='Mon, 01 Jan -4712 00:00:00 GMT'[, start=Date::ITALY]) -> datetime
+ *
+ * Creates a new DateTime object by parsing from a string according to
+ * some RFC 2616 format.
+ *
+ * DateTime.httpdate('Sat, 03 Feb 2001 04:05:06 GMT')
+ * #=> #<DateTime: 2001-02-03T04:05:06+00:00 ...>
+ *
+ * Raise an ArgumentError when the string length is longer than _limit_.
+ * You can stop this check by passing <code>limit: nil</code>, but note
+ * that it may take a long time to parse.
+ */
+static VALUE
+datetime_s_httpdate(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME_HTTPDATE);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ argv2[1] = opt;
+ if (!NIL_P(opt)) argc2++;
+ hash = date_s__httpdate(argc2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.jisx0301(string='-4712-01-01T00:00:00+00:00'[, start=Date::ITALY], limit: 128) -> datetime
+ *
+ * Creates a new DateTime object by parsing from a string according to
+ * some typical JIS X 0301 formats.
+ *
+ * DateTime.jisx0301('H13.02.03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ *
+ * For no-era year, legacy format, Heisei is assumed.
+ *
+ * DateTime.jisx0301('13.02.03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ *
+ * Raise an ArgumentError when the string length is longer than _limit_.
+ * You can stop this check by passing <code>limit: nil</code>, but note
+ * that it may take a long time to parse.
+ */
+static VALUE
+datetime_s_jisx0301(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg, opt;
+
+ argc = rb_scan_args(argc, argv, "02:", &str, &sg, &opt);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2(JULIAN_EPOCH_DATETIME);
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ int argc2 = 1;
+ VALUE argv2[2], hash;
+ argv2[0] = str;
+ argv2[1] = opt;
+ if (!NIL_P(opt)) argc2++;
+ hash = date_s__jisx0301(argc2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * dt.to_s -> string
+ *
+ * Returns a string in an ISO 8601 format. (This method doesn't use the
+ * expanded representations.)
+ *
+ * DateTime.new(2001,2,3,4,5,6,'-7').to_s
+ * #=> "2001-02-03T04:05:06-07:00"
+ */
+static VALUE
+dt_lite_to_s(VALUE self)
+{
+ return strftimev("%Y-%m-%dT%H:%M:%S%:z", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * strftime(format = '%FT%T%:z') -> string
+ *
+ * Returns a string representation of +self+,
+ * formatted according the given +format:
+ *
+ * DateTime.now.strftime # => "2022-07-01T11:03:19-05:00"
+ *
+ * For other formats,
+ * see {Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc]:
+ *
+ */
+static VALUE
+dt_lite_strftime(int argc, VALUE *argv, VALUE self)
+{
+ return date_strftime_internal(argc, argv, self,
+ "%Y-%m-%dT%H:%M:%S%:z", set_tmx);
+}
+
+static VALUE
+iso8601_timediv(VALUE self, long n)
+{
+ static const char timefmt[] = "T%H:%M:%S";
+ static const char zone[] = "%:z";
+ char fmt[sizeof(timefmt) + sizeof(zone) + rb_strlen_lit(".%N") +
+ DECIMAL_SIZE_OF_LONG];
+ char *p = fmt;
+
+ memcpy(p, timefmt, sizeof(timefmt)-1);
+ p += sizeof(timefmt)-1;
+ if (n > 0) p += snprintf(p, fmt+sizeof(fmt)-p, ".%%%ldN", n);
+ memcpy(p, zone, sizeof(zone));
+ return strftimev(fmt, self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * dt.iso8601([n=0]) -> string
+ * dt.xmlschema([n=0]) -> string
+ *
+ * This method is equivalent to strftime('%FT%T%:z').
+ * The optional argument +n+ is the number of digits for fractional seconds.
+ *
+ * DateTime.parse('2001-02-03T04:05:06.123456789+07:00').iso8601(9)
+ * #=> "2001-02-03T04:05:06.123456789+07:00"
+ */
+static VALUE
+dt_lite_iso8601(int argc, VALUE *argv, VALUE self)
+{
+ long n = 0;
+
+ rb_check_arity(argc, 0, 1);
+ if (argc >= 1)
+ n = NUM2LONG(argv[0]);
+
+ return rb_str_append(strftimev("%Y-%m-%d", self, set_tmx),
+ iso8601_timediv(self, n));
+}
+
+/*
+ * call-seq:
+ * dt.rfc3339([n=0]) -> string
+ *
+ * This method is equivalent to strftime('%FT%T%:z').
+ * The optional argument +n+ is the number of digits for fractional seconds.
+ *
+ * DateTime.parse('2001-02-03T04:05:06.123456789+07:00').rfc3339(9)
+ * #=> "2001-02-03T04:05:06.123456789+07:00"
+ */
+static VALUE
+dt_lite_rfc3339(int argc, VALUE *argv, VALUE self)
+{
+ return dt_lite_iso8601(argc, argv, self);
+}
+
+/*
+ * call-seq:
+ * dt.jisx0301([n=0]) -> string
+ *
+ * Returns a string in a JIS X 0301 format.
+ * The optional argument +n+ is the number of digits for fractional seconds.
+ *
+ * DateTime.parse('2001-02-03T04:05:06.123456789+07:00').jisx0301(9)
+ * #=> "H13.02.03T04:05:06.123456789+07:00"
+ */
+static VALUE
+dt_lite_jisx0301(int argc, VALUE *argv, VALUE self)
+{
+ long n = 0;
+
+ rb_check_arity(argc, 0, 1);
+ if (argc >= 1)
+ n = NUM2LONG(argv[0]);
+
+ return rb_str_append(d_lite_jisx0301(self),
+ iso8601_timediv(self, n));
+}
+
+/*
+ * call-seq:
+ * deconstruct_keys(array_of_names_or_nil) -> hash
+ *
+ * Returns a hash of the name/value pairs, to use in pattern matching.
+ * Possible keys are: <tt>:year</tt>, <tt>:month</tt>, <tt>:day</tt>,
+ * <tt>:wday</tt>, <tt>:yday</tt>, <tt>:hour</tt>, <tt>:min</tt>,
+ * <tt>:sec</tt>, <tt>:sec_fraction</tt>, <tt>:zone</tt>.
