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<h1>WAREKI.FS Data-Driven Refactor</h1>
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\ wareki.fs - Display WAREKI and Anno Domini corresponding years
\ +JMJ 2020 David Meyer <papa@sdf.org>
\ 2020/3/31 Add Reiwa era
\ help-wareki - Display module help
: help-wareki ( -- )
cr ." WAREKI" cr
." Display Japanese era years corresponding to A.D. years and" cr
." vice versa." cr
." HEISEI ( u -- ) Display A.D. year corresponding to Heisei era year." cr
." MEIJI ( u -- ) Display A.D. year corresponding to Meiji era year." cr
." NENGO ( u -- ) Display Japanese year in Meiji, Taishou, Shouwa," cr
." Heisei, or Reiwa eras corresponding to A.D. year." cr
." REIWA ( u -- ) Display A.D. year corresponding to Reiwa era year." cr
." SHOWA ( u -- ) Display A.D. year corresponding to Shouwa era year." cr
." TAISHO ( u -- ) Display A.D. year corresponding to Taishou era year." cr
;
\ nengo - Display NENGO for A.D. (Meiji, Taishou, Shouwa,
\ Heisei, Reiwa eras only)
: nengo ( u -- )
dup 1868 < if
." ERROR: Year precedes MEIJI era " drop
else
dup 1868 = if
." MEIJI GANNEN (Sep 8 -) " drop
else
dup 1912 < if
." MEIJI " 1867 - .
else
dup 1912 = if
." MEIJI 45/TAISHO GANNEN (Jul 30-) " drop
else
dup 1926 < if
." TAISHO " 1911 - .
else
dup 1926 = if
." TAISHO 15/SHOWA GANNEN (Dec 25-) " drop
else
dup 1989 < if
." SHOWA " 1925 - .
else
dup 1989 = if
." SHOWA 64/HEISEI GANNEN (Jan 8-) " drop
else
dup 2019 < if
." HEISEI " 1988 - .
else
dup 2019 = if
." HEISEI 31/REIWA GANNEN (May 1-) " drop
else
." REIWA " 2018 - .
then
then
then
then
then
then
then
then
then
then
;
\ meiji - Display A.D. for Meiji era NENGO.
: meiji ( u -- )
dup 0= if
." ERROR: NENGO < 1 " drop
else
dup 45 > if
." ERROR: NENGO > 45 " drop
else
." AD " 1867 + .
then
then
;
\ taisho - Display A.D. for Taishou era NENGO.
: taisho ( u -- )
dup 0= if
." ERROR: NENGO < 1 " drop
else
dup 15 > if
." ERROR: NENGO > 15 " drop
else
." AD " 1911 + .
then
then
;
\ showa - Display A.D. for Shouwa era NENGO.
: showa ( u -- )
dup 0= if
." ERROR: NENGO < 1 " drop
else
dup 64 > if
." ERROR: NENGO > 64 " drop
else
." AD " 1925 + .
then
then
;
\ heisei - Display A.D. for Heisei era NENGO.
: heisei ( u -- )
dup 0= if
." ERROR: NENGO < 1 " drop
else
." AD " 1988 + .
then
;
\ reiwa - Display A.D. for Reiwa era NENGO.
: reiwa ( u -- )
dup 0= if
." ERROR: NENGO < 1 " drop
else
." AD " 2018 + .
