digitalmars.D

digitalmars.D - AAs

John Demme (33/33) Apr 26 2005 I don't understand how Associative Arrays work. I'm getting a segfault

Ben Hinkle (9/49) Apr 27 2005 Is the key type an interface? I notice the inputs to getLinkedChildrenOf...

John Demme (54/109) Apr 27 2005 Sorry. Forgot the usual stuff. This is DMD .120 on Linux. Both the

Ben Hinkle (5/9) Apr 27 2005 [snip]

Ant (3/5) Apr 27 2005 Is this windows? did you try running it on linux?

John Demme <me teqdruid.com> writes:

I don't understand how Associative Arrays work.  I'm getting a segfault
on a line that puts a new entry in an AA.  Here's the stacktrace:



com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getLinkedChildrenOf(com.neura
nexus.nnnode.INode, com.neuralnexus.nnnode.INode) ()

com.neuralnexus.client.ConnectorNode.getAttribute(com.neuralnexus.nnnode.INode)
()

com.neuralnexus.client.ConnectorNode.getFirstAttribute(com.neura
nexus.nnnode.INode) ()

com.neuralnexus.client.ConnectorNode.getFirstAttributeString(com.neura
nexus.nnnode.INode) ()



com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getNodeStruct(mango.xml.rpc.obj
cts.MethodResponse) ()



com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getNodeStruct(mango.xml.rpc.obj
cts.MethodResponse) ()

com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getRelationships(com.neura
nexus.nnnode.INode) ()

com.neuralnexus.client.ConnectorNode.getRelationships() ()



Obviously, it's my own code that's segfaulting, but I don't understand
why all these functions are being run.  The line that puts the new entry

toHash, opEquals, and opCmp.

Can someone explain this stack trace?

Thanks
John Demme

Apr 26 2005

"Ben Hinkle" <ben.hinkle gmail.com> writes:

"John Demme" <me teqdruid.com> wrote in message 
news:1114572104.9518.9.camel localhost.localdomain...
I don't understand how Associative Arrays work.  I'm getting a segfault
 on a line that puts a new entry in an AA.  Here's the stacktrace:



 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getLinkedChildrenOf(com.neura
nexus.nnnode.INode, 
 com.neuralnexus.nnnode.INode) ()

 com.neuralnexus.client.ConnectorNode.getAttribute(com.neura
nexus.nnnode.INode) 
 ()

 com.neuralnexus.client.ConnectorNode.getFirstAttribute(com.neura
nexus.nnnode.INode) 
 ()

 com.neuralnexus.client.ConnectorNode.getFirstAttributeString(com.neura
nexus.nnnode.INode) 
 ()



 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getNodeStruct(mango.xml.rpc.obj
cts.MethodResponse) 
 ()



 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getNodeStruct(mango.xml.rpc.obj
cts.MethodResponse) 
 ()

 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getRelationships(com.neura
nexus.nnnode.INode) 
 ()

 com.neuralnexus.client.ConnectorNode.getRelationships() ()



 Obviously, it's my own code that's segfaulting, but I don't understand
 why all these functions are being run.  The line that puts the new entry

 toHash, opEquals, and opCmp.

 Can someone explain this stack trace?

 Thanks
 John Demme

Is the key type an interface? I notice the inputs to getLinkedChildrenOf are 
INode which looks like interfaces. The ti_C.TypeInfo_C.compare is the 
comparison function for Object references. So it looks like the interface 
reference is being cast to void* and then to Object* and jumping to a random 
routine where Object.opCmp would be.
That's just a guess. More information like a code example or dmd version 
info would help.

