Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.3)
// Compass (v1.0.0.alpha.18)
// Sassy Maps (v0.3.2)
// ----

@import "sassy-maps";

$__namespaces: ();

@mixin create-namespace($name) {
  $__namespaces: map-set($__namespaces, $name, ());
}

@function namespace-set($name, $args...) {
  $length: length($args);
  $namespace: map-get($__namespaces, $name);
  
  @if length($args) == 1 {
    @if type-of(nth($args, 1)) == map {
      $namespace: map-merge($namespace, nth($args, 1));
    } @else {
      @warn "Must pass either a map or 2 or more values."
    }
  }
  @else {
    $keys: nth($args, 1);
    
    @if length($keys) == 1 {
      $namespace: map-set($namespace, $args...);
    } @else {
      $namespace: map-set-deep($namespace, $args...);
    }
  }
  
  $__namespaces: map-merge($__namespaces, ($name: $namespace));
  @return $namespace;
}

@function namespace-get($name, $args...) {
  $length: length($args);
  $namespace: map-get($__namespaces, $name);
  
  @if $length > 0 {
    $keys: nth($args, 1);
    
    @if length($keys) == 1 {
      @return map-get($namespace, $args...);
    } @else {
      @return map-get-deep($namespace, $args...);
    }
  } @else {
    @return $namespace;
  }
}

@mixin namespace-set($name, $args...) {
  $namespace: namespace-set($name, $args...);
}

///

@include create-namespace(color);

@function color($key) {
  @return namespace-get(color, $key);
}

output {
  @include namespace-set(color, primary, red);
  foo: namespace-get(color, primary);
  bar: color(primary);
}

SassMeister-output.css

output {
  foo: red;
  bar: red;
}