Update compiler options to hold variables

app/Engine/CfnppOptions.php

@@ -11,4 +11,69 @@ namespace App\Engine;
  */
 class CfnppOptions implements IOptions
 {
+	/**
+	 * Store variables for use in templates.
+	 *
+	 * @var array<string,mixed>
+	 */
+	protected $variables;
+
+	public function __construct()
+	{
+		$this->variables = [];
+	}
+
+	public function setVariables(array $variables): void
+	{
+		$this->variables = $variables;
+	}
+
+	/**
+	 * Retrieve all variables.
+	 *
+	 * @return array<string,mixed>
+	 */
+	public function getVariables(): array
+	{
+		return $this->variables;
+	}
+
+	/**
+	 * Retrieve the value of a single variable.
+	 *
+	 * @param  string    $name
+	 * @throws Exception if variable does not exist
+	 * @return mixed
+	 */
+	public function getVariable(string $name)
+	{
+		if (!isset($this->variables[$name]))
+		{
+			throw new \Exception('Unset variable: '.$name);
+		}
+		return $this->variables[$name];
+	}
+
+	/**
+	 * Set a single variable.
+	 *
+	 * @param  string $name
+	 * @param  mixed  $value
+	 * @return void
+	 */
+	public function setVariable(string $name, $value): void
+	{
+		$this->variables[$name] = $value;
+	}
+
+	/**
+	 * Check if a variable exists.
+	 *
+	 * @param  string $name
+	 * @return bool
+	 */
+	public function hasVariable(string $name): bool
+	{
+		return isset($this->variables[$name]);
+	}
 }

app/Engine/IOptions.php

@@ -11,4 +11,43 @@ namespace App\Engine;
  */
 interface IOptions
 {
+	/**
+	 * Set variables for use in template.
+	 *
+	 * @param  array<string, mixed> $variables
+	 * @return void
+	 */
+	public function setVariables(array $variables): void;
+
+	/**
+	 * Retrieve all variables set.
+	 *
+	 * @return array<string,mixed>
+	 */
+	public function getVariables(): array;
+
+	/**
+	 * Retrieve the value of a single variable.
+	 *
+	 * @param  string $name
+	 * @return mixed
+	 */
+	public function getVariable(string $name);
+
+	/**
+	 * Set a single variable.
+	 *
+	 * @param  string $name
+	 * @param  mixed  $value
+	 * @return void
+	 */
+	public function setVariable(string $name, $value): void;
+
+	/**
+	 * Check if a variable exists.
+	 *
+	 * @param  string $name
+	 * @return bool
+	 */
+	public function hasVariable(string $name): bool;
 }