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-rw-r--r--ruby_1_9_3/ext/date/date_core.c9774
1 files changed, 9774 insertions, 0 deletions
diff --git a/ruby_1_9_3/ext/date/date_core.c b/ruby_1_9_3/ext/date/date_core.c
new file mode 100644
index 0000000000..4048d1345d
--- /dev/null
+++ b/ruby_1_9_3/ext/date/date_core.c
@@ -0,0 +1,9774 @@
+/*
+ date_core.c: Coded by Tadayoshi Funaba 2010, 2011
+*/
+
+#include "ruby.h"
+#include "ruby/encoding.h"
+#include <math.h>
+#include <time.h>
+
+#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 half_days_in_day, day_in_nanoseconds;
+static double positive_inf, negative_inf;
+
+#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)
+
+inline static VALUE
+f_cmp(VALUE x, VALUE y)
+{
+ if (FIXNUM_P(x) && FIXNUM_P(y)) {
+ long c = FIX2LONG(x) - FIX2LONG(y);
+ if (c > 0)
+ c = 1;
+ else if (c < 0)
+ c = -1;
+ return INT2FIX(c);
+ }
+ return rb_funcall(x, id_cmp, 1, 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, rb_intern(">="), 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, rb_intern("=="), 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 = RRATIONAL(x)->num;
+ 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)
+#if FLT_RADIX == 2 && FLT_MANT_DIG > 22
+#define USE_FLOAT
+#define sg_cast float
+#else
+#define sg_cast double
+#endif
+#endif
+
+/* 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;
+ VALUE nth; /* not always canonicalized */
+ int jd; /* as utc */
+ /* df is zero */
+ /* sf is zero */
+ /* of is zero */
+#ifndef USE_FLOAT
+ double sg; /* 2298874..2426355 or -/+oo */
+#else
+ float sg; /* at most 22 bits */
+#endif
+ /* 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;
+ VALUE nth; /* not always canonicalized */
+ int jd; /* as utc */
+ int df; /* as utc, in secs */
+ VALUE sf; /* in nano secs */
+ int of; /* in secs */
+#ifndef USE_FLOAT
+ double sg; /* 2298874..2426355 or -/+oo */
+#else
+ float sg; /* at most 22 bits */
+#endif
+ /* 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
+};
+
+union DateData {
+ unsigned flags;
+ struct SimpleDateData s;
+ struct ComplexDateData c;
+};
+
+#define get_d1(x)\
+ union DateData *dat;\
+ Data_Get_Struct(x, union DateData, dat);
+
+#define get_d1a(x)\
+ union DateData *adat;\
+ Data_Get_Struct(x, union DateData, adat);
+
+#define get_d1b(x)\
+ union DateData *bdat;\
+ Data_Get_Struct(x, union DateData, bdat);
+
+#define get_d2(x,y)\
+ union DateData *adat, *bdat;\
+ Data_Get_Struct(x, union DateData, adat);\
+ Data_Get_Struct(y, union DateData, bdat);
+
+inline static VALUE
+canon(VALUE x)
+{
+ if (TYPE(x) == T_RATIONAL) {
+ VALUE den = RRATIONAL(x)->den;
+ if (FIXNUM_P(den) && FIX2LONG(den) == 1)
+ return RRATIONAL(x)->num;
+ }
+ return x;
+}
+
+#ifndef USE_PACK
+#define set_to_simple(x, _nth, _jd ,_sg, _year, _mon, _mday, _flags) \
+{\
+ (x)->nth = canon(_nth);\
+ (x)->jd = _jd;\
+ (x)->sg = (sg_cast)(_sg);\
+ (x)->year = _year;\
+ (x)->mon = _mon;\
+ (x)->mday = _mday;\
+ (x)->flags = _flags;\
+}
+#else
+#define set_to_simple(x, _nth, _jd ,_sg, _year, _mon, _mday, _flags) \
+{\
+ (x)->nth = canon(_nth);\
+ (x)->jd = _jd;\
+ (x)->sg = (sg_cast)(_sg);\
+ (x)->year = _year;\
+ (x)->pc = PACK2(_mon, _mday);\
+ (x)->flags = _flags;\
+}
+#endif
+
+#ifndef USE_PACK
+#define set_to_complex(x, _nth, _jd ,_df, _sf, _of, _sg,\
+_year, _mon, _mday, _hour, _min, _sec, _flags) \
+{\
+ (x)->nth = canon(_nth);\
+ (x)->jd = _jd;\
+ (x)->df = _df;\
+ (x)->sf = canon(_sf);\
+ (x)->of = _of;\
+ (x)->sg = (sg_cast)(_sg);\
+ (x)->year = _year;\
+ (x)->mon = _mon;\
+ (x)->mday = _mday;\
+ (x)->hour = _hour;\
+ (x)->min = _min;\
+ (x)->sec = _sec;\
+ (x)->flags = _flags;\
+}
+#else
+#define set_to_complex(x, _nth, _jd ,_df, _sf, _of, _sg,\
+_year, _mon, _mday, _hour, _min, _sec, _flags) \
+{\
+ (x)->nth = canon(_nth);\
+ (x)->jd = _jd;\
+ (x)->df = _df;\
+ (x)->sf = canon(_sf);\
+ (x)->of = _of;\
+ (x)->sg = (sg_cast)(_sg);\
+ (x)->year = _year;\
+ (x)->pc = PACK5(_mon, _mday, _hour, _min, _sec);\
+ (x)->flags = _flags;\
+}
+#endif
+
+#ifndef USE_PACK
+#define copy_simple_to_complex(x, y) \
+{\
+ (x)->nth = (y)->nth;\
+ (x)->jd = (y)->jd;\
+ (x)->df = 0;\
+ (x)->sf = INT2FIX(0);\
+ (x)->of = 0;\
+ (x)->sg = (sg_cast)((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;\
+}
+#else
+#define copy_simple_to_complex(x, y) \
+{\
+ (x)->nth = (y)->nth;\
+ (x)->jd = (y)->jd;\
+ (x)->df = 0;\
+ (x)->sf = INT2FIX(0);\
+ (x)->of = 0;\
+ (x)->sg = (sg_cast)((y)->sg);\
+ (x)->year = (y)->year;\
+ (x)->pc = PACK5(EX_MON((y)->pc), EX_MDAY((y)->pc), 0, 0, 0);\
+ (x)->flags = (y)->flags;\
+}
+#endif
+
+#ifndef USE_PACK
+#define copy_complex_to_simple(x, y) \
+{\
+ (x)->nth = (y)->nth;\
+ (x)->jd = (y)->jd;\
+ (x)->sg = (sg_cast)((y)->sg);\
+ (x)->year = (y)->year;\
+ (x)->mon = (y)->mon;\
+ (x)->mday = (y)->mday;\
+ (x)->flags = (y)->flags;\
+}
+#else
+#define copy_complex_to_simple(x, y) \
+{\
+ (x)->nth = (y)->nth;\
+ (x)->jd = (y)->jd;\
+ (x)->sg = (sg_cast)((y)->sg);\
+ (x)->year = (y)->year;\
+ (x)->pc = PACK2(EX_MON((y)->pc), EX_MDAY((y)->pc));\
+ (x)->flags = (y)->flags;\
+}
+#endif
+
+/* base */
+
+static int c_valid_civil_p(int, int, int, double,
+ int *, int *, int *, int *);
+
+static int
+c_find_fdoy(int y, double sg, int *rjd, int *ns)
+{
+ int d, rm, rd;
+
+ 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;
+
+ 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
+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;
+
+ 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)
+{
+ double a, b, jd;
+
+ if (m <= 2) {
+ y -= 1;
+ m += 12;
+ }
+ a = floor(y / 100.0);
+ b = 2 - a + floor(a / 4.0);
+ jd = floor(365.25 * (y + 4716)) +
+ floor(30.6001 * (m + 1)) +
+ d + b - 1524;
+ if (jd < sg) {
+ jd -= b;
+ *ns = 0;
+ }
+ else
+ *ns = 1;
+
+ *rjd = (int)jd;
+}
+
+static void
+c_jd_to_civil(int jd, double sg, int *ry, int *rm, int *rdom)
+{
+ 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
+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
+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];
+}
+
+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 (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
+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
+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
+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 >= (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
+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
+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
+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);
+}
+
+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
+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)
+{
+ assert(FIXNUM_P(jd) || RB_TYPE_P(jd, T_BIGNUM));
+ *nth = f_idiv(jd, INT2FIX(CM_PERIOD));
+ if (f_zero_p(*nth)) {
+ assert(FIXNUM_P(jd));
+ *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 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
+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)) {
+ 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;
+}
+
+
+#ifdef USE_PACK
+inline static int
+m_pc(union DateData *x)
+{
+ if (simple_dat_p(x)) {
+ get_s_civil(x);
+ return x->s.pc;
+ }
+ else {
+ get_c_civil(x);
+ get_c_time(x);
+ return x->c.pc;
+ }
+}
+#endif
+
+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)\
+{\
+ int a;\
+ s = (of < 0) ? '-' : '+';\
+ a = (of < 0) ? -of : of;\
+ h = a / HOUR_IN_SECONDS;\
+ m = a % HOUR_IN_SECONDS / MINUTE_IN_SECONDS;\
+}
+
+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_datetime_p(VALUE x)
+{
+ return f_kind_of_p(x, cDateTime);
+}
+
+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);
+}
+
+#ifndef NDEBUG
+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
+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)
+{
+ 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:
+ if (!k_numeric_p(vof))
+ rb_raise(rb_eTypeError, "expected numeric");
+ vof = f_to_r(vof);
+#ifdef CANONICALIZATION_FOR_MATHN
+ if (!k_rational_p(vof))
+ return offset_to_sec(vof, rof);
+#endif
+ /* fall through */
+ case T_RATIONAL:
+ {
+ VALUE vs, vn, vd;
+ long n;
+
+ vs = day_to_sec(vof);
+
+#ifdef CANONICALIZATION_FOR_MATHN
+ if (!k_rational_p(vs)) {
+ 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;
+ }
+#endif
+ vn = RRATIONAL(vs)->num;
+ vd = RRATIONAL(vs)->den;
+
+ 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");
+ 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) \
+{\
+ if (!c_valid_start_p(sg)) {\
+ sg = 0;\
+ rb_warning("invalid start is ignored");\
+ }\
+}
+
+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
+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]) -> bool
+ *
+ * Just returns true. It's nonsense, but is for symmetry.
+ *
+ * For example:
+ *
+ * Date.valid_jd?(2451944) #=> true
+ *
+ * See also 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);
+
+ 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
+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]) -> bool
+ * Date.valid_date?(year, month, mday[, start=Date::ITALY]) -> bool
+ *
+ * Returns true if the given calendar date is valid, and false if not.
+ *
+ * For example:
+ *
+ * Date.valid_date?(2001,2,3) #=> true
+ * Date.valid_date?(2001,2,29) #=> false
+ *
+ * See also jd and civil.
+ */
+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] = 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
+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]) -> bool
+ *
+ * Returns true if the given ordinal date is valid, and false if not.
+ *
+ * For example:
+ *
+ * Date.valid_ordinal?(2001,34) #=> true
+ * Date.valid_ordinal?(2001,366) #=> false
+ *
+ * See also jd and 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);
+
+ 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
+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]) -> bool
+ *
+ * Returns true if the given week date is valid, and false if not.
+ *
+ * For example:
+ *
+ * Date.valid_commercial?(2001,5,6) #=> true
+ * Date.valid_commercial?(2001,5,8) #=> false
+ *
+ * See also jd and 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);
+
+ 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
+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;
+ }
+}
+
+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);
+}
+
+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;
+ }
+}
+
+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);
+}
+
+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;
+}
+
+static VALUE
+date_s_zone_to_diff(VALUE klass, VALUE str)
+{
+ return date_zone_to_diff(str);
+}
+#endif
+
+/*
+ * call-seq:
+ * Date.julian_leap?(year) -> bool
+ *
+ * Returns true if the given year is a leap year of the proleptic
+ * Julian calendar.
+ *
+ * For example:
+ *
+ * Date.julian_leap?(1900) #=> true
+ * Date.julian_leap?(1901) #=> false
+ */
+static VALUE
+date_s_julian_leap_p(VALUE klass, VALUE y)
+{
+ VALUE nth;
+ int ry;
+
+ decode_year(y, +1, &nth, &ry);
+ return f_boolcast(c_julian_leap_p(ry));
+}
+
+/*
+ * call-seq:
+ * Date.gregorian_leap?(year) -> bool
+ * Date.leap?(year) -> bool
+ *
+ * Returns true if the given year is a leap year of the proleptic
+ * Gregorian calendar.
