mini-language: parsing error with a combination of functions and "this"

[oliver-sanders]

A niche interaction between:

• fail-if statements which use this
• functions such as any()
• the duplicate=true metadata configuration

Reproducible Example

This example:

# meta/rose-meta.conf

[namelist:a]                                                                                                 
duplicate=true                        
                         
[namelist:a=var]    
fail-if=any(this == "foo")
length=:   

# rose-app.conf

[namelist:a]                                                                                                 
var=foo     

Will fail validation:

$ rose macro -V
[V] rose.macros.DefaultValidators: issues: 2
    namelist:a=None=None
        incorrect "duplicate=true" metadata
    namelist:a=var=foo
        failed because: any(this == "foo")

Whereas this example:

# rose-app.conf

[namelist:a(1)]                                                                                                                    
var=foo 

Will not:

$ rose macro -V

Cause

From inspection it would appear the REC_CONFIG_ID regex is including the opening bracket in the varible name.

I.E. it is matching:

(namelist:a(1)=var(1)

Rather than:

namelist:a(1)=var(1)

Due to some, curious, logic, this error gets swallowed rather than resulting in traceback.

Workaround

Replace this with the full name of the config.

# meta/rose-meta.conf

[namelist:a]                                                                                                 
duplicate=true                        
                         
[namelist:a=var]    
fail-if=any(namelist:a=var == "foo")
length=: