| /* |
| * Copyright 2011 Google Inc. All Rights Reserved. |
| * |
| * 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 TYPOGRAPHY_FONT_SFNTLY_SRC_SAMPLE_SUBTLY_CHARACTER_PREDICATE_H_ |
| #define TYPOGRAPHY_FONT_SFNTLY_SRC_SAMPLE_SUBTLY_CHARACTER_PREDICATE_H_ |
| |
| #include "sfntly/port/refcount.h" |
| #include "sfntly/port/type.h" |
| |
| namespace subtly { |
| class CharacterPredicate : virtual public sfntly::RefCount { |
| public: |
| CharacterPredicate() {} |
| virtual ~CharacterPredicate() {} |
| virtual bool operator()(int32_t character) const = 0; |
| }; |
| |
| // All characters except for those between [start, end] are rejected |
| class AcceptRange : public CharacterPredicate, |
| public sfntly::RefCounted<AcceptRange> { |
| public: |
| AcceptRange(int32_t start, int32_t end); |
| ~AcceptRange(); |
| virtual bool operator()(int32_t character) const; |
| |
| private: |
| int32_t start_; |
| int32_t end_; |
| }; |
| |
| // All characters in IntegerSet |
| // The set is OWNED by the predicate! Do not modify it. |
| // It will be freed when the predicate is destroyed. |
| class AcceptSet : public CharacterPredicate, |
| public sfntly::RefCounted<AcceptSet> { |
| public: |
| explicit AcceptSet(sfntly::IntegerSet* characters); |
| ~AcceptSet(); |
| virtual bool operator()(int32_t character) const; |
| |
| private: |
| sfntly::IntegerSet* characters_; |
| }; |
| |
| // All characters |
| class AcceptAll : public CharacterPredicate, |
| public sfntly::RefCounted<AcceptAll> { |
| public: |
| AcceptAll() {} |
| ~AcceptAll() {} |
| virtual bool operator()(int32_t character) const; |
| }; |
| } |
| |
| #endif // TYPOGRAPHY_FONT_SFNTLY_SRC_SAMPLE_SUBTLY_CHARACTER_PREDICATE_H_ |