Class: Weft::Resolver

Inherits:
Object
  • Object
show all
Defined in:
lib/weft/resolver.rb

Overview

Projects a wire params hash (string or symbol keys) onto a component class's declared schema, coercing values with declared types. Components self-resolve at build time (see DSL::Params); the Router also calls this directly for error-path bookkeeping. Future home of the reification step (wire primitives → rich objects).

Constant Summary collapse

TYPES =

The declarable wire types, each self-describing: how to coerce a present wire value (permissive Ruby — never raises on malformed input), and the classes a declared default may already be an instance of (declaration-side validation lives in DSL::Params). Self-description is the seam a future registration API extends.

{
  string: { coerce: :to_s.to_proc, classes: [String] },
  integer: { coerce: :to_i.to_proc, classes: [Integer] },
  float: { coerce: :to_f.to_proc, classes: [Float] },
  boolean: { coerce: ->(v) { [true, "true", "1"].include?(v) },
             classes: [TrueClass, FalseClass] },
  decimal: { coerce: :to_d.to_proc, classes: [BigDecimal] }
}.freeze

Class Method Summary collapse

Class Method Details

.resolve(component_class, params) ⇒ Object 



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# File 'lib/weft/resolver.rb', line 27

def resolve(component_class, params)
  component_class.params.each_with_object({}) do |(name, meta), result|
    raw = fetch_raw(params, name)
    result[name] = raw.nil? ? meta[:default] : coerce(raw, meta[:type])
  end
end

.resolve_present(component_class, params) ⇒ Object

Coerce only the keys actually present on the wire — no default fill. The construction-time source stack uses this to tell wire-satisfied keys apart from keys that fall through to lower sources.



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# File 'lib/weft/resolver.rb', line 37

def resolve_present(component_class, params)
  component_class.params.each_with_object({}) do |(name, meta), result|
    raw = fetch_raw(params, name)
    result[name] = coerce(raw, meta[:type]) unless raw.nil?
  end
end