+ *
+ * Possible usages:
+ *
+ * dt = DateTime.new(2022, 10, 5, 13, 30)
+ *
+ * if d in wday: 1..5, hour: 10..18 # uses deconstruct_keys underneath
+ * puts "Working time"
+ * end
+ * #=> prints "Working time"
+ *
+ * case dt
+ * in year: ...2022
+ * puts "too old"
+ * in month: ..9
+ * puts "quarter 1-3"
+ * in wday: 1..5, month:
+ * puts "working day in month #{month}"
+ * end
+ * #=> prints "working day in month 10"
+ *
+ * Note that deconstruction by pattern can also be combined with class check:
+ *
+ * if d in DateTime(wday: 1..5, hour: 10..18, day: ..7)
+ * puts "Working time, first week of the month"
+ * end
+ *
+ */
+static VALUE
+dt_lite_deconstruct_keys(VALUE self, VALUE keys)
+{
+ return deconstruct_keys(self, keys, /* is_datetime=true */ 1);
+}
+
+/* conversions */
+
+#define f_subsec(x) rb_funcall(x, rb_intern("subsec"), 0)
+#define f_utc_offset(x) rb_funcall(x, rb_intern("utc_offset"), 0)
+#define f_local3(x,y,m,d) rb_funcall(x, rb_intern("local"), 3, y, m, d)
+
+/*
+ * call-seq:
+ * t.to_time -> time
+ *
+ * Returns self.
+ */
+static VALUE
+time_to_time(VALUE self)
+{
+ return self;
+}
+
+/*
+ * call-seq:
+ * t.to_date -> date
+ *
+ * Returns a Date object which denotes self.
+ */
+static VALUE
+time_to_date(VALUE self)
+{
+ VALUE y, nth, ret;
+ int ry, m, d;
+
+ y = f_year(self);
+ m = FIX2INT(f_mon(self));
+ d = FIX2INT(f_mday(self));
+
+ decode_year(y, -1, &nth, &ry);
+
+ ret = d_simple_new_internal(cDate,
+ nth, 0,
+ GREGORIAN,
+ ry, m, d,
+ HAVE_CIVIL);
+ {
+ get_d1(ret);
+ set_sg(dat, DEFAULT_SG);
+ }
+ return ret;
+}
+
+/*
+ * call-seq:
+ * t.to_datetime -> datetime
+ *
+ * Returns a DateTime object which denotes self.
+ */
+static VALUE
+time_to_datetime(VALUE self)
+{
+ VALUE y, sf, nth, ret;
+ int ry, m, d, h, min, s, of;
+
+ y = f_year(self);
+ m = FIX2INT(f_mon(self));
+ d = FIX2INT(f_mday(self));
+
+ h = FIX2INT(f_hour(self));
+ min = FIX2INT(f_min(self));
+ s = FIX2INT(f_sec(self));
+ if (s == 60)
+ s = 59;
+
+ sf = sec_to_ns(f_subsec(self));
+ of = FIX2INT(f_utc_offset(self));
+
+ decode_year(y, -1, &nth, &ry);
+
+ ret = d_complex_new_internal(cDateTime,
+ nth, 0,
+ 0, sf,
+ of, GREGORIAN,
+ ry, m, d,
+ h, min, s,
+ HAVE_CIVIL | HAVE_TIME);
+ {
+ get_d1(ret);
+ set_sg(dat, DEFAULT_SG);
+ }
+ return ret;
+}
+
+/*
+ * call-seq:
+ * to_time -> time
+ *
+ * Returns a new Time object with the same value as +self+;
+ * if +self+ is a Julian date, derives its Gregorian date
+ * for conversion to the \Time object:
+ *
+ * Date.new(2001, 2, 3).to_time # => 2001-02-03 00:00:00 -0600
+ * Date.new(2001, 2, 3, Date::JULIAN).to_time # => 2001-02-16 00:00:00 -0600
+ *
+ */
+static VALUE
+date_to_time(VALUE self)
+{
+ VALUE t;
+
+ get_d1a(self);
+
+ if (m_julian_p(adat)) {
+ VALUE g = d_lite_gregorian(self);
+ get_d1b(g);
+ adat = bdat;
+ self = g;
+ }
+
+ t = f_local3(rb_cTime,
+ m_real_year(adat),
+ INT2FIX(m_mon(adat)),
+ INT2FIX(m_mday(adat)));
+ RB_GC_GUARD(self); /* may be the converted gregorian */
+ return t;
+}
+
+/*
+ * call-seq:
+ * to_date -> self
+ *
+ * Returns +self+.
+ */
+static VALUE
+date_to_date(VALUE self)
+{
+ return self;
+}
+
+/*
+ * call-seq:
+ * d.to_datetime -> datetime
+ *
+ * Returns a DateTime whose value is the same as +self+:
+ *
+ * Date.new(2001, 2, 3).to_datetime # => #<DateTime: 2001-02-03T00:00:00+00:00>
+ *
+ */
+static VALUE
+date_to_datetime(VALUE self)
+{
+ get_d1a(self);
+
+ if (simple_dat_p(adat)) {
+ VALUE new = d_lite_s_alloc_simple(cDateTime);
+ {
+ get_d1b(new);
+ bdat->s = adat->s;
+ return new;
+ }
+ }
+ else {
+ VALUE new = d_lite_s_alloc_complex(cDateTime);
+ {
+ get_d1b(new);
+ bdat->c = adat->c;
+ bdat->c.df = 0;
+ RB_OBJ_WRITE(new, &bdat->c.sf, INT2FIX(0));
+#ifndef USE_PACK
+ bdat->c.hour = 0;
+ bdat->c.min = 0;
+ bdat->c.sec = 0;
+#else
+ bdat->c.pc = PACK5(EX_MON(adat->c.pc), EX_MDAY(adat->c.pc),
+ 0, 0, 0);
+ bdat->c.flags |= HAVE_DF | HAVE_TIME;
+#endif
+ return new;
+ }
+ }
+}
+
+/*
+ * call-seq:
+ * dt.to_time -> time
+ *
+ * Returns a Time object which denotes self.
+ */
+static VALUE
+datetime_to_time(VALUE self)
+{
+ get_d1(self);
+
+ if (m_julian_p(dat)) {
+ VALUE g = d_lite_gregorian(self);
+ get_d1a(g);
+ dat = adat;
+ self = g;
+ }
+
+ {
+ VALUE t;
+
+ t = rb_funcall(rb_cTime,
+ rb_intern("new"),
+ 7,
+ m_real_year(dat),
+ INT2FIX(m_mon(dat)),
+ INT2FIX(m_mday(dat)),
+ INT2FIX(m_hour(dat)),
+ INT2FIX(m_min(dat)),
+ f_add(INT2FIX(m_sec(dat)),
+ m_sf_in_sec(dat)),
+ INT2FIX(m_of(dat)));
+ RB_GC_GUARD(self); /* may be the converted gregorian */
+ return t;
+ }
+}
+
+/*
+ * call-seq:
+ * dt.to_date -> date
+ *
+ * Returns a Date object which denotes self.
+ */
+static VALUE
+datetime_to_date(VALUE self)
+{
+ get_d1a(self);
+
+ if (simple_dat_p(adat)) {
+ VALUE new = d_lite_s_alloc_simple(cDate);
+ {
+ get_d1b(new);
+ bdat->s = adat->s;
+ bdat->s.jd = m_local_jd(adat);
+ return new;
+ }
+ }
+ else {
+ VALUE new = d_lite_s_alloc_simple(cDate);
+ {
+ get_d1b(new);
+ copy_complex_to_simple(new, &bdat->s, &adat->c);
+ bdat->s.jd = m_local_jd(adat);
+ bdat->s.flags &= ~(HAVE_DF | HAVE_TIME | COMPLEX_DAT);
+ return new;
+ }
+ }
+}
+
+/*
+ * call-seq:
+ * dt.to_datetime -> self
+ *
+ * Returns self.
