本文整理汇总了Java中sun.jvm.hotspot.oops.LineNumberTableElement类的典型用法代码示例。如果您正苦于以下问题：Java LineNumberTableElement类的具体用法？Java LineNumberTableElement怎么用？Java LineNumberTableElement使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
LineNumberTableElement类属于sun.jvm.hotspot.oops包，在下文中一共展示了LineNumberTableElement类的1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: getBaseLocations
import sun.jvm.hotspot.oops.LineNumberTableElement; //导入依赖的package包/类
private SoftLocationXRefs getBaseLocations() {
SoftLocationXRefs info = (softBaseLocationXRefsRef == null) ? null :
(SoftLocationXRefs)softBaseLocationXRefsRef.get();
if (info != null) {
return info;
}
byte[] codeBuf = bytecodes();
firstIndex = 0;
lastIndex = codeBuf.length - 1;
// This is odd; what is the Location of a Method?
// A StackFrame can have a location, but a Method?
// I guess it must be the Location for bci 0.
location = new LocationImpl(virtualMachine(), this, 0);
boolean hasLineInfo = saMethod.hasLineNumberTable();
LineNumberTableElement[] lntab = null;
int count;
if (hasLineInfo) {
lntab = saMethod.getLineNumberTable();
count = lntab.length;
} else {
count = 0;
}
List lineLocations = new ArrayList(count);
Map lineMapper = new HashMap();
int lowestLine = -1;
int highestLine = -1;
for (int i = 0; i < count; i++) {
long bci = lntab[i].getStartBCI();
int lineNumber = lntab[i].getLineNumber();
/*
* Some compilers will point multiple consecutive
* lines at the same location. We need to choose
* one of them so that we can consistently map back
* and forth between line and location. So we choose
* to record only the last line entry at a particular
* location.
*/
if ((i + 1 == count) || (bci != lntab[i+1].getStartBCI())) {
// Remember the largest/smallest line number
if (lineNumber > highestLine) {
highestLine = lineNumber;
}
if ((lineNumber < lowestLine) || (lowestLine == -1)) {
lowestLine = lineNumber;
}
LocationImpl loc =
new LocationImpl(virtualMachine(), this, bci);
loc.addBaseLineInfo(
new BaseLineInfo(lineNumber, declaringType));
// Add to the location list
lineLocations.add(loc);
// Add to the line -> locations map
Integer key = new Integer(lineNumber);
List mappedLocs = (List)lineMapper.get(key);
if (mappedLocs == null) {
mappedLocs = new ArrayList(1);
lineMapper.put(key, mappedLocs);
}
mappedLocs.add(loc);
}
}
info = new SoftLocationXRefs(SDE.BASE_STRATUM_NAME,
lineMapper, lineLocations,
lowestLine, highestLine);
softBaseLocationXRefsRef = new SoftReference(info);
return info;
}