FunctionParser: No static property/methods anymore

Problem: When creating a new "FunctionParser" object, it should not know
the previously registered content functions which were saved in a static
class property and registered via static class method.

If one creates a new "FunctionParser" object, one would expect that the
array of registered content functions in that object is empty.

Changes:
- Make static property "functions" non-static
- Make static method "register" non-static
- Add new method "registerFromArray"

3 files changed, 23 insertions, 7 deletions

diff --git a/core/functions.php b/core/functions.php
index d4337a4..9202bad 100644
--- a/core/functions.php
+++ b/core/functions.php
@@ -101,6 +101,10 @@ function generateItemTemplateData(EntityInterface $Entity): array {
 	$FunctionParser = new FunctionParser;
 	$MarkdownParser = new MarkdownParser;
 
+	$FunctionParser->registerFromArray(
+		Application::getContentFunctions()
+	);
+
 	$attribute = $Entity->getAll(['password']);
 	$attribute = array_change_key_case($attribute, CASE_UPPER);
 
@@ -159,7 +163,11 @@ function generateCategoryDataTree(array $category_data, $root = 0): array {
 function parseEntityContent(EntityInterface $Entity): string {
 	$text = $Entity->get('body');
 
-	$FunctionParser = new FunctionParser();
+	$FunctionParser = new FunctionParser;
+	$FunctionParser->registerFromArray(
+		Application::getContentFunctions()
+	);
+
 	$text = $FunctionParser->transform($text);
 
 	if(Application::get('WRAP_EMOTICONS')) {
diff --git a/core/namespace/Application.php b/core/namespace/Application.php
index 01c36ac..1f1e6f6 100644
--- a/core/namespace/Application.php
+++ b/core/namespace/Application.php
@@ -224,7 +224,6 @@ class Application {
 				contain only numbers, uppercase letters and underscores!');
 		}
 
-		FunctionParser::register($name, $callback);
 		self::$contentFunctions[$name] = $callback;
 	}
 
diff --git a/core/namespace/Parsers/FunctionParser.php b/core/namespace/Parsers/FunctionParser.php
index 02570a0..94a4c92 100644
--- a/core/namespace/Parsers/FunctionParser.php
+++ b/core/namespace/Parsers/FunctionParser.php
@@ -3,7 +3,7 @@ namespace Parsers;
 use ReflectionFunction;
 
 class FunctionParser implements ParserInterface {
-	private static $functions = [];
+	private $functions = [];
 
 	#===============================================================================
 	# Main regex for matching the whole function call
@@ -39,19 +39,28 @@ class FunctionParser implements ParserInterface {
 	#===============================================================================
 	# Register function
 	#===============================================================================
-	public static function register(string $name, callable $callback): void {
+	public function register(string $name, callable $callback): void {
 		$Function = new ReflectionFunction($callback);
-		self::$functions[$name] = [
+		$this->functions[$name] = [
 			'callback' => $callback,
 			'required' => $Function->getNumberOfRequiredParameters()
 		];
 	}
 
 	#===============================================================================
+	# Register multiple functions from array
+	#===============================================================================
+	public function registerFromArray(array $functions): void {
+		foreach($functions as $name => $callback) {
+			$this->register($name, $callback);
+		}
+	}
+
+	#===============================================================================
 	# Parse functions
 	#===============================================================================
 	public function parse(string $text): array {
-		$functionNames = array_keys(self::$functions);
+		$functionNames = array_keys($this->functions);
 		$functionNames = implode('|', $functionNames);
 
 		$pattern = self::FUNCTION_PATTERN;
@@ -72,7 +81,7 @@ class FunctionParser implements ParserInterface {
 	# Transform functions
 	#===============================================================================
 	public function transform(string $text): string {
-		$functionData = self::$functions;
+		$functionData = $this->functions;
 		$functionNames = array_keys($functionData);
 		$functionNames = implode('|', $functionNames);