91 lines
2.6 KiB
PHP
91 lines
2.6 KiB
PHP
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<?php
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namespace Sasae;
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use InvalidArgumentException;
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use Stringable;
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use Twig\TemplateWrapper as TwigTemplateWrapper;
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/**
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* Provides a wrapper of Twig\TemplateWrapper.
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*/
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class SasaeContext implements Stringable {
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/**
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* @internal
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* @param array<string, mixed> $vars
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*/
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public function __construct(
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private TwigTemplateWrapper $wrapper,
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private array $vars = []
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) {}
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/**
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* Returns the underlying wrapper instance.
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*
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* @return TwigTemplateWrapper
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*/
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public function getWrapper(): TwigTemplateWrapper {
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return $this->wrapper;
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}
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/**
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* Sets a local variable.
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*
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* $path is evaluated to allow accessing deeper layer arrays without overwriting it entirely.
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*
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* @param string $path Array path to the variable.
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* @param mixed $value Desired value.
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*/
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public function setVar(string $path, mixed $value): void {
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$path = explode('.', $path);
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$target = &$this->vars;
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$targetName = array_pop($path);
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if(!empty($path)) {
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$path = array_reverse($path);
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while(($name = array_pop($path)) !== null) {
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if(!is_array($target))
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throw new InvalidArgumentException('The $path you\'re attempting to write to conflicts with a non-array type.');
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if(!array_key_exists($name, $target))
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$target[$name] = [];
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$target = &$target[$name];
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}
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}
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if(!is_array($target))
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throw new InvalidArgumentException('The $path you\'re attempting to write to conflicts with a non-array type.');
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$target[$targetName] = $value;
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}
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/**
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* Merges a set of variables into the local variable set.
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*
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* @param array<string, mixed> $vars Variables to apply to the set.
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*/
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public function setVars(array $vars): void {
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$this->vars = array_merge($this->vars, $vars);
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}
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/**
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* Renders the template to a string, taking additional variables that are not commit to local set.
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*
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* @param ?array<string, mixed> $vars Additional local variables, nullable to avoid additional function calls.
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* @return string Rendered template.
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*/
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public function render(?array $vars = null): string {
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return $this->wrapper->render(
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$vars === null ? $this->vars : array_merge($this->vars, $vars)
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);
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}
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/**
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* Renders the template to a string.
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*
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* @return string Rendered template.
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*/
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public function __toString(): string {
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return $this->render();
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}
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}
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