+ */
+static VALUE
+datetime_to_datetime(VALUE self)
+{
+ return self;
+}
+
+#ifndef NDEBUG
+/* tests */
+
+#define MIN_YEAR -4713
+#define MAX_YEAR 1000000
+#define MIN_JD -327
+#define MAX_JD 366963925
+
+/* :nodoc: */
+static int
+test_civil(int from, int to, double sg)
+{
+ int j;
+
+ fprintf(stderr, "test_civil: %d...%d (%d) - %.0f\n",
+ from, to, to - from, sg);
+ for (j = from; j <= to; j++) {
+ int y, m, d, rj, ns;
+
+ c_jd_to_civil(j, sg, &y, &m, &d);
+ c_civil_to_jd(y, m, d, sg, &rj, &ns);
+ if (j != rj) {
+ fprintf(stderr, "%d != %d\n", j, rj);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_test_civil(VALUE klass)
+{
+ if (!test_civil(MIN_JD, MIN_JD + 366, GREGORIAN))
+ return Qfalse;
+ if (!test_civil(2305814, 2598007, GREGORIAN))
+ return Qfalse;
+ if (!test_civil(MAX_JD - 366, MAX_JD, GREGORIAN))
+ return Qfalse;
+
+ if (!test_civil(MIN_JD, MIN_JD + 366, ITALY))
+ return Qfalse;
+ if (!test_civil(2305814, 2598007, ITALY))
+ return Qfalse;
+ if (!test_civil(MAX_JD - 366, MAX_JD, ITALY))
+ return Qfalse;
+
+ return Qtrue;
+}
+
+/* :nodoc: */
+static int
+test_ordinal(int from, int to, double sg)
+{
+ int j;
+
+ fprintf(stderr, "test_ordinal: %d...%d (%d) - %.0f\n",
+ from, to, to - from, sg);
+ for (j = from; j <= to; j++) {
+ int y, d, rj, ns;
+
+ c_jd_to_ordinal(j, sg, &y, &d);
+ c_ordinal_to_jd(y, d, sg, &rj, &ns);
+ if (j != rj) {
+ fprintf(stderr, "%d != %d\n", j, rj);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_test_ordinal(VALUE klass)
+{
+ if (!test_ordinal(MIN_JD, MIN_JD + 366, GREGORIAN))
+ return Qfalse;
+ if (!test_ordinal(2305814, 2598007, GREGORIAN))
+ return Qfalse;
+ if (!test_ordinal(MAX_JD - 366, MAX_JD, GREGORIAN))
+ return Qfalse;
+
+ if (!test_ordinal(MIN_JD, MIN_JD + 366, ITALY))
+ return Qfalse;
+ if (!test_ordinal(2305814, 2598007, ITALY))
+ return Qfalse;
+ if (!test_ordinal(MAX_JD - 366, MAX_JD, ITALY))
+ return Qfalse;
+
+ return Qtrue;
+}
+
+/* :nodoc: */
+static int
+test_commercial(int from, int to, double sg)
+{
+ int j;
+
+ fprintf(stderr, "test_commercial: %d...%d (%d) - %.0f\n",
+ from, to, to - from, sg);
+ for (j = from; j <= to; j++) {
+ int y, w, d, rj, ns;
+
+ c_jd_to_commercial(j, sg, &y, &w, &d);
+ c_commercial_to_jd(y, w, d, sg, &rj, &ns);
+ if (j != rj) {
+ fprintf(stderr, "%d != %d\n", j, rj);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_test_commercial(VALUE klass)
+{
+ if (!test_commercial(MIN_JD, MIN_JD + 366, GREGORIAN))
+ return Qfalse;
+ if (!test_commercial(2305814, 2598007, GREGORIAN))
+ return Qfalse;
+ if (!test_commercial(MAX_JD - 366, MAX_JD, GREGORIAN))
+ return Qfalse;
+
+ if (!test_commercial(MIN_JD, MIN_JD + 366, ITALY))
+ return Qfalse;
+ if (!test_commercial(2305814, 2598007, ITALY))
+ return Qfalse;
+ if (!test_commercial(MAX_JD - 366, MAX_JD, ITALY))
+ return Qfalse;
+
+ return Qtrue;
+}
+
+/* :nodoc: */
+static int
+test_weeknum(int from, int to, int f, double sg)
+{
+ int j;
+
+ fprintf(stderr, "test_weeknum: %d...%d (%d) - %.0f\n",
+ from, to, to - from, sg);
+ for (j = from; j <= to; j++) {
+ int y, w, d, rj, ns;
+
+ c_jd_to_weeknum(j, f, sg, &y, &w, &d);
+ c_weeknum_to_jd(y, w, d, f, sg, &rj, &ns);
+ if (j != rj) {
+ fprintf(stderr, "%d != %d\n", j, rj);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_test_weeknum(VALUE klass)
+{
+ int f;
+
+ for (f = 0; f <= 1; f++) {
+ if (!test_weeknum(MIN_JD, MIN_JD + 366, f, GREGORIAN))
+ return Qfalse;
+ if (!test_weeknum(2305814, 2598007, f, GREGORIAN))
+ return Qfalse;
+ if (!test_weeknum(MAX_JD - 366, MAX_JD, f, GREGORIAN))
+ return Qfalse;
+
+ if (!test_weeknum(MIN_JD, MIN_JD + 366, f, ITALY))
+ return Qfalse;
+ if (!test_weeknum(2305814, 2598007, f, ITALY))
+ return Qfalse;
+ if (!test_weeknum(MAX_JD - 366, MAX_JD, f, ITALY))
+ return Qfalse;
+ }
+
+ return Qtrue;
+}
+
+/* :nodoc: */
+static int
+test_nth_kday(int from, int to, double sg)
+{
+ int j;
+
+ fprintf(stderr, "test_nth_kday: %d...%d (%d) - %.0f\n",
+ from, to, to - from, sg);
+ for (j = from; j <= to; j++) {
+ int y, m, n, k, rj, ns;
+
+ c_jd_to_nth_kday(j, sg, &y, &m, &n, &k);
+ c_nth_kday_to_jd(y, m, n, k, sg, &rj, &ns);
+ if (j != rj) {
+ fprintf(stderr, "%d != %d\n", j, rj);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_test_nth_kday(VALUE klass)
+{
+ if (!test_nth_kday(MIN_JD, MIN_JD + 366, GREGORIAN))
+ return Qfalse;
+ if (!test_nth_kday(2305814, 2598007, GREGORIAN))
+ return Qfalse;
+ if (!test_nth_kday(MAX_JD - 366, MAX_JD, GREGORIAN))
+ return Qfalse;
+
+ if (!test_nth_kday(MIN_JD, MIN_JD + 366, ITALY))
+ return Qfalse;
+ if (!test_nth_kday(2305814, 2598007, ITALY))
+ return Qfalse;
+ if (!test_nth_kday(MAX_JD - 366, MAX_JD, ITALY))
+ return Qfalse;
+
+ return Qtrue;
+}
+
+/* :nodoc: */
+static int
+test_unit_v2v(VALUE i,
+ VALUE (* conv1)(VALUE),
+ VALUE (* conv2)(VALUE))
