You are here

abstract protected function FeedsExBase::validateExpression in Feeds extensible parsers 7

Same name and namespace in other branches
  1. 7.2 src/FeedsExBase.inc \FeedsExBase::validateExpression()

Validates an expression.

Parameters

string &$expression: The expression to validate.

Return value

string|null Return the error string, or null if validation was passed.

1 call to FeedsExBase::validateExpression()
FeedsExBase::configFormValidate in src/FeedsExBase.inc
4 methods override FeedsExBase::validateExpression()
FeedsExJmesPath::validateExpression in src/FeedsExJmesPath.inc
Validates an expression.
FeedsExJsonPath::validateExpression in src/FeedsExJsonPath.inc
Validates an expression.
FeedsExTestUi::validateExpression in tests/FeedsExTestUi.inc
Validates an expression.
FeedsExXml::validateExpression in src/FeedsExXml.inc
Validates an expression.

File

src/FeedsExBase.inc, line 72
Contains FeedsExBase.

Class

FeedsExBase
The Feeds extensible parser.

Code

protected abstract function validateExpression(&$expression);