package org.pdtextensions.core.ast.util;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.eclipse.php.internal.core.ast.nodes.ASTNode;
import org.eclipse.php.internal.core.ast.nodes.Expression;
import org.eclipse.php.internal.core.ast.nodes.FormalParameter;
import org.eclipse.php.internal.core.ast.nodes.IVariableBinding;
import org.eclipse.php.internal.core.ast.nodes.Identifier;
import org.eclipse.php.internal.core.ast.nodes.Variable;
@SuppressWarnings("restriction")
/**
* A ASTNode finder, which finds every local variable in the specified range in a method body.
*
* A variable is considered to be local iff
* 1. variable is dollared
* 2. variable is not a static field (e.g. self::$var)
* 3. variable is not a field (e.g. $this->var)
* 4. the variable is not a global var (e.g. superglobals)
* 5. the variable is not $this.
*
* If no range is specified, then the range is assumed to be the whole php source code.
*
* @author Alex
*
*/
public final class LocalVariableFinder extends AbstractRangeFinder {
private List<Variable> fVariables = new ArrayList<Variable>();
private ArrayList<FormalParameter> fParameters = new ArrayList<FormalParameter>();
public boolean visit(FormalParameter parameter)
{
if(isCovered(parameter)) {
fParameters.add(parameter);
}
return true;
}
public boolean visit(Variable variable) {
Expression name = variable.getName();
if (name.getType() == ASTNode.IDENTIFIER
&& variable.isDollared()
// skip self::$var
&& variable.getParent().getType() != ASTNode.STATIC_FIELD_ACCESS
// skip $this->var
&& variable.getParent().getType() != ASTNode.FIELD_ACCESS
&& isCovered(variable) && !((Identifier) name).getName().equals("this")) {
IVariableBinding binding = variable.resolveVariableBinding();
if(binding == null || binding.isLocal() && !binding.isGlobal()) {
fVariables.add(variable);
}
}
return true;
}
public List<Variable> getFoundVariables() {
return fVariables;
}
public ArrayList<FormalParameter> getParameters() {
return fParameters;
}
}