%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* This file is part of the Nette Framework (http://nette.org)
*
* Copyright (c) 2004 David Grudl (http://davidgrudl.com)
*
* For the full copyright and license information, please view
* the file license.txt that was distributed with this source code.
*/
namespace Nette\Latte;
use Nette;
/**
* PHP code generator helpers.
*
* @author David Grudl
*/
class PhpWriter extends Nette\Object
{
/** @var MacroTokenizer */
private $argsTokenizer;
/** @var string */
private $modifiers;
/** @var Compiler */
private $compiler;
public static function using(MacroNode $node, Compiler $compiler = NULL)
{
return new static($node->tokenizer, $node->modifiers, $compiler);
}
public function __construct(MacroTokenizer $argsTokenizer, $modifiers = NULL, Compiler $compiler = NULL)
{
$this->argsTokenizer = $argsTokenizer;
$this->modifiers = $modifiers;
$this->compiler = $compiler;
}
/**
* Expands %node.word, %node.array, %node.args, %escape(), %modify(), %var, %raw in code.
* @param string
* @return string
*/
public function write($mask)
{
$args = func_get_args();
array_shift($args);
$word = strpos($mask, '%node.word') === FALSE ? NULL : $this->argsTokenizer->fetchWord();
$me = $this;
$mask = Nette\Utils\Strings::replace($mask, '#%escape(\(([^()]*+|(?1))+\))#', function($m) use ($me) {
return $me->escape(substr($m[1], 1, -1));
});
$mask = Nette\Utils\Strings::replace($mask, '#%modify(\(([^()]*+|(?1))+\))#', function($m) use ($me) {
return $me->formatModifiers(substr($m[1], 1, -1));
});
return Nette\Utils\Strings::replace($mask, '#([,+]\s*)?%(node\.word|node\.array|node\.args|var|raw)(\?)?(\s*\+\s*)?()#',
function($m) use ($me, $word, & $args) {
list(, $l, $macro, $cond, $r) = $m;
switch ($macro) {
case 'node.word':
$code = $me->formatWord($word); break;
case 'node.args':
$code = $me->formatArgs(); break;
case 'node.array':
$code = $me->formatArray();
$code = $cond && $code === 'array()' ? '' : $code; break;
case 'var':
$code = var_export(array_shift($args), TRUE); break;
case 'raw':
$code = (string) array_shift($args); break;
}
if ($cond && $code === '') {
return $r ? $l : $r;
} else {
return $l . $code . $r;
}
});
}
/**
* Formats modifiers calling.
* @param string
* @return string
*/
public function formatModifiers($var)
{
$modifiers = ltrim($this->modifiers, '|');
if (!$modifiers) {
return $var;
}
$tokenizer = $this->preprocess(new MacroTokenizer($modifiers));
$inside = FALSE;
while ($token = $tokenizer->fetchToken()) {
if ($token['type'] === MacroTokenizer::T_WHITESPACE) {
$var = rtrim($var) . ' ';
} elseif (!$inside) {
if ($token['type'] === MacroTokenizer::T_SYMBOL) {
if ($this->compiler && $token['value'] === 'escape') {
$var = $this->escape($var);
$tokenizer->fetch('|');
} else {
$var = "\$template->" . $token['value'] . "($var";
$inside = TRUE;
}
} else {
throw new CompileException("Modifier name must be alphanumeric string, '$token[value]' given.");
}
} else {
if ($token['value'] === ':' || $token['value'] === ',') {
$var = $var . ', ';
} elseif ($token['value'] === '|') {
$var = $var . ')';
$inside = FALSE;
} else {
$var .= $this->canQuote($tokenizer) ? "'$token[value]'" : $token['value'];
}
}
}
return $inside ? "$var)" : $var;
}
/**
* Formats macro arguments to PHP code.
* @return string
*/
public function formatArgs()
{
$out = '';
$tokenizer = $this->preprocess();
while ($token = $tokenizer->fetchToken()) {
$out .= $this->canQuote($tokenizer) ? "'$token[value]'" : $token['value'];
}
return $out;
}
/**
* Formats macro arguments to PHP array.
* @return string
*/
public function formatArray()
{
$out = '';
$expand = NULL;
$tokenizer = $this->preprocess();
while ($token = $tokenizer->fetchToken()) {
if ($token['value'] === '(expand)' && $token['depth'] === 0) {
$expand = TRUE;
$out .= '),';
} elseif ($expand && ($token['value'] === ',') && !$token['depth']) {
$expand = FALSE;
$out .= ', array(';
} else {
$out .= $this->canQuote($tokenizer) ? "'$token[value]'" : $token['value'];
}
}
if ($expand === NULL) {
return "array($out)";
} else {
return "array_merge(array($out" . ($expand ? ', array(' : '') ."))";
}
}
/**
* Formats parameter to PHP string.
