Examples of org.apache.bcel.util.InstructionFinder.search()

Class org.apache.bcel.util.InstructionFinder

Examples of org.apache.bcel.util.InstructionFinder.search()

org.apache.bcel.util.InstructionFinder.search()
Search for the given pattern in the instruction list. You can search for any valid opcode via its symbolic name, e.g. "istore". You can also use a super class or an interface name to match a whole set of instructions, e.g. "BranchInstruction" or "LoadInstruction". "istore" is also an alias for all "istore_x" instructions. Additional aliases are "if" for "ifxx", "if_icmp" for "if_icmpxx", "if_acmp" for "if_acmpxx". Consecutive instruction names must be separated by white space which will be removed during the compilation of the pattern. For the rest the usual pattern matching rules for regular expressions apply.
Example pattern:
```
 search("BranchInstruction NOP ((IfInstruction|GOTO)+ ISTORE Instruction)*"); 
```
If you alter the instruction list upon a match such that other matching areas are affected, you should call reread() to update the finder and call search() again, because the matches are cached. @param pattern the instruction pattern to search for, where case is ignored @param from where to start the search in the instruction list @param constraint optional CodeConstraint to check the found code pattern for user-defined constraints @return iterator of matches where e.nextElement() returns an array ofinstruction handles describing the matched area

                    if (m.isStatic()) {
                        MethodGen gen = new MethodGen(m,c.getClassName(),cpg);
                        InstructionList il = gen.getInstructionList();
                        if (il == null) continue;
                        InstructionFinder f = new InstructionFinder(il);
                        Iterator e = f.search("GETSTATIC LDC FSUB PUTSTATIC");
                        if (e.hasNext()) {
                            InstructionHandle[] handles = (InstructionHandle[]) e.next();
                            data.addField("MapAngle", ((GETSTATIC)handles[0].getInstruction()).getClassName(cpg) + "." + ((GETSTATIC)handles[0].getInstruction()).getFieldName(cpg));
                            return SearchResult.Success;
                        }

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                      InstructionList il = gen.getInstructionList();
                      if (il == null) {
                          continue;
                      }
                      InstructionFinder f = new InstructionFinder(il);
                      Iterator e = f.search("INVOKESTATIC IFEQ GETSTATIC ICONST_2 IF_ICMPLE");
                      if (e.hasNext()) {
                          InstructionHandle[] handles = (InstructionHandle[]) e.next();
                          String opCount = ((GETSTATIC) handles[2].getInstruction()).getClassName(cpg)+'.'+((GETSTATIC) handles[2].getInstruction()).getFieldName(cpg);
                          data.addField("MenuOptionCount", opCount);
                          return SearchResult.Success;

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                                InstructionList il = gen.getInstructionList();
                                if (il == null) {
                                    continue;
                                }
                                InstructionFinder f = new InstructionFinder(il);
                                Iterator e = f.search("ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD");
                                if (e.hasNext()) {
                                    InstructionHandle[] handles = (InstructionHandle[]) e.next();
                                    String getviewport = ((GETFIELD) handles[1].getInstruction()).getFieldName(cpg);
                                    e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmple", handles[handles.length - 1]);
                                    if (e.hasNext()) {

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                                InstructionFinder f = new InstructionFinder(il);
                                Iterator e = f.search("ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD");
                                if (e.hasNext()) {
                                    InstructionHandle[] handles = (InstructionHandle[]) e.next();
                                    String getviewport = ((GETFIELD) handles[1].getInstruction()).getFieldName(cpg);
                                    e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmple", handles[handles.length - 1]);
                                    if (e.hasNext()) {
                                        handles = (InstructionHandle[]) e.next();
                                        String zmin = ((GETFIELD) handles[2].getInstruction()).getFieldName(cpg);
                                        String zmax = ((GETFIELD) handles[6].getInstruction()).getFieldName(cpg);
                                        e = f.search("ALOAD GETFIELD ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD", handles[handles.length - 1]);

