public boolean visit(Expression e) throws Exception {
if (typeDeclaration.sourceStart() < e.sourceStart()
&& typeDeclaration.sourceEnd() > e.sourceEnd()) {
if (e instanceof Assignment) {
if (e.sourceStart() == offset && e.sourceEnd() - e.sourceStart() == length) {
result = ((Assignment) e).getValue();
context = contextStack.peek();
} else if (variableName != null) {
Assignment assignment = (Assignment) e;
Expression left = assignment.getVariable();
Expression right = assignment.getValue();
if (left instanceof StaticFieldAccess) {
StaticFieldAccess fieldAccess = (StaticFieldAccess) left;
Expression dispatcher = fieldAccess.getDispatcher();
if (dispatcher instanceof TypeReference
&& "self".equals(((TypeReference) dispatcher).getName())) { // $NON-NLS-1$
Expression field = fieldAccess.getField();
if (field instanceof VariableReference
&& variableName.equals(((VariableReference) field).getName())) {
staticDeclarations.put(right, contextStack.peek());
}
}
} else if (left instanceof FieldAccess) {
FieldAccess fieldAccess = (FieldAccess) left;
Expression dispatcher = fieldAccess.getDispatcher();
if (dispatcher instanceof VariableReference
&& "$this".equals(((VariableReference) dispatcher).getName())) { // $NON-NLS-1$
Expression field = fieldAccess.getField();
if (field instanceof SimpleReference
&& variableName.equals('$' + ((SimpleReference) field).getName())) {
staticDeclarations.put(right, contextStack.peek());
}
}
}
}
}
}
return visitGeneral(e);
}
private static boolean checkGlobalIdentifier(ASTNode locateNode) {
// check if it is a GLOBALS['a'] direction
if (locateNode.getType() == ASTNode.SCALAR) {
Scalar scalar = (Scalar) locateNode;
return checkGLOBALS(scalar);
}
// check if it is an identifier
if (locateNode.getType() != ASTNode.IDENTIFIER) {
return false;
}
final Identifier targetIdentifier = ((Identifier) locateNode);
ASTNode parent = locateNode.getParent();
if (parent == null || parent.getType() != ASTNode.VARIABLE) {
return false;
}
final Variable variable = (Variable) parent;
// if it is not a dollared variable - it is not a global one
if (!variable.isDollared() || variable.getParent().getType() == ASTNode.FIELD_DECLARATION) {
return false;
}
// ignore static memeber call
if (parent.getParent().getType() == ASTNode.STATIC_FIELD_ACCESS) {
final StaticFieldAccess staticFieldAccess = (StaticFieldAccess) parent.getParent();
if (staticFieldAccess.getMember() == variable) {
return false;
}
}
if (parent.getParent().getLocationInParent() == FieldsDeclaration.FIELDS_PROPERTY) {
return false;
}
// check if declared global in function
while (parent != null) {
// if the variable was used inside a function
if (parent.getType() == ASTNode.FUNCTION_DECLARATION) {
// global declaration detection
final int end = parent.getEnd();
class GlobalSeacher extends ApplyAll {
public int offset = end;
public boolean apply(ASTNode node) {
if (offset != end) {
return false;
}
if (node.getType() == ASTNode.GLOBAL_STATEMENT) {
GlobalStatement globalStatement = (GlobalStatement) node;
if (checkGlobal(targetIdentifier, globalStatement)) {
offset = globalStatement.getStart();
}
}
return true;
}
}
GlobalSeacher searchGlobal = new GlobalSeacher();
parent.accept(searchGlobal);
return searchGlobal.offset <= targetIdentifier.getStart();
}
parent = parent.getParent();
}
return true;
}