+{
+ VALUE c, o;
+ c = (*conv1)(i);
+ o = (*conv2)(c);
+ return f_eqeq_p(o, i);
+}
+
+/* :nodoc: */
+static int
+test_unit_v2v_iter2(VALUE (* conv1)(VALUE),
+ VALUE (* conv2)(VALUE))
+{
+ if (!test_unit_v2v(INT2FIX(0), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(INT2FIX(1), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(INT2FIX(2), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(INT2FIX(3), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(INT2FIX(11), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(INT2FIX(65535), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(INT2FIX(1073741823), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(INT2NUM(1073741824), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(rb_rational_new2(INT2FIX(0), INT2FIX(1)), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(rb_rational_new2(INT2FIX(1), INT2FIX(1)), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(rb_rational_new2(INT2FIX(1), INT2FIX(2)), conv1, conv2))
+ return 0;
+ if (!test_unit_v2v(rb_rational_new2(INT2FIX(2), INT2FIX(3)), conv1, conv2))
+ return 0;
+ return 1;
+}
+
+/* :nodoc: */
+static int
+test_unit_v2v_iter(VALUE (* conv1)(VALUE),
+ VALUE (* conv2)(VALUE))
+{
+ if (!test_unit_v2v_iter2(conv1, conv2))
+ return 0;
+ if (!test_unit_v2v_iter2(conv2, conv1))
+ return 0;
+ return 1;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_test_unit_conv(VALUE klass)
+{
+ if (!test_unit_v2v_iter(sec_to_day, day_to_sec))
+ return Qfalse;
+ if (!test_unit_v2v_iter(ms_to_sec, sec_to_ms))
+ return Qfalse;
+ if (!test_unit_v2v_iter(ns_to_day, day_to_ns))
+ return Qfalse;
+ if (!test_unit_v2v_iter(ns_to_sec, sec_to_ns))
+ return Qfalse;
+ return Qtrue;
+}
+
+/* :nodoc: */
+static VALUE
+date_s_test_all(VALUE klass)
+{
+ if (date_s_test_civil(klass) == Qfalse)
+ return Qfalse;
+ if (date_s_test_ordinal(klass) == Qfalse)
+ return Qfalse;
+ if (date_s_test_commercial(klass) == Qfalse)
+ return Qfalse;
+ if (date_s_test_weeknum(klass) == Qfalse)
+ return Qfalse;
+ if (date_s_test_nth_kday(klass) == Qfalse)
+ return Qfalse;
+ if (date_s_test_unit_conv(klass) == Qfalse)
+ return Qfalse;
+ return Qtrue;
+}
+#endif
+
+static const char *monthnames[] = {
+ NULL,
+ "January", "February", "March",
+ "April", "May", "June",
+ "July", "August", "September",
+ "October", "November", "December"
+};
+
+static const char *abbr_monthnames[] = {
+ NULL,
+ "Jan", "Feb", "Mar", "Apr",
+ "May", "Jun", "Jul", "Aug",
+ "Sep", "Oct", "Nov", "Dec"
+};
+
+static const char *daynames[] = {
+ "Sunday", "Monday", "Tuesday", "Wednesday",
+ "Thursday", "Friday", "Saturday"
+};
+
+static const char *abbr_daynames[] = {
+ "Sun", "Mon", "Tue", "Wed",
+ "Thu", "Fri", "Sat"
+};
+
+static VALUE
+mk_ary_of_str(long len, const char *a[])
+{
+ VALUE o;
+ long i;
+
+ o = rb_ary_new2(len);
+ for (i = 0; i < len; i++) {
+ VALUE e;
+
+ if (!a[i])
+ e = Qnil;
+ else {
+ e = rb_usascii_str_new2(a[i]);
+ rb_obj_freeze(e);
+ }
+ rb_ary_push(o, e);
+ }
+ rb_ary_freeze(o);
+ return o;
+}
+
+/* :nodoc: */
+static VALUE
+d_lite_zero(VALUE x)
+{
+ return INT2FIX(0);
+}
+
+void
+Init_date_core(void)
+{
+ #ifdef HAVE_RB_EXT_RACTOR_SAFE
+ RB_EXT_RACTOR_SAFE(true);
+ #endif
+ id_cmp = rb_intern_const("<=>");
+ id_le_p = rb_intern_const("<=");
+ id_ge_p = rb_intern_const(">=");
+ id_eqeq_p = rb_intern_const("==");
+
+ sym_year = ID2SYM(rb_intern_const("year"));
+ sym_month = ID2SYM(rb_intern_const("month"));
+ sym_yday = ID2SYM(rb_intern_const("yday"));
+ sym_wday = ID2SYM(rb_intern_const("wday"));
+ sym_day = ID2SYM(rb_intern_const("day"));
+ sym_hour = ID2SYM(rb_intern_const("hour"));
+ sym_min = ID2SYM(rb_intern_const("min"));
+ sym_sec = ID2SYM(rb_intern_const("sec"));
+ sym_sec_fraction = ID2SYM(rb_intern_const("sec_fraction"));
+ sym_zone = ID2SYM(rb_intern_const("zone"));
+
+ half_days_in_day = rb_rational_new2(INT2FIX(1), INT2FIX(2));
+ rb_gc_register_mark_object(half_days_in_day);
+
+#if (LONG_MAX / DAY_IN_SECONDS) > SECOND_IN_NANOSECONDS
+ day_in_nanoseconds = LONG2NUM((long)DAY_IN_SECONDS *
+ SECOND_IN_NANOSECONDS);
+#elif defined HAVE_LONG_LONG
+ day_in_nanoseconds = LL2NUM((LONG_LONG)DAY_IN_SECONDS *
+ SECOND_IN_NANOSECONDS);
+#else
+ day_in_nanoseconds = f_mul(INT2FIX(DAY_IN_SECONDS),
+ INT2FIX(SECOND_IN_NANOSECONDS));
+#endif
+ rb_gc_register_mark_object(day_in_nanoseconds);
+
+ positive_inf = +INFINITY;
+ negative_inf = -INFINITY;
+
+ /*
+ * \Class \Date provides methods for storing and manipulating
+ * calendar dates.
+ *
+ * Consider using
+ * {class Time}[rdoc-ref:Time]
+ * instead of class \Date if:
+ *
+ * - You need both dates and times; \Date handles only dates.
+ * - You need only Gregorian dates (and not Julian dates);
+ * see {Julian and Gregorian Calendars}[rdoc-ref:language/calendars.rdoc].
