PHP ezcTemplateCursor::pregMatchComplete方法代码示例

 /**
  * Parses the comment by looking for the end marker \n.
  *
  * @param ezcTemplateCursor $cursor
  * @return bool
  */
 protected function parseCurrent(ezcTemplateCursor $cursor)
 {
     $cutOff = false;
     if (!$cursor->atEnd()) {
         $cursor->advance(2);
         $matches = $cursor->pregMatchComplete("#^([^}\r\n]*)(?:(?:})|(\r|\r\n|\n))#");
         if ($matches) {
             // reached end of comment
             $cutOff = false;
             if (isset($matches[2])) {
                 $cursor->advance($matches[2][1] + strlen($matches[2][0]));
                 // Do not include the newline itself in the comment.
                 $cutOff = -1;
             } else {
                 $cursor->advance($matches[1][1] + strlen($matches[1][0]));
             }
         } else {
             $cursor->gotoEnd();
         }
         $commentBlock = new ezcTemplateEolCommentTstNode($this->parser->source, $this->startCursor, clone $cursor);
         if ($cutOff) {
             $commentBlock->commentText = substr($commentBlock->text(), 2, $cutOff);
         } else {
             $commentBlock->commentText = substr($commentBlock->text(), 2);
         }
         $this->appendElement($commentBlock);
         return true;
     }
     return false;
 }

 /**
  * Parses the boolean types by looking for either 'true' or 'false'.
  *
  * @param ezcTemplateCursor $cursor
  * @return bool
  */
 protected function parseCurrent(ezcTemplateCursor $cursor)
 {
     if (!$cursor->atEnd()) {
         // @todo This should check that there is no alphabetical characters
         //       after the true|false.
         $matches = $cursor->pregMatchComplete("#^(true|false)(?:\\W)#i");
         if ($matches === false) {
             return false;
         }
         $name = $matches[1][0];
         $lower = strtolower($name);
         if ($name !== $lower) {
             $this->findNonLowercase();
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_BOOLEAN_NOT_LOWERCASE);
         }
         $cursor->advance(strlen($name));
         $bool = new ezcTemplateLiteralTstNode($this->parser->source, $this->startCursor, $cursor);
         $bool->value = $name == 'true';
         $this->value = $bool->value;
         $this->element = $bool;
         $this->appendElement($bool);
         return true;
     }
     return false;
 }

 /**
  * Parses the statements, foreach, while, if, elseif, etc. 
  *
  * @param ezcTemplateCursor $cursor
  * @return bool
  */
 protected function parseCurrent(ezcTemplateCursor $cursor)
 {
     // Check if any control structure names are used.
     // Note: The code inside the (?:) brace ensures that the next character
     // is not an alphabetical character ie. a word boundary
     $matches = $cursor->pregMatchComplete("#^(tr|tr_context|foreach|while|if|elseif|else|switch|case|default|include|return|break|continue|skip|delimiter|increment|decrement|reset|charset|capture)(?:[^a-zA-Z0-9_])#");
     if ($matches === false) {
         return false;
     }
     $name = $matches[1][0];
     $cursor->advance(strlen($matches[1][0]));
     // control structure map
     $csMap = array();
     $csMap['foreach'] = 'ForeachLoop';
     $csMap['for'] = 'ForLoop';
     $csMap['while'] = 'WhileLoop';
     $csMap['if'] = 'IfCondition';
     $csMap['elseif'] = 'IfCondition';
     $csMap['else'] = 'IfCondition';
     $csMap['switch'] = 'SwitchCondition';
     $csMap['case'] = 'SwitchCondition';
     $csMap['default'] = 'SwitchCondition';
     $csMap['include'] = 'Include';
     $csMap['return'] = 'Include';
     $csMap['break'] = 'Loop';
     $csMap['continue'] = 'Loop';
     $csMap['skip'] = 'Delimiter';
     $csMap['delimiter'] = 'Delimiter';
     $csMap['increment'] = 'Cycle';
     $csMap['decrement'] = 'Cycle';
     $csMap['reset'] = 'Cycle';
     $csMap['charset'] = 'Charset';
     $csMap['capture'] = 'Capture';
     $csMap['tr'] = 'Translation';
     $csMap['tr_context'] = 'TranslationContext';
     // tmp
     if (!isset($csMap[$name])) {
         return false;
     }
     $parser = 'ezcTemplate' . $csMap[$name] . 'SourceToTstParser';
     // tmp
     if (!ezcBaseFeatures::classExists($parser)) {
         return false;
     }
     if (!ezcBaseFeatures::classExists($parser)) {
         throw new ezcTemplateInternalException("Requested parser class <{$parser}> does not exist");
     }
     $controlStructureParser = new $parser($this->parser, $this, null);
     $this->block->name = $name;
     $controlStructureParser->block = $this->block;
     if (!$this->parseRequiredType($controlStructureParser)) {
         return false;
     }
     return true;
 }

 /**
  * Parses the string types by looking for single or double quotes to start
  * the string.
