added cron constructs like @weekly (#1255)

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@7012 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/grammar/crontab.g

@@ -20,6 +20,34 @@ throws ANTLRException
     table.bits[3]=mnth;
     table.dayOfWeek=(int)dow;
   }
+  | "@yearly"
+  {
+    table.set("0 0 1 1 *");
+  }
+  | "@annually"
+  {
+    table.set("0 0 1 1 *");
+  }
+  | "@monthly"
+  {
+    table.set("0 0 1 * *");
+  }
+  | "@weekly"
+  {
+    table.set("0 0 * * 0");
+  }
+  | "@daily"
+  {
+    table.set("0 0 * * *");
+  }
+  | "@midnight"
+  {
+    table.set("0 0 * * *");
+  }
+  | "@hourly"
+  {
+    table.set("0 * * * *");
+  }
   ;
 
 expr [int field]

core/src/main/java/hudson/scheduler/CronTab.java

@@ -28,6 +28,10 @@ public final class CronTab {
     }
 
     public CronTab(String format, int line) throws ANTLRException {
+        set(format, line);
+    }
+
+    private void set(String format, int line) throws ANTLRException {
         CrontabLexer lexer = new CrontabLexer(new StringReader(format));
         lexer.setLine(line);
         CrontabParser parser = new CrontabParser(lexer);
@@ -56,6 +60,10 @@ public final class CronTab {
         return true;
     }
 
+    void set(String format) throws ANTLRException {
+        set(format,1);
+    }
+
     /**
      * Returns true if n-th bit is on.
      */