packages-cpp

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example average/3 does not clear exceptions

2

Running the tests with ``` $HOME//src/swipl-devel/build/src/swipl "-p" "foreign=" "-f" "none" "--no-packs" "--on-error=status" "-s" "$HOME/src/swipl-devel/packages/cpp/test_cpp.pl" ``` ``` ?- average(X, foo(X), Average). ERROR: Unknown procedure: foo/1 ERROR: In: ERROR: [13] foo(_6142) ERROR:...

kamahen

SWI-cpp2.h should be in a namespace

2

The reason is given here: https://google.github.io/styleguide/cppguide.html#Namespaces This would require users of SWI-cpp2.h to add a "using namespace swi_cpp2;" or add "swi_cpp2::" to all references to items in SWI-cpp2.h.

kamahen

PlRecord needs to define move constructor (possibly other classes as well)

1

All classes that contain a pointer or similar need to define a move constructor as well as a copy constructor because the default move constructor doesn't do the right thing....

kamahen

PlException should not use PlRecordExternalCopy (or PlRecord)

1

There should be no need to use the "record" API for the error term. However, there appear to be some corner cases with PlQuery that can create an error term...

kamahen

Add PlPredicate, PlModule (and other?) wrappers

1

kamahen

Quoting @JanWielemaker in a code review (https://github.com/SWI-Prolog/packages-cpp/pull/31): Overall, PL_scan_options() is an ok interface from C, but I think it needs a serious redesign for C++. Variadic argument functions and this...

kamahen

PlFrame should be non-copyable

1

Rationale: If a `PlFrame` object is passed by value, the implicity generated copy constructor creates another `PlFrame` that holds the same `fid` value. We now have two references to the...

vmatare

How to write a predicate with the PREDICATE macro that supports multiple bindings for one variable?

9

I have a beginner question about the SWI-Prolog C++ interface. If this is the wrong place to post such a question, I apologize and ask: Where should I ask such...

airballking

swipl-ld ignores "-goal true" if there's no .pl file

2

In the following `main.pl` is an empty file. If it's specified, `swipl-ld` honours the `-goal true` and if it's not specified, I get the standard SWI-Prolog banner. ``` $ swipl-ld...

kamahen