+ *
+ * For example:
+ *
+ * Date.gregorian_leap?(1900) #=> false
+ * Date.gregorian_leap?(2000) #=> true
+ */
+static VALUE
+date_s_gregorian_leap_p(VALUE klass, VALUE y)
+{
+ VALUE nth;
+ int ry;
+
+ decode_year(y, -1, &nth, &ry);
+ return f_boolcast(c_gregorian_leap_p(ry));
+}
+
+static void
+d_lite_gc_mark(union DateData *dat)
+{
+ if (simple_dat_p(dat))
+ rb_gc_mark(dat->s.nth);
+ else {
+ rb_gc_mark(dat->c.nth);
+ rb_gc_mark(dat->c.sf);
+
+ }
+}
+
+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 = Data_Make_Struct(klass, struct SimpleDateData,
+ d_lite_gc_mark, -1, dat);
+ set_to_simple(dat, nth, jd, sg, y, m, d, flags & ~COMPLEX_DAT);
+
+ 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 = Data_Make_Struct(klass, struct ComplexDateData,
+ d_lite_gc_mark, -1, dat);
+ set_to_complex(dat, nth, jd, df, sf, of, sg,
+ y, m, d, h, min, s, flags | COMPLEX_DAT);
+
+ 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(rb_eArgError, "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
+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 = RRATIONAL(x)->den;
+ return FIXNUM_P(den) && FIX2LONG(den) == 1;
+ }
+ break;
+ }
+ return 0;
+}
+
+inline static VALUE
+to_integer(VALUE x)
+{
+ if (FIXNUM_P(x) || RB_TYPE_P(x, T_BIGNUM))
+ 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) \
+{\
+ s = s##_trunc(v##s, &fr);\
+ if (f_nonzero_p(fr)) {\
+ if (argc > n)\
+ rb_raise(rb_eArgError, "invalid fraction");\
+ fr2 = fr;\
+ }\
+}
+
+#define num2int_with_frac(s,n) \
+{\
+ s = NUM2INT(s##_trunc(v##s, &fr));\
+ if (f_nonzero_p(fr)) {\
+ if (argc > n)\
+ rb_raise(rb_eArgError, "invalid fraction");\
+ fr2 = fr;\
+ }\
+}
+
+#define canon24oc() \
+{\
+ if (rh == 24) {\
+ rh = 0;\
+ fr2 = f_add(fr2, INT2FIX(1));\
+ }\
+}
+
+#define add_frac() \
+{\
+ if (f_nonzero_p(fr2))\
+ ret = d_lite_plus(ret, fr2);\
+}
+
+#define val2sg(vsg,dsg) \
+{\
+ dsg = NUM2DBL(vsg);\
+ if (!c_valid_start_p(dsg)) {\
+ dsg = DEFAULT_SG;\
+ rb_warning("invalid start is ignored");\
+ }\
+}
+
+static VALUE d_lite_plus(VALUE, VALUE);
+
+/*
+ * call-seq:
+ * Date.jd([jd=0[, start=Date::ITALY]]) -> date
+ *
+ * Creates a date object denoting the given chronological Julian day
+ * number.
+ *
+ * For example:
+ *
+ * Date.jd(2451944) #=> #<Date: 2001-02-03 ...>
+ * Date.jd(2451945) #=> #<Date: 2001-02-04 ...>
+ * Date.jd(0) #=> #<Date: -4712-01-01 ...>
+ *
+ * See also 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:
+ 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
+ *
+ * Creates a date object denoting the given ordinal date.
+ *
+ * The day of year should be a negative or a positive number (as a
+ * relative day from the end of year when negative). It should not be
+ * zero.
+ *
+ * For example:
+ *
+ * Date.ordinal(2001) #=> #<Date: 2001-01-01 ...>
+ * Date.ordinal(2001,34) #=> #<Date: 2001-02-03 ...>
+ * Date.ordinal(2001,-1) #=> #<Date: 2001-12-31 ...>
+ *
+ * See also jd and 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:
+ num2int_with_frac(d, positive_inf);
+ case 1:
+ y = vy;
+ }
+
+ {
+ VALUE nth;
+ int ry, rd, rjd, ns;
+
+ if (!valid_ordinal_p(y, d, sg,
+ &nth, &ry,
+ &rd, &rjd,
+ &ns))
+ rb_raise(rb_eArgError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+
+/*
+ * call-seq:
+ * Date.civil([year=-4712[, month=1[, mday=1[, start=Date::ITALY]]]]) -> date
+ * Date.new([year=-4712[, month=1[, mday=1[, start=Date::ITALY]]]]) -> date
+ *
+ * Creates a date object denoting the given calendar date.
+ *
+ * In this class, BCE years are counted astronomically. Thus, the
+ * year before the year 1 is the year zero, and the year preceding the
+ * year zero is the year -1. The month and the day of month should be
+ * a negative or a positive number (as a relative month/day from the
+ * end of year/month when negative). They should not be zero.
+ *
+ * The last argument should be a Julian day number which denotes the
+ * day of calendar reform. Date::ITALY (2299161=1582-10-15),
+ * Date::ENGLAND (2361222=1752-09-14), Date::GREGORIAN (the proleptic
+ * Gregorian calendar) and Date::JULIAN (the proleptic Julian
+ * calendar) can be specified as a day of calendar reform.
+ *
+ * For example:
+ *
+ * Date.new(2001) #=> #<Date: 2001-01-01 ...>
+ * Date.new(2001,2,3) #=> #<Date: 2001-02-03 ...>
+ * Date.new(2001,2,-1) #=> #<Date: 2001-02-28 ...>
+ *
+ * See also jd.
+ */
+static VALUE
+date_s_civil(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vd, vsg, y, fr, fr2, ret;
+ int m, d;
+ double sg;
+
+ 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:
+ num2int_with_frac(d, positive_inf);
+ case 2:
+ m = NUM2INT(vm);
+ case 1:
+ 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(rb_eArgError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ 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(rb_eArgError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ ry, rm, rd,
+ HAVE_JD | HAVE_CIVIL);
+ }
+ add_frac();
+ return ret;
+}
+
+/*
+ * call-seq:
+ * Date.commercial([cwyear=-4712[, cweek=1[, cwday=1[, start=Date::ITALY]]]]) -> date
+ *
+ * Creates a date object denoting the given week date.
+ *
+ * The week and the day of week should be a negative or a positive
+ * number (as a relative week/day from the end of year/week when
+ * negative). They should not be zero.
+ *
+ * For example:
+ *
+ * Date.commercial(2001) #=> #<Date: 2001-01-01 ...>
+ * Date.commercial(2002) #=> #<Date: 2001-12-31 ...>
+ * Date.commercial(2001,5,6) #=> #<Date: 2001-02-03 ...>
+ *
+ * See also jd and new.
+ */
+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:
+ 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_commercial_p(y, w, d, sg,
+ &nth, &ry,
+ &rw, &rd, &rjd,
+ &ns))
+ rb_raise(rb_eArgError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+
+#ifndef NDEBUG
+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(rb_eArgError, "invalid date");
+
+ ret = d_simple_new_internal(klass,
+ nth, rjd,
+ sg,
+ 0, 0, 0,
+ HAVE_JD);
+ }
+ add_frac();
+ return ret;
+}
+
+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(rb_eArgError, "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
+ *
+ * For example:
+ *
+ * Date.today #=> #<Date: 2011-06-11 ..>
+ *
+ * Creates a date object denoting the present day.
+ */
+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 set_hash(k,v) rb_hash_aset(hash, ID2SYM(rb_intern(k)), v)
+#define ref_hash(k) rb_hash_aref(hash, ID2SYM(rb_intern(k)))
+#define del_hash(k) rb_hash_delete(hash, ID2SYM(rb_intern(k)))
+
+static VALUE
+rt_rewrite_frags(VALUE hash)
+{
+ VALUE seconds;
+
+ seconds = ref_hash("seconds");
+ if (!NIL_P(seconds)) {
+ VALUE d, h, min, s, fr;
+
+ 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);
+ del_hash("seconds");
+ del_hash("offset");
+ }
+ return hash;
+}
+
+#define sym(x) ID2SYM(rb_intern(x))
+
+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;
+ int g, e;
+ VALUE k, a, d;
+
+ if (NIL_P(tab)) {
+ tab = rb_ary_new3(11,
+ rb_ary_new3(2,
+ sym("time"),
+ rb_ary_new3(3,
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ Qnil,
+ rb_ary_new3(1,
+ sym("jd"))),
+ rb_ary_new3(2,
+ sym("ordinal"),
+ rb_ary_new3(5,
+ sym("year"),
+ sym("yday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ sym("civil"),
+ rb_ary_new3(6,
+ sym("year"),
+ sym("mon"),
+ sym("mday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ sym("commercial"),
+ rb_ary_new3(6,
+ sym("cwyear"),
+ sym("cweek"),
+ sym("cwday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ sym("wday"),
+ rb_ary_new3(4,
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ sym("wnum0"),
+ rb_ary_new3(6,
+ sym("year"),
+ sym("wnum0"),
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ sym("wnum1"),
+ rb_ary_new3(6,
+ sym("year"),
+ sym("wnum1"),
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ Qnil,
+ rb_ary_new3(6,
+ sym("cwyear"),
+ sym("cweek"),
+ sym("wday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ Qnil,
+ rb_ary_new3(6,
+ sym("year"),
+ sym("wnum0"),
+ sym("cwday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))),
+ rb_ary_new3(2,
+ Qnil,
+ rb_ary_new3(6,
+ sym("year"),
+ sym("wnum1"),
+ sym("cwday"),
+ sym("hour"),
+ sym("min"),
+ sym("sec"))));
+ rb_gc_register_mark_object(tab);
+ }
+
+ {
+ int i, eno = 0, idx = 0;
+
+ for (i = 0; i < RARRAY_LENINT(tab); i++) {
+ VALUE x, a;
+
+ x = RARRAY_PTR(tab)[i];
+ a = RARRAY_PTR(x)[1];
+
+ {
+ int j, n = 0;
+
+ for (j = 0; j < RARRAY_LENINT(a); j++)
+ if (!NIL_P(ref_hash0(RARRAY_PTR(a)[j])))
+ n++;
+ if (n > eno) {
+ eno = n;
+ idx = i;
+ }
+ }
+ }
+ if (eno == 0)
+ g = 0;
+ else {
+ g = 1;
+ k = RARRAY_PTR(RARRAY_PTR(tab)[idx])[0];
+ a = RARRAY_PTR(RARRAY_PTR(tab)[idx])[1];
+ e = eno;
+ }
+ }
+
+ d = Qnil;
+
+ if (g && !NIL_P(k) && (RARRAY_LENINT(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")) {
+ int i;
+
+ for (i = 0; i < RARRAY_LENINT(a); i++) {
+ VALUE e = RARRAY_PTR(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")) {
+ int i;
+
+ for (i = 0; i < RARRAY_LENINT(a); i++) {
+ VALUE e = RARRAY_PTR(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")) {
+ int i;
+
+ for (i = 0; i < RARRAY_LENINT(a); i++) {
+ VALUE e = RARRAY_PTR(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")) {
+ int i;
+
+ for (i = 0; i < RARRAY_LENINT(a); i++) {
+ VALUE e = RARRAY_PTR(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 (g && 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(rb_eArgError, "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(rb_eArgError, "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 (!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 {
+ StringValue(vfmt);
+ 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);
+ OBJ_INFECT(zone, vstr);
+ set_hash("zone", zone);
+ }
+ if (!NIL_P(left)) {
+ rb_enc_copy(left, vstr);
+ OBJ_INFECT(left, vstr);
+ set_hash("leftover", left);
+ }
+ }
+
+ return hash;
+}
+
+/*
+ * call-seq:
+ * Date._strptime(string[, format='%F']) -> hash
+ *
+ * Parses the given representation of date and time with the given
+ * template, and returns a hash of parsed elements.
+ *
+ * For example:
+ *
+ * Date._strptime('2001-02-03', '%Y-%m-%d')
+ * #=> {:year=>2001, :mon=>2, :mday=>3}
+ *
+ * See also strptime(3) and strftime.
+ */
+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=ITALY]]]) -> date
+ *
+ * Parses the given representation of date and time with the given
+ * template, and creates a date object.
+ *
+ * For example:
+ *
+ * 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 ...>
+ *
+ * See also strptime(3) and strftime.
+ */
+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("-4712-01-01");
+ 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 VALUE
+date_s__parse_internal(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vstr, vcomp, hash;
+
+ rb_scan_args(argc, argv, "11", &vstr, &vcomp);
+ StringValue(vstr);
+ 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);
+
+ {
+ VALUE zone = ref_hash("zone");
+
+ if (!NIL_P(zone)) {
+ rb_enc_copy(zone, vstr);
+ OBJ_INFECT(zone, vstr);
+ set_hash("zone", zone);
+ }
+ }
+
+ return hash;
+}
+
+/*
+ * call-seq:
+ * Date._parse(string[, comp=true]) -> hash
+ *
+ * Parses the given representation of date and time, and returns a
+ * hash of parsed elements.
