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(0001124)
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koreth
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05-12-06 15:25
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I decided to have a whack at implementing this; here's what I added to ErrorModule.java. This is functional enough for our code but isn't really a complete implementation.
/**
* Returns the active stack of function calls.
*/
public static Value debug_backtrace(Env env)
throws Exception
{
Value array = new ArrayValueImpl();
Expr frame;
int depth = 0;
while ((frame = env.peekCall(depth++)) != null)
{
ArrayValue thisFunction = new ArrayValueImpl();
Location location = frame.getLocation();
String temp;
if (location != null)
{
temp = location.getFunctionName();
if (temp != null)
thisFunction.put("function", temp);
thisFunction.put("line", location.getLineNumber());
temp = location.getFileName();
if (temp != null)
thisFunction.put("file", temp);
temp = location.getClassName();
if (temp != null)
thisFunction.put("class", temp);
// XXX - no way to populate "type" or "args"
}
else
{
thisFunction.put("function", "?");
thisFunction.put("file", frame.getFunctionLocation());
thisFunction.put("line", "");
}
array.put(thisFunction);
}
return array;
} |
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