basics.pl -- Various general DCG utilities |

alpha_to_lower/3 | Read a letter (class `alpha` ) and return it as a lowercase letter. | |

atom/3 | Generate codes of Atom. | |

blank/2 | Take next `space` character from input. | |

blanks/2 | Skip zero or more white-space characters. | |

blanks_to_nl/2 | Take a sequence of blank//0 codes if blanks are followed by a newline or end of the input. | |

csym/3 | Recognise a C symbol according to the `csymf` and `csym` code type classification provided by the C library. | |

digit/3 | Number processing. | |

digits/3 | Number processing. | |

eol/2 | Matches end-of-line. | |

eos/2 | Matches end-of-input. | |

float/3 | Process a floating point number. | |

integer/3 | Number processing. | |

nonblank/3 | Code is the next non-blank (`graph` ) character. | |

nonblanks/3 | Take all `graph` characters. | |

number/3 | Generate extract a number. | |

prolog_var_name/3 | Matches a Prolog variable name. | |

remainder/3 | Unify List with the remainder of the input. | |

string/3 | Take as few as possible tokens from the input, taking one more each time on backtracking. | |

string_without/4 | Take as many codes from the input until the next character code appears in the list EndCodes. | |

white/2 | Take next `white` character from input. | |

whites/2 | Skip white space *inside* a line. | |

xdigit/3 | True if the next code is a hexdecimal digit with Weight. | |

xdigits/3 | List of weights of a sequence of hexadecimal codes. | |

xinteger/3 | Generate or extract an integer from a sequence of hexadecimal digits. | |

high_order.pl -- High order grammar operations |

foreach/4 | Generate a list from the solutions of Generator. | |

foreach/5 | Generate a list from the solutions of Generator. | |

optional/4 | Perform an optional match, executing Default if Match is not matched. | |

sequence/4 | Match or generate a sequence of Element. | |

sequence/5 | Match or generate a sequence of Element where each pair of elements is separated by Sep. | |

sequence/7 | Match or generate a sequence of Element enclosed by Start end End, where each pair of elements is separated by Sep. | |