+ *
+ * If the optional second argument is true and the detected year is in
+ * the range "00" to "99", considers the year a 2-digit form and makes
+ * it full.
+ *
+ * For example:
+ *
+ * Date._parse('2001-02-03') #=> {:year=>2001, :mon=>2, :mday=>3}
+ */
+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=ITALY]]) -> date
+ *
+ * Parses the given representation of date and time, and creates a
+ * date object.
+ *
+ * If the optional second argument is true and the detected year is in
+ * the range "00" to "99", considers the year a 2-digit form and makes
+ * it full.
+ *
+ * For example:
+ *
+ * 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 ...>
+ */
+static VALUE
+date_s_parse(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, comp, sg;
+
+ rb_scan_args(argc, argv, "03", &str, &comp, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01");
+ case 1:
+ comp = Qtrue;
+ case 2:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE argv2[2], hash;
+
+ argv2[0] = str;
+ argv2[1] = comp;
+ hash = date_s__parse(2, 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) -> hash
+ *
+ * Returns a hash of parsed elements.
+ */
+static VALUE
+date_s__iso8601(VALUE klass, VALUE str)
+{
+ return date__iso8601(str);
+}
+
+/*
+ * call-seq:
+ * Date.iso8601(string='-4712-01-01'[, start=ITALY]) -> date
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical ISO 8601 formats.
+ *
+ * For example:
+ *
+ * Date.iso8601('2001-02-03') #=> #<Date: 2001-02-03 ...>
+ * Date.iso8601('20010203') #=> #<Date: 2001-02-03 ...>
+ * Date.iso8601('2001-W05-6') #=> #<Date: 2001-02-03 ...>
+ */
+static VALUE
+date_s_iso8601(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__iso8601(klass, str);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._rfc3339(string) -> hash
+ *
+ * Returns a hash of parsed elements.
+ */
+static VALUE
+date_s__rfc3339(VALUE klass, VALUE str)
+{
+ return date__rfc3339(str);
+}
+
+/*
+ * call-seq:
+ * Date.rfc3339(string='-4712-01-01T00:00:00+00:00'[, start=ITALY]) -> date
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical RFC 3339 formats.
+ *
+ * For example:
+ *
+ * Date.rfc3339('2001-02-03T04:05:06+07:00') #=> #<Date: 2001-02-03 ...>
+ */
+static VALUE
+date_s_rfc3339(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01T00:00:00+00:00");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__rfc3339(klass, str);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._xmlschema(string) -> hash
+ *
+ * Returns a hash of parsed elements.
+ */
+static VALUE
+date_s__xmlschema(VALUE klass, VALUE str)
+{
+ return date__xmlschema(str);
+}
+
+/*
+ * call-seq:
+ * Date.xmlschema(string='-4712-01-01'[, start=ITALY]) -> date
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical XML Schema formats.
+ *
+ * For example:
+ *
+ * Date.xmlschema('2001-02-03') #=> #<Date: 2001-02-03 ...>
+ */
+static VALUE
+date_s_xmlschema(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__xmlschema(klass, str);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._rfc2822(string) -> hash
+ * Date._rfc822(string) -> hash
+ *
+ * Returns a hash of parsed elements.
+ */
+static VALUE
+date_s__rfc2822(VALUE klass, VALUE str)
+{
+ return date__rfc2822(str);
+}
+
+/*
+ * call-seq:
+ * Date.rfc2822(string='Mon, 1 Jan -4712 00:00:00 +0000'[, start=ITALY]) -> date
+ * Date.rfc822(string='Mon, 1 Jan -4712 00:00:00 +0000'[, start=ITALY]) -> date
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical RFC 2822 formats.
+ *
+ * For example:
+ *
+ * Date.rfc2822('Sat, 3 Feb 2001 00:00:00 +0000')
+ * #=> #<Date: 2001-02-03 ...>
+ */
+static VALUE
+date_s_rfc2822(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__rfc2822(klass, str);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._httpdate(string) -> hash
+ *
+ * Returns a hash of parsed elements.
+ */
+static VALUE
+date_s__httpdate(VALUE klass, VALUE str)
+{
+ return date__httpdate(str);
+}
+
+/*
+ * call-seq:
+ * Date.httpdate(string='Mon, 01 Jan -4712 00:00:00 GMT'[, start=ITALY]) -> date
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some RFC 2616 format.
+ *
+ * For example:
+ *
+ * Date.httpdate('Sat, 03 Feb 2001 00:00:00 GMT')
+ * #=> #<Date: 2001-02-03 ...>
+ *
+ */
+static VALUE
+date_s_httpdate(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("Mon, 01 Jan -4712 00:00:00 GMT");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__httpdate(klass, str);
+ return d_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * Date._jisx0301(string) -> hash
+ *
+ * Returns a hash of parsed elements.
+ */
+static VALUE
+date_s__jisx0301(VALUE klass, VALUE str)
+{
+ return date__jisx0301(str);
+}
+
+/*
+ * call-seq:
+ * Date.jisx0301(string='-4712-01-01'[, start=ITALY]) -> date
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical JIS X 0301 formats.
+ *
+ * For example:
+ *
+ * Date.jisx0301('H13.02.03') #=> #<Date: 2001-02-03 ...>
+ */
+static VALUE
+date_s_jisx0301(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__jisx0301(klass, str);
+ 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;
+ return new;
+ }
+ }
+ else {
+ VALUE new = d_lite_s_alloc_complex(rb_obj_class(self));
+ {
+ get_d1b(new);
+ bdat->c = adat->c;
+ 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(&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;
+ return new;
+ }
+ }
+}
+
+#define val2off(vof,iof) \
+{\
+ if (!offset_to_sec(vof, &iof)) {\
+ iof = 0;\
+ rb_warning("invalid offset is ignored");\
+ }\
+}
+
+#ifndef NDEBUG
+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_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(rb_eArgError, "invalid second fraction");
+ case 2:
+ df = NUM2INT(vdf);
+ if (df < 0 || df >= DAY_IN_SECONDS)
+ rb_raise(rb_eArgError, "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(&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(&dat->c, nth, rjd, df, sf, of, sg,
+ 0, 0, 0, 0, 0, 0, HAVE_JD | HAVE_DF | COMPLEX_DAT);
+ }
+ }
+ return self;
+}
+#endif
+
+/* :nodoc: */
+static VALUE
+d_lite_initialize_copy(VALUE copy, VALUE date)
+{
+ if (copy == date)
+ return copy;
+ {
+ get_d2(copy, date);
+ if (simple_dat_p(bdat)) {
+ adat->s = bdat->s;
+ adat->s.flags &= ~COMPLEX_DAT;
+ }
+ else {
+ if (!complex_dat_p(adat))
+ rb_raise(rb_eArgError,
+ "cannot load complex into simple");
+
+ adat->c = bdat->c;
+ adat->c.flags |= COMPLEX_DAT;
+ }
+ }
+ return copy;
+}
+
+#ifndef NDEBUG
+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.
+ *
+ * For example:
+ *
+ * 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.
+ *
+ * For example:
+ *
+ * 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.
+ *
+ * For example:
+ *
+ * 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.
+ *
+ * For example:
+ *
+ * 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:
+ * d.ld -> integer
+ *
+ * Returns the Lilian day number. This is a whole number, which is
+ * adjusted by the offset as the local time.
+ *
+ * For example:
+ *
+ * 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:
+ * d.year -> integer
+ *
+ * Returns the year.
+ *
+ * For example:
+ *
+ * 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:
+ * d.yday -> fixnum
+ *
+ * Returns the day of the year (1-366).
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).yday #=> 34
+ */
+static VALUE
+d_lite_yday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_yday(dat));
+}
+
+/*
+ * call-seq:
+ * d.mon -> fixnum
+ * d.month -> fixnum
+ *
+ * Returns the month (1-12).
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).mon #=> 2
+ */
+static VALUE
+d_lite_mon(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_mon(dat));
+}
+
+/*
+ * call-seq:
+ * d.mday -> fixnum
+ * d.day -> fixnum
+ *
+ * Returns the day of the month (1-31).
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).mday #=> 3
+ */
+static VALUE
+d_lite_mday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_mday(dat));
+}
+
+/*
+ * call-seq:
+ * d.day_fraction -> rational
+ *
+ * Returns the fractional part of the day.
+ *
+ * For example:
+ *
+ * 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:
+ * d.cwyear -> integer
+ *
+ * Returns the calendar week based year.
+ *
+ * For example:
+ *
+ * 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:
+ * d.cweek -> fixnum
+ *
+ * Returns the calendar week number (1-53).
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).cweek #=> 5
+ */
+static VALUE
+d_lite_cweek(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_cweek(dat));
+}
+
+/*
+ * call-seq:
+ * d.cwday -> fixnum
+ *
+ * Returns the day of calendar week (1-7, Monday is 1).
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).cwday #=> 6
+ */
+static VALUE
+d_lite_cwday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_cwday(dat));
+}
+
+#ifndef NDEBUG
+static VALUE
+d_lite_wnum0(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_wnum0(dat));
+}
+
+static VALUE
+d_lite_wnum1(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_wnum1(dat));
+}
+#endif
+
+/*
+ * call-seq:
+ * d.wday -> fixnum
+ *
+ * Returns the day of week (0-6, Sunday is zero).
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).wday #=> 6
+ */
+static VALUE
+d_lite_wday(VALUE self)
+{
+ get_d1(self);
+ return INT2FIX(m_wday(dat));
+}
+
+/*
+ * call-seq:
+ * d.sunday? -> bool
+ *
+ * Returns true if the date is Sunday.
+ */
+static VALUE
+d_lite_sunday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 0);
+}
+
+/*
+ * call-seq:
+ * d.monday? -> bool
+ *
+ * Returns true if the date is Monday.
+ */
+static VALUE
+d_lite_monday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 1);
+}
+
+/*
+ * call-seq:
+ * d.tuesday? -> bool
+ *
+ * Returns true if the date is Tuesday.
+ */
+static VALUE
+d_lite_tuesday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 2);
+}
+
+/*
+ * call-seq:
+ * d.wednesday? -> bool
+ *
+ * Returns true if the date is Wednesday.
+ */
+static VALUE
+d_lite_wednesday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 3);
+}
+
+/*
+ * call-seq:
+ * d.thursday? -> bool
+ *
+ * Returns true if the date is Thursday.
+ */
+static VALUE
+d_lite_thursday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 4);
+}
+
+/*
+ * call-seq:
+ * d.friday? -> bool
+ *
+ * Returns true if the date is Friday.
+ */
+static VALUE
+d_lite_friday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 5);
+}
+
+/*
+ * call-seq:
+ * d.saturday? -> bool
+ *
+ * Returns true if the date is Saturday.
+ */
+static VALUE
+d_lite_saturday_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_wday(dat) == 6);
+}
+
+#ifndef NDEBUG
+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:
+ * d.hour -> fixnum
+ *
+ * Returns the hour (0-23).
+ *
+ * For example:
+ *
+ * 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:
+ * d.min -> fixnum
+ * d.minute -> fixnum
+ *
+ * Returns the minute (0-59).
+ *
+ * For example:
+ *
+ * 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:
+ * d.sec -> fixnum
+ * d.second -> fixnum
+ *
+ * Returns the second (0-59).
+ *
+ * For example:
+ *
+ * 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:
+ * d.sec_fraction -> rational
+ * d.second_fraction -> rational
+ *
+ * Returns the fractional part of the second.
+ *
+ * For example:
+ *
+ * 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.
+ *
+ * For example:
+ *
+ * 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.
+ *
+ * For example:
+ *
+ * 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? -> bool
+ *
+ * Retruns true if the date is before the day of calendar reform.
+ *
+ * For example:
+ *
+ * Date.new(1582,10,15).julian? #=> false
+ * (Date.new(1582,10,15) - 1).julian? #=> true
+ */
+static VALUE
+d_lite_julian_p(VALUE self)
+{
+ get_d1(self);
+ return f_boolcast(m_julian_p(dat));
+}
+
+/*
+ * call-seq:
+ * d.gregorian? -> bool
+ *
+ * Retunrs true if the date is on or after the day of calendar reform.
+ *
+ * For example:
+ *
+ * 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:
+ * d.leap? -> bool
+ *
+ * Returns true if the year is a leap year.
+ *
+ * For example:
+ *
+ * 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:
+ * d.start -> float
+ *
+ * Returns the Julian day number denoting the day of calendar reform.
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).start #=> 2299161.0
+ * Date.new(2001,2,3,Date::GREGORIAN).start #=> -Infinity
+ */
+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 = (sg_cast)sg;
+ } else {
+ get_c_jd(x);
+ get_c_df(x);
+ clear_civil(x);
+ x->c.sg = (sg_cast)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:
+ * d.new_start([start=Date::ITALY]) -> date
+ *
+ * Duplicates self and resets its the day of calendar reform.
