Class: Numo::Struct

Inherits:
NArray
  • Object
show all
Defined in:
ext/numo/narray/struct.c

Defined Under Namespace

Modules: Math

Constant Summary collapse

ELEMENT_BIT_SIZE = 
INT2FIX(1)
ELEMENT_BYTE_SIZE = 
rb_float_new(1.0/8)
CONTIGUOUS_STRIDE = 
INT2FIX(1)
UPCAST = 
hCast

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args) ⇒ Object 



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# File 'ext/numo/narray/struct.c', line 221

static VALUE
nst_method_missing(int argc, VALUE *argv, VALUE self)
{
    VALUE s, tag, obj;

    if (argc == 2) {
        s = rb_sym_to_s(argv[0]);
        if (RSTRING_PTR(s)[RSTRING_LEN(s)-1] == '=') {
            tag = rb_str_intern(rb_str_new(RSTRING_PTR(s), RSTRING_LEN(s)-1));
            obj = nst_field(self, tag);
            if (RTEST(obj)) {
                rb_funcall(obj, rb_intern("store"), 1, argv[1]);
                return argv[1];
            }
        }
        return rb_call_super(argc,argv);
    }
    if (argc == 1) {
        obj = nst_field(self,argv[0]);
        if (RTEST(obj)) {
            return obj;
        }
    }
    return rb_call_super(argc,argv);
}

Class Method Details

.[] ⇒ Object

.add_type(*args) ⇒ Object 



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# File 'ext/numo/narray/struct.c', line 783

static VALUE
nst_s_add_type(int argc, VALUE *argv, VALUE mod)
{
    if (argc==0)
        rb_raise(rb_eArgError,
                 "wrong number of arguments (%d for 1)", argc);
    nstruct_add_type(argv[0],argc-1,argv+1,mod);
    return Qnil;
}

.cast ⇒ Object

.dcomplex ⇒ Object

.dfloat ⇒ Object

.int16 ⇒ Object

.int32 ⇒ Object

.int64 ⇒ Object

.int8 ⇒ Object

.new(*args) ⇒ Object

Foo = Numo::Struct.new 

int8     :byte
float64  :float, [2,2]
dcomplex :compl




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# File 'ext/numo/narray/struct.c', line 255

static VALUE
nst_s_new(int argc, VALUE *argv, VALUE klass)
{
    VALUE name=Qnil, rest, size;
    VALUE st, members;
    ID id;

    rb_scan_args(argc, argv, "0*", &rest);
    if (RARRAY_LEN(rest)>0) {
        name = RARRAY_AREF(rest,0);
        if (!NIL_P(name)) {
            VALUE tmp = rb_check_string_type(name);
            if (!NIL_P(tmp)) {
                rb_ary_shift(rest);
            } else {
                name = Qnil;
            }
        }
    }

    if (NIL_P(name)) {
        st = rb_define_class_id(name, klass);
        rb_funcall(klass, rb_intern("inherited"), 1, st);
    }
    else {
        char *cname = StringValuePtr(name);
        id = rb_intern(cname);
        if (!rb_is_const_id(id)) {
            rb_name_error(id, "identifier %s needs to be constant", cname);
        }
        if (rb_const_defined_at(klass, id)) {
            rb_warn("redefining constant Struct::%s", cname);
            rb_mod_remove_const(klass, ID2SYM(id));
        }
        st = rb_define_class_under(klass, rb_id2name(id), klass);
    }

    rb_iv_set(st, "__members__", rb_ary_new());
    rb_iv_set(st, "__offset__", INT2FIX(0));

    if (rb_block_given_p()) {
        rb_mod_module_eval(0, 0, st);
    }

    size = rb_iv_get(st, "__offset__");
    members = rb_iv_get(st, "__members__");
    //printf("size=%d\n",NUM2INT(size));
    rb_define_const(st, CONTIGUOUS_STRIDE, size);
    rb_define_const(st, ELEMENT_BYTE_SIZE, size);
    rb_define_const(st, ELEMENT_BIT_SIZE,  rb_funcall(size,'*',1,INT2FIX(8)));

