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State management

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Decouple state from final rendering
Restore initial state after parsing
This commit is contained in:
Aidan Woods 2019-01-21 18:45:12 +00:00
parent c9388cb5c2
commit 083ad582c7
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GPG Key ID: 9A6A8EFAA512BBB9
1 changed files with 15 additions and 21 deletions
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36
src/Parsedown.php
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@ -31,6 +31,7 @@ use Erusev\Parsedown\Components\Inlines\Strikethrough;
use Erusev\Parsedown\Components\Inlines\Url; use Erusev\Parsedown\Components\Inlines\Url;
use Erusev\Parsedown\Components\Inlines\UrlTag; use Erusev\Parsedown\Components\Inlines\UrlTag;
use Erusev\Parsedown\Components\StateUpdatingBlock; use Erusev\Parsedown\Components\StateUpdatingBlock;
use Erusev\Parsedown\Html\Renderable;
use Erusev\Parsedown\Html\Renderables\Invisible; use Erusev\Parsedown\Html\Renderables\Invisible;
use Erusev\Parsedown\Html\Renderables\Text; use Erusev\Parsedown\Html\Renderables\Text;
use Erusev\Parsedown\Parsing\Context; use Erusev\Parsedown\Parsing\Context;
@ -60,25 +61,20 @@ final class Parsedown
*/ */
public function text($text) public function text($text)
{ {
$StateRenderables = $this->textElements($text); $InitialState = $this->State;
# convert to markup $StateRenderables = $this->lines(Lines::fromTextLines($text, 0));
$markup = $this->elements($this->State, $StateRenderables);
$Renderables = $this->State->applyTo($StateRenderables);
$this->State = $InitialState;
$html = self::render($Renderables);
# trim line breaks # trim line breaks
$markup = \trim($markup, "\n"); $html = \trim($html, "\n");
return $markup; return $html;
}
/**
* @param string $text
* @return StateRenderable[]
*/
protected function textElements($text)
{
# iterate through lines to identify blocks
return $this->lines(Lines::fromTextLines($text, 0));
} }
# #
@ -326,20 +322,18 @@ final class Parsedown
} }
/** /**
* @param State $State * @param Renderable[] $Renderables
* @param StateRenderable[] $StateRenderables
* @return string * @return string
*/ */
protected function elements(State $State, array $StateRenderables) public static function render(array $Renderables)
{ {
return \array_reduce( return \array_reduce(
$StateRenderables, $Renderables,
/** /**
* @param string $html * @param string $html
* @return string * @return string
*/ */
function ($html, StateRenderable $StateRenderable) use ($State) { function ($html, Renderable $Renderable) {
$Renderable = $StateRenderable->renderable($State);
return ( return (
$html $html
. ($Renderable instanceof Invisible ? '' : "\n") . ($Renderable instanceof Invisible ? '' : "\n")