Module: MemoryViewTestUtils

Defined in:
ext/-test-/memory_view/memory_view.c

Defined Under Namespace

Classes: ExportableString, MultiDimensionalView

Class Method Summary collapse

Class Method Details

.available?(obj) ⇒ Boolean

Returns:

  • (Boolean) 


50
51
52
53
54
 
# File 'ext/-test-/memory_view/memory_view.c', line 50

static VALUE
memory_view_available_p(VALUE mod, VALUE obj)
{
    return rb_memory_view_available_p(obj) ? Qtrue : Qfalse;
}

.extract_item_members(str, format) ⇒ Object 



232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
 
# File 'ext/-test-/memory_view/memory_view.c', line 232

static VALUE
memory_view_extract_item_members(VALUE mod, VALUE str, VALUE format)
{
    StringValue(str);
    StringValue(format);

    rb_memory_view_item_component_t *members;
    size_t n_members;
    const char *err = NULL;
    (void)rb_memory_view_parse_item_format(RSTRING_PTR(format), &members, &n_members, &err);
    if (err != NULL) {
        rb_raise(rb_eArgError, "Unable to parse item format");
    }

    VALUE item = rb_memory_view_extract_item_members(RSTRING_PTR(str), members, n_members);
    xfree(members);

    return item;
}

.fill_contiguous_strides(ndim_v, item_size_v, shape_v, row_major_p) ⇒ Object 



162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
 
# File 'ext/-test-/memory_view/memory_view.c', line 162

static VALUE
memory_view_fill_contiguous_strides(VALUE mod, VALUE ndim_v, VALUE item_size_v, VALUE shape_v, VALUE row_major_p)
{
    ssize_t i, ndim = NUM2SSIZET(ndim_v);

    Check_Type(shape_v, T_ARRAY);
    ssize_t *shape = ALLOC_N(ssize_t, ndim);
    for (i = 0; i < ndim; ++i) {
        shape[i] = NUM2SSIZET(RARRAY_AREF(shape_v, i));
    }

    ssize_t *strides = ALLOC_N(ssize_t, ndim);
    rb_memory_view_fill_contiguous_strides(ndim, NUM2SSIZET(item_size_v), shape, RTEST(row_major_p), strides);

    VALUE result = rb_ary_new_capa(ndim);
    for (i = 0; i < ndim; ++i) {
        rb_ary_push(result, SSIZET2NUM(strides[i]));
    }

    xfree(strides);
    xfree(shape);

    return result;
}

.get_memory_view_info(obj) ⇒ Object 



116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
 
# File 'ext/-test-/memory_view/memory_view.c', line 116

static VALUE
memory_view_get_memory_view_info(VALUE mod, VALUE obj)
{
    rb_memory_view_t view;

    if (!rb_memory_view_get(obj, &view, 0)) {
        return Qnil;
    }

    VALUE hash = rb_hash_new();
    rb_hash_aset(hash, sym_obj, view.obj);
    rb_hash_aset(hash, sym_byte_size, SSIZET2NUM(view.byte_size));
    rb_hash_aset(hash, sym_readonly, view.readonly ? Qtrue : Qfalse);
    rb_hash_aset(hash, sym_format, view.format ? rb_str_new_cstr(view.format) : Qnil);
    rb_hash_aset(hash, sym_item_size, SSIZET2NUM(view.item_size));
    rb_hash_aset(hash, sym_ndim, SSIZET2NUM(view.ndim));

    if (view.shape) {
        VALUE shape = rb_ary_new_capa(view.ndim);
        rb_hash_aset(hash, sym_shape, shape);
    }
    else {
        rb_hash_aset(hash, sym_shape, Qnil);
    }

    if (view.strides) {
        VALUE strides = rb_ary_new_capa(view.ndim);
        rb_hash_aset(hash, sym_strides, strides);
    }
    else {
        rb_hash_aset(hash, sym_strides, Qnil);
    }

    if (view.sub_offsets) {
        VALUE sub_offsets = rb_ary_new_capa(view.ndim);
        rb_hash_aset(hash, sym_sub_offsets, sub_offsets);
    }
    else {
        rb_hash_aset(hash, sym_sub_offsets, Qnil);
    }

    rb_memory_view_release(&view);

    return hash;
}

.item_size_from_format(format) ⇒ Object 



62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'ext/-test-/memory_view/memory_view.c', line 62

static VALUE
memory_view_item_size_from_format(VALUE mod, VALUE format)
{
    const char *c_str = NULL;
    if (!NIL_P(format))
        c_str = StringValueCStr(format);
    const char *err = NULL;
    ssize_t item_size = rb_memory_view_item_size_from_format(c_str, &err);
    if (!err)
        return rb_assoc_new(SSIZET2NUM(item_size), Qnil);
    else
        return rb_assoc_new(SSIZET2NUM(item_size), rb_str_new_cstr(err));
}

.parse_item_format(format) ⇒ Object 



76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
 
# File 'ext/-test-/memory_view/memory_view.c', line 76

static VALUE
memory_view_parse_item_format(VALUE mod, VALUE format)
{
    const char *c_str = NULL;
    if (!NIL_P(format))
        c_str = StringValueCStr(format);
    const char *err = NULL;

    rb_memory_view_item_component_t *members;
    size_t n_members;
    ssize_t item_size = rb_memory_view_parse_item_format(c_str, &members, &n_members, &err);

    VALUE result = rb_ary_new_capa(3);
    rb_ary_push(result, SSIZET2NUM(item_size));

    if (!err) {
        VALUE ary = rb_ary_new_capa((long)n_members);
        size_t i;
        for (i = 0; i < n_members; ++i) {
            VALUE member = rb_hash_new();
            rb_hash_aset(member, sym_format, rb_str_new(&members[i].format, 1));
            rb_hash_aset(member, sym_native_size_p, members[i].native_size_p ? Qtrue : Qfalse);
            rb_hash_aset(member, sym_endianness, members[i].little_endian_p ? sym_little_endian : sym_big_endian);
            rb_hash_aset(member, sym_offset, SSIZET2NUM(members[i].offset));
            rb_hash_aset(member, sym_size, SSIZET2NUM(members[i].size));
            rb_hash_aset(member, sym_repeat, SSIZET2NUM(members[i].repeat));
            rb_ary_push(ary, member);
        }
        xfree(members);
        rb_ary_push(result, ary);
        rb_ary_push(result, Qnil);
    }
    else {
        rb_ary_push(result, Qnil); // members
        rb_ary_push(result, rb_str_new_cstr(err));
    }

    return result;
}

.ref_count_while_exporting(obj, n) ⇒ Object 



225
226
227
228
229
230
 
# File 'ext/-test-/memory_view/memory_view.c', line 225

static VALUE
memory_view_ref_count_while_exporting(VALUE mod, VALUE obj, VALUE n)
{
    Check_Type(n, T_FIXNUM);
    return memory_view_ref_count_while_exporting_i(obj, FIX2LONG(n));
}

.register(obj) ⇒ Object 



56
57
58
59
60
 
# File 'ext/-test-/memory_view/memory_view.c', line 56

static VALUE
memory_view_register(VALUE mod, VALUE obj)
{
    return rb_memory_view_register(obj, &exportable_string_memory_view_entry) ? Qtrue : Qfalse;
}