How can I pass command line arguments to antlr?

[BrentRector]

For example, my *.g4 file contains UTF-8 characters. Therefore I need to invoke antlr with the -encoding command line option such as:

antlr4 -encoding utf8 grammar.g4

I suspect the vscode extension doesn't pass that command line option as copile-on-save produces errors in VSCode but not when running antlr from the command line. However, I cannot find a configuration setting for the encoding command line option.

Similarly, I need to pass the encoding option when invoking grun as well.

[mike-lischke]

No, currently it's not possible to specify command line parameters. This can be added as an addition to the launch task.

[kenjiuno]

Hi.

Can I pass 2 or more parameters to additionalParameters?

I want to pass -encoding UTF8.

In .vscode/settings.json

{
    "antlr4.generation": {
        "additionalParameters": "-encoding UTF8",
        "mode": "internal",
        "language": "Java",
        "listeners": true,
        "visitors": false
    }
}

However output from generator is:

error(2):  unknown command-line option -encoding UTF8

I have looked up b0f7ebd.

vscode-antlr4/src/backend/SourceContext.ts

Lines 1075 to 1077 in 62e3614

	if (options.additionalParameters) {
	parameters.push(options.additionalParameters);
	}

options.additionalParameters isn't separated.

Perhaps passing -encoding UTF8 will give "-encoding UTF8" in command line args.

%JAVA_HOME%\bin\java -jar H:\DL\antlr-4.10.1-complete.jar "-encoding utf8" Zengin.g4
error(2):  unknown command-line option -encoding utf8

The above error message matches.

I want to pass separated parameters like this:

%JAVA_HOME%\bin\java -jar H:\DL\antlr-4.10.1-complete.jar -encoding utf8 Zengin.g4