+++ /dev/null
-/*$Log: dateyacc.y,v $
-/*Revision 1.2 2002-09-28 06:58:45 arjen
-/*Bugfix: conversion of an empty string to a date or hour object
-/*now makes the values of such an object 0 (null) instead of giving
-/*a segmentation fault.
-/*The class UTC combines the date and hour classes. The most basic
-/*functions of the UTC class are now implemented.
-/*These include constructors and conversion to and from String objects.
-/*New functions: date::proper(), hour::proper() and UTC::proper().
-/*Return true if the object holds a proper clock time and/or calendar
-/*date; false if at least one value is out of range.
-/*
-/*Revision 1.1 2002/07/25 08:01:26 arjen
-/*First checkin, AXE release 0.2
-/*
- * Revision 1.1 84/09/01 15:01:22 wales
- * Initial revision
- *
- * Copyright (c) 1984 by Richard B. Wales
- *
- * Purpose:
- *
- * YACC parser for "parsedate" routine.
- *
- * Usage:
- *
- * Called as needed by the "parsedate" routine in "parsedate.c".
- * Not intended to be called from any other routine.
- *
- * Notes:
- *
- * Global contents:
- *
- * int yyparse ()
- * Parses the date string pointed to by the global variable
- * "yyinbuf". Sets the appropriate fields in the global data
- * structure "yyans". The returned value is 1 if there was a
- * syntax error, 0 if there was no error.
- *
- * Local contents:
- *
- * None.
- */
-
-/* ajs
- * ajs Code added on 850314 to allow goal := year.date '.' time
- * ajs and year.date := [CC]YYMMDD (YY > 23)
- * ajs All added lines contain "ajs" for easy searching.
- * ajs */
-
-%{
-#ifdef RCSIDENT
-static char rcsident[] = "$Header: /cvsroot/lib/AXE/src/dateyacc.y,v 1.2 2002-09-28 06:58:45 arjen Exp $";
-#endif /*RCSIDENT*/
-
-#include <stdio.h>
-#include "parsedate.h"
-struct parseddate yyans;
-
-/* No error routine is needed here. */
-#define yyerror(s)
-%}
-
-%union {
- int IntVal;
-}
-
-%token DAY_NAME
-%token MONTH_NAME
-%token NUM9 NUM23 NUM59 NUM99 NUM2359 NUM9999 NUM235959
-%token NUM991231 NUM99991231 /* ajs */
-%token AMPM
-%token STD_ZONE DST_ZONE DST_SUFFIX
-
-%type <IntVal> DAY_NAME
-%type <IntVal> MONTH_NAME
-%type <IntVal> NUM9 NUM23 NUM59 NUM99 NUM2359 NUM9999 NUM235959
-%type <IntVal> NUM991231 NUM99991231 /* ajs */
-%type <IntVal> AMPM
-%type <IntVal> STD_ZONE DST_ZONE
-%type <IntVal> num59 num zone.offset
-
-%start goal
-%%
-
-num59:
- NUM23
- | NUM59
- ;
-
-num:
- NUM9
- | num59
- ;
-
-goal:
- date
- | date dayname
- | date dayname time
- | date dayname time year
- | date dayname year
- | date dayname year time
- | date time
- | date time dayname
- | date time dayname year
- | date time year
- | date time year dayname
- | date.year
- | date.year dayname
- | date.year dayname time
- | date.year time
- | date.year time dayname
- | dayname date
- | dayname date time
- | dayname date time year
- | dayname date.year
- | dayname date.year time
- | dayname time date
- | dayname time date.year
- | dayname time year.date
- | dayname year.date
- | dayname year.date time
- | dayname year time date
- | time
- | time date
- | time date dayname
- | time date dayname year
- | time date.year
- | time date.year dayname
- | time dayname date
- | time dayname date.year
- | time dayname year.date
- | time year.date
- | time year.date dayname
- | time year dayname date
- | year.date
- | year.date dayname
- | year.date dayname time
- | year.date time
- | year.date time dayname
- | year dayname date
- | year dayname date time
- | year dayname time date
- | year time date
- | year time date dayname
- | year time dayname date
- | NUM2359
- { yyans.hour = $1 / 100;
- yyans.minute = $1 % 100;
- yyans.second = -1; /* unspecified */
- }
- | dayname
- | yymmdd '.' time2359 /* ajs */
- | yymmdd '.' time /* ajs */
- | yymmdd '.' time dayname /* ajs */
- | error
- { extern char *yyinbuf;
- if (yyans.error == NULL) yyans.error = yyinbuf;
- }
- ;
-
-dayname:
- DAY_NAME
- { yyans.c_weekday = $1; }
- | DAY_NAME '.'
