Teledyne LeCroy UWBTrainer Exerciser Script Language - Manual (Page 79)

LeCroy Corporation UWBTrainer Exerciser - Generation Script Language Reference Manual
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10 Advanced Script Parser Features
The script parser has some advanced features that simplify creation of complicated generation
scenarios. Such features include:
• Using local and global integer variables
• Using local and global structure variables
• Using special data pattern creators in field assignments
• Using multipliers with struct variables in field assignments
• Using = + in field assignments
• Initializing struct variables from hex streams
• Supporting arithmetic operations with parser variables
• Supporting concatenation operations for structure variables
• Using
parser sizeof operators
• Using
parser while, for, and if-else operators
• Calling generation procedures with parameters
• Allowing users to trace/debug the parser and follow variable and template construction
• Supporting name aliasing for constants, settings, data patterns, templates, variables,
instructions and named instruction parameters.
• Using include paths to specify additional folders in which to look for included files
10.1 Local Numeric Parser Variables
You can declare a local numeric parser variable, which is seen only inside the generation
procedure, and use it in field assignments.
Format
[ Local ] var = expression
Note: The Local keyword is required if you already have a global variable with the same name.
Using this keyword explicitly instructs the script parser to declare a local variable with the same
name.
Example
y = 10 # Declare a global numeric variable with name 'y'.
Main
{
x = 0xAABB # Declare a local variable 'x'.
Local y = 20 # Explicitly declare a local variable 'y'
Send TX_FRAME
{
DestAddr = x # Use the previously assigned variable 'x'
SrcAddr = y + 10 # Use the previously assigned variable 'x' + 10
SeqCtrl = z # Create a new variable 'z' with value 0.
}
}