  *
  * @param ezcTemplateCursor $cursor
  * @return bool
  */
 protected function parseCurrent(ezcTemplateCursor $cursor)
 {
     if (!$cursor->atEnd()) {
         $char = $cursor->current();
         if ($char == '"' || $char == "'") {
             $string = new ezcTemplateLiteralTstNode($this->parser->source, $this->startCursor, $cursor);
             $string->quoteType = $char == "'" ? ezcTemplateLiteralTstNode::SINGLE_QUOTE : ezcTemplateLiteralTstNode::DOUBLE_QUOTE;
             $cursor->advance();
             $nextChar = $cursor->current();
             if ($nextChar === $char) {
                 // We know it is an empty string, no need to extract
                 $str = "";
                 $string->value = $str;
                 $this->value = $string->value;
                 $this->element = $string;
                 $this->appendElement($string);
                 $cursor->advance();
                 return true;
             } else {
                 // Match:
                 // ([^{$char}\\\\]|\A)   : Matches non quote ('"', "'"), non backslash (\), or does match the begin of the statement.
                 // (\\\\(\\\\|{$char}))* : Eat double slashes \\ and slash quotes: \' or \".
                 $matches = $cursor->pregMatchComplete("#(?:([^{$char}\\\\]|\\A)(\\\\(\\\\|{$char}))*){$char}#");
                 if ($matches === false) {
                     return false;
                 }
                 $cursor->advance($matches[0][1] + strlen($matches[0][0]));
                 $str = (string) $this->startCursor->subString($cursor->position);
                 $str = substr($str, 1, -1);
                 $string->value = $str;
                 $this->value = $string->value;
                 $this->element = $string;
                 $this->appendElement($string);
                 return true;
             }
         }
     }
     return false;
 }

 /**
  * Parses the block by using sub parser, the conditions are:
  * - The block contains {*...*} in which case ezcTemplateDocCommentSourceToTstParser is
  *   used.
  * - The block contains a generic expression in which case
  *   ezcTemplateExpressionBlockSourceToTstParser is used.
  *
  * @param ezcTemplateCursor $cursor
  * @return bool
  */
 protected function parseCurrent(ezcTemplateCursor $cursor)
 {
     // Check for doc comments which look like {*...*}
     if (!$cursor->atEnd() && $cursor->current() == '*') {
         // got a doc comment block
         if (!$this->parseRequiredType('DocComment', $this->startCursor)) {
             throw new ezcTemplateParserException($this->parser->source, $cursor, $cursor, ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_CLOSING_BLOCK_COMMENT);
         }
         return true;
     }
     // $cursor object in $block will be updated as the parser continues
     $this->block = new ezcTemplateBlockTstNode($this->parser->source, $this->startCursor, $cursor);
     $this->findNextElement();
     // Test for and ending control structure.
     if (!$cursor->atEnd() && $cursor->current() == '/') {
         // got a closing block marker
         $this->block->isClosingBlock = true;
         $closingCursor = clone $cursor;
         $this->block->closingCursor = $closingCursor;
         $cursor->advance(1);
         $this->findNextElement();
         // Check for internal blocks which are known to not support closing markers.
