00001 /* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 #ifndef __JHL_ITERATOR_H
00003 #define __JHL_ITERATOR_H
00004
00005 /*
00006 * $Id: jhl_iterator.h,v 1.2 2000/07/24 00:33:30 brm Exp $
00007 *
00008 * Iterator classes
00009 *
00010 */
00011
00012 extern SuifEnv* get_suif_env();
00013
00014 /*
00015 * Abstract baseclass for all iterators.
00016 */
00017 class jhl_AbstractIterator
00018 #ifdef BDW_GC
00019 : public gc
00020 #endif
00021 {
00022 public:
00023 jhl_AbstractIterator() { }
00024 virtual ~jhl_AbstractIterator() { }
00025
00026 virtual void iterate() =0;
00027 };
00028
00029
00030 /*
00031 * Iterator that goes throught the bytecode array of a particual
00032 * Java method. For every bytecode the correspondig method in the
00033 * code visitor jhl_CodeVisitor is called.
00034 *
00035 * The field _curr_index can be accesed from the visitor to find out
00036 * the current index of the bytecode the visitor has been invoked for.
00037 * (This value is identical to the first parameter 'ci' for every
00038 * visitor!)
00039 */
00040 class jhl_ByteCodeIterator : public jhl_AbstractIterator {
00041 private:
00042 jhl_Code* _code;
00043 jhl_CodeVisitor* _v;
00044
00045 jhl_u4 _start_index;
00046 jhl_u4 _curr_index;
00047 jhl_u4 _end_index;
00048 public:
00049
00050 // Java bytecode enum
00051 #include "jhl_bytecode_enum"
00052
00053 // iterate through all bytecodes
00054 jhl_ByteCodeIterator(jhl_Code* c, jhl_CodeVisitor* v);
00055
00056 // iterate through interval [start_index..end_index) of the
00057 // bytecode array
00058 jhl_ByteCodeIterator(jhl_Code* c,
00059 jhl_u4 start_index,
00060 jhl_u4 end_index,
00061 jhl_CodeVisitor* v);
00062
00063 // accessors
00064 jhl_Code* code() const { return _code; }
00065 jhl_CodeVisitor* codeVisitor() const { return _v; }
00066 jhl_u4 start_index() const { return _start_index; }
00067 jhl_u4 curr_index() const { return _curr_index; }
00068 jhl_u4 end_index() const { return _end_index; }
00069
00070 void iterate();
00071
00072 };
00073
00074 #endif