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                                    e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmple", handles[handles.length - 1]);
                                    if (e.hasNext()) {
                                        handles = (InstructionHandle[]) e.next();
                                        String zmin = ((GETFIELD) handles[2].getInstruction()).getFieldName(cpg);
                                        String zmax = ((GETFIELD) handles[6].getInstruction()).getFieldName(cpg);
                                        e = f.search("ALOAD GETFIELD ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD", handles[handles.length - 1]);
                                        if (e.hasNext()) {
                                            handles = (InstructionHandle[]) e.next();
                                            String xscale = ((GETFIELD) handles[1].getInstruction()).getFieldName(cpg);
                                            e = f.search("ALOAD GETFIELD ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD", handles[handles.length - 1]);
                                            if (e.hasNext()) {

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                                        String zmax = ((GETFIELD) handles[6].getInstruction()).getFieldName(cpg);
                                        e = f.search("ALOAD GETFIELD ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD", handles[handles.length - 1]);
                                        if (e.hasNext()) {
                                            handles = (InstructionHandle[]) e.next();
                                            String xscale = ((GETFIELD) handles[1].getInstruction()).getFieldName(cpg);
                                            e = f.search("ALOAD GETFIELD ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD", handles[handles.length - 1]);
                                            if (e.hasNext()) {
                                                handles = (InstructionHandle[]) e.next();
                                                String yscale = ((GETFIELD) handles[1].getInstruction()).getFieldName(cpg);
                                                e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmpgt", handles[handles.length - 1]);
                                                if (e.hasNext()) {

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                                            String xscale = ((GETFIELD) handles[1].getInstruction()).getFieldName(cpg);
                                            e = f.search("ALOAD GETFIELD ALOAD GETFIELD GETFIELD ALOAD GETFIELD GETFIELD", handles[handles.length - 1]);
                                            if (e.hasNext()) {
                                                handles = (InstructionHandle[]) e.next();
                                                String yscale = ((GETFIELD) handles[1].getInstruction()).getFieldName(cpg);
                                                e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmpgt", handles[handles.length - 1]);
                                                if (e.hasNext()) {
                                                    handles = (InstructionHandle[]) e.next();
                                                    String xmin = ((GETFIELD) handles[2].getInstruction()).getFieldName(cpg);
                                                    String xmax = ((GETFIELD) handles[6].getInstruction()).getFieldName(cpg);
                                                    e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmpgt", handles[handles.length - 1]);

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                                                e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmpgt", handles[handles.length - 1]);
                                                if (e.hasNext()) {
                                                    handles = (InstructionHandle[]) e.next();
                                                    String xmin = ((GETFIELD) handles[2].getInstruction()).getFieldName(cpg);
                                                    String xmax = ((GETFIELD) handles[6].getInstruction()).getFieldName(cpg);
                                                    e = f.search("ILOAD ALOAD GETFIELD if_icmplt ILOAD ALOAD GETFIELD if_icmpgt", handles[handles.length - 1]);
                                                    if (e.hasNext()) {
                                                        handles = (InstructionHandle[]) e.next();
                                                        String ymin = ((GETFIELD) handles[2].getInstruction()).getFieldName(cpg);
                                                        String ymax = ((GETFIELD) handles[6].getInstruction()).getFieldName(cpg);
                                                        sdtoolkit.addField("xMin", xmin);

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        if(m.getName().equals("<init>")){
          InstructionList il = mg.getInstructionList();
          if(il == null || il.getInstructions().length != 6)
            continue;
          InstructionFinder f = new InstructionFinder(il);
                    Iterator e = f.search("ALOAD INVOKESPECIAL ALOAD ICONST PUTFIELD");
                    if (e.hasNext()) {
                      matches++;
                    }
        }
      }

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                    ConstantPoolGen cpg = c.getValue().getConstantPool();
                    MethodGen gen = new MethodGen(m,c.getValue().getClassName(),cpg);
                    InstructionList il = gen.getInstructionList();
                    if (il == null) continue;
                    InstructionFinder f = new InstructionFinder(il);
                    Iterator e = f.search("(ALOAD ICONST ALOAD GETFIELD ALOAD GETFIELD ILOAD IMUL ALOAD GETFIELD ILOAD IMUL IADD ALOAD GETFIELD ILOAD IMUL IADD BIPUSH ISHR IADD IASTORE)+");
                    if (e.hasNext()) {
                        InstructionHandle[] handles = (InstructionHandle[]) e.next();
                        String sdviewport = ((GETFIELD)handles[3].getInstruction()).getClassName(cpg);
                        if (!sdviewport.equals(c.getKey())) continue;
                        data.addClass("Viewport",classes.get(sdviewport).getSuperclassName());

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