/* * JStackAlloc (c) 2008 Martin Dvorak * * This software is provided 'as-is', without any express or implied warranty. * In no event will the authors be held liable for any damages arising from * the use of this software. * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. If you use this software * in a product, an acknowledgment in the product documentation would be * appreciated but is not required. * 2. Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software. * 3. This notice may not be removed or altered from any source distribution. */ package cz.advel.stack.instrument; import org.objectweb.asm.*; /** * * @author jezek2 */ class CheckMethod implements MethodVisitor { private Instrumenter instr; public CheckMethod(Instrumenter instr) { this.instr = instr; } public AnnotationVisitor visitAnnotationDefault() { return CheckClass.EMPTY_VISITOR; } public AnnotationVisitor visitAnnotation(String desc, boolean visible) { return CheckClass.EMPTY_VISITOR; } public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) { return CheckClass.EMPTY_VISITOR; } public void visitAttribute(Attribute attr) { } public void visitCode() { } public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) { } public void visitInsn(int opcode) { } public void visitIntInsn(int opcode, int operand) { } public void visitVarInsn(int opcode, int var) { } public void visitTypeInsn(int opcode, String desc) { } public void visitFieldInsn(int opcode, String owner, String name, String desc) { } public void visitMethodInsn(int opcode, String owner, String name, String desc) { // check for already instrumented code to obtain list of used stack types: if (opcode == Opcodes.INVOKEVIRTUAL && owner.equals(instr.getStackInternalName())) { if (name.startsWith("get")) { String type = Type.getReturnType(desc).getInternalName(); instr.addStackType(type); } } // check if we need to instrument this method: if (opcode == Opcodes.INVOKESTATIC && owner.equals(Instrumenter.STACK_NAME)) { if (name.equals("alloc") || name.equals("libraryCleanCurrentThread")) { instr.addInstrumentMethod(); } } } public void visitJumpInsn(int opcode, Label label) { } public void visitLabel(Label label) { } public void visitLdcInsn(Object cst) { } public void visitIincInsn(int var, int increment) { } public void visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels) { } public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) { } public void visitMultiANewArrayInsn(String desc, int dims) { } public void visitTryCatchBlock(Label start, Label end, Label handler, String type) { } public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) { } public void visitLineNumber(int line, Label start) { } public void visitMaxs(int maxStack, int maxLocals) { } public void visitEnd() { } }