         // foreach|while|if|switch|case|default|delimiter|literal|dynamic|cache_template
         $matches = $cursor->pregMatchComplete("#^(tr|tr_context|elseif|else|include|return|break|continue|skip|increment|decrement|reset|once|var|use|cycle|ldelim|rdelim)(?:[^a-zA-Z0-9_])#");
         if ($matches !== false) {
             throw new ezcTemplateParserException($this->parser->source, $this->block->closingCursor, $this->block->closingCursor, ezcTemplateSourceToTstErrorMessages::MSG_CLOSING_BLOCK_NOW_ALLOWED);
         }
     }
     // Try to parse a control structure
     $controlStructureParser = new ezcTemplateControlStructureSourceToTstParser($this->parser, $this, null);
     $controlStructureParser->block = $this->block;
     if ($this->parseOptionalType($controlStructureParser, null, false)) {
         if ($this->lastParser->status == self::PARSE_PARTIAL_SUCCESS) {
             return false;
         }
         $this->mergeElements($this->lastParser);
         return true;
     }
     // Try to parse a literal block
     if ($this->parseOptionalType('LiteralBlock', $this->startCursor)) {
         return true;
     }
     // Try to parse a declaration block
     if ($this->parseOptionalType('DeclarationBlock', $this->startCursor)) {
         return true;
     }
     // Try to parse as an expression, if this fails the normal block parser
     // is tried.
     if ($this->parseOptionalType('ExpressionBlock', $this->startCursor)) {
         if (!$this->currentCursor->match('}')) {
             if ($this->currentCursor->match('[', false)) {
                 throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_UNEXPECTED_SQUARE_BRACKET_OPEN);
             }
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_CURLY_BRACKET_CLOSE);
         }
         return true;
     }
     if ($cursor->match('}')) {
         // Empty block found, this is allowed but the returned block
         // will be ignored when compiling
         $this->elements[] = $this->lastParser->block;
         return true;
     }
     // Parse the {ldelim} and {rdelim}
     $matches = $this->currentCursor->pregMatchComplete("#^(ldelim|rdelim)(?:[^a-zA-Z0-9_])#");
     $name = $matches[1][0];
     $ldelim = $name == 'ldelim' ? true : false;
     $rdelim = $name == 'rdelim' ? true : false;
     if ($ldelim || $rdelim) {
         $this->currentCursor->advance(strlen($name));
         $this->findNextElement();
         if (!$this->currentCursor->match("}")) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_CURLY_BRACKET_CLOSE);
         }
         $text = new ezcTemplateTextBlockTstNode($this->parser->source, $this->startCursor, $this->endCursor);
         $text->text = $ldelim ? "{" : "}";
         $this->appendElement($text);
         return true;
     }
     // Parse the cache blocks.
     $cacheParser = new ezcTemplateCacheSourceToTstParser($this->parser, $this, null);
     $cacheParser->block = $this->block;
     if ($this->parseOptionalType($cacheParser, null)) {
         return true;
     }
     // Try to parse custom blocks, these are pluggable and follows a generic syntax.
     $customBlockParser = new ezcTemplateCustomBlockSourceToTstParser($this->parser, $this, null);
     $customBlockParser->block = $this->block;
     if ($this->parseOptionalType($customBlockParser, null)) {
         return true;
//.........这里部分代码省略.........

 /**
  * Parses the expression by using the ezcTemplateExpressionSourceToTstParser class.