Apr 27 2005

John Demme <me teqdruid.com> writes:

Sorry.  Forgot the usual stuff.  This is DMD .120 on Linux.  Both the
key and the values are, in fact, interfaces.  Below is the code for the
INode interface:
public interface INode
{
	public INode createChild();
	public void makeChild(INode child);
	public UText getFirstAttributeString(INode attributeType);
	public void addAttribute(INode attributeType, UText string);
	public void setAttribute(INode attributeType, UText string);
	public INode getFirstAttribute(INode attributeType);
	public INode[] getAttribute(INode attributeType);
	public NNNodeID getID();
	public INode[] getImmediateChildren();
	public INode[] getImmediateParents();
	public INode[] getRelatedNodes();
	public void setData(NNNodeData data);
	public bool isChildOf(INode searchParent);
	public NNNodeData getData();
	public INode[INode] getRelationships();
	
	public int opEquals(Object o);
	public int opCmp(Object o);
	public uint toHash();
}

I have a Class called ConnectorNode which implements this INode.  Here's
the code that does the AA stuff (my debug version)
	protected INode[INode] getNodeStruct(MethodResponse mr) {
		Value[] params = mr.getParams();
		assert(params.length == 1);
		assert(params[0].getValueType() == ValueType.Struct);
		Struct s = params[0].getStruct();
		INode[INode] table;
		foreach (UText key, Value value; s.getValues()) {
			NNNodeID kid = new nnNodeID(key);
			writefln("a");
			ConnectorNode kn = new ConnectorNode(kid, this);
			writefln("b");
			ConnectorNode vn = new ConnectorNode(new NNNodeID(value.getString()),
this);
			writefln("c");
			INode kin = kn;
			writefln("d");
			INode vin = vn;
			writefln("e");
			table[kin] = vin;
			writefln("f");
		}
		return table;
	}

Any ideas?

Thanks
John Demme

On Wed, 2005-04-27 at 08:50 -0400, Ben Hinkle wrote:
 "John Demme" <me teqdruid.com> wrote in message 
 news:1114572104.9518.9.camel localhost.localdomain...
I don't understand how Associative Arrays work.  I'm getting a segfault
 on a line that puts a new entry in an AA.  Here's the stacktrace:



 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getLinkedChildrenOf(com.neura
nexus.nnnode.INode, 
 com.neuralnexus.nnnode.INode) ()

 com.neuralnexus.client.ConnectorNode.getAttribute(com.neura
nexus.nnnode.INode) 
 ()

 com.neuralnexus.client.ConnectorNode.getFirstAttribute(com.neura
nexus.nnnode.INode) 
 ()

 com.neuralnexus.client.ConnectorNode.getFirstAttributeString(com.neura
nexus.nnnode.INode) 
 ()



 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getNodeStruct(mango.xml.rpc.obj
cts.MethodResponse) 
 ()



 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getNodeStruct(mango.xml.rpc.obj
cts.MethodResponse) 
 ()

 com.neuralnexus.xmlrpc.connector.XmlRpcConnector.getRelationships(com.neura
nexus.nnnode.INode) 
 ()

 com.neuralnexus.client.ConnectorNode.getRelationships() ()



 Obviously, it's my own code that's segfaulting, but I don't understand
 why all these functions are being run.  The line that puts the new entry

 toHash, opEquals, and opCmp.

 Can someone explain this stack trace?

 Thanks
 John Demme

 
 Is the key type an interface? I notice the inputs to getLinkedChildrenOf are 
 INode which looks like interfaces. The ti_C.TypeInfo_C.compare is the 
 comparison function for Object references. So it looks like the interface 
 reference is being cast to void* and then to Object* and jumping to a random 
 routine where Object.opCmp would be.
 That's just a guess. More information like a code example or dmd version 
 info would help.

Apr 27 2005

"Ben Hinkle" <ben.hinkle gmail.com> writes:

"John Demme" <me teqdruid.com> wrote in message 
news:1114624472.31952.3.camel localhost.localdomain...
 Sorry.  Forgot the usual stuff.  This is DMD .120 on Linux.  Both the
 key and the values are, in fact, interfaces.  Below is the code for the
 INode interface:

[snip]
 Any ideas?

nothing jumps out. I tried using an interface key in an AA on Windows dmd121 
and it worked ok.

Apr 27 2005

Ant <Ant_member pathlink.com> writes:

In article <1114572104.9518.9.camel localhost.localdomain>, John Demme says...
I don't understand how Associative Arrays work.  I'm getting a segfault
on a line that puts a new entry in an AA.  Here's the stacktrace:

Is this windows? did you try running it on linux?

Ant

Apr 27 2005

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