The Definitive ANTLR 4 Reference, 2nd Edition

Loading CSV Data

Our goal is to build a listener that loads comma-separated-value (CSV) data into a nice “list of maps” data structure. This is the kind of thing that any data format reader or even a configuration file reader would do. We’ll collect the fields of each row into a map that associates a header name with a value. So, given the following input:

listeners/t.csv

Details,Month,Amount
Mid Bonus,June,"$2,000"
,January,"""zippo"""
Total Bonuses,"","$5,000"

we’d like to see the following list of maps printed out:

[{Details=Mid Bonus, Month=June, Amount="$2,000"},
 {Details=, Month=January, Amount="""zippo"""},
 {Details=Total Bonuses, Month="", Amount="$5,000"}]

To get precise methods within our listener, ...