Chapter 2: values, Literals, Integers – Teledyne LeCroy Merlins Wand - CSL manual (CATC Scripting Language Manual) User Manual

Page 9: Strings, 2 values, Integers strings, Hapter, Alues

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3

CATC Scripting Language for Bluetooth Analyzers

CATC

Manual Ver. 1.21

C

HAPTER

2: V

ALUES

There are five value types that may be manipulated by a script: integers, strings,
lists, raw bytes, and

null

. CSL is not a strongly typed language. Value types need

not be pre-declared. Literals, variables and constants can take on any of the five
value types, and the types can be reassigned dynamically.

Literals

Literals are data that remain unchanged when the program is compiled. Literals are
a way of expressing hard-coded data in a script.

Integers

Integer literals represent numeric values with no fractions or decimal points. Hexa-
decimal, octal, decimal, and binary notation are supported:

Hexadecimal numbers must be preceded by

0x: 0x2A, 0x54, 0xFFFFFF01

Octal numbers must begin with

0: 0775, 017, 0400

Decimal numbers are written as usual:

24, 1256, 2

Binary numbers are denoted with

0b: 0b01101100, 0b01, 0b100000

Strings

String literals are used to represent text. A string consists of zero or more characters
and can include numbers, letters, spaces, and punctuation. An empty string (

""

)

contains no characters and evaluates to false in an expression, whereas a non-empty
string evaluates to true. Double quotes surround a string, and some standard
backslash (

\

) escape sequences are supported.

String

Represented text

"Quote: \"This is a string

literal.\""

Quote: "This is a string

literal."

"256"

256

**Note that this does not represent the integer

256, but only the characters that make up the number.

"abcd!$%&*"

abcd!$%&*

"June 26, 2001"

June 26, 2001

"[ 1, 2, 3 ]"

[ 1, 2, 3 ]

Table 2.1: Examples of String Literals

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