function Parser::parseLexicalDeclaration

Parses a let or const declaration

Return value

Node\VariableDeclaration|null

File

vendor/mck89/peast/lib/Peast/Syntax/Parser.php, line 1837

Class

Parser

Parser class

Namespace

Peast\Syntax

Code

protected function parseLexicalDeclaration() {
    $state = $this->scanner
        ->getState();
    if ($token = $this->scanner
        ->consumeOneOf(array(
        "let",
        "const",
    ))) {
        $declarations = $this->charSeparatedListOf("parseVariableDeclaration");
        if ($declarations) {
            $this->assertEndOfStatement();
            $node = $this->createNode("VariableDeclaration", $token);
            $node->setKind($token->value);
            $node->setDeclarations($declarations);
            return $this->completeNode($node);
        }
        // "let" can be used as variable name in non-strict mode
        if ($this->scanner
            ->getStrictMode() || $token->value !== "let") {
            $this->error();
        }
        else {
            $this->scanner
                ->setState($state);
        }
    }
    return null;
}