protected void recursiveParse(Node node) {
// Ignore null nodes or those we have seen before!
if (node == null || parsedNodes.contains(node)) {
return;
}
// Script level nodes have global list of function definitions.
// Parse inner tokens for function definitions here.
if (node instanceof ScriptOrFnNode) {
ScriptOrFnNode sofn = (ScriptOrFnNode) node;
int count = sofn.getFunctionCount() - 1;
while (count > -1) {
FunctionNode fn = sofn.getFunctionNode(count);
recursiveParse(fn);
count--;
}
}
// Parse children from left to right.
recursiveParse(node.getFirstChild());
recursiveParse(node.getLastChild());
// Parse this node and then move along to next
parseNode(node);
parsedNodes.add(node);
recursiveParse(node.getNext());
}
protected Map<String, String> findLiteralStringValues(Node objLiteral) {
Map<String, String> literalValues = new HashMap<String, String>();
// Find object literal keys from property list.
Object[] propertyList = (Object[]) objLiteral.getProp(Token.EQ);
// Iterate through each literal key, extracting associated value. Ignore
// any non-string values, we aren't attempting inner-resolution of references.
if (propertyList != null) {
int numArgs = 0;
// Child nodes are linked list of object values
Node propertyValue = objLiteral.getFirstChild();
while (numArgs < propertyList.length) {
// Convert key/value pairs into a handy format
if (propertyValue.getType() == Token.STRING) {
literalValues.put((String) propertyList[numArgs], propertyValue.getString());
}
propertyValue = propertyValue.getNext();
numArgs++;
}
}
return literalValues;
}
// Given child nodes for a function call, object ref and arguments, return
// the string value for the first argument. Ignore any complicated resolution.
protected String functionCallArgument(Node functionCallNodes, int argIndex) {
String fnCallArg = null;
// Traverse argument nodes until we reach desired one.
Node argument = functionCallNodes.getNext();
while (argument != null && argIndex > 0) {
argument = argument.getNext();
argIndex--;
}
;
// Check we have a simple type value.
if (argument != null && argument.getType() == Token.STRING) {
fnCallArg = argument.getString();
}
return fnCallArg;
}
// Extract property name accessed. Will have two child nodes,
// object reference and property name. Ignore any further
// variable resolution.
protected String functionPropertyName(Node propertyLookup) {
String propertyName = null;
// First argument is an object reference that lookup should be
// performed against.
Node objectReference = propertyLookup.getFirstChild();
if (objectReference != null) {
// Find property identifier we are retrieving...
Node propertyNameNode = objectReference.getNext();
// Only handle explicit string properties, we cannot resolve variables.
if (propertyNameNode != null && propertyNameNode.getType() == Token.STRING) {
propertyName = propertyNameNode.getString();
}
}
return propertyName;
}
// Find an object literal's value for a given key. If not found,
// return null.
protected Node findLiteralValue(Node objLiteral, String key) {
Node literalValueNode = null;
// Get list of all properties
Object[] propertyList = (Object[]) objLiteral.getProp(Token.EQ);
// Iterate through key/values looking for a match
if (propertyList != null) {
Node propertyValue = objLiteral.getFirstChild();
for (int index = 0; index < propertyList.length; index++) {
if (key.equals(propertyList[index])) {
literalValueNode = propertyValue;
break;
}
propertyValue = propertyValue.getNext();
}
}
return literalValueNode;
}