    OBJ_FREEZE(members);
    rb_define_const(st, "DEFINITIONS", members);

    rb_define_singleton_method(st, "new", rb_class_new_instance, -1);
    //rb_define_singleton_method(st, "[]", rb_class_new_instance, -1);
    rb_define_method(st, "allocate", nst_allocate, 0);

    return st;
}

.scomplex ⇒ Object

.sfloat ⇒ Object

.uint16 ⇒ Object

.uint32 ⇒ Object

.uint64 ⇒ Object

.uint8 ⇒ Object

Instance Method Details

#definition(idx) ⇒ Object 



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# File 'ext/numo/narray/struct.c', line 55

static VALUE
nst_definition(VALUE nst, VALUE idx)
{
    long i;
    VALUE def = nst_definitions(CLASS_OF(nst));
    long  len = RARRAY_LEN(def);

    if (TYPE(idx) == T_STRING || TYPE(idx) == T_SYMBOL) {
        ID id  = rb_to_id(idx);
        for (i=0; i<len; i++) {
            VALUE key = RARRAY_AREF(RARRAY_AREF(def,i),0);
            if (SYM2ID(key) == id) {
                return RARRAY_AREF(def,i);
            }
        }
    } else if (rb_obj_is_kind_of(idx,rb_cNumeric)) {
        i = NUM2LONG(idx);
        if (i<-len || i>=len) {
            rb_raise(rb_eIndexError,"offset %ld out of range of struct(size:%ld)", i, len);
        }
        return RARRAY_AREF(def,i);
    }
    return Qnil;
}

#definitions ⇒ Object

#extract ⇒ Object 



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# File 'ext/numo/narray/struct.c', line 386

static VALUE
nst_extract(VALUE self)
{
    return self;
}

#field(idx) ⇒ Object 



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# File 'ext/numo/narray/struct.c', line 196

VALUE
nst_field(VALUE self, VALUE idx)
{
    VALUE obj;
    narray_view_t *nv;

    obj = nst_field_view(self,idx);
    GetNArrayView(obj,nv);
    if (nv->base.ndim==0) {
        obj = rb_funcall(obj,rb_intern("extract"),0);
    }
    return obj;
}

#field_set(idx, other) ⇒ Object 



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# File 'ext/numo/narray/struct.c', line 210

VALUE
nst_field_set(VALUE self, VALUE idx, VALUE other)
{
    VALUE obj;

    obj = nst_field_view(self,idx);
    rb_funcall(obj,rb_intern("store"),1,other);
    return other;
}

#inspect ⇒ String

Returns a string containing a human-readable representation of NArray.

Returns:

  • (String) 


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# File 'ext/numo/narray/struct.c', line 774

VALUE
nary_struct_inspect(VALUE ary)
{
    VALUE opt;
    opt = nst_create_member_views(ary);
    return na_ndloop_inspect(ary, iter_struct_inspect, opt);
}

#store(other) ⇒ Numo::Struct

Store elements to Numo::Struct from other.

Parameters:

  • other (Object)

Returns:



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# File 'ext/numo/narray/struct.c', line 713

static VALUE
nary_struct_store(VALUE self, VALUE obj)
{
    if (TYPE(obj)==T_ARRAY) {
        nary_struct_store_array(self,obj);
        return self;
    }
    if (CLASS_OF(self) == CLASS_OF(obj)) {
        nary_struct_store_struct(self,obj);
        return self;
    }
    rb_raise(nary_eCastError, "unknown conversion from %s to %s",
             rb_class2name(CLASS_OF(obj)),
             rb_class2name(CLASS_OF(self)));
    return self;
}

#to_a ⇒ Object

rb_define_method(cT, “debug_print”, nary_nstruct_debug_print, 0);



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# File 'ext/numo/narray/struct.c', line 451

static VALUE
nary_struct_to_a(VALUE self)
{
    volatile VALUE opt;
    ndfunc_arg_in_t ain[3] = {{Qnil,0},{sym_loop_opt},{sym_option}};
    ndfunc_arg_out_t aout[1] = {{rb_cArray,0}}; // dummy?
    ndfunc_t ndf = { iter_nstruct_to_a, NO_LOOP, 3, 1, ain, aout };

    opt = nst_create_member_views(self);
    return na_ndloop_cast_narray_to_rarray(&ndf, self, opt);
}