+ *
+ * For example:
+ *
+ * d = Date.new(1582,10,15)
+ * d.new_start(Date::JULIAN) #=> #<Date: 1582-10-05 ...>
+ */
+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:
+ * d.italy -> date
+ *
+ * This method is equivalent to new_start(Date::ITALY).
+ */
+static VALUE
+d_lite_italy(VALUE self)
+{
+ return dup_obj_with_new_start(self, ITALY);
+}
+
+/*
+ * call-seq:
+ * d.england -> date
+ *
+ * This method is equivalent to new_start(Date::ENGLAND).
+ */
+static VALUE
+d_lite_england(VALUE self)
+{
+ return dup_obj_with_new_start(self, ENGLAND);
+}
+
+/*
+ * call-seq:
+ * d.julian -> date
+ *
+ * This method is equivalent to new_start(Date::JULIAN).
+ */
+static VALUE
+d_lite_julian(VALUE self)
+{
+ return dup_obj_with_new_start(self, JULIAN);
+}
+
+/*
+ * call-seq:
+ * d.gregorian -> date
+ *
+ * This method is equivalent to new_start(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.
+ *
+ * For example:
+ *
+ * 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 flonum, assumes its
+ * precision is at most nanosecond.
+ *
+ * For example:
+ *
+ * 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)
+{
+ get_d1(self);
+
+ 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;
+
+ if (jd < 0) {
+ nth = f_sub(nth, INT2FIX(1));
+ jd += CM_PERIOD;
+ }
+ else if (jd >= CM_PERIOD) {
+ nth = f_add(nth, INT2FIX(1));
+ jd -= CM_PERIOD;
+ }
+ }
+
+ 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;
+ if (jd < 0) {
+ nth = f_sub(nth, INT2FIX(1));
+ jd += CM_PERIOD;
+ }
+ else if (jd >= CM_PERIOD) {
+ nth = f_add(nth, INT2FIX(1));
+ jd -= CM_PERIOD;
+ }
+ }
+
+ 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;
+ if (jd < 0) {
+ nth = f_sub(nth, INT2FIX(1));
+ jd += CM_PERIOD;
+ }
+ else if (jd >= CM_PERIOD) {
+ nth = f_add(nth, INT2FIX(1));
+ jd -= CM_PERIOD;
+ }
+ }
+
+ 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:
+ if (!k_numeric_p(other))
+ rb_raise(rb_eTypeError, "expected numeric");
+ other = f_to_r(other);
+#ifdef CANONICALIZATION_FOR_MATHN
+ if (!k_rational_p(other))
+ return d_lite_plus(self, other);
+#endif
+ /* fall through */
+ case T_RATIONAL:
+ {
+ VALUE nth, sf, t;
+ int jd, df, s;
+
+ if (wholenum_p(other))
+ return d_lite_plus(self, RRATIONAL(other)->num);
+
+ 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;
+ if (jd < 0) {
+ nth = f_sub(nth, INT2FIX(1));
+ jd += CM_PERIOD;
+ }
+ else if (jd >= CM_PERIOD) {
+ nth = f_add(nth, INT2FIX(1));
+ jd -= CM_PERIOD;
+ }
+ }
+
+ 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));
+
+ if (d < 0) {
+ n = f_sub(n, INT2FIX(1));
+ d += CM_PERIOD;
+ }
+ else if (d >= CM_PERIOD) {
+ n = f_add(n, INT2FIX(1));
+ d -= CM_PERIOD;
+ }
+
+ 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 (TYPE(r) == T_RATIONAL)
+ return r;
+ return rb_rational_new1(r);
+ }
+}
+
+/*
+ * call-seq:
+ * d - other -> date or rational
+ *
+ * Returns the difference between the two dates if the other is a date
+ * object. If the other is a numeric value, returns a date object
+ * pointing other days before self. If the other is flonum, assumes
+ * its precision is at most nanosecond.
+ *
+ * For example:
+ *
+ * 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:
+ if (!k_numeric_p(other))
+ rb_raise(rb_eTypeError, "expected numeric");
+ /* fall through */
+ case T_BIGNUM:
+ case T_RATIONAL:
+ return d_lite_plus(self, f_negate(other));
+ }
+}
+
+/*
+ * call-seq:
+ * d.next_day([n=1]) -> date
+ *
+ * This method is equivalent to d + 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:
+ * d.prev_day([n=1]) -> date
+ *
+ * This method is equivalent to d - 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 -> date
+ *
+ * Returns a date object denoting the following day.
+ */
+static VALUE
+d_lite_next(VALUE self)
+{
+ return d_lite_next_day(0, (VALUE *)NULL, self);
+}
+
+/*
+ * call-seq:
+ * d >> n -> date
+ *
+ * Returns a date object pointing n months after self. The n should
+ * be a numeric value.
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3) >> 1 #=> #<Date: 2001-03-03 ...>
+ * Date.new(2001,1,31) >> 1 #=> #<Date: 2001-02-28 ...>
+ * Date.new(2001,2,3) >> -2 #=> #<Date: 2000-12-03 ...>
+ */
+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(rb_eArgError, "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 date object pointing n months before self. The n should
+ * be a numeric value.
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3) << 1 #=> #<Date: 2001-01-03 ...>
+ * Date.new(2001,1,31) << 11 #=> #<Date: 2000-02-29 ...>
+ * Date.new(2001,2,3) << -1 #=> #<Date: 2001-03-03 ...>
+ */
+static VALUE
+d_lite_lshift(VALUE self, VALUE other)
+{
+ return d_lite_rshift(self, f_negate(other));
+}
+
+/*
+ * call-seq:
+ * d.next_month([n=1]) -> date
+ *
+ * This method is equivalent to d >> 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:
+ * d.prev_month([n=1]) -> date
+ *
+ * This method is equivalent to d << 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:
+ * d.next_year([n=1]) -> date
+ *
+ * This method is equivalent to d >> (n * 12)
+ */
+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:
+ * d.prev_year([n=1]) -> date
+ *
+ * This method is equivalent to d << (n * 12)
+ */
+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:
+ * d.step(limit[, step=1]) -> enumerator
+ * d.step(limit[, step=1]){|date| ...} -> self
+ *
+ * Iterates evaluation of the given block, which takes a date object.
+ * The limit should be a date object.
+ *
+ * For example:
+ *
+ * Date.new(2001).step(Date.new(2001,-1,-1)).select{|d| d.sunday?}.size
+ * #=> 52
+ */
+static VALUE
+d_lite_step(int argc, VALUE *argv, VALUE self)
+{
+ VALUE limit, step, date;
+
+ 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;
+ switch (FIX2INT(f_cmp(step, INT2FIX(0)))) {
+ case -1:
+ while (FIX2INT(d_lite_cmp(date, limit)) >= 0) {
+ rb_yield(date);
+ date = d_lite_plus(date, step);
+ }
+ break;
+ case 0:
+ while (1)
+ rb_yield(date);
+ break;
+ case 1:
+ while (FIX2INT(d_lite_cmp(date, limit)) <= 0) {
+ rb_yield(date);
+ date = d_lite_plus(date, step);
+ }
+ break;
+ default:
+ abort();
+ }
+ return self;
+}
+
+/*
+ * call-seq:
+ * d.upto(max) -> enumerator
+ * d.upto(max){|date| ...} -> self
+ *
+ * This method is equivalent to step(max, 1){|date| ...}.
+ */
+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:
+ * d.downto(min) -> enumerator
+ * d.downto(min){|date| ...} -> self
+ *
+ * This method is equivalent to step(min, -1){|date| ...}.
+ */
+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 f_cmp(m_ajd(dat), other);
+ else if (k_date_p(other))
+ return f_cmp(m_ajd(dat), f_ajd(other));
+ return rb_num_coerce_cmp(self, other, rb_intern("<=>"));
+}
+
+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;
+
+ 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:
+ * d <=> other -> -1, 0, +1 or nil
+ *
+ * Compares the two dates and returns -1, zero, 1 or nil. The other
+ * should be a date object or a numeric value as an astronomical
+ * Julian day number.
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3) <=> Date.new(2001,2,4) #=> -1
+ * Date.new(2001,2,3) <=> Date.new(2001,2,3) #=> 0
+ * Date.new(2001,2,3) <=> Date.new(2001,2,2) #=> 1
+ * Date.new(2001,2,3) <=> Object.new #=> nil
+ * Date.new(2001,2,3) <=> Rational(4903887,2)#=> 0
+ *
+ * See also Comparable.
+ */
+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);
+
+ if (have_jd_p(adat) &&
+ have_jd_p(bdat)) {
+ VALUE a_nth, b_nth;
+ int a_jd, b_jd;
+
+ 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 (a_nth < b_nth) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+ else {
+#ifndef USE_PACK
+ VALUE a_nth, b_nth;
+ int a_year, b_year,
+ a_mon, b_mon,
+ a_mday, b_mday;
+#else
+ VALUE a_nth, b_nth;
+ int a_year, b_year,
+ a_pd, b_pd;
+#endif
+
+ a_nth = m_nth(adat);
+ b_nth = m_nth(bdat);
+ if (f_eqeq_p(a_nth, b_nth)) {
+ a_year = m_year(adat);
+ b_year = m_year(bdat);
+ if (a_year == b_year) {
+#ifndef USE_PACK
+ a_mon = m_mon(adat);
+ b_mon = m_mon(bdat);
+ if (a_mon == b_mon) {
+ a_mday = m_mday(adat);
+ b_mday = m_mday(bdat);
+ if (a_mday == b_mday) {
+ return INT2FIX(0);
+ }
+ else if (a_mday < b_mday) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+ }
+ else if (a_mon < b_mon) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+#else
+ a_pd = m_pc(adat);
+ b_pd = m_pc(bdat);
+ if (a_pd == b_pd) {
+ return INT2FIX(0);
+ }
+ else if (a_pd < b_pd) {
+ return INT2FIX(-1);
+ }
+ else {
+ return INT2FIX(1);
+ }
+#endif
+ }
+ else if (a_year < b_year) {
+ 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, rb_intern("=="));
+}
+
+/*
+ * call-seq:
+ * d === other -> bool
+ *
+ * Returns true if they are the same day.
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3) === Date.new(2001,2,3)
+ * #=> true
+ * Date.new(2001,2,3) === Date.new(2001,2,4)
+ * #=> false
+ * DateTime.new(2001,2,3) === DateTime.new(2001,2,3,12)
+ * #=> true
+ * DateTime.new(2001,2,3) === DateTime.new(2001,2,3,0,0,0,'+24:00')
+ * #=> true
+ * DateTime.new(2001,2,3) === DateTime.new(2001,2,4,0,0,0,'+24:00')
+ * #=> false
+ */
+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);
+
+ if (have_jd_p(adat) &&
+ have_jd_p(bdat)) {
+ VALUE a_nth, b_nth;
+ int a_jd, b_jd;
+
+ 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;
+ }
+ else {
+#ifndef USE_PACK
+ VALUE a_nth, b_nth;
+ int a_year, b_year,
+ a_mon, b_mon,
+ a_mday, b_mday;
+#else
+ VALUE a_nth, b_nth;
+ int a_year, b_year,
+ a_pd, b_pd;
+#endif
+
+ a_nth = m_nth(adat);
+ b_nth = m_nth(bdat);
+ if (f_eqeq_p(a_nth, b_nth)) {
+ a_year = m_year(adat);
+ b_year = m_year(bdat);
+ if (a_year == b_year) {
+#ifndef USE_PACK
+ a_mon = m_mon(adat);
+ b_mon = m_mon(bdat);
+ if (a_mon == b_mon) {
+ a_mday = m_mday(adat);
+ b_mday = m_mday(bdat);
+ if (a_mday == b_mday)
+ return Qtrue;
+ }
+#else
+ /* mon and mday only */
+ a_pd = (m_pc(adat) >> MDAY_SHIFT);
+ b_pd = (m_pc(bdat) >> MDAY_SHIFT);
+ if (a_pd == b_pd) {
+ return Qtrue;
+ }
+#endif
+ }
+ }
+ 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[4];
+
+ get_d1(self);
+ h[0] = m_nth(dat);
+ h[1] = m_jd(dat);
+ h[2] = m_df(dat);
+ h[3] = m_sf(dat);
+ v = rb_memhash(h, sizeof(h));
+ return LONG2FIX(v);
+}
+
+#include "date_tmx.h"
+static void set_tmx(VALUE, struct tmx *);
+static VALUE strftimev(const char *, VALUE,
+ void (*)(VALUE, struct tmx *));
+
+/*
+ * call-seq:
+ * d.to_s -> string
+ *
+ * Returns a string in an ISO 8601 format (This method doesn't use the
+ * expanded representations).
