projects / apple / icu.git / blame
| Commit | Line | Data |
|---|---|---|
| b75a7d8f | 1 | /* |
| b75a7d8f | 2 | * |
| 57a6839d | 3 | * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved |
| b75a7d8f A |
4 | * |
| 5 | */ | |
| 6 | ||
| 7 | #include "LETypes.h" | |
| 8 | #include "MorphTables.h" | |
| 9 | #include "StateTables.h" | |
| 10 | #include "MorphStateTables.h" | |
| 11 | #include "SubtableProcessor.h" | |
| 12 | #include "StateTableProcessor.h" | |
| 374ca955 | 13 | #include "LEGlyphStorage.h" |
| b75a7d8f A |
14 | #include "LESwaps.h" |
| 15 | ||
| 16 | U_NAMESPACE_BEGIN | |
| 17 | ||
| 18 | StateTableProcessor::StateTableProcessor() | |
| 19 | { | |
| 20 | } | |
| 21 | ||
| 57a6839d A |
22 | StateTableProcessor::StateTableProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success) |
| 23 | : SubtableProcessor(morphSubtableHeader, success), stateTableHeader(morphSubtableHeader, success), | |
| 24 | stHeader(stateTableHeader, success, (const StateTableHeader*)&stateTableHeader->stHeader) | |
| b75a7d8f | 25 | { |
| 57a6839d | 26 | if(LE_FAILURE(success)) return; |
| b75a7d8f A |
27 | stateSize = SWAPW(stateTableHeader->stHeader.stateSize); |
| 28 | classTableOffset = SWAPW(stateTableHeader->stHeader.classTableOffset); | |
| 29 | stateArrayOffset = SWAPW(stateTableHeader->stHeader.stateArrayOffset); | |
| 30 | entryTableOffset = SWAPW(stateTableHeader->stHeader.entryTableOffset); | |
| 31 | ||
| 57a6839d A |
32 | classTable = LEReferenceTo<ClassTable>(stateTableHeader, success, ((char *) &stateTableHeader->stHeader + classTableOffset)); |
| 33 | if(LE_FAILURE(success)) return; | |
| b75a7d8f A |
34 | firstGlyph = SWAPW(classTable->firstGlyph); |
| 35 | lastGlyph = firstGlyph + SWAPW(classTable->nGlyphs); | |
| 36 | } | |
| 37 | ||
| 38 | StateTableProcessor::~StateTableProcessor() | |
| 39 | { | |
| 40 | } | |
| 41 | ||
| 57a6839d | 42 | void StateTableProcessor::process(LEGlyphStorage &glyphStorage, LEErrorCode &success) |
| b75a7d8f | 43 | { |
| 57a6839d A |
44 | if (LE_FAILURE(success)) return; |
| 45 | LE_STATE_PATIENCE_INIT(); | |
| 46 | ||
| b75a7d8f A |
47 | // Start at state 0 |
| 48 | // XXX: How do we know when to start at state 1? | |
| 49 | ByteOffset currentState = stateArrayOffset; | |
| 50 | ||
| 51 | // XXX: reverse? | |
| 52 | le_int32 currGlyph = 0; | |
| 374ca955 | 53 | le_int32 glyphCount = glyphStorage.getGlyphCount(); |
| b75a7d8f A |
54 | |
| 55 | beginStateTable(); | |
| 56 | ||
| 57 | while (currGlyph <= glyphCount) { | |
| 57a6839d | 58 | if(LE_STATE_PATIENCE_DECR()) break; // patience exceeded. |
| b75a7d8f A |
59 | ClassCode classCode = classCodeOOB; |
| 60 | if (currGlyph == glyphCount) { | |
| 61 | // XXX: How do we handle EOT vs. EOL? | |
| 62 | classCode = classCodeEOT; | |
| 63 | } else { | |
| 374ca955 | 64 | TTGlyphID glyphCode = (TTGlyphID) LE_GET_GLYPH(glyphStorage[currGlyph]); |
| b75a7d8f A |
65 | |
| 66 | if (glyphCode == 0xFFFF) { | |
| 67 | classCode = classCodeDEL; | |
| 68 | } else if ((glyphCode >= firstGlyph) && (glyphCode < lastGlyph)) { | |
| 69 | classCode = classTable->classArray[glyphCode - firstGlyph]; | |
| 70 | } | |
| 71 | } | |
| 72 | ||
| 57a6839d A |
73 | LEReferenceToArrayOf<EntryTableIndex> stateArray(stHeader, success, currentState, LE_UNBOUNDED_ARRAY); |
| 74 | EntryTableIndex entryTableIndex = stateArray.getObject((le_uint8)classCode, success); | |
| 75 | LE_STATE_PATIENCE_CURR(le_int32, currGlyph); | |
| 374ca955 | 76 | currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex); |
| 57a6839d | 77 | LE_STATE_PATIENCE_INCR(currGlyph); |
| b75a7d8f A |
78 | } |
| 79 | ||
| 80 | endStateTable(); | |
| 81 | } | |
| 82 | ||
| 83 | U_NAMESPACE_END |