Module pear::parsers

Functions

• delimited
  Parse a token stream that starts with start and ends with end, returning all of the tokens in between. The tokens in between must match cond. Succeeds even if there are no tokens between start and end.
• delimited_some
  Parse a token stream that starts with start and ends with end, returning all of the tokens in between. The tokens in between must match cond. There must be at least one token between start and end.
• eat
  Eats the current token if it is token.
• eat_any
  Eats the current token unconditionally. Fails if there are no tokens.
• eat_if
  Eats the token token if cond holds on the current token.
• eat_slice
  Eats the current slice if it is slice.
• enclosed
  Like delimited but keeps the start and end.
• eof
  Succeeds only if the input has reached EOF.
• none
  Consumes no tokens. Always succeeds. Equivalent to take_while(|_| false).
• peek
  Succeeds if the current token is token.
• peek_any
  Returns the current token.
• peek_if
  Succeeds if cond holds for the current token.
• peek_if_copy
  Succeeds if cond holds for the current token.
• peek_slice
  Succeeds if the current slice is slice.
• peek_slice_if
  Succeeds if the current slice is slice.
• skip_any
  Skips the current token unconditionally. Fails if there are no tokens.
• skip_while
  Skips tokens while cond matches.
• take_n
  Takes at most n tokens.
• take_n_if
  Take exactly n tokens, ensuring cond holds on all n.
• take_n_while
  Takes at most n tokens as long as cond holds.
• take_some_while
  Consumes tokens while cond matches and returns them. Succeeds only if at least one token matched cond.
• take_some_while_some_window
  Consumes tokens while cond matches on a window of tokens of size n and returns them. Fails if there aren’t at least n tokens or if no tokens match, otherwise returns all of the tokens before the first failure.
• take_some_while_until
  Consumes tokens while cond matches and the token is not until. Succeeds only if at least one token matched cond.
• take_some_while_window
  Consumes tokens while cond matches on a window of tokens of size n and returns them. Fails if there no tokens match, otherwise returns all of the tokens before the first failure.
• take_until_slice
  Consumes tokens while cond matches on a window of tokens of size n and returns them. Succeeds even if no tokens match.
• take_while
  Consumes tokens while cond matches and returns them. Succeeds even if no tokens match.
• take_while_slice
  Consumes tokens while cond matches on a continously growing slice beginning at a length of 0 and ending when cond fails. Returns the slice between 0 and cond failing. Errors if no such slice exists.
• take_while_some_window
  Consumes tokens while cond matches on a window of tokens of size n and returns them. Fails if there aren’t at least n tokens, otherwise always otherwise always succeeds. If no tokens match, the result will be empty.
• take_while_until
  Consumes tokens while cond matches and the token is not until. Succeeds even if no tokens match.
• take_while_window
  Consumes tokens while cond matches on a window of tokens of size n and returns all of the tokens prior to the first failure to match. For example, given a string of “aaab” and a size 2 window predicate of window == "aa", the return value is "aa" as the first failure to match is at "ab".