+ *
+ * For example:
+ *
+ * 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
+static VALUE
+mk_inspect_flags(union DateData *x)
+{
+ return rb_enc_sprintf(rb_usascii_encoding(),
+ "%c%c%c%c%c",
+ (x->flags & COMPLEX_DAT) ? 'C' : 'S',
+ (x->flags & HAVE_JD) ? 'j' : '-',
+ (x->flags & HAVE_DF) ? 'd' : '-',
+ (x->flags & HAVE_CIVIL) ? 'c' : '-',
+ (x->flags & HAVE_TIME) ? 't' : '-');
+}
+
+static VALUE
+mk_inspect_raw(union DateData *x, const char *klass)
+{
+ if (simple_dat_p(x)) {
+ VALUE nth, flags;
+
+ RB_GC_GUARD(nth) = f_inspect(x->s.nth);
+ RB_GC_GUARD(flags) = mk_inspect_flags(x);
+
+ return rb_enc_sprintf(rb_usascii_encoding(),
+ "#<%s: "
+ "(%sth,%dj),+0s,%.0fj; "
+ "%dy%dm%dd; %s>",
+ klass ? klass : "?",
+ RSTRING_PTR(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
+ RSTRING_PTR(flags));
+ }
+ else {
+ VALUE nth, sf, flags;
+
+ RB_GC_GUARD(nth) = f_inspect(x->c.nth);
+ RB_GC_GUARD(sf) = f_inspect(x->c.sf);
+ RB_GC_GUARD(flags) = mk_inspect_flags(x);
+
+ return rb_enc_sprintf(rb_usascii_encoding(),
+ "#<%s: "
+ "(%sth,%dj,%ds,%sn),%+ds,%.0fj; "
+ "%dy%dm%dd %dh%dm%ds; %s>",
+ klass ? klass : "?",
+ RSTRING_PTR(nth), x->c.jd, x->c.df,
+ RSTRING_PTR(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
+ RSTRING_PTR(flags));
+ }
+}
+
+static VALUE
+d_lite_inspect_raw(VALUE self)
+{
+ get_d1(self);
+ return mk_inspect_raw(dat, rb_obj_classname(self));
+}
+#endif
+
+static VALUE
+mk_inspect(union DateData *x, const char *klass, const char *to_s)
+{
+ VALUE jd, sf;
+
+ RB_GC_GUARD(jd) = f_inspect(m_real_jd(x));
+ RB_GC_GUARD(sf) = f_inspect(m_sf(x));
+
+ return rb_enc_sprintf(rb_usascii_encoding(),
+ "#<%s: %s ((%sj,%ds,%sn),%+ds,%.0fj)>",
+ klass ? klass : "?",
+ to_s ? to_s : "?",
+ RSTRING_PTR(jd), m_df(x), RSTRING_PTR(sf),
+ m_of(x), m_sg(x));
+}
+
+/*
+ * call-seq:
+ * d.inspect -> string
+ *
+ * Returns the value as a string for inspection.
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).inspect
+ * #=> "#<Date: 2001-02-03 ((2451944j,0s,0n),+0s,2299161j)>"
+ * DateTime.new(2001,2,3,4,5,6,'-7').inspect
+ * #=> "#<DateTime: 2001-02-03T04:05:06-07:00 ((2451944j,39906s,0n),-25200s,2299161j)>"
+ *
+ */
+static VALUE
+d_lite_inspect(VALUE self)
+{
+ get_d1(self);
+ {
+ VALUE to_s;
+
+ RB_GC_GUARD(to_s) = f_to_s(self);
+ return mk_inspect(dat, rb_obj_classname(self), RSTRING_PTR(to_s));
+ }
+}
+
+#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 VALUE
+tmx_m_of(union DateData *x)
+{
+ return INT2FIX(m_of(x));
+}
+
+static char *
+tmx_m_zone(union DateData *x)
+{
+ return RSTRING_PTR(m_zone(x));
+}
+
+static 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,
+ (VALUE (*)(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);
+ OBJ_INFECT(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);
+ OBJ_INFECT(str, vfmt);
+ return str;
+}
+
+/*
+ * call-seq:
+ * d.strftime([format='%F']) -> string
+ *
+ * Formats date according to the directives in the given format
+ * string.
+ * The directives begins with a percent (%) character.
+ * Any text not listed as a directive will be passed through to the
+ * output string.
+ *
+ * The directive consists of a percent (%) character,
+ * zero or more flags, optional minimum field width,
+ * optional modifier and a conversion specifier
+ * as follows.
+ *
+ * %<flags><width><modifier><conversion>
+ *
+ * Flags:
+ * - don't pad a numerical output.
+ * _ use spaces for padding.
+ * 0 use zeros for padding.
+ * ^ upcase the result string.
+ * # change case.
+ * : use colons for %z.
+ *
+ * The minimum field width specifies the minimum width.
+ *
+ * The modifier is "E" and "O".
+ * They are ignored.
+ *
+ * Format directives:
+ *
+ * Date (Year, Month, Day):
+ * %Y - Year with century (can be negative, 4 digits at least)
+ * -0001, 0000, 1995, 2009, 14292, etc.
+ * %C - year / 100 (round down. 20 in 2009)
+ * %y - year % 100 (00..99)
+ *
+ * %m - Month of the year, zero-padded (01..12)
+ * %_m blank-padded ( 1..12)
+ * %-m no-padded (1..12)
+ * %B - The full month name (``January'')
+ * %^B uppercased (``JANUARY'')
+ * %b - The abbreviated month name (``Jan'')
+ * %^b uppercased (``JAN'')
+ * %h - Equivalent to %b
+ *
+ * %d - Day of the month, zero-padded (01..31)
+ * %-d no-padded (1..31)
+ * %e - Day of the month, blank-padded ( 1..31)
+ *
+ * %j - Day of the year (001..366)
+ *
+ * Time (Hour, Minute, Second, Subsecond):
+ * %H - Hour of the day, 24-hour clock, zero-padded (00..23)
+ * %k - Hour of the day, 24-hour clock, blank-padded ( 0..23)
+ * %I - Hour of the day, 12-hour clock, zero-padded (01..12)
+ * %l - Hour of the day, 12-hour clock, blank-padded ( 1..12)
+ * %P - Meridian indicator, lowercase (``am'' or ``pm'')
+ * %p - Meridian indicator, uppercase (``AM'' or ``PM'')
+ *
+ * %M - Minute of the hour (00..59)
+ *
+ * %S - Second of the minute (00..59)
+ *
+ * %L - Millisecond of the second (000..999)
+ * %N - Fractional seconds digits, default is 9 digits (nanosecond)
+ * %3N millisecond (3 digits)
+ * %6N microsecond (6 digits)
+ * %9N nanosecond (9 digits)
+ * %12N picosecond (12 digits)
+ *
+ * Time zone:
+ * %z - Time zone as hour and minute offset from UTC (e.g. +0900)
+ * %:z - hour and minute offset from UTC with a colon (e.g. +09:00)
+ * %::z - hour, minute and second offset from UTC (e.g. +09:00:00)
+ * %:::z - hour, minute and second offset from UTC
+ * (e.g. +09, +09:30, +09:30:30)
+ * %Z - Time zone abbreviation name
+ *
+ * Weekday:
+ * %A - The full weekday name (``Sunday'')
+ * %^A uppercased (``SUNDAY'')
+ * %a - The abbreviated name (``Sun'')
+ * %^a uppercased (``SUN'')
+ * %u - Day of the week (Monday is 1, 1..7)
+ * %w - Day of the week (Sunday is 0, 0..6)
+ *
+ * ISO 8601 week-based year and week number:
+ * The week 1 of YYYY starts with a Monday and includes YYYY-01-04.
+ * The days in the year before the first week are in the last week of
+ * the previous year.
+ * %G - The week-based year
+ * %g - The last 2 digits of the week-based year (00..99)
+ * %V - Week number of the week-based year (01..53)
+ *
+ * Week number:
+ * The week 1 of YYYY starts with a Sunday or Monday (according to %U
+ * or %W). The days in the year before the first week are in week 0.
+ * %U - Week number of the year. The week starts with Sunday. (00..53)
+ * %W - Week number of the year. The week starts with Monday. (00..53)
+ *
+ * Seconds since the Unix Epoch:
+ * %s - Number of seconds since 1970-01-01 00:00:00 UTC.
+ * %Q - Number of microseconds since 1970-01-01 00:00:00 UTC.
+ *
+ * Literal string:
+ * %n - Newline character (\n)
+ * %t - Tab character (\t)
+ * %% - Literal ``%'' character
+ *
+ * Combination:
+ * %c - date and time (%a %b %e %T %Y)
+ * %D - Date (%m/%d/%y)
+ * %F - The ISO 8601 date format (%Y-%m-%d)
+ * %v - VMS date (%e-%b-%Y)
+ * %x - Same as %D
+ * %X - Same as %T
+ * %r - 12-hour time (%I:%M:%S %p)
+ * %R - 24-hour time (%H:%M)
+ * %T - 24-hour time (%H:%M:%S)
+ * %+ - date(1) (%a %b %e %H:%M:%S %Z %Y)
+ *
+ * This method is similar to strftime() function defined in ISO C and POSIX.
+ * Several directives (%a, %A, %b, %B, %c, %p, %r, %x, %X, %E*, %O* and %Z)
+ * are locale dependent in the function.
+ * However this method is locale independent.
+ * So, the result may differ even if a same format string is used in other
+ * systems such as C.
+ * It is good practice to avoid %x and %X because there are corresponding
+ * locale independent representations, %D and %T.
+ *
+ * Examples:
+ *
+ * d = DateTime.new(2007,11,19,8,37,48,"-06:00")
+ * #=> #<DateTime: 2007-11-19T08:37:48-0600 ...>
+ * d.strftime("Printed on %m/%d/%Y") #=> "Printed on 11/19/2007"
+ * d.strftime("at %I:%M%p") #=> "at 08:37AM"
+ *
+ * Various ISO 8601 formats:
+ * %Y%m%d => 20071119 Calendar date (basic)
+ * %F => 2007-11-19 Calendar date (extended)
+ * %Y-%m => 2007-11 Calendar date, reduced accuracy, specific month
+ * %Y => 2007 Calendar date, reduced accuracy, specific year
+ * %C => 20 Calendar date, reduced accuracy, specific century
+ * %Y%j => 2007323 Ordinal date (basic)
+ * %Y-%j => 2007-323 Ordinal date (extended)
+ * %GW%V%u => 2007W471 Week date (basic)
+ * %G-W%V-%u => 2007-W47-1 Week date (extended)
+ * %GW%V => 2007W47 Week date, reduced accuracy, specific week (basic)
+ * %G-W%V => 2007-W47 Week date, reduced accuracy, specific week (extended)
+ * %H%M%S => 083748 Local time (basic)
+ * %T => 08:37:48 Local time (extended)
+ * %H%M => 0837 Local time, reduced accuracy, specific minute (basic)
+ * %H:%M => 08:37 Local time, reduced accuracy, specific minute (extended)
+ * %H => 08 Local time, reduced accuracy, specific hour
+ * %H%M%S,%L => 083748,000 Local time with decimal fraction, comma as decimal sign (basic)
+ * %T,%L => 08:37:48,000 Local time with decimal fraction, comma as decimal sign (extended)
+ * %H%M%S.%L => 083748.000 Local time with decimal fraction, full stop as decimal sign (basic)
+ * %T.%L => 08:37:48.000 Local time with decimal fraction, full stop as decimal sign (extended)
+ * %H%M%S%z => 083748-0600 Local time and the difference from UTC (basic)
+ * %T%:z => 08:37:48-06:00 Local time and the difference from UTC (extended)
+ * %Y%m%dT%H%M%S%z => 20071119T083748-0600 Date and time of day for calendar date (basic)
+ * %FT%T%:z => 2007-11-19T08:37:48-06:00 Date and time of day for calendar date (extended)
+ * %Y%jT%H%M%S%z => 2007323T083748-0600 Date and time of day for ordinal date (basic)
+ * %Y-%jT%T%:z => 2007-323T08:37:48-06:00 Date and time of day for ordinal date (extended)
+ * %GW%V%uT%H%M%S%z => 2007W471T083748-0600 Date and time of day for week date (basic)
+ * %G-W%V-%uT%T%:z => 2007-W47-1T08:37:48-06:00 Date and time of day for week date (extended)
+ * %Y%m%dT%H%M => 20071119T0837 Calendar date and local time (basic)
+ * %FT%R => 2007-11-19T08:37 Calendar date and local time (extended)
+ * %Y%jT%H%MZ => 2007323T0837Z Ordinal date and UTC of day (basic)
+ * %Y-%jT%RZ => 2007-323T08:37Z Ordinal date and UTC of day (extended)
+ * %GW%V%uT%H%M%z => 2007W471T0837-0600 Week date and local time and difference from UTC (basic)
+ * %G-W%V-%uT%R%:z => 2007-W47-1T08:37-06:00 Week date and local time and difference from UTC (extended)
+ *
+ * See also strftime(3) and strptime.
