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Series 2600 System SourceMeters Reference Manual TSP Programming Fundamentals 2-53

Return to Section 2 topics 2600S-901-01 Rev. A / May 2006

Test Script Language (TSL) reference

Introduction

A script is a program that the Test Script Processor (TSP) executes. A script is

written using the Test Script Language (TSL). TSL is an efficient language, with

simple syntax and extensible semantics. TSL is derived from the Lua

programming language, Copyright

www.lua.org, the official web site for the Lua Programming Language, for more

information. Also, http://lua-users.org internet site is created for and by users of

Lua programming language and is another source of useful information.

Reserved words

and function return

elseif nil until

for repeat else

local true false

then do in

break if or

end not while

Variables and types

TSL has six basic types; nil, boolean, number, string, function, and table. TSL is a

dynamically typed language, which means variables do not need to be declared

as a specific type. Instead, variables assume a type when a value is assigned to

them. Therefore, each

value carries its own type. If a variable has not been

assigned a value, the variable defaults to the type nil. All numbers are real

numbers. There is no distinction between integers and floating-point numbers in

TSL.

var = nil -- var is nil.

var = 1.0 -- var is now a number.

var = 0.3E-12 -- var is still a number.

var = 7 -- var is still a number.

var = "Hello world!" -- var is now a string.

var = "I said, Hello world!" -- var is still a string.

var = function(a, b) return(a+b) end -- var is now a function

that adds two numbers.

var = {1, 2., 3.00e0} -- var is now a table (i.e.,

array) with three

initialized members.

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