From 4f5b44bd3bd490309eb2ba7b44df4769816ba729 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nicolas=20L=C5=93uillet?= Date: Sat, 3 Aug 2013 19:26:54 +0200 Subject: twig implementation --- inc/3rdparty/Twig/Lexer.php | 408 -------------------------------------------- 1 file changed, 408 deletions(-) delete mode 100644 inc/3rdparty/Twig/Lexer.php (limited to 'inc/3rdparty/Twig/Lexer.php') diff --git a/inc/3rdparty/Twig/Lexer.php b/inc/3rdparty/Twig/Lexer.php deleted file mode 100644 index 000b038e..00000000 --- a/inc/3rdparty/Twig/Lexer.php +++ /dev/null @@ -1,408 +0,0 @@ - - */ -class Twig_Lexer implements Twig_LexerInterface -{ - protected $tokens; - protected $code; - protected $cursor; - protected $lineno; - protected $end; - protected $state; - protected $states; - protected $brackets; - protected $env; - protected $filename; - protected $options; - protected $regexes; - protected $position; - protected $positions; - protected $currentVarBlockLine; - - const STATE_DATA = 0; - const STATE_BLOCK = 1; - const STATE_VAR = 2; - const STATE_STRING = 3; - const STATE_INTERPOLATION = 4; - - const REGEX_NAME = '/[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/A'; - const REGEX_NUMBER = '/[0-9]+(?:\.[0-9]+)?/A'; - const REGEX_STRING = '/"([^#"\\\\]*(?:\\\\.[^#"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\'/As'; - const REGEX_DQ_STRING_DELIM = '/"/A'; - const REGEX_DQ_STRING_PART = '/[^#"\\\\]*(?:(?:\\\\.|#(?!\{))[^#"\\\\]*)*/As'; - const PUNCTUATION = '()[]{}?:.,|'; - - public function __construct(Twig_Environment $env, array $options = array()) - { - $this->env = $env; - - $this->options = array_merge(array( - 'tag_comment' => array('{#', '#}'), - 'tag_block' => array('{%', '%}'), - 'tag_variable' => array('{{', '}}'), - 'whitespace_trim' => '-', - 'interpolation' => array('#{', '}'), - ), $options); - - $this->regexes = array( - 'lex_var' => '/\s*'.preg_quote($this->options['whitespace_trim'].$this->options['tag_variable'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_variable'][1], '/').'/A', - 'lex_block' => '/\s*(?:'.preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_block'][1], '/').')\n?/A', - 'lex_raw_data' => '/('.preg_quote($this->options['tag_block'][0].$this->options['whitespace_trim'], '/').'|'.preg_quote($this->options['tag_block'][0], '/').')\s*(?:end%s)\s*(?:'.preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_block'][1], '/').')/s', - 'operator' => $this->getOperatorRegex(), - 'lex_comment' => '/(?:'.preg_quote($this->options['whitespace_trim'], '/').preg_quote($this->options['tag_comment'][1], '/').'\s*|'.preg_quote($this->options['tag_comment'][1], '/').')\n?/s', - 'lex_block_raw' => '/\s*(raw|verbatim)\s*(?:'.preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '/').'\s*|\s*'.preg_quote($this->options['tag_block'][1], '/').')/As', - 'lex_block_line' => '/\s*line\s+(\d+)\s*'.preg_quote($this->options['tag_block'][1], '/').'/As', - 'lex_tokens_start' => '/('.preg_quote($this->options['tag_variable'][0], '/').'|'.preg_quote($this->options['tag_block'][0], '/').'|'.preg_quote($this->options['tag_comment'][0], '/').')('.preg_quote($this->options['whitespace_trim'], '/').')?/s', - 'interpolation_start' => '/'.preg_quote($this->options['interpolation'][0], '/').'\s*/A', - 'interpolation_end' => '/\s*'.preg_quote($this->options['interpolation'][1], '/').'/A', - ); - } - - /** - * Tokenizes a source code. - * - * @param string $code The source code - * @param string $filename A unique identifier for the source code - * - * @return Twig_TokenStream A token stream instance - */ - public function tokenize($code, $filename = null) - { - if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) { - $mbEncoding = mb_internal_encoding(); - mb_internal_encoding('ASCII'); - } - - $this->code = str_replace(array("\r\n", "\r"), "\n", $code); - $this->filename = $filename; - $this->cursor = 0; - $this->lineno = 1; - $this->end = strlen($this->code); - $this->tokens = array(); - $this->state = self::STATE_DATA; - $this->states = array(); - $this->brackets = array(); - $this->position = -1; - - // find all token starts in one go - preg_match_all($this->regexes['lex_tokens_start'], $this->code, $matches, PREG_OFFSET_CAPTURE); - $this->positions = $matches; - - while ($this->cursor < $this->end) { - // dispatch to the lexing functions depending - // on the current state - switch ($this->state) { - case self::STATE_DATA: - $this->lexData(); - break; - - case self::STATE_BLOCK: - $this->lexBlock(); - break; - - case self::STATE_VAR: - $this->lexVar(); - break; - - case self::STATE_STRING: - $this->lexString(); - break; - - case self::STATE_INTERPOLATION: - $this->lexInterpolation(); - break; - } - } - - $this->pushToken(Twig_Token::EOF_TYPE); - - if (!empty($this->brackets)) { - list($expect, $lineno) = array_pop($this->brackets); - throw new Twig_Error_Syntax(sprintf('Unclosed "%s"', $expect), $lineno, $this->filename); - } - - if (isset($mbEncoding)) { - mb_internal_encoding($mbEncoding); - } - - return new Twig_TokenStream($this->tokens, $this->filename); - } - - protected function lexData() - { - // if no matches are left we return the rest of the template as simple text token - if ($this->position == count($this->positions[0]) - 1) { - $this->pushToken(Twig_Token::TEXT_TYPE, substr($this->code, $this->cursor)); - $this->cursor = $this->end; - - return; - } - - // Find the first token after the current cursor - $position = $this->positions[0][++$this->position]; - while ($position[1] < $this->cursor) { - if ($this->position == count($this->positions[0]) - 1) { - return; - } - $position = $this->positions[0][++$this->position]; - } - - // push the template text first - $text = $textContent = substr($this->code, $this->cursor, $position[1] - $this->cursor); - if (isset($this->positions[2][$this->position][0])) { - $text = rtrim($text); - } - $this->pushToken(Twig_Token::TEXT_TYPE, $text); - $this->moveCursor($textContent.$position[0]); - - switch ($this->positions[1][$this->position][0]) { - case $this->options['tag_comment'][0]: - $this->lexComment(); - break; - - case $this->options['tag_block'][0]: - // raw data? - if (preg_match($this->regexes['lex_block_raw'], $this->code, $match, null, $this->cursor)) { - $this->moveCursor($match[0]); - $this->lexRawData($match[1]); - // {% line \d+ %} - } elseif (preg_match($this->regexes['lex_block_line'], $this->code, $match, null, $this->cursor)) { - $this->moveCursor($match[0]); - $this->lineno = (int) $match[1]; - } else { - $this->pushToken(Twig_Token::BLOCK_START_TYPE); - $this->pushState(self::STATE_BLOCK); - $this->currentVarBlockLine = $this->lineno; - } - break; - - case $this->options['tag_variable'][0]: - $this->pushToken(Twig_Token::VAR_START_TYPE); - $this->pushState(self::STATE_VAR); - $this->currentVarBlockLine = $this->lineno; - break; - } - } - - protected function lexBlock() - { - if (empty($this->brackets) && preg_match($this->regexes['lex_block'], $this->code, $match, null, $this->cursor)) { - $this->pushToken(Twig_Token::BLOCK_END_TYPE); - $this->moveCursor($match[0]); - $this->popState(); - } else { - $this->lexExpression(); - } - } - - protected function lexVar() - { - if (empty($this->brackets) && preg_match($this->regexes['lex_var'], $this->code, $match, null, $this->cursor)) { - $this->pushToken(Twig_Token::VAR_END_TYPE); - $this->moveCursor($match[0]); - $this->popState(); - } else { - $this->lexExpression(); - } - } - - protected function lexExpression() - { - // whitespace - if (preg_match('/\s+/A', $this->code, $match, null, $this->cursor)) { - $this->moveCursor($match[0]); - - if ($this->cursor >= $this->end) { - throw new Twig_Error_Syntax(sprintf('Unclosed "%s"', $this->state === self::STATE_BLOCK ? 'block' : 'variable'), $this->currentVarBlockLine, $this->filename); - } - } - - // operators - if (preg_match($this->regexes['operator'], $this->code, $match, null, $this->cursor)) { - $this->pushToken(Twig_Token::OPERATOR_TYPE, $match[0]); - $this->moveCursor($match[0]); - } - // names - elseif (preg_match(self::REGEX_NAME, $this->code, $match, null, $this->cursor)) { - $this->pushToken(Twig_Token::NAME_TYPE, $match[0]); - $this->moveCursor($match[0]); - } - // numbers - elseif (preg_match(self::REGEX_NUMBER, $this->code, $match, null, $this->cursor)) { - $number = (float) $match[0]; // floats - if (ctype_digit($match[0]) && $number <= PHP_INT_MAX) { - $number = (int) $match[0]; // integers lower than the maximum - } - $this->pushToken(Twig_Token::NUMBER_TYPE, $number); - $this->moveCursor($match[0]); - } - // punctuation - elseif (false !== strpos(self::PUNCTUATION, $this->code[$this->cursor])) { - // opening bracket - if (false !== strpos('([{', $this->code[$this->cursor])) { - $this->brackets[] = array($this->code[$this->cursor], $this->lineno); - } - // closing bracket - elseif (false !