2.2 Lexical Elements, Separators, and Delimiters
The text of a compilation
is divided into lines
general, the representation for an end of line is implementation defined.
However, a sequence of one or more format_effector
other than the character whose code position is 16#09# (CHARACTER TABULATION)
signifies at least one end of line.
some cases an explicit separator
is required to separate adjacent
lexical elements. A separator is any of a separator_space
, or the end of a line, as
- The character whose code position
is 16#09# (CHARACTER TABULATION) is a separator except within a comment.
- The end of a line is always a separator.
one of the following characters:
& ' ( ) * + , – . / : ; < = > |
or one of the following compound
each composed of two adjacent special characters
=> .. ** := /= >= <= << >> <>
The following names
are used when referring to compound delimiters:
|**||double star, exponentiate
|:=||assignment (pronounced: “becomes”)
|/=||inequality (pronounced: “not
|>=||greater than or equal
|<=||less than or equal
|<<||left label bracket
|>>||right label bracket
An implementation shall support lines of at least
200 characters in length, not counting any characters used to signify
the end of a line. An implementation shall support lexical elements of
at least 200 characters in length. The maximum supported line length
and lexical element length are implementation defined.