/**
* @param locateNode
* @return true if the given path indicates a trait
*/
private static boolean isTraitName(ASTNode locateNode) {
assert locateNode != null;
ASTNode parent = null;
if (locateNode.getType() == ASTNode.CLASS_DECLARATION) {
parent = locateNode;
} else if (locateNode.getType() == ASTNode.IDENTIFIER) {
parent = locateNode.getParent();
} else {
return false;
}
if (parent.getType() == ASTNode.NAMESPACE_NAME) {
locateNode = parent;
parent = parent.getParent();
}
final int parentType = parent.getType();
if (parentType == ASTNode.CLASS_DECLARATION
|| parentType == ASTNode.TRAIT_USE_STATEMENT
|| parentType == ASTNode.FULLY_QUALIFIED_TRAIT_METHOD_REFERENCE) {
if (parentType == ASTNode.FULLY_QUALIFIED_TRAIT_METHOD_REFERENCE) {
FullyQualifiedTraitMethodReference reference = (FullyQualifiedTraitMethodReference) parent;
if (reference.getFunctionName() == locateNode) {
return false;
}
}
return true;
}
return false;
}
/**
* Identifies a dispatch usage
*
* @param locateNode
*/
private static boolean isDispatch(ASTNode locateNode) {
assert locateNode != null;
ASTNode parent = null;
// check if it is an identifier
final int type = locateNode.getType();
if (locateNode instanceof Identifier
&& ((Identifier) locateNode).getParent() instanceof Variable) {
parent = (Variable) ((Identifier) locateNode).getParent();
parent = parent.getParent();
} else if (type == ASTNode.SINGLE_FIELD_DECLARATION
|| type == ASTNode.FIELD_DECLARATION
|| type == ASTNode.METHOD_DECLARATION) {
parent = locateNode;
} else {
parent = locateNode.getParent();
}
if (parent instanceof TraitAlias) {
// TraitAlias ta = (TraitAlias) parent;
// return locateNode == ta.getTraitMethod();
return true;
}
// check if it is a method declaration
if (parent.getType() == ASTNode.FUNCTION_DECLARATION) {
// check if it is a method declaration
if (parent.getParent() != null) {
parent = parent.getParent();
if (parent.getType() == ASTNode.METHOD_DECLARATION) {
return true;
}
}
return false;
}
if (parent.getType() == ASTNode.FULLY_QUALIFIED_TRAIT_METHOD_REFERENCE) {
FullyQualifiedTraitMethodReference reference = (FullyQualifiedTraitMethodReference) parent;
if (reference.getFunctionName() == locateNode) {
return true;
}
return false;
}
if (parent.getType() == ASTNode.SINGLE_FIELD_DECLARATION) {
// check for $this variable
if (parent.getParent().getType() == ASTNode.FIELD_DECLARATION
|| parent.getParent().getType() == ASTNode.SINGLE_FIELD_DECLARATION) {
return true;
}
}
if (parent.getType() == ASTNode.FIELD_DECLARATION
|| parent.getType() == ASTNode.METHOD_DECLARATION) {
return true;
}
if (parent.getType() == ASTNode.VARIABLE) {
if (parent.getParent().getType() == ASTNode.FIELD_DECLARATION
|| parent.getParent().getType() == ASTNode.SINGLE_FIELD_DECLARATION) {
return true;
}
}
if (parent.getType() == ASTNode.CONSTANT_DECLARATION) return true;
// check if it is a dispatch
while (parent != null) {
if (parent instanceof Dispatch || parent instanceof StaticDispatch) {
return true;
}
parent = parent.getParent();
}
return false;
}