# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
package Lucy::Build::Binding::Object;
use strict;
use warnings;

our $VERSION = '0.005001';
$VERSION = eval $VERSION;

sub bind_all {
    my $class = shift;
    $class->bind_bitvector;
    $class->bind_i32array;
}

sub bind_bitvector {
    my $pod_spec = Clownfish::CFC::Binding::Perl::Pod->new;
    my $synopsis = <<'END_SYNOPSIS';
    my $bit_vec = Lucy::Object::BitVector->new( capacity => 8 );
    my $other   = Lucy::Object::BitVector->new( capacity => 8 );
    $bit_vec->set($_) for ( 0, 2, 4, 6 );
    $other->set($_)   for ( 1, 3, 5, 7 );
    $bit_vec->or($other);
    print "$_\n" for @{ $bit_vec->to_array };    # prints 0 through 7.
END_SYNOPSIS
    my $constructor = <<'END_CONSTRUCTOR';
    my $bit_vec = Lucy::Object::BitVector->new( 
        capacity => $doc_max + 1,   # default 0,
    );
END_CONSTRUCTOR
    $pod_spec->set_synopsis($synopsis);
    $pod_spec->add_constructor( alias => 'new', sample => $constructor );

    my $binding = Clownfish::CFC::Binding::Perl::Class->new(
        parcel     => "Lucy",
        class_name => "Lucy::Object::BitVector",
    );
    $binding->set_pod_spec($pod_spec);

    Clownfish::CFC::Binding::Perl::Class->register($binding);
}

sub bind_i32array {
    my $xs_code = <<'END_XS_CODE';
MODULE = Lucy PACKAGE = Lucy::Object::I32Array

#include "Clownfish/Util/Memory.h"

SV*
new(either_sv, ...)
    SV *either_sv;
CODE:
{
    static const XSBind_ParamSpec param_specs[1] = {
        XSBIND_PARAM("ints", true)
    };
    int32_t        locations[1];
    SV            *ints_sv = NULL;
    AV            *ints_av = NULL;
    lucy_I32Array *self    = NULL;

    XSBind_locate_args(aTHX_ &ST(0), 1, items, param_specs, locations, 1);

    ints_sv = ST(locations[0]);
    if (SvROK(ints_sv)) {
        ints_av = (AV*)SvRV(ints_sv);
    }
    if (ints_av && SvTYPE(ints_av) == SVt_PVAV) {
        int32_t size  = av_len(ints_av) + 1;
        int32_t *ints = (int32_t*)CFISH_MALLOCATE(size * sizeof(int32_t));
        int32_t i;

        for (i = 0; i < size; i++) {
            SV **const sv_ptr = av_fetch(ints_av, i, 0);
            ints[i] = (sv_ptr && XSBind_sv_defined(aTHX_ *sv_ptr))
                      ? SvIV(*sv_ptr)
                      : 0;
        }
        self = (lucy_I32Array*)XSBind_new_blank_obj(aTHX_ either_sv);
        lucy_I32Arr_init(self, ints, size);
    }
    else {
        THROW(CFISH_ERR, "Required param 'ints' isn't an arrayref");
    }

    RETVAL = CFISH_OBJ_TO_SV_NOINC(self);
}
OUTPUT: RETVAL

SV*
to_arrayref(self)
    lucy_I32Array *self;
CODE:
{
    AV *out_av = newAV();
    uint32_t i;
    uint32_t size = LUCY_I32Arr_Get_Size(self);

    av_extend(out_av, size);
    for (i = 0; i < size; i++) {
        int32_t result = LUCY_I32Arr_Get(self, i);
        SV* result_sv = result == -1 ? newSV(0) : newSViv(result);
        av_push(out_av, result_sv);
    }
    RETVAL = newRV_noinc((SV*)out_av);
}
OUTPUT: RETVAL
END_XS_CODE

    my $binding = Clownfish::CFC::Binding::Perl::Class->new(
        parcel     => "Lucy",
        class_name => "Lucy::Object::I32Array",
    );
    $binding->append_xs($xs_code);
    $binding->exclude_constructor;

    Clownfish::CFC::Binding::Perl::Class->register($binding);
}

1;