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2.1 Character Set
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The character repertoire
for the text of an Ada program consists of the entire coding space described
by the ISO/IEC 10646:2003 Universal Multiple-Octet Coded Character Set.
This coding space is organized in
planes, each plane comprising
65536 characters.
Syntax
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This paragraph was deleted.
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3.1/2
A character
is defined by this International Standard for each cell in the coding
space described by ISO/IEC 10646:2003, regardless of whether or not ISO/IEC
10646:2003 allocates a character to that cell.
Static Semantics
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The coded representation for characters is implementation
defined (it need not be a representation defined within ISO/IEC 10646:2003).
A character whose relative code position in its plane is 16#FFFE# or
16#FFFF# is not allowed anywhere in the text of a program.
4.1/2
The semantics of an Ada program whose text
is not in Normalization Form KC (as defined by section 24 of ISO/IEC
10646:2003) is implementation defined.
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The description of the language definition in
this International Standard uses the character properties General Category,
Simple Uppercase Mapping, Uppercase Mapping, and Special Case Condition
of the documents referenced by the note in section 1 of ISO/IEC 10646:2003.
The actual set of graphic symbols used by an implementation for the visual
representation of the text of an Ada program is not specified.
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Characters are
categorized as follows:
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- This paragraph was deleted.
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- letter_uppercase
-
Any character whose General Category is defined to be “Letter,
Uppercase”.
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- letter_lowercase
-
Any character whose General Category is defined to be “Letter,
Lowercase”.
9.1/2
- letter_titlecase
-
Any character whose General Category is defined to be “Letter,
Titlecase”.
9.2/2
- letter_modifier
-
Any character whose General Category is defined to be “Letter,
Modifier”.
9.3/2
- letter_other
-
Any character whose General Category is defined to be “Letter,
Other”.
9.4/2
- mark_non_spacing
-
Any character whose General Category is defined to be “Mark, Non-Spacing”.
9.5/2
- mark_spacing_combining
-
Any character whose General Category is defined to be “Mark, Spacing
Combining”.
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- number_decimal
-
Any character whose General Category is defined to be “Number,
Decimal”.
10.1/2
- number_letter
-
Any character whose General Category is defined to be “Number,
Letter”.
10.2/2
- punctuation_connector
-
Any character whose General Category is defined to be “Punctuation,
Connector”.
10.3/2
- other_format
-
Any character whose General Category is defined to be “Other, Format”.
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- separator_space
-
Any character whose General Category is defined to be “Separator,
Space”.
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- separator_line
-
Any character whose General Category is defined to be “Separator,
Line”.
12.1/2
- separator_paragraph
-
Any character whose General Category is defined to be “Separator,
Paragraph”.
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- format_effector
-
The characters whose code positions are 16#09# (CHARACTER TABULATION),
16#0A# (LINE FEED), 16#0B# (LINE TABULATION), 16#0C# (FORM FEED), 16#0D#
(CARRIAGE RETURN), 16#85# (NEXT LINE), and the characters in categories
separator_line and separator_paragraph.
13.1/2
- other_control
-
Any character whose General Category is defined to be “Other, Control”,
and which is not defined to be a format_effector.
13.2/2
- other_private_use
-
Any character whose General Category is defined to be “Other, Private
Use”.
13.3/2
- other_surrogate
-
Any character whose General Category is defined to be “Other, Surrogate”.
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- graphic_character
-
Any character that is not in the categories other_control,
other_private_use, other_surrogate,
format_effector, and whose relative
code position in its plane is neither 16#FFFE# nor 16#FFFF#.
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The following
names are used when referring to certain characters (the first name is
that given in ISO/IEC 10646:2003):
graphic symbol | name | graphic symbol | name |
|
| | | |
|
" | quotation mark | : | colon |
|
# | number sign | ; | semicolon |
|
& | ampersand | < | less-than sign |
|
' | apostrophe, tick | = | equals sign |
|
( | left parenthesis | > | greater-than sign |
|
) | right parenthesis | _ | low line, underline |
|
* | asterisk, multiply | | | vertical line |
|
+ | plus sign | / | solidus, divide |
|
, | comma | ! | exclamation point |
|
– | hyphen-minus, minus | % | percent sign |
|
. | full stop, dot, point | | |
|
Implementation Permissions
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This paragraph was deleted.
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1 The characters in categories
other_control, other_private_use,
and other_surrogate are only allowed
in comments.
18
2 The language does not
specify the source representation of programs.
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