| InstructionList il = new InstructionList(); | |
| ... | |
| CodeConstraint constraint = new CodeConstraint() { | |
| public boolean checkCode(InstructionHandle[] match) { | |
| IfInstruction if1 = (IfInstruction)match[0].getInstruction(); | |
| GOTO g = (GOTO)match[2].getInstruction(); | |
| return (if1.getTarget() == match[3]) && | |
| (g.getTarget() == match[4]); | |
| } | |
| }; | |
| FindPattern f = new FindPattern(il); | |
| String pat = "`IfInstruction'`ICONST_0'`GOTO'`ICONST_1'" + | |
| "`NOP'(`IFEQ'|`IFNE')"; | |
| InstructionHandle[] match; | |
| for(InstructionHandle ih = f.search(pat, constraint); | |
| ih != null; ih = f.search(pat, match[0], constraint)) { | |
| match = f.getMatch(); // Constraint already checked | |
| ... | |
| match[0].setTarget(match[5].getTarget()); // Update target | |
| ... | |
| try { | |
| il.delete(match[1], match[5]); | |
| } catch(TargetLostException e) { ... } | |
| } |