// To reject a transition to an incomplete node, set_is_phantom() invalidates
// its label and links when it becomes non-phantom.
void set_is_phantom(bool x) {
if (x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
value_ |= IS_PHANTOM_FLAG;
} else {
GRN_DAT_DEBUG_THROW_IF(!is_phantom());
value_ = (value_ & IS_OFFSET_FLAG) | (INVALID_LABEL << CHILD_SHIFT) |
(INVALID_LABEL << SIBLING_SHIFT) | INVALID_LABEL;
}
}
void set_except_is_offset(UInt32 x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
GRN_DAT_DEBUG_THROW_IF((x & IS_OFFSET_FLAG) == IS_OFFSET_FLAG);
value_ = (value_ & IS_OFFSET_FLAG) | x;
}
void set_sibling(UInt32 x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
GRN_DAT_DEBUG_THROW_IF(label() > MAX_LABEL);
GRN_DAT_DEBUG_THROW_IF((sibling() != INVALID_LABEL) && (x == INVALID_LABEL));
value_ = (value_ & ~(LABEL_MASK << SIBLING_SHIFT)) | (x << SIBLING_SHIFT);
}
UInt32 prev() const {
GRN_DAT_DEBUG_THROW_IF(!is_phantom());
return (value_ >> PREV_SHIFT) & BLOCK_MASK;
}
void set_label(UInt32 x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
GRN_DAT_DEBUG_THROW_IF(x > MAX_LABEL);
value_ = (value_ & ~LABEL_MASK) | x;
}
void set_child(UInt32 x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
GRN_DAT_DEBUG_THROW_IF(x > MAX_LABEL);
value_ = (value_ & ~(LABEL_MASK << CHILD_SHIFT)) | (x << CHILD_SHIFT);
}
void set_key_id(UInt32 x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
base_.set_key_id(x);
}
void set_prev(UInt32 x) {
GRN_DAT_DEBUG_THROW_IF(!is_phantom());
GRN_DAT_DEBUG_THROW_IF(x > BLOCK_MASK);
value_ = (value_ & ~(BLOCK_MASK << PREV_SHIFT)) | (x << PREV_SHIFT);
}
void set_offset(UInt32 x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
base_.set_offset(x);
}
void set_base(Base x) {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
base_ = x;
}
UInt32 key_id() const {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
return base_.key_id();
}
UInt32 offset() const {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
return base_.offset();
}
bool is_terminal() const {
GRN_DAT_DEBUG_THROW_IF(is_phantom());
return base_.is_terminal();
}
