Crate component_model_types

Module :: component_model_types

A flexible implementation of the Builder pattern supporting nested builders and collection-specific subcomponent_models. Its compile-time structures and traits that are not generated but reused.

Example: Using Trait Assign

Demonstrates setting various components (fields) of a struct.

The component_model_types crate provides a generic interface for setting components on an object. This example defines a Person struct and implements the Assign trait for its fields. It shows how to use these implementations to set the fields of a Person instance using different types that can be converted into the required types.

#[ cfg( any( not( feature = "types_component_assign" ), not( feature = "enabled" ) ) ) ]
fn main() {}

#[ cfg( all( feature = "types_component_assign", feature = "enabled" ) ) ]
fn main()
{
  use component_model_types::Assign;

  #[ derive( Default, PartialEq, Debug ) ]
  struct Person
  {
    age : i32,
    name : String,
  }

  impl< IntoT > Assign< i32, IntoT > for Person
  where
    IntoT : Into< i32 >,
  {
    fn assign( &mut self, component : IntoT )
    {
      self.age = component.into();
    }
  }

  impl< IntoT > Assign< String, IntoT > for Person
  where
    IntoT : Into< String >,
  {
    fn assign( &mut self, component : IntoT )
    {
      self.name = component.into();
    }
  }

  let mut got : Person = Default::default();
  got.assign( 13 );
  got.assign( "John" );
  assert_eq!( got, Person { age : 13, name : "John".to_string() } );
  dbg!( got );
  // > Person {
  // >   age: 13,
  // >   name: "John",
  // > }

}

Try out cargo run --example component_model_types_trivial.
See code.

Modules

dependency

Namespace with dependencies.

exposed

Exposed namespace of the module.

orphan

Parented namespace of the module.

own

Own namespace of the module.

prelude

Prelude to use essentials: use my_module::prelude::*.

Traits

Assign

Provides a generic interface for setting a component of a certain type on an object.

AssignWithType

The AssignWithType trait provides a mechanism to set a component on an object, utilizing the type information explicitly. This trait extends the functionality of Assign by allowing implementers to specify the component’s type at the method call site, enhancing expressiveness in code that manipulates object states.

OptionExt

Extension trait to provide a method for setting a component on an Option<Self> if the Option is currently None. If the Option is Some, the method will delegate to the Assign trait’s assign method.