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