$Log_Coercer_Code => bool (default: from ENV or 0)

If set to true, will log the generated coercer code (currently using Log::ger at trace level). To see the log message, e.g. to the screen, you can use something like:

 % TRACE=1 perl -MLog::ger::LevelFromEnv -MLog::ger::Output=Screen \
     -MData::Sah::CoerceJS=gen_coercer -E'my $c = gen_coercer(...)'

gen_coercer

Usage:

 gen_coercer(%args) -> any

Generate coercer code.

This is mostly for testing. Normally the coercion rules will be used from Data::Sah.

This function is not exported by default, but exportable.

Arguments ('*' denotes required arguments):

• coerce_rules => array[str]

  A specification of coercion rules to use (or avoid).

  This setting is used to specify which coercion rules to use (or avoid) in a flexible way. Each element is a string, in the form of either "NAME" to mean specifically include a rule, or "!NAME" to exclude a rule.

  Some coercion modules are used by default, unless explicitly avoided using the '!NAME' rule.

  To not use any rules:

  To use the default rules plus R1 and R2:

   ['R1', 'R2']
      

  To use the default rules but not R1 and R2:

   ['!R1', '!R2']
      

• coerce_to => str

  Some Sah types, like "date", can be represented in a choice of types in the target language. For example, in Perl you can store it as a floating number a.k.a. float(epoch), or as a DateTime object, or Time::Moment object. Storing in DateTime can be convenient for date manipulation but requires an overhead of loading the module and storing in a bulky format. The choice is yours to make, via this setting.

• engine => str (default: "quickjs")

  (No description)

• return_type => str (default: "val")

  "val" means the coercer will return the input (possibly) coerced or undef if coercion fails.

  "bool_coerced+val" means the coercer will return a 2-element array. The first element is a bool value set to 1 if coercion has been performed or 0 if otherwise. The second element is the (possibly) coerced input.

  "bool_coerced+str_errmsg+val" means the coercer will return a 3-element array. The first element is a bool value set to 1 if coercion has been performed or 0 if otherwise. The second element is the error message string which will be set if there is a failure in coercion (or undef if coercion is successful). The third element is the (possibly) coerced input.

• source => bool

  If set to true, will return coercer source code string instead of compiled code.

• type* => sah::type_name

  (No description)

Return value: (any)

LOG_SAH_COERCER_CODE => bool

Set default for $Log_Coercer_Code.