  *
  * @param ezcTemplateCursor $cursor
  * @return bool
  */
 protected function parseCurrent(ezcTemplateCursor $cursor)
 {
     if ($this->block->isClosingBlock) {
         $this->findNextElement();
         $matches = $cursor->pregMatchComplete("#^([a-zA-Z_][a-zA-Z0-9_-]*)(?:[^a-zA-Z])#i");
         if ($matches === false) {
             return false;
         }
         $name = $matches[1][0];
         // If the custom block is not defined we have to return false.
         $def = $this->getCustomBlockDefinition($name);
         if ($def === false) {
             return false;
         }
         $cursor->advance(strlen($name));
         $this->findNextElement($cursor);
         if (!$cursor->match("}")) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_CURLY_BRACKET_CLOSE);
         }
         $cb = new ezcTemplateCustomBlockTstNode($this->parser->source, $this->startCursor, $cursor);
         $cb->name = $name;
         $cb->isClosingBlock = true;
         $this->appendElement($cb);
         return true;
     }
     // Check for the name of the custom block
     // Note: The code inside the ( ?: ) brace ensures that the next character
     // is not an alphabetical character ie. a word boundary
     $matches = $cursor->pregMatchComplete("#^([a-zA-Z_][a-zA-Z0-9_-]*)(?:[^a-zA-Z])#i");
     if ($matches === false) {
         return false;
     }
     $name = $matches[1][0];
     $cursor->advance(strlen($name));
     $this->findNextElement($cursor);
     // $def = ezcTemplateCustomBlockManager::getInstance()->getDefinition( $name );
     $def = $this->getCustomBlockDefinition($name);
     if ($def === false) {
         return false;
     }
     $cb = new ezcTemplateCustomBlockTstNode($this->parser->source, $this->startCursor, $cursor);
     $cb->definition = $def;
     $cb->name = $name;
     $this->block->isNestingBlock = $cb->isNestingBlock = $def->hasCloseTag;
     $excessParameters = isset($def->excessParameters) && $def->excessParameters ? true : false;
     if (isset($def->startExpressionName) && $def->startExpressionName != "") {
         if (!in_array($def->startExpressionName, $def->optionalParameters) && !in_array($def->startExpressionName, $def->requiredParameters)) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, sprintf(ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_REQUIRED_OR_OPTIONAL_PARAMETER_DEFINITION_IN_CUSTOM_BLOCK, $def->startExpressionName));
         }
         if (!$this->parseOptionalType('Expression', null, false)) {
             if (in_array($def->startExpressionName, $def->requiredParameters)) {
                 throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_EXPRESSION);
             }
         } else {
             if ($this->lastParser->rootOperator instanceof ezcTemplateModifyingOperatorTstNode) {
                 throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_MODIFYING_EXPRESSION_NOT_ALLOWED);
             }
             $cb->namedParameters[$def->startExpressionName] = $this->lastParser->rootOperator;
             $this->findNextElement($cursor);
         }
     }
     while (!$cursor->match("}")) {
         $match = $cursor->pregMatch("#^[a-zA-Z_][a-zA-Z0-9_-]*#");
         if (!$match) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, sprintf(ezcTemplateSourceToTstErrorMessages::MSG_UNEXPECTED_TOKEN, $cursor->current(1)));
         }
         if (!$excessParameters && !in_array($match, $def->optionalParameters) && !in_array($match, $def->requiredParameters)) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, sprintf(ezcTemplateSourceToTstErrorMessages::MSG_UNKNOWN_CUSTOM_BLOCK_PARAMETER, $match));
         }
         if (array_key_exists($match, $cb->namedParameters)) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, sprintf(ezcTemplateSourceToTstErrorMessages::MSG_REASSIGNMENT_CUSTOM_BLOCK_PARAMETER, $match));
         }
         $this->findNextElement($cursor);
         // The '=' is optional.
         if ($cursor->match("=")) {
             $this->findNextElement($cursor);
         }
         // The parameter has an expression.
         if (!$this->parseOptionalType('Expression', null, false)) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_EXPRESSION);
         }
         if ($this->lastParser->rootOperator instanceof ezcTemplateModifyingOperatorTstNode) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, ezcTemplateSourceToTstErrorMessages::MSG_MODIFYING_EXPRESSION_NOT_ALLOWED);
         }
         // Append the parameter to the "namedParameters" array.
