/**
* Render a set of tokens with view substitutions
*
* @param array $tokens
* @param mixed $view
* @param array|null $partials
* @return string
*/
public function render(array $tokens, $view, array $partials = null)
{
// Do some pre-initialization of variables used later in the routine
$renderer = $this;
$inLoop = false;
if (is_scalar($view)) {
// Iteration over lists will sometimes involve scalars
$inLoop = true;
}
if (null === $partials) {
$partials = [];
}
$rendered = '';
foreach ($tokens as $token) {
list($type, $data) = $token;
if ($value = $this->handlePragmas($token, $view)) {
$rendered .= $value;
continue;
}
switch ($type) {
case Lexer::TOKEN_CONTENT:
$rendered .= $data;
break;
case Lexer::TOKEN_VARIABLE:
$value = $this->getValue($data, $view);
if (is_scalar($value)) {
if ($test = $this->handlePragmas($token, $value)) {
$rendered .= $test;
break;
}
$rendered .= '' === $value ? '' : $this->escape($value);
break;
}
$pragmaView = [$data => $value];
if ($test = $this->handlePragmas($token, $pragmaView)) {
$rendered .= $test;
break;
}
$rendered .= (string) $value;
break;
case Lexer::TOKEN_VARIABLE_RAW:
$value = $this->getValue($data, $view);
$rendered .= $value;
break;
case Lexer::TOKEN_SECTION:
if ($inLoop) {
// In a loop, with scalar values; skip
break;
}
$section = $this->getValue($data['name'], $view);
if (!$section) {
// Section is not a true value; skip
break;
}
// Build the section view
$sectionView = $section;
if (is_bool($section)) {
// For a boolean true, pass the current view
$sectionView = $view;
}
if (is_array($section) || $section instanceof Traversable) {
if (is_array($section) && $this->isAssocArray($section)) {
// Nested view; pass it as the view
$sectionView = $section;
} else {
// Iteration
$renderedSection = '';
foreach ($section as $sectionView) {
$renderedSection .= $this->render($data['content'], $sectionView);
}
$rendered .= $renderedSection;
break;
}
} elseif (is_callable($section) && $this->isValidCallback($section)) {
// Higher order section
// Execute the callback, passing it the section's template
// string, as well as a renderer lambda.
$mustache = $this->mustache;
$invokedPragmas = $this->invokedPragmas;
$rendered .= call_user_func($section, $data['template'], function ($text) use($renderer, $mustache, $view, $partials) {
$tokens = $mustache->tokenize($text);
return $renderer->render($tokens, $view, $partials);
});
$this->registerPragmas($invokedPragmas);
break;
} elseif (is_object($section)) {
// In this case, the child object is the view.
$sectionView = $section;
} else {
// All other types, simply pass the current view
$sectionView = $view;
}
// Render the section
$invokedPragmas = $this->invokedPragmas;
$rendered .= $this->render($data['content'], $sectionView);
$this->registerPragmas($invokedPragmas);
break;
case Lexer::TOKEN_SECTION_INVERT:
if ($inLoop) {
// In a loop, with scalar values; skip
break;
}
$section = $this->getValue($data['name'], $view);
if ($section) {
// If a value exists for the section, we skip it
$rendered .= '';
break;
}
// Otherwise, we render it
$invokedPragmas = $this->invokedPragmas;
$rendered .= $this->render($data['content'], $view);
$this->registerPragmas($invokedPragmas);
break;
case Lexer::TOKEN_PLACEHOLDER:
if ($inLoop) {
// In a loop, with scalar values; skip
break;
}
$rendered .= $this->render($data['content'], $view);
break;
case Lexer::TOKEN_PARTIAL:
if ($inLoop) {
// In a loop, with scalar values; skip
break;
}
$invokedPragmas = $this->invokedPragmas;
$this->clearInvokedPragmas();
if (!isset($data['tokens'])) {
$name = $data['partial'];
if (isset($partials[$data['partial']])) {
// Partial invoked is an aliased partial
$rendered .= $this->render($partials[$data['partial']], $view);
} else {
$partialTokens = $this->mustache->tokenize($data['partial']);
$rendered .= $this->render($partialTokens, $view);
}
$this->registerPragmas($invokedPragmas);
break;
}
$rendered .= $this->render($data['tokens'], $view);
$this->registerPragmas($invokedPragmas);
break;
case Lexer::TOKEN_PRAGMA:
$this->registerPragma($data);
break;
case Lexer::TOKEN_DELIM_SET:
case Lexer::TOKEN_COMMENT:
default:
// do nothing; only necessary for tokenization/parsing
break;
}
}
return $rendered;
}
