---
name: "RDF::Query::Parser"
section: "3pm"
platform: "linux"
package: "librdf-query-perl"
version: "2.919-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/RDF::Query::Parser"
---

# RDF::Query::Parser(3pm)

Parser base class

## NAME

RDF::Query::Parser - Parser base class

## VERSION

This document describes RDF::Query::Parser version 2.919.

## METHODS

- "new\_literal ( $literal, $language, $datatype )"

  Returns a new literal structure.

- "new\_variable ( $name )"

  Returns a new variable structure.

- "new\_blank ( $name )"

  Returns a new blank node structure.

- "new\_uri ( $uri )"

  Returns a new variable structure.

- "new\_triple ( $s, $p, $o )"

  Returns a new triple structure.

- "new\_unary\_expression ( $operator, $operand )"

  Returns a new unary expression structure.

- "new\_binary\_expression ( $operator, @operands )"

  Returns a new binary expression structure.

- "new\_function\_expression ( $function, @operands )"

  Returns a new function expression structure.

- "new\_alias\_expression ( $alias, $expression )"

  Returns a new alias expression structure.

- "new\_filter ( $filter\_expr, $pattern )"

  Returns a new filter structure.

- "fail ( $error )"

  Sets the current error to `$error`.

  If the parser is in commit mode (by calling `"set_commit"`), throws a RDF::Query::Error::ParseError object. Otherwise returns `"undef"`.

- "error ()"

  Returns the last error the parser experienced.

## AUTHOR

```
 Gregory Williams <gwilliams@cpan.org>
```