Differential D21713 Diff 51725 src/infrastructure/markup/markuprule/PhutilRemarkupEvalRule.php

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src/infrastructure/markup/markuprule/PhutilRemarkupEvalRule.php

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				<?php

				final class PhutilRemarkupEvalRule extends PhutilRemarkupRule {

				const KEY_EVAL = 'eval';

				public function getPriority() {
				return 50;
				}

				public function apply($text) {
				return preg_replace_callback(
				'/\${{{(.+?)}}}/',
				array($this, 'newExpressionToken'),
				$text);
				}

				public function newExpressionToken(array $matches) {
				$expression = $matches[1];

				if (!$this->isFlatText($expression)) {
				return $matches[0];
				}

				$engine = $this->getEngine();
				$token = $engine->storeText($expression);

				$list_key = self::KEY_EVAL;
				$expression_list = $engine->getTextMetadata($list_key, array());

				$expression_list[] = array(
				'token' => $token,
				'expression' => $expression,
				);

				$engine->setTextMetadata($list_key, $expression_list);

				return $token;
				}

				public function didMarkupText() {
				$engine = $this->getEngine();

				$list_key = self::KEY_EVAL;
				$expression_list = $engine->getTextMetadata($list_key, array());

				foreach ($expression_list as $expression_item) {
				$token = $expression_item['token'];
				$expression = $expression_item['expression'];

				$result = $this->evaluateExpression($expression);

				$engine->overwriteStoredText($token, $result);
				}
				}

				private function evaluateExpression($expression) {
				static $string_map;

				if ($string_map === null) {
				$string_map = array(
				'strings' => array(
				cspeckmimUnsubmitted Not Done Inline Actions Were you thinking of other non-string behavior being useful in the future, so .e.g `${{{config.phabricator.base-uri}}}` could substitute the value of the config or something (assuming policy checks are added)? cspeckmim: Were you thinking of other non-string behavior being useful in the future, so .e.g `${{{config.
				epriestleyAuthorUnsubmitted Done Inline Actions Were you thinking of other non-string behavior being useful in the future, so .e.g `${{{config.phabricator.base-uri}}}` could substitute the value of the config or something (assuming policy checks are added)? Yeah, I'm not sure how much traction this will really get but I imagine making the things-that-can-be-evaluated modular so a source could expose Config or, perhaps, nonsense like: Remaining Open Tasks: ${{{query.key("abcdef").count}}} epriestley: > Were you thinking of other non-string behavior being useful in the future, so .e.g…
				'platform' => array(
				'server' => array(
				'name' => pht('Phabricator'),
				'path' => pht('phabricator/'),
				),
				'client' => array(
				'name' => pht('Arcanist'),
				'path' => pht('arcanist/'),
				),
				),
				),
				);
				}

				$parts = explode('.', $expression);

				$cursor = $string_map;
				foreach ($parts as $part) {
				if (isset($cursor[$part])) {
				$cursor = $cursor[$part];
				} else {
				break;
				}
				}

				if (is_string($cursor)) {
				return $cursor;
				}

				return pht(
				'<Failed to evaluate expression "%s".>',
				$expression);
				cspeckmimUnsubmitted Not Done Inline Actions Oh, so would this just return `$expression` in the case that the lookup failed, or include the escape characters as well, `return '${{{'.$expression.'}}}';` Or should we try to return the original text passed in above without reconstructing it cspeckmim: Oh, so would this just return `$expression` in the case that the lookup failed, or include the…
				}

				}