本文整理汇总了Java中org.apache.bcel.classfile.CodeException.getStartPC方法的典型用法代码示例。如果您正苦于以下问题：Java CodeException.getStartPC方法的具体用法？Java CodeException.getStartPC怎么用？Java CodeException.getStartPC使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.bcel.classfile.CodeException的用法示例。
在下文中一共展示了CodeException.getStartPC方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getSurroundingCaughtExceptions
import org.apache.bcel.classfile.CodeException; //导入方法依赖的package包/类
public Set<String> getSurroundingCaughtExceptions(int pc, int maxTryBlockSize) {
HashSet<String> result = new HashSet<String>();
if (code == null)
throw new IllegalStateException("Not visiting Code");
int size = maxTryBlockSize;
if (code.getExceptionTable() == null)
return result;
for (CodeException catchBlock : code.getExceptionTable()) {
int startPC = catchBlock.getStartPC();
int endPC = catchBlock.getEndPC();
if (pc >= startPC && pc <= endPC) {
int thisSize = endPC - startPC;
if (size > thisSize) {
result.clear();
size = thisSize;
Constant kind = constantPool.getConstant(catchBlock.getCatchType());
result.add("C" + catchBlock.getCatchType());
} else if (size == thisSize)
result.add("C" + catchBlock.getCatchType());
}
}
return result;
}
示例2: getSurroundingTryBlock
import org.apache.bcel.classfile.CodeException; //导入方法依赖的package包/类
public static @CheckForNull
CodeException getSurroundingTryBlock(ConstantPool constantPool, Code code, @CheckForNull String vmNameOfExceptionClass, int pc) {
int size = Integer.MAX_VALUE;
if (code.getExceptionTable() == null)
return null;
CodeException result = null;
for (CodeException catchBlock : code.getExceptionTable()) {
if (vmNameOfExceptionClass != null) {
Constant catchType = constantPool.getConstant(catchBlock.getCatchType());
if (catchType == null || catchType instanceof ConstantClass
&& !((ConstantClass) catchType).getBytes(constantPool).equals(vmNameOfExceptionClass))
continue;
}
int startPC = catchBlock.getStartPC();
int endPC = catchBlock.getEndPC();
if (pc >= startPC && pc <= endPC) {
int thisSize = endPC - startPC;
if (size > thisSize) {
size = thisSize;
result = catchBlock;
}
}
}
return result;
}
示例3: getSizeOfSurroundingTryBlock
import org.apache.bcel.classfile.CodeException; //导入方法依赖的package包/类
public static int getSizeOfSurroundingTryBlock(ConstantPool constantPool, Code code,
@CheckForNull String vmNameOfExceptionClass, int pc) {
int size = Integer.MAX_VALUE;
int tightStartPC = 0;
int tightEndPC = Integer.MAX_VALUE;
if (code.getExceptionTable() == null)
return size;
for (CodeException catchBlock : code.getExceptionTable()) {
if (vmNameOfExceptionClass != null) {
Constant catchType = constantPool.getConstant(catchBlock.getCatchType());
if (catchType == null || catchType instanceof ConstantClass
&& !((ConstantClass) catchType).getBytes(constantPool).equals(vmNameOfExceptionClass))
continue;
}
int startPC = catchBlock.getStartPC();
int endPC = catchBlock.getEndPC();
if (pc >= startPC && pc <= endPC) {
int thisSize = endPC - startPC;
if (size > thisSize) {
size = thisSize;
tightStartPC = startPC;
tightEndPC = endPC;
}
}
}
if (size == Integer.MAX_VALUE)
return size;
// try to guestimate number of lines that correspond
size = (size + 7) / 8;
LineNumberTable lineNumberTable = code.getLineNumberTable();
if (lineNumberTable == null)
return size;
int count = 0;
for (LineNumber line : lineNumberTable.getLineNumberTable()) {
if (line.getStartPC() > tightEndPC)
break;
if (line.getStartPC() >= tightStartPC)
count++;
}
return count;
}
示例4: examineRedundantBranches
import org.apache.bcel.classfile.CodeException; //导入方法依赖的package包/类
/**
* Examine redundant branches.
*/
private void examineRedundantBranches() {
for (RedundantBranch redundantBranch : redundantBranchList) {
if (DEBUG)
System.out.println("Redundant branch: " + redundantBranch);
int lineNumber = redundantBranch.lineNumber;
// The source to bytecode compiler may sometimes duplicate blocks of
// code along different control paths. So, to report the bug,
// we check to ensure that the branch is REALLY determined each
// place it is duplicated, and that it is determined in the same
// way.
boolean confused = undeterminedBranchSet.get(lineNumber)
|| (definitelySameBranchSet.get(lineNumber) && definitelyDifferentBranchSet.get(lineNumber));
// confused if there is JSR confusion or multiple null checks with
// different results on the same line
boolean reportIt = true;
if (lineMentionedMultipleTimes.get(lineNumber) && confused)
reportIt = false;
else if (redundantBranch.location.getBasicBlock().isInJSRSubroutine() /*
* occurs
* in
* a
* JSR
*/
&& confused)
reportIt = false;
else {
int pc = redundantBranch.location.getHandle().getPosition();
for (CodeException e : method.getCode().getExceptionTable()) {
if (e.getCatchType() == 0 && e.getStartPC() != e.getHandlerPC() && e.getEndPC() <= pc
&& pc <= e.getEndPC() + 5)
reportIt = false;
}
}
if (reportIt) {
collector.foundRedundantNullCheck(redundantBranch.location, redundantBranch);
}
}
}
示例5: getSizeOfSurroundingTryBlock
import org.apache.bcel.classfile.CodeException; //导入方法依赖的package包/类
public static int getSizeOfSurroundingTryBlock(ConstantPool constantPool, Code code,
@CheckForNull @SlashedClassName String vmNameOfExceptionClass, int pc) {
int size = Integer.MAX_VALUE;
int tightStartPC = 0;
int tightEndPC = Integer.MAX_VALUE;
if (code.getExceptionTable() == null)
return size;
for (CodeException catchBlock : code.getExceptionTable()) {
if (vmNameOfExceptionClass != null) {
Constant catchType = constantPool.getConstant(catchBlock.getCatchType());
if (catchType == null) continue;
if (catchType instanceof ConstantClass) {
String name = ((ConstantClass) catchType).getBytes(constantPool);
if (!name.equals(vmNameOfExceptionClass))
continue;
}
}
int startPC = catchBlock.getStartPC();
int endPC = catchBlock.getEndPC();
if (pc >= startPC && pc <= endPC) {
int thisSize = endPC - startPC;
if (size > thisSize) {
size = thisSize;
tightStartPC = startPC;
tightEndPC = endPC;
}
}
}
if (size == Integer.MAX_VALUE)
return size;
// try to guestimate number of lines that correspond
size = (size + 7) / 8;
LineNumberTable lineNumberTable = code.getLineNumberTable();
if (lineNumberTable == null)
return size;
int count = 0;
for (LineNumber line : lineNumberTable.getLineNumberTable()) {
if (line.getStartPC() > tightEndPC)
break;
if (line.getStartPC() >= tightStartPC)
count++;
}
return count;
}