+ */
+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);
+ str = rb_usascii_str_new(buf, len);
+ if (buf != buffer) xfree(buf);
+ return str;
+}
+
+/*
+ * call-seq:
+ * d.asctime -> string
+ * d.ctime -> string
+ *
+ * Returns a string in asctime(3) format (but without "\n\0" at the
+ * end). This method is equivalent to strftime('%c').
+ *
+ * See also asctime(3) or ctime(3).
+ */
+static VALUE
+d_lite_asctime(VALUE self)
+{
+ return strftimev("%a %b %e %H:%M:%S %Y", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * d.iso8601 -> string
+ * d.xmlschema -> string
+ *
+ * This method is equivalent to strftime('%F').
+ */
+static VALUE
+d_lite_iso8601(VALUE self)
+{
+ return strftimev("%Y-%m-%d", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * d.rfc3339 -> string
+ *
+ * This method is equivalent to strftime('%FT%T%:z').
+ */
+static VALUE
+d_lite_rfc3339(VALUE self)
+{
+ return strftimev("%Y-%m-%dT%H:%M:%S%:z", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * d.rfc2822 -> string
+ * d.rfc822 -> string
+ *
+ * This method is equivalent to strftime('%a, %-d %b %Y %T %z').
+ */
+static VALUE
+d_lite_rfc2822(VALUE self)
+{
+ return strftimev("%a, %-d %b %Y %T %z", self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * d.httpdate -> string
+ *
+ * This method is equivalent to strftime('%a, %d %b %Y %T GMT').
+ * See also RFC 2616.
+ */
+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);
+}
+
+static VALUE
+jisx0301_date(VALUE jd, VALUE y)
+{
+ VALUE a[2];
+
+ if (f_lt_p(jd, INT2FIX(2405160)))
+ return rb_usascii_str_new2("%Y-%m-%d");
+ if (f_lt_p(jd, INT2FIX(2419614))) {
+ a[0] = rb_usascii_str_new2("M%02d" ".%%m.%%d");
+ a[1] = f_sub(y, INT2FIX(1867));
+ }
+ else if (f_lt_p(jd, INT2FIX(2424875))) {
+ a[0] = rb_usascii_str_new2("T%02d" ".%%m.%%d");
+ a[1] = f_sub(y, INT2FIX(1911));
+ }
+ else if (f_lt_p(jd, INT2FIX(2447535))) {
+ a[0] = rb_usascii_str_new2("S%02d" ".%%m.%%d");
+ a[1] = f_sub(y, INT2FIX(1925));
+ }
+ else {
+ a[0] = rb_usascii_str_new2("H%02d" ".%%m.%%d");
+ a[1] = f_sub(y, INT2FIX(1988));
+ }
+ return rb_f_sprintf(2, a);
+}
+
+/*
+ * call-seq:
+ * d.jisx0301 -> string
+ *
+ * Returns a string in a JIS X 0301 format.
+ *
+ * For example:
+ *
+ * Date.new(2001,2,3).jisx0301 #=> "H13.02.03"
+ */
+static VALUE
+d_lite_jisx0301(VALUE self)
+{
+ VALUE s;
+
+ get_d1(self);
+ s = jisx0301_date(m_real_local_jd(dat),
+ m_real_year(dat));
+ return strftimev(RSTRING_PTR(s), self, set_tmx);
+}
+
+#ifndef NDEBUG
+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)));
+
+ if (FL_TEST(self, FL_EXIVAR)) {
+ rb_copy_generic_ivar(a, self);
+ FL_SET(a, FL_EXIVAR);
+ }
+
+ 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)));
+
+ if (FL_TEST(self, FL_EXIVAR)) {
+ rb_copy_generic_ivar(a, self);
+ FL_SET(a, FL_EXIVAR);
+ }
+
+ return a;
+}
+
+/* :nodoc: */
+static VALUE
+d_lite_marshal_load(VALUE self, VALUE a)
+{
+ get_d1(self);
+
+ if (TYPE(a) != T_ARRAY)
+ rb_raise(rb_eTypeError, "expected an array");
+
+ switch (RARRAY_LEN(a)) {
+ case 3:
+ {
+ VALUE ajd, of, sg, nth, sf;
+ int jd, df, rof;
+ double rsg;
+
+ ajd = RARRAY_PTR(a)[0];
+ of = RARRAY_PTR(a)[1];
+ sg = RARRAY_PTR(a)[2];
+
+ old_to_new(ajd, of, sg,
+ &nth, &jd, &df, &sf, &rof, &rsg);
+
+ if (!df && f_zero_p(sf) && !rof) {
+ set_to_simple(&dat->s, nth, jd, rsg, 0, 0, 0, HAVE_JD);
+ } else {
+ if (!complex_dat_p(dat))
+ rb_raise(rb_eArgError,
+ "cannot load complex into simple");
+
+ set_to_complex(&dat->c, nth, jd, df, sf, rof, rsg,
+ 0, 0, 0, 0, 0, 0,
+ HAVE_JD | HAVE_DF | COMPLEX_DAT);
+ }
+ }
+ break;
+ case 6:
+ {
+ VALUE nth, sf;
+ int jd, df, of;
+ double sg;
+
+ nth = RARRAY_PTR(a)[0];
+ jd = NUM2INT(RARRAY_PTR(a)[1]);
+ df = NUM2INT(RARRAY_PTR(a)[2]);
+ sf = RARRAY_PTR(a)[3];
+ of = NUM2INT(RARRAY_PTR(a)[4]);
+ sg = NUM2DBL(RARRAY_PTR(a)[5]);
+ if (!df && f_zero_p(sf) && !of) {
+ set_to_simple(&dat->s, nth, jd, sg, 0, 0, 0, HAVE_JD);
+ } else {
+ if (!complex_dat_p(dat))
+ rb_raise(rb_eArgError,
+ "cannot load complex into simple");
+
+ set_to_complex(&dat->c, nth, jd, df, sf, of, sg,
+ 0, 0, 0, 0, 0, 0,
+ HAVE_JD | HAVE_DF | COMPLEX_DAT);
+ }
+ }
+ break;
+ default:
+ rb_raise(rb_eTypeError, "invalid size");
+ break;
+ }
+
+ if (FL_TEST(a, FL_EXIVAR)) {
+ rb_copy_generic_ivar(self, a);
+ FL_SET(self, FL_EXIVAR);
+ }
+
+ return self;
+}
+
+
+/* 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.
+ *
+ * For example:
+ *
+ * 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:
+ num2int_with_frac(s, positive_inf);
+ case 3:
+ num2int_with_frac(min, 3);
+ case 2:
+ num2int_with_frac(h, 2);
+ case 1:
+ 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(rb_eArgError, "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 date-time object denoting the given ordinal date.
+ *
+ * For example:
+ *
+ * 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:
+ num2int_with_frac(s, positive_inf);
+ case 4:
+ num2int_with_frac(min, 4);
+ case 3:
+ num2int_with_frac(h, 3);
+ case 2:
+ num2int_with_frac(d, 2);
+ case 1:
+ 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(rb_eArgError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(rb_eArgError, "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;
+}
+
+/*
+ * call-seq:
+ * DateTime.civil([year=-4712[, month=1[, mday=1[, hour=0[, minute=0[, second=0[, offset=0[, start=Date::ITALY]]]]]]]]) -> datetime
+ * DateTime.new([year=-4712[, month=1[, mday=1[, hour=0[, minute=0[, second=0[, offset=0[, start=Date::ITALY]]]]]]]]) -> datetime
+ *
+ * Creates a date-time object denoting the given calendar date.
+ *
+ * For example:
+ *
+ * DateTime.new(2001,2,3) #=> #<DateTime: 2001-02-03T00:00:00+00:00 ...>
+ * DateTime.new(2001,2,3,4,5,6,'+7')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ * DateTime.new(2001,-11,-26,-20,-55,-54,'+7')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ */
+static VALUE
+datetime_s_civil(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE vy, vm, vd, vh, vmin, vs, vof, vsg, y, fr, fr2, ret;
+ int m, d, h, min, s, rof;
+ double sg;
+
+ 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:
+ num2int_with_frac(s, positive_inf);
+ case 5:
+ num2int_with_frac(min, 5);
+ case 4:
+ num2int_with_frac(h, 4);
+ case 3:
+ num2int_with_frac(d, 3);
+ case 2:
+ m = NUM2INT(vm);
+ case 1:
+ 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(rb_eArgError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(rb_eArgError, "invalid date");
+ canon24oc();
+
+ ret = d_complex_new_internal(klass,
+ 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(rb_eArgError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(rb_eArgError, "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,
+ ry, rm, rd,
+ rh, rmin, rs,
+ HAVE_JD | HAVE_CIVIL | HAVE_TIME);
+ }
+ 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 date-time object denoting the given week date.
+ *
+ * For example:
+ *
+ * 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:
+ num2int_with_frac(s, positive_inf);
+ case 5:
+ num2int_with_frac(min, 5);
+ case 4:
+ num2int_with_frac(h, 4);
+ case 3:
+ num2int_with_frac(d, 3);
+ case 2:
+ w = NUM2INT(vw);
+ case 1:
+ 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(rb_eArgError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(rb_eArgError, "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
+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(rb_eArgError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(rb_eArgError, "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;
+}
+
+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(rb_eArgError, "invalid date");
+ if (!c_valid_time_p(h, min, s, &rh, &rmin, &rs))
+ rb_raise(rb_eArgError, "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 date-time object denoting the present time.
+ *
+ * For example:
+ *
+ * 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_VAR_TIMEZONE)
+#ifdef HAVE_VAR_ALTZONE
+ 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(rb_eArgError, "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_gt_p(ref_hash("sec"), INT2FIX(59)))
+ 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(rb_eArgError, "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(rb_eArgError, "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.
+ *
+ * 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=ITALY]]]) -> datetime
+ *
+ * Parses the given representation of date and time with the given
+ * template, and creates a date object.
+ *
+ * For example:
+ *
+ * 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("-4712-01-01T00:00:00+00:00");
+ 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=ITALY]]) -> datetime
+ *
+ * Parses the given representation of date and time, and creates a
+ * date object.
+ *
+ * If the optional second argument is true and the detected year is in
+ * the range "00" to "99", makes it full.
+ *
+ * For example:
+ *
+ * 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 ...>
+ */
+static VALUE
+datetime_s_parse(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, comp, sg;
+
+ rb_scan_args(argc, argv, "03", &str, &comp, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01T00:00:00+00:00");
+ case 1:
+ comp = Qtrue;
+ case 2:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE argv2[2], hash;
+
+ argv2[0] = str;
+ argv2[1] = comp;
+ hash = date_s__parse(2, argv2, klass);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.iso8601(string='-4712-01-01T00:00:00+00:00'[, start=ITALY]) -> datetime
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical ISO 8601 formats.
+ *
+ * For example:
+ *
+ * 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 ...>
+ */
+static VALUE
+datetime_s_iso8601(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01T00:00:00+00:00");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__iso8601(klass, str);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.rfc3339(string='-4712-01-01T00:00:00+00:00'[, start=ITALY]) -> datetime
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical RFC 3339 formats.
+ *
+ * For example:
+ *
+ * DateTime.rfc3339('2001-02-03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ */
+static VALUE
+datetime_s_rfc3339(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01T00:00:00+00:00");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__rfc3339(klass, str);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.xmlschema(string='-4712-01-01T00:00:00+00:00'[, start=ITALY]) -> datetime
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical XML Schema formats.
+ *
+ * For example:
+ *
+ * DateTime.xmlschema('2001-02-03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ */
+static VALUE
+datetime_s_xmlschema(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01T00:00:00+00:00");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__xmlschema(klass, str);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.rfc2822(string='Mon, 1 Jan -4712 00:00:00 +0000'[, start=ITALY]) -> datetime
+ * DateTime.rfc822(string='Mon, 1 Jan -4712 00:00:00 +0000'[, start=ITALY]) -> datetime
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical RFC 2822 formats.
+ *
+ * For example:
+ *
+ * DateTime.rfc2822('Sat, 3 Feb 2001 04:05:06 +0700')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ */
+static VALUE
+datetime_s_rfc2822(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__rfc2822(klass, str);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.httpdate(string='Mon, 01 Jan -4712 00:00:00 GMT'[, start=ITALY]) -> datetime
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some RFC 2616 format.
+ *
+ * For example:
+ *
+ * DateTime.httpdate('Sat, 03 Feb 2001 04:05:06 GMT')
+ * #=> #<DateTime: 2001-02-03T04:05:06+00:00 ...>
+ */
+static VALUE
+datetime_s_httpdate(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("Mon, 01 Jan -4712 00:00:00 GMT");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__httpdate(klass, str);
+ return dt_new_by_frags(klass, hash, sg);
+ }
+}
+
+/*
+ * call-seq:
+ * DateTime.jisx0301(string='-4712-01-01T00:00:00+00:00'[, start=ITALY]) -> datetime
+ *
+ * Creates a new Date object by parsing from a string according to
+ * some typical JIS X 0301 formats.