+ *
+ * A \Date object, once created, is immutable, and cannot be modified.
+ *
+ * == Creating a \Date
+ *
+ * You can create a date for the current date, using Date.today:
+ *
+ * Date.today # => #<Date: 1999-12-31>
+ *
+ * You can create a specific date from various combinations of arguments:
+ *
+ * - Date.new takes integer year, month, and day-of-month:
+ *
+ * Date.new(1999, 12, 31) # => #<Date: 1999-12-31>
+ *
+ * - Date.ordinal takes integer year and day-of-year:
+ *
+ * Date.ordinal(1999, 365) # => #<Date: 1999-12-31>
+ *
+ * - Date.jd takes integer Julian day:
+ *
+ * Date.jd(2451544) # => #<Date: 1999-12-31>
+ *
+ * - Date.commercial takes integer commercial data (year, week, day-of-week):
+ *
+ * Date.commercial(1999, 52, 5) # => #<Date: 1999-12-31>
+ *
+ * - Date.parse takes a string, which it parses heuristically:
+ *
+ * Date.parse('1999-12-31') # => #<Date: 1999-12-31>
+ * Date.parse('31-12-1999') # => #<Date: 1999-12-31>
+ * Date.parse('1999-365') # => #<Date: 1999-12-31>
+ * Date.parse('1999-W52-5') # => #<Date: 1999-12-31>
+ *
+ * - Date.strptime takes a date string and a format string,
+ * then parses the date string according to the format string:
+ *
+ * Date.strptime('1999-12-31', '%Y-%m-%d') # => #<Date: 1999-12-31>
+ * Date.strptime('31-12-1999', '%d-%m-%Y') # => #<Date: 1999-12-31>
+ * Date.strptime('1999-365', '%Y-%j') # => #<Date: 1999-12-31>
+ * Date.strptime('1999-W52-5', '%G-W%V-%u') # => #<Date: 1999-12-31>
+ * Date.strptime('1999 52 5', '%Y %U %w') # => #<Date: 1999-12-31>
+ * Date.strptime('1999 52 5', '%Y %W %u') # => #<Date: 1999-12-31>
+ * Date.strptime('fri31dec99', '%a%d%b%y') # => #<Date: 1999-12-31>
+ *
+ * See also the specialized methods in
+ * {"Specialized Format Strings" in Formats for Dates and Times}[rdoc-ref:language/strftime_formatting.rdoc@Specialized+Format+Strings]
+ *
+ * == Argument +limit+
+ *
+ * Certain singleton methods in \Date that parse string arguments
+ * also take optional keyword argument +limit+,
+ * which can limit the length of the string argument.
+ *
+ * When +limit+ is:
+ *
+ * - Non-negative:
+ * raises ArgumentError if the string length is greater than _limit_.
+ * - Other numeric or +nil+: ignores +limit+.
+ * - Other non-numeric: raises TypeError.
+ *
+ */
+ cDate = rb_define_class("Date", rb_cObject);
+
+ /* Exception for invalid date/time */
+ eDateError = rb_define_class_under(cDate, "Error", rb_eArgError);
+
+ rb_include_module(cDate, rb_mComparable);
+
+ /* An array of strings of full month names in English. The first
+ * element is nil.
+ */
+ rb_define_const(cDate, "MONTHNAMES", mk_ary_of_str(13, monthnames));
+
+ /* An array of strings of abbreviated month names in English. The
+ * first element is nil.
+ */
+ rb_define_const(cDate, "ABBR_MONTHNAMES",
+ mk_ary_of_str(13, abbr_monthnames));
+
+ /* An array of strings of the full names of days of the week in English.
+ * The first is "Sunday".
+ */
+ rb_define_const(cDate, "DAYNAMES", mk_ary_of_str(7, daynames));
+
+ /* An array of strings of abbreviated day names in English. The
+ * first is "Sun".
+ */
+ rb_define_const(cDate, "ABBR_DAYNAMES", mk_ary_of_str(7, abbr_daynames));
+
+ /* The Julian day number of the day of calendar reform for Italy
+ * and some catholic countries.
+ */
+ rb_define_const(cDate, "ITALY", INT2FIX(ITALY));
+
+ /* The Julian day number of the day of calendar reform for England
+ * and her colonies.
+ */
+ rb_define_const(cDate, "ENGLAND", INT2FIX(ENGLAND));
+
+ /* The Julian day number of the day of calendar reform for the
+ * proleptic Julian calendar.
+ */
+ rb_define_const(cDate, "JULIAN", DBL2NUM(JULIAN));
+
+ /* The Julian day number of the day of calendar reform for the
+ * proleptic Gregorian calendar.
+ */
+ rb_define_const(cDate, "GREGORIAN", DBL2NUM(GREGORIAN));
+
+ rb_define_alloc_func(cDate, d_lite_s_alloc_simple);
+
+#ifndef NDEBUG
+ rb_define_private_method(CLASS_OF(cDate), "_valid_jd?",
+ date_s__valid_jd_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "_valid_ordinal?",
+ date_s__valid_ordinal_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "_valid_civil?",
+ date_s__valid_civil_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "_valid_date?",
+ date_s__valid_civil_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "_valid_commercial?",
+ date_s__valid_commercial_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "_valid_weeknum?",
+ date_s__valid_weeknum_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "_valid_nth_kday?",
+ date_s__valid_nth_kday_p, -1);
+#endif
+
+ rb_define_singleton_method(cDate, "valid_jd?", date_s_valid_jd_p, -1);
+ rb_define_singleton_method(cDate, "valid_ordinal?",
+ date_s_valid_ordinal_p, -1);
+ rb_define_singleton_method(cDate, "valid_civil?", date_s_valid_civil_p, -1);
+ rb_define_singleton_method(cDate, "valid_date?", date_s_valid_civil_p, -1);
+ rb_define_singleton_method(cDate, "valid_commercial?",
+ date_s_valid_commercial_p, -1);
+
+#ifndef NDEBUG
+ rb_define_private_method(CLASS_OF(cDate), "valid_weeknum?",
+ date_s_valid_weeknum_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "valid_nth_kday?",
+ date_s_valid_nth_kday_p, -1);
+ rb_define_private_method(CLASS_OF(cDate), "zone_to_diff",
+ date_s_zone_to_diff, 1);
+#endif
+
+ rb_define_singleton_method(cDate, "julian_leap?", date_s_julian_leap_p, 1);
+ rb_define_singleton_method(cDate, "gregorian_leap?",
+ date_s_gregorian_leap_p, 1);
+ rb_define_singleton_method(cDate, "leap?",
+ date_s_gregorian_leap_p, 1);
+
+#ifndef NDEBUG
+ rb_define_singleton_method(cDate, "new!", date_s_new_bang, -1);
+ rb_define_alias(rb_singleton_class(cDate), "new_l!", "new");
+#endif
+
+ rb_define_singleton_method(cDate, "jd", date_s_jd, -1);
+ rb_define_singleton_method(cDate, "ordinal", date_s_ordinal, -1);
+ rb_define_singleton_method(cDate, "civil", date_s_civil, -1);
+ rb_define_singleton_method(cDate, "commercial", date_s_commercial, -1);
+
+#ifndef NDEBUG
+ rb_define_singleton_method(cDate, "weeknum", date_s_weeknum, -1);
+ rb_define_singleton_method(cDate, "nth_kday", date_s_nth_kday, -1);
+#endif
+
+ rb_define_singleton_method(cDate, "today", date_s_today, -1);
