зеркало из https://github.com/mozilla/gecko-dev.git
274 строки
7.5 KiB
C++
274 строки
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* Test program for ClassFileSummary */
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#include "prinit.h"
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#include "ClassFileSummary.h"
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#include "ClassCentral.h"
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#include "ErrorHandling.h"
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char *fileName = 0;
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char *className = 0;
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char *classPath = 0;
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void printUsage()
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{
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printf("Usage: classinfo [-f filename] [-cpath classpath] classname\n");
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exit(0);
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}
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void parseOptions(int argc, char **argv)
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{
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int i;
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for (i = 1; i < argc; i++)
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if (!strcmp(argv[i], "-f"))
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fileName = argv[++i];
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else if (!strcmp(argv[i], "-cpath"))
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classPath = argv[++i];
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else if (!strcmp(argv[i], "-help"))
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printUsage();
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else if (className) {/* must be a classname */
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printf("Syntax error or duplicate filename\n");
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printUsage();
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} else
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className = argv[i];
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if (!className) {
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printf("Insufficient arguments\n");
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printUsage();
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}
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}
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Pool dynamicPool;
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ClassWorld world(dynamicPool);
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int main(int argc, char **argv)
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{
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int i;
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#ifndef NO_NSPR
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PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 1);
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#endif
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parseOptions(argc, argv);
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// Pool dynamicPool;
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StringPool sp(dynamicPool);
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// ClassWorld world(dynamicPool);
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ClassCentral central(dynamicPool, world, sp, classPath);
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printf("Initializing distinguished objects....\n");
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try {
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initDistinguishedObjects(central);
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} catch (VerifyError err) {
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printf("Error initializing distinguished objects: %d\n", err.cause);
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exit(1);
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}
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printf("Initialized distinguished objects!\n");
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ClassFileSummary *info;
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const ConstantPool *constantPool;
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int constantPoolCount;
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printf("Initialized class central\n");
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try {
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if (fileName) {
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printf("Loading from file %s\n", fileName);
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info = ¢ral.addClass((const char *) className,
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(const char *) fileName);
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} else
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info = ¢ral.addClass((const char *) className);
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} catch (VerifyError err) {
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printf("Cannot load class %s: error %d\n", className, err.cause);
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exit(1);
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}
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constantPool = info->getConstantPool();
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constantPoolCount = info->getConstantPoolCount();
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printf("Total size of object : %d\n", info->getObjSize());
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/* Resolve fields, methods, constants, interfaceMethods */
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for (i = 0; i < constantPoolCount; i++)
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if (constantPool->get(i)) {
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uint8 type = constantPool->get(i)->getType();
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if (type == CR_CONSTANT_FIELDREF) {
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ConstantFieldRef *ref = (ConstantFieldRef *) constantPool->get(i);
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ConstantNameAndType *nameAndType = (ConstantNameAndType *) ref->getTypeInfo();
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ConstantClass *cclass = ref->getClassInfo();
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printf("--> Resolving field %s::%s...\n",
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cclass->getUtf()->getUtfString(),
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nameAndType->getName()->getUtfString());
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uint32 offset;
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bool isVolatile, isConstant;
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bool isStatic = false;
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TypeKind tk;
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ValueKind vk;
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try {
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tk = info->lookupInstanceField(i, vk,
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offset, isVolatile, isConstant);
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} catch (VerifyError err) {
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printf("\tlookupInstanceField() failed with error %d.\n",
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err.cause);
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printf("\tOk, so it's not an instance field. Trying static.\n");
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addr a;
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try {
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tk = info->lookupStaticField(i, vk, a, isVolatile, isConstant);
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isStatic = true;
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} catch (VerifyError err) {
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printf("Cannot resolve field %s: %d\n",
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nameAndType->getName()->getUtfString(), err.cause);
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}
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}
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if (isStatic)
