// Converts Go value to mruby value.
func (m *MRuby) mrubyValue(i interface{}) C.mrb_value {
v := reflect.ValueOf(i)
switch v.Kind() {
case reflect.Invalid:
return C.mrb_nil_value() // mrb_undef_value() explodes
case reflect.Bool:
b := v.Bool()
if b {
return C.mrb_true_value()
} else {
return C.mrb_false_value()
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return C.mrb_fixnum_value(C.mrb_int(v.Int()))
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return C.mrb_fixnum_value(C.mrb_int(v.Uint()))
case reflect.Float32, reflect.Float64:
return C.mrb_float_value((*C.struct_mrb_state)(m.state), C.mrb_float(v.Float()))
case reflect.String:
cs := C.CString(v.String())
defer C.free(unsafe.Pointer(cs))
if v.Type() == symbolT {
return C.mrb_check_intern_cstr(m.state, cs)
} else {
return C.mrb_str_new_cstr(m.state, cs)
}
case reflect.Array, reflect.Slice:
l := v.Len()
res := C.mrb_ary_new_capa(m.state, C.mrb_int(l))
for i := 0; i < l; i++ {
C.mrb_ary_set(m.state, res, C.mrb_int(i), m.mrubyValue(v.Index(i).Interface()))
}
return res
case reflect.Map:
l := v.Len()
res := C.mrb_hash_new_capa(m.state, C.int(l))
for _, key := range v.MapKeys() {
val := v.MapIndex(key)
C.mrb_hash_set(m.state, res, m.mrubyValue(key.Interface()), m.mrubyValue(val.Interface()))
}
return res
}
panic(fmt.Errorf("gomruby bug: failed to convert Go value %#v (%T) to mruby value", i, i))
}
// Loads mruby code. Arguments are exposed as ARGV array.
func (c *LoadContext) Load(code string, args ...interface{}) (res interface{}, err error) {
l := len(args)
ARGV := C.mrb_ary_new_capa(c.m.state, C.mrb_int(l))
for i := 0; i < l; i++ {
ii := C.mrb_int(i)
C.mrb_ary_set(c.m.state, ARGV, ii, c.m.mrubyValue(args[ii]))
}
C.mrb_define_global_const(c.m.state, argvCS, ARGV)
codeC := C.CString(code)
defer C.free(unsafe.Pointer(codeC))
v := C.mrb_load_string_cxt(c.m.state, codeC, c.context)
res = c.m.goValue(v)
if c.m.state.exc != nil {
v = C.mrb_obj_value(unsafe.Pointer(c.m.state.exc))
err = errors.New(c.m.inspect(v))
}
return
}