+ rb_define_singleton_method(cDate, "_strptime", date_s__strptime, -1);
+ rb_define_singleton_method(cDate, "strptime", date_s_strptime, -1);
+ rb_define_singleton_method(cDate, "_parse", date_s__parse, -1);
+ rb_define_singleton_method(cDate, "parse", date_s_parse, -1);
+ rb_define_singleton_method(cDate, "_iso8601", date_s__iso8601, -1);
+ rb_define_singleton_method(cDate, "iso8601", date_s_iso8601, -1);
+ rb_define_singleton_method(cDate, "_rfc3339", date_s__rfc3339, -1);
+ rb_define_singleton_method(cDate, "rfc3339", date_s_rfc3339, -1);
+ rb_define_singleton_method(cDate, "_xmlschema", date_s__xmlschema, -1);
+ rb_define_singleton_method(cDate, "xmlschema", date_s_xmlschema, -1);
+ rb_define_singleton_method(cDate, "_rfc2822", date_s__rfc2822, -1);
+ rb_define_singleton_method(cDate, "_rfc822", date_s__rfc2822, -1);
+ rb_define_singleton_method(cDate, "rfc2822", date_s_rfc2822, -1);
+ rb_define_singleton_method(cDate, "rfc822", date_s_rfc2822, -1);
+ rb_define_singleton_method(cDate, "_httpdate", date_s__httpdate, -1);
+ rb_define_singleton_method(cDate, "httpdate", date_s_httpdate, -1);
+ rb_define_singleton_method(cDate, "_jisx0301", date_s__jisx0301, -1);
+ rb_define_singleton_method(cDate, "jisx0301", date_s_jisx0301, -1);
+
+ rb_define_method(cDate, "initialize", date_initialize, -1);
+ rb_define_method(cDate, "initialize_copy", d_lite_initialize_copy, 1);
+
+#ifndef NDEBUG
+ rb_define_method(cDate, "fill", d_lite_fill, 0);
+#endif
+
+ rb_define_method(cDate, "ajd", d_lite_ajd, 0);
+ rb_define_method(cDate, "amjd", d_lite_amjd, 0);
+ rb_define_method(cDate, "jd", d_lite_jd, 0);
+ rb_define_method(cDate, "mjd", d_lite_mjd, 0);
+ rb_define_method(cDate, "ld", d_lite_ld, 0);
+
+ rb_define_method(cDate, "year", d_lite_year, 0);
+ rb_define_method(cDate, "yday", d_lite_yday, 0);
+ rb_define_method(cDate, "mon", d_lite_mon, 0);
+ rb_define_method(cDate, "month", d_lite_mon, 0);
+ rb_define_method(cDate, "mday", d_lite_mday, 0);
+ rb_define_method(cDate, "day", d_lite_mday, 0);
+ rb_define_method(cDate, "day_fraction", d_lite_day_fraction, 0);
+
+ rb_define_method(cDate, "cwyear", d_lite_cwyear, 0);
+ rb_define_method(cDate, "cweek", d_lite_cweek, 0);
+ rb_define_method(cDate, "cwday", d_lite_cwday, 0);
+
+#ifndef NDEBUG
+ rb_define_private_method(cDate, "wnum0", d_lite_wnum0, 0);
+ rb_define_private_method(cDate, "wnum1", d_lite_wnum1, 0);
+#endif
+
+ rb_define_method(cDate, "wday", d_lite_wday, 0);
+
+ rb_define_method(cDate, "sunday?", d_lite_sunday_p, 0);
+ rb_define_method(cDate, "monday?", d_lite_monday_p, 0);
+ rb_define_method(cDate, "tuesday?", d_lite_tuesday_p, 0);
+ rb_define_method(cDate, "wednesday?", d_lite_wednesday_p, 0);
+ rb_define_method(cDate, "thursday?", d_lite_thursday_p, 0);
+ rb_define_method(cDate, "friday?", d_lite_friday_p, 0);
+ rb_define_method(cDate, "saturday?", d_lite_saturday_p, 0);
+
+#ifndef NDEBUG
+ rb_define_method(cDate, "nth_kday?", d_lite_nth_kday_p, 2);
+#endif
+
+ rb_define_private_method(cDate, "hour", d_lite_zero, 0);
+ rb_define_private_method(cDate, "min", d_lite_zero, 0);
+ rb_define_private_method(cDate, "minute", d_lite_zero, 0);
+ rb_define_private_method(cDate, "sec", d_lite_zero, 0);
+ rb_define_private_method(cDate, "second", d_lite_zero, 0);
+
+ rb_define_method(cDate, "julian?", d_lite_julian_p, 0);
+ rb_define_method(cDate, "gregorian?", d_lite_gregorian_p, 0);
+ rb_define_method(cDate, "leap?", d_lite_leap_p, 0);
+
+ rb_define_method(cDate, "start", d_lite_start, 0);
+ rb_define_method(cDate, "new_start", d_lite_new_start, -1);
+ rb_define_method(cDate, "italy", d_lite_italy, 0);
+ rb_define_method(cDate, "england", d_lite_england, 0);
+ rb_define_method(cDate, "julian", d_lite_julian, 0);
+ rb_define_method(cDate, "gregorian", d_lite_gregorian, 0);
+
+ rb_define_method(cDate, "+", d_lite_plus, 1);
+ rb_define_method(cDate, "-", d_lite_minus, 1);
+
+ rb_define_method(cDate, "next_day", d_lite_next_day, -1);
+ rb_define_method(cDate, "prev_day", d_lite_prev_day, -1);
+ rb_define_method(cDate, "next", d_lite_next, 0);
+ rb_define_method(cDate, "succ", d_lite_next, 0);
+
+ rb_define_method(cDate, ">>", d_lite_rshift, 1);
+ rb_define_method(cDate, "<<", d_lite_lshift, 1);
+
+ rb_define_method(cDate, "next_month", d_lite_next_month, -1);
+ rb_define_method(cDate, "prev_month", d_lite_prev_month, -1);
+ rb_define_method(cDate, "next_year", d_lite_next_year, -1);
+ rb_define_method(cDate, "prev_year", d_lite_prev_year, -1);
+
+ rb_define_method(cDate, "step", d_lite_step, -1);
+ rb_define_method(cDate, "upto", d_lite_upto, 1);
+ rb_define_method(cDate, "downto", d_lite_downto, 1);
+
+ rb_define_method(cDate, "<=>", d_lite_cmp, 1);
+ rb_define_method(cDate, "===", d_lite_equal, 1);
+ rb_define_method(cDate, "eql?", d_lite_eql_p, 1);
+ rb_define_method(cDate, "hash", d_lite_hash, 0);
+
+ rb_define_method(cDate, "to_s", d_lite_to_s, 0);
+#ifndef NDEBUG
+ rb_define_method(cDate, "inspect_raw", d_lite_inspect_raw, 0);
+#endif
+ rb_define_method(cDate, "inspect", d_lite_inspect, 0);
+
+ rb_define_method(cDate, "strftime", d_lite_strftime, -1);
+
+ rb_define_method(cDate, "asctime", d_lite_asctime, 0);
+ rb_define_method(cDate, "ctime", d_lite_asctime, 0);
+ rb_define_method(cDate, "iso8601", d_lite_iso8601, 0);
+ rb_define_method(cDate, "xmlschema", d_lite_iso8601, 0);
+ rb_define_method(cDate, "rfc3339", d_lite_rfc3339, 0);
+ rb_define_method(cDate, "rfc2822", d_lite_rfc2822, 0);
+ rb_define_method(cDate, "rfc822", d_lite_rfc2822, 0);
+ rb_define_method(cDate, "httpdate", d_lite_httpdate, 0);
+ rb_define_method(cDate, "jisx0301", d_lite_jisx0301, 0);
+
+ rb_define_method(cDate, "deconstruct_keys", d_lite_deconstruct_keys, 1);
+
+#ifndef NDEBUG
+ rb_define_method(cDate, "marshal_dump_old", d_lite_marshal_dump_old, 0);
+#endif
+ rb_define_method(cDate, "marshal_dump", d_lite_marshal_dump, 0);
+ rb_define_method(cDate, "marshal_load", d_lite_marshal_load, 1);
+ rb_define_singleton_method(cDate, "_load", date_s__load, 1);
+
+ /*
+ * == DateTime
+ *
+ * A subclass of Date that easily handles date, hour, minute, second,
+ * and offset.