         $cb->namedParameters[$match] = $this->lastParser->rootOperator;
     }
     // Check if all requiredParameters are set.
     foreach ($def->requiredParameters as $val) {
         if (!array_key_exists($val, $cb->namedParameters)) {
             throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $this->currentCursor, sprintf(ezcTemplateSourceToTstErrorMessages::MSG_MISSING_CUSTOM_BLOCK_PARAMETER, $val));
         }
     }
     $this->appendElement($cb);
//.........这里部分代码省略.........

 /**
  * Parses the literal by using the ezcTemplateLiteralParser class.
  *
  * @param ezcTemplateCursor $cursor
  * @return bool
  */
 protected function parseCurrent(ezcTemplateCursor $cursor)
 {
     // $cursor will be update as the parser continues
     $this->block = new ezcTemplateLiteralBlockTstNode($this->parser->source, clone $this->startCursor, $cursor);
     // skip whitespace and comments
     if (!$this->findNextElement()) {
         return false;
     }
     $hasClosingMarker = $cursor->current() == '/';
     if ($hasClosingMarker) {
         $closingCursor = clone $cursor;
         $cursor->advance();
         $this->findNextElement();
     }
     $matches = $cursor->pregMatchComplete("#^(literal)(?:[^a-zA-Z0-9_])#");
     if ($matches === false) {
         return false;
     }
     $cursor->advance(strlen($matches[1][0]));
     // skip whitespace and comments
     if (!$this->findNextElement()) {
         return false;
     }
     // Assume end of first {literal} block
     if (!$cursor->match("}")) {
         throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $cursor, ezcTemplateSourceToTstErrorMessages::MSG_EXPECT_CURLY_BRACKET_CLOSE);
     }
     if ($hasClosingMarker) {
         throw new ezcTemplateParserException($this->parser->source, $this->startCursor, $cursor, "Found closing block {/literal} without an opening block.");
     }
     $literalTextCursor = clone $cursor;
     // Start searching for ending literal block.
     while (!$cursor->atEnd()) {
         // Find the next block
         $tagPos = $cursor->findPosition("{");
         if ($tagPos === false) {
             return false;
         }
         $tagCursor = clone $cursor;
         $tagCursor->gotoPosition($tagPos - 1);
         if ($tagCursor->current() == "\\") {
             // This means the tag is escaped and should be treated as text.
             $cursor->copy($tagCursor);
             $cursor->advance(2);
             unset($tagCursor);
             continue;
         }
         // Reached a block {...}
         $cursor->gotoPosition($tagPos);
         $literalTextEndCursor = clone $cursor;
         $cursor->advance();
         $continue = false;
         while (!$cursor->atEnd()) {
             // skip whitespace and comments
             if (!$this->findNextElement()) {
                 return false;
             }
             // Check for end, if not continue search
             if (!$cursor->match('/literal')) {
                 $continue = true;
                 break;
             }
             // skip whitespace and comments
             if (!$this->findNextElement()) {
                 return false;
             }
             if ($cursor->current() == '}') {
                 $this->block->textStartCursor = $literalTextCursor;
                 $this->block->textEndCursor = $literalTextEndCursor;
                 $cursor->advance();
                 $this->block->endCursor = clone $cursor;
                 // Make sure the text is extracted now that the cursor are correct
                 $this->block->storeText();
                 $this->appendElement($this->block);
                 return true;
             }
         }
         if ($continue) {
             continue;
         }
     }
     return false;
 }