/**
* @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 instanceof Identifier) {
final Identifier id = (Identifier) node;
if (name.equals(id.getName()) && id.getParent().getType() == type) {
exists = true;
}
}
return true;
}
public boolean apply(ASTNode node) {
// stops when found - that's the reason to use ApplyAll
if (exists) return false;
if (node.getType() == ASTNode.CLASS_DECLARATION) {
// do nothing never catch method names
} else if (node.getType() == ASTNode.FUNCTION_DECLARATION) {
FunctionDeclaration functionDeclaration = (FunctionDeclaration) node;
Identifier identifier = functionDeclaration.getFunctionName();
if (identifier.getName().equalsIgnoreCase(name)) {
exists = true;
}
}
return true;
}
public boolean apply(ASTNode node) {
// stops when found - that's the reason to use ApplyAll
if (exists) return false;
if (node.getType() == ASTNode.VARIABLE) {
Variable variable = (Variable) node;
if (variable.isDollared()) {
assert variable.getName().getType() == ASTNode.IDENTIFIER;
Identifier identifier = (Identifier) variable.getName();
if (identifier.getName().equals(name)) {
exists = true;
}
}
}
return true;
}
/**
* @param targetIdentifier
* @param variable
* @param isGlobal
* @param globalStatement
* @return true is the
*/
private static boolean checkGlobal(
Identifier targetIdentifier, final GlobalStatement globalStatement) {
final List<Variable> variables = globalStatement.variables();
for (final Variable current : variables) {
// if the variable is reflection (eg. global $$var) skip
if (current.getName().getType() == ASTNode.IDENTIFIER) {
Identifier id = (Identifier) current.getName();
// variables are case sensative
if (id.getName().equals(targetIdentifier.getName())) {
return true;
}
}
}
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;
}
/**
* @param locateNode
* @return true if the given path indicates a function
*/
private static boolean isFunction(ASTNode locateNode) {
assert locateNode != null;
ASTNode parent = null;
Identifier targetIdentifier = null;
if (locateNode.getType() == ASTNode.FUNCTION_DECLARATION) {
parent = ((FunctionDeclaration) locateNode);
targetIdentifier = ((FunctionDeclaration) locateNode).getFunctionName();
} else if (locateNode instanceof Identifier
&& !"define".equals(((Identifier) locateNode).getName())) { // $NON-NLS-1$
targetIdentifier = (Identifier) locateNode;
parent = targetIdentifier.getParent();
if (parent != null && parent.getType() == ASTNode.NAMESPACE_NAME) {
parent = targetIdentifier.getParent().getParent();
}
} else {
return false;
}
// check if it is a function
if (parent == null
|| parent.getType() != ASTNode.FUNCTION_DECLARATION
&& parent.getType() != ASTNode.FUNCTION_NAME
|| parent.getParent().getType() == ASTNode.METHOD_DECLARATION
|| parent.getType() == ASTNode.FULLY_QUALIFIED_TRAIT_METHOD_REFERENCE) {
return false;
}
if (parent instanceof TraitAlias) {
return false;
}
// check if it is a method
final int type = parent.getParent().getType();
if (type == ASTNode.FUNCTION_INVOCATION) {
final int parentParentType = parent.getParent().getParent().getType();
if (parentParentType == ASTNode.METHOD_DECLARATION
|| parentParentType == ASTNode.STATIC_METHOD_INVOCATION) {
return false;
}
} else if (type == ASTNode.METHOD_DECLARATION) {
return false;
}
return true;
}
public boolean apply(ASTNode node) {
// stops when found - that's the reason to use ApplyAll
if (exists) return false;
if (node.getType() == ASTNode.CLASS_DECLARATION
|| node.getType() == ASTNode.FUNCTION_DECLARATION) {
isGlobalScope = false;
node.childrenAccept(this);
isGlobalScope = true;
return false;
} else if (node instanceof Identifier) {
Identifier identifier = (Identifier) node;
if (identifier.getParent().getType() == ASTNode.VARIABLE) {
Variable variable = (Variable) identifier.getParent();
if (variable.isDollared() && isGlobalScope && name.equals(identifier.getName())) {
exists = true;
}
}
} else if (node.getType() == ASTNode.GLOBAL_STATEMENT) {
GlobalStatement globalStatement = (GlobalStatement) node;
final List<Variable> variables = globalStatement.variables();
for (final Variable variable : variables) {
final Expression variableName = variable.getName();
if (variable.isDollared() && variableName instanceof Identifier) {
Identifier identifier = (Identifier) variableName;
if (name.equals(identifier.getName())) {
exists = true;
}
}
}
}
return true;
}
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;
}
/**
* 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()); // $NON-NLS-1$ //$NON-NLS-2$
}