== strpos(')]}', $this->code[$this->cursor])) { - if (empty($this->brackets)) { - throw new Twig_Error_Syntax(sprintf('Unexpected "%s"', $this->code[$this->cursor]), $this->lineno, $this->filename); - } - - list($expect, $lineno) = array_pop($this->brackets); - if ($this->code[$this->cursor] != strtr($expect, '([{', ')]}')) { - throw new Twig_Error_Syntax(sprintf('Unclosed "%s"', $expect), $lineno, $this->filename); - } - } - - $this->pushToken(Twig_Token::PUNCTUATION_TYPE, $this->code[$this->cursor]); - ++$this->cursor; - } - // strings - elseif (preg_match(self::REGEX_STRING, $this->code, $match, null, $this->cursor)) { - $this->pushToken(Twig_Token::STRING_TYPE, stripcslashes(substr($match[0], 1, -1))); - $this->moveCursor($match[0]); - } - // opening double quoted string - elseif (preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, null, $this->cursor)) { - $this->brackets[] = array('"', $this->lineno); - $this->pushState(self::STATE_STRING); - $this->moveCursor($match[0]); - } - // unlexable - else { - throw new Twig_Error_Syntax(sprintf('Unexpected character "%s"', $this->code[$this->cursor]), $this->lineno, $this->filename); - } - } - - protected function lexRawData($tag) - { - if (!preg_match(str_replace('%s', $tag, $this->regexes['lex_raw_data']), $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) { - throw new Twig_Error_Syntax(sprintf('Unexpected end of file: Unclosed "%s" block', $tag), $this->lineno, $this->filename); - } - - $text = substr($this->code, $this->cursor, $match[0][1] - $this->cursor); - $this->moveCursor($text.$match[0][0]); - - if (false !== strpos($match[1][0], $this->options['whitespace_trim'])) { - $text = rtrim($text); - } - - $this->pushToken(Twig_Token::TEXT_TYPE, $text); - } - - protected function lexComment() - { - if (!preg_match($this->regexes['lex_comment'], $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) { - throw new Twig_Error_Syntax('Unclosed comment', $this->lineno, $this->filename); - } - - $this->moveCursor(substr($this->code, $this->cursor, $match[0][1] - $this->cursor).$match[0][0]); - } - - protected function lexString() - { - if (preg_match($this->regexes['interpolation_start'], $this->code, $match, null, $this->cursor)) { - $this->brackets[] = array($this->options['interpolation'][0], $this->lineno); - $this->pushToken(Twig_Token::INTERPOLATION_START_TYPE); - $this->moveCursor($match[0]); - $this->pushState(self::STATE_INTERPOLATION); - - } elseif (preg_match(self::REGEX_DQ_STRING_PART, $this->code, $match, null, $this->cursor) && strlen($match[0]) > 0) { - $this->pushToken(Twig_Token::STRING_TYPE, stripcslashes($match[0])); - $this->moveCursor($match[0]); - - } elseif (preg_match(self::REGEX_DQ_STRING_DELIM, $this->code, $match, null, $this->cursor)) { - - list($expect, $lineno) = array_pop($this->brackets); - if ($this->code[$this->cursor] != '"') { - throw new Twig_Error_Syntax(sprintf('Unclosed "%s"', $expect), $lineno, $this->filename); - } - - $this->popState(); - ++$this->cursor; - } - } - - protected function lexInterpolation() - { - $bracket = end($this->brackets); - if ($this->options['interpolation'][0] === $bracket[0] && preg_match($this->regexes['interpolation_end'], $this->code, $match, null, $this->cursor)) { - array_pop($this->brackets); - $this->pushToken(Twig_Token::INTERPOLATION_END_TYPE); - $this->moveCursor($match[0]); - $this->popState(); - } else { - $this->lexExpression(); - } - } - - protected function pushToken($type, $value = '') - { - // do not push empty text tokens - if (Twig_Token::TEXT_TYPE === $type && '' === $value) { - return; - } - - $this->tokens[] = new Twig_Token($type, $value, $this->lineno); - } - - protected function moveCursor($text) - { - $this->cursor += strlen($text); - $this->lineno += substr_count($text, "\n"); - } - - protected function getOperatorRegex() - { - $operators = array_merge( - array('='), - array_keys($this->env->getUnaryOperators()), - array_keys($this->env->getBinaryOperators()) - ); - - $operators = array_combine($operators, array_map('strlen', $operators)); - arsort($operators); - - $regex = array(); - foreach ($operators as $operator => $length) { - // an operator that ends with a character must be followed by - // a whitespace or a parenthesis - if (ctype_alpha($operator[$length - 1])) { - $regex[] = preg_quote($operator, '/').'(?=[\s()])'; - } else { - $regex[] = preg_quote($operator, '/'); - } - } - - return '/'.implode('|', $regex).'/A'; - } - - protected function pushState($state) - { - $this->states[] = $this->state; - $this->state = $state; - } - - protected function popState() - { - if (0 === count($this->states)) { - throw new Exception('Cannot pop state without a previous state'); - } - - $this->state = array_pop($this->states); - } -} -- cgit v1.2.3