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/*
* (c) Copyright QNX Software Systems Ltd. 2002.
* All Rights Reserved.
*/
package org.eclipse.cdt.debug.mi.core.output;
import java.util.ArrayList;
import java.util.List;
/**
* GDB/MI data list regiter names response extraction.
*/
public class MIDataListRegisterNamesInfo extends MIInfo {
String[] names;
protected int realNameCount = 0;
public MIDataListRegisterNamesInfo(MIOutput rr) {
super(rr);
}
/**
* @return the list of register names. This list can include 0 length
* strings in the case where the underlying GDB has a sparse set of
* registers. They are returned as 0 length strings
*/
public String[] getRegisterNames() {
if (names == null) {
parse();
}
return names;
}
void parse() {
List aList = new ArrayList();
if (isDone()) {
MIOutput out = getMIOutput();
MIResultRecord rr = out.getMIResultRecord();
if (rr != null) {
MIResult[] results = rr.getMIResults();
for (int i = 0; i < results.length; i++) {
String var = results[i].getVariable();
if (var.equals("register-names")) { //$NON-NLS-1$
MIValue value = results[i].getMIValue();
if (value instanceof MIList) {
parseRegisters((MIList) value, aList);
}
}
}
}
}
names = (String[]) aList.toArray(new String[aList.size()]);
}
void parseRegisters(MIList list, List aList) {
MIValue[] values = list.getMIValues();
for (int i = 0; i < values.length; i++) {
if (values[i] instanceof MIConst) {
String str = ((MIConst) values[i]).getCString();
/* this cannot filter nulls because index is critical in retreival
* and index is assigned in the layers above. The MI spec allows
* empty returns, for some register names. */
if (str != null && str.length() > 0) {
realNameCount++;
aList.add(str);
} else {
aList.add(""); //$NON-NLS-1$
}
}
}
}
/**
* @return the number of non-null and non-empty names in the
* register list
*/
public int getNumRealNames() {
if (names == null)
parse();
return realNameCount;
}
}
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