+ *
+ * For example:
+ *
+ * DateTime.jisx0301('H13.02.03T04:05:06+07:00')
+ * #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
+ */
+static VALUE
+datetime_s_jisx0301(int argc, VALUE *argv, VALUE klass)
+{
+ VALUE str, sg;
+
+ rb_scan_args(argc, argv, "02", &str, &sg);
+
+ switch (argc) {
+ case 0:
+ str = rb_str_new2("-4712-01-01T00:00:00+00:00");
+ case 1:
+ sg = INT2FIX(DEFAULT_SG);
+ }
+
+ {
+ VALUE hash = date_s__jisx0301(klass, str);
+ 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).
+ *
+ * For example:
+ *
+ * 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:
+ * dt.strftime([format='%FT%T%:z']) -> string
+ *
+ * Formats date according to the directives in the given format
+ * string.
+ * The directives begins with a percent (%) character.
+ * Any text not listed as a directive will be passed through to the
+ * output string.
+ *
+ * The directive consists of a percent (%) character,
+ * zero or more flags, optional minimum field width,
+ * optional modifier and a conversion specifier
+ * as follows.
+ *
+ * %<flags><width><modifier><conversion>
+ *
+ * Flags:
+ * - don't pad a numerical output.
+ * _ use spaces for padding.
+ * 0 use zeros for padding.
+ * ^ upcase the result string.
+ * # change case.
+ * : use colons for %z.
+ *
+ * The minimum field width specifies the minimum width.
+ *
+ * The modifier is "E" and "O".
+ * They are ignored.
+ *
+ * Format directives:
+ *
+ * Date (Year, Month, Day):
+ * %Y - Year with century (can be negative, 4 digits at least)
+ * -0001, 0000, 1995, 2009, 14292, etc.
+ * %C - year / 100 (round down. 20 in 2009)
+ * %y - year % 100 (00..99)
+ *
+ * %m - Month of the year, zero-padded (01..12)
+ * %_m blank-padded ( 1..12)
+ * %-m no-padded (1..12)
+ * %B - The full month name (``January'')
+ * %^B uppercased (``JANUARY'')
+ * %b - The abbreviated month name (``Jan'')
+ * %^b uppercased (``JAN'')
+ * %h - Equivalent to %b
+ *
+ * %d - Day of the month, zero-padded (01..31)
+ * %-d no-padded (1..31)
+ * %e - Day of the month, blank-padded ( 1..31)
+ *
+ * %j - Day of the year (001..366)
+ *
+ * Time (Hour, Minute, Second, Subsecond):
+ * %H - Hour of the day, 24-hour clock, zero-padded (00..23)
+ * %k - Hour of the day, 24-hour clock, blank-padded ( 0..23)
+ * %I - Hour of the day, 12-hour clock, zero-padded (01..12)
+ * %l - Hour of the day, 12-hour clock, blank-padded ( 1..12)
+ * %P - Meridian indicator, lowercase (``am'' or ``pm'')
+ * %p - Meridian indicator, uppercase (``AM'' or ``PM'')
+ *
+ * %M - Minute of the hour (00..59)
+ *
+ * %S - Second of the minute (00..59)
+ *
+ * %L - Millisecond of the second (000..999)
+ * %N - Fractional seconds digits, default is 9 digits (nanosecond)
+ * %3N millisecond (3 digits)
+ * %6N microsecond (6 digits)
+ * %9N nanosecond (9 digits)
+ * %12N picosecond (12 digits)
+ *
+ * Time zone:
+ * %z - Time zone as hour and minute offset from UTC (e.g. +0900)
+ * %:z - hour and minute offset from UTC with a colon (e.g. +09:00)
+ * %::z - hour, minute and second offset from UTC (e.g. +09:00:00)
+ * %:::z - hour, minute and second offset from UTC
+ * (e.g. +09, +09:30, +09:30:30)
+ * %Z - Time zone abbreviation name
+ *
+ * Weekday:
+ * %A - The full weekday name (``Sunday'')
+ * %^A uppercased (``SUNDAY'')
+ * %a - The abbreviated name (``Sun'')
+ * %^a uppercased (``SUN'')
+ * %u - Day of the week (Monday is 1, 1..7)
+ * %w - Day of the week (Sunday is 0, 0..6)
+ *
+ * ISO 8601 week-based year and week number:
+ * The week 1 of YYYY starts with a Monday and includes YYYY-01-04.
+ * The days in the year before the first week are in the last week of
+ * the previous year.
+ * %G - The week-based year
+ * %g - The last 2 digits of the week-based year (00..99)
+ * %V - Week number of the week-based year (01..53)
+ *
+ * Week number:
+ * The week 1 of YYYY starts with a Sunday or Monday (according to %U
+ * or %W). The days in the year before the first week are in week 0.
+ * %U - Week number of the year. The week starts with Sunday. (00..53)
+ * %W - Week number of the year. The week starts with Monday. (00..53)
+ *
+ * Seconds since the Unix Epoch:
+ * %s - Number of seconds since 1970-01-01 00:00:00 UTC.
+ * %Q - Number of microseconds since 1970-01-01 00:00:00 UTC.
+ *
+ * Literal string:
+ * %n - Newline character (\n)
+ * %t - Tab character (\t)
+ * %% - Literal ``%'' character
+ *
+ * Combination:
+ * %c - date and time (%a %b %e %T %Y)
+ * %D - Date (%m/%d/%y)
+ * %F - The ISO 8601 date format (%Y-%m-%d)
+ * %v - VMS date (%e-%b-%Y)
+ * %x - Same as %D
+ * %X - Same as %T
+ * %r - 12-hour time (%I:%M:%S %p)
+ * %R - 24-hour time (%H:%M)
+ * %T - 24-hour time (%H:%M:%S)
+ * %+ - date(1) (%a %b %e %H:%M:%S %Z %Y)
+ *
+ * This method is similar to strftime() function defined in ISO C and POSIX.
+ * Several directives (%a, %A, %b, %B, %c, %p, %r, %x, %X, %E*, %O* and %Z)
+ * are locale dependent in the function.
+ * However this method is locale independent.
+ * So, the result may differ even if a same format string is used in other
+ * systems such as C.
+ * It is good practice to avoid %x and %X because there are corresponding
+ * locale independent representations, %D and %T.
+ *
+ * Examples:
+ *
+ * d = DateTime.new(2007,11,19,8,37,48,"-06:00")
+ * #=> #<DateTime: 2007-11-19T08:37:48-0600 ...>
+ * d.strftime("Printed on %m/%d/%Y") #=> "Printed on 11/19/2007"
+ * d.strftime("at %I:%M%p") #=> "at 08:37AM"
+ *
+ * Various ISO 8601 formats:
+ * %Y%m%d => 20071119 Calendar date (basic)
+ * %F => 2007-11-19 Calendar date (extended)
+ * %Y-%m => 2007-11 Calendar date, reduced accuracy, specific month
+ * %Y => 2007 Calendar date, reduced accuracy, specific year
+ * %C => 20 Calendar date, reduced accuracy, specific century
+ * %Y%j => 2007323 Ordinal date (basic)
+ * %Y-%j => 2007-323 Ordinal date (extended)
+ * %GW%V%u => 2007W471 Week date (basic)
+ * %G-W%V-%u => 2007-W47-1 Week date (extended)
+ * %GW%V => 2007W47 Week date, reduced accuracy, specific week (basic)
+ * %G-W%V => 2007-W47 Week date, reduced accuracy, specific week (extended)
+ * %H%M%S => 083748 Local time (basic)
+ * %T => 08:37:48 Local time (extended)
+ * %H%M => 0837 Local time, reduced accuracy, specific minute (basic)
+ * %H:%M => 08:37 Local time, reduced accuracy, specific minute (extended)
+ * %H => 08 Local time, reduced accuracy, specific hour
+ * %H%M%S,%L => 083748,000 Local time with decimal fraction, comma as decimal sign (basic)
+ * %T,%L => 08:37:48,000 Local time with decimal fraction, comma as decimal sign (extended)
+ * %H%M%S.%L => 083748.000 Local time with decimal fraction, full stop as decimal sign (basic)
+ * %T.%L => 08:37:48.000 Local time with decimal fraction, full stop as decimal sign (extended)
+ * %H%M%S%z => 083748-0600 Local time and the difference from UTC (basic)
+ * %T%:z => 08:37:48-06:00 Local time and the difference from UTC (extended)
+ * %Y%m%dT%H%M%S%z => 20071119T083748-0600 Date and time of day for calendar date (basic)
+ * %FT%T%:z => 2007-11-19T08:37:48-06:00 Date and time of day for calendar date (extended)
+ * %Y%jT%H%M%S%z => 2007323T083748-0600 Date and time of day for ordinal date (basic)
+ * %Y-%jT%T%:z => 2007-323T08:37:48-06:00 Date and time of day for ordinal date (extended)
+ * %GW%V%uT%H%M%S%z => 2007W471T083748-0600 Date and time of day for week date (basic)
+ * %G-W%V-%uT%T%:z => 2007-W47-1T08:37:48-06:00 Date and time of day for week date (extended)
+ * %Y%m%dT%H%M => 20071119T0837 Calendar date and local time (basic)
+ * %FT%R => 2007-11-19T08:37 Calendar date and local time (extended)
+ * %Y%jT%H%MZ => 2007323T0837Z Ordinal date and UTC of day (basic)
+ * %Y-%jT%RZ => 2007-323T08:37Z Ordinal date and UTC of day (extended)
+ * %GW%V%uT%H%M%z => 2007W471T0837-0600 Week date and local time and difference from UTC (basic)
+ * %G-W%V-%uT%R%:z => 2007-W47-1T08:37-06:00 Week date and local time and difference from UTC (extended)
+ *
+ * See also strftime(3) and strptime.
+ */
+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, VALUE n)
+{
+ VALUE fmt;
+
+ fmt = rb_usascii_str_new2("T%H:%M:%S");
+ if (f_gt_p(n, INT2FIX(0))) {
+ VALUE argv[3];
+
+ get_d1(self);
+
+ argv[0] = rb_usascii_str_new2(".%0*d");
+ argv[1] = n;
+ argv[2] = f_round(f_quo(m_sf_in_sec(dat),
+ f_quo(INT2FIX(1),
+ f_expt(INT2FIX(10), n))));
+ rb_str_append(fmt, rb_f_sprintf(3, argv));
+ }
+ rb_str_append(fmt, rb_usascii_str_new2("%:z"));
+ return strftimev(RSTRING_PTR(fmt), self, set_tmx);
+}
+
+/*
+ * call-seq:
+ * dt.iso8601([n=0]) -> string
+ * dt.xmlschema([n=0]) -> string
+ *
+ * This method is equivalent to strftime('%FT%T'). The optional
+ * argument n is length of fractional seconds.
+ *
+ * For example:
+ *
+ * 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)
+{
+ VALUE n;
+
+ rb_scan_args(argc, argv, "01", &n);
+
+ if (argc < 1)
+ n = INT2FIX(0);
+
+ return f_add(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'). The optional
+ * argument n is length of fractional seconds.
+ *
+ * For example:
+ *
+ * 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 length of fractional seconds.
+ *
+ * For example:
+ *
+ * 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)
+{
+ VALUE n, s;
+
+ rb_scan_args(argc, argv, "01", &n);
+
+ if (argc < 1)
+ n = INT2FIX(0);
+
+ {
+ get_d1(self);
+ s = jisx0301_date(m_real_local_jd(dat),
+ m_real_year(dat));
+ return rb_str_append(strftimev(RSTRING_PTR(s), self, set_tmx),
+ iso8601_timediv(self, n));
+ }
+}
+
+/* conversions */
+
+#define f_getlocal(x) rb_funcall(x, rb_intern("getlocal"), 0)
+#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)
+#define f_utc6(x,y,m,d,h,min,s) rb_funcall(x, rb_intern("utc"), 6,\
+ y, m, d, h, min, s)
+
+/*
+ * call-seq:
+ * t.to_time -> time
+ *
+ * Returns a copy of self as local mode.
+ */
+static VALUE
+time_to_time(VALUE self)
+{
+ return rb_funcall(self, rb_intern("getlocal"), 0);
+}
+
+/*
+ * 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, DEFAULT_SG,
+ ry, m, d,
+ h, min, s,
+ HAVE_CIVIL | HAVE_TIME);
+ {
+ get_d1(ret);
+ set_sg(dat, DEFAULT_SG);
+ }
+ return ret;
+}
+
+/*
+ * call-seq:
+ * d.to_time -> time
+ *
+ * Returns a Time object which denotes self.
