function Parser::parseSelectorPartAttribute

Parses an attribute selector part

Return value

Node\Part\Attribute|null

Throws

Exception

1 call to Parser::parseSelectorPartAttribute()

Parser::parseSelectorParts in vendor/mck89/peast/lib/Peast/Selector/Parser.php

Parses a set of selector pats

File

vendor/mck89/peast/lib/Peast/Selector/Parser.php, line 205

Class

Parser

Selector parser class

Namespace

Peast\Selector

Code

protected function parseSelectorPartAttribute() {
    if (!$this->consume("[")) {
        return null;
    }
    $this->consumeWhitespaces();
    $part = new Node\Part\Attribute();
    if (!($name = $this->consumeWord())) {
        throw new Exception("Missing attribute name");
    }
    $part->addName($name);
    while ($this->consume(".")) {
        if (!($name = $this->consumeWord())) {
            throw new Exception("Missing attribute name after dot");
        }
        $part->addName($name);
    }
    $this->consumeWhitespaces();
    $operator = $this->consumeAny($this->attrOperatorChars);
    if ($operator) {
        if (!in_array($operator, $this->attrOperators)) {
            throw new Exception("Invalid attribute operator '{$operator}'");
        }
        $part->setOperator($operator);
        $this->consumeWhitespaces();
        if (!($value = $this->parseLiteral())) {
            throw new Exception("Missing attribute value");
        }
        $part->setValue($value[0]);
        if ($value[1]) {
            if ($operator != "=") {
                throw new Exception("Only '=' operator is valid for attribute regex match");
            }
            $part->setRegex(true);
        }
        $this->consumeWhitespaces();
        if ($this->consume("i")) {
            if (!is_string($value[0]) || $value[1]) {
                throw new Exception("Case insensitive flag can be used only for string values");
            }
            $part->setCaseInsensitive(true);
            $this->consumeWhitespaces();
        }
    }
    if (!$this->consume("]")) {
        throw new Exception("Unterminated attribute selector");
    }
    return $part;
}