/**
* @param scalar
* @return true if the scalar is defines as $GLOBALS call
*/
private static boolean checkGLOBALS(Scalar scalar) {
final String stringValue = scalar.getStringValue();
if (scalar.getScalarType() != Scalar.TYPE_STRING || stringValue.length() < 3) {
return false;
}
final char charAtZero = stringValue.charAt(0);
final char charAtEnd = stringValue.charAt(stringValue.length() - 1);
if (!detectString(charAtZero) || !detectString(charAtEnd)) {
return false;
}
if (scalar.getParent().getType() == ASTNode.ARRAY_ACCESS) {
ArrayAccess arrayAccess = (ArrayAccess) scalar.getParent();
final Expression variableName = arrayAccess.getName();
if (variableName.getType() == ASTNode.VARIABLE) {
Variable var = (Variable) variableName;
if (var.isDollared() && var.getName() instanceof Identifier) {
final Identifier id = (Identifier) var.getName();
return id.getName().equals("_GLOBALS") // $NON-NLS-1$
|| id.getName().equals("GLOBALS"); // $NON-NLS-1$
}
}
}
return false;
}
public boolean apply(ASTNode node) {
// stops when found - that's the reason to use ApplyAll
if (exists) return false;
if (node.getType() == ASTNode.SCALAR) {
final Scalar scalar = (Scalar) node;
final String stringValue = scalar.getStringValue();
if (scalar.getScalarType() != Scalar.TYPE_STRING || stringValue == null) {
return false;
}
final int length = stringValue.length() - 1;
if (stringValue.charAt(0) != '"'
&& stringValue.charAt(length) != '"'
&& stringValue.equals(name)) {
exists = true;
}
} else if (node.getType() == ASTNode.FUNCTION_INVOCATION) {
FunctionInvocation functionInvocation = (FunctionInvocation) node;
final Expression functionName = functionInvocation.getFunctionName().getName();
if (!(functionName instanceof Identifier)) {
return false;
}
final Identifier identifier = (Identifier) functionName;
final List<Expression> parameters = functionInvocation.parameters();
if (!"define".equalsIgnoreCase(identifier.getName())
|| parameters == null
|| parameters.size() == 0) { // $NON-NLS-1$
return false;
}
final Expression expression = parameters.get(0);
if (expression.getType() != ASTNode.SCALAR) {
return false;
}
Scalar scalar = (Scalar) expression;
final String stringValue = scalar.getStringValue();
if (stringValue.length() < 2 || stringValue.charAt(0) != '"') {
return false;
}
exists = name.equals(stringValue.substring(1, stringValue.length() - 1));
}
return true;
}
/**
* Identifies a constant use
*
* @param locateNode
* @return
*/
private static boolean isConstant(ASTNode locateNode) {
assert locateNode != null;
Scalar scalar = null;
// check if it is an identifier
if (locateNode.getType() != ASTNode.SCALAR) {
ASTNode parent = locateNode.getParent();
ASTNode node = null;
// php 5.3, the parent is NamespaceName
if (parent instanceof NamespaceName) {
node = parent.getParent().getParent();
} else { // non-php 5.3
node = parent.getParent();
}
// check if the node is 'define'
if ((locateNode instanceof Identifier)
&& "define".equals(((Identifier) locateNode).getName()) // $NON-NLS-1$
&& node instanceof FunctionInvocation) {
FunctionInvocation inv = (FunctionInvocation) node;
List<Expression> parameters = inv.parameters();
if (parameters != null && parameters.size() > 0) {
Expression param = parameters.get(0);
if (param instanceof Scalar) {
scalar = (Scalar) param;
} else {
return false;
}
}
} else {
return false;
}
} else {
scalar = (Scalar) locateNode;
}
// if it is not a dollared variable - it is not a global one
if (scalar == null
|| scalar.getScalarType() != Scalar.TYPE_STRING
|| scalar.getStringValue() == null) {
return false;
}
final int length = scalar.getStringValue().length() - 1;
final char charAtBegining = scalar.getStringValue().charAt(0);
final char charAtEnd = scalar.getStringValue().charAt(length);
if (!detectString(charAtEnd) && !detectString(charAtBegining)) {
return true;
}
// check if it is part of define
ASTNode previous = locateNode.getParent();
if (previous instanceof NamespaceName) {
previous = previous.getParent();
}
if (previous.getType() == ASTNode.FUNCTION_NAME) {
previous = previous.getParent();
}
if (previous.getType() != ASTNode.FUNCTION_INVOCATION) {
return false;
}
final FunctionInvocation functionInvocation = (FunctionInvocation) previous;
if (!(functionInvocation.getFunctionName().getName() instanceof Identifier)) {
return false;
}
final Identifier identifier = (Identifier) functionInvocation.getFunctionName().getName();
return "define".equalsIgnoreCase(identifier.getName())
|| "constant".equalsIgnoreCase(identifier.getName()); // $NON-NLS-1$ //$NON-NLS-2$
}