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[304588] Pointers could point to a complex structure and therefore we cannot trust they're number children hint.

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This commit is contained in:
Marc Khouzam 2010-03-08 13:52:41 +00:00
parent 98c77050c7
commit f9f808080d
1 changed files with 10 additions and 5 deletions
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15
dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/mi/service/MIVariableManager.java
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@ -282,12 +282,17 @@ public class MIVariableManager implements ICommandControl {
* @since 3.0
*/
public boolean isNumChildrenHintTrustworthy() {
// For complex structures which are not arrays, we cannot trust the hint.
// We cannot trust the hint about the number of children when we are
// dealing with a complex structure that could have the
// 'protected/public/private' children types.
// Note that a pointer could have such children, if it points to
// a complex structure.
//
// This is only valid for C++, so we should even check for it using
// -var-info-expression. Do we have to use -var-info-expression for each
// variable object, or can we do it one time ony for the whole program?
// variable object, or can we do it one time only for the whole program?
// Right now, we always assume we could be using C++
return (!isComplex() || isArray());
return (getNumChildrenHint() == 0 || isArray());
}
public String getValue(String format) { return valueMap.get(format); }
@ -298,8 +303,8 @@ public class MIVariableManager implements ICommandControl {
public boolean isArray() { return (getGDBType() == null) ? false : getGDBType().getType() == GDBType.ARRAY; }
public boolean isPointer() { return (getGDBType() == null) ? false : getGDBType().getType() == GDBType.POINTER; }
public boolean isMethod() { return (getGDBType() == null) ? false : getGDBType().getType() == GDBType.FUNCTION; }
// A complex variable is one with children. However, it must not be a pointer since a pointer has one child
// according to GDB, but is still a 'simple' variable.
// A complex variable is one with children. However, it must not be a pointer since a pointer
// does have children, but is still a 'simple' variable, as it can be modifed.
// Note that the numChildrenHint can be trusted when asking if the number of children is 0 or not
public boolean isComplex() { return (getGDBType() == null) ? false : getGDBType().getType() != GDBType.POINTER && getNumChildrenHint() > 0; }