diff options
Diffstat (limited to 'include/Accessor.h')
-rwxr-xr-x | include/Accessor.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/include/Accessor.h b/include/Accessor.h new file mode 100755 index 0000000..0b2c4ba --- /dev/null +++ b/include/Accessor.h @@ -0,0 +1,78 @@ +// Scintilla source code edit control +/** @file Accessor.h + ** Rapid easy access to contents of a Scintilla. + **/ +// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org> +// The License.txt file describes the conditions under which this software may be distributed. + +enum { wsSpace = 1, wsTab = 2, wsSpaceTab = 4, wsInconsistent=8}; + +class Accessor; + +typedef bool (*PFNIsCommentLeader)(Accessor &styler, int pos, int len); + +/** + * Interface to data in a Scintilla. + */ +class Accessor { +protected: + enum {extremePosition=0x7FFFFFFF}; + /** @a bufferSize is a trade off between time taken to copy the characters + * and retrieval overhead. + * @a slopSize positions the buffer before the desired position + * in case there is some backtracking. */ + enum {bufferSize=4000, slopSize=bufferSize/8}; + char buf[bufferSize+1]; + int startPos; + int endPos; + int codePage; + + virtual bool InternalIsLeadByte(char ch)=0; + virtual void Fill(int position)=0; + +public: + Accessor() : startPos(extremePosition), endPos(0), codePage(0) {} + virtual ~Accessor() {} + char operator[](int position) { + if (position < startPos || position >= endPos) { + Fill(position); + } + return buf[position - startPos]; + } + /** Safe version of operator[], returning a defined value for invalid position. */ + char SafeGetCharAt(int position, char chDefault=' ') { + if (position < startPos || position >= endPos) { + Fill(position); + if (position < startPos || position >= endPos) { + // Position is outside range of document + return chDefault; + } + } + return buf[position - startPos]; + } + bool IsLeadByte(char ch) { + return codePage && InternalIsLeadByte(ch); + } + void SetCodePage(int codePage_) { codePage = codePage_; } + + virtual bool Match(int pos, const char *s)=0; + virtual char StyleAt(int position)=0; + virtual int GetLine(int position)=0; + virtual int LineStart(int line)=0; + virtual int LevelAt(int line)=0; + virtual int Length()=0; + virtual void Flush()=0; + virtual int GetLineState(int line)=0; + virtual int SetLineState(int line, int state)=0; + virtual int GetPropertyInt(const char *key, int defaultValue=0)=0; + virtual char *GetProperties()=0; + + // Style setting + virtual void StartAt(unsigned int start, char chMask=31)=0; + virtual void SetFlags(char chFlags_, char chWhile_)=0; + virtual unsigned int GetStartSegment()=0; + virtual void StartSegment(unsigned int pos)=0; + virtual void ColourTo(unsigned int pos, int chAttr)=0; + virtual void SetLevel(int line, int level)=0; + virtual int IndentAmount(int line, int *flags, PFNIsCommentLeader pfnIsCommentLeader = 0)=0; +}; |