src/tests/add-ons/print/pcl6/disasm.h

   1 /*
   2
   3 PCL6 Disassembler
   4
   5 Copyright (c) 2003 OpenBeOS.
   6
   7 Author:
   8         Michael Pfeiffer
   9
  10 Permission is hereby granted, free of charge, to any person obtaining a copy of
  11 this software and associated documentation files (the "Software"), to deal in
  12 the Software without restriction, including without limitation the rights to
  13 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  14 of the Software, and to permit persons to whom the Software is furnished to do
  15 so, subject to the following conditions:
  16
  17 The above copyright notice and this permission notice shall be included in all
  18 copies or substantial portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 THE SOFTWARE.
  27
  28 */
  29
  30 #ifndef _DISASM_H
  31 #define _DISASM_H
  32
  33 #include "jetlib.h"
  34 #include <SupportDefs.h>
  35 #include <List.h>
  36
  37 class InputStream {
  38         uint8 fBuffer; // one byte only
  39         int8 fBufferSize;
  40         uint32 fPos;
  41
  42 public:
  43         InputStream() : fBufferSize(0), fPos(0) { }
  44         virtual ~InputStream() {};
  45         virtual int RawRead(void* buffer, int size) = 0;
  46         int Read(void* buffer, int size);
  47         int Pos() const { return fPos; }
  48         bool PutUByte(uint8 v);
  49         bool ReadUByte(uint8& v);
  50         bool ReadUInt16(uint16& v);
  51         bool ReadUInt32(uint32& v);
  52         bool ReadSInt16(int16& v);
  53         bool ReadSInt32(int32& v);
  54         bool ReadReal32(float& v);
  55 };
  56
  57 class File : public InputStream {
  58         FILE* fFile;
  59 public:
  60         File(const char* filename);
  61         ~File();
  62         bool InitCheck() { return fFile != NULL; }
  63         int RawRead(void* buffer, int size);
  64 };
  65
  66 typedef struct {
  67         uint8 value;
  68         const char* name;
  69 } AttrValue;
  70
  71 #define NUM_OF_ELEMS(array, type) (sizeof(array) / sizeof(type))
  72
  73 class Disasm {
  74 public:
  75         Disasm(InputStream* stream) : fStream(stream), fVerbose(false) { };
  76         void SetVerbose(bool v) { fVerbose = v; }
  77         void Print();
  78
  79 private:
  80         InputStream* fStream;
  81         BList fArgs;
  82         bool fVerbose;
  83
  84         void Error(const char* text);
  85         bool Expect(const char* text);
  86         bool SkipTo(const char* text);
  87         bool ReadNumber(int32& n);
  88         bool ParsePJL();
  89
  90         void PushArg(struct ATTRIBUTE* attr) { fArgs.AddItem(attr); }
  91         int  NumOfArgs() { return fArgs.CountItems(); }
  92         struct ATTRIBUTE* ArgAt(int i) { return (struct ATTRIBUTE*)fArgs.ItemAt(i); }
  93         void DeleteAttr(struct ATTRIBUTE* attr);
  94         void PrintAttr(struct ATTRIBUTE* attr);
  95         void ClearAttrs();
  96
  97         bool DecodeOperator(uint8 byte);
  98         struct ATTRIBUTE* ReadData(uint8 byte);
  99         bool PushData(uint8 byte);
 100         bool ReadArrayLength(uint32& length);
 101         bool ReadArray(uint8 type, uint32 length, struct ATTRIBUTE* attr);
 102         const char* AttributeName(uint8 id);
 103         void GenericPrintAttribute(uint8 id);
 104         void PrintAttributeValue(uint8 id, const AttrValue* table, int tableSize);
 105         bool DecodeAttribute(uint8 byte);
 106         bool DecodeEmbedData(uint8 byte);
 107         bool ParsePCL6();
 108
 109         bool IsOperator(uint8 byte) const { return byte >= 0x41 && byte <= 0xb9; }
 110         bool IsDataType(uint8 byte) const { return byte >= 0xc0 && byte <= 0xef; }
 111         bool IsAttribute(uint8 byte) const { return byte >= 0xf8 && byte <= 0xf9; }
 112         bool IsEmbedData(uint8 byte) const { return byte >= 0xfa && byte <= 0xfb; }
 113         bool IsWhiteSpace(uint8 byte) const { return byte == 0 || byte >= 0x09 && byte <= 0x0d || byte == 0x20; }
 114         bool IsEsc(uint8 byte) const { return byte == 0x1b; }
 115 };
 116
 117 #endif