ModelSim SE User's Manual - Electrical and Computer Engineering

Using the Expression Builder for expression searches
Searching in the Wave and List windows UM-253
The Expression Builder is a feature of the Wave and List Signal Search dialog boxes, and
the List trigger properties dialog box. It aids in building a search expression that follows
the "GUI_expression_format" (CR-22).
To locate the Builder:
select Edit > Search (List or Wave window)
select the Search for Expression option in the resulting dialog box
select the Builder button
The Expression Builder dialog box provides an array of buttons that help you build a GUI
expression. For instance, rather than typing in a signal name, you can select the signal in
the associated Wave or List window and press Insert Selected Signal. All Expression
Builder buttons correspond to the "Expression syntax" (CR-23).
Saving an expression to a Tcl variable
Clicking the Save button will save the expression to a Tcl variable. Once saved this variable
can be used in place of the expression. For example, say you save an expression to the
variable "foo". Here are some operations you could do with the saved variable:
Read the value of foo with the set command:
set foo
Put $foo in the Expression: entry box for the Search for Expression selection.
Issue a searchlog command using foo:
searchlog -expr $foo 0
ModelSim SE User’s Manual