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printf("Resolved as static field.\n");
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else
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printf("Resolved as instance field with offset %u\n", offset);
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} else if (type == CR_CONSTANT_METHODREF) {
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ConstantMethodRef *ref = (ConstantMethodRef *) constantPool->get(i);
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ConstantNameAndType *nameAndType = (ConstantNameAndType *) ref->getTypeInfo();
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ConstantClass *cclass = ref->getClassInfo();
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const char *methodName = nameAndType->getName()->getUtfString();
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printf("--> Resolving method %s::%s...\n",
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cclass->getUtf()->getUtfString(),
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methodName);
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uint32 vIndex;
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addr a;
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Signature sig;
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bool dynamicallyResolved = false;
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if (!strcmp(methodName, "<init>") || !strcmp(methodName, "<clinit>")) {
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try {
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info->lookupSpecialMethod(i, sig, a);
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printf("\tResolved special method %s.\n", methodName);
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} catch (VerifyError err) {
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printf("Could not resolve special method %s: error %d\n",
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methodName, err.cause);
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exit(1);
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}
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} else {
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try {
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dynamicallyResolved =
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info->lookupVirtualMethod(i, sig, vIndex, a);
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} catch (VerifyError err) {
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printf("\tlookupVirtualMethod() failed with erorr %d\n",
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err.cause);
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printf("\tOk, so method is not virtual. trying static...\n");
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try {
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info->lookupStaticMethod(i, sig, a);
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} catch (VerifyError err) {
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printf("Cannot resolve method %s: %d\n",
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nameAndType->getName()->getUtfString(), err.cause);
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exit(1);
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}
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}
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}
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if (dynamicallyResolved)
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printf("\tResolved method %s as virtual: vindex %u.\n",
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nameAndType->getName()->getUtfString(), vIndex);
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else {
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printf("\tResolved method %s statically\n",
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nameAndType->getName()->getUtfString());
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}
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} else if (type == CR_CONSTANT_INTERFACEMETHODREF) {
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ConstantMethodRef *ref = (ConstantMethodRef *) constantPool->get(i);
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ConstantNameAndType *nameAndType = (ConstantNameAndType *) ref->getTypeInfo();
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ConstantClass *cclass = ref->getClassInfo();
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const char *methodName = nameAndType->getName()->getUtfString();
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printf("--> Resolving interface method %s::%s...\n",
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cclass->getUtf()->getUtfString(),
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methodName);
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Signature sig;
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uint32 interfaceIndex;
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addr a;
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uint32 nArgs;
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if (!strcmp(methodName, "<init>") || !strcmp(methodName, "<clinit>")) {
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try {
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info->lookupSpecialMethod(i, sig, a);
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printf("\tResolved special method %s.\n", methodName);
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} catch (VerifyError err) {
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printf("Could not resolve special method %s: error %d\n",
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methodName, err.cause);
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exit(1);
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}
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} else {
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try {
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bool staticallyResolved = info->lookupInterfaceMethod(i, sig,
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interfaceIndex,
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a,
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nArgs);
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printf("\tResolved interface method %s %s.\n",
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nameAndType->getName()->getUtfString(),
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(staticallyResolved) ? "statically" : "dynamically");
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} catch (VerifyError err) {
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printf("\tCould not resolve interface method %s: error %d\n",
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nameAndType->getName()->getUtfString(), err.cause);
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exit(1);
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}
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}
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}
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}
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printf("Successfully loaded class file. \n");
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printf("Getting class descriptor...\n");
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Class *clazz = static_cast<Class *>(info->getThisClass());
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printf("Obtained class descriptor.\n");
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/* Now look up all the interfaces this class implements */
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printf("Loading interfaces...\n");
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const Interface **interfaces = info->getInterfaces();
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printf("Done!\n");
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return 0;
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}
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#ifdef DEBUG_LAURENT
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#ifdef __GNUC__
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// for gcc with -fhandle-exceptions
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void terminate() {}
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#endif
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#endif
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