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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /kpdf/xpdf/xpdf/Lexer.h
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+//========================================================================
+//
+// Lexer.h
+//
+// Copyright 1996-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef LEXER_H
+#define LEXER_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "Object.h"
+#include "Stream.h"
+
+class XRef;
+
+#define tokBufSize 128 // size of token buffer
+
+//------------------------------------------------------------------------
+// Lexer
+//------------------------------------------------------------------------
+
+class Lexer {
+public:
+
+ // Construct a lexer for a single stream. Deletes the stream when
+ // lexer is deleted.
+ Lexer(XRef *xrefA, Stream *str);
+
+ // Construct a lexer for a stream or array of streams (assumes obj
+ // is either a stream or array of streams).
+ Lexer(XRef *xrefA, Object *obj);
+
+ // Destructor.
+ ~Lexer();
+
+ // Get the next object from the input stream.
+ Object *getObj(Object *obj, int objNum = -1);
+
+ // Skip to the beginning of the next line in the input stream.
+ void skipToNextLine();
+
+ // Skip over one character.
+ void skipChar() { getChar(); }
+
+ // Get stream.
+ Stream *getStream()
+ { return curStr.isNone() ? (Stream *)NULL : curStr.getStream(); }
+
+ // Get current position in file. This is only used for error
+ // messages, so it returns an int instead of a Guint.
+ int getPos()
+ { return curStr.isNone() ? -1 : (int)curStr.streamGetPos(); }
+
+ // Set position in file.
+ void setPos(Guint pos, int dir = 0)
+ { if (!curStr.isNone()) curStr.streamSetPos(pos, dir); }
+
+ // Returns true if <c> is a whitespace character.
+ static GBool isSpace(int c);
+
+private:
+
+ int getChar();
+ int lookChar();
+
+ Array *streams; // array of input streams
+ int strPtr; // index of current stream
+ Object curStr; // current stream
+ GBool freeArray; // should lexer free the streams array?
+ char tokBuf[tokBufSize]; // temporary token buffer
+
+ XRef *xref;
+};
+
+#endif