+ *
+ * DateTime class is considered deprecated. Use Time class.
+ *
+ * DateTime does not consider any leap seconds, does not track
+ * any summer time rules.
+ *
+ * A DateTime object is created with DateTime::new, DateTime::jd,
+ * DateTime::ordinal, DateTime::commercial, DateTime::parse,
+ * DateTime::strptime, DateTime::now, Time#to_datetime, etc.
+ *
+ * require 'date'
+ *
+ * DateTime.new(2001,2,3,4,5,6)
+ * #=> #<DateTime: 2001-02-03T04:05:06+00:00 ...>
+ *
+ * The last element of day, hour, minute, or second can be a
+ * fractional number. The fractional number's precision is assumed
+ * at most nanosecond.
+ *
+ * DateTime.new(2001,2,3.5)
+ * #=> #<DateTime: 2001-02-03T12:00:00+00:00 ...>
+ *
+ * An optional argument, the offset, indicates the difference
+ * between the local time and UTC. For example, <tt>Rational(3,24)</tt>
+ * represents ahead of 3 hours of UTC, <tt>Rational(-5,24)</tt> represents
+ * behind of 5 hours of UTC. The offset should be -1 to +1, and
+ * its precision is assumed at most second. The default value is
+ * zero (equals to UTC).
+ *
+ * DateTime.new(2001,2,3,4,5,6,Rational(3,24))
+ * #=> #<DateTime: 2001-02-03T04:05:06+03:00 ...>
+ *
+ * The offset also accepts string form:
+ *
+ * DateTime.new(2001,2,3,4,5,6,'+03:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+03:00 ...>
+ *
+ * An optional argument, the day of calendar reform (+start+), denotes
+ * a Julian day number, which should be 2298874 to 2426355 or
+ * negative/positive infinity.
+ * The default value is +Date::ITALY+ (2299161=1582-10-15).
+ *
+ * A DateTime object has various methods. See each reference.
+ *
+ * d = DateTime.parse('3rd Feb 2001 04:05:06+03:30')
+ * #=> #<DateTime: 2001-02-03T04:05:06+03:30 ...>
+ * d.hour #=> 4
+ * d.min #=> 5
+ * d.sec #=> 6
+ * d.offset #=> (7/48)
+ * d.zone #=> "+03:30"
+ * d += Rational('1.5')
+ * #=> #<DateTime: 2001-02-04%16:05:06+03:30 ...>
+ * d = d.new_offset('+09:00')
+ * #=> #<DateTime: 2001-02-04%21:35:06+09:00 ...>
+ * d.strftime('%I:%M:%S %p')
+ * #=> "09:35:06 PM"
+ * d > DateTime.new(1999)
+ * #=> true
+ *
+ * === When should you use DateTime and when should you use Time?
+ *
+ * It's a common misconception that
+ * {William Shakespeare}[https://en.wikipedia.org/wiki/William_Shakespeare]
+ * and
+ * {Miguel de Cervantes}[https://en.wikipedia.org/wiki/Miguel_de_Cervantes]
+ * died on the same day in history -
+ * so much so that UNESCO named April 23 as
+ * {World Book Day because of this fact}[https://en.wikipedia.org/wiki/World_Book_Day].
+ * However, because England hadn't yet adopted the
+ * {Gregorian Calendar Reform}[https://en.wikipedia.org/wiki/Gregorian_calendar#Gregorian_reform]
+ * (and wouldn't until {1752}[https://en.wikipedia.org/wiki/Calendar_(New_Style)_Act_1750])
+ * their deaths are actually 10 days apart.
+ * Since Ruby's Time class implements a
+ * {proleptic Gregorian calendar}[https://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar]
+ * and has no concept of calendar reform there's no way
+ * to express this with Time objects. This is where DateTime steps in:
+ *
+ * shakespeare = DateTime.iso8601('1616-04-23', Date::ENGLAND)
+ * #=> Tue, 23 Apr 1616 00:00:00 +0000
+ * cervantes = DateTime.iso8601('1616-04-23', Date::ITALY)
+ * #=> Sat, 23 Apr 1616 00:00:00 +0000
+ *
+ * Already you can see something is weird - the days of the week
+ * are different. Taking this further:
+ *
+ * cervantes == shakespeare
+ * #=> false
+ * (shakespeare - cervantes).to_i
+ * #=> 10
+ *
+ * This shows that in fact they died 10 days apart (in reality
+ * 11 days since Cervantes died a day earlier but was buried on
+ * the 23rd). We can see the actual date of Shakespeare's death by
+ * using the #gregorian method to convert it:
+ *
+ * shakespeare.gregorian
+ * #=> Tue, 03 May 1616 00:00:00 +0000
+ *
+ * So there's an argument that all the celebrations that take
+ * place on the 23rd April in Stratford-upon-Avon are actually
+ * the wrong date since England is now using the Gregorian calendar.
