Ignore: Ignore all until the end

In parcr: Construct Parsers for Structured Text Files

Ignore all until the end

Description

Sometimes, a parser has found the end of the text that needs to be parsed and all following lines can be ignored. Ignore will read and discard all following lines until the end of the file, empty or not. So, this parser will consume all elements until the end of the input vector.

Usage

Ignore()

Details

This parser is identical to

zero_or_more(satisfy(function(x) TRUE)) 

Value

A parser.

Examples

starts_with_a <- function(x) grepl("^a",x)
p <- function() {
  one_or_more(satisfy(starts_with_a)) %then%
  (literal("~End") %ret% NULL) %then%
  Ignore() %then%
  eof()
}
p()(c("ab","abc","~End","boring stuff","more stuff"))

parcr documentation built on June 22, 2024, 10:31 a.m.