Error trying to convert a string

[AntonioEspadas]

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  [ ] question about how to use this project

• Summary
  Hi, thank you for your great work!

I'm having some problems trying to convert a message from Universal_Robots_ROS_Driver, not sure if they should change their syntax or there is new use case you may need to consider.

ProgramState.msg

string STOPPED=STOPPED
string PLAYING=PLAYING
string PAUSED=PAUSED

string state

https://github.com/UniversalRobots/Universal_Robots_ROS_Driver/blob/master/ur_dashboard_msgs/msg/ProgramState.msg

• Other information (e.g. detailed explanation, stack traces, related issues, suggestions how to fix, links for us to have context, eg. StackOverflow, personal fork, etc.)

Error: Syntax error at line 1 col 16:

  string STOPPED=STOPPED
                 ^
Unexpected fieldOrType token: "STOPPED". Instead, I was expecting to see one of the following:

A space token based on:
    _$subexpression$1 →  ● %space
    _ →  ● _$subexpression$1
    main → _ stringType __ constantField _ assignment ● _ stringConstantValue _ main$ebnf$11
A doubleQuotedString token based on:
    doubleQuotedString →  ● %doubleQuotedString
    stringConstantValue$subexpression$1 →  ● doubleQuotedString
    stringConstantValue →  ● stringConstantValue$subexpression$1
    main → _ stringType __ constantField _ assignment _ ● stringConstantValue _ main$ebnf$11
A singleQuotedString token based on:
    singleQuotedString →  ● %singleQuotedString
    stringConstantValue$subexpression$1 →  ● singleQuotedString
    stringConstantValue →  ● stringConstantValue$subexpression$1
    main → _ stringType __ constantField _ assignment _ ● stringConstantValue _ main$ebnf$11

ERROR: 1