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  • ANN: Dogelog Player 1.3.4 (Interactive Debugger)

    From Mild Shock@3:633/280.2 to All on Mon Jul 7 08:09:36 2025
    Dear All,

    We are happy to announce a new edition of
    the Dogelog player:

    - Enhanced library(fancy):
    As a convenience we provide the additional
    predicate print/[1,2] which checks the flags of
    the output stream. If the output stream has the
    mask MASK_DST_CANS set, it will automatically
    colorize the output. This is for example used in
    the new interactive debugger to print goals.

    - Enhanced library(tools):
    Besides clause listing, the file also provides an
    interactive debugger. The interactive debugger can
    be invoked for a goal by the meta predicate trace/1.
    The interactive debugger is implemented by means of
    meta programming and therefore might executed slower
    than call/1. On the other hand it allows inspecting
    the Byrd Box ports, already supporting useful
    command such as skip.

    - Enhanced library(session):
    The interactive debugger is still minimal, for example
    it does not allow spy points yet. So the leap command
    will leap into the next answer substitution. The end-user
    might not want to continue with the next answer substitution
    in leap mode. Therefore the top-level is now trace/1 aware,
    in that it provides debugger commands as well, such
    as switching to creep mode.

    Have Fun!

    Jan Burse, http://www.herbrand.ai/ , 07.07.2025

    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: ---:- FTN<->UseNet Gate -:--- (3:633/280.2@fidonet)
  • From Mild Shock@3:633/280.2 to All on Wed Jul 23 02:29:07 2025
    Subject: Subtrees First in Dogelog Player (Re: ANN: Dogelog Player 1.3.4
    (Interactive Debugger))


    For best possible experience, we investigated
    rational trees printing. The result is a top-level
    which does not fall back to print <cyclic> for cyclic
    terms anymore, but display a set of cycle defining
    equations. The required native support is minimal,
    a single new built-in same_term/2.

    Alain Colmerauers “Prolog and Infinite Trees“ (1982),
    shows two solutions for cycle breaking. Starting
    with a prototype that generates some non-monster
    equations, we end up with producing monster equations
    for the benefit of the interactive debugger and
    the answer display.

    Subtrees First in Dogelog Player
    https://medium.com/@janburse_2989/2c72018758d6

    Mild Shock schrieb:
    Dear All,

    We are happy to announce a new edition of
    the Dogelog player:

    - Enhanced library(fancy):
    As a convenience we provide the additional
    predicate print/[1,2] which checks the flags of
    the output stream. If the output stream has the
    mask MASK_DST_CANS set, it will automatically
    colorize the output. This is for example used in
    the new interactive debugger to print goals.

    - Enhanced library(tools):
    Besides clause listing, the file also provides an
    interactive debugger. The interactive debugger can
    be invoked for a goal by the meta predicate trace/1.
    The interactive debugger is implemented by means of
    meta programming and therefore might executed slower
    than call/1. On the other hand it allows inspecting
    the Byrd Box ports, already supporting useful
    command such as skip.

    - Enhanced library(session):
    The interactive debugger is still minimal, for example
    it does not allow spy points yet. So the leap command
    will leap into the next answer substitution. The end-user
    might not want to continue with the next answer substitution
    in leap mode. Therefore the top-level is now trace/1 aware,
    in that it provides debugger commands as well, such
    as switching to creep mode.

    Have Fun!

    Jan Burse, http://www.herbrand.ai/ , 07.07.2025


    --- MBSE BBS v1.1.1 (Linux-x86_64)
    * Origin: ---:- FTN<->UseNet Gate -:--- (3:633/280.2@fidonet)