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For VSC2 and MF only: Data Divisionin the DBCS Module
The JUSTIFIED Clause
General Rule.
The JUSTIFIED clause can be used with DBCS data items.
The PICTURE Clause
General Rules.
There are two additional categories of data that can be described with a
PICTURE clause: DBCS and DBCS edited. Both these categories must be
described as USAGE IS DISPLAY-1.
For MF only: These categories need not be described as USAGE
DISPLAY-1.
For COB/370 only: DISPLAY-1 is optional for PIC N, but not for PIC G
items.
Rules for DBCS Data
1. Its PICTURE character-string can contain only the symbol "G" or
"N" (MF and COB/370) .
2. Its contents can be any characters in the DBCS character set.
Rule for DBCS Edited Data
Its PICTURE character string can contain any combination of the symbols
"B" and "G".
Symbols Used.
The functions of these symbols are as follows:
B Each "B" represents a character position into which the DBCS
space character is inserted.
G Each "G" represents a character position which can contain only a
DBCS character or a DBCS space.,
N For MF and COB/370 only: Each "N" represents a character
position which can contain only a DBCS character or a DBCS space.
Note that each "G" or "B" or "N" (MF and COB/370) represents a single
double-byte character position.
Editing Rules
The type of editing that can be performed on an item depends on the
category to which the item belongs. Table 4-1 Function Names Support,
(see the chapter Program Definition in your Language Reference) is
extended with the following information:
Table 6-1: Editing Types for Data Categories
-------------------------------------------------------------------------------------------
| |
| Category Type of Editing |
| |
-------------------------------------------------------------------------------------------
| |
| DBCS None |
| |
| DBCS edited Simple insertion "B" only |
| |
-------------------------------------------------------------------------------------------
Fixed Insertion Editing
When used in an SBCS item, "B" (space) represents an SBCS space. When
used in a DBCS item it represents a DBCS space.
The REDEFINES Clause
Syntax Rule.
If either data-name-1 or data-name-2 is of class DBCS, then both must be
of class DBCS.
For MF only: This restriction is removed.
RENAMES Clause
Syntax Rule.
If either data-name-1 or data-name-2 is of class DBCS, then both must be
of class DBCS. No THROUGH clause is allowed.
The USAGE Clause
General Format.
The General Format is extended by the addition of the following:
![[]](../../pic3k/M015065/FFN503c50.gif)
Syntax Rules.
1. The PICTURE character-string can contain only "G"s and "B"s. An
item whose PICTURE character-string contains "G"s must have a
USAGE IS DISPLAY-1 clause.
Note that therefore the USAGE IS DISPLAY-1 clause makes an item's
class DBCS.
For MF and COB/370 only: USAGE IS DISPLAY-1 is not required for
items whose PICTURE clause contains "G"s (MF) or "N"s. Whenever a
PICTURE clause contains a "G" (MF) the associated item is
considered to be of class DBCS.
2. The BLANK WHEN ZERO clause cannot be used with group or elementary
items described as USAGE IS DISPLAY-1. The SYNCHRONIZED clause is
ignored.
3. The usage of a Screen Section data item may be implicitly or
explicitly defined as USAGE DISPLAY-1.
General Rule.
The USAGE IS DISPLAY-1 clause indicates that the format of the data is
DBCS.
The VALUE Clause
Syntax Rules.
1. In a data description entry, if the category of the item is DBCS,
the literal in the VALUE clause must be of category DBCS. A DBCS
literal is allowed only if the category of the item is DBCS or
DBCS edited.
2. A DBCS literal in the VALUE clause must not exceed the size given
by the PICTURE character-string.
CONDITION-NAME Rule
In a condition-name entry, if the associated data item is of category
DBCS, all literals in the VALUE clause must be of category DBCS. DBCS
literals are allowed only if the category of the associated data item is
DBCS.