Expression Linter

Description

Lint your expressions

Syntax

use Symfony\Component\ExpressionLanguage\Lexer;
use Symfony\Component\ExpressionLanguage\Parser;

$lexer=newLexer();$parser = new Parser([]);
$parser->lint($lexer->tokenize($expression),$allowedVariableNames);

$expression{=}^{\prime }foo["som{e}_{k}ey"].callFunction(a?b{)}^{\prime };$allowedVariableNames = [‘foo’, ‘a’, ‘b’];
// Result: no error; expression is valid.

$expression{=}^{\prime }foo["som{e}_{k}ey"{)}^{\prime };$allowedVariableNames = [‘foo’];
// Result: Unclosed ”[” around position 3 for expression foo["some_key").

$expression{=}^{\prime }{key:fookey2:bar}^{\prime };$allowedVariableNames = [‘foo’, ‘bar’];
// Result: A hash value must be followed by a comma
// Unexpected token “name” of value “key2” (“punctuation” expected with value ”,”)
// around position 11 for expression {key: foo key2: bar}.