- { yyans.c_weekday = $1; }
- ;
-
-date.year:
- date year
- | hyphen.date '-' year
- | num '-' num '-' year
- { yyans.day = $1; yyans.month = $3; }
- | slash.date '/' year
- ;
-
-year.date:
- year date
- | year '-' hyphen.date
- | year '-' num '-' num
- { yyans.day = $5; yyans.month = $3; }
- | year '/' slash.date
- | yymmdd /* ajs */
- ;
- /* ajs */
-yymmdd: /* ajs */
- NUM991231 /* ajs */
- { yyans.year = ($1 / 10000) + 1900; /* ajs */
- yyans.month = ($1 % 10000) / 100; /* ajs */
- yyans.day = ($1 % 100); /* ajs */
- } /* ajs */
-/*| NUM235959 (leads to parser conflict) */ /* ajs */
- | NUM99991231 /* ajs */
- { yyans.year = ($1 / 10000); /* ajs */
- yyans.month = ($1 % 10000) / 100; /* ajs */
- yyans.day = ($1 % 100); /* ajs */
- } /* ajs */
- ;
-
-date:
- num month.name
- { yyans.day = $1; }
- | month.name num
- { yyans.day = $2; }
- | num num
- { yyans.month = $1; yyans.day = $2; }
- ;
-
-hyphen.date:
- num '-' month.name
- { yyans.day = $1; }
- | month.name '-' num
- { yyans.day = $3; }
- ;
-
-slash.date:
- num '/' month.name
- { yyans.day = $1; }
- | month.name '/' num
- { yyans.day = $3; }
- | num '/' num
- { yyans.month = $1; yyans.day = $3; }
- ;
-
-year:
- NUM59 /* 2-digit year < 60 : after 2000 */
- { yyans.year = 2000 + $1; }
- | NUM23
- { yyans.year = 2000 + $1; }
- | NUM99 /* precludes two-digit date before 1960 */
- { yyans.year = 1900 + $1; }
- | NUM2359
- { yyans.year = $1; }
- | NUM9999
- { yyans.year = $1; }
- ;
-
-month.name:
- MONTH_NAME
- { yyans.month = $1; }
- | MONTH_NAME '.'
- { yyans.month = $1; }
- ;
-
-time:
- hour.alone
- | hour am.pm
- | hour zone
- | hour am.pm zone
- ;
-
-hour:
- NUM2359
- { yyans.hour = $1 / 100;
- yyans.minute = $1 % 100;
- yyans.second = -1; /* unspecified */
- }
- | hour.alone
- ;
-
-hour.alone:
- NUM9 ':' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = -1; /* unspecified */
- }
- | NUM9 '.' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = -1; /* unspecified */
- }
- | NUM9 ':' num59 ':' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = $5;
- }
- | NUM9 '.' num59 '.' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = $5;
- }
- | NUM23 ':' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = -1; /* unspecified */
- }
- | NUM23 '.' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = -1; /* unspecified */
- }
- | NUM23 ':' num59 ':' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = $5;
- }
- | NUM23 '.' num59 '.' num59
- { yyans.hour = $1;
- yyans.minute = $3;
- yyans.second = $5;
- }
- | NUM2359 ':' num59
- { yyans.hour = $1 / 100;
- yyans.minute = $1 % 100;
- yyans.second = $3;
- }
- | NUM2359 '.' num59
- { yyans.hour = $1 / 100;
- yyans.minute = $1 % 100;
- yyans.second = $3;
- }
- | NUM235959
- { yyans.hour = $1 / 10000;
- yyans.minute = ($1 % 10000) / 100;
- yyans.second = $1 % 100;
- }
- ;
-
-am.pm:
- AMPM
- { if (yyans.hour < 1 || yyans.hour > 12)
- yyans.hour = -1; /* invalid */
- else
- { if (yyans.hour == 12) yyans.hour = 0;
- yyans.hour += $1; /* 0 for AM, 12 for PM */
- } }
- ;
-
-zone:
- STD_ZONE
- { yyans.zone = $1; yyans.dst = 0; }
- | STD_ZONE DST_SUFFIX
- { yyans.zone = $1 + 60; yyans.dst = 1; }
- | '-' STD_ZONE
- { yyans.zone = $2; yyans.dst = 0; }
- | '-' STD_ZONE DST_SUFFIX
- { yyans.zone = $2 + 60; yyans.dst = 1; }
- | DST_ZONE
- { yyans.zone = $1; yyans.dst = 1; }
- | '-' DST_ZONE
- { yyans.zone = $2; yyans.dst = 1; }
- | '+' zone.offset
- { yyans.zone = $2; yyans.dst = 0; }
- | '-' '+' zone.offset
- { yyans.zone = $3; yyans.dst = 0; }
- | '-' zone.offset
- { yyans.zone = - $2; yyans.dst = 0; }
- | '-' '-' zone.offset
- { yyans.zone = - $3; yyans.dst = 0; }
- ;
-
-zone.offset:
- NUM9
- { $$ = 60 * $1; }
- | NUM9 ':' num59
- { $$ = 60 * $1 + $3; }
- | NUM9 '.' num59
- { $$ = 60 * $1 + $3; }
- | NUM23
- { $$ = 60 * $1; }
- | NUM23 ':' num59
- { $$ = 60 * $1 + $3; }
- | NUM23 '.' num59
- { $$ = 60 * $1 + $3; }
- | NUM2359
- { $$ = 60 * ($1 / 100) | ($1 % 100); }
- ;
-
-time2359: /* ajs */
- NUM2359 /* ajs */
- { yyans.hour = $1 / 100; /* ajs */
- yyans.minute = $1 % 100; /* ajs */
- yyans.second = -1; /* ajs */
- } /* ajs */
- ;
-
-%%
projects / AXE.git / blobdiff