parse-error

Vocabulary

peg

Definition

IN: peg

TUPLE: parse-error position got messages ;

Methods

USING: accessors debugger io kernel math.parser peg sequences ;

M: parse-error error.
    [
        "Peg parsing error at character position " write
        position>> number>string write
    ] [ ".\nExpected " write messages>> " or " join write ]
    [ "\nGot '" write got>> write "'" print ] tri ;