--- /dev/null
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Compiles a node to PHP code.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Compiler implements Twig_CompilerInterface
+{
+ protected $lastLine;
+ protected $source;
+ protected $indentation;
+ protected $env;
+ protected $debugInfo = array();
+ protected $sourceOffset;
+ protected $sourceLine;
+ protected $filename;
+
+ public function __construct(Twig_Environment $env)
+ {
+ $this->env = $env;
+ }
+
+ /**
+ * @deprecated since 1.25 (to be removed in 2.0)
+ */
+ public function getFilename()
+ {
+ @trigger_error(sprintf('The %s() method is deprecated since version 1.25 and will be removed in 2.0.', __FUNCTION__), E_USER_DEPRECATED);
+
+ return $this->filename;
+ }
+
+ /**
+ * Returns the environment instance related to this compiler.
+ *
+ * @return Twig_Environment
+ */
+ public function getEnvironment()
+ {
+ return $this->env;
+ }
+
+ /**
+ * Gets the current PHP code after compilation.
+ *
+ * @return string The PHP code
+ */
+ public function getSource()
+ {
+ return $this->source;
+ }
+
+ /**
+ * Compiles a node.
+ *
+ * @param Twig_NodeInterface $node The node to compile
+ * @param int $indentation The current indentation
+ *
+ * @return $this
+ */
+ public function compile(Twig_NodeInterface $node, $indentation = 0)
+ {
+ $this->lastLine = null;
+ $this->source = '';
+ $this->debugInfo = array();
+ $this->sourceOffset = 0;
+ // source code starts at 1 (as we then increment it when we encounter new lines)
+ $this->sourceLine = 1;
+ $this->indentation = $indentation;
+
+ if ($node instanceof Twig_Node_Module) {
+ // to be removed in 2.0
+ $this->filename = $node->getTemplateName();
+ }
+
+ $node->compile($this);
+
+ return $this;
+ }
+
+ public function subcompile(Twig_NodeInterface $node, $raw = true)
+ {
+ if (false === $raw) {
+ $this->source .= str_repeat(' ', $this->indentation * 4);
+ }
+
+ $node->compile($this);
+
+ return $this;
+ }
+
+ /**
+ * Adds a raw string to the compiled code.
+ *
+ * @param string $string The string
+ *
+ * @return $this
+ */
+ public function raw($string)
+ {
+ $this->source .= $string;
+
+ return $this;
+ }
+
+ /**
+ * Writes a string to the compiled code by adding indentation.
+ *
+ * @return $this
+ */
+ public function write()
+ {
+ $strings = func_get_args();
+ foreach ($strings as $string) {
+ $this->source .= str_repeat(' ', $this->indentation * 4).$string;
+ }
+
+ return $this;
+ }
+
+ /**
+ * Appends an indentation to the current PHP code after compilation.
+ *
+ * @return $this
+ *
+ * @deprecated since 1.27 (to be removed in 2.0).
+ */
+ public function addIndentation()
+ {
+ @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use write(\'\') instead.', E_USER_DEPRECATED);
+
+ $this->source .= str_repeat(' ', $this->indentation * 4);
+
+ return $this;
+ }
+
+ /**
+ * Adds a quoted string to the compiled code.
+ *
+ * @param string $value The string
+ *
+ * @return $this
+ */
+ public function string($value)
+ {
+ $this->source .= sprintf('"%s"', addcslashes($value, "\0\t\"\$\\"));
+
+ return $this;
+ }
+
+ /**
+ * Returns a PHP representation of a given value.
+ *
+ * @param mixed $value The value to convert
+ *
+ * @return $this
+ */
+ public function repr($value)
+ {
+ if (is_int($value) || is_float($value)) {
+ if (false !== $locale = setlocale(LC_NUMERIC, '0')) {
+ setlocale(LC_NUMERIC, 'C');
+ }
+
+ $this->raw($value);
+
+ if (false !== $locale) {
+ setlocale(LC_NUMERIC, $locale);
+ }
+ } elseif (null === $value) {
+ $this->raw('null');
+ } elseif (is_bool($value)) {
+ $this->raw($value ? 'true' : 'false');
+ } elseif (is_array($value)) {
+ $this->raw('array(');
+ $first = true;
+ foreach ($value as $key => $v) {
+ if (!$first) {
+ $this->raw(', ');
+ }
+ $first = false;
+ $this->repr($key);
+ $this->raw(' => ');
+ $this->repr($v);
+ }
+ $this->raw(')');
+ } else {
+ $this->string($value);
+ }
+
+ return $this;
+ }
+
+ /**
+ * Adds debugging information.
+ *
+ * @return $this
+ */
+ public function addDebugInfo(Twig_NodeInterface $node)
+ {
+ if ($node->getTemplateLine() != $this->lastLine) {
+ $this->write(sprintf("// line %d\n", $node->getTemplateLine()));
+
+ // when mbstring.func_overload is set to 2
+ // mb_substr_count() replaces substr_count()
+ // but they have different signatures!
+ if (((int) ini_get('mbstring.func_overload')) & 2) {
+ @trigger_error('Support for having "mbstring.func_overload" different from 0 is deprecated version 1.29 and will be removed in 2.0.', E_USER_DEPRECATED);
+
+ // this is much slower than the "right" version
+ $this->sourceLine += mb_substr_count(mb_substr($this->source, $this->sourceOffset), "\n");
+ } else {
+ $this->sourceLine += substr_count($this->source, "\n", $this->sourceOffset);
+ }
+ $this->sourceOffset = strlen($this->source);
+ $this->debugInfo[$this->sourceLine] = $node->getTemplateLine();
+
+ $this->lastLine = $node->getTemplateLine();
+ }
+
+ return $this;
+ }
+
+ public function getDebugInfo()
+ {
+ ksort($this->debugInfo);
+
+ return $this->debugInfo;
+ }
+
+ /**
+ * Indents the generated code.
+ *
+ * @param int $step The number of indentation to add
+ *
+ * @return $this
+ */
+ public function indent($step = 1)
+ {
+ $this->indentation += $step;
+
+ return $this;
+ }
+
+ /**
+ * Outdents the generated code.
+ *
+ * @param int $step The number of indentation to remove
+ *
+ * @return $this
+ *
+ * @throws LogicException When trying to outdent too much so the indentation would become negative
+ */
+ public function outdent($step = 1)
+ {
+ // can't outdent by more steps than the current indentation level
+ if ($this->indentation < $step) {
+ throw new LogicException('Unable to call outdent() as the indentation would become negative.');
+ }
+
+ $this->indentation -= $step;
+
+ return $this;
+ }
+
+ public function getVarName()
+ {
+ return sprintf('__internal_%s', hash('sha256', uniqid(mt_rand(), true), false));
+ }
+}