Mixin enhancements (include within if-else clause, +foreach fix, +inlude fix for passing more parameters)

jade-to-laravel-blade-mixins.jade

//- As you may know, Laravel 5 provides the Elixir to compile assets with no pain.
  These mixins is for those of you who want to use Jade power combined with that of Laravel Blade.
  The syntax mimic Blade statements, however identation differs in some cases.
- var newline = "\r\n"
- var loopIterator = '$iterator'
//- @extends mixin
  Example:  +extends('layouts/master')
  Compiled: @extends('layouts/master')
mixin extends(file)
    | @extends('#{file}')
    =newline + newline
//- @include mixin
//-
  Example:  +include('partials/nav-menu')
  Compiled: @include('partials/nav-menu')
  !! Now notice the single quotes that frame the value !!
  Example:  +include('partials/nav-menu', {'items': '$items'})
  Compiled: @include('partials/nav-menu', ['items' => $items])
  !! Here notice the double quotes that frame the string !!
  Example:  +include('partials/person', {'name': "'John Doe'"}
  Compiled: @include('partials/person', ['name' => 'John Doe'])
mixin include(file, data)
    - var stmt = "@include('" + file + "'";
    if data
        - var result = '['
        for val, key in data
            - result += "'"+ key + "' => " + val + ","
        - result += ']'
        - stmt += ", " + result
    !=stmt + ")"
    =newline + newline
//- @section mixin
//-
  Example:
  +section('content')
  Compiled:
    @section('content')
    @stop
  Example:
    +section('sidebar', true)
  Compiled:
    @section('sidebar')
    @overwrite
mixin section(name, overwrite)
    | @section('#{name}')
    =newline
    block
    if overwrite
        ="@overwrite"
    else
        ="@stop"
    =newline + newline
//- @yield mixin
//-
  Example:  +yield('content')
  Compiled: @yield('content', '')
  Example:  +yield('content', "'Default content'")
  Compiled: @yield('content', 'Default content')
mixin yield(section, defaultContent)
    | @yield('#{section}', '#{defaultContent}')
    =newline
//- common mixin for a @begin-@end like statements
mixin statement(stmt, condition)
    =newline
    | @#{stmt}(!{condition})
    block
    =newline
    | @end#{stmt}
    =newline
//- @if statement mixin
//-
  Example:
  +if('$number > 999')
    .number The Big Number
  Compiled:
  @if($number > 999)
  <div class="number">The Big Number</div>
  @endif
mixin if(condition)
    +statement('if', condition)
        =newline
        block
//- @unless statement mixin
//-
  Example:
  +unless('$number > 999')
    .number The Small Number
  Compiled:
  @unless($number > 999)
  <div class="number">The Small Number</div>
  @endunless
mixin unless(condition)
    +statement('unless', condition)
        block
//-@else statement mixin
//-
  Example:
  .number
    +if('$number > 999')
      | The Big Number
      +else
        | The Small Number
  Compiled:
  <div class="number">
  @if($number > 999)
  The Big Number
  @else
  The Small Number
  @endif
  </div>
mixin else()
    =newline + '@else'
    =newline
    block
//- @elseif statement mixin
//- see if and else please
mixin elseif(condition)
    =newline
    | @elseif(!{condition})
    block
//- @for statement mixin
//-
  Example:
  .pages
    +for('$i = 0; $i < count($pages); $i++')
      .page {{ $pages[$i]->title }}
  Compiled:
  <div class="pages">
  @for($i = 0; $i < count($pages); $i++)
  <div class="page">{{ $pages[$i]->title }}
  @endfor
  </div>
mixin for(condition)
    +statement('for', condition)
        block
//- @while statement mixin
//-
  Example:
  +while(true)
    .message Aaaaarggghhh!
  Compiled:
  @while(true)
  <div class="message">Aaaaarggghhh!</div>
  @endwhile
mixin while(condition)
    +statement('while', condition)
        block
//- @foreach statement mixin
//-
  Example:
  +foreach('$pages', '$page', '$pid', '$pnum')
    .page {{ $page->title }}
  Compiled:
  <?php $pnum = 0; ?>
  @foreach($pages as $pid => $page)
  <div class="page">{{ $page->title }}</div>
  <?php $pnum++; ?>
  @endforeach
  <?php unset($pnum); ?>
mixin foreach(items, item, index, iterator, stmt)
    - var stmt = stmt || 'foreach'
    - var index = index || '$idx'
    - var iterator = iterator || loopIterator
    =newline
    | <?php #{iterator} = 0; ?>
    =newline
    | @#{stmt}(#{items} as #{index} => #{item})
    if isForelse
        block
    else
        block
        //=newline
        | <?php #{iterator} ++; ?>
    =newline
    | @end#{stmt}
    =newline
    | <?php unset(#{iterator}); ?>
    =newline + newline
//- @forelse statement mixin
//-
  Example:
  +forelse('$pages', '$page')
    .page {{ $page->title }}
    +empty
      p Sorry, nothing was found.
  Compiled:
  <?php $iterator = 0; ?>
  @forelse($pages as $idx => $page)
  <div class="page">{{ $page->title }}</div>
  <?php $iterator++; ?>
  @empty
  <p>Sorry, nothing was found.</p>
  @endforelse
  <?php unset($iterator); ?>
mixin forelse(items, item, index, iterator)
    - var iterator = iterator || loopIterator
    +foreach(items, item, index, iterator, 'forelse')
        block
//- @empty statement mixin
mixin empty(iterator)
    - var iterator = iterator || loopIterator
    =newline
    | <?php #{iterator}++; ?>
    =newline + '@empty' + newline
    block
    =newline
//- @break statement mixin
//- !! Laravel Blade does not have this statement by default !!
mixin break()
    =newline + '@break;' + newline
//- @lang mixin
//-
  Example:  +lang('language.line')
  Compiled: @lang('language.line')
mixin lang(line)
    | @lang('#{line}')
//- @choice mixin
//-
  Example:  +choice('language.line', 1)
  Compiled: @choice('language.line', 1)
mixin choice(line, choice)
    | @choice('#{line}', #{choice})