mirror of
https://github.com/Obfuscator-Collections/VMProtect.git
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first commit
Version 3.x.x
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VNGhostMans
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// Scintilla source code edit control
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/** @file PositionCache.h
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** Classes for caching layout information.
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**/
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// Copyright 1998-2009 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#ifndef POSITIONCACHE_H
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#define POSITIONCACHE_H
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#ifdef SCI_NAMESPACE
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namespace Scintilla {
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#endif
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static inline bool IsEOLChar(char ch) {
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return (ch == '\r') || (ch == '\n');
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}
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/**
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*/
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class LineLayout {
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private:
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friend class LineLayoutCache;
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int *lineStarts;
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int lenLineStarts;
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/// Drawing is only performed for @a maxLineLength characters on each line.
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int lineNumber;
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bool inCache;
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// no copy ctr or assignment op
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LineLayout(const LineLayout &);
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LineLayout &operator =(const LineLayout &);
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public:
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enum { wrapWidthInfinite = 0x7ffffff };
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int maxLineLength;
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int numCharsInLine;
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int numCharsBeforeEOL;
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enum validLevel { llInvalid, llCheckTextAndStyle, llPositions, llLines } validity;
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int xHighlightGuide;
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bool highlightColumn;
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Selection *psel;
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bool containsCaret;
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int edgeColumn;
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char *chars;
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unsigned char *styles;
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int styleBitsSet;
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char *indicators;
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XYPOSITION *positions;
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char bracePreviousStyles[2];
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// Hotspot support
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int hsStart;
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int hsEnd;
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// Wrapped line support
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int widthLine;
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int lines;
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XYPOSITION wrapIndent; // In pixels
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explicit LineLayout(int maxLineLength_);
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virtual ~LineLayout();
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void Resize(int maxLineLength_);
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void Free();
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void Invalidate(validLevel validity_);
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int LineStart(int line) const;
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int LineLastVisible(int line) const;
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Range SubLineRange(int line) const;
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bool InLine(int offset, int line) const;
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void SetLineStart(int line, int start);
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void SetBracesHighlight(Range rangeLine, Position braces[],
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char bracesMatchStyle, int xHighlight, bool ignoreStyle);
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void RestoreBracesHighlight(Range rangeLine, Position braces[], bool ignoreStyle);
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int FindBefore(XYPOSITION x, int lower, int upper) const;
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int FindPositionFromX(XYPOSITION x, Range range, bool charPosition) const;
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Point PointFromPosition(int posInLine, int lineHeight) const;
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int EndLineStyle() const;
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};
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/**
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*/
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class LineLayoutCache {
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int level;
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std::vector<LineLayout *>cache;
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bool allInvalidated;
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int styleClock;
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int useCount;
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void Allocate(size_t length_);
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void AllocateForLevel(int linesOnScreen, int linesInDoc);
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public:
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LineLayoutCache();
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virtual ~LineLayoutCache();
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void Deallocate();
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enum {
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llcNone=SC_CACHE_NONE,
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llcCaret=SC_CACHE_CARET,
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llcPage=SC_CACHE_PAGE,
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llcDocument=SC_CACHE_DOCUMENT
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};
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void Invalidate(LineLayout::validLevel validity_);
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void SetLevel(int level_);
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int GetLevel() const { return level; }
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LineLayout *Retrieve(int lineNumber, int lineCaret, int maxChars, int styleClock_,
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int linesOnScreen, int linesInDoc);
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void Dispose(LineLayout *ll);
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};
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class PositionCacheEntry {
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unsigned int styleNumber:8;
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unsigned int len:8;
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unsigned int clock:16;
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XYPOSITION *positions;
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public:
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PositionCacheEntry();
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~PositionCacheEntry();
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void Set(unsigned int styleNumber_, const char *s_, unsigned int len_, XYPOSITION *positions_, unsigned int clock);
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void Clear();
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bool Retrieve(unsigned int styleNumber_, const char *s_, unsigned int len_, XYPOSITION *positions_) const;
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static unsigned int Hash(unsigned int styleNumber_, const char *s, unsigned int len);
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bool NewerThan(const PositionCacheEntry &other) const;
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void ResetClock();
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};
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class Representation {
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public:
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std::string stringRep;
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explicit Representation(const char *value="") : stringRep(value) {
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}
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};
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typedef std::map<int, Representation> MapRepresentation;
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class SpecialRepresentations {
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MapRepresentation mapReprs;
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short startByteHasReprs[0x100];
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public:
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SpecialRepresentations();
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void SetRepresentation(const char *charBytes, const char *value);
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void ClearRepresentation(const char *charBytes);
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Representation *RepresentationFromCharacter(const char *charBytes, size_t len);
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bool Contains(const char *charBytes, size_t len) const;
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void Clear();
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};
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struct TextSegment {
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int start;
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int length;
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Representation *representation;
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TextSegment(int start_=0, int length_=0, Representation *representation_=0) :
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start(start_), length(length_), representation(representation_) {
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}
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int end() const {
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return start + length;
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}
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};
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// Class to break a line of text into shorter runs at sensible places.
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class BreakFinder {
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LineLayout *ll;
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int lineStart;
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int lineEnd;
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int posLineStart;
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int nextBreak;
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std::vector<int> selAndEdge;
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unsigned int saeCurrentPos;
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int saeNext;
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int subBreak;
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Document *pdoc;
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EncodingFamily encodingFamily;
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SpecialRepresentations *preprs;
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void Insert(int val);
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// no copy ctr or assignment op
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BreakFinder(const BreakFinder &);
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BreakFinder &operator =(const BreakFinder &);
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public:
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// If a whole run is longer than lengthStartSubdivision then subdivide
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// into smaller runs at spaces or punctuation.
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enum { lengthStartSubdivision = 300 };
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// Try to make each subdivided run lengthEachSubdivision or shorter.
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enum { lengthEachSubdivision = 100 };
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BreakFinder(LineLayout *ll_, int lineStart_, int lineEnd_, int posLineStart_,
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int xStart, bool breakForSelection, Document *pdoc_, SpecialRepresentations *preprs_);
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~BreakFinder();
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TextSegment Next();
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bool More() const;
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};
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class PositionCache {
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std::vector<PositionCacheEntry> pces;
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unsigned int clock;
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bool allClear;
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// no copy ctr or assignment op
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PositionCache(const PositionCache &);
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PositionCache &operator =(const PositionCache &);
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public:
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PositionCache();
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~PositionCache();
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void Clear();
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void SetSize(size_t size_);
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size_t GetSize() const { return pces.size(); }
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void MeasureWidths(Surface *surface, ViewStyle &vstyle, unsigned int styleNumber,
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const char *s, unsigned int len, XYPOSITION *positions, Document *pdoc);
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};
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inline bool IsSpaceOrTab(int ch) {
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return ch == ' ' || ch == '\t';
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}
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#ifdef SCI_NAMESPACE
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}
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#endif
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#endif
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