+ * You can see why when we transition across the reform
+ * date boundary:
+ *
+ * # start off with the anniversary of Shakespeare's birth in 1751
+ * shakespeare = DateTime.iso8601('1751-04-23', Date::ENGLAND)
+ * #=> Tue, 23 Apr 1751 00:00:00 +0000
+ *
+ * # add 366 days since 1752 is a leap year and April 23 is after February 29
+ * shakespeare + 366
+ * #=> Thu, 23 Apr 1752 00:00:00 +0000
+ *
+ * # add another 365 days to take us to the anniversary in 1753
+ * shakespeare + 366 + 365
+ * #=> Fri, 04 May 1753 00:00:00 +0000
+ *
+ * As you can see, if we're accurately tracking the number of
+ * {solar years}[https://en.wikipedia.org/wiki/Tropical_year]
+ * since Shakespeare's birthday then the correct anniversary date
+ * would be the 4th May and not the 23rd April.
+ *
+ * So when should you use DateTime in Ruby and when should
+ * you use Time? Almost certainly you'll want to use Time
+ * since your app is probably dealing with current dates and
+ * times. However, if you need to deal with dates and times in a
+ * historical context you'll want to use DateTime to avoid
+ * making the same mistakes as UNESCO. If you also have to deal
+ * with timezones then best of luck - just bear in mind that
+ * you'll probably be dealing with
+ * {local solar times}[https://en.wikipedia.org/wiki/Solar_time],
+ * since it wasn't until the 19th century that the introduction
+ * of the railways necessitated the need for
+ * {Standard Time}[https://en.wikipedia.org/wiki/Standard_time#Great_Britain]
+ * and eventually timezones.
+ */
+
+ cDateTime = rb_define_class("DateTime", cDate);
+ rb_define_alloc_func(cDateTime, d_lite_s_alloc_complex);
+
+ rb_define_singleton_method(cDateTime, "jd", datetime_s_jd, -1);
+ rb_define_singleton_method(cDateTime, "ordinal", datetime_s_ordinal, -1);
+ rb_define_singleton_method(cDateTime, "civil", datetime_s_civil, -1);
+ rb_define_singleton_method(cDateTime, "new", datetime_s_civil, -1);
+ rb_define_singleton_method(cDateTime, "commercial",
+ datetime_s_commercial, -1);
+
+#ifndef NDEBUG
+ rb_define_singleton_method(cDateTime, "weeknum",
+ datetime_s_weeknum, -1);
+ rb_define_singleton_method(cDateTime, "nth_kday",
+ datetime_s_nth_kday, -1);
+#endif
+
+ rb_undef_method(CLASS_OF(cDateTime), "today");
+
+ rb_define_singleton_method(cDateTime, "now", datetime_s_now, -1);
+ rb_define_singleton_method(cDateTime, "_strptime",
+ datetime_s__strptime, -1);
+ rb_define_singleton_method(cDateTime, "strptime",
+ datetime_s_strptime, -1);
+ rb_define_singleton_method(cDateTime, "parse",
+ datetime_s_parse, -1);
+ rb_define_singleton_method(cDateTime, "iso8601",
+ datetime_s_iso8601, -1);
+ rb_define_singleton_method(cDateTime, "rfc3339",
+ datetime_s_rfc3339, -1);
+ rb_define_singleton_method(cDateTime, "xmlschema",
+ datetime_s_xmlschema, -1);
+ rb_define_singleton_method(cDateTime, "rfc2822",
+ datetime_s_rfc2822, -1);
+ rb_define_singleton_method(cDateTime, "rfc822",
+ datetime_s_rfc2822, -1);
+ rb_define_singleton_method(cDateTime, "httpdate",
+ datetime_s_httpdate, -1);
+ rb_define_singleton_method(cDateTime, "jisx0301",
+ datetime_s_jisx0301, -1);
+
+ rb_define_method(cDateTime, "hour", d_lite_hour, 0);
+ rb_define_method(cDateTime, "min", d_lite_min, 0);
+ rb_define_method(cDateTime, "minute", d_lite_min, 0);
+ rb_define_method(cDateTime, "sec", d_lite_sec, 0);
+ rb_define_method(cDateTime, "second", d_lite_sec, 0);
+ rb_define_method(cDateTime, "sec_fraction", d_lite_sec_fraction, 0);
+ rb_define_method(cDateTime, "second_fraction", d_lite_sec_fraction, 0);
+ rb_define_method(cDateTime, "offset", d_lite_offset, 0);
+ rb_define_method(cDateTime, "zone", d_lite_zone, 0);
+ rb_define_method(cDateTime, "new_offset", d_lite_new_offset, -1);
+
+ rb_define_method(cDateTime, "to_s", dt_lite_to_s, 0);
+
+ rb_define_method(cDateTime, "strftime", dt_lite_strftime, -1);
+
+ rb_define_method(cDateTime, "iso8601", dt_lite_iso8601, -1);
+ rb_define_method(cDateTime, "xmlschema", dt_lite_iso8601, -1);
+ rb_define_method(cDateTime, "rfc3339", dt_lite_rfc3339, -1);
+ rb_define_method(cDateTime, "jisx0301", dt_lite_jisx0301, -1);
+
+ rb_define_method(cDateTime, "deconstruct_keys", dt_lite_deconstruct_keys, 1);
+
+ /* conversions */
+
+ rb_define_method(rb_cTime, "to_time", time_to_time, 0);
+ rb_define_method(rb_cTime, "to_date", time_to_date, 0);
+ rb_define_method(rb_cTime, "to_datetime", time_to_datetime, 0);
+
+ rb_define_method(cDate, "to_time", date_to_time, 0);
+ rb_define_method(cDate, "to_date", date_to_date, 0);
+ rb_define_method(cDate, "to_datetime", date_to_datetime, 0);
+
+ rb_define_method(cDateTime, "to_time", datetime_to_time, 0);
+ rb_define_method(cDateTime, "to_date", datetime_to_date, 0);
+ rb_define_method(cDateTime, "to_datetime", datetime_to_datetime, 0);
+
+#ifndef NDEBUG
+ /* tests */
+
+ rb_define_singleton_method(cDate, "test_civil", date_s_test_civil, 0);
+ rb_define_singleton_method(cDate, "test_ordinal", date_s_test_ordinal, 0);
+ rb_define_singleton_method(cDate, "test_commercial",
+ date_s_test_commercial, 0);
+ rb_define_singleton_method(cDate, "test_weeknum", date_s_test_weeknum, 0);
+ rb_define_singleton_method(cDate, "test_nth_kday", date_s_test_nth_kday, 0);
+ rb_define_singleton_method(cDate, "test_unit_conv",
+ date_s_test_unit_conv, 0);
+ rb_define_singleton_method(cDate, "test_all", date_s_test_all, 0);
+#endif
+}
+
+/*
+Local variables:
+c-file-style: "ruby"
+End:
+*/
generated by cgit v1.2.3 (git 2.25.1) at 2026-06-03 15:05:19 +0000