Attempting to create overlapping URIs results in a parse error

[akumria]

Description

I am attempting to create three endpoints, one of which redirect to the other. sysl validate returns an error.

Steps to Reproduce

Initial example:

ReportAPI:
    /api/report:
        GET:
            ...

    /api/report/:
	| Redirects to /api/report
        return 301

    /api/report/{id <: int}:
        GET:
            ...

results in:

$ sysl validate -v restfulapi.sysl
DEBU[0000] Logging: {loglevel:debug verbose:true}
DEBU[0000] Attempting to load module:restfulapi.sysl (root:)
DEBU[0000] Parsing: restfulapi.sysl
line 6:16 mismatched input ':' expecting {CURLY_OPEN, DIGITS, TEXT_LINE, Name, E_Name}
INFO[0000] SyntaxError: Token: COLON
line 7:1 mismatched input '|' expecting INDENT
INFO[0000] SyntaxError: Token: PIPE
line 10:4 extraneous input '/' expecting {<EOF>, SYSL_COMMENT, TEXT_LINE, Name, E_Name}
INFO[0000] SyntaxError: Token: FORWARD_SLASH
line 10:8 mismatched input '/' expecting COLON
INFO[0000] SyntaxError: Token: FORWARD_SLASH
line 10:15 mismatched input '/' expecting COLON
INFO[0000] SyntaxError: Token: FORWARD_SLASH
line 10:19 mismatched input ' <: ' expecting COLON
INFO[0000] SyntaxError: Token: LESS_COLON
WARN[0000] restfulapi.sysl has syntax errors

A minmal example:

ReportAPI:
    /api/report:
        GET:
            ...

    /api/report/:
        GET:
            ...

    /api/report/{id <: int}:
        GET:
            ...

$ sysl validate -v restfulapi.sysl
DEBU[0000] Logging: {loglevel:debug verbose:true}
DEBU[0000] Attempting to load module:restfulapi.sysl (root:)
DEBU[0000] Parsing: restfulapi.sysl
line 6:16 mismatched input ':' expecting {CURLY_OPEN, DIGITS, TEXT_LINE, Name, E_Name}
INFO[0000] SyntaxError: Token: COLON
WARN[0000] restfulapi.sysl has syntax errors

Expected behavior

I would like to use sysl to model systems as they are, rather than have to only specify "ideal" systems.

Actual behavior

validation error(s) occur.

Your Environment

$ sysl info
Build:
  Version      : v0.438.0
  Git Commit   : 3550ba28c3dfd16c874be629b8f1f0f3a82a15cf
  Date         : 2021-08-23T00:12:23Z
  Go Version   : go1.16.7 linux/amd64
  OS           : darwin/amd64