+ */
+static VALUE
+date_to_time(VALUE self)
+{
+ get_d1(self);
+
+ return f_local3(rb_cTime,
+ m_real_year(dat),
+ INT2FIX(m_mon(dat)),
+ INT2FIX(m_mday(dat)));
+}
+
+/*
+ * call-seq:
+ * d.to_date -> self
+ *
+ * Returns self;
+ */
+static VALUE
+date_to_date(VALUE self)
+{
+ return self;
+}
+
+/*
+ * call-seq:
+ * d.to_datetime -> datetime
+ *
+ * Returns a DateTime object which denotes self.
+ */
+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;
+ 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)
+{
+ volatile VALUE dup = dup_obj_with_new_offset(self, 0);
+ {
+ VALUE t;
+
+ get_d1(dup);
+
+ t = f_utc6(rb_cTime,
+ 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)));
+ return f_getlocal(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(&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
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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);
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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_obj_freeze(o);
+ return o;
+}
+
+void
+Init_date_core(void)
+{
+#undef rb_intern
+#define rb_intern(str) rb_intern_const(str)
+
+ assert(fprintf(stderr, "assert() is now active\n"));
+
+ id_cmp = rb_intern("<=>");
+ id_le_p = rb_intern("<=");
+ id_ge_p = rb_intern(">=");
+ id_eqeq_p = rb_intern("==");
+
+ half_days_in_day = rb_rational_new2(INT2FIX(1), INT2FIX(2));
+
+#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(half_days_in_day);
+ rb_gc_register_mark_object(day_in_nanoseconds);
+
+ positive_inf = +INFINITY;
+ negative_inf = -INFINITY;
+
+ /*
+ * date and datetime class - Tadayoshi Funaba 1998-2011
+ *
+ * 'date' provides two classes Date and DateTime.
+ *
+ * == Terms and definitions
+ *
+ * Some terms and definitions are based on ISO 8601 and JIS X 0301.
+ *
+ * === calendar date
+ *
+ * The calendar date is a particular day of a calendar year,
+ * identified by its ordinal number within a calendar month within
+ * that year.
+ *
+ * In those classes, this is so-called "civil".
+ *
+ * === ordinal date
+ *
+ * The ordinal date is a particular day of a calendar year identified
+ * by its ordinal number within the year.
+ *
+ * In those classes, this is so-called "ordinal".
+ *
+ * === week date
+ *
+ * The week date is a date identified by calendar week and day numbers.
+ *
+ * The calendar week is a seven day period within a calendar year,
+ * starting on a Monday and identified by its ordinal number within
+ * the year; the first calendar week of the year is the one that
+ * includes the first Thursday of that year. In the Gregorian
+ * calendar, this is equivalent to the week which includes January 4.
+ *
+ * In those classes, this so-called "commercial".
+ *
+ * === julian day number
+ *
+ * The Julian day number is in elapsed days since noon (Greenwich mean
+ * time) on January 1, 4713 BCE (in the Julian calendar).
+ *
+ * In this document, the astronomical Julian day number is same as the
+ * original Julian day number. And the chronological Julian day
+ * number is a variation of the Julian day number. Its days begin at
+ * midnight on local time.
+ *
+ * In this document, when the term "Julian day number" simply appears,
+ * it just refers to "chronological Julian day number", not the
+ * original.
+ *
+ * In those classes, those are so-called "ajd" and "jd".
+ *
+ * === modified julian day number
+ *
+ * The modified Julian day number is in elapsed days since midnight
+ * (Coordinated universal time) on November 17, 1858 CE (in the
+ * Gregorian calendar).
+ *
+ * In this document, the astronomical modified Julian day number is
+ * same as the original modified Julian day number. And the
+ * chronological modified Julian day number is a variation of the
+ * modified Julian day number. Its days begin at midnight on local
+ * time.
+ *
+ * In this document, when the term "modified Julian day number" simply
+ * appears, it just refers to "chronological modified Julian day
+ * number", not the original.
+ *
+ * In those classes, this is so-called "mjd".
+ *
+ *
+ * == Date
+ *
+ * A subclass of Object includes Comparable module, easily handles
+ * date.
+ *
+ * Date object is created with Date::new, Date::jd, Date::ordinal,
+ * Date::commercial, Date::parse, Date::strptime, Date::today,
+ * Time#to_date or etc.
+ *
+ * require 'date'
+ *
+ * Date.new(2001,2,3) #=> #<Date: 2001-02-03 ...>
+ * Date.jd(2451944) #=> #<Date: 2001-02-03 ...>
+ * Date.ordinal(2001,34) #=> #<Date: 2001-02-03 ...>
+ * Date.commercial(2001,5,6) #=> #<Date: 2001-02-03 ...>
+ * Date.parse('2001-02-03') #=> #<Date: 2001-02-03 ...>
+ * Date.strptime('03-02-2001', '%d-%m-%Y')
+ * #=> #<Date: 2001-02-03 ...>
+ * Time.new(2001,2,3).to_date #=> #<Date: 2001-02-03 ...>
+ *
+ * All date objects are immutable; hence cannot modify themselves.
+ *
+ * The concept of this date object can be represented as a tuple
+ * of the day count, the offset and the day of calendar reform.
+ *
+ * The day count denotes the absolute position of a temporal
+ * dimension. The offset is relative adjustment, which determines
+ * decoded local time with the day count. The day of calendar
+ * reform denotes the start day of the new style. The old style
+ * of the West is the Julian calendar which was adopted by
+ * Caersar. The new style is the Gregorian calendar, which is the
+ * current civil calendar of many countries.
+ *
+ * The day count is virtually the astronomical Julian day number.
+ * The offset in this class is usually zero, and cannot be
+ * specified directly.
+ *
+ * An optional argument the day of calendar reform (start) as a
+ * Julian day number, which should be 2298874 to 2426355 or -/+oo.
+ * The default value is Date::ITALY (2299161=1582-10-15). See
+ * also sample/cal.rb.
+ *
+ * $ ruby sample/cal.rb -c it 10 1582
+ * October 1582
+ * S M Tu W Th F S
+ * 1 2 3 4 15 16
+ * 17 18 19 20 21 22 23
+ * 24 25 26 27 28 29 30
+ * 31
+ *
+ * $ ruby sample/cal.rb -c gb 9 1752
+ * September 1752
+ * S M Tu W Th F S
+ * 1 2 14 15 16
+ * 17 18 19 20 21 22 23
+ * 24 25 26 27 28 29 30
+ *
+ * Date object has various methods. See each reference.
+ *
+ * d = Date.parse('3rd Feb 2001')
+ * #=> #<Date: 2001-02-03 ...>
+ * d.year #=> 2001
+ * d.mon #=> 2
+ * d.mday #=> 3
+ * d.wday #=> 6
+ * d += 1 #=> #<Date: 2001-02-04 ...>
+ * d.strftime('%a %d %b %Y') #=> "Sun 04 Feb 2001"
+ *
+ *
+ * == DateTime
+ *
+ * A subclass of Date easily handles date, hour, minute, second and
+ * offset.
+ *
+ * DateTime does not consider any leapseconds, does not track
+ * any summer time rules.
+ *
+ * DateTime object is created with DateTime::new, DateTime::jd,
+ * DateTime::ordinal, DateTime::commercial, DateTime::parse,
+ * DateTime::strptime, DateTime::now, Time#to_datetime or 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 senond can be
+ * 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, Rational(3,24)
+ * represents ahead of 3 hours of UTC, Rational(-5,24) 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: 2001-02-03T03:04:05+03:00 ...>
+ * also accepts string form.
+ *
+ * DateTime.new(2001,2,3,4,5,6,'+03:00')
+ * #=> #<DateTime: 2001-02-03T03:04:05+03:00 ...>
+ *
+ * An optional argument the day of calendar reform (start) denotes
+ * a Julian day number, which should be 2298874 to 2426355 or
+ * -/+oo. The default value is Date::ITALY (2299161=1582-10-15).
+ *
+ * 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
+ */
+ cDate = rb_define_class("Date", rb_cObject);
+
+ rb_include_module(cDate, rb_mComparable);
+
+ /* An array of stirng of full month name in English. The first
+ * element is nil.
+ */
+ rb_define_const(cDate, "MONTHNAMES", mk_ary_of_str(13, monthnames));
+
+ /* An array of string of abbreviated month name in English. The
+ * first element is nil.
+ */
+ rb_define_const(cDate, "ABBR_MONTHNAMES",
+ mk_ary_of_str(13, abbr_monthnames));
+
+ /* An array of string of full name 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 string of abbreviated day name 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);
+
+#ifndef NDEBUG
+#define de_define_private_method rb_define_private_method
+ de_define_private_method(CLASS_OF(cDate), "_valid_jd?",
+ date_s__valid_jd_p, -1);
+ de_define_private_method(CLASS_OF(cDate), "_valid_ordinal?",
+ date_s__valid_ordinal_p, -1);
+ de_define_private_method(CLASS_OF(cDate), "_valid_civil?",
+ date_s__valid_civil_p, -1);
+ de_define_private_method(CLASS_OF(cDate), "_valid_date?",
+ date_s__valid_civil_p, -1);
+ de_define_private_method(CLASS_OF(cDate), "_valid_commercial?",
+ date_s__valid_commercial_p, -1);
+ de_define_private_method(CLASS_OF(cDate), "_valid_weeknum?",
+ date_s__valid_weeknum_p, -1);
+ de_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
+ de_define_private_method(CLASS_OF(cDate), "valid_weeknum?",
+ date_s_valid_weeknum_p, -1);
+ de_define_private_method(CLASS_OF(cDate), "valid_nth_kday?",
+ date_s_valid_nth_kday_p, -1);
+ de_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
+#define de_define_singleton_method rb_define_singleton_method
+#define de_define_alias rb_define_alias
+ de_define_singleton_method(cDate, "new!", date_s_new_bang, -1);
+ de_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, "new", date_s_civil, -1);
+ rb_define_singleton_method(cDate, "commercial", date_s_commercial, -1);
+
+#ifndef NDEBUG
+ de_define_singleton_method(cDate, "weeknum", date_s_weeknum, -1);
+ de_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);
+
+#ifndef NDEBUG
+#define de_define_method rb_define_method
+ de_define_method(cDate, "initialize", d_lite_initialize, -1);
+#endif
+ rb_define_method(cDate, "initialize_copy", d_lite_initialize_copy, 1);
+
+#ifndef NDEBUG
+ de_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
+ de_define_private_method(cDate, "wnum0", d_lite_wnum0, 0);
+ de_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
+ de_define_method(cDate, "nth_kday?", d_lite_nth_kday_p, 2);
+#endif
+
+ rb_define_private_method(cDate, "hour", d_lite_hour, 0);
+ rb_define_private_method(cDate, "min", d_lite_min, 0);
+ rb_define_private_method(cDate, "minute", d_lite_min, 0);
+ rb_define_private_method(cDate, "sec", d_lite_sec, 0);
+ rb_define_private_method(cDate, "second", d_lite_sec, 0);
+ rb_define_private_method(cDate, "sec_fraction", d_lite_sec_fraction, 0);
+ rb_define_private_method(cDate, "second_fraction", d_lite_sec_fraction, 0);
+ rb_define_private_method(cDate, "offset", d_lite_offset, 0);
+ rb_define_private_method(cDate, "zone", d_lite_zone, 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_private_method(cDate, "new_offset", d_lite_new_offset, -1);
+
+ 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
+ de_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);
+
+#ifndef NDEBUG
+ de_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);
+
+ /* datetime */
+
+ cDateTime = rb_define_class("DateTime", cDate);
+
+ 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
+ de_define_singleton_method(cDateTime, "weeknum",
+ datetime_s_weeknum, -1);
+ de_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);
+
+#define f_public(m,s) rb_funcall(m, rb_intern("public"), 1,\
+ ID2SYM(rb_intern(s)))
+
+ f_public(cDateTime, "hour");
+ f_public(cDateTime, "min");
+ f_public(cDateTime, "minute");
+ f_public(cDateTime, "sec");
+ f_public(cDateTime, "second");
+ f_public(cDateTime, "sec_fraction");
+ f_public(cDateTime, "second_fraction");
+ f_public(cDateTime, "offset");
+ f_public(cDateTime, "zone");
+ f_public(cDateTime, "new_offset");
+
+ 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);
+
+ /* 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 */
+
+ de_define_singleton_method(cDate, "test_civil", date_s_test_civil, 0);
+ de_define_singleton_method(cDate, "test_ordinal", date_s_test_ordinal, 0);
+ de_define_singleton_method(cDate, "test_commercial",
+ date_s_test_commercial, 0);
+ de_define_singleton_method(cDate, "test_weeknum", date_s_test_weeknum, 0);
+ de_define_singleton_method(cDate, "test_nth_kday", date_s_test_nth_kday, 0);
+ de_define_singleton_method(cDate, "test_unit_conv",
+ date_s_test_unit_conv, 0);
+ de_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 2024-06-21 06:13:37 +0000