diff options
Diffstat (limited to 'native/src/terminal_attributes.h')
-rw-r--r-- | native/src/terminal_attributes.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/native/src/terminal_attributes.h b/native/src/terminal_attributes.h new file mode 100644 index 000000000..1f9815936 --- /dev/null +++ b/native/src/terminal_attributes.h @@ -0,0 +1,78 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed 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. + */ + +#ifndef LATINIME_TERMINAL_ATTRIBUTES_H +#define LATINIME_TERMINAL_ATTRIBUTES_H + +#include "unigram_dictionary.h" + +namespace latinime { + +/** + * This class encapsulates information about a terminal that allows to + * retrieve local node attributes like the list of shortcuts without + * exposing the format structure to the client. + */ +class TerminalAttributes { + public: + class ShortcutIterator { + const uint8_t* const mDict; + bool mHasNextShortcutTarget; + int mPos; + + public: + ShortcutIterator(const uint8_t* dict, const int pos, const uint8_t flags) : mDict(dict), + mPos(pos) { + mHasNextShortcutTarget = (0 != (flags & UnigramDictionary::FLAG_HAS_SHORTCUT_TARGETS)); + } + + inline bool hasNextShortcutTarget() const { + return mHasNextShortcutTarget; + } + + // Gets the shortcut target itself as a uint16_t string. For parameters and return value + // see BinaryFormat::getWordAtAddress. + inline int getNextShortcutTarget(const int maxDepth, uint16_t* outWord) { + const int shortcutFlags = BinaryFormat::getFlagsAndForwardPointer(mDict, &mPos); + mHasNextShortcutTarget = + 0 != (shortcutFlags & UnigramDictionary::FLAG_ATTRIBUTE_HAS_NEXT); + int shortcutAddress = + BinaryFormat::getAttributeAddressAndForwardPointer(mDict, shortcutFlags, &mPos); + return BinaryFormat::getWordAtAddress(mDict, shortcutAddress, maxDepth, outWord); + } + }; + + private: + const uint8_t* const mDict; + const uint8_t mFlags; + const int mStartPos; + + public: + TerminalAttributes(const uint8_t* const dict, const uint8_t flags, const int pos) : + mDict(dict), mFlags(flags), mStartPos(pos) { + } + + inline bool isShortcutOnly() const { + return 0 != (mFlags & UnigramDictionary::FLAG_IS_SHORTCUT_ONLY); + } + + inline ShortcutIterator getShortcutIterator() const { + return ShortcutIterator(mDict, mStartPos, mFlags); + } +}; +} // namespace latinime + +#endif // LATINIME_TERMINAL_ATTRIBUTES_H |