* @param string
* @return string
*/
public function formatWord($s)
{
return (is_numeric($s) || preg_match('#^\$|[\'"]|^true\z|^false\z|^null\z#i', $s))
? $s : '"' . $s . '"';
}
/**
* @return bool
*/
public function canQuote(MacroTokenizer $tokenizer)
{
return $tokenizer->isCurrent(MacroTokenizer::T_SYMBOL)
&& (!$tokenizer->hasPrev() || $tokenizer->isPrev(',', '(', '[', '=', '=>', ':', '?'))
&& (!$tokenizer->hasNext() || $tokenizer->isNext(',', ')', ']', '=', '=>', ':', '|'));
}
/**
* Preprocessor for tokens.
* @return MacroTokenizer
*/
public function preprocess(MacroTokenizer $tokenizer = NULL)
{
$tokenizer = $tokenizer === NULL ? $this->argsTokenizer : $tokenizer;
$inTernary = $prev = NULL;
$tokens = $arrays = array();
while ($token = $tokenizer->fetchToken()) {
$token['depth'] = $depth = count($arrays);
if ($token['type'] === MacroTokenizer::T_COMMENT) {
continue; // remove comments
} elseif ($token['type'] === MacroTokenizer::T_WHITESPACE) {
$tokens[] = $token;
continue;
}
if ($token['value'] === '?') { // short ternary operators without :
$inTernary = $depth;
} elseif ($token['value'] === ':') {
$inTernary = NULL;
} elseif ($inTernary === $depth && ($token['value'] === ',' || $token['value'] === ')' || $token['value'] === ']')) { // close ternary
$tokens[] = MacroTokenizer::createToken(':') + array('depth' => $depth);
$tokens[] = MacroTokenizer::createToken('null') + array('depth' => $depth);
$inTernary = NULL;
}
if ($token['value'] === '[') { // simplified array syntax [...]
if ($arrays[] = $prev['value'] !== ']' && $prev['value'] !== ')' && $prev['type'] !== MacroTokenizer::T_SYMBOL
&& $prev['type'] !== MacroTokenizer::T_VARIABLE && $prev['type'] !== MacroTokenizer::T_KEYWORD
) {
$tokens[] = MacroTokenizer::createToken('array') + array('depth' => $depth);
$token = MacroTokenizer::createToken('(');
}
} elseif ($token['value'] === ']') {
if (array_pop($arrays) === TRUE) {
$token = MacroTokenizer::createToken(')');
}
} elseif ($token['value'] === '(') { // only count
$arrays[] = '(';
} elseif ($token['value'] === ')') { // only count
array_pop($arrays);
}
$tokens[] = $prev = $token;
}
if ($inTernary !== NULL) { // close ternary
$tokens[] = MacroTokenizer::createToken(':') + array('depth' => count($arrays));
$tokens[] = MacroTokenizer::createToken('null') + array('depth' => count($arrays));
}
$tokenizer = clone $tokenizer;
$tokenizer->reset();
$tokenizer->tokens = $tokens;
return $tokenizer;
}
public function escape($s)
{
switch ($this->compiler->getContentType()) {
case Compiler::CONTENT_XHTML:
case Compiler::CONTENT_HTML:
$context = $this->compiler->getContext();
switch ($context[0]) {
case Compiler::CONTEXT_SINGLE_QUOTED:
case Compiler::CONTEXT_DOUBLE_QUOTED:
if ($context[1] === Compiler::CONTENT_JS) {
$s = "Nette\\Templating\\Helpers::escapeJs($s)";
} elseif ($context[1] === Compiler::CONTENT_CSS) {
$s = "Nette\\Templating\\Helpers::escapeCss($s)";
}
$quote = $context[0] === Compiler::CONTEXT_DOUBLE_QUOTED ? '' : ', ENT_QUOTES';
return "htmlSpecialChars($s$quote)";
case Compiler::CONTEXT_COMMENT:
return "Nette\\Templating\\Helpers::escapeHtmlComment($s)";
case Compiler::CONTENT_JS:
case Compiler::CONTENT_CSS:
return 'Nette\Templating\Helpers::escape' . ucfirst($context[0]) . "($s)";
default:
return "Nette\\Templating\\Helpers::escapeHtml($s, ENT_NOQUOTES)";
}
case Compiler::CONTENT_XML:
case Compiler::CONTENT_JS:
case Compiler::CONTENT_CSS:
case Compiler::CONTENT_ICAL:
return 'Nette\Templating\Helpers::escape' . ucfirst($this->compiler->getContentType()) . "($s)";
case Compiler::CONTENT_TEXT:
return $s;
default:
return "\$template->escape($s)";
}
}
}
Zerion Mini Shell 1.0