then
;
cr ." Type 'help-wareki' for help"
</pre></td>
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</pre></td>
<td style="vertical-align:top"><pre>
\ wareki.fs - Display WAREKI and Anno Domini corresponding years
\ +JMJ 2022 David Meyer <papa@sdf.org>
\ 2020/3/31 Add Reiwa era
\ 2022/2/9 Refactor and convert to data-driven
\ help-wareki - Display module help
: help-wareki ( -- )
cr ." WAREKI" cr
." Display Japanese era years corresponding to A.D. years and" cr
." vice versa." cr
." HEISEI ( u -- ) Display A.D. year corresponding to Heisei era year." cr
." MEIJI ( u -- ) Display A.D. year corresponding to Meiji era year." cr
." NENGO ( u -- ) Display Japanese year in Meiji, Taishou, Shouwa," cr
." Heisei, or Reiwa eras corresponding to A.D. year." cr
." REIWA ( u -- ) Display A.D. year corresponding to Reiwa era year." cr
." SHOWA ( u -- ) Display A.D. year corresponding to Shouwa era year." cr
." TAISHO ( u -- ) Display A.D. year corresponding to Taishou era year." cr
;
0 constant ERAM \ MEIJI era index
1 constant ERAT \ TAISHO era index
2 constant ERAS \ SHOWA era index
3 constant ERAH \ HEISEI era index
4 constant ERAR \ REIWA era index
create ERALFGY \ Era last full Gregorian year (M/T/S/H/R)
1867 , 1911 , 1925 , 1988 , 2018 ,
create ERALYR \ Era last year (M/T/S/H)
45 , 15 , 64 , 31 ,
create ERANAME \ Era name length/string (M/T/S/H/R)
5 , 77 c, 69 c, 73 c, 74 c, 73 c, 0 c, \ "MEIJI"
6 , 84 c, 65 c, 73 c, 83 c, 72 c, 79 c, \ "TAISHO"
5 , 83 c, 72 c, 79 c, 87 c, 65 c, 0 c, \ "SHOWA"
6 , 72 c, 69 c, 73 c, 83 c, 69 c, 73 c, \ "HEISEI"
5 , 82 c, 69 c, 73 c, 87 c, 65 c, 0 c, \ "REIWA"
create ERADATE \ Era start date length/string (M/T/S/H/R)
5 , 83 c, 101 c, 112 c, 32 c, 56 c, 0 c, \ "Sep 8"
6 , 74 c, 117 c, 108 c, 32 c, 51 c, 48 c, \ "Jul 30"
6 , 68 c, 101 c, 99 c, 32 c, 50 c, 53 c, \ "Dec 25"
5 , 74 c, 97 c, 110 c, 32 c, 56 c, 0 c, \ "Jan 8"
5 , 77 c, 97 c, 121 c, 32 c, 49 c, 0 c, \ "May 1"
: []@ ( uidx a-base -- a-addr ) swap cells + @ ;
: []$ ( uidx a-base -- c-addr ulen )
swap 1 cells 6 chars + * + dup 1 cells + swap @
;
: ng>gy ( ungy uera -- ugy ) ERALFGY []@ + ;
: gy>ng ( ugy -- ungy uera )
ERAR begin
dup ERALFGY []@ rot dup rot <= while swap 1-
repeat
over ERALFGY []@ - swap
;
: prera ( uera -- ) ERANAME []$ type space ;
: preradt ( uera -- ) ERADATE []$ type ;
: prgy ( ug -- ) ." AD " . ;
: ngyok? ( uera ungy -- f )
dup 0< if
2drop false else
swap ERALYR []@ 1+ > if false else true then
then
;
: nengo ( ugy -- )
dup ERAM ERALFGY []@ <= if
drop ." Year prior to MEIJI era unsupported " else
gy>ng over 1 = if
dup 1- dup prera ERALYR []@ . ." / "
dup prera ." GANNEN (" preradt ." -) " drop else
prera . then
then
;
: cvtng ( ungy uera -- )
2dup swap ngyok? if
ng>gy prgy else
2drop ." Invalid NENGO year " then
;
: meiji ( ungy -- ) ERAM cvtng ;
: taisho ( ungy -- ) ERAT cvtng ;
: showa ( ungy -- ) ERAS cvtng ;
: heisei ( ungy -- ) ERAH cvtng ;
: reiwa ( ungy -- ) ERAR cvtng ;
cr ." Type 'help-wareki' for help"
</pre></td>
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